Water bottom self-entering type sampling equipment for water conservancy

Abstract

The invention discloses water bottom self-entering type sampling equipment for water conservancy, and relates to the field of water bottom sampling, the water bottom self-entering type sampling equipment comprises a sampling barrel, the lower end of the sampling barrel is fixedly connected with a counterweight head, the lower end of the counterweight head is provided with a sampling port communicated with the interior of the sampling barrel, and the interior of an upper end opening of the sampling barrel is fixedly connected with a guide sleeve; a guide sleeve is vertically arranged on the base, a guide column is movably inserted in the guide sleeve, the lower end of the guide column is fixedly connected with a rubber piston head, the upper end of the guide column is fixedly connected with a connecting end block, a trigger spring is vertically arranged between the connecting end block and the guide sleeve, and the trigger spring is movably arranged on the guide column in a sleeving mode. The device sinks to the bottom due to the dead weight, and the two functions of sampling and inflating are triggered through the impact between the triggering end sleeve and the water bottom during sinking, so that the device not only can collect samples such as water and silt at the water bottom, but also can automatically float to the water surface through water buoyancy generated after inflating; therefore, under the condition of a pure mechanical structure, automatic sampling at the water bottom can be completed by matching with chemical reaction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water bottom sampling, in particular to a water bottom self-entering sampling device. BACKGROUND

[0002] Water sampling is mainly for monitoring water quality, evaluating project quality and ensuring water resource safety. The existing sampling mostly uses stratified samplers to take water samples of different depths, thereby improving the originality of samples. However, if the silt-containing samples at the water bottom are to be taken, a long sampler support rod is needed to bring the sampler to the water bottom, or an electrically controlled driveable sampler is used for sampling. However, the sampler with the support rod extending into the water bottom has obvious shortcomings due to the length limitation of the support rod. Although the electrically controlled driveable sampler does not have the shortcomings of the sampler with the support rod extending into the water bottom, its internal structure is not simple, and therefore the price is high, and the subsequent maintenance and repair need certain cost, and the sampling personnel also need to have corresponding knowledge and operation proficiency to normally use it. SUMMARY

[0003] (I) Technical problems solved

[0004] In view of the above-mentioned shortcomings of the prior art, the present application provides a water bottom self-entering sampling device for water, which can effectively solve the problems of the prior art.

[0005] (II) Technical solutions

[0006] To achieve the above object, the present application is implemented by the following technical solutions,

[0007] The application discloses a water bottom self-entering sampling device, which comprises a sampling cylinder, a counterweight head fixedly connected to the lower end of the sampling cylinder, a sampling port communicated with the inside of the sampling cylinder and formed in the lower end of the counterweight head, a guide sleeve fixedly connected to the upper end opening of the sampling cylinder, a guide column movably inserted into the guide sleeve, a rubber piston head fixedly connected to the lower end of the guide column, a connecting end block fixedly connected to the upper end of the guide column, a trigger spring vertically arranged between the connecting end block and the guide sleeve, the trigger spring movably sleeving on the guide column, a trigger end sleeve arranged on the lower side of the counterweight head, two vertical columns fixedly connected to the upper end of the counterweight head, a limiting plate arranged on the inner side of each of the two vertical columns through a gear transmission assembly, a limiting groove symmetrically formed in the two ends of the connecting end block and matched with the inner end of the limiting plate, a limiting assembly arranged on the inner side of one of the vertical columns, a positioning ring seat fixedly connected to the upper end of the other vertical column, a connecting seat block rotatably installed in the positioning ring seat, guide vanes annularly arranged on the outer wall of the positioning ring seat, a first screw transmission assembly arranged on the lower side of the connecting seat block, a fixed bin and a movable bin arranged on the upper side of the connecting seat block through a detachable connecting assembly, the fixed bin being located on the upper side of the movable bin, screw feed openings arranged on the side walls of the fixed bin and the movable bin, and a screw plug threadedly connected to the outer end opening of the screw feed opening, a positioning connecting pipe fixedly arranged on the lower end of the fixed bin and rotatably installed in the upper end opening of the movable bin, stirring blades annularly arranged on the outer wall of the positioning connecting pipe, a sealing block arranged on the upper side opening of the positioning connecting pipe through a second screw transmission assembly, an external screw joint arranged on the upper end of the fixed bin and provided with a one-way valve assembly, and an air bag arranged on the external screw joint through a screw connecting assembly.

[0008] Further, a sampling head is threadedly connected to the lower end opening of the sampling port, and the sampling head is semispherical.

[0009] Further, a guide groove is formed in the counterweight head, the trigger end sleeve is movably inserted into the lower end opening of the guide groove, and waist-shaped water holes are annularly arranged on the surface of the trigger end sleeve.

