Water quality monitoring device and system for sea area with Chinese white dolphin population

Abstract

The invention provides a water quality monitoring device and system for a sea area with Chinese dolphin populations, and relates to the technical field of water quality monitoring, the water quality monitoring device comprises a sampling tank and a balancing weight, the sampling tank is internally provided with a sample cavity for containing samples, one side of the sampling tank is provided with a sample inlet communicated with the sample cavity, and the other side of the sampling tank is provided with a water outlet communicated with the balancing weight; and a door plate capable of blocking the sample inlet is mounted in the sample cavity. According to the water quality monitoring device and system for the sea area with the Chinese white dolphin population, through the arrangement of the sampling tanks, the balancing weight, the door plate, the pressure driving structure, the circular ring and the connecting rope, a plurality of independent sampling tanks can be sequentially connected together through the connecting rope according to actual needs; the water sampling device is simple in structure and convenient to use, the water sampling device is sunk into the sea water to complete sampling by using the balancing weight, the sea water sampling can be completed by only sinking the corresponding sampling tank into the sea water with the corresponding depth, the operation is simple and convenient, the volume is small, the storage and the carrying are convenient, and the sampling operation can be quickly performed on the deep sea water and each position in the sea water.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring, and in particular to a water quality monitoring device and system for sea areas with Chinese white dolphin populations. Background Art

[0002] The Chinese white dolphin is a marine mammal belonging to the Delphinidae family and the genus Dolphin. It has a stout body, a medium-length beak, a thickened ridge at the base of the dorsal fin, and a large, nearly triangular dorsal fin. The flippers and tail are wide and have rounded tips. The maximum body length of the specimen is about 2.6 meters. The front end of the lower jaw slightly exceeds the upper jaw. There is no deep indentation between the beak and the melanopsoma as a boundary. The base of the dorsal fin forms a thickened ridge; the caudal peduncle has developed dorsal and ventral ridges; it is dark gray in juveniles and becomes lighter with age. The subadults are a mixture of gray and pink. The adults are pure white, often showing pink due to congestion; some adults have dark spots on their bodies, and a few individuals have a ring formed by dark spots on the neck behind the blowhole. They like to live in the subtropical sea area where estuaries and freshwater meet. They live in shallow waters and rocky places. They will gather in the sea near the beach for rest or play.

[0003] In order to protect the Chinese white dolphin, it is necessary to analyze the composition of the sea water and evaluate the treatment plan, study and analyze the treatment technology and methods of the sea water, and promote environmental protection and the continuation of the Chinese white dolphin. It is necessary to sample, test and treat the sea water. When analyzing the composition of the sea water and evaluating the treatment method, most of them are done by manually using sampling tools to perform multi-point sampling in the sea water. However, many sampling tools are currently single-point sampling, which is slow. There are also a small number of sampling tools that are multi-point sampling at the same time, but this type of sampling tool first sinks the sampling tool into the sea water and reaches a certain depth when sampling, and then opens the sampling port of the sampling chamber by electric or manual mechanical transmission. The electric one will make the whole sampling tool heavier, inconvenient to operate, and there is also a risk of electric shock, especially in highly ionized sea water. When the manual mechanical transmission method is used to open the sampling port of the sampling chamber, due to the long transmission distance, it will cause energy loss, reliability, transmission efficiency, and easy to fail, and the maintenance cost is relatively high. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a water quality monitoring device and system for sea areas with Chinese white dolphin populations.

[0005] The present invention proposes a water quality monitoring device for a sea area with a Chinese white dolphin population, comprising a sampling tank and a counterweight. A sample cavity for containing samples is provided in the sampling tank, a sampling port connected to the sample cavity is provided on one side of the sampling tank, a door plate capable of blocking the sampling port is installed in the sample cavity, a pressure driving structure is installed on the sampling tank, and the pressure driving structure is used to drive the door plate to block the sampling port. When the sampling tank is submerged in water, water pressure can drive the door plate to open the sampling port. A plurality of circular rings are fixedly mounted on the outer circumference of the sampling tank, and a connecting rope is detachably connected between the circular rings on two adjacent sampling tanks, and the counterweight block is detachably hoisted on the lowest sampling tank.

