Marine water quality monitoring and sampling device and method thereof

Abstract

The invention relates to the technical field of ocean water quality monitoring, and discloses an ocean water quality monitoring and sampling device and method. The sampling assemblies are arranged in the monitoring box and communicate with the opening, each sampling assembly comprises a sampling cavity, an assembling cavity and a blocking plate, the top of each sampling cavity is open, and a push block used for controlling the sampling cavity to be opened and closed is installed in the monitoring box in a sliding mode; after seawater in each sampling cavity is collected, the floating ball floats upwards to drive the blocking plate to slide so as to block the sampling cavity, the blocked floating ball is located above the blocking plate, and when the monitoring box ascends and resets subsequently, seawater flowing in through the opening impacts the floating ball but cannot enable the floating ball to descend, so that it can be ensured that the sampling cavity is fully blocked after collection is completed; and the problem that the collected seawater in the sampling cavity can be polluted by the seawater with different depths in contact with the monitoring box again in the rising and resetting process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of ocean water quality monitoring, and in particular to an ocean water quality monitoring sampling device and a method thereof. Background Art

[0002] In order to protect the living environment of marine life and maintain ecological balance, seawater testers will use marine water quality testing equipment to analyze and test the quality of marine water, so as to monitor marine pollution and take corresponding protective measures. During the monitoring, seawater sampling is required in the monitored sea area. In order to make the sampled seawater better reflect the conditions of the sea area, multiple stratified sampling is required.

[0003] At present, there are some existing technologies that can collect and sample seawater at a specified depth. For example, the patent publication number is CN116448491B. Its main technical means is to gradually push the slider to slide by gradually increasing the seawater pressure, so that the first compression spring reaches a certain compression deformation, so that the water inlet is exposed to collect seawater, and the water inlet is blocked after the float floats up. After analysis, the disadvantage of this technical solution is that: the water inlet is blocked by the buoyancy of the float. When the seawater sampling in the deepest area is completed, the monitoring box will pass through the shallow area when it rises, and the seawater in multiple shallow areas will enter the first opening in turn. The turbulent seawater will impact the float and move it, so the water inlet is very easy to open, and the sampling cavity that has collected seawater at the corresponding depth is very easy to enter seawater in other depth areas, resulting in the mixing of seawater at different depths, and the seawater cannot be accurately collected in layers. Based on this, the present invention provides a simple and ingenious structure, which can ensure that the seawater at different depths that is contacted again during the rising and resetting process of the monitoring box will not contaminate the collected seawater. Summary of the invention

[0004] The purpose of the present invention is to provide an ocean water quality monitoring sampling device and method thereof to address the deficiencies of the prior art, so as to solve the technical problem that the seawater of different depths contacted again during the rising and resetting process of the monitoring box will contaminate the collected seawater.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A marine water quality monitoring sampling device, comprising: A monitoring box connected to the monitoring ship, and the monitoring ship is provided with a driving source for driving the monitoring box to descend, and the monitoring box is provided with an opening; and A sampling assembly, several of the sampling assemblies are arranged in the monitoring box, and several of the sampling assemblies are connected to the opening, the sampling assembly includes a sampling chamber, an assembly chamber and a blocking plate, the top of the sampling chamber is open, and a push block for controlling the opening and closing of the sampling chamber is slidably installed in the monitoring box, the push block is connected to the inner wall of the monitoring box through an elastic rod, and the elastic rod is a telescopic structure, a stopper is slidably installed on the top of the assembly chamber, and when the stopper is at the highest point of its moving path, it interferes with the push block, and when the push block slides through the sampling chamber After the top is assembled, the sampling chamber is connected to the opening; the blocking plate is slidably installed in the monitoring box, and is connected to the top plate, the top plate is provided with a through hole for the floating ball to pass through, and the monitoring box is provided with a transmission assembly connected to the blocking plate. When the seawater level in the sampling chamber rises and drives the floating ball to rise and pass through the through hole, the floating ball drives the blocking plate to slide through the transmission assembly, so that the blocking plate slides into the sampling chamber to block its top, and at the same time the top plate slides into the assembly chamber, then the block and the through hole slide relative to each other and descend, and the block is misaligned with the push block.

[0006] As a further solution of the present invention: the blocking plate is arranged on one side of the top plate, and an elastic telescopic rod is arranged on the other side thereof, the elastic telescopic rod is connected to the inner wall of the assembly chamber, and the elastic telescopic rod is an elastic telescopic structure. When the blocking plate is located outside the sampling chamber, the top plate is located in the sampling chamber, and the elastic telescopic rod is in an extended state. At this time, the elastic telescopic rod supports the block, and the block is located at the highest point of its moving path.

[0007] As a further solution of the present invention: a speed regulating plate is arranged in the opening and is slidably matched with the push block.

[0008] As a further solution of the present invention: a plurality of sampling ports are arranged on the monitoring box, and the plurality of sampling ports are respectively connected to a plurality of sampling cavities, and the sampling ports are detachably connected with a cover plate.

