A sampling device for fishery water ecotoxicological experimental analysis

Abstract

The invention relates to the technical field of analysis sampling devices, and discloses a fishery water ecotoxicology experimental analysis sampling device, comprising a sampling tube, a water inlet channel and a water storage cavity are connected on the sampling tube, a valve mechanism is arranged between the water inlet channel and the water storage cavity, the valve mechanism comprises a ball valve seat arranged in the sampling tube, a first ball valve core is rotatably arranged on the ball valve seat; a first automatic adjustment mechanism is arranged on the sampling tube, the first automatic adjustment mechanism comprises a swinging paddle arranged in the sampling tube, a blade is arranged on the swinging paddle, and the blade is located outside the sampling tube; when the sampling tube sinks into the water body, water enters the water storage cavity through the water inlet channel and the first ball valve core in sequence, and the water flow rate is monitored by the swing amplitude of the blade. The fishery water ecotoxicology experimental analysis sampling device can intelligently open and close the water storage process according to the flow rate of the water body where the sampling device is located, so as to improve the accuracy of the sampling result.

Description

Technical Field

[0001] The invention relates to the technical field of analysis sampling devices, in particular to a fishery water ecotoxicology experiment analysis sampling device. Background Art

[0002] Water ecology is an important factor in the development of fisheries. Water ecology refers to the impact of environmental water factors on organisms and the adaptation of organisms to various water conditions. Life originated in water, and water is an important component of all organisms. Organisms constantly exchange water with the environment. The quality (salinity) and quantity of water in the environment are important factors that determine the distribution of organisms, species composition and quantity, and lifestyle. When various toxic components appear in the water ecology, it will cause losses to fishery farming.

[0003] Therefore, it is necessary to conduct water ecotoxicological experimental analysis on water bodies where fishery farming and fishing are carried out. The premise of water ecotoxicological analysis is to sample the water body. Water sampling needs to follow the principle of sampling in still water or slow-flowing waters, because too fast water flow rate will cause large changes in water composition. However, existing sampling devices usually only have the function of allowing water to flow directly into the device for storage. When the water flow rate is high, the sampling results are inaccurate.

[0004] Therefore, in order to solve the above technical problems existing in the prior art, a fishery water ecotoxicology experimental analysis sampling device is proposed. Summary of the invention

[0005] The present invention provides a fishery water ecotoxicology experimental analysis sampling device, which has the beneficial effect of being able to intelligently start and close the water storage process according to the flow rate of the water body in which the sampling device is located, so as to improve the accuracy of the sampling results. It solves the problem that the existing fishery water ecotoxicology experimental analysis sampling device mentioned in the above background technology usually only has the function of allowing water to flow directly into the device for storage, and the sampling results are inaccurate when the water flow rate is high.

[0006] The present invention provides the following technical solution: a sampling device for fishery water ecotoxicological experimental analysis, comprising a sampling tube, the sampling tube is provided with a water inlet channel and a water storage chamber connected to each other, a valve mechanism is provided between the water inlet channel and the water storage chamber, the valve mechanism comprises a ball valve seat provided in the sampling tube, a first ball valve core is rotatably provided on the ball valve seat;

[0007] The sampling cylinder is provided with a first automatic adjustment mechanism, the first automatic adjustment mechanism comprises a swinging paddle arranged in the sampling cylinder, the swinging paddle is provided with a blade, and the blade is located outside the sampling cylinder;

[0008] When the sampling tube sinks into the water body, water enters the water storage chamber through the water inlet channel and the first ball valve core in sequence. At the same time, the water flow rate is monitored by the swing of the blade, and the rotation of the first ball valve core is controlled according to the swing of the blade to adjust the opening degree of the valve mechanism.

[0009] As an optional scheme of the fishery water ecotoxicology experimental analysis sampling device described in the present invention, wherein: the first ball valve core is provided with a first liquid inlet and a first liquid outlet that are connected to each other, the first liquid inlet is connected to the water inlet channel, and the first liquid outlet is connected to the water storage chamber.