[0006] Preferably, the pressure drive structure comprises a No. 1 piston block, a No. 2 piston block, a connecting rod, an elastic component and a fixed rotation component; a movable groove adapted to the No. 1 piston block is provided at the bottom of the sampling tank, the No. 1 piston block is slidably installed in the movable groove, a driving groove adapted to the No. 2 piston block is provided on the bottom inner wall of the sample chamber, the No. 2 piston block is slidably installed in the driving groove, and both ends of the connecting rod are fixedly connected to the No. 1 piston block and the No. 2 piston block respectively; The elastic component is used to drive the No. 1 piston block to slide and reset in the movable groove; The fixed rotation assembly is used to fix the position of the door plate when it blocks the injection port.

[0007] Preferably, a communication channel is provided between the movable groove and the driving groove, the connecting rod is located in the communication channel, and the diameter of the connecting rod is smaller than the inner diameter of the communication channel.

[0008] Preferably, the fixed-rotation assembly includes a sliding rod and a stop block, the door panel is fixedly connected with a rotating shaft, the door panel is rotatably installed in the sample chamber via the rotating shaft, one end of the rotating shaft passes through the bottom inner wall of the sample chamber and extends into the movable groove and is fixedly connected to the sliding rod, the sliding rod and the rotating shaft are arranged vertically, the bottom end of the stop block is fixedly connected to the No. 1 piston block, the sliding rod abuts against one side of the stop block, and the sliding rod and the side of the stop block are slidably matched, and a bevel groove is provided on the side of the stop block close to the sliding rod.

[0009] Preferably, the elastic component includes a straight spring; the straight spring is sleeved on the connecting rod, and the two ends of the straight spring are respectively against the inner wall of the end of the No. 1 piston block and the movable groove; A pressure regulating structure is installed on the sampling tank, and the pressure regulating structure is used to adjust the compression degree of the straight spring.

[0010] Preferably, the pressure regulating structure includes a conical ring plate and an adjusting component; the end of the movable groove is provided with a moving groove adapted to the conical ring plate, the two ends of the straight spring respectively abut against the No. 1 piston block and the conical ring plate, and the adjusting component can adjust the distance between the conical ring plate and the No. 1 piston block.

[0011] Preferably, the adjusting assembly includes a movable part, an end face gear plate, a driving gear and an adjusting rod. The number of the movable parts is multiple, and the multiple movable parts are arranged in a ring array. The inner wall of the motion groove is provided with a telescopic hole that slides with the movable part. The movable part slides with the inclined surface of the conical ring plate away from the straight spring. The end face gear plate is rotatably installed in the sampling tank. The side of the end face gear plate away from the tooth teeth is provided with a right-angle thread. The movable part is provided with a thread groove that matches the right-angle thread. When the end face gear plate rotates, the right-angle thread can slide in the thread groove on the movable part. The driving gear is rotatably installed in the sampling tank, and the driving gear is meshed with the end face gear plate. One end of the adjusting rod is fixedly connected to the driving gear, and the other end of the adjusting rod passes through the sampling tank and extends to the outside of the sampling tank.

[0012] Preferably, the elastic component includes a constant torque spring and a force rod; an installation groove is opened in the sampling tank, the inner ring end of the constant torque spring is fixedly installed in the installation groove, the outer ring end of the constant torque spring is fixedly connected to the force rod, and one end of the force rod rests on piston block No. 1.

[0013] Preferably, a cavity is provided inside the end of the sampling tank away from the No. 1 piston block.

[0014] Preferably, one side of the sampling tank is engraved with angle marks, and the angle marks are located on the outer circumference of the adjustment rod.