[0009] As a further solution of the present invention: the transmission assembly comprises: The driving wheel is rotatably mounted in the blocking plate, and a hole is provided in the through hole. When the floating ball passes through the through hole, the floating ball contacts and rubs against the driving wheel in the hole to drive the driving wheel to rotate; A driven wheel is rotatably mounted in the slider, and the slider is fixed to a side of the blocking plate away from the top plate, and the driven wheel is connected to the driving wheel through a belt; A limit block is fixed on the driven wheel and is arranged through the slider. A groove is arranged on the limit block. A positioning block is fixed on the outer wall of the sampling chamber. When the float is at the lowest point of its moving path, the positioning block is misaligned with the groove. At this time, the positioning block and the limit block collide. When the float rises and rubs the driving wheel to make it rotate, the driving wheel drives the driven wheel and the limit block to rotate, and the positioning block is aligned with the groove. The elastic force of the elastic telescopic rod reset drives the blocking plate to slide into the sampling chamber, and the top plate slides into the assembly chamber at the same time; and An elastic rope, through which the limit block is connected to the outer wall of the sampling cavity.

[0010] As a further solution of the present invention: a magnet is arranged on the driving wheel, the floating ball is made of a magnetic material, and the floating ball and the magnet are magnetically attracted to each other.

[0011] As a further solution of the present invention: the sampling component also includes a filter float, which is connected to a limit assembly arranged in the monitoring box. The filter float is located above the sampling port. When the float rises and passes through the through hole, the float activates the limit assembly through the transmission assembly to allow the limit assembly to release the limit on the filter float, and the filter float floats up to intercept impurities in the sampling cavity.

[0012] As a further solution of the present invention: the cross-section of the sampling chamber is L-shaped, and it includes a high chamber and a low chamber, an assembly chamber is arranged above the low chamber, the filtering platform includes a first filter screen and a second filter screen respectively arranged in the high chamber and the low chamber, and the bottom of the first filter screen is connected to the second filter screen through a connecting rod, the connecting rod is a telescopic structure, the high chamber is located between the transmission assembly and the low chamber, and the side of the first filter screen away from the second filter screen is connected to the limit assembly.

[0013] As a further solution of the present invention: the limit assembly includes: A first magnetic block, which is fixed on the first filter screen; a limit rod, which is slidably mounted on the outer wall of the sampling cavity and on which a second magnetic block magnetically attracted to the first magnetic block is fixed, and a slide groove is provided on the limit rod; and The vertical rod is connected to the slider through an elastic part. When the float is at the lowest point of its moving path, the vertical rod is misaligned with the slide groove. At this time, the vertical rod conflicts with the limit rod. When the float rises and passes through the through hole, the slide groove slides toward the sampling cavity and drives the vertical rod to slide toward the sampling cavity. Then the vertical rod is aligned with the slide groove, and the buoyancy of seawater in the sampling cavity drives the filter float to rise.

[0014] A method for monitoring and sampling ocean water quality, the method for sampling is applied to an ocean water quality monitoring and sampling device as described above, the method for sampling comprises the following steps: Step S1: After driving the monitoring ship to the designated sea area, the driving source drives the monitoring box to descend and immerse into the sea until it reaches the upper height range of the collection area; Step S2: the seawater pressure pushes the push block gradually away from the opening until it collides with the stopper in the sampling assembly closest to the opening, at which time the sampling cavity is connected to the opening; Step S3: seawater enters the sampling chamber, and the buoyancy of the seawater in the sampling chamber drives the floating ball to gradually float upward; Step S4: When the float passes through the through hole, the float drives the blocking plate to slide into the sampling cavity through the transmission assembly to block the top of the sampling cavity, and at the same time, the top plate slides into the assembly cavity adjacent to the sampling cavity, and the block at the top of the assembly cavity slides relative to the through hole and descends, and the block is misaligned with the push block; Step S5: the monitoring box continues to descend, and the increased seawater pressure pushes the push block to slide through the assembly cavity until the push block contacts the stopper of the second sampling assembly, at which time the sampling cavity of the sampling assembly is connected to the opening; Step S6: Repeat the above steps S3 to S5 until all the sampling components have collected seawater, and then the driving source drives the monitoring box to rise and reset.

[0015] Beneficial effects of the present invention: (1) In the present invention, after the seawater in each sampling cavity is collected, the floating ball floats up and drives the blocking plate to slide to block the sampling cavity. After blocking, the floating ball is located above the blocking plate. When the monitoring box rises and resets, the seawater flowing in through the opening impacts the floating ball but cannot cause the floating ball to fall. This ensures that the sampling cavity is fully blocked after the collection is completed, avoiding the problem that the seawater of different depths that the monitoring box contacts again during the rising and resetting process will contaminate the collected seawater in the sampling cavity. (2) In the present invention, when the blocking plate slides into the sampling cavity to block it, the top plate simultaneously slides into the assembly cavity adjacent to the sampling cavity, and the block at the top of the assembly cavity slides relative to the through hole and descends, which can release the limit of the push block by the block, so that the increased seawater pressure pushes the push block to slide through the next assembly cavity, thereby realizing the stratified collection of seawater; (3) In the present invention, when the seawater collection is completed, that is, when the float rises and passes through the through hole, the float drives the sealing plate to slide into the sampling cavity for sealing through the transmission component. At the same time, the transmission component starts the limit component to release the limit on the filter float. Then, the filter float can float up to intercept impurities in the sampling cavity, ensuring that the seawater extracted from the sampling port is free of impurities. Subsequently, the staff can extract the filtered seawater through the sampling port below for testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the monitoring box in the present invention; Figure 3 It is a schematic diagram of the structure of the sampling assembly in the present invention; Figure 4 It is a structural schematic diagram of the top plate in the present invention; Figure 5 It is a structural schematic diagram of the transmission assembly in the present invention; Figure 6 The present invention Figure 4 A local enlarged structural schematic diagram; Figure 7 It is a structural schematic diagram of the filtering floating platform in the present invention; Figure 8 It is a structural schematic diagram of the limiting component in the present invention.

