Mobile water quality sampling instrument for water quality detection

By designing a mobile water quality sampler for water quality detection including floating airbags, fixed frames, support plates and rope control devices, the problems of low sampling efficiency and unstable sample quality in the prior art are solved, and efficient and stable water quality sampling and long battery life are achieved.

CN119510047AInactive Publication Date: 2025-02-25NANJING NORMAL UNIVERSITY
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Patent Information

Application Number
CN202510099891.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-22
Publication Date
2025-02-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During the sampling process, the existing mobile water quality detection device affects the sample due to the large load sample size, large volume and temperature changes, resulting in low sampling efficiency and unstable sample quality.

Method used

A mobile water quality sampler for water quality detection including floating airbags, fixed frames, support plates and rope control devices is designed. Through rope control devices and integrated lightweight and stable sampling is achieved, and the load bearing pressure on the hull is reduced.

Benefits of technology

It realizes efficient sampling, reduces dependence on battery components, improves the battery life of the device, reduces the impact of temperature changes during the sampling process on the sample, and improves sample quality and sampling efficiency.

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Abstract

The invention relates to the technical field of water quality detection, in particular to a movable water quality sampling instrument for water quality detection, which comprises floating air bags, two fixed frames arranged between two parallel floating air bags and positioned at two ends, a support plate arranged between the two fixed frames, four uniformly distributed rope control devices arranged on the support plate, and a movable water quality sampling instrument arranged between the four rope control devices, a liftable water quality detection sampling instrument is arranged at the bottom of the rope control device, and an integrated light paddle rudder device is fixedly mounted at the tail end of the supporting plate. The mobile water quality sampling instrument for water quality detection has the advantages of large sample sampling amount, light weight, small size and stable sampling device temperature.
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Description

Technical Field

[0001] The invention relates to the technical field of water quality detection, and in particular to a mobile water quality sampling instrument for water quality detection. Background Art

[0002] Mobile water quality testing water quality detector is a portable device designed for environmental monitoring, water quality testing and sewage treatment. These samplers are usually small, easy to carry, easy to operate, and highly automated. In water quality testing, an important step is to sample the water body. The common mobile water quality testing devices in the prior art are mostly miniature remote sensing ships, which reach the designated location through remote control of the hull and control the water level depth of the sampling container through the lifting device, so as to achieve sampling and collection of specific waters and specific depths for inspection; Due to its own limitations, in addition to the necessary remote sensing devices, oars and oar control devices, propulsion rudders and rudder control devices, the device also needs to carry the sampling tube. The more samples that need to be sampled, the higher the carrying capacity requirements of the hull, the larger the volume of the hull, and the sampling tube is placed on the hull. Due to the large difference between the water temperature and the water surface temperature, the rapid change in temperature also has a great impact on the microorganisms and chemical elements in the sample. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a mobile water quality sampler for water quality detection, which has the advantages of large sampling sample quantity, light weight, small size and stable sampling device temperature.

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is: a mobile water quality sampler for water quality testing, which includes a floating airbag, two fixed frames located at both ends are arranged between two side-by-side floating airbags, a support plate is arranged between the two fixed frames, four evenly distributed rope control devices are arranged on the support plate, a liftable water quality sampling container is arranged at the bottom of the rope control device, and an integrated light paddle and rudder device is fixedly installed at the tail end of the support plate.

[0005] As an improvement, the support plate includes a hollow plate body, in which four evenly distributed first through grooves for installing the rope control device are provided, and the rope control device can move up and down in the first through grooves.

[0006] As an improvement, the rope control device includes a device shell, two opposite ends of the device shell are provided with limit shells, the limit shell includes a bottomless shell fixedly mounted on the device shell, a second through groove is provided on the side of the bottomless shell away from the device shell, and a third through groove is provided on the device shell and communicated with the bottomless shell.

[0007] As an improvement, a rope winding roller with a tooth groove at the end is provided inside the device shell, a rope is provided on the rope winding roller, and the tail end of the rope is fixedly connected to the water quality sampling container. A first light motor connected to the rope winding roller is provided outside the device shell, and shafts are provided on both sides of the rope winding roller. Locking components that can control the length of the rope are rotatably connected to the two shafts.