[0015] The device and system for monitoring the water quality of sea areas with Chinese white dolphin populations proposed by the present invention have the following beneficial effects: through the provision of sampling tanks, counterweights, door panels, pressure-driven structures, rings and connecting ropes, multiple independent sampling tanks can be connected together in sequence through connecting ropes according to actual needs, and the counterweights can be used to sink the tanks into the sea water to complete sampling. During the sampling process, no manual operation is required by the staff, and the sampling of the sea water can be completed by sinking the corresponding sampling tanks into the sea water of the corresponding depth. The operation is simple and convenient, the size is small, and it is convenient to store and carry, and sampling operations can be quickly performed on deeper sea water and various positions in the sea water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a water quality monitoring device and system for sea areas with Chinese white dolphin populations proposed by the present invention; Figure 2A side cross-sectional view of a sampling tank in Embodiment 1 of a water quality monitoring device and system for sea areas with Chinese white dolphin populations proposed by the present invention; Figure 3 A schematic diagram of the structure of a water quality monitoring device for sea areas with Chinese white dolphin populations and a No. 1 piston block, a No. 2 piston block, a connecting rod, a sliding rod and a shifting block in the system proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a door panel, a sliding rod and a rotating shaft in a water quality monitoring device for sea areas with Chinese white dolphin populations and a system proposed by the present invention; Figure 5 The present invention proposes a water quality monitoring device and system for sea areas with Chinese white dolphin populations Figure 2 Enlarged view of point A in the middle; Figure 6 This is a bottom view of the coordination of the movable parts and the end gear plate in the water quality monitoring device for the Chinese white dolphin population and the system proposed by the present invention; Figure 7 A top view of a water quality monitoring device for sea areas with Chinese white dolphin populations and an end face gear plate in the system proposed by the present invention; Figure 8 It is a side sectional view of a sampling tank in Embodiment 2 of a water quality monitoring device and system for sea areas with Chinese white dolphin populations proposed by the present invention.

[0017] In the figure: 1. sampling tank; 2. sample cavity; 3. injection port; 4. door panel; 5. ring; 6. connecting rope; 7. counterweight; 8. piston block No. 1; 9. piston block No. 2; 10. connecting rod; 11. sliding rod; 12. shift block; 13. rotating shaft; 14. straight spring; 15. conical ring plate; 16. movable part; 17. end gear plate; 18. driving gear; 19. adjusting rod; 20. right-angle thread; 21. constant torque spring; 22. force rod; 23. cavity. DETAILED DESCRIPTION

[0018] Example 1: Reference Figure 1-Figure 7The present invention proposes a water quality monitoring device and system for sea areas with Chinese white dolphin populations, including a sampling tank 1 and a counterweight 7. A sample chamber 2 for containing samples is provided in the sampling tank 1. When sampling, sea water is stored in the sample chamber 2. A sampling port 3 connected to the sample chamber 2 is provided on one side of the sampling tank 1. A door panel 4 capable of blocking the sampling port 3 is installed in the sample chamber 2. A pressure driving structure is installed on the sampling tank 1. The pressure driving structure is used to drive the door panel 4 to block the sampling port 3. When the sampling tank 1 sinks into the water, the water pressure can drive the door panel 4 to open the sampling port 3. In actual use, assuming that it is necessary to sample sea water at a depth of 1 meter, the sampling tank 1 is sunk into the sea water at a depth of 1 meter. When the sampling tank 1 sinks into and reaches the sea water at a depth of 1 meter, the hydraulic pressure at this time drives the pressure driving structure. Due to the structural effect, the pressure-driven structure does not apply a fixed force to the door panel 4. Similarly, under the action of hydraulic pressure, the door panel 4 opens the sample inlet 3, and the sea water flows from the sample inlet 3 to the sample chamber 2. When the sample chamber 2 is filled with sea water at a depth of 1 meter, the pressure inside and outside the sample chamber 2 is in a balanced state, and the force exerted by the hydraulic pressure on the pressure-driven structure can be ignored. The pressure-driven structure drives the door panel 4 to seal the sample inlet 3, so that the sea water in the sample chamber 2 does not flow out. It should be noted that the door panel 4 can only be opened by hydraulic pressure when the sampling tank 1 sinks to a certain depth in the sea water. Moreover, the device can easily sample sea water even at a depth of tens of meters, and only requires a connecting rope 6 of a corresponding length, without the need for other auxiliary tools, and the operation is equally simple.

