A rapid sampler for seawater quality multi-point detection

Abstract

The application discloses a kind of seawater quality multipoint detection with fast sampler, specifically relates to water sampling technical field, including sampling seat;Water outlet;Inlet;Rotary seat;Annular groove;Connecting pipe;Sample tube;For when sampling seat approaches seabed, trigger action, and extrude seawater in sampling seat to water outlet extrusion part;For when extrusion part resets, drive rotary seat rotation rotary part.Extrusion part extrudes seawater in sampling seat by inlet to water outlet, then extrudes into one connecting pipe by water outlet, immediately into corresponding one sample tube, complete one sample collection, after sampling seat is pulled up again, extrusion part resets, and then make rotary part trigger action, make rotary seat rotate fixed angle, so that the seawater sample of another detection point can enter sample tube, to realize not needing sampling seat and sample tube to be taken out to water surface, different detection point sample collection can also be carried out.

Description

Technical Field

[0001] This invention relates to the field of water sampling technology, and more specifically, to a rapid sampler for multi-point detection of seawater quality. Background Technology

[0002] Marine ecosystems are the most important ecosystems globally, influencing the stability and security of global ecosystems. Human survival, as well as economic, political, cultural, and social development, are all inextricably linked to the ocean. Seawater testing is one of the crucial methods for determining whether marine ecosystems are polluted.

[0003] In existing technologies, when testing seawater, a sampler is first used to collect seawater samples. The sampler currently used mainly consists of a water pump and a sample storage tube. The staff places the water pump above the seawater surface at the testing point and uses the water pump to extract seawater samples. Then, the extracted seawater samples are collected through the sample storage tube, thus completing the sample collection at one testing point. The staff then takes the water pump and another sample storage tube to another testing point and repeats the above sampling process. This operation method requires frequent starting of the water pump and changing different sample storage tubes to collect the samples extracted by the water pump, which is quite inconvenient. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide a rapid sampler for multi-point detection of seawater quality. The technical problem to be solved by the present invention is that the sampling devices in the prior art require frequent starting of the water pump and replacement of different sample storage tubes, which causes operational inconvenience.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rapid sampler for multi-point seawater quality detection, comprising: A hollow sampling base, with an outlet and an inlet respectively passing through its upper and lower ends; A rotating seat is mounted on the sampling seat, and the rotating seat has an annular groove coaxially opened inside to allow the water outlet to pass freely; Multiple connecting pipes are arranged in an array along the axial direction of the rotating seat and pass through the rotating seat. One end of each connecting pipe passes into the annular groove and can contact the end face of the water outlet. A sample tube located at the other end of the connecting tube; Used to trigger an action when the sampling seat approaches the seabed, and to squeeze the seawater in the sampling seat to the squeezing part of the outlet; A rotating part used to drive the rotating seat to rotate when the extrusion part is reset.

[0006] Preferably, the sampling seat is provided with a lifting ring at the top.

[0007] Preferably, the extrusion section includes: A first piston that engages within the sampling seat and can slide freely up and down; A partition is disposed within the sampling seat and located above the water outlet, and the partition and the first piston form a water storage space; A first connecting rod coaxially connected to the first piston and slidingly extending out of the bottom of the sampling seat; A floating plate connected to the lower end of the first connecting rod; A first spring, which is wrapped around the first connecting rod and elastically abuts against the floating plate and the sampling seat at both ends in the direction of elastic force.

[0008] Preferably, the rotating part includes: A rubber ring coaxially connected to the upper end face of the rotating seat; A rotating shaft is horizontally rotatably connected to the sampling seat, and the rotating shaft is located above the partition plate; A rubber wheel is fixedly mounted on the rotating shaft, and the rubber wheel is connected to the upper end face of the rubber ring by friction transmission. A transmission unit for driving the shaft to rotate when the first piston moves.

[0009] Preferably, the transmission unit includes: A second connecting rod is vertically connected to the first piston, and the upper end of the second connecting rod slides out of the partition. A rack portion located at the upper end of the second connecting rod; A gear portion is provided on the rotating shaft, and the gear portion meshes externally with the rack portion; A rotation direction limiting mechanism for restricting the rotation direction of the rotating seat.