[0010] Further, the gear transmission assembly comprises a transmission shell, the inner ends of the two vertical columns are fixedly connected with the transmission shell, the limiting plate is slidingly arranged in the transmission shell, a rotating shaft is rotatably installed on the upper side of the transmission shell, transmission gears are fixedly connected to the two ends of the rotating shaft, a connecting tooth rod is movably inserted into the transmission shell in a vertical mode, the lower end of the connecting tooth rod is movably inserted into the counterweight head and fixedly connected to the upper end of the trigger end sleeve, the upper side teeth of the connecting tooth rod are engaged with one of the transmission gears, and transmission teeth are arranged on the surface of the limiting plate and engaged with the other transmission gear.

[0011] Further, the first screw transmission assembly comprises a first screw rod fixedly arranged at the center of the lower end of the connecting block, a threaded connecting port adapted to the first screw rod is arranged at the center of the connecting block, the first screw rod is inserted into the threaded connecting port, the lower end of the first screw rod is movable in the guide column, the cross section of the guide column is hexagonal, and the inner diameter of the guide sleeve is adapted to the outer diameter of the guide column.

[0012] Further, the limiting assembly comprises a fixed sleeve block fixedly arranged at the inner wall of the group of columns, a limiting block with a longitudinal cross section of a triangle is movably arranged at the opening of the inner end of the fixed sleeve block, a return spring is transversely arranged in the fixed sleeve block, and the two ends of the return spring are respectively abutted against one end of the limiting block arranged in the fixed sleeve block and the inner wall of the fixed sleeve block.

[0013] Further, the detachable connecting assembly comprises a connecting rod, the outer wall of the fixed bin is annularly arranged with the connecting rod, the lower end of the connecting rod is arranged with a clamping block with a cross section of a triangle, the upper end of the positioning ring seat is annularly arranged with a clamping groove adapted to the clamping block, the lower end of the movable bin is fixedly arranged with a plug with a cross section of a hexagon at the center, and the upper end of the connecting block is arranged with a plug groove adapted to the plug at the center.

[0014] Further, the second screw transmission assembly comprises a movable connecting pipe fixedly arranged at the lower end of the sealing block, the movable connecting pipe is movably inserted into the opening of the upper end of the positioning connecting pipe, the inner wall of the upper end of the fixed bin is annularly arranged with vertical guide rods, the outer wall of the sealing block is annularly arranged with guide grooves adapted to the guide rods, the sealing block is longitudinally slid in the annularly arranged guide rods through the guide grooves, the movable connecting pipe is annularly arranged with connecting holes, the lower end of the movable connecting pipe is fixedly arranged with a threaded sleeve block at the inner wall of the opening, a second screw rod adapted to the threaded sleeve block is threadedly inserted into the threaded sleeve block, and the lower end of the second screw rod is fixedly connected with the inner wall of the lower end of the movable bin.

[0015] Further, the one-way valve assembly comprises an air hole arranged in the fixed bin and connected with the outer threaded connector, a fixed seat is fixedly connected to the inner upper side of the outer threaded connector, a movable seat is movably arranged at the inner lower side of the outer threaded connector, the movable seat is below the fixed seat, a connecting spring is longitudinally arranged between the fixed seat and the transmission teeth, the upper and lower ends of the connecting spring are respectively fixedly connected with the fixed seat and the opposite end of the movable seat, and the lower end of the movable seat is fixedly arranged with a valve block adapted to the air hole.

[0016] Further, the threaded connection assembly comprises an inner threaded connector sleeved on the outer threaded connector, the inner threaded connector is fixedly arranged at the opening of the air bag, an outer wall of the inner threaded connector is provided with a sliding groove, a sliding block is slidably arranged in the sliding groove, and an outer side of the outer threaded connector is provided with an axial limiting groove matched with the sliding block.

[0017] (III) Beneficial Effects

[0018] Compared with the known prior art, the technical scheme provided by the present application has the following beneficial effects:

[0019] The device sinks to the bottom by its own weight, and the impact of the trigger end sleeve on the water bottom triggers the sampling and inflation functions, so that the device not only can take samples such as water and silt on the water bottom, but also can automatically float to the water surface by the water buoyancy generated after inflation. Thus, in the case of pure mechanical structure, the automatic sampling of the water bottom can be completed by cooperating with a chemical reaction. Compared with the support rod type sampler, the limitation of sampling depth is solved. Compared with the electrically controllable drive sampler, the manufacturing cost is low, and the subsequent maintenance cost is low. At the same time, the pure mechanical structure is simple to understand and has low operation threshold. During the sampling process, one person can sequentially release multiple points, and then the samplers floating to the water surface can be uniformly picked up for sampling. Compared with the support rod type sampler or the electrically controllable drive sampler, the sampling work of samples in wide water areas such as lakes is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0021] Figure 1 It is a front view schematic diagram of the structure of the present application;

[0022] Figure 2 It is a rear view schematic diagram of the structure of the present application;

[0023] Figure 3 It is a front view schematic diagram of the structure of the present application;

[0024] Figure 4 It is a schematic diagram of the structure section of the gear transmission assembly and the first threaded transmission assembly in the present application;

[0025] Figure 5 It is a schematic diagram of the structure section of the limiting assembly and the detachable connecting assembly in the present application;

[0026] Figure 6The structure schematic diagram of the top view of the connecting seat block in the application;

[0027] Figure 7 The structure schematic diagram of the bottom view of the movable bin in the application;

[0028] Figure 8 The structure sectional schematic diagram of the second threaded transmission assembly in the application;

[0029] Figure 9 The structure sectional schematic diagram of the fixed bin in the application;

[0030] Figure 10 The structure sectional schematic diagram of the movable bin in the application;

[0031] Figure 11 The structure sectional schematic diagram of the one-way valve assembly in the application;

[0032] Figure 12 The structure split schematic diagram of the threaded connection assembly in the application.