[0019] Eight rings 5 ​​are fixedly installed on the periphery of the sampling tank 1. The eight rings 5 ​​are divided into two groups. The four rings 5 ​​in one group are respectively located on the four sides of the sampling tank 1. The two groups are respectively close to the two ends of the sampling tank 1. A connecting rope 6 is detachably connected between the rings 5 ​​on two adjacent sampling tanks 1. Safety buckles are installed at both ends of the connecting rope 6. The safety buckles are connected to the rings 5. In actual operation, it is assumed that sampling is required at different depths at the same point. The sampling depths are 2 meters, 1.5 meters, 1 meter, and 0.5 meters. Four depths can be selected. A 0.5-meter-long connecting rope 6 is used to connect the four sampling tanks 1 in sequence through the connecting rope 6. At this time, when the four sampling tanks 1 are hoisted, the distance between two adjacent sampling tanks 1 is 0.5 meters. The counterweight 7 is detachably hoisted on the lowest sampling tank 1. When sampling, a hanging rod can be used, and a 0.5-meter connecting rope 6 and the hanging rod are connected together. The other end of the connecting rope 6 is connected to the ring 5 on the sampling tank 1, and then the connecting rope 6 is used to connect the remaining three sampling tanks 1 in sequence, and then the bottom of the lowest sampling tank 1 is connected. The first party uses the connecting rope 6 to hang a counterweight 7, lifts the lifting rod, lifts the four sampling tanks 1 and the counterweight 7 to above the liquid surface of the sea water, gradually sinks the counterweight 7 and the four sampling tanks 1 into the sea water, until the position where the lifting rod is connected to the connecting rope 6 contacts the liquid surface of the sea water, leaves it for a few minutes, and then lifts the four sampling tanks 1, so as to complete the sampling of sea water at different depths at the same point. Moreover, the device can be freely matched according to actual needs, and can also be conveniently sampled at any position of the sea water, such as sea The midpoint of the water in the sea area does not need to be equipped with a separate platform such as a bracket, and only a hanging rod is needed. The structure is simple and the operation is convenient. At the same time, the sampling tank 1 is small in size and easy to store, and does not take up too much space. However, it should be noted that when sampling water in sea areas of different depths, the use of the sampling tank 1 is also different. The pressure-driven structure in the sampling tank 1 is subjected to different pressures. For example, the water pressure at a depth of 2 meters is twice that at a depth of 1 meter. When the sampling tank 1 used at a depth of 2 meters reaches a depth of 1 meter, the door panel 4 cannot be opened.

[0020] The design of the ring 5 and the connecting rope 6 on the periphery of the device facilitates the connection of multiple sampling devices into a network to achieve large-scale, multi-point synchronous monitoring. This group deployment method can cover areas with intensive activities of Chinese white dolphins (such as the Pearl River Estuary and Guangdong coastal waters), providing continuous and comprehensive data for environmental pollution warning and habitat change monitoring.

