A portable detection device for lake water quality detection

Abstract

The present invention discloses a portable detection device for lake water quality detection, including a water quality detector, a box and a waterproof shell. The box is provided with a first side buoyancy chamber, a second side buoyancy chamber and a central chamber. The central chamber is provided with two lifting drive mechanisms distributed up and down and a rotating drive mechanism. The lifting drive mechanism includes a bidirectional screw, a nut seat, a light rod, an elastic member, a pressure sensor, a slider, a wheel axle and a driving wheel. The rotating drive mechanism drives the wheel axle to rotate. The detector body can be detachably installed in the waterproof shell, and a pull rope is installed on the top of the waterproof shell. By providing a small-volume pull rope and a buoyant box, it is easy to carry. The box and the water quality detector can be moved to offshore waters in a parabolic or drifting manner. By driving the probe to dive and rise, water quality detection of different water depths in offshore waters can be achieved, thereby improving the accuracy and reliability of lake water quality detection. By rolling the probe into the box and then pulling the box back, the safety of the probe can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of water quality detection, in particular to a portable detection device for lake water quality detection. Background Art

[0002] Lake water quality testing is a key link in ensuring the safety of drinking water. As the main source of drinking water for residents in many areas, the water quality of lakes is directly related to the health of residents. Through water quality testing, harmful substances can be detected and prevented from entering the water supply system in a timely manner to ensure the safety of drinking water. Lake water quality testing also helps to maintain ecological balance. Through water quality testing, the impact of pollution on aquatic organisms can be assessed, and timely measures can be taken to protect biodiversity and maintain the health of lake ecosystems. Lake water quality testing is also an important means to deal with the impact of human activities on water resources. Water quality testing can timely understand the types and sources of pollutants, provide data support for environmental protection departments, formulate targeted governance measures, and reduce the negative impact of human activities on lake water quality.

[0003] Lake water quality testing generally uses handheld portable water quality testers to test lake water, but existing water quality testers can only be manually held and the probe is submerged into the shore waters for water quality testing. The shore water quality may be affected by factors such as human activities, soil erosion, and vegetation coverage, resulting in insufficient accuracy and low reliability of water quality testing. Water quality may be affected by factors such as the overall water cycle of the lake, aquatic biological activities, and the release of lake bottom sediments. Water quality testing in waters far from the shore can better reflect the water quality inside the lake, which can improve the accuracy and reliability of water quality testing.

[0004] However, existing water quality detectors are not convenient for moving the probe to waters far from the shore, and it is necessary to take a boat to test the water quality far from the shore, which makes the test inconvenient. In addition, the water quality of a lake may vary due to factors such as geographical location, water flow, water depth, lake bottom sediments, etc. Testing at different water depths can obtain more accurate water quality data. Existing water quality detectors are limited by the length of their own cables, and it is not convenient to dive the probe to the bottom of the lake. If the water quality at the bottom of the lake is to be tested, the length of the cable needs to be increased. However, due to the thick diameter of the cable, the overall size of the detection device will increase, making it inconvenient to carry. Summary of the invention

[0005] Based on this, it is necessary to provide a portable detection device for lake water quality detection to address the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a portable detection device for lake water quality detection, including a water quality detector, the water quality detector including a detector body, a cable and a probe, the detector body is connected to the probe through the cable, and also includes a box and a waterproof shell, the box is provided with a first side buoyancy cavity, a second side buoyancy cavity and a central cavity, the central cavity is located between the first side buoyancy cavity and the second side buoyancy cavity, the upper and lower ends of the box are provided with openings connected to the central cavity and through which the water quality detector can pass, and two lifting drive mechanisms distributed up and down are provided in the central cavity; the lifting drive mechanism includes a bidirectional screw rod, a nut seat, a light rod, an elastic member, a pressure sensor, a slider, a wheel axle and a driving wheel The bidirectional screw is rotatably installed in the box, and nut seats are threadedly installed on the two threaded sections of the bidirectional screw with opposite rotation directions. The light rod is fixedly installed in the box, and the nut seat is slidably connected to the light rod. A slider corresponding to the nut seat is slidably installed on the light rod, and a pressure sensor is installed on the slider. An elastic member is installed between the pressure sensor and the nut seat. A wheel axle is rotatably installed on the slider, and a driving wheel is fixedly installed on the wheel axle. The two driving wheels synchronously approach or move away from the opening center; a rotating drive mechanism is provided in the central cavity, and the rotating drive mechanism drives the wheel axle to rotate; the detector body can be detachably installed in a waterproof shell, and the cable passes through the bottom of the waterproof shell. A pull rope is installed on the top of the waterproof shell, and the pull rope diameter is smaller than the cable diameter.