[0010] Preferably, the rotation limiting mechanism includes: A locking ring is fixedly fitted onto the sampling seat. The locking ring is located below the rotating seat, and its upper end face is provided with multiple locking grooves arranged in an array along its axial direction. The inner wall of one side of the locking groove is inclined, and the inner wall of the other side is straight. A fixing sleeve is vertically connected to the bottom of the rotating seat along the axial direction of the rotating seat; A telescopic column is telescopically inserted into the fixed sleeve. A ball is rotatably embedded at the lower end of the telescopic column. The ball can roll on the upper surface of the locking ring and can be engaged in the locking groove. An elastic abutment assembly for driving the telescopic column to move downwards.

[0011] Preferably, the elastic abutment component includes: A second spring is provided inside the fixed sleeve, with its two ends in the direction of the spring force elastically abutting against the telescopic column and the rotating seat, respectively. A sliding pin is provided at the upper end of the telescopic column, and a waist-shaped hole is provided on the outer wall of the fixed sleeve for the sliding pin to be inserted.

[0012] Preferably, the upper end of the second connecting rod is provided with a second piston, which is engaged in the sampling seat and can slide freely up and down. The second piston and the inner top wall of the sampling seat form a rinsing chamber. The lower end of the sampling seat is provided with a rinsing port on its outer wall. The rinsing port and the rinsing chamber are connected by a water pipe. The upper end of the sampling seat is provided with a communication port on its outer wall.

[0013] The technical effects and advantages of this invention are as follows: By setting up a squeezing part, after the sampling seat is lowered into the seawater, when the sampling seat approaches the seabed surface, the weight of the sampling seat will trigger the squeezing part, which will then squeeze the seawater entering the sampling seat from the inlet to the outlet, and then from the outlet into one of the connecting tubes, and then into the corresponding sample tube to complete one sample collection. After pulling the sampling seat upward, the squeezing part resets, which will trigger the rotating part to rotate the rotating seat to a fixed angle, thereby rotating another sample tube to correspond to the outlet. The sampling seat is then lowered again, so that seawater samples from other detection points can enter the sample tube. This allows for sample collection from different detection points without having to remove the sampling seat and sample tubes above the water surface. By setting up a squeezing section and having a floating plate in contact with the seabed, the floating plate moves relative to the sampling seat under its own weight. The floating plate drives the first piston to move upward, squeezing the seawater sample that enters the sampling seat through the inlet to the outlet. Since it only needs to rely on the weight of the sampling seat and the floating plate to contact the seabed, it can automatically collect seawater samples without the need for water pumps or motors and other electrical components, thereby reducing manufacturing costs. It can also collect samples automatically without human intervention. By setting the rotation direction limiting mechanism to restrict the rotation of the rotating seat when the first piston moves upward, and the rotation direction limiting mechanism to restrict the rotation direction of the rotating seat to fail when the first piston moves downward, the first piston can drive the rotating seat to rotate at a fixed angle when it moves downward, thereby realizing the rotating seat to rotate at the same angle along a fixed direction. This allows multiple sample tubes to automatically rotate to the position corresponding to the water outlet after each sampling, thereby realizing the automatic replacement of different sample tubes to collect seawater samples. By setting up a flushing chamber, a flushing port, and a second piston, when the first piston moves upward, it simultaneously drives the second piston to move upward. This allows the second piston to squeeze the seawater entering the flushing chamber through the connecting port into the water pipe, and then into the sampling seat through the water pipe. It also flushes the seawater and benthic organisms and other debris in the space between the first piston and the bottom wall of the sampling seat, allowing the benthic organisms and other debris to be flushed out from the inlet, thus avoiding affecting the sample accuracy of the next seawater sample collection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a rapid sampler for multi-point detection of seawater quality according to the present invention; Figure 2 for Figure 1 Cross-sectional view of the middle structure; Figure 3 for Figure 1 Schematic diagram of the explosive decomposition of the medium structure; Figure 4 for Figure 1 A front view of the central structure; Figure 5 for Figure 4 A schematic diagram of the structure omitting the sampling seat and sample tube; Figure 6 for Figure 5 A schematic diagram of the structure viewed from below; Figure 7 This is a schematic diagram of the rotating seat in this invention; Figure 8 for Figure 7 Cross-sectional view of the middle structure; Figure 9 This is a schematic diagram of the locking ring structure in this invention; Figure 10 This is a schematic diagram of the structure of the telescopic column, ball bearings and sliding pin after assembly in this invention.

