Water quality sampling and detecting equipment

Abstract

The invention relates to the field of water quality detection equipment, in particular to water quality sampling detection equipment. The device is used for meeting the requirement that the water quality sampling and detecting device can sample and detect different depths of a river in all seasons. The water quality sampling detection equipment comprises a water pumping detection unit, a casting unit and a buoy sampling unit; the buoy sampling unit comprises a buoy, a balancing weight, a water pumping pipe and a limiting ring; one end of the water pumping pipe is connected with the balancing weight, the other end of the water pumping pipe is communicated with the water pumping detection unit, the limiting ring is installed on the water pumping pipe in a sliding mode, the buoy is sleeved on the water pumping pipe in a penetrating mode and slides between the limiting ring and the balancing weight, and the casting unit enables the buoy and the balancing weight to be cast into water. When the balancing weight reaches a set depth, the water quality detection module extracts a water sample to be detected through the water pumping pipe and detects the water sample. Through the arrangement, the water quality sampling and detecting equipment can be used for sampling and detecting rivers at different depths in different seasons, and the problem that the water quality sampling and detecting equipment is poor in flexibility and applicability is solved.

Description

Technical Field

[0001] The present invention relates to the field of water quality testing equipment, and in particular to a water quality sampling and testing equipment. Background Art

[0002] In today's era, monitoring and protecting the ecological environment is the basis for maintaining ecological balance and the key to ensuring sustainable development. As rivers are an important part of the ecological environment and a key carrier of water resources, it is very important to monitor the water quality of rivers. Therefore, there are equipment for testing river water quality to monitor water quality changes in real time over a long period of time, and then dynamically track the health of the river ecosystem in order to ensure the sustainable use of water resources and the stability of the ecological environment.

[0003] The invention patent with the publication number CN118883878B specifically discloses an integrated floating water quality monitoring device, including a float, the float is an annular structure with a hollow interior, an inner box body is embedded in the middle of the float, and a plurality of hollow columns are vertically arranged in the inner box body; a telescopic component, the telescopic component is installed on the upper side of the hollow column, a water quality sensor is connected to the telescopic component, and the telescopic component is used to drive the water quality sensor to telescope in the hollow column; through the telescopic component, the water quality sensor can be extended into the water body to perform water quality detection on the water body. However, the water quality detection of rivers often requires sampling and detection at different depths of the river in different seasons, but this integrated floating water quality monitoring device can only perform fixed-depth water quality detection on the river by fixed-point deployment. Not only that, in winter, the device may not work properly due to ice on the surface of the river.

[0004] To sum up, the problem with existing water quality sampling and testing equipment is that in the long-term real-time river water quality monitoring process, it is difficult to meet the sampling and testing needs of rivers at different depths in different seasons, which limits the flexibility and applicability of water quality sampling and testing equipment. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a water quality sampling and testing equipment with high applicability and strong flexibility, so as to meet the actual needs of the water quality sampling and testing equipment for sampling and testing at different depths of the river in various seasons.

[0006] In order to achieve the above-mentioned object and other related objects, the present invention provides a water quality sampling and testing device, the water quality sampling and testing device comprising: Launch pad; A water pumping detection unit, the water pumping detection unit comprises a water quality detection module and a water pump, and the water outlet of the water pump is connected to the water quality detection module; A projectile unit, the projectile unit comprising a projectile power source and an impact sleeve, the impact sleeve is slidably mounted on the launch platform, and the projectile power source drives the impact sleeve to slide on the launch platform; A float sampling unit, the float sampling unit includes a float, a fixed block, a counterweight, a water suction pipe, a projectile guide pipe, a limit ring and a locking module; one end of the water suction pipe is fixedly connected to the counterweight, the other end of the water suction pipe passes through the projectile guide pipe and the impact sleeve and is connected to the water inlet of the water pump, the limit ring is slidably installed on the water suction pipe, the locking module can lock the sliding of the limit ring, the float is sleeved on the water suction pipe, the float slides between the limit ring and the counterweight, the buoyancy of the float is greater than the gravity of the counterweight, and the limit ring is adjusted by The distance between the ring and the counterweight block is adjusted to adjust the distance between the counterweight block and the float and then adjust the depth of the counterweight block entering the water. The fixed block is fixedly installed on the float, and the projectile guide tube is installed on the launching platform. The axis of the projectile guide tube is the same as the axis of the impact sleeve. The float and the counterweight block are located in the projectile guide tube. The projectile power source drives the impact sleeve to hit the fixed block so that the float and the counterweight block are projected from the projectile guide tube into the river. When the counterweight block reaches the set depth, the water pump draws the water sample to be tested into the water quality detection module through the suction pipe for detection.

[0007] As an optional solution, the water quality sampling and testing equipment includes a first rotational power source and a rotating base; The launching platform is rotatably mounted on a rotating base, the rotating axis of the launching platform is perpendicular to the sliding direction of the impact sleeve, and the first rotating power source drives the launching platform to rotate.

[0008] As an optional solution, the water quality sampling and testing equipment further includes a second rotational power source and a fixed base; The rotating base is rotatably mounted on the fixed base, the rotating axis of the rotating base is perpendicular to the rotating axis of the launching platform, and the second rotating power source drives the rotating base to rotate.

[0009] As an optional solution, the projectile power source includes an air compressor, a projectile cylinder, a gas proportional valve and an air pipe; The ejection cylinder is fixedly mounted on the launching platform, and an impact sleeve is fixedly mounted on the telescopic end of the ejection cylinder, and the sliding direction of the telescopic end of the ejection cylinder is parallel to the sliding direction of the impact sleeve; One end of the air pipe is connected to the air compressor, and the other end of the air pipe is connected to the ejection cylinder; The gas proportional valve is fixedly installed on the air pipe, and the gas proportional valve is located between the air compressor and the projectile cylinder. The gas proportional valve adjusts the sliding speed of the movable end of the projectile cylinder by adjusting the gas flow rate flowing into the projectile cylinder.

[0010] As an optional solution, the locking module includes a limiting channel, a guide groove, a moving ring, an unlocking block, an annular spring sheet and a button; The inner wall of the limiting ring is a limiting channel; There are two annular spring pieces, which are located in the limiting channel and fixedly mounted at both ends of the limiting channel. A circular array of inwardly inclined inverted teeth is provided on the annular spring piece, and the diameter of the circle formed by the inner walls of the inverted teeth is smaller than the diameter of the water pumping pipe. There are two movable rings, the inner diameter of which is larger than the diameter of the water pumping pipe, the movable ring is concentrically arranged with the limiting ring, and the movable ring is slidably installed in the limiting channel. The movable ring slides to open the inverted teeth outwards and to make the inverted teeth break away from the outer wall of the water pumping pipe; A guide groove is provided on the inner wall of the limiting ring, the guiding direction of the guide groove is parallel to the axis of the limiting channel, one end of the unlocking block is fixedly connected to the side wall of the moving ring, the other end of the unlocking block is slidably connected to the guide groove, and the unlocking block is provided with a wedge surface at one end located in the guide groove; One end of the button slides through the side wall of the limiting ring, and the other end of the button is located in the guide groove. A wedge-shaped surface matching the unlocking block is provided on one end of the button located in the guide groove. The sliding direction of the button is perpendicular to the sliding direction of the unlocking block. The wedge-shaped surface of the button will push the unlocking block to slide and then cause the moving ring to slide.

