Sampling device for water quality monitoring

Abstract

The invention provides a sampling device for water quality monitoring, which is used for solving the problem that a traction cable of a sampling mechanism in the prior art is wound with a driving device of a sampling ship, and comprises a sampling ship, a first driving mechanism, a second driving mechanism, a traction cable, a telescopic mechanism and a sampling mechanism, the telescopic mechanism is arranged on the sampling ship, one end of the traction cable penetrates through the telescopic sleeve to be connected with the sampling mechanism, and when the telescopic mechanism is in an extension state, the underwater depth of the telescopic sleeve is larger than that of the first driving mechanism, so that the traction cable cannot be impacted by water flow when the sampling device is used for sampling; the problems that a traction rope is wound on a first driving mechanism, a sampling mechanism cannot be smoothly put into water or cannot be smoothly recovered to a sampling ship after sampling is completed, and the sampling ship cannot be recovered due to the fact that the sampling ship cannot be started again are solved.

Description

Technical Field

[0001] The invention belongs to the field of environmental monitoring, and in particular relates to a sampling device for water quality monitoring. Background Art

[0002] Water quality monitoring is of great significance for protecting human health, promoting economic development, maintaining ecological balance, rationally utilizing water resources, and formulating water resource management and protection policies. Therefore, we should attach great importance to water quality monitoring, strengthen technological innovation and talent training, and improve the accuracy and reliability of water quality monitoring.

[0003] In order to timely grasp the water pollution status of the water body to be detected, determine the types and spatiotemporal distribution of pollutants in the water, a large amount of sampling work needs to be carried out. In the prior art, in order to sample the water of a large lake or a large river, a sampling mechanism is usually integrated on a sampling ship, and the staff can move the sampling ship to the designated sampling position of the large lake or large river by remote control, and then put the sampling mechanism into the water to complete the sampling work. However, when the sampling mechanism is sampling, it is usually fixed on the sampling ship using a traction rope. After the sampling mechanism is placed in the water, since the water in the large lake or large river usually has a certain flow rate, the traction rope is affected by the flow rate of the water, and it will be entangled with the driving mechanism of the sampling ship. For example, when the driving mechanism is a propeller, the traction rope will be entangled on the propeller, resulting in the sampling mechanism cannot be smoothly put into the water or after the sampling is completed, it cannot be smoothly recovered on the sampling ship, and there will be a problem that the sampling ship cannot be started again, resulting in the problem that the sampling ship cannot be recovered. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a sampling device for water quality monitoring, which is used to solve the problem that the traction rope of the sampling mechanism in the prior art may be entangled with the driving device of the sampling ship.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the present invention provides a sampling device for water quality monitoring, comprising: a sampling ship, a first driving mechanism, a second driving mechanism, a traction rope, a telescopic mechanism and a sampling mechanism; the first driving mechanism, the second driving mechanism, the traction rope, the telescopic mechanism and the sampling mechanism are arranged on the sampling ship; the first driving mechanism is used to drive the sampling ship to move; the telescopic mechanism comprises a fixed sleeve and a telescopic sleeve, and the telescopic sleeve is slidably arranged in the fixed sleeve; one end of the traction rope is connected to the second driving mechanism, and the other end passes through the telescopic sleeve and is connected to the sampling mechanism; one end of the telescopic sleeve is used to abut against the sampling mechanism; the telescopic mechanism comprises a telescopic sleeve at least most of which is located in the fixed sleeve The telescopic sleeve is in a shortened state in the cylinder and in an extended state in which at least a small part of the telescopic sleeve is located in the fixed sleeve, and the length of the telescopic sleeve in the fixed sleeve in the shortened state is greater than the length of the telescopic sleeve in the fixed sleeve in the extended state; when the telescopic mechanism is in the extended state, the length of the telescopic sleeve underwater is greater than the length of the first driving mechanism underwater; when the second driving mechanism puts the sampling mechanism into the water for sampling through the traction rope, the telescopic mechanism is in the extended state; when the second driving mechanism takes the sampling mechanism out of the water after sampling through the traction rope, the sampling mechanism drives the telescopic sleeve to slide in the fixed sleeve, so that the telescopic mechanism changes from the extended state to the shortened state.

[0006] Optionally, the telescopic mechanism further includes a guide assembly and a limit assembly; the guide assembly is used to guide the telescopic sleeve to slide in the fixed sleeve; the limit assembly is used to prevent the telescopic sleeve from sliding out of the fixed sleeve; the diameter of the telescopic sleeve is smaller than the inner diameter of the fixed sleeve.

[0007] Optionally, the guide assembly includes a plurality of guide grooves and a plurality of guide blocks, and the guide grooves and the guide blocks are arranged in a one-to-one correspondence; the plurality of guide grooves are arranged at annular intervals on the outer surface of the telescopic sleeve, and the guide grooves run through the entire length of the telescopic sleeve; the plurality of guide blocks are arranged at annular intervals on the inner wall of the fixed sleeve, and the guide blocks extend the entire length of the fixed sleeve; and / or, the telescopic mechanism may further include a guide member, which is a trumpet-shaped structure, a small end of which is connected to one end of the telescopic sleeve for abutting against the sampling mechanism, and a large end of which is arranged toward the sampling mechanism.

[0008] Optionally, the limit assembly includes a plurality of limit blocks and a plurality of limit grooves; the limit blocks and the limit grooves are arranged in a one-to-one correspondence; the plurality of limit blocks are arranged at annular intervals on the end of the telescopic sleeve away from the sampling mechanism; the plurality of limit grooves are arranged at annular intervals on the inner side wall of the fixed sleeve, the limit grooves extend from the end of the fixed sleeve away from the sampling mechanism to the end of the fixed sleeve close to the sampling mechanism, and the limit grooves do not run through the entire length of the fixed sleeve; and / or, the limit assembly also includes a limit cap, which is arranged at the end of the fixed sleeve away from the sampling mechanism; the limit cap includes a through hole for allowing a traction rope to pass through, and the diameter of the through hole is smaller than the outer diameter of the telescopic sleeve.