[0010] As an optional solution of the fishery water ecotoxicology experimental analysis sampling device described in the present invention, the first automatic adjustment mechanism also includes a mounting seat and a spherical part, the mounting seat is arranged on the sampling tube, the spherical part is arranged on the swing paddle, and the spherical part is rotatably connected in the mounting seat.

[0011] As an optional solution of the fishery water ecotoxicological experimental analysis sampling device of the present invention, wherein: the first automatic adjustment mechanism is provided with two, and the two first automatic adjustment mechanisms are symmetrically arranged on the left and right sides of the sampling tube, and the first ball valve core is symmetrically provided with two first connecting frames;

[0012] The first automatic adjustment mechanism also includes a first transmission assembly, a second transmission assembly and a third transmission assembly, and the first connecting frame is sequentially connected to the swing paddle through the first transmission assembly, the second transmission assembly and the third transmission assembly.

[0013] As an optional solution of the fishery water ecotoxicology experimental analysis sampling device described in the present invention, the first transmission assembly includes a fixed seat arranged on the first connecting frame, a first rotating shaft is rotatably arranged on the fixed seat, and a first rotating seat is arranged on the first rotating shaft.

[0014] As an optional solution of the fishery water ecotoxicological experimental analysis sampling device described in the present invention, the third transmission component includes a slide groove opened on the swing paddle, and a slide seat is slidably arranged in the slide groove.

[0015] As an optional solution of the fishery water ecotoxicological experimental analysis sampling device of the present invention, the second transmission assembly includes a second rotating seat rotatably arranged on the first rotating seat, a second rotating shaft is rotatably arranged on the second rotating seat, and a first transmission rod is arranged on the second rotating shaft;

[0016] A third rotating seat is rotatably arranged on the sliding seat, a third rotating shaft is rotatably arranged on the third rotating seat, a second transmission rod is arranged on the third rotating shaft, and the second transmission rod is slidably connected to the first transmission rod.

[0017] As an optional scheme of the fishery water ecotoxicology experimental analysis sampling device described in the present invention, the valve mechanism also includes a second ball valve core rotatably arranged in the first ball valve core, and the second ball valve core is provided with a second liquid inlet and a second liquid outlet that are connected to each other, the second liquid inlet is connected to the first liquid inlet, and the second liquid outlet is connected to the first liquid outlet.

[0018] As an optional solution of the fishery water ecotoxicological experimental analysis sampling device of the present invention, wherein: two second automatic adjustment mechanisms are symmetrically arranged on the sampling tube, the structure of the second automatic adjustment mechanism is consistent with that of the first automatic adjustment mechanism, a second connecting frame is arranged on the second ball valve core, and the two second automatic adjustment mechanisms are connected to the second connecting frame;

[0019] The water flow rate is monitored by the two second automatic adjustment mechanisms, and the rotation of the second ball valve core is controlled according to the water flow rate.

[0020] As an optional solution of the fishery water ecotoxicological experimental analysis sampling device described in the present invention, two solenoid valves are symmetrically arranged in the water inlet channel, an air pump is arranged on the sampling tube, and the air pump is connected to the water storage chamber.

[0021] The present invention has the following beneficial effects:

[0022] 1. The sampling device for fishery water ecological toxicological experiment analysis places the sampling tube in the water body and opens the solenoid valve. Water automatically enters the water storage chamber opened in the sampling tube from the water inlet channel. After sampling, the solenoid valve can be closed to store the water in the water storage chamber. Then the sampling tube can be taken out and brought back to the laboratory for toxicological analysis experiments on fishery water ecology.

[0023] A valve mechanism is installed between the water inlet channel and the water storage chamber. The valve mechanism adjusts the opening degree of the channel between the water inlet channel and the water storage chamber by rotating the first ball valve core in the ball valve seat. A blade is installed on the outside of the sampling cylinder. When the flow rate of the water body where the sampling cylinder is located is large, it will impact the blade, causing the blade to have a large swing amplitude. When the swing amplitude of the blade is large to a certain extent, the blade will cause the first ball valve core to rotate to a certain extent in the corresponding direction through transmission, so that the water inlet channel and the water storage chamber are closed.