[0033] The numbers in the figure respectively represent: 1, sampling cylinder; 2, counterweight head; 3, sampling port; 4, sampling head; 5, guide sleeve; 6, guide column; 7, rubber piston head; 8, connecting end block; 9, trigger spring; 10, guide groove; 11, trigger end sleeve; 12, waist-shaped water hole; 13, connecting tooth rod; 14, stand column; 15, transmission shell; 16, limiting plate; 17, rotating shaft; 18, transmission gear; 19, transmission gear tooth; 20, limiting groove; 21, threaded connection port; 22, first threaded rod; 23, positioning ring seat; 24, connecting seat block; 25, guide vane; 26, fixed sleeve block; 27, limiting block; 28, reset spring; 29, fixed bin; 30, movable bin; 31, connecting rod; 32, clamping block; 33, clamping groove; 34, plug; 35, insertion groove; 36, threaded feeding port; 37, threaded plug; 38, positioning connecting pipe; 39, stirring blade; 40, movable connecting pipe; 41, sealing block; 42, guide rod; 43, connecting hole; 44, threaded sleeve block; 45, second threaded rod; 46, external threaded connector; 47, air hole; 48, fixed seat; 49, movable seat; 50, connecting spring; 51, valve block; 52, internal threaded connector; 53, air bag; 54, sliding groove; 55, sliding block; 56, axial limiting groove. DETAILED DESCRIPTION

[0034] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0035] Please refer to Figures 1-12 An embodiment provided by the present application: a water bottom self-entry sampling device for water, comprising a sampling cylinder 1, a counterweight head 2 fixedly connected to the lower end of the sampling cylinder 1, a sampling port 3 communicated with the inside of the sampling cylinder 1 being formed in the lower end of the counterweight head 2, a guide sleeve 5 fixedly connected in the opening of the upper end of the sampling cylinder 1, a guide column 6 movably inserted in the guide sleeve 5, a rubber piston head 7 fixedly connected to the lower end of the guide column 6, a connecting end block 8 fixedly connected to the upper end of the guide column 6, a trigger spring 9 vertically arranged between the connecting end block 8 and the guide sleeve 5, the trigger spring 9 movably sleeved on the guide column 6, a trigger end sleeve 11 arranged on the lower side of the counterweight head 2, two vertical columns 14 fixedly connected to the upper end of the counterweight head 2 in a symmetrical manner, a limiting plate 16 arranged on the inner side of each of the two vertical columns 14 through a gear transmission assembly, a limiting groove 20 symmetrically formed in the two ends of the connecting end block 8 and matched with the inner end of the limiting plate 16, a limiting assembly arranged on the inner side of one of the vertical columns 14, a positioning ring seat 23 fixedly connected to the upper end of the two vertical columns 14, a connecting seat block 24 rotatably installed in the positioning ring seat 23, a plurality of guide vanes 25 annularly arranged on the outer wall of the positioning ring seat 23, a first screw transmission assembly arranged on the lower side of the connecting seat block 24, a fixed bin 29 and a movable bin 30 arranged on the upper side of the connecting seat block 24 through a detachable connecting assembly, the fixed bin 29 being located on the upper side of the movable bin 30, a threaded feeding port 36 arranged on the side wall of each of the fixed bin 29 and the movable bin 30, a threaded plug 37 threadedly connected to the outer end opening of the threaded feeding port 36, a positioning connecting pipe 38 fixedly arranged on the lower end of the fixed bin 29 and rotatably installed in the upper end opening of the movable bin 30, a plurality of stirring blades 39 annularly arranged on the outer wall of the positioning connecting pipe 38, a sealing block 41 arranged on the upper side opening of the positioning connecting pipe 38 through a second screw transmission assembly, an external screw joint 46 arranged on the upper end of the fixed bin 29, a one-way valve assembly arranged in the external screw joint 46, and an air bag 53 arranged on the external screw joint 46 through a threaded connecting assembly.

[0036] The fixed bin 29 is filled with an appropriate amount of aluminum sulfate solution, and the movable bin 30 is filled with an appropriate amount of ammonium bicarbonate powder. The mixing ratio of aluminum sulfate solution to ammonium bicarbonate powder is 1:6, and a large amount of carbon dioxide gas can be generated. The carbon dioxide gas is used to fill the air bag 53 to make it expand and generate sufficient buoyancy to bring the device to the water surface in the water.