[0011] As an optional solution, the end of the counterweight is tapered.

[0012] As an optional solution, the water quality sampling and testing equipment also includes a reel, a third rotation power source, a through hole, a rotary adapter and a connection port; The reel is rotatably mounted on the launching platform, and the rotation axis of the reel is perpendicular to the sliding direction of the impact sleeve; One end of the drum is a power end, the third rotation power source is fixedly mounted on the launching platform, and the output shaft of the third rotation power source is connected to the power end of the drum; The other end of the reel is a connecting end, a cavity is arranged inside the reel, and a connecting port concentric with the reel is arranged through the connecting end of the reel, and the connecting port is connected to the cavity; The rotary adapter comprises a rotary end and a fixed end, the rotary end is rotatably connected at the connection port, and the rotary axis of the rotary end coincides with the rotary axis of the reel; The water pumping pipe comprises a first connecting section and a second connecting section, one end of the first connecting section is connected to the water inlet of the water pump, and the other end of the first connecting section is connected to the fixed end of the rotary adapter; A through hole connected to the inside of the cavity is provided on the side wall of the reel, the second connecting section is rolled up on the reel, one end of the second connecting section passes through the through hole and connects to the cavity, and the other end of the second connecting section is fixedly connected to the counterweight block.

[0013] As an optional solution, the water quality sampling and testing equipment further includes a positioning unit and a clamping unit; The clamping unit comprises a clamping cylinder and a clamping block; The number of the clamping cylinders is two, the two clamping cylinders are arranged opposite to each other, the clamping cylinders are fixedly mounted on the launching platform, and the extension direction of the clamping cylinders is parallel to the sliding direction of the button; There are two clamping blocks, which are respectively fixedly mounted on the telescopic ends of two clamping cylinders. The clamping cylinders drive the clamping blocks to clamp the outer wall of the limit ring and press the button. The clamping block is located between the impact sleeve and the reel; The positioning unit comprises a blocking cylinder, a blocking block and an avoidance hole; There are two blocking cylinders, which are arranged opposite to each other, and are fixedly mounted on the launching platform, and the extension direction of the blocking cylinder is perpendicular to the sliding direction of the impact sleeve; There are two blocking blocks, which are respectively fixedly mounted on the telescopic ends of the two blocking cylinders. The blocking cylinders drive the blocking blocks to block the end faces of the limiting rings. The blocking block is provided with an avoidance hole, the diameter of which is larger than the diameter of the water pumping pipe and smaller than the diameter of the limiting ring. When the blocking block blocks the end face of the limiting ring, the avoidance hole does not affect the movement of the water pumping pipe. The blocking block is located between the clamping unit and the reel.

[0014] As an optional solution, the water quality sampling and testing equipment further includes a guide rail, a slider, a spring, a guide rod, an impact block, a fixing plate and an impact hole; The guide rail is fixedly mounted on the launching platform, and the guiding direction of the guide rail is parallel to the sliding direction of the impact sleeve; The guide rod is fixedly mounted on the launching platform, and the guiding direction of the guide rod is parallel to the guiding direction of the guide rail; The slider is slidably mounted on the guide rail and passes through the guide rod; The spring is sleeved on the guide rod, one end of the spring is against the launching platform, and the other end of the spring is against the slider; The impact block is fixedly mounted in the middle of the impact sleeve, and the diameter of the impact block is larger than the diameter of the impact sleeve; The projectile guide tube is fixedly mounted on the slide block, and the projectile guide tube is located in front of the impact sleeve; The fixing plate is fixedly mounted on one end of the projectile guide tube close to the impact sleeve, and an impact hole is opened on the fixing plate. The diameter of the impact hole is smaller than the diameter of the impact block, and the diameter of the impact hole is larger than the impact sleeve.

[0015] As an optional solution, the float is an annular structure, the inner wall diameter of the float is larger than the outer wall diameter of the counterweight, the fixed block is fixedly installed at one end of the float close to the limiting ring, and the fixed block is penetrated by a hole smaller than the diameter of the limiting ring and larger than the diameter of the pumping pipe, and the diameter of the hole is smaller than the diameter of the counterweight.

[0016] As described above, a water quality sampling and testing device of the present invention has at least the following beneficial effects: 1. The present application is provided with a float, a counterweight, a water pumping pipe, a limit ring and a locking module. The distance between the limit ring and the counterweight can be adjusted by the locking module, and then the distance between the float and the counterweight can be adjusted, so that the counterweight can reach different depths of the river, thereby expanding the sampling range and improving the accuracy of river water quality detection; 2. The present application provides a launching platform, a rotating base, a first rotating power source and a second rotating power source, so that the launching platform can be rotated in two directions, and the counterweight block and the water pumping pipe can be projected to various positions of the river, and the counterweight block can adjust the angle of entry into the water, thereby further expanding the sampling range of different positions of the river and improving the accuracy and flexibility of water quality detection; 3. The present application sets a counterweight block, and the end of the counterweight block is conical. When the river surface is frozen in winter, the counterweight block can obtain higher potential energy by adjusting the ejection angle of the launch platform, which is convenient for the counterweight block to break the ice, thereby expanding the applicability of the water quality sampling and testing equipment in winter; 4. This application improves the automation efficiency of the water quality sampling and testing equipment by setting up a clamping cylinder, a clamping block, a limit ring, a locking module and a button. During the process of winding and releasing the water pumping pipe, the limit ring is clamped and the button is pressed to unlock the locking module to automatically adjust the distance between the limit ring and the counterweight block. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the water quality sampling and testing equipment of the present invention; Figure 2 Shown is a schematic diagram of the top view of the water quality sampling and testing device of the present invention; Figure 3 Shown is a cross-sectional view of the structure of the float, counterweight, limit ring and locking module of the present invention; Figure 4 Shown as the present invention Figure 3 The structural diagram at A in the middle; Figure 5 Shown is an exploded schematic diagram of a limit ring and a locking module of the present invention; Figure 6 Shown is a structural cross-sectional view of the water quality sampling and testing equipment of the present invention; Figure 7 It is a schematic structural diagram of the reel, the third rotation power source and the counting unit of the present invention; Figure 8 It is a schematic diagram showing the structure of the clamping unit and the positioning unit of the present invention; Fig. 9 It is a schematic diagram showing the structure of the clamping cylinder or the blocking cylinder of the present invention; Fig.10 It is a schematic diagram showing the structure of the projectile guide tube and the impact sleeve of the present invention; In the figure: 1. launching platform; 2. pumping detection unit; 3. ejection unit; 4. float sampling unit; 5. first rotating power source; 6. rotating base; 7. second rotating power source; 8. fixed base; 9. reel; 10. third rotating power source; 11. through hole; 12. connection port; 13. rotating adapter; 14. clamping unit; 15. positioning unit; 16. guide rail; 17. slider; 18. spring; 19. guide rod; 20. impact block; 21. fixed plate; 22. impact hole; 23. electromagnetic clutch; 24. electromagnetic brake; 25. counting roller; 26. encoder; 201. Water quality detection module; 202. Water pump; 301. Projectile power source; 302. Impact sleeve; 401. Float; 402. Fixed block; 403. Counterweight block; 404. Water pumping pipe; 405. Projectile guide pipe; 406. Limiting ring; 407. Locking module; 1401. First pneumatic finger cylinder; 1402. First L-shaped clamping block; 1403. Second L-shaped clamping block; 1501. Second pneumatic finger cylinder; 1502. First L-shaped blocking block; 1503. Second L-shaped blocking block; 1504. Avoidance hole; 3011. Air compressor; 3012. Projectile cylinder; 3013. Gas proportional valve; 4071. Limiting channel; 4072. Guide groove; 4073. Moving ring; 4074. Unlocking block; 4075. Annular spring; 4076. Button. DETAILED DESCRIPTION