[0018] In the figure: 1. monitoring box; 2. sampling port; 3. opening; 4. speed regulating plate; 5. push block; 6. elastic rod; 7. sampling chamber; 8. assembly chamber; 9. stopper; 10. blocking plate; 11. transmission assembly; 1101. driving wheel; 1102. driven wheel; 1103. belt; 1104. limit block; 1105. groove; 1106. positioning block; 1107. elastic rope; 1108. slider; 1109. magnet; 12. top plate; 13. elastic telescopic rod; 14. float; 15. filter floating platform; 1501. first filter screen; 1502. second filter screen; 1503. connecting rod; 16. limit assembly; 1601. first magnetic block; 1602. second magnetic block; 1603. limit rod; 1604. slideway; 1605. vertical rod; 1606. elastic member. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 7 As shown, the present invention is a marine water quality monitoring sampling device, comprising: A monitoring box 1 connected to a monitoring ship, and a driving source for driving the monitoring box 1 to descend is provided on the monitoring ship, and an opening 3 is provided on the monitoring box 1; and Sampling components, several of the sampling components are arranged in the monitoring box 1, and several of the sampling components are connected to the opening 3. The sampling components include a sampling chamber 7, an assembly chamber 8 and a blocking plate 10. The top of the sampling chamber 7 is open, and a push block 5 for controlling the opening and closing of the sampling chamber 7 is slidably installed in the monitoring box 1. The push block 5 is connected to the inner wall of the monitoring box 1 through an elastic rod 6, and the elastic rod 6 is a telescopic structure. A stopper 9 is slidably installed on the top of the assembly chamber 8, and when the stopper 9 is at the highest point of its moving path, it interferes with the push block 5. When the push block 5 slides over the top of the sampling chamber 7, the sampling The cavity 7 is communicated with the opening 3; the blocking plate 10 is slidably installed in the monitoring box 1, and is connected to the top plate 12. The top plate 12 is provided with a through hole for the float 14 to pass through. The monitoring box 1 is provided with a transmission assembly 11 connected to the blocking plate 10. When the seawater level in the sampling cavity 7 rises, driving the float 14 to rise and pass through the through hole, the float 14 drives the blocking plate 10 to slide through the transmission assembly 11, so that the blocking plate 10 slides into the sampling cavity 7 to block its top, and at the same time the top plate 12 slides into the assembly cavity 8, then the block 9 slides relative to the through hole and descends, and the block 9 is misaligned with the push block 5.

[0021] It should be noted that Figure 3 Taking the direction shown as an example, the opening 3 is located on the left side of several sampling components, and the sealing plate 10 of the leftmost sampling component is initially located in the monitoring box 1. Similarly, the sealing plates 10 of other sampling components are initially located in the assembly cavity 8 of the left sampling component.

[0022] In one case of this embodiment, the driving source includes a motor, a drum, a rope and other structures, which are used to drive the monitoring box 1 to rise and fall. This is the prior art and the present application has not improved it. Therefore, there is no need to disclose its specific mechanical structure and circuit structure, and it does not affect the integrity of the present application; the telescopic structure is a structure formed by nesting multiple stages of pipe fittings. In actual application, a gear rack and electric telescopic rod structure can also be used. This embodiment does not make specific limitations here.

[0023] In actual application of this embodiment, in the initial state, the sampling chamber 7 is separated from the opening 3 by the push block 5, and the sampling chamber 7 is not connected to the opening 3. At this time, there is no seawater in the sampling chamber 7, the float 14 is located at the lowest point of its moving path, and the block 9 is located at the highest point of its moving path. At this time, the blocking plate 10 is located outside the sampling chamber 7, and the top plate 12 is located inside the sampling chamber 7; after driving the monitoring ship to the designated sea area, the driving source drives the monitoring box 1 to descend and immerse in the sea until the upper layer height of the collection area When the sampling chamber 7 is connected to the opening 3, the seawater pressure pushes the push block 5 to gradually move away from the opening 3 until the push block 5 contacts the stopper 9 in the sampling assembly closest to the opening 3. At this time, the sampling chamber 7 is connected to the opening 3, and the seawater enters the sampling chamber 7. The buoyancy of the seawater in the sampling chamber 7 drives the floating ball 14 to gradually float up. When the floating ball 14 passes through the through hole, the floating ball 14 drives the blocking plate 10 to slide into the sampling chamber 7 through the transmission assembly 11 to block the top of the sampling chamber 7. At the same time, the top plate 12 slides into the adjacent sampling chamber 7. When the monitoring box 1 is lowered, the seawater inflowing through the opening 3 impacts the float 14 but cannot cause the float 14 to drop, thus ensuring that the sampling chamber 7 is fully blocked after the collection is completed, thereby avoiding the problem that the seawater at different depths that is contacted again during the rising and resetting process of the monitoring box 1 will contaminate the seawater collected in the sampling chamber 7.