[0037] As shown in Figure 2 and Figure 4 , the outer end of the limiting plate 16 is L-shaped, the outer surface of the stand 14 is provided with a groove matched with the outer end of the limiting plate 16, and the inner end of the limiting plate 16 is rounded. In this way, the outer end of the limiting plate 16 will not protrude from the surface of the stand 14 after being pressed to the designated position, so that the misoperation will not occur, and the outer side of the stand 14 can remain smooth to reduce the water resistance when moving in water. The conical structure of the counterweight head 2 can facilitate its entry into water, and the device can be in a posture with the counterweight head 2 downwardly moving in water by using the weight, so that when touching the bottom, the trigger end sleeve 11 can be ensured to touch the bottom first, thereby ensuring the normal triggering of other components.

[0038] As shown in Figure 7 , Figure 8 and Figure 9 , the cross sections of the fixed bin 29 and the movable bin 30 are both circular ring-shaped, the connection between the positioning connecting pipe 38 and the upper opening of the movable bin 30 is rotatably connected and sealed by a sealing bearing and a sealing rubber ring, and the lower side of the sealing block 41 is glued with a sealing rubber ring with an inner diameter larger than the outer diameter of the upper opening of the positioning connecting pipe 38, so that when the sealing block 41 is attached to the lower inner wall of the fixed bin 29, the sealing rubber ring can seal the attachment.

[0039] As a preferred embodiment in this embodiment, as shown in Figure 3 , the lower opening of the sampling port 3 is connected with a sampling head 4 through a threaded connection, and the sampling head 4 is hemispherical, and a circular hole is equidistantly formed on the surface of the sampling head 4. In this structure, the threaded connection of the sampling head 4 can be disassembled, so that the sampling cylinder 1 can be cleaned or replaced with a sampling head 4 of different style or aperture according to actual use, and the hemispherical structure of the sampling head 4 can avoid the situation that the sampling port 3 is blocked because the sampling head 4 completely adheres to the bottom of water or is completely covered by other objects on the bottom, and the circular hole on the surface of the sampling head 4 can facilitate the entry of water samples and small-particle sediment samples into the sampling cylinder 1, while blocking the entry of large-particle sand into the sampling port 3, so as to ensure the smoothness of the sampling port 3.

[0040] As a preferred embodiment in this embodiment, as shown in Figure 2 and Figure 3As shown, the counterweight head 2 is provided with a guide groove 10, the trigger end sleeve 11 is movably inserted into the lower end opening of the guide groove 10, and the surface of the trigger end sleeve 11 is provided with a plurality of waist-shaped water holes 12. In this structure, the trigger end sleeve 11 can protect the sampling head 4 from being impacted or covered by other objects when it is sinking and not touching the bottom, so as to avoid the sampling head 4 being blocked. At the same time, the waist-shaped water holes 12 can facilitate water flow and reduce the water resistance when the trigger end sleeve 11 is sinking.

[0041] As a preferred embodiment in the present embodiment, as shown in Figure 3 and Figure 4 As shown, the gear transmission assembly includes a transmission shell 15, the inner ends of the two groups of stand columns 14 are fixedly connected with the transmission shell 15, a limiting plate 16 is slidably arranged in the transmission shell 15, a rotating shaft 17 is rotatably arranged on the upper side of the transmission shell 15, and the two ends of the rotating shaft 17 are fixedly connected with transmission gears 18, a connecting tooth rod 13 is movably inserted into the transmission shell 15, and the lower end of the connecting tooth rod 13 is movably inserted into the counterweight head 2 and fixedly connected with the upper end of the trigger end sleeve 11, the upper side teeth of the connecting tooth rod 13 are engaged with one group of transmission gears 18, and the surface of the limiting plate 16 is provided with transmission teeth 19, and the transmission teeth 19 are engaged with the other group of transmission gears 18. This structure is used to make the trigger end sleeve 11 receive enough upward force, so as to transmit the force to the limiting plate 16 to achieve the purpose of opening, so that the trigger spring 9 in the compressed state can be triggered to perform sampling work, and the positioning connecting pipe 38 is opened to mix the aluminum sulfate solution and the ammonium bicarbonate powder in the fixed bin 29 and the movable bin 30 to generate carbon dioxide to inflate the air bag 53.

[0042] As a preferred embodiment in the present embodiment, as shown in Figure 3 and Figure 4As shown, the first threaded transmission assembly includes a first threaded rod 22 fixedly arranged at the center of the lower end of the connecting seat block 24, and the center of the connecting end block 8 is provided with a threaded connecting port 21 matched with the first threaded rod 22, the first threaded rod 22 is inserted into the threaded connecting port 21 through the thread, and the lower end of the first threaded rod 22 is movable in the guide column 6. The cross section of the guide column 6 is hexagonal, and the inner diameter of the guide sleeve 5 is matched with the outer diameter of the guide column 6. In this structure, the first threaded rod 22 can be threadedly connected with the threaded connecting port 21, so that when the connecting end block 8 is pushed upward by the repulsive force of the trigger spring 9, the threaded connecting port 21 will exert an upward thrust on the first threaded rod 22, causing the first threaded rod 22 to rotate by thread sliding, so that the connecting seat block 24 can rotate when the connecting end block 8 moves, and the movable bin 30 is relatively rotated with the fixed bin 29 through the detachable connecting assembly, the second threaded transmission assembly is triggered, the sealing block 41 is opened, and the stirring blade 39 rotates in the movable bin 30 to realize stirring, so that the aluminum sulfate solution and the ammonium bicarbonate powder can be mixed and reacted. The hexagonal structure of the guide column 6 can only slide in the guide sleeve 5, but cannot rotate, thereby ensuring the relative rotation of the first threaded rod 22.