[0009] Optionally, it also includes two first mounting plates, two second mounting plates, two rotating plates and two third driving mechanisms, and the first mounting plates, the second mounting plates, the rotating plates and the third driving mechanisms are arranged in a one-to-one correspondence; the two first mounting plates are arranged on the same outer side wall of the sampling ship at intervals, the second mounting plate is arranged vertically on the first mounting plate, and the first mounting plate and the second mounting plate are combined to form an L-shaped structure; the third driving mechanism is rotatably arranged on the side wall of the first mounting plate away from the sampling ship, and the output end of the third driving mechanism is rotatably connected to one side wall of the rotating plate; the rotating plate has a folded state and an unfolded state, when the rotating plate is in the folded state, the rotating plate and the second mounting plate are not located on the same horizontal plane; when the rotating plate is in the unfolded state, the rotating plate and the second mounting plate are located on the same horizontal plane; the third driving mechanism is used to drive the rotating plate to rotate so that the rotating plate can be converted between the folded state and the unfolded state.

[0010] Optionally, a fourth driving mechanism is also included, which is used to drive the two first mounting plates to move toward or away from each other; a first clamping member is provided on the first mounting plate, a second clamping member is provided on the second mounting plate, and a third clamping member is provided on the rotating plate. The first clamping member, the second clamping member and the third clamping member are used to clamp the sampling mechanism.

[0011] Optionally, the third driving mechanism includes a telescopic driving member, a fixed end of the telescopic driving member is rotatably connected to the first mounting plate, and an output end thereof is rotatably connected to the rotating plate; one end of the rotating plate is rotatably connected to an end of the second mounting plate away from the first mounting plate; and / or, the fourth driving mechanism includes a screw motor, a first screw, a second screw and a slide rail; the screw motor and the slide rail are arranged on the sampling ship; the first screw and the second screw are arranged on the screw motor, the first screw is connected to one of the first mounting plates through a screw nut, and the second screw is connected to the other first mounting plate through a screw nut; the two first mounting plates are slidably connected to the slide rail; the threads of the two screws are in opposite directions.

[0012] Optionally, the sampling mechanism includes a first mounting seat, a second mounting seat, a hollow shell, a sampling bottle, an elastic fixing component, and a fifth driving mechanism; the hollow shell is a hollow cylindrical structure, the bottom of the hollow shell is connected to the first mounting seat, and the top is connected to the second mounting seat; the elastic fixing component is arranged in the hollow shell; the elastic fixing component includes a first fixed shell, a second fixed shell, an elastic member, and a sampling bottle fixing seat; the first fixed shell is arranged on the first mounting seat, and a first mounting hole is arranged on the first fixed shell, the elastic member and the sampling bottle fixing seat are arranged in the first mounting hole, one end of the elastic member is connected to the bottom of the first mounting hole, and the other end is connected to the bottom of the sampling bottle fixing seat; the second fixed shell is arranged on the second mounting seat, and a second mounting hole is arranged on the second mounting seat, and a liquid inlet hole connected to the second mounting hole is also arranged on the side wall of the second mounting seat, and the fifth driving mechanism is arranged in the second mounting hole for opening or closing the liquid inlet hole; the bottom of the sampling bottle is connected to the sampling bottle fixing seat, and the top is arranged in the second mounting hole.

[0013] Optionally, the fifth driving mechanism includes a driving member, a magnet, a piston, and an electromagnet; the magnet is arranged at the bottom of the second mounting hole, and the electromagnet is connected to the piston; the piston is arranged in the second mounting hole; a limiting member for limiting the piston is also arranged in the second mounting hole, the liquid inlet hole and the limiting member are arranged at intervals, and the limiting member is located on the side close to the second fixed shell and away from the second fixed seat; the driving member is used to change the electromagnetic polarity of the spiral tube so that the spiral tube and the magnet are attracted or repelled.

[0014] Optionally, the traction rope is a hollow flexible rope, and the cable of the driving member is arranged inside the traction rope; and / or, the hollow shell includes a first shell, a second shell and a switch member, the first shell is rotatably connected to the second shell, the fixed end of the switch member is arranged on the first shell, and the movable end thereof is arranged on the second shell.

[0015] As described above, a sampling device for water quality monitoring of the present invention has at least the following beneficial effects: by arranging a telescopic mechanism on the sampling ship, and passing one end of the traction rope through the telescopic sleeve to connect with the sampling mechanism, and when the telescopic mechanism is in the extended state, the depth of the telescopic sleeve under water is greater than the depth of the first driving mechanism under water, thereby ensuring that when the sampling device is sampling, the traction rope will not be entangled on the first driving mechanism due to the impact of the water flow, thereby causing the sampling mechanism to be unable to be smoothly placed underwater or unable to be smoothly recovered to the sampling ship after the sampling is completed, and the sampling ship may be unable to be started again, resulting in the problem that the sampling ship cannot be recovered. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The diagram shows an angled structural diagram of a sampling device for water quality monitoring according to the present invention, in which the telescopic mechanism is in an extended state and the movable plate is in a unfolded state.

[0017] Figure 2 The schematic diagram of the structure of the sampling device for water quality monitoring of the present invention from another angle is shown. At this time, the telescopic mechanism is in a shortened state, the movable plate is in a folded state, and Figure 2 One of the first mounting plate, the second mounting plate, the movable plate and the fourth driving mechanism is omitted.

[0018] Figure 3 The schematic diagram of the structure of a sampling device for water quality monitoring according to the present invention is shown at another angle. At this time, the telescopic mechanism is in a shortened state, and the sampling mechanism, the first mounting plate, the second mounting plate, the movable plate and the fourth driving mechanism are omitted.

[0019] Figure 4 Shown is a schematic structural diagram of a sampling device for water quality monitoring according to another angle of the present invention.

[0020] Figure 5 The diagram shows an angled structural diagram of a sampling device for water quality monitoring according to the present invention, in which the telescopic mechanism is in an extended state and the movable plate is in a unfolded state.

[0021] Figure 6 The diagram shows a comparison of the states of a sampling device for water quality monitoring of the present invention and a prior art solution when subjected to the force of water flow.

[0022] Figure 7 Shown is a schematic structural diagram of the telescopic sleeve of the telescopic mechanism of the present invention.

[0023] Figure 8 It is a schematic structural diagram of a fixed sleeve of the telescopic mechanism of the present invention.

[0024] Fig. 9 Shown is a schematic structural diagram of the limiting cap of the telescopic mechanism of the present invention.

[0025] Fig.10 Shown is a schematic structural diagram of the sampling mechanism of the present invention.