[0008] As an improvement, the locking assembly includes a sleeve body rotatably connected to the shaft, a rod body is provided on the side of the sleeve body close to the limit shell, a slide groove is provided on the end of the rod body away from the sleeve body, a sliding shaft is provided in the slide groove that can slide and rotate in the slide groove, the end of the rod body away from the sleeve body can move in the second through groove, the two ends of the sliding shaft are rotatably connected to the limit slider, the limit slider can move up and down on both sides in the bottomless shell body, a spring is provided between the top of the limit slider and the inner wall of the bottomless shell body, an L-shaped rod body is provided on the side of the sleeve body close to the rope winding roller, a semicircular fixed sleeve is provided on the end of the L-shaped rod body away from the sleeve body, and the semicircular fixed sleeve is provided with teeth matching the tooth grooves at both ends of the rope winding roller.

[0009] As an improvement, a first protruding edge is provided at the bottom of the first through groove, second protruding edges corresponding to the first protruding edge are provided on both sides of the device shell, a spring telescopic rod is provided between the second protruding edge and the first protruding edge, and two sliding rails slidably connected to the bottomless shell are provided in the first through groove, a limit platform is provided at the bottom of the slide rail, and a protrusion that can slide in the bottomless shell is provided on the limit platform.

[0010] As an improvement, the integrated lightweight propeller and rudder device includes an L-shaped mounting plate fixedly mounted on the rear end of the support plate, an extension mounting frame is provided on the vertical plate of the L-shaped mounting plate, a worm gear is rotatably connected to the extension mounting frame, a worm gear cooperating with the worm gear is provided on the extension mounting frame, a micro motor is connected to one end of the worm gear, an L-shaped cylinder body rotatably connected to the extension mounting frame is fixedly connected to the bottom of the worm gear, a drive motor is provided on the horizontal plate of the L-shaped mounting plate, a universal transmission assembly is provided between the drive motor, the worm gear and the L-shaped cylinder body, a paddle blade connected to the universal transmission assembly is provided on the end of the L-shaped cylinder body away from the extension mounting frame, and an L-shaped rudder is fixedly connected to the outer arc wall of the L-shaped cylinder body.

[0011] As an improvement, the universal transmission assembly includes three double-headed transmission shafts connected by universal joints, the middle double-headed transmission shaft is rotationally connected to the worm gear, and the upper double-headed transmission shaft is universally connected to an input shaft, which is connected to the drive motor.

[0012] As an improvement, the double-headed transmission shaft at the bottom is located in an L-shaped cylinder, and the end of the double-headed transmission shaft at the bottom away from the middle double-headed transmission shaft is universally connected with an output shaft, the output shaft is rotationally connected to the L-shaped cylinder, and the end of the output shaft exposed from the L-shaped cylinder is connected to the blade.

[0013] After adopting the above structure, the present invention has the following advantages: the device as a whole can ensure endurance through the rope control device and the integrated light propeller and rudder device without a large number of battery components, the sampling volume is higher than the upper limit, the energy consumption is lower, and the propeller and rudder are integrated, which is lighter than the prior art; 1. The locking assembly uses the drag of the water sampling container on the hull when the device moves to control the release length of the rope, thereby reducing the bearing pressure of the battery assembly on the support plate on the entire device and improving the endurance of the device; 2. The overall movement of the device can be controlled by the micro motor and drive motor of the worm gear in conjunction with the universal transmission assembly. The existing technology usually uses separate propellers and rudders, so two sets of power devices and control devices are required to control the propellers and rudders respectively. Compared with the existing technology, it is lighter and reduces the load-bearing pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a mobile water quality sampling instrument for water quality detection of the present invention. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the structure of a mobile water quality sampling instrument for water quality detection of the present invention. Figure 2 .

[0016] Figure 3 This is a schematic diagram of the structure of a rope control device for a mobile water quality sampler for water quality testing of the present invention. Figure 1 .

[0017] Figure 4 This is a schematic diagram of the structure of a rope control device for a mobile water quality sampler for water quality testing of the present invention. Figure 2 .

[0018] Figure 5 The present invention is a structural schematic diagram of a device shell of a mobile water quality sampler for water quality detection.

[0019] Figure 6 The invention discloses a mobile water quality sampling instrument for water quality detection. Figure 5 A magnified view of the detail of part B.