[0015] The attached figures are labeled as follows: 1-Hanging ring, 2-Sampling seat, 3-Rubber wheel, 4-Rotating seat, 5-Locking ring, 6-First spring, 7-Floating plate, 8-First connecting rod, 9-Sample tube, 10-Fixing sleeve, 11-Connecting pipe, 12-Rubber ring, 13-Water pipe, 14-Second piston, 15-Rinsing chamber, 16-Gear section, 17-Rotating shaft, 18-Partition plate, 19-Rinsing port, 20-First piston, 21-Water inlet, 22-Second connecting rod, 23-Rack section, 24-Water outlet, 25-Locking groove, 26-Annular groove, 27-Oval hole, 28-Sliding pin, 29-Telescopic column, 30-Ball, 31-Connecting port. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] like Figures 1-10 As shown, the present invention provides: a rapid sampler for multi-point detection of seawater quality, comprising: The sampling seat 2 is hollow inside and is made entirely of metal. The upper and lower ends of the sampling seat 2 are respectively provided with an outlet 24 and an inlet 21. Both the inlet 21 and the outlet 24 are connected to the interior of the sampling seat 2. The sampling seat 2 is hoisted by external hoisting equipment or directly by workers using cables and lowered into the seawater. The weight of the sampling seat 2 is greater than the buoyancy of the seawater, so the sampling seat 2 can sink into the seawater. When the sampling seat 2 sinks into the seawater, the seawater will enter the interior of the sampling seat 2 through the inlet 21. Rotary seat 4 is mounted on sampling seat 2. The interior of rotating seat 4 is coaxially provided with an annular groove 26 for the outlet 24 to pass freely. The connection between rotating seat 4 and sampling seat 2 is sealed by a dynamic sealing ring. In order to ensure that the seawater in sampling seat 2 does not flow out of outlet 24 on its own, a one-way valve can be installed at the opening of outlet 24 so that seawater can only flow out of outlet 24 when there is a certain pressure inside sampling seat 2. Multiple connecting pipes 11 are arranged in an array along the axial direction of the rotating seat 4. One end of the connecting pipe 11 is inserted into the annular groove 26 and can contact the end face of the outlet 24. The connecting pipe 11 can be inserted into the rotating seat 4. Specifically, four through holes are opened on the outer periphery of the rotating seat 4. An annular sealing ring is installed in the through holes. The horizontal section of the connecting pipe 11 is inserted into the annular sealing ring, so that the connecting pipe 11 is inserted into the rotating seat 4. A sample tube 9 is located at the other end of the connecting tube 11, and the opening of the sample tube 9 is connected to the inside of the connecting tube 11. Used to trigger an action when the sampling seat 2 is close to the seabed, and to squeeze the seawater in the sampling seat 2 to the squeezing part of the outlet 24; A rotating part used to drive the rotating seat 4 to rotate when the extrusion part is reset.

[0018] In the rapid sampler for multi-point detection of seawater quality described in this invention, during the lowering process of the sampling seat 2, seawater will enter the sampling seat 2 from the inlet 21. When the sampling seat 2 approaches the seabed, the squeezing part will be triggered, thereby squeezing the seawater inside the sampling seat 2 to the outlet 24. Then, the seawater will enter the connecting pipe 11 from the outlet 24, so that the seawater sample can enter the sample tube 9 for storage.

[0019] like Figures 1-10 As shown, the top of the sampling seat 2 is equipped with a lifting ring 1. Specifically, a tie rod is vertically welded to the top of the sampling seat 2, and a lifting ring 1 is welded to the upper end of the tie rod. A cable is attached to the lifting ring 1, and the cable is connected to a lifting device above the water surface. The lifting device then lifts the lifting ring 1.