[0026] Fig.11 Shown is a schematic cross-sectional view of the sampling mechanism of the present invention. DETAILED DESCRIPTION

[0027] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0028] Please refer to all the following drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0029] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0030] See also Figure 1-3 The present invention provides a sampling device for water quality monitoring, comprising: a sampling ship 1, a first driving mechanism 2, a second driving mechanism 3, a traction rope 4, a telescopic mechanism 5 and a sampling mechanism 6; the first driving mechanism 2, the second driving mechanism 3, the traction rope 4, the telescopic mechanism 5 and the sampling mechanism 6 are arranged on the sampling ship 1; the first driving mechanism 2 is used to drive the sampling ship 1 to move; the telescopic mechanism 5 comprises a fixed sleeve 51 and a telescopic sleeve 52, and the telescopic sleeve 52 is slidably arranged in the fixed sleeve 51; one end of the traction rope 4 is connected to the second driving mechanism 3, and the other end passes through the telescopic sleeve 52 and is connected to the sampling mechanism 6; one end of the telescopic sleeve 52 is used to abut against the sampling mechanism 6; the telescopic mechanism 5 comprises At least most of the telescopic sleeve 52 is in a shortened state inside the fixed sleeve 51, and at least a small part of the telescopic sleeve 52 is in an extended state inside the fixed sleeve 51, and the length of the telescopic sleeve 52 inside the fixed sleeve 51 in the shortened state is greater than the length of the telescopic sleeve 52 inside the fixed sleeve 51 in the extended state; when the second driving mechanism 3 puts the sampling mechanism 6 into the water for sampling through the traction rope 4, the telescopic mechanism 5 is in an extended state; when the second driving mechanism 3 takes the sampling mechanism 6 out of the water after sampling through the traction rope 4, the sampling mechanism 6 drives the telescopic sleeve 52 to slide inside the fixed sleeve 51, so that the telescopic mechanism 5 is transformed from the extended state to the shortened state.

[0031] The first driving mechanism 2 may include a driving motor 31, a steering assembly, a driving blade and other structures. Since the first driving mechanism 2 is a common component in an existing sampling ship 1 or a ship, the specific transmission and structural form will not be described in detail here. In this embodiment, the first driving mechanism 2 is arranged at the bottom of the sampling ship 1, and is used to drive the sampling ship 1 to move on the water surface. The cabin of the sampling ship 1 is provided with a battery for powering all structures of the sampling device that require electricity, and a control mechanism for receiving control signals and controlling the sampling device to perform corresponding actions. The battery and the control mechanism are existing technologies, and will not be described in detail in this embodiment.

[0032] The sampling vessel 1 may include a mounting bracket 11 for mounting a fixing sleeve 51, such as Figure 1 As shown, the mounting bracket 11 may include a first fixing plate 111, a plurality of mounting posts 112 and a second fixing plate 113. The first fixing plate 111 is mounted on the upper top surface of the tail of the sampling vessel 1. One end of the plurality of mounting posts 112 is connected to the first fixing plate 111, and the other end is connected to the second fixing plate 113. The mounting posts 112 are used to mount the second fixing plate 113 on the first mounting plate 7. The first fixing plate 111 and the second fixing plate 113 are respectively used to be connected to one end of the fixing sleeve 51, so as to fix and install the fixing sleeve 51.

[0033] The second driving mechanism 3 is arranged on the sampling vessel 1, and is used to drive the traction rope 4 to move. Specifically, Figure 4 As shown, the second driving mechanism 3 may include a driving motor 31, a winding wheel 32, a first reversing wheel assembly 33 and a second reversing wheel assembly 34. The driving motor 31 and the winding wheel 32 may be arranged in the cabin, the first reversing wheel assembly 33 is installed on the sampling ship 1 through a gantry, and the second reversing wheel assembly 34 is arranged on the upper top surface of the second fixing plate 113. One end of the traction rope 4 is wound on the winding wheel 32, and the other end is connected to the sampling mechanism 6 after passing through the first reversing wheel assembly 33, the second reversing wheel assembly 34 and the telescopic mechanism 5 in sequence. The driving motor 31 is used to drive the winding wheel 32 to rotate, and then the sampling mechanism 6 is put into the water or taken out of the water through the traction rope 4. The first reversing wheel assembly 33 and the second reversing wheel assembly 34 may respectively include a reversing wheel and a reversing wheel mounting column 112, the reversing wheel is rotatably connected to the reversing wheel mounting column 112, the reversing wheel mounting column 112 of the first reversing wheel assembly 33 is connected to the gantry, and the reversing wheel mounting column 112 of the second reversing wheel assembly 34 is connected to the upper top surface of the second fixed plate 113. The driving motor 31 can drive the winding wheel 32 to rotate by gear transmission. In this embodiment, the driving motor 31 drives the winding wheel 32 to rotate by belt transmission. Specifically, a first pulley is provided on the output shaft of the driving motor 31, and a second pulley is provided on the winding wheel 32. Belts are sleeved on the first pulley and the second pulley to transmit the power of the driving motor 31 to the winding wheel 32.

[0034] It can be understood that the length of the telescopic sleeve 52 is greater than the height of the first driving mechanism 2 protruding from the bottom of the sampling vessel 1. Figure 5 As shown, when the telescopic mechanism 5 is in the extended state, the length L1 (cm) of the telescopic sleeve 52 under water is greater than the length L2 (cm) of the first driving mechanism 2 under water, so as to ensure that the traction rope 4 will not be entangled on the first driving mechanism 2 due to the impact of the water flow, thereby causing the sampling mechanism 6 to fail to be smoothly put into the water or fail to be smoothly recovered to the sampling ship 1 after the sampling is completed, and the sampling ship 1 will fail to start again, resulting in the problem that the sampling ship 1 cannot be recovered. More specifically, as Figure 6 As shown, Figure 6 The left side of the diagram is a state where the telescopic mechanism 5 is not provided, and the right side is a state where the telescopic mechanism 5 is provided. When the traction rope 4 is subjected to the force of the water flow to the left (the force of the water flow may be generated by factors such as the flow of water or waves), Figure 6 In the left figure, the traction rope 4 ( Figure 6 In the left figure, the solid line indicates the state where the traction rope 4 is not affected by the force of the water flow, and the dotted line indicates the state where it is affected by the force of the water flow). The traction rope 4 will deviate toward the first driving mechanism 2. When the force of the water flow is large, the traction rope 4 will be entangled on the driving blades and other structures of the first driving mechanism 2. Figure 6 In the right side figure, after the telescopic mechanism 5 is set, part of the structure of the traction rope 4 is always in the telescopic sleeve 52. Under the force of the water flow, the telescopic sleeve 52 will not be offset, thereby ensuring that the traction rope 4 will not be entangled on the first driving mechanism 2.