[0024] Thereby realizing the function of monitoring the water flow rate. When the water flow rate is too high, the channel entering the water storage chamber will be automatically closed to avoid the large flow rate affecting the large changes in water composition and reducing the accuracy of the sampling results.

[0025] 2. The sampling device for the fishery water ecotoxicology experiment analysis takes into account that the water flow in the water body is relatively complex and there may be water flow disturbances in multiple directions. Therefore, a second ball valve core is added to the first ball valve core, and the first ball valve core also acts as a ball valve, so that the water flow needs to be regulated by the first ball valve core and the second ball valve core. In addition, a circle of blades is also set on the outside of the sampling tube, which are used to monitor water flows in different directions and control the rotation of the first ball valve core or the second ball valve core to adjust the opening degree of the water inlet channel and the water storage chamber channel. Especially when there is a superposition of water flows in multiple directions, the disturbance to the water body components is greater and the channel is easier to close.

[0026] 3. The sampling device for fishery water ecotoxicological experiment analysis has an air pump installed on the sampling tube, which can extract part of the air in the water inlet channel and the water storage cavity before sampling to reduce the bubbles generated when water enters the water inlet channel and the water storage cavity, thus avoiding the disturbance of the water components by bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic cross-sectional structural diagram of the present invention as a whole.

[0029] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0030] Figure 4 for Figure 2 A partial enlarged view of point B in the middle.

[0031] Figure 5 It is a structural schematic diagram of the first automatic adjustment mechanism in the present invention.

[0032] Figure 6 It is a schematic diagram of the explosion structure of the valve mechanism in the present invention.

[0033] Figure 7 It is a schematic diagram of the first explosion structure of the first automatic adjustment mechanism in the present invention.

[0034] Figure 8 It is a schematic diagram of the second explosion structure of the first automatic adjustment mechanism in the present invention.

[0035] Fig. 9 It is a schematic diagram of the partial structure of the first automatic adjustment mechanism in the present invention.

[0036] In the figure: 100, sampling tube; 110, water inlet channel; 120, water storage chamber; 130, solenoid valve; 140, air pump; 200, valve mechanism; 210, ball valve seat; 220, first ball valve core; 230, first liquid inlet; 240, first liquid outlet; 250, first connecting frame; 260, second ball valve core; 270, second liquid inlet; 280, second liquid outlet; 290, second connecting frame; 300, first automatic adjustment mechanism; 310, swing paddle; 320, blade; 330, first transmission assembly; 331, fixed seat; 332, first rotating shaft; 333, first rotating seat; 340, second transmission assembly; 341, second rotating seat; 342, second rotating shaft; 343, first transmission rod; 344, second transmission rod; 345, third rotating seat; 346, third rotating shaft; 350, third transmission assembly; 351, slide groove; 352, slide seat; 360, mounting seat; 370, spherical part; 400, second automatic adjustment mechanism. DETAILED DESCRIPTION

[0037] 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.

[0038] For example, see Figure 1-Figure 5 A fishery water ecotoxicology experimental analysis sampling device includes a sampling tube 100, which is provided with a connected water inlet channel 110 and a water storage chamber 120, a valve mechanism 200 is arranged between the water inlet channel 110 and the water storage chamber 120, and the valve mechanism 200 includes a ball valve seat 210 arranged in the sampling tube 100, and a first ball valve core 220 is rotatably arranged on the ball valve seat 210.

[0039] The sampling cylinder 100 is provided with a first automatic adjustment mechanism 300 , which includes a swinging paddle 310 disposed in the sampling cylinder 100 . The swinging paddle 310 is provided with a blade 320 , and the blade 320 is located outside the sampling cylinder 100 .

[0040] When the sampling tube 100 sinks into the water body, water enters the water storage chamber 120 through the water inlet channel 110 and the first ball valve core 220 in turn. At the same time, the water flow rate is monitored by the swing of the blade 320, and the rotation of the first ball valve core 220 is controlled according to the swing of the blade 320 to adjust the opening degree of the valve mechanism 200.