[0007] Optionally, the upper and lower parts of the waterproof shell are both conical, the middle part of the waterproof shell is cylindrical, the upper part of the waterproof shell is provided with a first internal threaded hole, one end of the pull rope is installed with an external threaded column, and the external threaded column is threadedly connected to the first internal threaded hole.

[0008] Optionally, the waterproof shell is formed by sealingly splicing a first half shell and a second half shell, a plurality of first mounting seats are provided on the inner wall of the first half shell, the first mounting seats are provided with second internal threaded holes, a second mounting seat corresponding to the first mounting seats one by one is provided on the inner wall of the second half shell, the second mounting seat is provided with a mounting hole passing through the second half shell, the first mounting seat and the second mounting seat are connected by a countersunk screw threadedly connected to the second internal threaded hole, and a waterproof plug for closing the mounting hole is installed on the second half shell.

[0009] Optionally, the lifting drive mechanism also includes a first drive motor, which is fixedly installed in the first side buoyancy chamber, and a first bevel gear is installed on the output shaft of the first drive motor. One end of the bidirectional screw rod is sealed and extends into the first side buoyancy chamber and is installed with a second bevel gear. The first bevel gear is meshingly connected with the second bevel gear.

[0010] Optionally, the rotation drive mechanism includes a second driving motor, a first synchronous shaft, a first synchronous pulley, a first synchronous transmission belt, a second synchronous shaft, a second synchronous pulley, a second synchronous transmission belt, a first gear shaft, a second gear shaft, a first driven gear, a second driven gear and a driving gear; the first synchronous shaft is provided with four and is distributed in a rectangular shape in the central cavity, the first synchronous shaft is rotatably connected to the box body, and the first synchronous pulley is fixedly installed on the first synchronous shaft; the second synchronous shaft is provided with four and is distributed in a rectangular shape in the central cavity, the second synchronous shaft is rotatably connected to the box body, and the second synchronous pulley is fixedly installed on the second synchronous shaft; the first gear shaft and the second gear shaft are both rotatably installed It is installed in the central cavity, a first driven gear is installed on one of the first synchronous shafts, a second driven gear is installed on one of the second synchronous shafts, a second drive motor is fixedly installed in the second side buoyancy cavity, an output end of the second drive motor extends out of the second side buoyancy cavity and is installed with a driving gear, the driving gear is meshed and connected with the second driven gear, the second gear shaft, the first gear shaft, and the first driven gear in sequence; the lifting drive mechanism also includes two third synchronous pulleys, the two third synchronous pulleys are respectively installed on the two wheel axles, one of the third synchronous pulleys is connected to the first synchronous transmission belt, and the other third synchronous pulley is connected to the second synchronous transmission belt.

[0011] Optionally, it also includes a take-up drum, one end of the pull rope is connected to the waterproof shell, and the other end is wound and installed on the take-up drum.

[0012] Optionally, two partitions are fixed in the central cavity, each of the partitions is provided with a movable opening for the movement of the wheel axle, and a dust-proof brush strip is installed in the movable opening.

[0013] Optionally, a handle is installed on one side wall of the box.

[0014] Optionally, a storage opening connected to the first side buoyancy chamber is provided on the top of the box body, and a box door for opening and closing the storage opening is hingedly installed on the top of the box body, and the box door is fixedly connected to the box body by a quick clamp.

[0015] Optionally, a battery and a controller are installed in the second side buoyancy chamber.

[0016] Compared with the prior art, this technical solution has at least one of the following beneficial effects:

[0017] By setting a pull rope and a buoyant box, the pull rope is small in size and easy to carry, and there is no need to set up extraordinary cables. The box and the water quality detector can be moved to offshore waters by parabolic or drifting. By setting a lifting drive mechanism and a rotating drive mechanism, the probe can be driven to dive and rise, and water quality detection at different water depths in offshore waters can be achieved, thereby improving the accuracy and reliability of lake water quality detection;

[0018] After the test is completed, by rolling up the probe into the box and then pulling the box back, the probe can be prevented from contacting the lake bottom or colliding with the shore due to cable swinging, thus ensuring the safety of the probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a detection device according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Sectional view along line AA;

[0021] Figure 3 for Figure 2 Sectional view along line BB;

[0022] Figure 4 A top view of a detection device according to an embodiment of the present invention;