[0035] The diameter of the telescopic sleeve 52 may be less than or equal to the inner diameter of the fixed sleeve 51, so that the telescopic sleeve 52 can slide in the fixed sleeve 51. Preferably, the diameter of the telescopic sleeve 52 is smaller than the inner diameter of the fixed sleeve 51, so as to reduce the sliding friction between the outer wall of the telescopic sleeve 52 and the inner wall of the fixed sleeve 51.

[0036] See also Figure 7-8 The telescopic mechanism 5 may further include a guide assembly and a limit assembly. The guide assembly is used to guide the telescopic sleeve 52 to slide in the fixed sleeve 51 and prevent the telescopic sleeve 52 from rotating or swinging in the fixed sleeve 51. The limit assembly is used to prevent the telescopic sleeve 52 from sliding out of the fixed sleeve 51.

[0037] Specifically, the guide assembly is used to guide the telescopic sleeve 52 to slide in the extension direction of the fixed sleeve 51, and the guide assembly may include a plurality of guide grooves 531 and a plurality of guide blocks 532, and the guide grooves 531 and the guide blocks 532 are arranged in a one-to-one correspondence; the plurality of guide grooves 531 are arranged at annular intervals on the outer surface of the telescopic sleeve 52, and the guide grooves 531 run through the entire length of the telescopic sleeve 52; the plurality of guide blocks 532 are arranged at annular intervals on the inner side wall of the fixed sleeve 51, and the guide blocks 532 extend the entire length of the fixed sleeve 51. The guide grooves 531 may be rectangular grooves, and the corresponding guide blocks 532 are rectangular strip structures adapted to the rectangular grooves. The side wall of the guide block 532 is used to abut against the side wall of the guide groove 531. On the one hand, it plays a guiding role in the sliding of the telescopic sleeve 52 in the fixed sleeve 51; on the other hand, it can also reduce the contact area between the telescopic sleeve 52 and the fixed sleeve 51, thereby reducing the friction between the two; on the other hand, it can also prevent the telescopic sleeve 52 from swinging in the fixed sleeve 51 or rotating relative to the fixed sleeve 51. In this embodiment, the guide grooves 531 are set to 4, and the 4 guide grooves 531 are arranged at annular intervals on the outer surface of the telescopic sleeve 52. The corresponding guide blocks 532 are also 4, and the 4 guide blocks 532 are also arranged at annular intervals on the inner side of the telescopic sleeve 52. In other implementations, the number of guide grooves 531 and guide blocks 532 can also be 3, 5, etc., which is not limited in this embodiment.

[0038] The limiting assembly may include a plurality of limiting blocks 541 and a plurality of limiting grooves 542; the limiting blocks 541 and the limiting grooves 542 are arranged in a one-to-one correspondence; the plurality of limiting blocks 541 are arranged at annular intervals on the end of the telescopic sleeve 52 away from the sampling mechanism 6; the plurality of limiting grooves 542 are arranged at annular intervals on the inner side wall of the fixed sleeve 51, the limiting grooves 542 extend from the end of the fixed sleeve 51 away from the sampling mechanism 6 to the end of the fixed sleeve 51 close to the sampling mechanism 6, and the limiting grooves 542 do not run through the entire length of the fixed sleeve 51. The limiting grooves 542 may also be rectangular grooves, and the corresponding limiting blocks 541 are rectangular strip structures adapted to the rectangular groove structure. The limiting grooves 542 do not run through the entire length of the fixed sleeve 51, that is, the limiting grooves 542 and the end of the fixed sleeve 51 close to the sampling mechanism 6 form a limiting wall 5421 for limiting the limiting blocks 541 in the extension direction of the fixed sleeve 51. When the telescopic mechanism 5 is in the extended state, the limit block 541 abuts against the limit wall 5421, thereby limiting the telescopic sleeve 52 from sliding further toward the sampling mechanism 6, thereby preventing the telescopic sleeve 52 from slipping out of the fixed sleeve 51 through the end of the fixed sleeve 51 close to the sampling mechanism 6.

[0039] See also Fig. 9The limiting mechanism may further include a limiting cap 55, which is arranged at the end of the fixed sleeve 51 away from the sampling mechanism 6; the limiting cap 55 includes a through hole 551 for the traction rope 4 to pass through, and the diameter of the through hole 551 is smaller than the outer diameter of the telescopic sleeve 52. The limiting cap 55 and the fixed sleeve 51 can be connected by means of snap connection or the like. In this embodiment, the limiting cap 55 and the fixed sleeve 51 are connected by threads. Specifically, the limiting cap 55 also includes a threaded hole 552, and the through hole 551 is connected to the threaded hole 552. The outer wall of the fixed sleeve 51 is provided with an external thread, so as to realize the connection between the limiting cap 55 and the fixed sleeve 51 by threads. The bottom of the threaded hole 552 and the through hole 551 form a limiting step 553, which is used to limit the end of the telescopic sleeve 52 away from the sampling mechanism 6, so as to prevent the telescopic sleeve 52 from slipping out of the fixed sleeve 51 through the end of the fixed sleeve 51 away from the sampling mechanism 6.

[0040] See also Figure 7 In one embodiment, the telescopic mechanism 5 may further include a guide 56, which is a trumpet-shaped structure, with a small end connected to one end of the telescopic sleeve 52 for abutting against the sampling mechanism 6, and a large end disposed toward the sampling mechanism 6. Specifically, the inner diameter of the small end of the guide 56 is greater than or equal to the inner diameter of the telescopic sleeve 52 and smaller than the outer diameter of the telescopic sleeve 52, so that the guide 56 can be fixedly mounted on the telescopic sleeve 52. The outer diameter of the small end of the guide 56 may be greater than the outer diameter of the fixed sleeve 51, so that when the telescopic mechanism 5 is in a shortened state, the side wall of the small end of the guide 56 may abut against one end of the fixed sleeve 51 close to the sampling mechanism 6, thereby limiting the movement of the telescopic sleeve 52. It is understandable that the setting of the limit cap 55 may be canceled at this time, or the sampling cap and the guide 56 may be provided at the same time to ensure the stability of the operation of the telescopic mechanism 5. As shown in FIG. *, the guide member 56 is set as a trumpet-shaped structure, which can limit the traction rope 4 and further prevent the traction rope 4 from being entangled with the first driving mechanism 2 under the impact of the water flow.