[0020] like Figures 1-10 As shown, the extrusion section includes: The first piston 20 is engaged within the sampling seat 2 and can slide freely up and down. The outer diameter of the first piston 20 matches the inner diameter of the sampling seat 2. When the first piston 20 slides up and down inside the sampling seat 2, it can exert a squeezing effect on the seawater inside the sampling seat 2. A partition 18 is installed inside the sampling seat 2 and located above the outlet 24. The partition 18 is welded to the inner wall of the sampling seat 2. The partition 18 and the first piston 20 form a water storage space. During the lowering of the sampling seat 2, seawater will enter the water storage space from the inlet 21. A first connecting rod 8 is coaxially connected to the first piston 20 and slides out of the bottom of the sampling seat 2. The bottom of the sampling seat 2 has a through hole for the first connecting rod 8 to pass through freely. A floating plate 7 is connected to the lower end of the first connecting rod 8, and the thickness direction of the floating plate 7 is parallel to the length direction of the first connecting rod 8; The first spring 6, which is wrapped around the first connecting rod 8 and elastically abuts against the floating plate 7 and the sampling seat 2 at both ends in the direction of elastic force, has a downward elastic abutting force on the floating plate 7.

[0021] In the rapid sampler for multi-point seawater quality testing described in this invention, in the initial state, the first spring 6 exerts a downward elastic resisting force on the floating plate 7, causing the first piston 20 to move downward within the sampling seat 2 until the upper end of the first piston 20 is lower than the lower edge of the inlet 21. When the floating plate 7 contacts the seabed surface, due to the weight of the sampling seat 2, the floating plate 7 moves upward relative to the sampling seat 2, thereby causing the first piston 20 to move upward within the sampling seat 2, thus squeezing the seawater within the sampling seat 2. At the same time, the first spring 6 is squeezed by the floating plate 7, causing the first spring 6 to compress and accumulate elastic potential energy. After sampling is completed, the sampling seat 2 is lifted, causing the floating plate 7 to move downward relative to the sampling seat 2, releasing the elastic potential energy of the first spring 6, and thus driving the floating plate 7 to move downward quickly to reset.

[0022] like Figures 1-10 As shown, the rotating part includes: A rubber ring 12 is coaxially connected to the upper end face of the rotating seat 4. When the rubber ring 12 rotates, it can synchronously drive the rotating seat 4 to rotate on the sampling seat 2. A rotating shaft 17 is horizontally connected to the sampling seat 2, and the rotating shaft 17 is located above the partition 18; A rubber wheel 3 is fixedly mounted on a rotating shaft 17. The rubber wheel 3 is connected to the upper end face of the rubber ring 12 by friction transmission. When the rubber wheel 3 rotates, it can drive the rubber ring 12 to rotate through the action of friction, so that the rubber wheel 3 and the rubber ring 12 are connected by friction transmission. A transmission unit used to drive the rotating shaft 17 to rotate when the first piston 20 moves.

[0023] In the rapid sampler for multi-point detection of seawater quality described in this invention, the first piston 20 moves up and down, and the transmission unit drives the rotating shaft 17 to rotate, thereby causing the rotating shaft 17 to drive the rubber wheel 3 to rotate. Through the friction transmission between the rubber wheel 3 and the rubber ring 12, the rubber ring 12 can be driven to rotate synchronously, which in turn drives the rotating seat 4 to rotate.

[0024] like Figures 1-10 As shown, the transmission unit includes: The second connecting rod 22 is vertically connected to the first piston 20. The upper end of the second connecting rod 22 slides out of the partition 18. The second connecting rod 22 and the first piston 20 are not coaxial. A rack portion 23 is provided at the upper end of the second connecting rod 22; A gear portion 16 is provided on the rotating shaft 17, and the gear portion 16 meshes externally with the rack portion 23; A rotation direction limiting mechanism is used to restrict the rotation direction of the rotating seat 4, that is, to make the rotating seat 4 rotate only in a single direction.