[0041] The first ball valve core 220 is provided with a first liquid inlet 230 and a first liquid outlet 240 which are connected to each other. The first liquid inlet 230 is connected to the water inlet channel 110 , and the first liquid outlet 240 is connected to the water storage chamber 120 .

[0042] The first automatic adjustment mechanism 300 further includes a mounting seat 360 and a spherical member 370 . The mounting seat 360 is disposed on the sampling tube 100 , and the spherical member 370 is disposed on the swing paddle 310 . The spherical member 370 is rotatably connected in the mounting seat 360 .

[0043] Two solenoid valves 130 are symmetrically arranged in the water inlet channel 110 . An air pump 140 is arranged on the sampling tube 100 , and the air pump 140 is communicated with the water storage chamber 120 .

[0044] In this embodiment, the water inlet channel 110 opened at the lower side of the sampling tube 100 has two openings on the left and right, and a solenoid valve 130 is installed at the opening to control the opening of the channel. The water inlet channel 110 is connected to the water storage chamber 120 upward.

[0045] The sampling cylinder 100 can be sunk into the water body through a hanging device and a lifting device, and can reach different water depths for sampling. After sampling, the sampling cylinder 100 can be pulled to the surface of the water, and the solenoid valve 130 can be opened to take out the sampled water, and toxicological experimental analysis of water ecology can be performed in the laboratory. The sampling cylinder 100 can also be a monitoring device fixedly installed underwater. At this time, by installing a water sample analysis device in the sampling cylinder 100, the solenoid valve 130 can be remotely controlled to open, and water can be entered into the water storage chamber 120 for real-time water sample analysis. After the analysis is completed, the data is remotely transmitted to the laboratory for further research.

[0046] A ball valve seat 210 is installed between the water inlet channel 110 and the water storage chamber 120. The ball valve seat 210 has an opening that is connected to the upper and lower parts. A first ball valve core 220 is rotatably installed in the spherical groove in the ball valve seat 210. The difference between the first ball valve core 220 and the ordinary ball valve is that it can rotate based on multiple axes instead of the single-axis rotation of the ball valve. Sealing measures such as sealing rings can be added between the ball valve seat 210 and the first ball valve core 220 to ensure a good sealing effect. The lower opening of the first ball valve core 220 is the first liquid inlet 230, and the upper opening is the first liquid outlet 240. Water enters the water storage chamber 120 from the water inlet channel 110 through the lower opening of the ball valve seat 210, the first liquid inlet 230, the first liquid outlet 240, and the upper opening of the ball valve seat 210 in sequence.

[0047] When the first ball valve core 220 is maintained Figure 2 In the vertical state shown in , the first liquid inlet 230 overlaps with the lower opening of the ball valve seat 210 , and at this time, the channels of the water inlet channel 110 and the water storage chamber 120 are opened to the maximum extent.

[0048] A mounting seat 360 is mounted on the outer wall of the sampling cylinder 100, and a spherical member 370 is rotatably mounted in the mounting seat 360. The spherical member 370 has no opening, and the two ends of the swing paddle 310 mounted on the spherical member 370 are respectively located in the water storage chamber 120 and outside the sampling cylinder 100. A sealing ring or other sealing measures can also be added between the mounting seat 360 and the spherical member 370 to ensure the sealing of the sampling cylinder 100, and water can only enter the water storage chamber 120 through the water inlet channel 110 and the valve mechanism 200.

[0049] A blade 320 is installed on one end of the swinging paddle 310 located outside the sampling tube 100. The blade 320 can be set to a larger area so that it is easy to swing due to the impact of the water flow. When the flow rate of the water body in which the sampling tube 100 is located increases, the swing amplitude of the blade 320 will increase. At this time, the first ball valve core 220 is rotated through the transmission of the first automatic adjustment mechanism 300, and the rotating axis can be in various directions without affecting the adjustment effect. When the swing amplitude of the blade 320 is larger, the rotation angle of the first ball valve core 220 is larger, and at this time, the overlapping area between the first liquid inlet 230 and the lower opening of the ball valve seat 210 is smaller.