[0043] As a preferred embodiment in the present embodiment, as shown in Figure 2 、 Figure 3 and Figure 5 , the limiting assembly includes a fixed sleeve block 26 fixedly arranged on the inner wall of a group of columns 14, and a limiting block 27 with a longitudinal cross section in the shape of a triangle is movably installed at the opening of the inner end of the fixed sleeve block 26. A return spring 28 is transversely arranged in the fixed sleeve block 26, and the two ends of the return spring 28 are respectively abutted with one end of the limiting block 27 arranged in the fixed sleeve block 26 and the inner wall of the fixed sleeve block 26. In this structure, the inclined surface of the limiting block 27 faces downward, the lower end of the fixed sleeve block 26 is provided with an opening communicating with the inside thereof, and the inner end of the limiting block 27 is provided with a pulling end sliding in the opening. Each limiting block 27 can be manually opened and closed by pulling the pulling end. Therefore, when the connecting end block 8 rises to a certain height, the limiting assembly is triggered by abutting against the inclined surface of the limiting block 27, and the limiting assembly can be opened by pulling the pulling end subsequently.

[0044] As a preferred embodiment in the present embodiment, as shown in Figure 5 、 Figure 6 and Figure 7As shown, the detachable connecting assembly includes connecting rods 31, the outer wall of the fixed bin 29 is annularly arranged with the connecting rods 31, and the lower end of the connecting rod 31 is provided with a clamping block 32 in triangular cross section, the upper end of the positioning ring seat 23 is annularly arranged with a clamping groove 33 matched with the clamping block 32, the lower end of the movable bin 30 is fixedly provided with a plug 34 in hexagonal cross section at the central position, and the upper end of the connecting seat block 24 is provided with a plug groove 35 matched with the plug 34 at the central position. In this structure, the lower end edges of the clamping block 32 are all rounded, and the upper side opening edges of the clamping groove 33 are also rounded, so that the clamping block 32 is inserted. This structure locks and fixes the fixed bin 29 by inserting the clamping block 32 into the clamping groove 33, and at the same time, the plug 34 is inserted into the plug groove 35 to conduct torque, so that the movable bin 30 can rotate at the lower side of the fixed bin 29, so that the stirring blade 39 can be stirred in the movable bin 30 for mixing.

[0045] As a preferred embodiment in the present embodiment, as shown in Figure 8 , as shown in Figure 9 and Figure 10 , the second threaded driving assembly includes a movable connecting pipe 40 fixedly arranged at the lower end of the sealing block 41, and the movable connecting pipe 40 is movably inserted into the upper end opening of the positioning connecting pipe 38, the inner wall of the upper end of the fixed bin 29 is annularly arranged with vertical guide rods 42, the outer wall of the sealing block 41 is annularly arranged with guide grooves matched with the guide rods 42, the sealing block 41 slides longitudinally in the annularly arranged guide rods 42 through the guide grooves, the movable connecting pipe 40 is annularly arranged with connecting holes 43, the lower end opening of the movable connecting pipe 40 is fixedly provided with a threaded sleeve block 44, and a second threaded rod 45 matched with the threaded sleeve block 44 is threadedly inserted into the threaded sleeve block 44, and the lower end of the second threaded rod 45 is fixedly connected with the lower end inner wall of the movable bin 30. This structure makes the movable bin 30 trigger rotation, the threaded sleeve block 44 can be raised on the second threaded rod 45 through the thread and drive the sealing block 41 to open the upper side opening of the positioning connecting pipe 38, so that the solution in the fixed bin 29 can flow into the movable connecting pipe 40 through the connecting holes 43, and enter the movable bin 30. The guide rods 42 are used to limit the sealing block 41, so that the sealing block 41 can slide up and down through the guide grooves, but cannot rotate, so as to ensure that the threaded action of the threaded sleeve block 44 and the second threaded rod 45 is normal.