[0018] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0019] See also Figures 1 to 10 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0020] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0021] In this embodiment, please refer to Figures 1 to 6 The present invention provides a water quality sampling and testing device, which comprises: Launch platform 1; A water pumping detection unit 2, wherein the water pumping detection unit 2 comprises a water quality detection module 201 and a water pump 202, wherein a water outlet of the water pump 202 is connected to the water quality detection module 201; Here, the water quality detection module 201 includes a water pipe, a drain pipe, a drain valve, a manual valve, a detection box and a water quality detection sensor. The detection box is also connected to a drain pipe, and a drain valve is fixedly installed on the drain pipe. The water outlet of the water pump 202 is connected to the inside of the detection box through the water pipe. The manual valve is fixedly installed on the water pipe. The manual valve is located between the detection box and the water pump 202. The water quality detection sensor is fixedly installed on the upper end surface of the detection box. The water quality detection sensor has one end of the sensor penetrating into the inside of the detection box. Here, there is no limitation on the type of water quality detection sensor, which may be a pH sensor or a conductivity sensor; Here, the model of the water quality detection sensor may be BSK-EC-100 of the Bingsheng brand; Here, there is no limit on the number of water quality detection sensors; The ejection unit 3 includes an ejection power source 301 and an impact sleeve 302. The impact sleeve 302 is slidably mounted on the launch platform 1. The ejection power source 301 drives the impact sleeve 302 to slide on the launch platform 1. Here, the form of the projectile power source 301 is not limited, and can be a spring compression form or a gas compression form. In this embodiment, the gas compression form is adopted; The projectile power source 301 includes an air compressor 3011, a projectile cylinder 3012, a gas proportional valve 3013 and an air pipe; Here, the air compressor 3011 is a device that delivers air to the projectile cylinder 3012 by compressing air and increasing the air pressure. The air compressor 3011 is in the form of a self-contained air tank. The model of the air compressor 3011 may be Otusi 30L-S1100; The ejection cylinder 3012 is fixedly mounted on the launching platform 1, and the impact sleeve 302 is fixedly mounted on the telescopic end of the ejection cylinder 3012, and the sliding direction of the telescopic end of the ejection cylinder 3012 is parallel to the sliding direction of the impact sleeve 302; One end of the air pipe is connected to the air compressor 3011, and the other end of the air pipe is connected to the ejection cylinder 3012; The gas proportional valve 3013 is fixedly installed on the air pipe. The gas proportional valve 3013 is located between the air compressor 3011 and the ejection cylinder 3012. The gas proportional valve 3013 adjusts the sliding speed of the movable end of the ejection cylinder 3012 by adjusting the gas flow rate flowing into the ejection cylinder 3012. With this arrangement, the air compressor 3011 is first opened to compress the gas during projectile ejection, and the gas proportional valve 3013 is in a closed state at this time. When projectile ejection is required, the gas proportional valve 3013 is opened to extend the movable end of the projectile cylinder 3012 and drive the impact sleeve 302 to slide. By adjusting the air pressure or flow ratio of the gas proportional valve 3013 to adjust the initial velocity of the movable end of the projectile cylinder 3012 and then adjust the velocity of the impact sleeve 302, the gas proportional valve 3013 can enable the water quality sampling and testing equipment to have different projectile forces.

[0022] Here, the projectile power source 301 may also be in the form of a compression spring; The ejection power source 301 includes a screw module, an electromagnet, a compression block, a compression spring and an ejection cylinder; The ejection cylinder is fixedly mounted on the launching platform 1, and a spring cavity for accommodating a compression spring is provided inside the ejection cylinder. The impact sleeve 302 is slidably mounted in the spring cavity, and one end of the impact sleeve 302 is located inside the spring cavity, and the other end of the impact sleeve 302 slides out of the ejection cylinder; The compression spring is located in the spring cavity, one end of the compression spring abuts against the inner wall of the ejection cylinder, and the other end of the compression spring abuts against one end of the impact sleeve 302 located in the spring cavity; The screw module is fixedly mounted on the launching platform 1, and the sliding direction of the movable end of the screw module is parallel to the sliding direction of the impact sleeve 302; The electromagnet is fixedly mounted on the movable end of the screw module, and the electromagnet is a push-pull electromagnet, and the sliding direction of the movable end of the electromagnet is perpendicular to the sliding direction of the impact sleeve 302; The compression block is fixedly mounted on the movable end of the electromagnet, and the compression block contacts one end of the impact sleeve 302 at the initial position, and the end of the impact sleeve 302 in contact with the compression block is located between the compression block and the compression spring; With this arrangement, during projectile firing, the compression block on the movable end of the screw module first contacts one end of the impact sleeve 302, and when the movable end of the screw module moves toward the direction of the compression spring, the compression block drives the impact sleeve 302 to compress the compression spring. When projectile firing is required, the electromagnet is energized to cause the compression block to slide and break away from contact with the impact sleeve 302. At this time, the impact sleeve 302 slides due to the elastic force generated by the deformation of the compression spring, and the compression amount of the compression spring is adjusted by the movable distance of the movable end of the screw module, thereby adjusting the firing speed and force of the impact sleeve 302. With this arrangement, the compression amount of the compression spring can be intuitively observed and adjusted, thereby adjusting the firing force, and the electromagnet firing form makes the operation easier.