[0023] Figure 5 for Figure 3 A partial enlarged schematic diagram of point C in the middle;

[0024] Figure 6 A side cross-sectional view of a detection device according to an embodiment of the present invention;

[0025] Figure 7 It is a partial schematic diagram of the lifting drive mechanism and the rotating drive mechanism;

[0026] Figure 8 It is a schematic diagram of the structure of the first synchronous pulley, the first synchronous transmission belt and the third synchronous pulley;

[0027] Fig. 9 It is a schematic diagram of the structure of the second synchronous pulley, the second synchronous transmission belt and the third synchronous pulley;

[0028] Fig.10 This is a state diagram of a detection device according to an embodiment of the present invention before offshore detection;

[0029] Fig.11 The working state of the detection device of one embodiment of the present invention during offshore detection Figure 1 (Shallow water detection);

[0030] Fig.12 The working state of the detection device of one embodiment of the present invention during offshore detection Figure 2 (deep water detection);

[0031] Fig.13 This is a state diagram of the detection device of one embodiment of the present invention when it is pulled back;

[0032] Fig.14 It is a schematic diagram of the structure of a water quality detector;

[0033] In the figure, 1, water quality detector; 11, detector body; 12, cable; 13, probe; 2, box; 21, first side buoyancy chamber; 22, second side buoyancy chamber; 23, central chamber; 24, opening; 25, partition; 251, movable opening; 26, dust-proof brush strip; 27, handle; 28, box door; 29, quick clamp; 3, waterproof shell; 31, first internal threaded hole; 32, first half shell; 321, first mounting seat; 322, second internal threaded hole; 33, second half shell; 331, second mounting seat; 332 mounting hole; 34, countersunk screw; 35, waterproof plug; 4, lifting drive mechanism; 401, bidirectional screw rod; 402, nut seat; 403, light rod; 404, elastic member ; 405, pressure sensor; 406, slider; 407, axle; 408, driving wheel; 409, first driving motor; 410, first bevel gear; 411, second bevel gear; 412, third synchronous pulley; 5, rotating driving mechanism; 501, second driving motor; 502, first synchronous shaft; 503, first synchronous pulley; 504, first synchronous transmission belt; 505, second synchronous shaft; 506, second synchronous pulley; 507, second synchronous transmission belt; 508, first gear shaft; 509, second gear shaft; 510, first driven gear; 511, second driven gear; 512, driving gear; 6, pull rope; 61, external threaded column; 7, take-up drum; 8, battery; 9, controller. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0035] See also Figures 1 to 14 The embodiment of the present application provides a portable detection device for lake water quality detection, including a water quality detector 1, the water quality detector 1 includes a detector body 11, a cable 12 and a probe 13, the detector body 11 is connected to the probe 13 through the cable 12, the water quality detector 1 is a prior art, and the specific model can be flexibly selected, such as the AP-2000 portable water quality rapid analyzer;

[0036] A portable detection device for lake water quality detection in an embodiment of the present application also includes a box body 2 and a waterproof shell 3. A first side buoyancy cavity 21, a second side buoyancy cavity 22 and a central cavity 23 are provided in the box body 2. The central cavity 23 is located between the first side buoyancy cavity 21 and the second side buoyancy cavity 22. The first side buoyancy cavity 21 and the second side buoyancy cavity 22 are hollow cavities that can provide buoyancy for the box body 2 while maintaining the balance of the box body 2. Openings 24 that are connected to the central cavity 23 and can be passed through by the water quality detector 1 are provided at both upper and lower ends of the box body 2. Two lifting drive mechanisms 4 distributed up and down are provided in the central cavity 23.

[0037] The lifting drive mechanism 4 includes a bidirectional screw rod 401, a nut seat 402, a light rod 403, an elastic member 404, a pressure sensor 405, a slider 406, an axle 407 and a driving wheel 408. The bidirectional screw rod 401 is rotatably mounted in the box body 2. The nut seat 402 is threadedly mounted on two threaded sections of the bidirectional screw rod 401 with opposite rotation directions. The light rod 403 is fixedly mounted in the box body 2. There are two light rods 403. The nut seat 402 is slidably connected to the light rod 403. The light rod 403 The upper slide is provided with a slider 406 corresponding to the nut seat 402 one by one. The slider 406 is installed on two light rods 403 to avoid self-rotation. A pressure sensor 405 is installed on the slider 406. An elastic member 404 is installed between the pressure sensor 405 and the nut seat 402. The elastic member 404 is a compression spring. A wheel shaft 407 is rotatably installed on the slider 406 through a bearing. A driving wheel 408 is fixedly installed on the wheel shaft 407. The two driving wheels 408 are synchronously close to or away from the center of the opening 24. By driving the bidirectional screw rod 401 to rotate, the bidirectional screw rod 401 drives the two nut seats 402 to move closer or farther away from each other. The pressure between the slider 406 and the nut seat 402 is detected by the pressure sensor 405, thereby judging whether the driving wheel 408 clamps the object;