[0046] As a preferred embodiment in the present embodiment, as shown in Figure 8 , Figure 9 and Figure 11As shown in the figure, the one-way valve assembly comprises a gas hole 47 in the upper end of the fixed bin 29 and connected with the outer threaded connector 46, the inner upper side of the outer threaded connector 46 is fixedly connected with a fixed seat 48, the inner lower side of the outer threaded connector 46 is movably provided with a movable seat 49, and the movable seat 49 is located at the lower side of the fixed seat 48, a connecting spring 50 is longitudinally arranged between the fixed seat 48 and the transmission tooth 19, and the upper and lower ends of the connecting spring 50 are fixedly connected with the opposite end of the fixed seat 48 and the movable seat 49 respectively, and the lower end of the movable seat 49 is fixedly provided with a valve block 51 matched with the gas hole 47. Among them, the outer diameter of the movable seat 49 is matched with the inner diameter of the outer threaded connector 46, and the center positions of the fixed seat 48 and the movable seat 49 are circular, and the outer side of the circular center is arrayed with a sector block, and the gap of the sector block is used for gas passing. This structure is used to close the gas hole 47 in the normal state, and after the aluminum sulfate solution and the ammonium bicarbonate powder are mixed to generate carbon dioxide, the pressure in the fixed bin 29 and the movable bin 30 is increased, so that the valve block 51 is pushed open, so that the carbon dioxide gas can be filled into the air bag 53.

[0047] As a preferred embodiment in this embodiment, as shown in Figure 1 、 Figure 9 、 Figure 11 and Figure 12 , the threaded connection assembly comprises an inner threaded connector 52 threaded on the outer threaded connector 46, the inner threaded connector 52 is fixedly arranged at the opening of the air bag 53, the outer wall of the inner threaded connector 52 is provided with a sliding groove 54, the sliding groove 54 is slidably provided with a sliding block 55, and the outer side of the outer threaded connector 46 is provided with an axial limiting groove 56 matched with the sliding block 55. This structure is used to insert the sliding block 55 into the axial limiting groove 56, so that the outer threaded connector 46 and the inner threaded connector 52 cannot continue to rotate after being screwed, so as to avoid the misrotation caused by external force contact, and to avoid the loosening of the connection, which affects the sealing effect and the connection stability.

[0048] Working principle: before use, first press the connecting end block 8 downward, so that the trigger spring 9 is compressed, at the same time, the guide column 6 drives the rubber piston head 7 to touch the inside bottom of the sampling cylinder 1, then press the two sets of limiting plates 16 against each other, so that the inner end of the limiting plate 16 is inserted into the limiting groove 20, so as to limit the connecting end block 8, so that the trigger spring 9 cannot be triggered naturally, at the same time, the limiting plate 16 will drive the meshing transmission gear 18 to rotate through the transmission gear 19, and the transmission gear 18 on the other end will drive the transmission gear 18 on the other end to rotate through the rotating shaft 17, so that the connecting tooth rod 13 on the other end moves downward and drives the trigger end sleeve 11 to stretch out from the guide groove 10 and place outside the sampling head 4, then rotate the movable bin 30 at the lower end of the fixed bin 29, so that the second threaded rod 45 and the threaded sleeve block 44 are screwed, so that the threaded sleeve block 44 drives the movable connecting pipe 40 and the sealing block 41 to move downward by screwing, so that the sealing block 41 is attached to the lower inner wall of the fixed bin 29, after tightening, insert the plug 34 into the insertion slot 35, at the same time, pinch the connecting rod 31, so that the connecting rod 31 is folded, and the clamping block 32 is inserted into the clamping groove 33, then release the connecting rod 31, the connecting rod 31 will be reset by elastic force, so that the clamping block 32 is clamped in the clamping groove 33, then unscrew the two sets of threaded plugs 37 in turn, and inject aluminum sulfate solution and ammonium bicarbonate powder into the fixed bin 29 and the movable bin 30 respectively, then screw the threaded plug 37 in the threaded feeding port 36 again, screw the air bag 53 on the air bag 53 on the outer threaded connector 46, and slide the slider 55 along the sliding groove 54 downward, so that the slider 55 is inserted into the axial limiting groove 56, which is installed, as shown in Figures 1 to 3