[0023] The float sampling unit 4 includes a float 401, a fixed block 402, a counterweight 403, a water pumping pipe 404, a projectile guide pipe 405, a limit ring 406 and a locking module 407; one end of the water pumping pipe 404 is fixedly connected to the counterweight 403, and the other end of the water pumping pipe 404 passes through the projectile guide pipe 405 and the impact sleeve 302 and is connected to the water inlet of the water pump 202. The limit ring 406 is slidably installed on the water pumping pipe 404, and the locking module 407 can lock the sliding of the limit ring 406. The float 401 is inserted into the water pumping pipe 404, and the float 401 slides between the limit ring 406 and the counterweight 403. The buoyancy of the float 401 is greater than the gravity of the counterweight 403. By adjusting The distance between the limiting ring 406 and the counterweight 403 is used to adjust the distance between the counterweight 403 and the float 401, thereby adjusting the depth of the counterweight 403 entering the water. The fixed block 402 is fixedly installed on the float 401, and the projectile guide tube 405 is installed on the launching platform 1. The axis of the projectile guide tube 405 is the same as the axis of the impact sleeve 302. The float 401 and the counterweight 403 are located in the projectile guide tube 405. The projectile power source 301 drives the impact sleeve 302 to hit the fixed block 402 so that the float 401 and the counterweight 403 are projected from the projectile guide tube 405 into the river. When the counterweight 403 reaches the set depth, the water pump 202 draws the water sample to be tested into the water quality detection module 201 through the pumping pipe 404 for detection; Here, the fixing block 402 is made of a rigid material so as to provide more elastic potential energy for the float 401 by impacting the sleeve 302. The fixing block 402 may be an iron block; Here, the diameter of the inner wall of the impact sleeve 302 is larger than the diameter of the limiting ring 406; Through this arrangement, the distance between the limit ring 406 and the counterweight 403 is adjusted, and then the distance between the float 401 and the counterweight 403 is adjusted, so that the counterweight 403 can reach different depths of the river, thereby expanding the sampling range and improving the accuracy of river water quality detection; The float 401 is an annular structure, the inner wall diameter of the float 401 is larger than the outer wall diameter of the counterweight 403, the fixed block 402 is fixedly installed at one end of the float 401 close to the limiting ring 406, and a hole smaller than the diameter of the limiting ring 406 and larger than the diameter of the water pumping pipe 404 is formed through the fixed block 402, and the diameter of the hole is smaller than the diameter of the counterweight 403; Through this arrangement, after continuously reeling in the water suction pipe 404, the float 401 first slides into the projection guide tube 405, and the counterweight block 403 then slides into the float 401 and no longer moves toward the reel 9 following the water suction pipe 404, so as to facilitate the next impact projection of the impact sleeve 302.

[0024] In this embodiment, please refer to Figures 3 to 5 The locking module 407 includes a limiting channel 4071, a guide groove 4072, a moving ring 4073, an unlocking block 4074, an annular spring piece 4075 and a button 4076; The inner wall of the limiting ring 406 is a limiting channel 4071; There are two annular spring pieces 4075, which are located in the limiting channel 4071 and fixedly mounted at both ends of the limiting channel 4071. A circular array of inwardly inclined inverted teeth is provided on the annular spring piece 4075, and the diameter of the circle formed by the inner walls of the inverted teeth is smaller than the diameter of the water pumping pipe 404. There are two movable rings 4073, the inner diameter of which is larger than the diameter of the water pumping pipe 404, and the movable ring 4073 is concentrically arranged with the limiting ring 406. The movable ring 4073 is slidably installed in the limiting channel 4071, and the movable ring 4073 slides to open the inverted teeth outwards and to make the inverted teeth disengage from the outer wall of the water pumping pipe 404; A guide groove 4072 is provided on the inner wall of the limiting ring 406, and the guiding direction of the guide groove 4072 is parallel to the axis of the limiting channel 4071. One end of the unlocking block 4074 is fixedly connected to the side wall of the moving ring 4073, and the other end of the unlocking block 4074 is slidably connected to the guide groove 4072. The unlocking block 4074 is provided with a wedge surface at one end located in the guide groove 4072. One end of the button 4076 slides through the side wall of the limiting ring 406, and the other end of the button 4076 is located in the guide groove 4072. A wedge-shaped surface matching the unlocking block 4074 is provided on one end of the button 4076 located in the guide groove 4072. The sliding direction of the button 4076 is perpendicular to the sliding direction of the unlocking block 4074. The wedge-shaped surface of the button 4076 pushes the unlocking block 4074 to slide, thereby causing the moving ring 4073 to slide. Here, the two annular spring pieces 4075 at both ends of the limiting channel 4071 are arranged in different directions. Figure 4 , with the upper end of the limiting ring 406 as the upper reference, and the lower end of the limiting ring 406 as the lower reference, one of the annular spring pieces 4075 is installed at the upper end of the limiting channel 4071 with the inwardly inclined inverted teeth facing upward; the other annular spring piece 4075 is installed at the lower end of the limiting channel 4071 with the inwardly inclined inverted teeth facing downward; when the diameter of the circle formed by the inner walls of the inverted teeth is smaller than the diameter of the water pumping pipe 404, the two annular spring pieces 4075 will lock the outer wall of the water pumping pipe 404 from two directions, thereby locking the limiting ring 406 The movable rings 4073 move up and down on the water pumping pipe 404. In this embodiment, there are two movable rings 4073. When the button 4076 is pressed, the button 4076 pushes the unlocking block 4074 to slide so that the inverted teeth are opened outward, thereby allowing the limiting ring 406 to slide on the water pumping pipe 404. When the button 4076 is released, the movable ring 4073 will automatically reset due to the elastic force generated by the deformation of the inverted teeth, and the unlocking blocks 4074 on the two movable rings 4073 will squeeze the button 4076 to extend out of the limiting ring 406. Through this arrangement, the limiting ring 406 can slide a fixed distance on the water pumping pipe 404, and the operation is simple and the positioning is accurate, which makes it easy to set the water immersion depth of the counterweight block 403.