[0025] In the rapid sampler for multi-point seawater quality testing described in this invention, when the first piston 20 moves upward, it drives the second connecting rod 22 to move upward synchronously, so that the rack part 23 and the gear part 16 mesh, thereby driving the rotating shaft 17 to rotate. At this time, due to the action of the rotation direction limiting mechanism, the rubber wheel 3 and the rubber ring 12 will not generate transmission, but will only produce slippage. This ensures that when the first piston 20 squeezes the seawater in the sampling seat 2, the rubber wheel 3 and the rubber ring 12 will not rotate, that is, the sample tube 9 will not rotate on its own. When sampling is completed and the first piston 20 moves downward, it drives the second connecting rod 22 to move downward, so that the rack part 23 and the gear part 16 mesh in opposite directions and drive the rubber wheel 3 and the rubber ring 12 to drive friction transmission. This enables the first piston 20 to move downward, so that multiple sample tubes 9 can rotate alternately to the outlet 24.

[0026] like Figures 1-10 As shown, the rotation limiting mechanism includes: A locking ring 5 is fixedly fitted onto the sampling seat 2. The locking ring 5 is located below the rotating seat 4, and multiple locking grooves 25 are arrayed along its axial direction on its upper end face. The inner wall of one side of the locking groove 25 is inclined, and the inner wall of the other side is straight. The longitudinal section of the locking groove 25 is approximately a right trapezoid. Fixed sleeves 10 are vertically connected to the bottom of the rotating base 4 along the axis of the rotating base 4. The telescopic column 29 is telescopically inserted into the fixed sleeve 10. The lower end of the telescopic column 29 is rotatably fitted with a ball 30. Specifically, a spherical groove is opened in the telescopic column 29, and the ball 30 is installed in the spherical groove, so that the ball 30 is rotatably connected to the telescopic column 29. The ball 30 can roll on the upper surface of the locking ring 5 and can be inserted into the locking groove 25. An elastic abutment assembly for driving the telescopic column 29 to move downwards.

[0027] In the rapid sampler for multi-point seawater quality testing described in this invention, when the rubber ring 12 rotates, it synchronously drives the fixed sleeve 10 to move, allowing the ball bearing 30 to roll on the upper surface of the locking ring 5 and engage in the locking groove 25. When the first piston 20 moves upward, the ball bearing 30 is blocked by the straight surface in the locking groove 25, thus preventing it from rolling to the upper surface of the locking ring 5. This causes the rubber ring 12 to slip against the rubber wheel 3 and prevents it from rotating, thereby ensuring the stability of the first piston. During the process of squeezing seawater to the outlet 24, the sample tube 9 is stationary to prevent the seawater flowing out of the outlet 24 from being unable to enter the sample tube 9 for storage. Conversely, when the first piston 20 moves downward, the rubber ring 12 is subjected to the frictional transmission of the rubber wheel 3, and thus can rotate. When the rubber ring 12 rotates, the ball 30 rolls from the inclined surface of the locking groove 25 to the upper end surface of the locking ring 5 and gets stuck in another locking groove 25, thereby realizing the alternation of the sample tube 9.

[0028] like Figures 1-10 As shown, the elastic abutment component includes: A second spring is installed inside the fixed sleeve 10, and the two ends of the second spring elastically abut against the telescopic column 29 and the rotating seat 4, respectively, in the direction of the elastic force. A sliding pin 28 is provided at the upper end of the telescopic column 29. A waist-shaped hole 27 is provided on the outer wall of the fixed sleeve 10 for the sliding pin 28 to be inserted. The length direction of the waist-shaped hole 27 is parallel to the axial direction of the fixed sleeve 10.

[0029] In the rapid sampler for multi-point detection of seawater quality described in this invention, the second spring generates an elastic resisting force on the telescopic column 29, thereby causing the lower end of the telescopic column 29 to pass through the fixing sleeve 10, and causing the ball bearing 30 to alternately maintain rolling contact with the upper surface of the locking ring 5 and be engaged in the locking groove 25.