[0038] The lifting drive mechanism 4 also includes a first drive motor 409, which is fixedly installed in the first side buoyancy chamber 21. A first bevel gear 410 is installed on the output shaft of the first drive motor 409, and one end of the bidirectional screw 401 is sealed and extends into the first side buoyancy chamber 21 and is installed with a second bevel gear 411, and the first bevel gear 410 is meshed and connected with the second bevel gear 411; the first drive motor 409 drives the first bevel gear 410 to rotate, and the first bevel gear 410 drives the second bevel gear 411 and the bidirectional screw 401 to rotate; the output shaft of the first drive motor 409 is rotatably and sealedly connected to the box body 2 through a sealed bearing to prevent water from entering the first side buoyancy chamber 21.

[0039] In order to facilitate the rotation of the driving wheel 408 and the shaft 407, a rotation drive mechanism 5 is provided in the central cavity 23. The rotation drive mechanism 5 drives the wheel shaft 407 to rotate. The rotation directions of the two wheel shafts 407 of the lifting drive mechanism 4 are opposite; the rotation drive mechanism 5 includes a second driving motor 501, a first synchronous shaft 502, a first synchronous pulley 503, a first synchronous transmission belt 504, a second synchronous shaft 505, a second synchronous pulley 506, a second synchronous transmission belt 507, a first gear shaft 508, a second gear shaft 509, and a first gear shaft 501. A driven gear 510, a second driven gear 511 and a driving gear 512; four first synchronous shafts 502 are provided and are distributed in a rectangular shape in the central cavity 23, the first synchronous shaft 502 is rotatably connected to the housing 2, and the first synchronous pulley 503 is fixedly mounted on the first synchronous shaft 502; four second synchronous shafts 505 are provided and are distributed in a rectangular shape in the central cavity 23, the second synchronous shaft 505 is rotatably connected to the housing 2, and the second synchronous pulley 506 is fixedly mounted on the second synchronous shaft 505; the first gear shaft 508 and the second gear The shafts 509 are all rotatably mounted in the central cavity 23, a first driven gear 510 is mounted on one of the first synchronous shafts 502, a second driven gear 511 is mounted on one of the second synchronous shafts 505, the second drive motor 501 is fixedly mounted in the second side buoyancy cavity 22, the output end of the second drive motor 501 extends out of the second side buoyancy cavity 22 and is mounted with a driving gear 512, the driving gear 512 is connected to the second driven gear 511, the second gear shaft 509, the first gear shaft 508, and the first driven gear 511. 0 are meshed and connected in sequence; the second driving motor 501 drives the driving gear 512 to rotate, thereby driving the second driven gear 511, the second gear shaft 509, the first gear shaft 508, and the first driven gear 510 to rotate. By setting the second gear shaft 509 and the first gear shaft 508, a transmission and direction-changing effect can be achieved, so that the second driven gear 511 and the first driven gear 510 have the same speed and opposite rotation directions, so that the first synchronous transmission belt 504 and the second synchronous transmission belt 507 have opposite movement directions;

[0040] The lifting drive mechanism 4 also includes two third synchronous pulleys 412, which are respectively mounted on two axles 407, one of which is connected to the first synchronous transmission belt 504, and the other is connected to the second synchronous transmission belt 507. The first synchronous transmission belt 504 and the second synchronous transmission belt 507 are not on the same vertical plane, and one of the axles 407 of the lifting drive mechanism 4 is longer, while the other is shorter, so that the two third synchronous pulleys 412 are connected to the first synchronous pulley 503 and the second synchronous pulley 506, respectively, so that the two third synchronous pulleys 412 have the same rotation speed and opposite rotation directions, so that the two driving wheels 408 have the same rotation speed and opposite rotation directions, so that the pull rope 6, the waterproof shell 3, the cable 12 and the probe 13 can move stably. By providing the first synchronous transmission belt 504 and the second synchronous transmission belt 507 , the third synchronous pulley 412 can still maintain transmission connection with the first synchronous transmission belt 504 or the second synchronous transmission belt 507 during the movement of the driving wheel 408 , so that the driving wheel 408 can keep rotating.