[0020] Figure 7 The present invention is a structural schematic diagram of a locking component of a mobile water quality sampler for water quality testing.

[0021] Figure 8 The present invention is a structural schematic diagram of a support plate of a mobile water quality sampler for water quality testing.

[0022] Fig. 9 The invention discloses a mobile water quality sampling instrument for water quality detection. Figure 8 A magnified detail of part A.

[0023] Fig.10 The present invention is a structural schematic diagram of an integrated light-weight propeller-rudder device of a mobile water quality sampler for water quality detection.

[0024] Fig.11 The present invention is a structural schematic diagram of a universal transmission component of a mobile water quality sampler for water quality detection.

[0025] Fig.12 The present invention is a partial structural diagram of an L-shaped cylinder of a mobile water quality sampler for water quality detection.

[0026] As shown in the figure: 1. floating airbag; 2. fixed frame; 3. support plate; 301. hollow plate body; 302. first through slot; 303. first protruding edge; 304. slide rail; 305. protrusion; 306. limit platform; 4. rope control device; 401. device shell; 402. limit shell; 4021. third through slot; 4022. bottomless shell; 4023. second through slot; 403. shaft; 404. locking assembly; 4041. sleeve; 4042. L-shaped rod; 4043. semicircular fixed sleeve; 4044. slide slot; 4045. limit slider; 4046. slide shaft; 4047. spring ; 4048, teeth; 4049, rod body; 405, rope roller; 406, first light motor; 407, spring telescopic rod; 408, rope; 409, second protruding edge; 5, water quality sampling container; 501, sampling container body; 502, conical counterweight; 6, integrated light paddle and rudder device; 601, L-shaped mounting plate; 602, extension mounting frame; 603, drive motor; 604, universal transmission assembly; 6041, double-headed transmission shaft; 6042, input shaft; 6043, output shaft; 605, worm gear; 606, L-shaped cylinder; 607, L-shaped rudder; 608, worm; 609, paddle blade. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] Combined with Figure 1 A mobile water quality sampler for water quality detection includes a floating airbag 1. Two fixed frames 2 located at both ends are arranged between two side-by-side floating airbags 1. Through this structure, a floating basic frame of the hull is formed. The floating airbag 1 is a prior art, so it is not described in detail here.

[0029] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 8 and attached Fig. 9 : A support plate 3 is provided between the two fixed frames 2, and four evenly distributed rope control devices 4 are provided on the support plate 3. A liftable water quality sampling container 5 is provided at the bottom of the rope control device 4. The support plate 3 includes a hollow plate body 301, and four evenly distributed first through grooves 302 for installing the rope control device 4 are provided in the hollow plate body 301. The rope control device 4 can move up and down in the first through grooves 302. Through this structure, the support plate 3 is used to carry control devices such as remote sensing controllers. This is a prior art and is not described here.