[0041] The working principles of the second driving mechanism 3, the telescopic mechanism 5 and the sampling mechanism 6 are as follows: in the initial state, the telescopic mechanism 5 is in a shortened state, one end of the telescopic sleeve 52 abuts against the sampling mechanism 6, and the other end abuts against the limiting step 553 of the limiting cap 55; at this time, since the second driving mechanism 3 does not drive the sampling mechanism 6 to move, the relative position of the telescopic sleeve 52 and the fixed sleeve 51 will not change under the action of both the limiting cap 55 and the sampling mechanism 6.

[0042] When the second driving mechanism 3 moves to move the sampling mechanism 6 downward, that is, when the sampling mechanism 6 is placed in the water, the telescopic sleeve 52 can move downward with the sampling mechanism 6 due to the downward movement of the sampling mechanism 6, by its own weight, until the limit block 541 abuts against the limit wall 5421, so that the telescopic mechanism 5 is in an extended state. At this time, the second driving mechanism 3 continues to move the sampling mechanism 6 downward, so that the sampling mechanism 6 continues to sink in the water, until the sampling mechanism 6 reaches a specific water depth, so as to complete the sampling of the specific water depth.

[0043] After the sampling is completed, the second driving mechanism 3 moves in the reverse direction, driving the sampling mechanism 6 to rise, and during the rising process of the sampling mechanism 6, the sampling mechanism 6 abuts against the telescopic sleeve 52. Then the sampling mechanism 6 continues to rise, driving the telescopic sleeve 52 to rise synchronously, until the end of the telescopic sleeve 52 away from the sampling mechanism 6 abuts against the limit cap 55, thereby realizing the transformation of the telescopic mechanism 5 from the extended state to the shortened state.

[0044] See also Figure 1-3 In one embodiment, the sampling device further comprises two first mounting plates 7, two second mounting plates 8, two rotating plates 9 and two third driving mechanisms 10, and the first mounting plates 7, the second mounting plates 8, the rotating plates 9 and the third driving mechanisms 10 are arranged one by one; the two first mounting plates 7 are arranged at intervals on the same outer side wall of the sampling ship 1, the second mounting plate 8 is arranged vertically on the first mounting plate 7, and the first mounting plate 7 and the second mounting plate 8 are combined to form an L-shaped structure; the third driving mechanism 10 is rotatably arranged on the side wall of the first mounting plate 7 away from the sampling ship 1, and the output end of the third driving mechanism 10 is rotatably connected to one side wall of the rotating plate 9; the rotating plate 9 has a folded state and an unfolded state. When the rotating plate 9 is in the folded state, the rotating plate 9 and the second mounting plate 8 are not located on the same horizontal plane; when the rotating plate 9 is in the unfolded state, the rotating plate 9 and the second mounting plate 8 are located on the same horizontal plane; the third driving mechanism 10 is used to drive the rotating plate 9 to rotate so that the rotating plate 9 can be converted between the folded state and the unfolded state.

[0045] The rotating plate 9 has a folded state and an unfolded state. When the rotating plate 9 is in the folded state, the rotating plate 9 and the second mounting plate 8 are perpendicular to each other, and the rotating plate 9 and the first mounting plate 7 are parallel to each other; when the rotating plate 9 is in the unfolded state, the rotating plate 9 and the second mounting plate 8 are located on the same horizontal plane; the third driving mechanism 10 is used to drive the rotating plate 9 to rotate so that the rotating plate 9 can be switched between the folded state and the unfolded state.

[0046] The first mounting plate 7 is arranged on the side wall of the tail of the sampling vessel 1, and the sampling mechanism 6 is located at the interval between the two first mounting plates 7. The lower side of the second mounting plate 8 is used to contact the water surface, so as to increase the contact area between the sampling vessel 1 and the water surface, thereby increasing the buoyancy of the sampling vessel 1. When the rotating plate 9 is in the unfolded state, the lower side of the rotating plate 9 is also in contact with the water surface, thereby also increasing the contact area between the sampling vessel 1 and the water surface. Specifically, when the sampling mechanism 6 is located in the water, the traction rope 4 will be offset due to the effect of the water flow, for example Figure 5 When the traction rope 4 is subjected to a force acting to the right, it will shift backward, causing the center of gravity of the sampling ship 1 to shift to the right, and in severe cases, the sampling ship 1 will sink. This embodiment increases the buoyancy of the sampling ship 1 by setting a rotating plate 9, thereby ensuring that the sampling device can still maintain a balanced state during sampling, ensuring that the sampling work can be completed smoothly. When the rotating plate 9 is in a folded state, the rotating plate 9 and the second mounting plate 8 are not on the same horizontal plane, thereby reducing the contact area between the sampling ship 1 and the water surface, making it easier for the first drive mechanism 2 to drive the sampling ship 1 to move.

[0047] See also Figure 5 , the third driving mechanism 10 may include a telescopic driving member 101, the fixed end of the telescopic driving member 101 is rotatably connected to the first mounting plate 7, and the output end thereof is rotatably connected to the rotating plate 9; one end of the rotating plate 9 is rotatably connected to the end of the second mounting plate 8 away from the first mounting plate 7. Specifically, the telescopic driving member 101 may be a telescopic driving element such as a cylinder. In this embodiment, the telescopic driving member 101 is an electric telescopic rod, the fixed end of the electric telescopic rod is rotatably connected to the first mounting plate 7, and the movable end (output end) is rotatably connected to the side of the rotating plate 9 away from the second mounting plate 8. The rotating plate 9 and the second mounting plate 8 may be connected through a structure such as a hinge. In this embodiment, the rotating plate 9 and the mounting plate are connected through a rotating shaft. Specifically, a notch is provided at the end of the second mounting plate 8 away from the first mounting plate 7, and a rotating shaft is provided in the notch. A protrusion is provided on the rotating plate 9, and a through hole 551 for connecting with the rotating shaft is provided in the protrusion, that is, the rotating connection is achieved through the cooperation of the rotating shaft and the through hole 551.