[0050] When the flow rate of the water in the sampling tube 100 increases, the speed of water entering the water storage chamber 120 is slowed down to prevent the change of water composition caused by the high flow rate of the water from affecting the accuracy of the sampling result. When the flow rate of the water reaches a certain level, the first liquid inlet 230 and the lower opening of the ball valve seat 210 are completely non-overlapping. At this time, the first liquid inlet 230 is blocked by the inner wall of the ball valve seat 210, and water cannot enter the water storage chamber 120.

[0051] Until the flow rate of the water in which the sampling tube 100 is located drops below the set threshold, the swing amplitude of the blade 320 is reduced to a certain extent, and the first ball valve core 220 is rotated back to the vertical axis direction through the transmission of the first automatic adjustment mechanism 300, reopening the channel between the water inlet channel 110 and the water storage chamber 120.

[0052] In addition, an air pump 140 is also installed on the sampling tube 100. When the two solenoid valves 130 are kept closed, the air in the water storage chamber 120 and the water inlet channel 110 can be extracted by the air pump 140 to form a negative pressure. In this way, after the sampling tube 100 is placed underwater, water will enter the water inlet channel 110 and the water storage chamber 120 faster under the action of negative pressure, thereby improving the sampling speed. At the same time, since the air in the water inlet channel 110 and the water storage chamber 120 is reduced, no bubbles will escape from the water inlet channel 110 when the water enters the water inlet channel 110 and the water storage chamber 120. Bubbles will also disturb the water body, resulting in a large change in the composition of the water body. Therefore, reducing the generation of bubbles by pumping air is also conducive to improving the accuracy of sampling.

[0053] Embodiment 2: This embodiment is an improvement on Embodiment 1. For details, please refer to Figure 1-Figure 8 There are two first automatic adjustment mechanisms 300 , and the two first automatic adjustment mechanisms 300 are symmetrically arranged on the left and right sides of the sampling tube 100 , and two first connecting frames 250 are symmetrically arranged on the first ball valve core 220 .

[0054] The first automatic adjustment mechanism 300 further includes a first transmission assembly 330 , a second transmission assembly 340 and a third transmission assembly 350 , and the first connecting frame 250 is sequentially connected to the swing paddle 310 through the first transmission assembly 330 , the second transmission assembly 340 and the third transmission assembly 350 .

[0055] The first transmission assembly 330 includes a fixing base 331 disposed on the first connecting frame 250 . A first rotating shaft 332 is rotatably disposed on the fixing base 331 . A first rotating base 333 is disposed on the first rotating shaft 332 .

[0056] The third transmission assembly 350 includes a slide groove 351 formed on the swing paddle 310 , and a slide seat 352 is slidably disposed in the slide groove 351 .

[0057] The second transmission assembly 340 includes a second rotating seat 341 rotatably disposed on the first rotating seat 333 , a second rotating shaft 342 is rotatably disposed on the second rotating seat 341 , and a first transmission rod 343 is disposed on the second rotating shaft 342 .

[0058] A third rotating seat 345 is rotatably disposed on the sliding seat 352 , a third rotating shaft 346 is rotatably disposed on the third rotating seat 345 , a second transmission rod 344 is disposed on the third rotating shaft 346 , and the second transmission rod 344 is slidably connected to the first transmission rod 343 .

[0059] In the present embodiment, considering that the underwater flow velocity is very complicated and there may be large flow velocities in multiple directions, the first automatic regulating mechanism 300 is symmetrically arranged one on each side. In this way, no matter there is a large water flow velocity on the left or right side of the sampling tube 100, or there are flow velocities in the same direction or in different directions on both sides, the transmission of the first automatic regulating mechanism 300 can be reflected to the first ball valve core 220 to cause it to rotate.

[0060] Taking the first automatic adjustment mechanism 300 on the left side as an example, the first connecting frame 250 installed on the first ball valve core 220 forms a transmission connection with the swing paddle 310. The blade 320 and the swing paddle 310 can swing with the center of the mounting seat 360 and the spherical member 370 in various directions as the axis, and the corresponding first ball valve core 220 can also rotate with the center of the first ball valve core 220 and the ball valve seat 210 in various directions as the axis. Therefore, the transmission between the swing paddle 310 and the first connecting frame 250 involves the change in the distance between the two in the left and right directions, the height change between the right end connection point of the swing paddle 310 and the upper end connection point of the first connecting frame 250, and the angle change based on the front-back axis, the left-right axis, and the up-down axis.