[0041] A battery 8 and a controller 9 are installed in the second side buoyancy chamber 22. The battery 8 supplies power to the first drive motor 409, the second drive motor 501, the pressure sensor 405 and the controller 9. The controller 9 has a wireless transceiver module and can maintain a wireless communication connection with the terminal device.

[0042] The detector body 11 can be detachably installed in the waterproof shell 3. The waterproof shell 3 can seal and protect the detector body 11. The cable 12 passes through the bottom of the waterproof shell 3. A pull rope 6 is installed on the top of the waterproof shell 3. The diameter of the pull rope 6 is smaller than the diameter of the cable 12. The pull rope 6 can be made of fishing line, such as nylon line, fluorocarbon line, and polyamide line. While ensuring the strength of the pull rope 6, the diameter of the pull rope 6 is small, and it occupies a small space when rolled up, which is easy to carry.

[0043] In order to facilitate the driving wheel 408 to drive the waterproof shell 3 to move, the upper and lower parts of the waterproof shell 3 are set to be conical, and the middle part of the waterproof shell 3 is cylindrical, so that the waterproof shell 3 is a rotating body structure, so that the driving wheel 408 can drive the waterproof shell 3 to move up and down when it contacts the waterproof shell 3 at different circumferential positions; in order to facilitate the connection of the pull rope 6 at the top of the waterproof shell 3, a first internal threaded hole 31 is set in the upper part of the waterproof shell 3, and an external threaded column 61 is installed at one end of the pull rope 6, and the external threaded column 61 is threadedly connected to the first internal threaded hole 31.

[0044] In order to facilitate the detachable installation of the detector body 11 in the waterproof shell 3, the waterproof shell 3 is designed to be sealed and spliced ​​by the first half shell 32 and the second half shell 33. The first internal threaded hole 31 is also spliced ​​by the first half shell 32 and the second half shell 33. A plurality of first mounting seats 321 are provided on the inner wall of the first half shell 32. The first mounting seat 321 is provided with a second internal threaded hole 322. A second mounting seat 331 corresponding to the first mounting seat 321 is provided on the inner wall of the second half shell 33. The second mounting seat 331 is provided with a mounting hole 332 that passes through the second half shell 33. The first mounting seat 321 and the second mounting seat 331 are connected by a countersunk screw 34 threadedly connected to the second internal threaded hole 322. A waterproof plug 35 for closing the mounting hole 332 is installed on the second half shell 33. The first half shell 32 and the second half shell 33 are spliced ​​together to form the waterproof shell 3. The design of the first mounting seat 321 and the second mounting seat 331 makes the outer wall of the waterproof shell 3 have no protrusions, which is convenient for contact with the driving wheel 408; after the countersunk screw 34 connects the first mounting seat 321 and the second mounting seat 331, the countersunk screw 34 is completely located in the mounting hole 332, but there is still a gap at the opening of the mounting hole 332. In order to prevent water from entering the waterproof shell 3 through the mounting hole 332, a waterproof plug 35 for closing the mounting hole 332 is installed on the second half shell 33. After the waterproof plug 35 is installed at the opening of the mounting hole 332, it can play a role in blocking water and waterproofing, and at the same time prevent impurities from entering the mounting hole 332, making the waterproof shell 3 more beautiful.

[0045] In this embodiment, when it is necessary to test the water quality of offshore waters, please refer to Fig.10 , install the detector body 11 in the waterproof shell 3, so that the two driving wheels 408 of the upper lifting drive mechanism 4 clamp the waterproof shell 3, and the two driving wheels 408 of the lower lifting drive mechanism 4 clamp the probe 13, and then control one end of the pull rope 6, connect the other end of the pull rope 6 to the waterproof shell 3, and then throw the box body 2, the waterproof shell 3, the water quality detector 1, etc. into the water together, so that the water quality detector 1 is in the water area far from the shore. Since the first side buoyancy chamber 21 and the second side buoyancy chamber 22 are provided in the box body 2, after the box body 2 is put into the water, it can generate buoyancy sufficient to support the box body 2 and the water quality detector 1 and other components, so as to prevent the box body 2 from sinking into the water, thereby facilitating water quality detection in the water area far from the shore;