[0048] See also Figure 2-3The sampling device may also include a fourth driving mechanism 20, which is used to drive the two first mounting plates 7 to move toward or away from each other; a first clamping member 71 is provided on the first mounting plate 7, a second clamping member 81 is provided on the second mounting plate 8, and a third clamping member 91 is provided on the rotating plate 9. The first clamping member 71, the second clamping member 81 and the third clamping member 91 are used to clamp the sampling mechanism 6. The fourth drive mechanism 20 can be a transmission form such as a belt drive mechanism. In this embodiment, the fourth drive mechanism 20 is a screw drive structure, specifically, the fourth drive mechanism 20 includes a screw motor 201, a first screw 202, a second screw 203 and a slide rail 204; the screw motor 201 and the slide rail 204 are arranged on the sampling ship 1; the first screw 202 and the second screw 203 are arranged on the screw motor 201, the first screw 202 is connected to one of the first mounting plates 7 through a screw nut, and the second screw 203 is connected to the other first mounting plate 7 through a screw nut; the two first mounting plates 7 and the slide rail 204 are slidably connected; the threads of the two screws are opposite. The screw motor 201 can be a through-type screw motor 201, and the through-type screw motor 201 has a screw that penetrates the motor. The first screw 202 of this embodiment corresponds to one end of the screw extending from the two ends of the through-type screw motor 201. A fixing piece is provided at one end of the first screw rod 202 and the second screw rod 203 away from the screw motor 201, and the first screw rod 202 and the second screw rod 203 are respectively rotatably connected to the fixing piece, and the fixing piece is fixedly provided on the sampling ship 1, so as to realize that the first screw rod 202 and the second screw rod 203 are fixed relative to the sampling ship 1. The outer side of the screw motor 201 can be covered with a waterproof cover 205 to prevent the screw motor 201 from entering water when the sampling ship 1 is working, and also to prevent the sampling mechanism 6 from colliding with the screw motor 201, thereby affecting its life. Two guide rails can be provided, which are symmetrically arranged relative to the central axis of the first screw rod 202 and the second screw rod 203, and are used to ensure the stability of the operation of the first mounting plate 7 and the second mounting plate 8. The first clamping member 71 is arranged on the side of the first mounting plate 7 away from the sampling ship 1, and is used to abut against the top and side of the sampling mechanism 6; the second clamping member 81 is arranged on the side of the top surface of the second mounting plate 8 close to the sampling mechanism 6, and is an arc-shaped structure, which is used to abut against one end of the side of the sampling mechanism 6 close to the bottom, and the top surface of the second mounting plate 8 is also used to contact the bottom surface of the sampling mechanism 6, and then work together with the second clamping member 81 to fix the bottom of the sampling mechanism 6; the second clamping member 81 is arranged on the side where the rotating plate 9 is connected to the telescopic driving member 101, and is used to abut against the top and side of the sampling mechanism 6. The first clamping member 71 and the third clamping member 91 can respectively include a support column 711 and a clamping block 712; the clamping block 712 of the first clamping member 71 is installed on the first mounting plate 7 through the support column 711, and the clamping block 712 of the third clamping member 91 is installed on the rotating plate 9 through the support column 711.The clamping block 712 includes a first clamping portion 7121 and a second clamping portion 7122. The first clamping portion 7121 may be an arc-shaped structure formed by cutting on the clamping block 712, and its arc-shaped structure is adapted to the outer side surface of the sampling mechanism 6 so as to be able to abut against the outer side surface of the sampling mechanism 6. The second clamping portion 7122 is a step-shaped structure formed on the clamping block 712 after cutting the first clamping portion 7121, and is used to abut against the upper top surface of the sampling mechanism 6. Of course, the first clamping member 71 and the second clamping member 81 may also be other structural forms, which are not limited in this embodiment.

[0049] During the transportation of the sampling device, the first clamping member 71, the second clamping member 81, and the third clamping member 91 maintain the clamping of the sampling mechanism 6 to ensure that the sampling mechanism 6 will not swing due to the operation of the sampling ship 1, thereby increasing the burden of the second driving mechanism 3. When the sampling device runs to the specified position, the fourth driving mechanism 20 drives the two mounting plates to move in opposite directions, so that the first clamping member 71, the second clamping member 81, and the third clamping member 91 cancel the clamping of the sampling mechanism 6, and then the third driving mechanism 10 converts the rotating plate 9 into a non-folding device, and uses the rotating plate 9 to increase the buoyancy of the sampling ship 1; finally, the second driving mechanism 3 puts the sampling mechanism 6 into the water to complete the sampling. When the sampling is completed, the second driving mechanism 3 takes the sampling mechanism 6 out of the water. Then the third driving mechanism 10 transforms the rotating plate 9 into a folded state, and finally the fourth driving mechanism 20 drives the two first mounting plates 7 to move toward each other, so that the first clamping member 71 , the second clamping member 81 , and the third clamping member 91 clamp the sampling mechanism 6 .

[0050] See also Figure 10-11 In one embodiment, the sampling mechanism 6 includes a first mounting seat 61, a second mounting seat 62, a hollow shell 63, a sampling bottle 64, an elastic fixing assembly 65, and a fifth driving mechanism 66; the hollow shell 63 is a hollow cylindrical structure, the bottom of the hollow shell 63 is connected to the first mounting seat 61, and the top is connected to the second mounting seat 62. The hollow shell 63 can be used to block impurities in the water flow. The first mounting seat 61, the hollow shell 63, and the second mounting seat 62 also play the role of counterweight to ensure that the sampling mechanism 6 can sink into the water.

[0051] The elastic fixing assembly 65 is arranged in the hollow shell 63; the elastic fixing assembly 65 includes a first fixed shell 651, a second fixed shell 652, an elastic member 653, and a sampling bottle fixing seat 654; the first fixed shell 651 and the second fixed shell 652 are cylindrical structures, the first fixed shell 651 is arranged on the first mounting seat 61, and a first mounting hole 6511 is arranged on the first fixed shell 651, and the first mounting hole 6511 is arranged at the center of one end of the first fixed shell 651 away from the first mounting seat 61, and the extension direction of the first mounting hole 6511 is the same as the extension direction of the first fixed shell 651. The elastic member 653 and the sampling bottle fixing seat 654 are arranged in the first mounting hole 6511, one end of the elastic member 653 is connected to the bottom of the first mounting hole 6511, and the other end is connected to the bottom of the sampling bottle fixing seat 654. The elastic member 653 is an elastic structure, such as a gasket made of elastic materials such as rubber; in this embodiment, the elastic member 653 is a spring. The first fixed shell 651 may also be provided with a limiting ring 6512 for limiting the sampling bottle fixing seat 654. The limiting ring 6512 may be set in the mounting hole by means of threads, or may be set by means of screws on one end of the first fixed shell 651 away from the first fixing seat, and is used to prevent the sampling bottle fixing seat 654 from slipping out of the mounting hole.