[0061] Specifically, the distance change in the left-right direction is achieved by the slide seat 352 sliding left-right along the slide groove 351 .

[0062] Based on the angle changes on the front-rear axis, left-right axis, and up-down axis, this is achieved by the third rotating seat 345 rotating on the slide seat 352 , the second rotating seat 341 rotating on the first rotating seat 333 , and the first rotating seat 333 rotating on the fixed seat 331 along with the first rotating shaft 332 .

[0063] The height change of the right end connection point of the swing paddle 310 and the upper end connection point of the first connecting frame 250 is achieved by a retractable connecting rod structure composed of the third rotating seat 345, the second transmission rod 344, the first transmission rod 343, the second rotating shaft 342 and the second rotating seat 341.

[0064] For example, assuming that there is a water flow flowing backward in front of the sampling cylinder 100, the water flow will impact the two blades 320, causing the blade 320 and the swing paddle 310 on the left to rotate clockwise based on the center of the mounting seat 360, and the blade 320 and the swing paddle 310 on the right to rotate counterclockwise based on the center of the mounting seat 360. Figure 3 The slide seat 352 on the left side will slide to the right along the slide slot 351. The slide seat 352 on the right side will slide to the left along the slide slot 351. At the same time, the first transmission rod 343 slides and extends relative to the second transmission rod 344, the third rotating seat 345 rotates accordingly based on the slide seat 352, the second rotating seat 341 rotates accordingly based on the first rotating seat 333, and the first rotating seat 333 rotates accordingly based on the fixed seat 331. The first ball valve core 220 and the two first connecting frames 250 rotate clockwise around the left and right axes based on the ball center of the ball valve seat 210, and finally Fig. 9 The first connecting frame 250 deflects to the rear side, the first liquid inlet 230 deflects to the front side, and the overlapping area between the first liquid inlet 230 and the lower opening of the ball valve seat 210 is reduced.

[0065] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 2. For details, please refer to Figure 1-Figure 6 The valve mechanism 200 also includes a second ball valve core 260 rotatably disposed in the first ball valve core 220, and the second ball valve core 260 is provided with a second liquid inlet 270 and a second liquid outlet 280 that are connected to each other. The second liquid inlet 270 is connected to the first liquid inlet 230, and the second liquid outlet 280 is connected to the first liquid outlet 240.

[0066] Two second automatic adjustment mechanisms 400 are symmetrically arranged on the sampling tube 100 . The structure of the second automatic adjustment mechanism 400 is consistent with that of the first automatic adjustment mechanism 300 . A second connecting frame 290 is arranged on the second ball valve core 260 . Both second automatic adjustment mechanisms 400 are connected to the second connecting frame 290 .

[0067] The water flow rate is monitored by two second automatic adjustment mechanisms 400, and the rotation of the second ball valve core 260 is controlled according to the water flow rate.

[0068] In this embodiment, considering that the underwater water flow direction is relatively complex, a structure consistent with the first automatic adjustment mechanism 300 is also installed on the front and rear sides of the sampling tube 100. The first ball valve core 220 is set to be hollow, and the second ball valve core 260 is rotatably installed in the first ball valve core 220. The first ball valve core 220 itself also plays a role similar to a valve seat. A second liquid inlet 270 is provided at the lower side of the second ball valve core 260, and a second liquid outlet 280 is provided at the upper side.

[0069] Water enters the water storage chamber 120 through the water inlet channel 110, the lower opening of the ball valve seat 210, the first liquid inlet 230, the second liquid inlet 270, the second liquid outlet 280, the first liquid outlet 240, and the upper opening of the ball valve seat 210. In addition to the fact that the water flow rate in the front-to-back direction is relatively high, which causes the first ball valve core 220 to rotate and adjust the opening degree of the valve mechanism 200, the water flow rate in the left-to-right direction is relatively high, which also controls the rotation of the second ball valve core 260 through the second automatic adjustment mechanism 400. The rotation of the second ball valve core 260 causes the overlapping area of ​​the second liquid inlet 270 and the first liquid inlet 230 to decrease, thereby achieving the effect of adjusting the opening degree of the valve mechanism 200.