[0030] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 8 and attached Fig. 9 : The rope control device 4 includes a device housing 401, two opposite ends of the device housing 401 are provided with a limit housing 402, the limit housing 402 includes a bottomless housing 4022 fixedly mounted on the device housing 401, a second through slot 4023 is provided on the side of the bottomless housing 4022 away from the device housing 401, and a third through slot 4021 is provided on the device housing 401 and communicates with the bottomless housing 4022; A rope reel 405 with a tooth groove at the end is provided inside the device housing 401, a rope 408 is provided on the rope reel 405, and the tail end of the rope 408 is fixedly connected to the water quality sampling container 5. A first light motor 406 connected to the rope reel 405 is provided outside the device housing 401, and shafts 403 are provided on both sides of the rope reel 405. The two shafts 403 are rotatably connected with locking components 404 that can control the length of the rope 408. The locking assembly 404 includes a sleeve 4041 rotatably connected to the shaft 403, a rod 4049 is provided on the side of the sleeve 4041 close to the limiting housing 402, a slide groove 4044 is provided on the end of the rod 4049 away from the sleeve 4041, a slide shaft 4046 is provided in the slide groove 4044, and the end of the rod 4049 away from the sleeve 4041 can move in the second through groove 4023, and both ends of the slide shaft 4046 are rotatably connected to the limiting slider 4023. 045, the limit slider 4045 can move up and down on both sides of the bottomless shell 4022, a spring 4047 is provided between the top of the limit slider 4045 and the inner wall of the bottomless shell 4022, an L-shaped rod 4042 is provided on the side of the sleeve 4041 close to the rope winding roller 405, and a semicircular fixing sleeve 4043 is provided on the end of the L-shaped rod 4042 away from the sleeve 4041, and teeth 4048 matching with the tooth grooves at both ends of the rope winding roller 405 are provided in the semicircular fixing sleeve 4043; A first protruding edge 303 is provided at the bottom of the first through slot 302, and second protruding edges 409 corresponding to the first protruding edge 303 are provided on both sides of the device housing 401, and a spring telescopic rod 407 is provided between the second protruding edge 409 and the first protruding edge 303. Two slide rails 304 slidably connected to the bottomless housing 4022 are provided in the first through slot 302, and a limiting platform 306 is provided at the bottom of the slide rail 304, and a protrusion 305 that can slide in the bottomless housing 4022 is provided on the limiting platform 306; The water quality sampling container 5 includes a sampling container body 501 connected to a rope 408. The sampling container body 501 is a prior art, so it is not described here. A conical counterweight 502 is fixedly installed at the bottom of the sampling container body 501 to facilitate the sampling container body 501 to fall in the water. Through the above structure, the first light motor 406 is remotely controlled to rotate the rope roller 405. After the rope 408 reaches the specified position, the sampling container body 501 collects samples from the specified water body. The first light motor 406 is remotely controlled to rotate in the opposite direction to shorten the rope 408 by a certain distance. In order to prevent the ambient temperature of the sample from changing too much, the shortening distance should not be too much, and the probability of entanglement with water plants at the bottom of the water area can be reduced. Therefore, the release length of the rope 408 needs to be moderate. Since the lightweight motor of the prior art needs to maintain power supply if the release length of the rope 408 needs to be fixed, maintaining power supply requires a sufficient amount of battery components to be placed on the hollow plate body 301. If the amount of battery components is too large, it is difficult for the device as a whole to remain floating. After the rope 408 is released to a certain extent, the first light motor 406 keeps power supply, and the hull moves on the water surface as a whole. The sampling container body 501 and the conical counterweight 502 will drag the rope roller 405 during the movement, so that the device shell 401 overcomes the pre-tension of the spring telescopic rod 407, and thus moves downward in the first through groove 302. At this time, the protrusion 305 moves upward relative to the bottomless shell 4022, and lifts the limit slider 4045. After the limit slider 4045 moves upward, it drives the rod body 4049 close to the end of the sliding shaft 4046 to move upward, so that the rod body 4049 and the L-shaped rod body 4 042 rotates around the central axis of the sleeve 4041, thereby bringing the semicircular fixed sleeve 4043 closer to the two ends of the rope winding roller 405. When the tooth 4048 is inserted into the tooth grooves at both ends of the rope winding roller 405, the first light motor 406 stops supplying power. At this time, during the long-term movement of the entire device, the released length of the rope 408 remains unchanged. Compared with the prior art method of placing the sampling tube on the carrying hull, this method only needs to overcome the dragging force of the sampling container body 501 and the conical counterweight 502 on the entire device. A large amount of battery components are not required to ensure endurance, and the sampling volume is higher than the upper limit, with lower energy consumption.

[0031] Combined with Figure 2 , Attachment Fig.10 , Attachment Fig.11 and attached Fig.12: An integrated light propeller and rudder device 6 is fixedly installed at the tail end of the support plate 3, and the integrated light propeller and rudder device 6 includes an L-shaped mounting plate 601 fixedly installed at the tail end of the support plate 3, an extension mounting frame 602 is provided on the vertical plate of the L-shaped mounting plate 601, a worm gear 605 is rotatably connected to the extension mounting frame 602, a worm 608 cooperating with the worm gear 605 is provided on the extension mounting frame 602, a micro motor is connected to one end of the worm gear 608, an L-shaped cylinder 606 rotatably connected to the bottom of the worm gear 605 is fixedly connected, a driving motor 603 is provided on the horizontal plate of the L-shaped mounting plate 601, a universal transmission assembly 604 is provided between the driving motor 603, the worm gear 605 and the L-shaped cylinder 606, a blade 609 connected to the universal transmission assembly 604 is provided at one end of the L-shaped cylinder 606 away from the extension mounting frame 602, and an L-shaped rudder 607 is fixedly connected to the outer arc wall of the L-shaped cylinder 606; The universal transmission assembly 604 includes three double-headed transmission shafts 6041 connected by universal joints, the middle double-headed transmission shaft 6041 is rotationally connected to the worm gear 605, and the upper double-headed transmission shaft 6041 is universally connected to an input shaft 6042, and the input shaft 6042 is connected to the drive motor 603; The double-headed transmission shaft 6041 at the bottom is located in the L-shaped cylinder 606, and one end of the double-headed transmission shaft 6041 at the bottom away from the middle double-headed transmission shaft 6041 is universally connected with an output shaft 6043, and the output shaft 6043 is rotationally connected to the L-shaped cylinder 606. The output shaft 6043 is connected to the blade 609 at one end exposed from the L-shaped cylinder 606.