[0021] like Figure 2 and Figure 3As shown, the pressure drive structure includes a No. 1 piston block 8, a No. 2 piston block 9, a connecting rod 10, an elastic component and a fixed rotation component;The fixed rotation assembly is used to fix the position of the door panel 4 when it blocks the sample inlet 3. The fixed rotation assembly includes a slide bar 11 and a stop block 12. A rotating shaft 13 is fixedly connected to the door panel 4. The door panel 4 is rotatably installed in the sample chamber 2 through the rotating shaft 13. One end of the rotating shaft 13 passes through the bottom inner wall of the sample chamber 2 and extends into the movable groove and is fixedly connected to the slide bar 11. The slide bar 11 and the rotating shaft 13 are arranged vertically. The bottom end of the stop block 12 is fixedly connected to the No. 1 piston block 8. The slide bar 11 abuts against one side of the stop block 12, and the slide bar 11 and the side of the stop block 12 are slidably matched. The stop block 12 is provided with an inclined groove on the side close to the slide bar 11. The bottom of the sampling tank 1 is provided with a movable groove adapted to the No. 1 piston block 8, and the No. 1 piston block 8 is slidably installed in the movable groove The No. 1 piston block 8 can only move in the movable groove, and the No. 1 piston block 8 cannot rotate in the movable groove. A driving groove adapted to the No. 2 piston block 9 is provided on the bottom inner wall of the sample chamber 2. The No. 2 piston block 9 is slidably installed in the driving groove. The No. 2 piston block 9 can only move in the driving groove. The two ends of the connecting rod 10 are respectively fixedly connected to the No. 1 piston block 8 and the No. 2 piston block 9. After the sampling tank 1 sinks into the sea water, the No. 1 piston block 8 will slide in the movable groove under the action of water pressure. The sliding No. 1 piston block 8 drives the connecting rod 10 and the No. 2 piston block 9 to slide synchronously. The sliding No. 1 piston block 8 drives the stop block 12 to rise. During the rising process of the stop block 12, the stop block 12 slides on the sliding rod 11. At this time, the stop block 12 and the sliding rod 11 are in contact with each other. The contact position of the rod 11 is the vertical surface of one side of the stop block 12, until the water pressure on the No. 1 piston block 8 reaches a certain level (that is, when it reaches the specified depth), the stop block 12 rises with the No. 1 piston block 8, and the slide bar 11 reaches the inclined groove on the side of the stop block 12. Since the sample chamber 2 is in an empty state, under the action of the external water pressure, the door panel 4 is driven to rotate. When the door panel 4 rotates, the rotating shaft 13 is driven to rotate synchronously. When the rotating shaft 13 rotates, the slide bar 11 is driven to rotate synchronously. The rotating slide bar 11 and the inclined surface of the inclined groove on the side of the stop block 12 slide together, so that the slide bar 11 has a rotating position, so that the door panel 4 can rotate and open the sample inlet 3, and the external sea water enters the sample chamber 2 through the sample inlet 3. When the sea water enters the sample chamber 2, the pressure outside the sample chamber 2 and the sampling tank 1 gradually decreases. When the sea water fills the sample chamber 2, the water pressure on the No. 1 piston block 8 can be ignored. Under the action of the elastic component, the No. 1 piston block 8 is driven to slide and reset, and the sliding No. 1 piston block 8 drives the stop block 12 to reset synchronously. The slide bar 11 and the stop block 12 slide in the opposite direction until the stop block 12 limits the rotation position of the slide bar 11, so that the door panel 4 cannot rotate and the sampling port 3 is blocked. The sea water in the sample chamber 2 cannot come out, and the sea water outside cannot enter. It can ensure that the sample chamber 2 after the sample is collected is in a relatively closed and independent space, so that the sea water sample in the sample chamber 2 is not polluted by the outside world. ;

[0022] like Figure 2 As shown, a connecting channel is provided between the movable groove and the driving groove, the connecting rod 10 is located in the connecting channel, and the diameter of the connecting rod 10 is smaller than the inner diameter of the connecting channel. It should be noted that in specific operation, when the water pressure exerts a force on the No. 1 piston block 8, it is necessary to compress the air in the movable groove, and at the same time, it is necessary to compress the air in the sample chamber 2. When the connecting channel connects the movable groove and the driving groove, the movable groove, the driving groove and the connecting channel form an independent space. When the No. 1 piston block 8 and the No. 2 piston block 9 slide, it is only necessary to compress the cavity in the sample chamber 2. In order to reduce interference factors in the calculation of the elastic force of the elastic component and improve the calculation of the sampling tank 1 being able to complete the sampling when it sinks to the corresponding depth, the cross-sectional area of ​​the No. 1 piston block 8 and the cross-sectional area of ​​the No. 2 piston block 9 can be designed to be of the same size. When the No. 1 piston block 8 and the No. 2 piston block 9 slide synchronously, the air in the movable groove and the driving groove can be replaced with equal volumes. Because the sliding displacements of the No. 1 piston block 8 and the No. 2 piston block 9 are the same, when the cross-sectional areas are different, the air in the independent space may be compressed or expanded, thereby reducing interference with the calculation of the elastic force of the elastic component.