[0024] like Figure 2-Figure 7 As shown, as a preferred embodiment of the present invention, the blocking plate 10 is arranged on one side of the top plate 12, and an elastic telescopic rod 13 is arranged on the other side thereof, the elastic telescopic rod 13 is connected to the inner wall of the assembly cavity 8, and the elastic telescopic rod 13 is an elastic telescopic structure. When the blocking plate 10 is located outside the sampling cavity 7, the top plate 12 is located in the sampling cavity 7, and the elastic telescopic rod 13 is in an extended state. At this time, the elastic telescopic rod 13 supports the block 9, and the block 9 is located at the highest point of its moving path.

[0025] In one case of this embodiment, the elastic telescopic structure is a structure formed by nesting multiple stages of pipes with built-in springs. In actual application, a gear rack and an electric telescopic rod structure may also be adopted, which is not specifically limited in this embodiment.

[0026] In actual application of this embodiment, in the initial state, the elastic telescopic rod 13 is in an extended state. At this time, the elastic telescopic rod 13 supports the stopper 9. The stopper 9 is located at the highest point of its moving path, and can contact the push block 5 to limit it, thereby preventing the collected seawater from entering the sampling components corresponding to other depth layers.

[0027] like Figure 1-Figure 3 As shown, as a preferred embodiment of the present invention, a speed regulating plate 4 is provided in the opening 3 and is slidably matched with the push block 5. In actual application, by setting the speed regulating plate 4 with different friction coefficients, the thrust required for the push block 5 to slide to the sampling cavity 7 in the sampling assembly closest to the opening 3 can be adjusted. By measuring the thrust generated by the seawater pressure, it can be ensured that when the monitoring box 1 descends to the upper height range of the collection area, the push block 5 slides over the top of the sampling cavity 7 to connect the sampling cavity 7 with the opening 3.

[0028] like Figure 1-Figure 2 As shown, as a preferred embodiment of the present invention, the monitoring box 1 is provided with a plurality of sampling ports 2, and the plurality of sampling ports 2 are respectively connected to a plurality of sampling cavities 7, and the sampling ports 2 are detachably connected with a cover plate.

[0029] In one case of this embodiment, the sampling port 2 is connected to the sampling cavity 7 through a connecting tube, and the sampling port 2 and the cover plate can be assembled by snap-fit ​​or bolted, which is not specifically limited here.

[0030] like Figure 2-Figure 8 As shown, as a preferred embodiment of the present invention, the transmission assembly 11 includes: The driving wheel 1101 is rotatably mounted in the blocking plate 10, and a hole is provided in the through hole. When the floating ball 14 passes through the through hole, the floating ball 14 contacts and rubs with the driving wheel 1101 in the hole to drive the driving wheel 1101 to rotate; A driven wheel 1102 is rotatably mounted in a slider 1108, and the slider 1108 is fixed to a side of the blocking plate 10 away from the top plate 12, and the driven wheel 1102 is connected to the driving wheel 1101 through a belt 1103; The limit block 1104 is fixed on the driven wheel 1102 and is arranged through the slider 1108. The limit block 1104 is provided with a groove 1105. The outer wall of the sampling chamber 7 is fixed with a positioning block 1106. When the float 14 is located at the lowest point of its moving path, the positioning block 1106 is misaligned with the groove 1105. At this time, the positioning block 1106 conflicts with the limit block 1104. When the float 14 rises and rubs the driving wheel 1101 to make it rotate, the driving wheel 1101 drives the driven wheel 1102 and the limit block 1104 to rotate, and the positioning block 1106 is aligned with the groove 1105. The elastic force of the elastic telescopic rod 13 resetting drives the blocking plate 10 to slide into the sampling chamber 7, and the top plate 12 slides into the assembly chamber 8; and The elastic rope 1107 is used to connect the limit block 1104 to the outer wall of the sampling cavity 7.

[0031] It should be noted that a cavity is provided on the slider 1108 for accommodating the rotation of the limit block 1104; the driving wheel 1101 and the driven wheel 1102 described in the present application are both provided with a block of the limit belt 1103, which can avoid the problem that the belt 1103 is separated from the driving wheel 1101 and the driven wheel 1102 after the slider 1108 slides, that is, the distance between the driving wheel 1101 and the driven wheel 1102 is reduced, and the time for the floating ball 14 to rise and contact and rub with the driving wheel 1101 in the hole is short, so the driving wheel 1101 and the driven wheel 1102 can be kept away from each other. The time for the synchronous rotation of the driving wheel 1102 and the limit block 1104 is relatively short. After the rotation occurs, the positioning block 1106 is aligned with the groove 1105, and the slider 1108 slides. During this process, the float 14 has been lifted off the driving wheel 1101, and the groove 1105 is aligned and engaged with the limit block 1104. Then, the driving wheel 1101, the driven wheel 1102 and the limit block 1104 will not rotate, and the driven wheel 1102 and the limit block 1104 will only translate toward the direction of the sampling chamber 7, and the distance between the driving wheel 1101 and the driven wheel 1102 is reduced.