[0046] During the detection, the staff on the shore sends a wireless signal to the controller 9 through the control terminal. After receiving the wireless signal, the controller 9 controls the lifting drive mechanism 4 and the rotating drive mechanism 5 to work. First, the lifting drive mechanism 4 of the lower layer works first, and the first drive motor 409 drives the bidirectional screw rod 401 to rotate forward, and the bidirectional screw rod 401 drives the two nut seats 402 to move away from each other. The pressure between the slider 406 and the nut seat 402 is detected by the pressure sensor 405. When the pressure detected by the pressure sensor 405 is lower than the preset value, it is determined that the driving wheel 408 is away from the probe 13. At this time, the probe 13 automatically falls due to gravity. Please refer to Fig.11 , can detect shallow water quality in offshore waters;

[0047] When testing deep water quality in offshore waters is required, please refer to Fig.12 , control the rotation drive mechanism 5 to work, the second drive motor 501 drives the first synchronous transmission belt 504 and the second synchronous transmission belt 507 to keep moving in opposite directions, thereby driving the two drive wheels 408 of the upper lifting drive mechanism 4 to rotate synchronously in the opposite direction, and the two drive wheels 408 of the upper layer drive the waterproof shell 3 to move downward. When the drive wheel 408 contacts the conical part on the upper part of the waterproof shell 3, since the radius of the conical part gradually decreases from bottom to top, the pressure between the drive wheel 408 and the conical part will decrease. When the pressure sensor 405 of the upper layer detects that the pressure decreases, the first drive motor 409 of the upper layer drives the bidirectional screw rod 401 to rotate in the opposite direction, and the bidirectional screw rod 401 drives the two nut seats 40 2 are close to each other, and the nut seat 402 pushes the slider 406 to approach through the elastic member 404, so that the driving wheel 408 presses the waterproof shell 3, so that the pressure detected by the pressure sensor 405 is within the preset range, so that the driving wheel 408 and the waterproof shell 3 maintain a better pressure, and avoid the water quality detector 1 from losing control when being lowered; similarly, when the driving wheel 408 contacts the pull rope 6, the driving wheel 408 and the pull rope 6 also maintain a better pressure, so that the probe 13 is stably lowered into the deep water, and finally the rotating drive mechanism 5 is controlled to stop working, so that the probe 13 can be stabilized in the preset water level for water quality detection; the overall gravity of the waterproof shell 3 and the water quality detector 1 is greater than the buoyancy, and it can freely dive into the water;

[0048] After the test is completed, since the probe 13 dives deep, in order to prevent the probe 13 from contacting the lake bottom or colliding with the shore due to the swing of the cable 12, it is not possible to directly pull the pull rope 6 to pull the box 2 to the shore. The probe 13 and the waterproof shell 3 must be rolled up first; please refer to Fig.13Specifically, the rotation drive mechanism 5 and the lifting drive mechanism 4 are controlled to work, and the second drive motor 501 rotates in the opposite direction, so that the two driving wheels 408 on the upper layer drive the pull rope 6 to rise, and at the same time, the staff on the shore reel in the pull rope 6 to prevent the pull rope 6 from being too loose; when the pressure sensor 405 detects an increase in pressure, it means that the two driving wheels 408 on the upper layer are in contact with the conical cylinder part on the upper part of the waterproof shell 3. Due to the conical structure of the conical cylinder part, the two driving wheels 408 on the upper layer cannot drive the inclined outer wall of the conical cylinder part to rise. At this time, the lifting drive mechanism 4 on the lower layer works, so that the two driving wheels 408 on the lower layer are close to each other, and the center distance between the driving wheels 408 on the lower layer and the driving wheels 408 on the upper layer is greater than the height of the conical cylinder part, so the driving wheels 408 on the lower layer will contact the cylindrical part in the middle of the waterproof shell 3. , or the waterproof shell 3 contacts with the lower conical cylinder part, thereby driving the waterproof shell 3 to rise; the diameter of the probe 13 is larger than the diameter of the cable 12, and when the pressure sensor 405 of the lower layer detects an increase in pressure, it means that the driving wheel 408 of the lower layer is in contact with the probe 13, and then when the pressure sensor 405 of the upper layer detects an increase in pressure, it means that the driving wheel 408 of the upper layer is also in contact with the probe 13, and when the pressure sensor 405 of the lower layer detects a decrease in pressure, it means that the driving wheel 408 of the lower layer is about to be separated from the probe 13, and at this time, the bottom of the probe 13 completely rises into the central cavity 23, and the rotation drive mechanism 5 is controlled to stop working, and then the staff pulls the box 2 back to the shore through the pull rope 6. Since the probe 13 is inside the box 2, it will not contact the lake bottom or shore obstacles, thereby ensuring the safety of the probe 13.