[0023] like Figure 2 As shown, the elastic component is used to drive the No. 1 piston block 8 to slide and reset in the movable groove; the elastic component includes a straight spring 14; the straight spring 14 is sleeved on the connecting rod 10, and the two ends of the straight spring 14 are respectively against the No. 1 piston block 8 and the inner wall of the end of the movable groove. A pressure regulating structure is installed on the sampling tank 1, and the pressure regulating structure is used to adjust the compression degree of the straight spring 14. The characteristic of the straight spring 14 is that the greater the amplitude of its compression, the greater the rebound force of the straight spring 14. In the process of the sampling tank 1 sinking into the sea water, as the depth increases, the water pressure also increases , the sliding displacement of piston block No. 1 8 also becomes larger, thereby increasing the degree of squeezing of straight spring 14. During this process, the stop block 12 slides synchronously with the sliding of piston block No. 1 8 and slides on the slide rod 11 until the water pressure reaches a certain level, and the position of the inclined groove on the stop block 12 reaches the position of the slide rod 11. The door panel 4 rotates open under the action of water pressure, and the slide rod 11 is not blocked by the stop block 12. The inclined sliding surface of the inclined groove on the slide rod 11 and the stop block 12 is matched. It needs to be ensured that the slide rod 11 always rests on the stop block 12.

[0024] like Figure 2As shown, during use, the staff found that when sampling sea water at different depths, it is necessary to use straight springs 14 of different specifications, that is, it is necessary to replace new sampling tanks 1 for use. In this way, when sampling at different depths, a large number of sampling tanks 1 need to be prepared. However, due to the characteristics of the straight spring 14, when the compression degree of the straight spring 14 changes, the force when the straight spring 14 is further compressed needs to change. Therefore, the staff improved it and designed a method that can adjust the compression degree of the straight spring 14, so that a sampling tank 1 can sample sea water at different depths after adjusting the compression degree of the straight spring 14. In this way, there is no need to prepare a large number of sampling tanks 1, and each sampling tank 1 can be ensured to be used within a certain range of the depth, reducing the investment of funds. The sampling can be flexibly adjusted according to the water quality and water depth conditions of different sea areas to ensure that the collected water sample data has high accuracy, which is particularly critical for the dynamically changing coastal water quality environment, and these environmental factors directly affect the foraging resources and habitat stability of the Chinese white dolphin.

[0025] like Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the pressure regulating structure includes a conical ring plate 15 and an adjusting component; the conical ring plate 15 is an annular plate structure, one side of the conical ring plate 15 is a plane, and the other side is a conical surface, such as Figure 2 and Figure 5As shown in , the end of the movable groove is provided with a motion groove adapted to the conical ring plate 15, and the two ends of the straight spring 14 are respectively against the No. 1 piston block 8 and the conical ring plate 15. The adjustment component can adjust the distance between the conical ring plate 15 and the No. 1 piston block 8. The adjustment component includes a movable part 16, an end gear plate 17, a driving gear 18 and an adjustment rod 19. The working principle of the adjustment component is similar to the chuck principle on a lathe. There are multiple movable parts 16, and the multiple movable parts 16 are arranged in a ring array. The motion groove The inner wall is provided with a telescopic hole that slides with the movable part 16, and the movable part 16 slides with the inclined surface of the conical ring plate 15 away from the straight spring 14. The end face gear plate 17 is rotatably installed in the sampling tank 1. The side of the end face gear plate 17 away from the teeth is provided with a right-angle thread 20. The movable part 16 is provided with a thread groove that matches the right-angle thread 20. When the end face gear plate 17 rotates, the right-angle thread 20 can slide in the thread groove on the movable part 16, and the driving gear 18 is rotatably installed in the sampling tank 1. The driving gear 18 is driven to rotate and install in the sampling tank 1. The gear 18 is meshed with the end face gear plate 17, one end of the adjusting rod 19 is fixedly connected to the driving gear 18, and the other end of the adjusting rod 19 passes through the sampling tank 1 and extends to the outside of the sampling tank 1. One side of the sampling tank 1 is engraved with angle scales, and the angle scales are located on the outer periphery of the adjusting rod 19. During operation, by rotating the adjusting rod 19, the angle scales are passed through to determine the rotation angle and number of turns of the adjusting rod 19, and the driving gear 18 is driven by the adjusting rod 19 to rotate. Since the driving gear 18 is meshed with the end face gear plate 17, The driving gear 18 drives the end face gear plate 17 to rotate, and the end face gear plate 17 drives the right-angle thread 20 to rotate when rotating. Since the movable part 16 cooperates with the right-angle thread 20, the four movable parts 16 are driven to move closer to each other or away from each other, so that the inclined surface on the movable part 16 and the conical surface of the end face gear plate 17 slide and cooperate, driving the conical ring plate 15 to move in the motion groove, thereby changing the compression degree of the straight spring 14. After use, the adjustment rod 19 needs to be rotated and reset each time.