[0052] The second fixed housing 652 is disposed on the second mounting seat 62, and a second mounting hole 6521 is disposed on the second mounting seat 62. The second mounting hole 6521 is disposed at the center of one end of the second fixed housing 652 away from the second mounting seat 62, and the extension direction of the second mounting hole 6521 is the same as the extension direction of the second fixed housing 652. A liquid inlet hole 6522 communicating with the second mounting hole 6521 is also disposed on the side wall of the second mounting seat 62, and a fifth driving mechanism 66 is disposed in the second mounting hole 6521 for opening or closing the liquid inlet hole 6522.

[0053] The sampling bottle 64 can be a bottle-shaped structure with one end open, or a test tube structure, which is not limited in the present embodiment. The sampling bottle holder 654 can be provided with a structure adapted to the shape of the bottom of the sampling bottle 64. For example, when the bottom of the sampling bottle 64 is arc-shaped, the sampling bottle holder 654 is provided with an arc-shaped groove to better fix the sampling bottle 64. When the sampling bottle 64 is mounted on the first fixed shell 651 and the second fixed shell 652, the bottom of the sampling bottle 64 first abuts against the sampling bottle holder 654, and the elastic member 653 is compressed, and then the opening of the sampling bottle 64 is aligned with the second mounting hole 6521. At this time, the elastic force of the elastic member 653 can be used to set the open end of the sampling bottle 64 in the second mounting hole 6521.

[0054] The fifth driving mechanism 66 may include a driving member, a magnet 661, a piston 662, and an electromagnet 663; the magnet 661 is arranged at the bottom of the second mounting hole 6521, and the electromagnet 663 is connected to the piston 662; the piston 662 is arranged in the second mounting hole 6521; a limiting member 6523 for limiting the piston 662 is also arranged in the second mounting hole 6521, the liquid inlet hole 6522 and the limiting member 6523 are arranged at intervals, and the limiting member 6523 is located on the side close to the second fixed housing 652 away from the second fixed seat, and the limiting member 6523 is used to prevent the piston 662 from coming out of the second mounting hole 6521. The limiting member 6523 can be a limiting block 541 or a limiting ring 6512 and other structures. This embodiment does not limit this, as long as it can prevent the piston 662 from coming out of the second mounting hole 6521. The driving member is used to change the electromagnetic polarity of the spiral tube so that the spiral tube and the magnet 661 are attracted or repelled. The driving component can be a structure such as a circuit board, which is electrically connected to the battery and electromagnet 663 arranged in the sampling ship 1, and is used to change the polarity of the electromagnet 663, so that the electromagnet 663 and the magnet 661 produce an attraction or repulsion effect, so that the piston 662 opens or closes the liquid inlet hole 6522. When the liquid inlet hole 6522 is opened, water can enter the second mounting hole 6521 through the liquid inlet hole 6522 and flow into the sampling bottle 64 to complete the sampling.

[0055] The lower end of the stopper 6523 can also abut against the open end of the sampling bottle 64, that is, it works together with the sampling bottle fixing seat 654 to fix the sampling bottle 64. In addition, in order to prevent the open end of the bottle mouth from being broken when the open end of the sampling bottle 64 abuts against the lower end of the stopper 6523 when the sampling bottle 64 is placed in the first fixed shell 651 and the second fixed shell 652, an elastic structure made of elastic material can be provided at the lower end of the stopper 6523.

[0056] The traction rope 4 can be a hollow flexible rope, and the cable of the driving member can be arranged in the traction rope 4 to facilitate power supply to the electromagnet 663.

[0057] In order to facilitate the removal of the sampling bottle 64 from the hollow shell 63, the first fixing seat and the second fixing seat can be set to be detachably connected with the hollow shell 63, so that the sampling bottle 64 can be placed in the sampling mechanism 6 and taken out from the sampling mechanism 6 before sampling. In this embodiment, the hollow shell 63 includes a first shell 631, a second shell 632 and a switch 633. The first shell 631 is rotatably connected to the second shell 632. The fixed end of the switch 633 is set on the first shell 631, and the movable end is set on the second shell 632. Specifically, the first shell 631 and the second shell 632 are opened and closed by a loose-leaf, and the switch 633 can be a buckle. Of course, the switch 633 can also be other structures, which is not limited in this embodiment. In this embodiment, the sampling bottle 64 and the first fixed shell 651 and the second fixed shell 652 are directly set to be detachably connected, so that the sampling bottle 64 can be easily transported after sampling is completed, and the sampling bottle 64 can be easily cleaned after sampling is completed, thereby preventing cross-contamination between water remaining in the sampling device after multiple uses, thereby affecting subsequent detection results.

[0058] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A sampling device for water quality monitoring, characterized in that: include: A sampling vessel, a first driving mechanism, a second driving mechanism, a traction rope, a telescopic mechanism and a sampling mechanism; The first driving mechanism, the second driving mechanism, the traction rope, the telescopic mechanism and the sampling mechanism are arranged on the sampling ship; the first driving mechanism is used to drive the sampling ship to move; The telescopic mechanism comprises a fixed sleeve and a telescopic sleeve, the telescopic sleeve is slidably arranged in the fixed sleeve; one end of the traction rope is connected to the second driving mechanism, and the other end passes through the telescopic sleeve and is connected to the sampling mechanism; one end of the telescopic sleeve is used to abut against the sampling mechanism; the telescopic mechanism comprises a shortened state in which at least most of the telescopic sleeve is located in the fixed sleeve and an extended state in which at least a small part of the telescopic sleeve is located in the fixed sleeve, and the length of the telescopic sleeve in the fixed sleeve in the shortened state is greater than the length of the telescopic sleeve in the fixed sleeve in the extended state; in the extended state of the telescopic mechanism, the length of the telescopic sleeve underwater is greater than the length of the first driving mechanism underwater; When the second driving mechanism puts the sampling mechanism into the water for sampling through the traction rope, the telescopic mechanism is in an extended state; when the second driving mechanism takes the sampling mechanism out of the water after sampling through the traction rope, the sampling mechanism drives the telescopic sleeve to slide in the fixed sleeve, so that the telescopic mechanism changes from an extended state to a shortened state.