[0032] Through this structure, in the initial position, see the attached Fig.10 , start the drive motor 603, drive the universal transmission assembly 604 to rotate as a whole, and then control the rotation of the blade 609. When turning is required, the micro motor drives the worm 608 to rotate, thereby driving the worm wheel 605 to rotate. The rotation of the worm wheel 605 drives the L-shaped cylinder 606 and the L-shaped rudder 607 to rotate. After rotating to a specified angle, start the drive motor 603 to deflect the entire device in a specified direction. Compared with the prior art method of separately controlling the blade and the rudder, the integrated structure is adopted, which is lighter and reduces the bearing pressure of the hull.

[0033] When the present invention is implemented, the device is more suitable for use in deep waters. The micro motor of the worm 608 and the drive motor 603 control the device to move to a designated water area as a whole; The first light motor 406 is remotely controlled to rotate the rope roller 405, and the rope 408 is released to reach the designated position, and the sampling container body 501 collects samples of the designated water body, and the first light motor 406 is remotely controlled to rotate in the reverse direction, so that the rope 408 is shortened by a certain distance; After the rope 408 is released to a certain extent, the first light motor 406 keeps power supply, and the hull moves on the water surface as a whole. The sampling container body 501 and the conical counterweight 502 drag the rope roller 405 during the movement, so that the device shell 401 overcomes the pre-tension of the spring telescopic rod 407, and moves downward in the first through groove 302. At this time, the protrusion 305 moves upward relative to the bottomless shell 4022, pushing up the limit slider 4045, and the limit slider 4045 moves upward. Then, the rod body 4049 is driven to move upward near one end of the sliding shaft 4046, so that the rod body 4049 and the L-shaped rod body 4042 rotate around the central axis of the sleeve body 4041, and then the semicircular fixed sleeve 4043 is brought close to the two ends of the rope winding roller 405. When the tooth 4048 is stuck in the tooth grooves at both ends of the rope winding roller 405, the first light motor 406 stops supplying power. At this time, during the long-term movement of the entire device, the release length of the rope 408 remains unchanged, that is, the position of the water quality sampling container 5 remains unchanged.

[0034] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In general, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can creatively design a structure and implementation method similar to the technical solution, which should fall within the protection scope of the present invention.

Claims

1. A mobile water quality sampler for water quality detection, comprising a floating airbag (1), two fixed frames (2) at both ends of two floating airbags (1) arranged side by side, and a support plate (3) between the two fixed frames (2), characterized in that: Four evenly distributed rope control devices (4) are provided on the support plate (3), a liftable water quality sampling container (5) is provided at the bottom of the rope control device (4), and an integrated light-weight paddle-rudder device (6) is fixedly mounted at the rear end of the support plate (3).

2. A mobile water quality sampler for water quality testing according to claim 1, characterized in that: The support plate (3) comprises a hollow plate body (301), and four evenly distributed first through slots (302) for installing the rope control device (4) are provided in the hollow plate body (301). The rope control device (4) can move up and down in the first through slots (302).

3. A mobile water quality sampler for water quality detection according to claim 2, characterized in that: The rope control device (4) comprises a device housing (401), wherein two opposite ends of the device housing (401) are provided with limit housings (402), the limit housing (402) comprises a bottomless housing (4022) fixedly mounted on the device housing (401), a second through slot (4023) is provided on a side of the bottomless housing (4022) away from the device housing (401), and a third through slot (4021) communicating with the bottomless housing (4022) is provided on the device housing (401).