[0026] Example 2: Figure 8As shown, the difference between this embodiment and embodiment 1 lies in the difference in the elastic component. The elastic component includes a fixed torque spring 21 and a force rod 22. An installation groove is opened in the sampling tank 1, and the inner ring end of the fixed torque spring 21 is fixedly installed in the installation groove. The outer ring end of the fixed torque spring 21 is fixedly connected to the force rod 22, and one end of the force rod 22 is against the No. 1 piston block 8. Due to the characteristics of the fixed torque spring 21, the pulling force generated by the fixed torque spring 21 on the force rod 22 is constant, that is, when the fixed torque spring 21 pulls the force rod 22, the force of the end of the force rod 22 against the No. 1 piston block 8 is always constant. Four fixed torque springs 21 and four force rods 22 can be used at the same time to ensure that the force on the No. 1 piston block 8 is uniform. Due to the characteristics of the fixed torque spring 21, its depth control when sinking into the water in the sea area can be more accurate.

[0027] A cavity 23 is provided inside the end of the sampling tank 1 away from the No. 1 piston block 8, which can reduce the weight of the top of the sampling tank 1 and enable the sampling tank 1 to remain in a vertical state in the sea water.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water quality monitoring device for sea areas with Chinese white dolphin populations, characterized in that: The invention comprises a sampling tank (1) and a counterweight (7), wherein a sample cavity (2) for containing a sample is provided in the sampling tank (1), a sample inlet (3) communicating with the sample cavity (2) is provided on one side of the sampling tank (1), a door plate (4) capable of blocking the sample inlet (3) is installed in the sample cavity (2), a pressure driving structure is installed on the sampling tank (1), and the pressure driving structure is used to drive the door plate (4) to block the sample inlet (3), and when the sampling tank (1) is sunk into water, the water pressure can drive the door plate (4) to open the sample inlet (3); A plurality of circular rings (5) are fixedly mounted on the outer circumference of the sampling tank (1); a connecting rope (6) is detachably connected between the circular rings (5) on two adjacent sampling tanks (1); and the counterweight (7) is detachably hoisted on the lowest sampling tank (1).

2. The water quality monitoring device for sea areas with Chinese white dolphin populations according to claim 1 is characterized in that: The pressure drive structure comprises a No. 1 piston block (8), a No. 2 piston block (9), a connecting rod (10), an elastic component and a fixed rotation component; a movable groove matching the No. 1 piston block (8) is provided at the bottom of the sampling tank (1), the No. 1 piston block (8) is slidably mounted in the movable groove, a driving groove matching the No. 2 piston block (9) is provided on the bottom inner wall of the sample chamber (2), the No. 2 piston block (9) is slidably mounted in the driving groove, and two ends of the connecting rod (10) are fixedly connected to the No. 1 piston block (8) and the No. 2 piston block (9) respectively; The elastic component is used to drive the first piston block (8) to slide and reset in the movable groove; The fixed rotation assembly is used to fix the position of the door plate (4) when it blocks the injection port (3).

3. The water quality monitoring device for the sea area with Chinese white dolphin population according to claim 2 is characterized in that: A communication channel is provided between the movable groove and the driving groove, the connecting rod (10) is located in the communication channel, and the diameter of the connecting rod (10) is smaller than the inner diameter of the communication channel.