[0032] In actual application of this embodiment, in the initial state, when the float 14 is located at the lowest point of its moving path, the positioning block 1106 is misaligned with the groove 1105, and at this time the positioning block 1106 conflicts with the limiting block 1104; after the seawater enters the sampling cavity 7, the buoyancy of the seawater drives the float 14 to rise and pass through the through hole. When the float 14 passes through the hole, the float 14 contacts and rubs against the driving wheel 1101 in the hole to drive the driving wheel 1101 to rotate, and the driven wheel 1102 can be driven to rotate through the belt 1103, and the limiting block 1104 rotates. Since the contact time between the float 14 and the hole is short, the rotation angle of the driving wheel 1101 is small. Figure 5Taking the direction shown as an example, in the initial state, the bottom of the positioning block 1106 is lower than the bottom of the groove 1105, and the float 14 floats up to drive the driving wheel 1101 to rotate counterclockwise, then the belt 1103 drives the driven wheel 1102 to rotate counterclockwise synchronously, driving the limit block 1104 to flip backward, and the horizontal height of the groove 1105 drops and can be aligned with the positioning block 1106. The elastic force of the elastic telescopic rod 13 resets and drives the sealing plate 10 to slide into the sampling chamber 7, thereby sealing the sampling chamber 7, and the float 14 is intercepted by the sealing plate 10 above it, and the top plate 12 slides into the assembly chamber 8. During this process, the slider 1108 moves in the direction close to the sampling chamber 7, and the positioning block 1106 and the groove 1105 slide relative to each other. During the process of seawater entering the sampling cavity 7, before the float 14 rises and passes through the through hole, the elastic rope 1107 remains taut, which can effectively prevent the seawater from scouring the driving wheel 1101 and causing the limit block 1104 to rotate, thereby avoiding the problem of premature blockage caused by seawater scouring.

[0033] like Figure 5 As shown, as a preferred embodiment of the present invention, a magnet 1109 is provided on the driving wheel 1101 , the float 14 is made of magnetic material, and the float 14 and the magnet 1109 are magnetically attracted to each other.

[0034] In one case of the present embodiment, the float 14 can be made of magnetic materials such as ferrite magnetic materials, stainless steel magnetic materials, etc., which will not be elaborated here; it should be noted that the magnetic attraction between the magnet 1109 and the float 14 is less than the weight of the float 14, and the rising seawater level in the sampling chamber 7 causes the buoyancy of the float 14 to be greater than the sum of the magnetic attraction and the weight of the float 14, and the float 14 will rise.

[0035] In actual application of this embodiment, in the initial state, when the float 14 is located at the lowest point of its moving path, the magnetic attraction is insufficient to make the float 14 rise, and the magnet 1109 is located on the lower half circle of the driving wheel 1101; when the float 14 rises and passes through the through hole, the float 14 floats up and cooperates with the magnetic attraction to drive the magnet 1109 to rise, then the driving wheel 1101 rotates upward, thereby rotating counterclockwise, and then drives the driven wheel 1102 to rotate so that the positioning block 1106 and the groove 1105 can be aligned, so that the blocking plate 10 can slide into the sampling cavity 7 for blocking.

[0036] like Figure 3-Figure 8 As shown, as a preferred embodiment of the present invention, the sampling assembly also includes a filter float 15, and the filter float 15 is connected to a limit assembly 16 arranged in the monitoring box 1. The filter float 15 is located above the sampling port 2. When the float 14 rises and passes through the through hole, the float 14 starts the limit assembly 16 through the transmission assembly 11, so that the limit assembly 16 releases the limit on the filter float 15, and the filter float 15 floats up to intercept impurities in the sampling cavity 7.

[0037] The floating ball 14 is located above the filtering floating platform 15 .

[0038] In actual application of this embodiment, in the initial state, the limiting component 16 limits the filtering float 15. When the seawater collection is completed, that is, when the float 14 rises and passes through the through hole, the float 14 drives the sealing plate 10 to slide into the sampling cavity 7 for sealing through the transmission component 11. At the same time, the transmission component 11 starts the limiting component 16 to release the limiting of the filtering float 15. The filtering float 15 can float up to intercept impurities in the sampling cavity 7. Then the staff can extract the filtered seawater through the sampling port 2 below for detection.