4. A mobile water quality sampler for water quality testing according to claim 3, characterized in that: A rope reel (405) having a tooth groove at the end is provided inside the device housing (401), a rope (408) is provided on the rope reel (405), the tail end of the rope (408) is fixedly connected to the water quality sampling container (5), a first light motor (406) connected to the rope reel (405) is provided outside the device housing (401), shafts (403) are provided on both sides of the rope reel (405), and locking components (404) that can control the length of the rope (408) are rotatably connected to the two shafts (403).

5. A mobile water quality sampler for water quality testing according to claim 4, characterized in that: The locking assembly (404) comprises a sleeve (4041) rotatably connected to the shaft (403); a rod (4049) is provided on one side of the sleeve (4041) close to the limiting housing (402); a slide groove (4044) is provided on one end of the rod (4049) away from the sleeve (4041); a slide shaft (4046) is provided in the slide groove (4044) and can slide and rotate in the slide groove (4044); an end of the rod (4049) away from the sleeve (4041) can move in the second through groove (4023); and both ends of the slide shaft (4046) are rotatably connected to the limiting slider. (4045), a limit slider (4045) can move up and down on both sides inside the bottomless shell (4022), a spring (4047) is provided between the top of the limit slider (4045) and the inner wall of the bottomless shell (4022), an L-shaped rod body (4042) is provided on the side of the sleeve (4041) close to the rope winding roller (405), a semicircular fixing sleeve (4043) is provided on the end of the L-shaped rod body (4042) away from the sleeve (4041), and teeth (4048) matching with the tooth grooves at both ends of the rope winding roller (405) are provided inside the semicircular fixing sleeve (4043).

6. A mobile water quality sampler for water quality testing according to claim 5, characterized in that: A first protruding edge (303) is provided at the bottom of the first through slot (302), second protruding edges (409) corresponding to the first protruding edge (303) are provided on both sides of the device shell (401), a spring telescopic rod (407) is provided between the second protruding edge (409) and the first protruding edge (303), and a slide rail (304) slidably connected to two bottomless shells (4022) is provided in the first through slot (302), a limiting platform (306) is provided at the bottom of the slide rail (304), and a protrusion (305) that can slide in the bottomless shell (4022) is provided on the limiting platform (306).

7. A mobile water quality sampler for water quality testing according to claim 1, characterized in that: The integrated lightweight propeller and rudder device (6) comprises an L-shaped mounting plate (601) fixedly mounted on the rear end of the support plate (3); an extension mounting frame (602) is provided on the vertical plate of the L-shaped mounting plate (601); a worm gear (605) is rotatably connected to the extension mounting frame (602); a worm (608) cooperating with the worm gear (605) is provided on the extension mounting frame (602); one end of the worm gear (608) is connected to a micro motor; and the bottom of the worm gear (605) is fixedly connected to a motor that is connected to the extension mounting frame (605). 02) rotatably connected, a driving motor (603) is provided on the transverse plate of the L-shaped mounting plate (601), a universal transmission assembly (604) is provided between the driving motor (603), the worm gear (605) and the L-shaped cylinder (606), a blade (609) connected to the universal transmission assembly (604) is provided at one end of the L-shaped cylinder (606) away from the extension mounting frame (602), and an L-shaped rudder (607) is fixedly connected to the outer arc wall of the L-shaped cylinder (606).

8. A mobile water quality sampler for water quality testing according to claim 7, characterized in that: The universal transmission assembly (604) comprises three double-headed transmission shafts (6041) connected via universal joints, wherein the middle double-headed transmission shaft (6041) is rotationally connected to the worm gear (605), and the upper double-headed transmission shaft (6041) is universally connected to an input shaft (6042), and the input shaft (6042) is connected to the drive motor (603).

9. A mobile water quality sampler for water quality testing according to claim 8, characterized in that: The double-headed transmission shaft (6041) at the bottom is located in the L-shaped cylinder (606), and one end of the double-headed transmission shaft (6041) at the bottom, which is away from the double-headed transmission shaft (6041) in the middle, is universally connected to an output shaft (6043), and the output shaft (6043) is rotationally connected to the L-shaped cylinder (606), and one end of the output shaft (6043) exposed from the L-shaped cylinder (606) is connected to the blade (609).

Citation Information

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