[0030] like Figures 1-10As shown, the upper end of the second connecting rod 22 is provided with a second piston 14. The second piston 14 is engaged in the sampling seat 2 and can slide freely up and down. The second piston 14 and the inner top wall of the sampling seat 2 form a rinsing chamber 15. The lower outer wall of the sampling seat 2 is provided with a rinsing port 19. The rinsing port 19 and the rinsing chamber 15 are connected by a water pipe 13. The upper outer wall of the sampling seat 2 is provided with a connecting port 31. Seawater enters the rinsing chamber 15 of the sampling seat 2 through the connecting port 31. When the first piston 20 moves upward, benthic organisms or other debris on the seabed surface may be affected by the water flow generated by the movement of the first piston 20, and then enter the sampling seat 2 through the water inlet 21, which will affect the next detection sampling. Therefore, by setting the first piston 20 to move upward, and driving the second piston 14 to move upward, the seawater in the rinsing chamber 15 is squeezed into the water pipe 13, and then enters the sampling seat 2 through the water pipe 13, forming a water flow towards the water inlet 21. This can flush out the benthic organisms or debris in the sampling seat 2.

[0031] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rapid sampler for multi-point seawater quality testing, characterized in that, include: The sampling base is hollow inside, with an outlet and an inlet at the top and bottom ends, respectively. A rotating seat is mounted on the sampling seat, and an annular groove is coaxially opened inside the rotating seat to allow the water outlet to pass freely. Multiple connecting pipes are arranged in an array along the axial direction of the rotating seat and pass through the rotating seat. One end of the connecting pipe passes into the annular groove and can contact the end face of the water outlet. A sample tube located at the other end of the connecting tube; A squeezing section is used to trigger an action when the sampling seat approaches the seabed and to squeeze the seawater inside the sampling seat to the outlet. The squeezing section includes: A first piston that is engaged within the sampling seat and can slide freely up and down; A partition is installed inside the sampling seat and located above the water outlet, forming a water storage space between the partition and the first piston; The first connecting rod is coaxially connected to the first piston and slides out of the bottom of the sampling seat; A floating plate connected to the lower end of the first connecting rod; A first spring, which is wrapped around the first connecting rod and elastically abuts against the floating plate and the sampling seat at both ends in the direction of elastic force; A rotating part for driving the rotating seat to rotate when the extrusion section is reset, the rotating part comprising: A rubber ring coaxially connected to the upper end face of the rotating seat; A rotating shaft connected to the sampling seat rotates horizontally, and the shaft is located above the partition. A rubber wheel is fixedly mounted on the rotating shaft, and the rubber wheel is connected to the upper end face of the rubber ring by friction transmission. A transmission unit for driving the shaft to rotate when the first piston moves, the transmission unit includes: A second connecting rod is vertically connected to the first piston, and the upper end of the second connecting rod slides out of the partition. A rack portion located at the upper end of the second connecting rod; A gear section is provided on the rotating shaft, and the gear section meshes externally with the rack section; A rotation direction limiting mechanism for restricting the rotation direction of a rotating seat, the rotation direction limiting mechanism comprising: A locking ring is fixedly fitted onto the sampling seat. The locking ring is located below the rotating seat, and its upper end face has multiple locking grooves arranged in an array along its axial direction. The inner wall of one side of the locking groove is inclined, and the inner wall of the other side is straight. The upper end of the second connecting rod is provided with a second piston. The second piston is engaged in the sampling seat and can slide freely up and down. The second piston and the inner top wall of the sampling seat form a rinsing chamber. The lower outer wall of the sampling seat is provided with a rinsing port. The rinsing port and the rinsing chamber are connected by a water pipe. The upper outer wall of the sampling seat is provided with a connecting port.

2. The rapid sampler for multi-point seawater quality testing according to claim 1, characterized in that, The sampling station is equipped with a hanging ring at the top.

3. The rapid sampler for multi-point seawater quality testing according to claim 1, characterized in that, The rotation limiting mechanism also includes: A fixed sleeve is vertically connected to the bottom of the rotating seat along the axial direction of the rotating seat; The telescopic column is inserted into the fixed sleeve. The lower end of the telescopic column is rotatably fitted with a ball. The ball can roll on the upper surface of the locking ring and can be engaged in the locking groove. A resilient abutment component used to drive the telescopic column to move downwards.

4. A rapid sampler for multi-point seawater quality testing according to claim 3, characterized in that, The resilient bearing components include: A second spring is installed inside the fixed sleeve, with its two ends in the direction of the spring force elastically abutting against the telescopic column and the rotating seat, respectively. The sliding pin located at the upper end of the telescopic column has a waist-shaped hole on the outer wall of the fixed sleeve for the sliding pin to be inserted.

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