2. A sampling device for water quality monitoring according to claim 1, characterized in that: The telescopic mechanism further includes a guide assembly and a limit assembly; the guide assembly is used to guide the telescopic sleeve to slide in the fixed sleeve; the limit assembly is used to prevent the telescopic sleeve from sliding out of the fixed sleeve; The diameter of the telescopic sleeve is smaller than the inner diameter of the fixed sleeve.

3. A sampling device for water quality monitoring according to claim 2, characterized in that: The guide assembly includes a plurality of guide grooves and a plurality of guide blocks, and the guide grooves and the guide blocks are arranged in a one-to-one correspondence; the plurality of guide grooves are arranged at annular intervals on the outer surface of the telescopic sleeve, and the guide grooves run through the entire length of the telescopic sleeve; the plurality of guide blocks are arranged at annular intervals on the inner side wall of the fixed sleeve, and the guide blocks extend the entire length of the fixed sleeve; And / or, the telescopic mechanism may further include a guide member, which is a trumpet-shaped structure, a small end of which is connected to an end of the telescopic sleeve that is used to abut against the sampling mechanism, and a large end of which is arranged toward the sampling mechanism.

4. A sampling device for water quality monitoring according to any one of claims 2 or 3, characterized in that: The limiting assembly includes a plurality of limiting blocks and a plurality of limiting grooves; the limiting blocks and the limiting grooves are arranged in a one-to-one correspondence; the plurality of limiting blocks are arranged at annular intervals on the end of the telescopic sleeve away from the sampling mechanism; the plurality of limiting grooves are arranged at annular intervals on the inner side wall of the fixed sleeve, the limiting grooves extend from the end of the fixed sleeve away from the sampling mechanism to the end of the fixed sleeve close to the sampling mechanism, and the limiting grooves do not run through the entire length of the fixed sleeve; And / or, the limiting assembly further includes a limiting cap, which is arranged at an end of the fixed sleeve away from the sampling mechanism; the limiting cap includes a through hole for the traction rope to pass through, and the diameter of the through hole is smaller than the outer diameter of the telescopic sleeve.

5. A sampling device for water quality monitoring according to claim 1, characterized in that: It also includes two first mounting plates, two second mounting plates, two rotating plates and two third driving mechanisms, wherein the first mounting plates, the second mounting plates, the rotating plates and the third driving mechanisms are arranged in a one-to-one correspondence; The two first mounting plates are arranged at intervals on the same outer side wall of the sampling ship, the second mounting plate is arranged vertically on the first mounting plate, and the first mounting plate and the second mounting plate are combined to form an L-shaped structure; the third driving mechanism is rotatably arranged on the side wall of the first mounting plate away from the sampling ship, and the output end of the third driving mechanism is rotatably connected to a side wall of the rotating plate; The rotating plate has a folded state and an unfolded state. When the rotating plate is in the folded state, the rotating plate and the second mounting plate are not located on the same horizontal plane; when the rotating plate is in the unfolded state, the rotating plate and the second mounting plate are located on the same horizontal plane; the third driving mechanism is used to drive the rotating plate to rotate so that the rotating plate can be converted between the folded state and the unfolded state.

6. A sampling device for water quality monitoring according to claim 5, characterized in that: It also includes a fourth driving mechanism, and the fourth driving mechanism is used to drive the two first mounting plates to move toward each other or away from each other; The first mounting plate is provided with a first clamping member, the second mounting plate is provided with a second clamping member, the rotating plate is provided with a third clamping member, and the first clamping member, the second clamping member and the third clamping member are used to clamp the sampling mechanism.

7. A sampling device for water quality monitoring according to claim 6, characterized in that: The third driving mechanism comprises a telescopic driving member, a fixed end of which is rotatably connected to the first mounting plate, and an output end of which is rotatably connected to the rotating plate; one end of the rotating plate is rotatably connected to an end of the second mounting plate away from the first mounting plate; And / or, the fourth driving mechanism includes a screw motor, a first screw, a second screw and a slide rail; the screw motor and the slide rail are arranged on the sampling ship; the first screw and the second screw are arranged on the screw motor, the first screw is connected to one of the first mounting plates through a screw nut, and the second screw is connected to the other first mounting plate through a screw nut; the two first mounting plates are slidably connected to the slide rail; the threads of the two screws are in opposite directions.

8. A sampling device for water quality monitoring according to claim 1, characterized in that: The sampling mechanism includes a first mounting seat, a second mounting seat, a hollow shell, a sampling bottle, an elastic fixing component, and a fifth driving mechanism; The hollow shell is a hollow cylindrical structure, the bottom of the hollow shell is connected to the first mounting seat, and the top is connected to the second mounting seat; The elastic fixing assembly is arranged in the hollow shell; the elastic fixing assembly comprises a first fixing shell, a second fixing shell, an elastic member, and a sampling bottle fixing seat; The first fixed shell is arranged on the first mounting seat, a first mounting hole is arranged on the first fixed shell, the elastic member and the sampling bottle fixing seat are arranged in the first mounting hole, one end of the elastic member is connected to the bottom of the first mounting hole, and the other end is connected to the bottom of the sampling bottle fixing seat; The second fixed shell is arranged on the second mounting seat, a second mounting hole is arranged on the second mounting seat, a liquid inlet hole connected with the second mounting hole is also arranged on the side wall of the second mounting seat, and the fifth driving mechanism is arranged in the second mounting hole for opening or closing the liquid inlet hole; the bottom of the sampling bottle is connected to the sampling bottle fixing seat, and the top is arranged in the second mounting hole.

9. A sampling device for water quality monitoring according to claim 8, characterized in that: The fifth driving mechanism includes a driving member, a magnet, a piston, and an electromagnet; The magnet is arranged at the bottom of the second mounting hole, and the electromagnet is connected to the piston; the piston is arranged in the second mounting hole; a limiting member for limiting the piston is also arranged in the second mounting hole, the liquid inlet hole and the limiting member are arranged at intervals, and the limiting member is located on a side close to the second fixed shell and away from the second fixed seat; the driving member is used to change the electromagnetic polarity of the spiral tube so that the spiral tube and the magnet are attracted or repelled.

10. A sampling device for water quality monitoring according to claim 9, characterized in that: The traction rope is a hollow flexible rope, and the cable of the driving member is arranged in the traction rope; And / or, the hollow shell includes a first shell, a second shell and a switch element, the first shell is rotatably connected to the second shell, the fixed end of the switch element is arranged on the first shell, and the movable end thereof is arranged on the second shell.

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