[0049] A V-shaped ring groove is provided in the middle of the driving wheel 408, which can limit the pull rope 6, the waterproof shell 3, the cable 12 and the probe 13, thereby preventing the pull rope 6, the waterproof shell 3, the cable 12 and the probe 13 from detaching from the driving wheel 408 when in contact with the driving wheel 408.

[0050] In a specific embodiment, to facilitate the winding and unwinding of the drawstring 6, please refer to Figure 1 , Figures 10 to 13 Optionally, a take-up drum 7 is provided, one end of the pull rope 6 is connected to the waterproof shell 3, and the other end is wound on the take-up drum 7. The staff on the shore can hold the take-up drum 7 to reel the pull rope 6.

[0051] In one embodiment, to prevent foreign matter from contacting the bidirectional screw rod 401 and preventing foreign matter from getting stuck between the slider 406 and the nut seat 402, refer to Figures 1 to 3 Optionally, two partitions 25 are fixed in the central cavity 23, each of which is provided with an active opening 251 for the wheel shaft 407 to move, and a dustproof brush strip 26 is installed in the active opening 251. The dustproof brush strip 26 has flexible bristles, which can prevent impurities entering the central cavity 23 from the opening 24 from passing through the active opening 251, and will not prevent the wheel shaft 407 from moving.

[0052] In a specific embodiment, in order to facilitate personnel to carry the box 2, please refer to Figures 1 to 4 Optionally, a handle 27 is installed on one side wall of the box body 2. The inspector can hold the handle 27 to facilitate moving the box body 2.

[0053] In a specific embodiment, in order to facilitate the storage of the water quality detector 1 and the waterproof case 3, please refer to Figures 1 to 4 Optionally, a storage opening connected to the first side buoyancy chamber 21 is provided on the top of the box body 2, and a box door 28 for opening and closing the storage opening is hingedly installed on the top of the box body 2, and the box door 28 is fixedly connected to the box body 2 through a quick clamp 29. A sealing ring is provided at the box door 28 or the storage opening, and after the box door 28 is connected to the box body 2 through the quick clamp 29, the box door 28 can seal the storage opening, so that the first side buoyancy chamber 21 remains closed. After opening the storage opening, the water quality detector 1 and the waterproof shell 3 can be placed in the first side buoyancy chamber 21, making the device more convenient to carry.