[0025] In this embodiment, please refer to Figure 1 and Figure 6 , the water quality sampling and testing equipment comprises a first rotation power source 5 and a rotating base 6; The launching platform 1 is rotatably mounted on a rotating base 6, and the rotation axis of the launching platform 1 is perpendicular to the sliding direction of the impact sleeve 302, and the first rotating power source 5 drives the launching platform 1 to rotate; The water quality sampling and testing equipment also includes a second rotation power source 7 and a fixed base 8; The rotating base 6 is rotatably mounted on the fixed base 8, the rotating axis of the rotating base 6 is perpendicular to the rotating axis of the launching platform 1, and the second rotating power source 7 drives the rotating base 6 to rotate; Here, the air compressor 3011 is fixedly mounted on the fixed base 8, the water pump 202 is fixedly mounted on the fixed base 8, and the detection box is fixedly mounted on the fixed base 8; Here, in the present embodiment, the water quality sampling and testing equipment further includes a first reducer and a second reducer, the first rotating power source 5 and the second rotating power source 7 are both motors, the first rotating power source 5 is fixedly mounted on the rotating base 6, the axis of the output shaft of the first rotating power source 5 is perpendicular to the sliding direction of the impact sleeve 302, the first rotating power source 5 is connected to the launching platform 1 through the first reducer, the first reducer provides a greater torque for the first rotating power source 5, the first rotating power source 5 is responsible for adjusting the elevation angle of the launching platform 1, the second rotating power source 7 is fixedly mounted on the fixed base 8, the second rotating power source 7 is connected to the rotating base 6 through the second reducer, the second rotating power source 7 is responsible for adjusting the angle of the launching platform 1 facing the river; the second reducer provides a greater torque for the second rotating power source 7; This arrangement allows the launch platform 1 to rotate in two directions, making it easy to adjust the direction and elevation of the launch platform 1, so as to achieve the purpose of projecting the counterweight 403 and the pumping pipe 404 to various positions in the river, and to facilitate the adjustment of the angle at which the counterweight 403 enters the water, thereby further expanding the sampling range at different positions in the river and improving the accuracy and flexibility of water quality detection.

[0026] In this embodiment, please refer to Figure 3 , the end of the counterweight block 403 is tapered; Here, a chamber is provided inside the counterweight block 403, and small holes penetrating the chamber are evenly provided on the outer wall of the counterweight block 403, and one end of the water pumping pipe 404 is connected to the chamber of the counterweight block 403; Here, the side wall circumferential array of the counterweight block 403 is fixedly mounted with fork teeth; Through this arrangement, when winter comes, the elevation angle of the launch platform 1 can be adjusted to make the counterweight 403 have more gravitational potential energy. Combined with the conical design of the front end of the counterweight 403, it will provide greater pressure on the ice surface and thus provide a better ice-breaking effect. The conical end of the counterweight 403 can also reduce a certain amount of air resistance in the air. The fork teeth can make the counterweight 403 better inserted into the ice layer, and the ice layer can be cut by retracting the counterweight 403.

[0027] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 7The water quality sampling and testing device further includes a reel 9, a third rotation power source 10, a through hole 11, a rotary adapter 13 and a connection port 12; The reel 9 is rotatably mounted on the launching platform 1, and the rotation axis of the reel 9 is perpendicular to the sliding direction of the impact sleeve 302; One end of the reel 9 is a power end, the third rotating power source 10 is fixedly mounted on the launching platform 1, and the output shaft of the third rotating power source 10 is connected to the power end of the reel 9; The other end of the reel 9 is a connection end, a cavity is provided inside the reel 9, and a connection port 12 which is concentric with the reel 9 is provided through the connection end of the reel 9, and the connection port 12 is connected to the cavity; The rotary adapter 13 includes a rotary end and a fixed end, the rotary end is rotatably connected to the connection port 12, and the rotary axis of the rotary end coincides with the rotary axis of the reel 9; The water pumping pipe 404 includes a first connecting section and a second connecting section, one end of the first connecting section is connected to the water inlet of the water pump 202, and the other end of the first connecting section is connected to the fixed end of the rotary adapter 13; Here, the water pumping pipe 404 can be rolled up on the reel 9, and the outer wall of the water pumping pipe 404 has a certain hardness, and the inner space of the water pumping pipe 404 will not be compressed when the water pumping pipe 404 is rolled up on the reel 9; Here, there is no limitation on the type of the water pumping pipe 404, which may be a PVC fiber reinforced hose or a metal hose; Here, a bearing is installed inside the rotating end of the rotating adapter 13, and the rotating end of the rotating adapter 13 can effectively prevent the first connecting section from rotating with the reel 9 and winding around the water pump 202, thereby damaging the water pump 404 itself and the water inlet of the water pump 202; A through hole 11 connected to the inside of the cavity is provided on the side wall of the reel 9, the second connecting section is rolled up on the reel 9, one end of the second connecting section passes through the through hole 11 and connects to the cavity, and the other end of the second connecting section is fixedly connected to the counterweight 403; Here, the water quality sampling and testing equipment also includes an electromagnetic clutch 23, a power source support plate and an electromagnetic brake 24; The power source support plate is fixedly mounted on the outer wall of the launch platform 1; The third rotating power source 10 is fixedly mounted on the power source support plate, and an electromagnetic clutch 23 is fixedly connected to the output shaft of the third rotating power source 10; The electromagnetic clutch 23 is fixedly mounted on the power source support plate, the electromagnetic clutch 23 is fixedly connected to the power end of the reel 9, the axis of the power end of the reel 9 coincides with the rotation axis of the reel 9, and the electromagnetic clutch 23, the power end of the reel 9 and the third rotation power source 10 are concentrically arranged; The electromagnetic brake 24 is fixedly connected to the connecting end of the reel 9, the axis of the connecting end of the reel 9 coincides with the rotation axis of the reel 9, and the electromagnetic brake 24 is fixedly mounted on the side wall of the launching platform 1; Here, the electromagnetic clutch 23 is a device that realizes the engagement and separation of the reel 9 and the output shaft of the third rotation power source 10 by relying on the action of electromagnetic force; Here, the electromagnetic clutch 23 can separate the connection between the output shaft of the third rotating power source 10 and the reel 9. When casting the float 401, the third rotating power source 10 can be idled first, and then the electromagnetic clutch 23 connects the third rotating power source 10 to the reel 9, thereby reducing the resistance of the reel 9 to the output shaft of the third rotating power source 10 at the moment of casting and reducing the equipment damage of the third rotating power source 10. Here, the electromagnetic brake 24 is a device that uses electromagnetic force to achieve a braking function. Its working principle is based on the law of electromagnetic induction and friction, so that the connecting end of the reel 9 stops rotating due to the friction, thereby braking the reel 9; Here, when the ejection length reaches the requirement, the electromagnetic clutch 23 can be separated from the third rotation power source 10 and the reel 9 and the electromagnetic brake 24 can be started at the same time. The electromagnetic brake 24 will brake the reel 9 to reach the limit of the length of the water pumping pipe 404, thereby limiting the range of this sampling test. Through this arrangement, the reel 9 will not increase the resistance during projectile when the water quality sampling and testing equipment is projected, and the length of the water suction pipe 404 can be set by braking the reel 9 when setting the sampling range, so that the worker's operation is simple and the water quality sampling and testing equipment has high stability.