[0049] ​When in use, the counterweight head 2 is ensured to be as vertical as possible when thrown into the water, and the device will sink to the bottom of the water due to the weight of the counterweight head 2, and the guide vanes 25 can play the role of boosting and rotating through the array structure during the process, so that the device can smoothly sink to the bottom. When sinking to the bottom, the trigger end sleeve 11 will first contact the water bottom and be forced to move upward due to the impact, causing the connecting tooth rod 13 to move upward and rotate the meshing transmission gear 18, which will drive the transmission gear 18 at the other end to rotate through the rotating shaft 17, causing the two sets of limiting plates 16 to be displaced to the sides by the transmission gear 18 and the meshing transmission gear teeth 19, and exit from the limiting groove 20, causing the connecting end block 8 to be no longer limited, and the trigger spring 9 in the compressed state will immediately push the connecting end block 8 upward through the restoring force, and when the connecting end block 8 moves upward, it will drive the rubber piston head 7 to move upward along the sampling cylinder 1 through the guide column 6, thereby using negative pressure to extract the water and part of the silt passing through the sampling head 4 to the sampling cylinder 1 to store, thereby completing sampling. At the same time, the connecting end block 8 will rotate the first threaded rod 22 through the threaded connection of the threaded connection port 21 and the first threaded rod 22, causing the first threaded rod 22 to rotate, which will drive the connecting seat block 24 to rotate, and when the connecting seat block 24 rotates, the stirring blade 39 will stir in the movable bin 30, and the threaded sleeve block 44 will move in screw with the second threaded rod 45, and drive the movable connecting pipe 40 and the sealing block 41 to move upward. After the sealing block 41 no longer fits with the inner wall of the lower side of the fixed bin 29, the aluminum sulfate solution in the fixed bin 29 will enter the movable connecting pipe 40 through the connecting hole 43, and flow into the movable bin 30 to contact with the ammonium bicarbonate powder, and assisted by the rotation of the stirring blade 39 to realize mixing reaction, thereby generating carbon dioxide gas. The gas will cause the internal pressure of the fixed bin 29 and the movable bin 30 to increase, causing the valve block 51 to be pushed open upward under pressure, and the movable seat 49 will move upward and compress the movable seat 49. After the air hole 47 is opened, the gas will enter the air bag 53 through the outer threaded connector 46 and the inner threaded connector 52, and inflate the air bag 53, thereby causing the air bag 53 to generate buoyancy, causing the device to float to the water surface by buoyancy. Subsequently, the operator can pick up the device on the water surface, and after the connecting end block 8 continuously moves upward, it will contact the inclined surface of the limiting block 27 and press it, causing it to enter the fixed sleeve block 26 and compress the reset spring 28. After the connecting end block 8 passes through the limiting block 27, the reset spring 28 in the compressed state will push the limiting block 27 to reset through the restoring force, causing the limiting block 27 to be limited by the connecting end block 8, so that the connecting end block 8 will not be displaced due to external force when moving, causing the rubber piston head 7 to move downward in the sampling cylinder 1, causing the sample in the sampling cylinder 1 to flow out. After the operator picks up the device, the limiting assembly needs to be opened, and the connecting end block 8 is pressed, so that the rubber piston head 7 pushes the sample in the sampling cylinder 1 out to store the sample in the corresponding sample storage device.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

[0051] In the description of this application, it should be understood that the terms "front", "rear", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A water-use underwater self-entry sampling device, characterized by: The invention comprises a sampling tube (1), wherein the lower end of the sampling tube (1) is fixedly connected to a counterweight head (2), and the lower end of the counterweight head (2) is provided with a sampling port (3) communicating with the interior of the sampling tube (1), the upper end opening of the sampling tube (1) is fixedly connected to a guide sleeve (5), and a guide column (6) is movably inserted in the guide sleeve (5), the lower end of the guide column (6) is fixedly connected to a rubber piston head (7), the upper end of the guide column (6) is fixedly connected to a connecting end block (8), and a trigger spring (9) is vertically arranged between the connecting end block (8) and the guide sleeve (5), and the trigger spring (9) is movably sleeved. On the guide column (6), a trigger end sleeve (11) is provided on the lower side of the counterweight head (2), and columns (14) are symmetrically fixedly connected on both sides of the upper end of the counterweight head (2), and the inner sides of the two groups of columns (14) are provided with limit plates (16) through gear transmission components, and the two ends of the connecting end block (8) are symmetrically provided with limit grooves (20) adapted to the inner ends of the limit plates (16), and a limit component is provided on the inner side of one group of the columns (14), and the upper ends of the two groups of columns (14) are fixedly connected with positioning ring seats (23), and a connecting seat is rotatably installed in the positioning ring seat (23). The outer wall of the positioning ring seat (23) is provided with a guide vane (25) in an annular array, the lower side of the connecting seat block (24) is provided with a first threaded transmission component, the upper side of the connecting seat block (24) is provided with a fixed bin (29) and a movable bin (30) through a detachable connecting component, and the fixed bin (29) is located on the upper side of the movable bin (30), the side walls of the fixed bin (29) and the movable bin (30) are both provided with a threaded feed port (36), and the outer end opening of the threaded feed port (36) is connected to a threaded plug (37) through a thread, and the lower side of the fixed bin (29) is provided with a threaded plug (37) through a thread. A positioning connecting pipe (38) is fixedly provided at the end, and the positioning connecting pipe (38) is rotatably installed in the upper end opening of the movable chamber (30), and a stirring blade (39) is provided in an annular array on the outer wall of the positioning connecting pipe (38), and a sealing block (41) is provided at the upper side opening of the positioning connecting pipe (38) through a second threaded transmission component. The upper end of the fixed chamber (29) is provided with an external threaded connector (46), and a one-way valve component is provided in the external threaded connector (46), and an air bag (53) is provided on the external threaded connector (46) through a threaded connection component.

2. The underwater self-entry sampling device for water utilization according to claim 1, characterized in that: The lower opening of the sampling port (3) is connected to a sampling head (4) via a thread, and the sampling head (4) is hemispherical, with circular holes equidistantly formed on the surface of the sampling head (4).