[0039] like Figure 2-Figure 8 As shown, as a preferred embodiment of the present invention, the cross-section of the sampling chamber 7 is L-shaped, and it includes a high chamber and a low chamber, an assembly chamber 8 is arranged above the low chamber, the filtering float 15 includes a first filter screen 1501 and a second filter screen 1502 which are respectively arranged in the high chamber and the low chamber, and the bottom of the first filter screen 1501 is connected to the second filter screen 1502 by a connecting rod 1503, and the connecting rod 1503 is a telescopic structure, the high chamber is located between the transmission assembly 11 and the low chamber, and the first filter screen 1501 is connected to the limiting assembly 16 on the side away from the second filter screen 1502.

[0040] In one case of this embodiment, the limiting component 16 includes: A first magnetic block 1601, which is fixed on the first filter screen 1501; A limiting rod 1603 is slidably mounted on the outer wall of the sampling chamber 7, and a second magnetic block 1602 that is magnetically attracted to the first magnetic block 1601 is fixed thereon, and a sliding groove 1604 is provided on the limiting rod 1603; and The vertical rod 1605 is connected to the slider 1108 through the elastic member 1606. When the float 14 is located at the lowest point of its moving path, the vertical rod 1605 is misaligned with the slide groove 1604. At this time, the vertical rod 1605 conflicts with the limit rod 1603. When the float 14 rises and passes through the through hole, the slider 1108 slides toward the sampling chamber 7 and drives the vertical rod 1605 to slide toward the sampling chamber 7. Then, the vertical rod 1605 is aligned with the slide groove 1604, and the buoyancy of the seawater in the sampling chamber 7 drives the filtration float 15 to rise.

[0041] The elastic force of the elastic telescopic rod 13 is greater than the elastic force of the elastic member 1606 , and the elastic force of the elastic member 1606 is greater than the friction force between the bottom of the vertical rod 1605 and the limiting rod 1603 .

[0042] The telescopic structure is a structure formed by nesting multiple stages of pipe fittings. In actual application, a gear rack or electric telescopic rod structure may also be adopted, which is not specifically limited in this embodiment. The elastic member 1606 may be a spring, or may be replaced by other elastic components, such as a silicone column, a spring sheet, etc., which is not specifically limited in this embodiment.

[0043] When this embodiment is actually used, in the initial state, the float 14 is located at the lowest point of its moving path, and the vertical rod 1605 is misaligned with the slide groove 1604. At this time, the vertical rod 1605 conflicts with the limiting rod 1603, and the filter float 15 cannot float up; when the float 14 rises and passes through the through hole, the slider 1108 slides toward the sampling chamber 7 and drives the vertical rod 1605 to slide toward the sampling chamber 7, then the vertical rod 1605 is aligned with the slide groove 1604, and the limiting rod 1603 no longer conflicts with the vertical rod 1605. Under the action of buoyancy, the filter float 15 floats up, and during this process, relative sliding occurs between the vertical rod 1605 and the slide groove 1604, and the filter float 15 can filter the impurities in the sampling chamber 7 to ensure that the seawater extracted from the sampling port 2 is free of impurities. And the second filter 1502 reaches the highest point of its moving path first. At this time, the first filter 1501 has not reached the highest point of its moving path. If the impurities in the high cavity have not been squeezed out by the first filter 1501 and the first filter 1501 still has room to rise, the first filter 1501 continues to rise in the high cavity under the action of buoyancy. During this process, the connecting rod 1503 extends until the first filter 1501 moves to the highest point of its moving path or completely squeezes out the impurities in the high cavity, thereby achieving sufficient filtration of each area of ​​the sampling cavity 7.

[0044] See also Figure 1-Figure 8 As shown, the present invention is a method for monitoring and sampling ocean water quality. The sampling method is applied to an ocean water quality monitoring and sampling device as described in the above embodiment. The sampling method comprises the following steps: Step S1: After driving the monitoring ship to the designated sea area, the driving source drives the monitoring box 1 to descend and immerse into the sea until it reaches the upper height range of the collection area; Step S2: The seawater pressure pushes the push block 5 to gradually move away from the opening 3 until it collides with the stopper 9 in the sampling assembly closest to the opening 3. At this time, the sampling cavity 7 is connected to the opening 3; Step S3: seawater enters the sampling chamber 7, and the buoyancy of the seawater in the sampling chamber 7 drives the float 14 to gradually float upward; Step S4: When the float 14 passes through the through hole, the float 14 drives the blocking plate 10 to slide into the sampling chamber 7 through the transmission assembly 11 to block the top of the sampling chamber 7, and at the same time, the top plate 12 slides into the assembly chamber 8 adjacent to the sampling chamber 7, and the stopper 9 at the top of the assembly chamber 8 slides relative to the through hole and descends, and the stopper 9 is misaligned with the push block 5; Step S5: the monitoring box 1 continues to descend, and the increased seawater pressure pushes the push block 5 to slide through the assembly cavity 8 until the push block 5 contacts the stopper 9 of the second sampling assembly, at which time the sampling cavity 7 of the sampling assembly is connected to the opening 3; Step S6: Repeat the above steps S3 to S5 until all the sampling components have collected seawater, and then the driving source drives the monitoring box 1 to rise and reset.