[0070] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0071] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A sampling device for fishery water ecotoxicological experimental analysis, comprising a sampling tube, characterized in that: The sampling tube is provided with a water inlet channel and a water storage chamber connected to each other, a valve mechanism is provided between the water inlet channel and the water storage chamber, the valve mechanism comprises a ball valve seat provided in the sampling tube, a first ball valve core is rotatably provided on the ball valve seat; The sampling tube is provided with a first automatic adjustment mechanism, which includes a swinging paddle arranged in the sampling tube, and a blade is arranged on the swinging paddle, and the blade is located outside the sampling tube; When the sampling tube sinks into the water body, water enters the water storage chamber through the water inlet channel and the first ball valve core in sequence, and the water flow rate is monitored by the swing amplitude of the blade, and the first ball valve core is controlled to rotate according to the swing amplitude of the blade to adjust the opening degree of the valve mechanism; The first ball valve core is provided with a first liquid inlet and a first liquid outlet which are connected to each other, the first liquid inlet is connected to the water inlet channel, and the first liquid outlet is connected to the water storage chamber; The first automatic adjustment mechanism also includes a mounting seat and a spherical member, wherein the mounting seat is arranged on the sampling tube, the spherical member is arranged on the swing paddle, and the spherical member is rotatably connected in the mounting seat; Two first automatic adjustment mechanisms are provided, and the two first automatic adjustment mechanisms are symmetrically arranged on the left and right sides of the sampling tube, and two first connecting frames are symmetrically arranged on the valve core of the first ball valve; The first automatic adjustment mechanism also includes a first transmission assembly, a second transmission assembly and a third transmission assembly, and the first connecting frame is sequentially connected to the swinging propeller through the first transmission assembly, the second transmission assembly and the third transmission assembly; The first transmission assembly includes a fixed seat arranged on the first connecting frame, a first rotating shaft is rotatably arranged on the fixed seat, and a first rotating seat is arranged on the first rotating shaft; The third transmission component comprises a slide groove arranged on the swinging paddle, and a slide seat is slidably arranged in the slide groove.

2. A sampling device for fishery water ecotoxicological experimental analysis according to claim 1, characterized in that: The second transmission assembly includes a second rotating seat rotatably arranged on the first rotating seat, a second rotating shaft rotatably arranged on the second rotating seat, and a first transmission rod is arranged on the second rotating shaft; A third rotating seat is rotatably arranged on the sliding seat, a third rotating shaft is rotatably arranged on the third rotating seat, a second transmission rod is arranged on the third rotating shaft, and the second transmission rod is slidably connected to the first transmission rod.

3. A sampling device for fishery water ecotoxicological experimental analysis according to claim 1, characterized in that: The valve mechanism also includes a second ball valve core rotatably arranged in the first ball valve core, the second ball valve core is provided with a second liquid inlet and a second liquid outlet connected to each other, the second liquid inlet is connected to the first liquid inlet, and the second liquid outlet is connected to the first liquid outlet.

4. A sampling device for fishery water ecotoxicological experimental analysis according to claim 3, characterized in that: Two second automatic adjustment mechanisms are symmetrically arranged on the sampling tube, and the structure of the second automatic adjustment mechanism is consistent with that of the first automatic adjustment mechanism. A second connecting frame is arranged on the valve core of the second ball valve, and the two second automatic adjustment mechanisms are connected to the second connecting frame. The water flow rate is monitored by two second automatic regulating mechanisms, and the rotation of the valve core of the second ball valve is controlled according to the water flow rate.

5. A sampling device for fishery water ecotoxicological experimental analysis according to claim 1, characterized in that: Two electromagnetic valves are symmetrically arranged in the water inlet channel, and an air pump is arranged on the sampling tube, and the air pump is communicated with the water storage chamber.

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