[0028] Here, the water quality sampling and testing equipment also includes a counting unit; The counting unit includes a counting roller 25, a driving synchronous wheel, a driven synchronous wheel, a synchronous belt, an encoder support plate and an encoder 26; The counting roller 25 is rotatably mounted on the launching platform 1, the rotation axis of the counting roller 25 is parallel to the rotation axis of the winding drum 9, one end of the counting roller 25 is a connecting shaft, the axis of the connecting shaft of the counting roller 25 coincides with the axis of the counting roller 25, the connecting shaft of the counting roller 25 passes through and extends out of the side wall of the launching platform 1, and the connecting shaft of the counting roller 25 is located on the same side as the power end of the winding drum 9; The active synchronous wheel is fixedly mounted on the power end of the reel 9, and the axis of the active synchronous wheel coincides with the axis of the reel 9. The driven synchronous wheel is fixedly mounted on the connecting shaft of the counting roller 25, and the axis of the driven synchronous wheel coincides with the axis of the connecting shaft of the counting roller 25. The synchronous belt connects the driving synchronous wheel and the driven synchronous wheel; The encoder support plate is fixedly mounted on the side wall of the launch platform 1; The input shaft of the encoder 26 is fixedly connected to the connecting shaft of the counting roller 25, and the encoder 26 is fixedly mounted on the encoder support plate; Through this arrangement, when the reel 9 rotates, it will drive the active synchronous wheel to rotate, and the active synchronous wheel will drive the driven synchronous wheel to rotate through the synchronous belt, and the non-synchronous belt wheel will drive the counting roller 25 to rotate. For example, if the size of the active synchronous wheel and the driven synchronous wheel are equal, the reel 9 rotates one circle and the counting roller 25 also rotates one circle; if the size of the active synchronous wheel and the driven synchronous wheel is 2:1, the reel 9 rotates one circle and the counting roller 25 rotates two circles; the rotation of the counting roller 25 allows the encoder 26 to convert it into an electrical signal according to the number of rotations of the counting roller 25, and then deduce the length of the pumping pipe 404 thrown out or retracted. The encoder 26 can make the sampling range and projection distance of the water quality sampling and detection equipment more accurate.

[0029] In this embodiment, please refer to Figure 2 , Figure 6 , Figure 8 and Fig. 9 , the water quality sampling and testing equipment also includes a positioning unit 15 and a clamping unit 14; The clamping unit 14 includes a clamping cylinder and a clamping block; The number of the clamping cylinders is two, the two clamping cylinders are arranged opposite to each other, the clamping cylinders are fixedly mounted on the launching platform 1, and the extension direction of the clamping cylinders is parallel to the sliding direction of the button 4076; There are two clamping blocks, which are respectively fixedly mounted on the telescopic ends of two clamping cylinders. The clamping cylinders drive the clamping blocks to clamp the outer wall of the limit ring 406 and press the button 4076. The clamping block is located between the impact sleeve 302 and the reel 9; Here, in this embodiment, a first pneumatic finger cylinder 1401 can be used to replace the two clamping cylinders. Fig. 9In the form of a special cylinder, two telescopic ends are relatively slidably installed on the first pneumatic finger cylinder 1401, the sliding direction of the two telescopic ends of the first pneumatic finger cylinder 1401 is parallel to the sliding direction of the button 4076, and the two telescopic ends of the first pneumatic finger cylinder 1401 slide synchronously relative to each other, the first pneumatic finger cylinder 1401 is fixedly installed on the launching platform 1 and is located below the water pumping pipe 404, and the two clamping blocks are respectively a first L-shaped clamping block 1402 and a second L-shaped clamping block 1403, and the first L-shaped clamping block 1402 and the second L-shaped clamping block 1403 are relatively fixedly installed on the first pneumatic finger cylinder 1401; the horizontal end of the first L-shaped clamping block 1402 is fixed to one telescopic end of the first pneumatic finger cylinder 1401 The vertical end of the first L-shaped clamping block 1402 clamps the outer wall of the limit ring 406; the horizontal end of the second L-shaped clamping block 1403 is fixedly connected to the other telescopic end of the first pneumatic finger cylinder 1401, and the vertical end of the second L-shaped clamping block 1403 clamps the outer wall of the limit ring 406; when the two telescopic ends of the first pneumatic finger cylinder 1401 are close to each other, the diameter of the clamping space surrounded by the first L-shaped clamping block 1402 and the second L-shaped clamping block 1403 is less than or equal to the diameter of the limit ring 406, and the button 4076 is pressed into the limit ring 406 at this time, and when the two telescopic ends of the first pneumatic finger cylinder 1401 are away from each other, the first L-shaped clamping block 1402 and the second L-shaped clamping block 1403 no longer clamp the limit ring 406; Here, the model of the first pneumatic finger cylinder 1401 may be HFD20X20 of AirTac; The positioning unit 15 includes a blocking cylinder, a blocking block and an avoidance hole 1504; There are two blocking cylinders, which are arranged opposite to each other. The blocking cylinders are fixedly mounted on the launching platform 1, and the extension direction of the blocking cylinders is perpendicular to the sliding direction of the impact sleeve 302. There are two blocking blocks, which are respectively fixed on the telescopic ends of the two blocking cylinders. The blocking cylinders drive the blocking blocks to block the end surface of the limiting ring 406. The blocking block is provided with an avoidance hole 1504, the diameter of which is larger than the diameter of the water pumping pipe 404 and smaller than the diameter of the limiting ring 406. When the blocking block blocks the end face of the limiting ring 406, the avoidance hole 1504 does not affect the movement of the water pumping pipe 404. The blocking block is located between the clamping unit 14 and the reel 9; Here, in this embodiment, a second pneumatic finger cylinder 1501 can be used to replace the two blocking cylinders. The second pneumatic finger cylinder 1501 adopts Fig. 9The second pneumatic finger cylinder 1501 is in the form of a special cylinder, two telescopic ends are relatively slidably installed on the second pneumatic finger cylinder 1501, the sliding direction of the two telescopic ends of the second pneumatic finger cylinder 1501 is perpendicular to the sliding direction of the impact sleeve 302, and the two telescopic ends of the second pneumatic finger cylinder 1501 slide synchronously relative to each other, the second pneumatic finger cylinder 1501 is fixedly installed on the launching platform 1 and is located below the water pumping pipe 404, the first L-shaped blocking block 1502 and the second L-shaped blocking block 1503 are relatively fixedly installed on the second pneumatic finger cylinder 1501; the horizontal end of the first L-shaped blocking block 1502 is fixedly connected to a telescopic end of the second pneumatic finger cylinder 1501, and the vertical end of the first L-shaped blocking block 1502 blocks the end face of the limit ring 406; the horizontal end of the second L-shaped blocking block 1503 is fixedly connected to the second pneumatic finger cylinder 1 The other telescopic end of 501 is fixedly connected, and the vertical end of the second L-shaped blocking block 1503 blocks the end face of the limiting ring 406; the first L-shaped blocking block 1502 and the second L-shaped blocking block 1503 are respectively provided with equal semicircular avoidance holes 1504, when the two telescopic ends of the second pneumatic finger cylinder 1501 are close to each other, the diameter of the circular hole surrounded by the two semicircular avoidance holes 1504 on the first L-shaped blocking block 1502 and the second L-shaped blocking block 1503 is larger than the diameter of the water pumping pipe 404 and smaller than the diameter of the limiting ring 406, at this time, the limiting ring 406 will be blocked at the first L-shaped blocking block 1502 and the second L-shaped blocking block 1503, when the two telescopic ends of the second pneumatic finger cylinder 1501 are away from each other, the first L-shaped blocking block 1502 and the second L-shaped blocking block 1503 will not block the movement of the limiting ring 406; Here, the model of the second pneumatic finger cylinder 1501 may be HFD20X20 of AirTac; Through this arrangement, the first L-shaped clamping block 1402 and the second L-shaped clamping block 1403 clamp the outer wall of the limit ring 406 and press the button 4076 to make the unlocking block 4074 push the movable ring 4073 to open the inverted teeth outward. At this time, the limit ring 406 and the water suction pipe 404 can slide relative to each other. Such an arrangement can automatically unlock the limit ring 406 and the locking module 407, thereby improving the automation efficiency of the water quality sampling and detection equipment.