[0045] Working principle of the present invention: The above embodiment of the present invention provides a marine water quality monitoring sampling device and method thereof. After the monitoring ship is driven to the designated sea area, the driving source drives the monitoring box 1 to descend and immerse into the sea until it reaches the upper height range of the collection area. The seawater pressure pushes the push block 5 to gradually move away from the opening 3 until the push block 5 collides with the stopper 9 in the sampling assembly closest to the opening 3. At this time, the sampling chamber 7 is connected to the opening 3, and seawater enters the sampling chamber 7. The buoyancy of the seawater in the sampling chamber 7 drives the float 14 to gradually float up. When the float 14 passes through the through hole, the float 14 drives the sealing plate 10 to slide into the sampling chamber 7 through the transmission assembly 11 to block the top of the sampling chamber 7. At the same time, the top plate 12 slides into the assembly chamber 8 adjacent to the sampling chamber 7. The stopper 9 at the top of the assembly chamber 8 slides relative to the through hole and descends. The stopper 9 and the pusher The push block 5 is misplaced, and then the monitoring box 1 continues to descend. The increased seawater pressure pushes the push block 5 to slide through the above-mentioned assembly cavity 8 until the push block 5 conflicts with the stop block 9 of the second sampling component. At this time, the sampling cavity 7 of the sampling component is connected with the opening 3, and seawater is collected in the sampling cavity 7. In this reciprocating manner, the stratified collection of seawater in the designated area is realized. After the seawater in each sampling cavity 7 is collected, the float 14 floats up and drives the sealing plate 10 to slide to seal the sampling cavity 7. After sealing, the float 14 is located above the sealing plate 10. When the monitoring box 1 rises and resets subsequently, the seawater pouring in through the opening 3 impacts the float 14 but cannot make the float 14 fall, so that it can ensure that the sampling cavity 7 is fully blocked after the collection is completed, avoiding the problem that the seawater of different depths that is contacted again during the rising and resetting process of the monitoring box 1 will contaminate the collected seawater in the sampling cavity 7.

[0046] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A marine water quality monitoring sampling device, characterized in that: include: A monitoring box (1) connected to a monitoring ship, wherein a driving source for driving the monitoring box (1) to descend is provided on the monitoring ship, and an opening (3) is provided on the monitoring box (1); and A sampling assembly, wherein a plurality of the sampling assemblies are arranged in the monitoring box (1), and the plurality of the sampling assemblies are connected to the opening (3), the sampling assembly comprising a sampling chamber (7), an assembly chamber (8) and a blocking plate (10), the sampling chamber (7) being arranged with an open top, and a push block (5) for controlling the opening and closing of the sampling chamber (7) being slidably mounted in the monitoring box (1), the push block (5) being connected to the inner wall of the monitoring box (1) via an elastic rod (6), and the elastic rod (6) being a telescopic structure, a stop block (9) being slidably mounted on the top of the assembly chamber (8), and when the stop block (9) is located at the highest point of its moving path, it interferes with the push block (5), and when the push block (5) slides over the top of the sampling chamber (7), the sampling chamber (7) is closed. ) is connected to the opening (3); the blocking plate (10) is slidably mounted in the monitoring box (1) and is connected to the top plate (12); the top plate (12) is provided with a through hole for the floating ball (14) to pass through; the monitoring box (1) is provided with a transmission assembly (11) connected to the blocking plate (10); when the seawater level in the sampling chamber (7) rises, driving the floating ball (14) to rise and pass through the through hole, the floating ball (14) drives the blocking plate (10) to slide through the transmission assembly (11), so that the blocking plate (10) slides into the sampling chamber (7) to block the top thereof, and at the same time the top plate (12) slides into the assembly chamber (8), the stopper (9) slides relative to the through hole and descends, and the stopper (9) is misaligned with the push block (5).

2. The marine water quality monitoring sampling device according to claim 1, characterized in that: The blocking plate (10) is arranged on one side of the top plate (12), and an elastic telescopic rod (13) is arranged on the other side thereof. The elastic telescopic rod (13) is connected to the inner wall of the assembly chamber (8), and the elastic telescopic rod (13) is an elastic telescopic structure. When the blocking plate (10) is located outside the sampling chamber (7), the top plate (12) is located inside the sampling chamber (7), and the elastic telescopic rod (13) is in an extended state. At this time, the elastic telescopic rod (13) supports the stopper (9), and the stopper (9) is located at the highest point of its moving path.

3. The marine water quality monitoring sampling device according to claim 1, characterized in that: A speed regulating plate (4) is arranged in the opening (3) and is slidably matched with the push block (5).

4. The marine water quality monitoring sampling device according to claim 1, characterized in that: The monitoring box (1) is provided with a plurality of sampling ports (2), and the plurality of sampling ports (2) are respectively connected to a plurality of sampling cavities (7), and the sampling ports (2) are detachably connected with a cover plate.