4. The water quality monitoring device for sea areas with Chinese white dolphin populations according to claim 1 is characterized in that: The fixed-rotation assembly comprises a slide bar (11) and a stop block (12); a rotating shaft (13) is fixedly connected to the door panel (4); the door panel (4) is rotatably mounted in the sample chamber (2) via the rotating shaft (13); one end of the rotating shaft (13) penetrates the bottom inner wall of the sample chamber (2) and extends into the movable groove to be fixedly connected to the slide bar (11); the slide bar (11) and the rotating shaft (13) are arranged vertically; the bottom end of the stop block (12) is fixedly connected to a No. 1 piston block (8); the slide bar (11) abuts against one side of the stop block (12); the slide bar (11) and the side of the stop block (12) are slidably matched; a bevel groove is provided on the side of the stop block (12) close to the slide bar (11).

5. The water quality monitoring device for the sea area with Chinese white dolphin population according to claim 3 is characterized in that: The elastic component comprises a straight spring (14); the straight spring (14) is sleeved on the connecting rod (10), and the two ends of the straight spring (14) respectively abut against the first piston block (8) and the inner wall of the end of the movable groove; A pressure regulating structure is installed on the sampling tank (1), and the pressure regulating structure is used to adjust the degree of compression of the straight spring (14).

6. The water quality monitoring device for the sea area with Chinese white dolphin population according to claim 5 is characterized in that: The pressure regulating structure comprises a conical ring plate (15) and an adjusting component; a moving groove adapted to the conical ring plate (15) is provided at the end of the movable groove; two ends of the straight spring (14) respectively abut against the first piston block (8) and the conical ring plate (15); and the adjusting component can adjust the distance between the conical ring plate (15) and the first piston block (8).

7. The water quality monitoring device for the sea area with Chinese white dolphin population according to claim 6 is characterized in that: The adjustment assembly comprises a movable part (16), an end face gear plate (17), a driving gear (18) and an adjustment rod (19); the movable parts (16) are in plurality and arranged in a ring array; the inner wall of the motion groove is provided with a telescopic hole for slidingly cooperating with the movable part (16); the movable part (16) is slidably cooperating with the inclined surface of the conical ring plate (15) away from the straight spring (14); the end face gear plate (17) is rotatably mounted in the sampling tank (1); a right-angle thread (20) is provided on the side of the end face gear plate (17) away from the teeth; and the movable part (16) is provided with a threaded hole (20) for slidingly cooperating with the movable part (16). A thread groove matched with the right-angle thread (20) is provided. When the end face gear plate (17) rotates, the right-angle thread (20) can slide in the thread groove on the movable part (16). The driving gear (18) is rotatably mounted in the sampling tank (1). The driving gear (18) is meshed with the end face gear plate (17). One end of the adjusting rod (19) is fixedly connected to the driving gear (18). The other end of the adjusting rod (19) passes through the sampling tank (1) and extends to the outside of the sampling tank (1). One side of the sampling tank (1) is engraved with an angle mark, and the angle mark is located on the outer periphery of the adjusting rod (19).

8. The water quality monitoring device for sea areas with Chinese white dolphin populations according to claim 3 is characterized in that: The elastic component comprises a constant torque spring (21) and a force application rod (22); a mounting groove is provided in the sampling tank (1), an inner ring end of the constant torque spring (21) is fixedly mounted in the mounting groove, an outer ring end of the constant torque spring (21) is fixedly connected to the force application rod (22), and one end of the force application rod (22) abuts against the No. 1 piston block (8).

9. The water quality monitoring device for sea areas with Chinese white dolphin populations according to claim 2 is characterized in that: A cavity (23) is formed inside the sampling tank (1) at one end away from the first piston block (8).

10. A water quality monitoring system for sea areas with Chinese white dolphin populations, used for a water quality monitoring device for sea areas with Chinese white dolphin populations as claimed in any one of claims 1 to 9, characterized in that: A water quality monitoring system for sea areas with Chinese white dolphin populations is designed to control the water quality monitoring device for sea areas with Chinese white dolphin populations.

Images