[0030] In this embodiment, please refer to Figure 2 and Fig.10 , the water quality sampling and testing equipment also includes a guide rail 16, a slider 17, a spring 18, a guide rod 19, an impact block 20, a fixing plate 21 and an impact hole 22; The guide rail 16 is fixedly mounted on the launching platform 1, and the guiding direction of the guide rail 16 is parallel to the sliding direction of the impact sleeve 302; The guide rod 19 is fixedly mounted on the launch platform 1, and the guiding direction of the guide rod 19 is parallel to the guiding direction of the guide rail 16; The slider 17 is slidably mounted on the guide rail 16 and passes through the guide rod 19; The spring 18 is sleeved on the guide rod 19, one end of the spring 18 abuts against the launching platform 1, and the other end of the spring 18 abuts against the slider 17; The impact block 20 is fixedly mounted in the middle of the impact sleeve 302, and the diameter of the impact block 20 is larger than the diameter of the impact sleeve 302; The projectile guide tube 405 is fixedly mounted on the slider 17, and the projectile guide tube 405 is located in front of the impact sleeve 302; The fixing plate 21 is fixedly mounted on one end of the projectile guide tube 405 close to the impact sleeve 302, and an impact hole 22 is opened on the fixing plate 21. The diameter of the impact hole 22 is smaller than the diameter of the impact block 20, and the diameter of the impact hole 22 is larger than the impact sleeve 302; Here, after the water pumping tube 404 is continuously reeled in, the float 401 will first slide into the projection guide tube 405, and the float 401 will be fixed in the projection guide tube 405 and will no longer move toward the reel 9; Here, the guide rail 16, the slider 17, the spring 18 and the guide rod 19 are combined into a buffer mechanism. In this embodiment, there are two groups of buffer mechanisms, which are relatively mounted on the launching platform 1. The two groups of buffer mechanisms are located in front of the impact sleeve 302. The projectile guide tube 405 is fixedly mounted on the two sliders 17. When the float 401 is projected, the impact sleeve 302 first impacts the fixed block 402 through the impact hole 22, and then the impact block 20 impacts the projectile guide tube 405. The projectile guide tube 405 drives the slider 17 to squeeze the spring 18, and the elastic force generated by the deformation of the spring 18 is used for buffering. Through this arrangement, a buffer force is provided to the impact sleeve 302, so that the impact sleeve 302 will not directly hit the launching platform 1 due to excessive firing speed, causing damage to the cylinder, thereby improving the stability and service life of the equipment.