5. The marine water quality monitoring sampling device according to claim 4, characterized in that: The transmission assembly (11) comprises: A driving wheel (1101) is rotatably mounted in the blocking plate (10), and a hole is provided in the through hole. When the floating ball (14) passes through the through hole, the floating ball (14) contacts and rubs against the driving wheel (1101) in the hole, thereby driving the driving wheel (1101) to rotate; A driven wheel (1102) is rotatably mounted in a slider (1108), and the slider (1108) is fixed to a side of the blocking plate (10) away from the top plate (12), and the driven wheel (1102) is connected to the driving wheel (1101) via a belt (1103); A limit block (1104) is fixed on the driven wheel (1102) and is arranged through the slider (1108). The limit block (1104) is provided with a groove (1105). A positioning block (1106) is fixed on the outer wall of the sampling chamber (7). When the floating ball (14) is located at the lowest point of its moving path, the positioning block (1106) and the groove (1105) are misaligned. At this time, the positioning block (1106) and the limit block ( 1104), when the floating ball (14) rises and rubs the driving wheel (1101) to make it rotate, the driving wheel (1101) drives the driven wheel (1102) and the limit block (1104) to rotate, so that the positioning block (1106) is aligned with the groove (1105), and the elastic force of the elastic telescopic rod (13) to reset drives the blocking plate (10) to slide into the sampling chamber (7), and at the same time, the top plate (12) slides into the assembly chamber (8); and An elastic rope (1107), through which the limit block (1104) is connected to the outer wall of the sampling cavity (7).

6. The marine water quality monitoring sampling device according to claim 5, characterized in that: The driving wheel (1101) is provided with a magnet (1109), the floating ball (14) is made of a magnetic material, and the floating ball (14) and the magnet (1109) are magnetically attracted to each other.

7. The marine water quality monitoring sampling device according to claim 5, characterized in that: The sampling assembly further comprises a filter float (15), the filter float (15) being connected to a limit assembly (16) arranged in the monitoring box (1), the filter float (15) being located above the sampling port (2), and when the float (14) rises and passes through the through hole, the float (14) activates the limit assembly (16) via the transmission assembly (11), so that the limit assembly (16) releases the limit on the filter float (15), and the filter float (15) floats up to intercept impurities in the sampling cavity (7).

8. The marine water quality monitoring sampling device according to claim 7, characterized in that: The sampling chamber (7) has an L-shaped cross-section and comprises a high chamber and a low chamber, an assembly chamber (8) is arranged above the low chamber, the filtering platform (15) comprises a first filter screen (1501) and a second filter screen (1502) respectively arranged in the high chamber and the low chamber, and the bottom of the first filter screen (1501) is connected to the second filter screen (1502) via a connecting rod (1503), and the connecting rod (1503) is a telescopic structure. The high chamber is located between the transmission assembly (11) and the low chamber, and the side of the first filter screen (1501) away from the second filter screen (1502) is connected to the limit assembly (16).

9. The marine water quality monitoring sampling device according to claim 8, characterized in that: The limiting component (16) comprises: A first magnetic block (1601) fixed on the first filter screen (1501); a limiting rod (1603) which is slidably mounted on the outer wall of the sampling chamber (7) and on which is fixed a second magnetic block (1602) magnetically attracted to the first magnetic block (1601); the limiting rod (1603) is provided with a sliding groove (1604); and The vertical rod (1605) is connected to the slide block (1108) via an elastic member (1606). When the float (14) is located at the lowest point of its moving path, the vertical rod (1605) is misaligned with the slide groove (1604). At this time, the vertical rod (1605) is in conflict with the limit rod (1603). When the float (14) rises and passes through the through hole, the slide block (1108) slides toward the sampling chamber (7) and drives the vertical rod (1605) to slide toward the sampling chamber (7). Then, the vertical rod (1605) is aligned with the slide groove (1604), and the buoyancy of the seawater in the sampling chamber (7) drives the filtering floating platform (15) to rise.

10. A method for sampling marine water quality monitoring, characterized in that: The sampling method is applied to a marine water quality monitoring sampling device as described in claims 1-9, and the sampling method comprises the following steps: Step S1: After the monitoring ship is driven to the designated sea area, the driving source drives the monitoring box (1) to descend and immerse into the sea until it reaches the upper height range of the collection area; Step S2: the seawater pressure pushes the push block (5) gradually away from the opening (3) until it contacts the stopper (9) in the sampling assembly closest to the opening (3), at which point the sampling cavity (7) is connected to the opening (3); Step S3: seawater enters the sampling chamber (7), and the buoyancy of the seawater in the sampling chamber (7) drives the floating ball (14) to gradually float upward; Step S4: When the float (14) passes through the through hole, the float (14) drives the blocking plate (10) to slide into the sampling chamber (7) through the transmission assembly (11) to block the top of the sampling chamber (7), and at the same time, the top plate (12) slides into the assembly chamber (8) adjacent to the sampling chamber (7), and the stopper (9) at the top of the assembly chamber (8) slides relative to the through hole and descends, and the stopper (9) is misaligned with the push block (5); Step S5: the monitoring box (1) continues to descend, and the increased seawater pressure pushes the push block (5) to slide through the assembly cavity (8) until the push block (5) contacts the stopper (9) of the second sampling assembly, at which time the sampling cavity (7) of the sampling assembly is connected to the opening (3); Step S6: Repeat the above steps S3 to S5 until all the sampling components have collected seawater, and then the driving source drives the monitoring box (1) to rise and reset.

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