3. The underwater self-entry sampling device for water utilization according to claim 1, characterized in that: A guide groove (10) is provided in the counterweight head (2), the trigger end sleeve (11) is movably inserted into the lower end opening of the guide groove (10), and a waist-shaped water hole (12) is provided in an annular array on the surface of the trigger end sleeve (11).

4. The underwater self-entry sampling device for water utilization according to claim 1, characterized in that: The gear transmission assembly includes a transmission housing (15), the inner ends of the two groups of columns (14) are fixedly connected to the transmission housing (15), the limit plate (16) is slidably arranged in the transmission housing (15), the upper side of the transmission housing (15) is rotatably mounted with a rotating shaft (17), and both ends of the rotating shaft (17) are fixedly connected to a transmission gear (18), a connecting gear rod (13) is vertically movably inserted in the transmission housing (15), and the lower end of the connecting gear rod (13) is movably inserted in the counterweight head (2) and fixedly connected to the upper end of the trigger end sleeve (11), the upper side teeth of the connecting gear rod (13) are meshed with a group of transmission gears (18), and the surface of the limit plate (16) is provided with transmission teeth (19), and the transmission teeth (19) are meshed with another group of transmission gears (18).

5. The underwater self-entry sampling device for water utilization according to claim 1, characterized in that: The first threaded transmission assembly comprises a first threaded rod (22) fixedly arranged at the center position of the lower end of the connecting seat block (24); a threaded connection port (21) adapted to the first threaded rod (22) is opened at the center position of the connecting end block (8); the first threaded rod (22) is inserted into the threaded connection port (21) through a thread; the lower end of the first threaded rod (22) moves in the guide column (6); the cross section of the guide column (6) is hexagonal; the inner diameter of the guide sleeve (5) is adapted to the outer diameter of the guide column (6).

6. The underwater self-entry sampling device for water utilization according to claim 1, characterized in that: The limiting assembly comprises a fixed sleeve (26) fixedly arranged on the inner wall of a group of the uprights (14), and a limiting block (27) with a triangular longitudinal section is movably installed at the inner end opening of the fixed sleeve (26), and a return spring (28) is transversely arranged in the fixed sleeve (26), and the two ends of the return spring (28) respectively abut against one end of the limiting block (27) placed in the fixed sleeve (26) and the inner wall of the fixed sleeve (26).

7. The underwater self-entry sampling device for water utilization according to claim 1, characterized in that: The detachable connection assembly comprises a connecting rod (31), the outer wall of the fixed chamber (29) is provided with a connecting rod (31) in an annular array, and the lower end of the connecting rod (31) is provided with a clamping block (32) with a triangular cross section, the upper end of the positioning ring seat (23) is provided with a clamping groove (33) adapted to the clamping block (32), the lower end center position of the movable chamber (30) is fixedly provided with a plug (34) with a hexagonal cross section, and the upper end center position of the connecting seat block (24) is provided with a slot (35) adapted to the plug (34).

8. The underwater self-entry sampling device for water utilization according to claim 1, characterized in that: The second threaded transmission assembly includes a movable connecting tube (40) fixedly arranged at the lower end of the sealing block (41), and the movable connecting tube (40) is movably inserted into the upper end opening of the positioning connecting tube (38); the upper end inner wall annular array of the fixed bin (29) is provided with a vertical guide rod (42); the outer wall annular array of the sealing block (41) is provided with a guide groove adapted to the guide rod (42); the sealing block (41) slides longitudinally in the guide rod (42) of the annular array through the guide groove; the upper annular array of the movable connecting tube (40) is provided with a connecting hole (43); the inner wall of the lower end opening of the movable connecting tube (40) is fixedly provided with a threaded sleeve (44), and a second threaded rod (45) adapted thereto is threadedly inserted into the threaded sleeve (44); the lower end of the second threaded rod (45) is fixedly connected to the lower end inner wall of the movable bin (30).

9. The underwater self-entry sampling device for water utilization according to claim 1, characterized in that: The one-way valve assembly includes an air hole (47) opened at the upper end of the fixed chamber (29) and connected to the external threaded connector (46); a fixed seat (48) is fixedly connected to the upper inner side of the external threaded connector (46); a movable seat (49) is movably provided on the lower inner side of the external threaded connector (46), and the movable seat (49) is located on the lower side of the fixed seat (48); a connecting spring (50) is longitudinally provided between the fixed seat (48) and the transmission teeth (19), and the upper and lower ends of the connecting spring (50) are respectively fixedly connected to the fixed seat (48) and the end opposite to the movable seat (49); and a valve block (51) adapted to the air hole (47) is fixedly provided at the lower end of the movable seat (49).

10. The underwater self-entry sampling device for water utilization according to claim 1, characterized in that: The threaded connection assembly includes an internal threaded connector (52) that is threadedly sleeved on an external threaded connector (46). The internal threaded connector (52) is fixedly arranged at the opening of the airbag (53). A sliding groove (54) is provided on the outer wall of the internal threaded connector (52), and a slider (55) is slidably provided in the sliding groove (54). An axial limiting groove (56) that is compatible with the slider (55) is provided on the outer side of the external threaded connector (46).

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