[0054] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A portable detection device for lake water quality detection, comprising a water quality detector (1), wherein the water quality detector (1) comprises a detector body (11), a cable (12) and a probe (13), wherein the detector body (11) is connected to the probe (13) via the cable (12), and wherein: The invention also comprises a box body (2) and a waterproof shell (3), wherein the box body (2) is provided with a first side buoyancy chamber (21), a second side buoyancy chamber (22) and a central chamber (23), wherein the central chamber (23) is located between the first side buoyancy chamber (21) and the second side buoyancy chamber (22), and the box body (2) is provided with openings (24) at both upper and lower ends thereof, which are connected to the central chamber (23) and can allow the water quality detector (1) to pass through, and the central chamber (23) is provided with two lifting drive mechanisms (4) distributed up and down; the lifting drive mechanism (4) comprises a bidirectional screw rod (401), a nut seat (402), a light rod (403), an elastic member (404), a pressure sensor (405), a slider (406), a wheel shaft (407) and a driving wheel (408), wherein the bidirectional screw rod (401) is rotatably mounted in the box body (2), and the nut seat (402) is threadedly mounted on two threaded sections of the bidirectional screw rod (401) with opposite rotation directions, and the light rod (40 3) is fixedly installed in the box body (2), the nut seat (402) is slidably connected to the light rod (403), a slider (406) corresponding to the nut seat (402) is slidably installed on the light rod (403), a pressure sensor (405) is installed on the slider (406), an elastic member (404) is installed between the pressure sensor (405) and the nut seat (402), a wheel shaft (407) is rotatably installed on the slider (406), a driving wheel (408) is fixedly installed on the wheel shaft (407), and the two driving wheels (408) are synchronously approached or moved away from the center of the opening (24); a rotating drive mechanism (5) is provided in the central cavity (23), and the rotating drive mechanism (5) drives the wheel shaft (407) to rotate; the detector body (11) is detachably installed in the waterproof shell (3), the cable (12) passes through the bottom of the waterproof shell (3), and a pull rope (6) is installed on the top of the waterproof shell (3), and the diameter of the pull rope (6) is smaller than the diameter of the cable (12); The lifting drive mechanism (4) further comprises a first drive motor (409), the first drive motor (409) being fixedly mounted in the first side buoyancy chamber (21), a first bevel gear (410) being mounted on an output shaft of the first drive motor (409), one end of the bidirectional lead screw (401) being sealed and extending into the first side buoyancy chamber (21) and being mounted with a second bevel gear (411), the first bevel gear (410) being meshingly connected with the second bevel gear (411); The rotary drive mechanism (5) comprises a second drive motor (501), a first synchronous shaft (502), a first synchronous pulley (503), a first synchronous transmission belt (504), a second synchronous shaft (505), a second synchronous pulley (506), a second synchronous transmission belt (507), a first gear shaft (508), a second gear shaft (509), a first driven gear (510), a second driven gear (511) and a driving gear (512); the first synchronous shaft (502) is set to Four of the first synchronous shafts (502) are arranged in a rectangular shape in the central cavity (23), the first synchronous shaft (502) is rotatably connected to the housing (2), and the first synchronous pulley (503) is fixedly mounted on the first synchronous shaft (502); four of the second synchronous shafts (505) are arranged in a rectangular shape in the central cavity (23), the second synchronous shaft (505) is rotatably connected to the housing (2), and the second synchronous pulley (506) is fixedly mounted on the second synchronous shaft (505); the first gear shaft (508) and the second gear shaft (50 9) are rotatably mounted in the central cavity (23), a first driven gear (510) is mounted on one of the first synchronous shafts (502), a second driven gear (511) is mounted on one of the second synchronous shafts (505), a second drive motor (501) is fixedly mounted in the second side buoyancy cavity (22), an output end of the second drive motor (501) extends out of the second side buoyancy cavity (22) and is mounted with a driving gear (512), the driving gear (512) is meshed and connected with the second driven gear (511), the second gear shaft (509), the first gear shaft (508), and the first driven gear (510) in sequence; the lifting drive mechanism (4) further comprises two third synchronous pulleys (412), the two third synchronous pulleys (412) are respectively mounted on the two wheel shafts (407), one of the third synchronous pulleys (412) is in transmission connection with the first synchronous transmission belt (504), and the other third synchronous pulley (412) is in transmission connection with the second synchronous transmission belt (507).

2. The portable detection device for lake water quality detection according to claim 1, characterized in that: The upper and lower parts of the waterproof shell (3) are both conical, the middle part of the waterproof shell (3) is cylindrical, the upper part of the waterproof shell (3) is provided with a first internal thread hole (31), one end of the pull rope (6) is mounted with an external thread column (61), and the external thread column (61) is threadedly connected to the first internal thread hole (31).

3. The portable detection device for lake water quality detection according to claim 2, characterized in that: The waterproof shell (3) is formed by sealingly splicing a first half shell (32) and a second half shell (33); a plurality of first mounting seats (321) are provided on the inner wall of the first half shell (32); the first mounting seats (321) are provided with second internal threaded holes (322); a second mounting seat (331) corresponding to the first mounting seat (321) is provided on the inner wall of the second half shell (33); the second mounting seat (331) is provided with a mounting hole (332) penetrating the second half shell (33); the first mounting seat (321) and the second mounting seat (331) are connected by a countersunk screw (34) threadedly connected to the second internal threaded hole (322); and a waterproof plug (35) for closing the mounting hole (332) is installed on the second half shell (33).

4. The portable detection device for lake water quality detection according to claim 1, characterized in that: It also includes a wire take-up drum (7), one end of the pull rope (6) is connected to the waterproof shell (3), and the other end is wound and mounted on the wire take-up drum (7).

5. The portable detection device for lake water quality detection according to claim 1, characterized in that: Two partitions (25) are fixed in the central cavity (23), each of the partitions (25) is provided with a movable opening (251) for the wheel shaft (407) to move, and a dustproof brush strip (26) is installed in the movable opening (251).

6. The portable detection device for lake water quality detection according to claim 1, characterized in that: A handle (27) is installed on one side wall of the box body (2).

7. The portable detection device for lake water quality detection according to claim 1, characterized in that: The top of the box body (2) is provided with a storage opening which is in communication with the first side buoyancy chamber (21); the top of the box body (2) is hingedly provided with a box door (28) for opening and closing the storage opening; the box door (28) is fixedly connected to the box body (2) via a quick clamp (29).

8. The portable detection device for lake water quality detection according to claim 1, characterized in that: A battery (8) and a controller (9) are installed in the second side buoyancy chamber (22).

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