[0031] The specific usage of this embodiment is as follows: The working order of the water quality sampling and testing equipment is to first take water samples from the deep water layer and then gradually reduce the sampling depth until sampling is carried out in the shallow water layer. For the convenience of description, an example is given below. When sampling and testing the river at 10 meters, 5 meters and 2 meters, the first ejection is an adjustment ejection. The staff first adjusts the angle and elevation of the launching platform 1 facing the river, starts the electromagnetic clutch 23 to make the third rotating power source 10 idle, and then turns on the air compressor 3011 to compress the gas and adjust the gas flow to a suitable range through the gas proportional valve 3013 to determine the speed of the ejection cylinder 3012. At this time, the clamping cylinder continues to clamp the limit ring 406, and starts the ejection cylinder 3012 to drive the impact sleeve 302 to hit the fixed block 4. 02, the fixed block 402 drives the float 401 and the counterweight 403 to fly into the air, and the length of the water pumping pipe 404 is calculated according to the number of circles of the counting roller 25 counted by the encoder 26. The electromagnetic brake 24 is started when the water pumping pipe 404 flies out 20 meters according to the ejection range. At this time, the total length of the thrown water pumping pipe 404 is 20 meters. The water pumping pipe 404 is reeled in until the length of the external water pumping pipe 404 is 10 meters of the first sampling depth, and the clamping of the clamping cylinder is released. The limit ring 406 moves with the water pumping pipe 404 and the distance from the counterweight 403 is 10 meters. When the reel 9 retracts the float 401 into the ejection guide tube 405 and the counterweight 403 into the float 401, the reeling is stopped at this time to prepare for the second ejection; The second ejection, start the ejection cylinder 3012 to drive the impact sleeve 302 to hit the fixed block 402, when the pumping pipe 404 flies out 20 meters, start the electromagnetic brake 24, at this time the total length of the pumping pipe 404 thrown out is 20 meters, the distance between the float 401 and the counterweight 403 is 10 meters, the sampling depth is 10 meters, start the water pump 202 to pump the water sample at this depth into the detection box for water quality detection, after the water quality detection, the water sample is discharged from the detection box, at this time, the pumping pipe 404 is rolled up by the reel 9, and the blocking air is started. The cylinder positions the limit ring 406, starts the clamping cylinder to clamp the limit ring 406 and presses the button 4076, and continues to reel in the water pumping pipe 404 until the length of the external water pumping pipe 404 is 5 meters of the second sampling depth, releases the blocking of the blocking cylinder and the clamping of the clamping cylinder, and the limit ring 406 moves with the water pumping pipe 404 and is 5 meters away from the counterweight 403. When the reel 9 retracts the float 401 into the projection guide tube 405 and the counterweight 403 is retracted into the float 401, stop reeling and prepare for the third projection; For the third casting, the steps of the second casting are repeated to carry out a 5-meter water quality test. When the test is completed, the water pumping pipe 404 is reeled in by the reel 9, the blocking cylinder positioning limit ring 406 is started, the clamping cylinder clamping limit ring 406 is started and the button 4076 is pressed, and the water pumping pipe 404 is continued to be reeled in until the length of the external water pumping pipe 404 is 2 meters of the third sampling depth, the blocking of the blocking cylinder and the clamping of the clamping cylinder are released, the limit ring 406 moves with the water pumping pipe 404 and the distance from the counterweight 403 is 5 meters. When the reel 9 retracts the float 401 into the casting guide tube 405 and the counterweight 403 is retracted into the float 401, the reeling is stopped at this time to prepare for the fourth casting; For the fourth casting, repeat the second casting step to perform a 2-meter water quality test. When the water quality test is completed, prepare to reset the equipment, reel in the water pumping pipe 404, start the blocking cylinder positioning limit ring 406, start the clamping cylinder clamping limit ring 406 and press the button 4076 until the float 401 is retracted into the casting guide tube 405 and the counterweight 403 is retracted into the float 401. The overall reset of the water quality sampling and testing equipment is completed; If it is winter, a larger elevation angle can be adjusted by adjusting the first rotating power source 5, and the firing speed of the projectile cylinder 3012 can be adjusted by adjusting the gas proportional valve 3013 so that the counterweight block 403 has more potential energy to break the ice.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A water quality sampling and testing device, characterized in that: The water quality sampling and testing equipment comprises: Launch pad; A water pumping detection unit, the water pumping detection unit comprises a water quality detection module and a water pump, and the water outlet of the water pump is connected to the water quality detection module; A projectile unit, the projectile unit comprising a projectile power source and an impact sleeve, the impact sleeve is slidably mounted on the launch platform, and the projectile power source drives the impact sleeve to slide on the launch platform; A float sampling unit, the float sampling unit includes a float, a fixed block, a counterweight, a water suction pipe, a projectile guide pipe, a limit ring and a locking module; one end of the water suction pipe is fixedly connected to the counterweight, the other end of the water suction pipe passes through the projectile guide pipe and the impact sleeve and is connected to the water inlet of the water pump, the limit ring is slidably installed on the water suction pipe, the locking module can lock the sliding of the limit ring, the float is sleeved on the water suction pipe, the float slides between the limit ring and the counterweight, the buoyancy of the float is greater than the gravity of the counterweight, and the limit ring is adjusted by The distance between the ring and the counterweight block is adjusted to adjust the distance between the counterweight block and the float and then adjust the depth of the counterweight block entering the water. The fixed block is fixedly installed on the float, and the projectile guide tube is installed on the launching platform. The axis of the projectile guide tube is the same as the axis of the impact sleeve. The float and the counterweight block are located in the projectile guide tube. The projectile power source drives the impact sleeve to hit the fixed block so that the float and the counterweight block are projected from the projectile guide tube into the river. When the counterweight block reaches the set depth, the water pump draws the water sample to be tested into the water quality detection module through the suction pipe for detection.

2. A water quality sampling and testing device according to claim 1, characterized in that: The water quality sampling and testing equipment comprises a first rotational power source and a rotating base; The launching platform is rotatably mounted on a rotating base, the rotating axis of the launching platform is perpendicular to the sliding direction of the impact sleeve, and the first rotating power source drives the launching platform to rotate.

3. A water quality sampling and testing device according to claim 2, characterized in that: The water quality sampling and testing equipment also includes a second rotational power source and a fixed base; The rotating base is rotatably mounted on the fixed base, the rotating axis of the rotating base is perpendicular to the rotating axis of the launching platform, and the second rotating power source drives the rotating base to rotate.

4. A water quality sampling and testing device according to claim 1, characterized in that: The projectile power source includes an air compressor, a projectile cylinder, a gas proportional valve and an air pipe; The ejection cylinder is fixedly mounted on the launching platform, and an impact sleeve is fixedly mounted on the telescopic end of the ejection cylinder, and the sliding direction of the telescopic end of the ejection cylinder is parallel to the sliding direction of the impact sleeve; One end of the air pipe is connected to the air compressor, and the other end of the air pipe is connected to the ejection cylinder; The gas proportional valve is fixedly installed on the air pipe, and the gas proportional valve is located between the air compressor and the projectile cylinder. The gas proportional valve adjusts the sliding speed of the movable end of the projectile cylinder by adjusting the gas flow rate flowing into the projectile cylinder.

5. A water quality sampling and testing device according to claim 1, characterized in that: The locking module includes a limiting channel, a guide groove, a moving ring, an unlocking block, an annular spring sheet and a button; The inner wall of the limiting ring is a limiting channel; There are two annular spring pieces, which are located in the limiting channel and fixedly mounted at both ends of the limiting channel. A circular array of inwardly inclined inverted teeth is provided on the annular spring piece, and the diameter of the circle formed by the inner walls of the inverted teeth is smaller than the diameter of the water pumping pipe. There are two movable rings, the inner diameter of which is larger than the diameter of the water pumping pipe, the movable ring is concentrically arranged with the limiting ring, and the movable ring is slidably installed in the limiting channel. The movable ring slides to open the inverted teeth outwards and to make the inverted teeth break away from the outer wall of the water pumping pipe; A guide groove is provided on the inner wall of the limiting ring, the guiding direction of the guide groove is parallel to the axis of the limiting channel, one end of the unlocking block is fixedly connected to the side wall of the moving ring, the other end of the unlocking block is slidably connected to the guide groove, and the unlocking block is provided with a wedge surface at one end located in the guide groove; One end of the button slides through the side wall of the limiting ring, and the other end of the button is located in the guide groove. A wedge-shaped surface matching the unlocking block is provided on one end of the button located in the guide groove. The sliding direction of the button is perpendicular to the sliding direction of the unlocking block. The wedge-shaped surface of the button will push the unlocking block to slide and then cause the moving ring to slide.

6. A water quality sampling and testing device according to claim 1, characterized in that: The end of the counterweight is tapered.

7. A water quality sampling and testing device according to claim 1, characterized in that: The water quality sampling and testing equipment also includes a reel, a third rotation power source, a through hole, a rotary adapter and a connection port; The reel is rotatably mounted on the launching platform, and the rotation axis of the reel is perpendicular to the sliding direction of the impact sleeve; One end of the drum is a power end, the third rotation power source is fixedly mounted on the launching platform, and the output shaft of the third rotation power source is connected to the power end of the drum; The other end of the reel is a connecting end, a cavity is arranged inside the reel, and a connecting port concentric with the reel is arranged through the connecting end of the reel, and the connecting port is connected to the cavity; The rotary adapter comprises a rotary end and a fixed end, the rotary end is rotatably connected at the connection port, and the rotary axis of the rotary end coincides with the rotary axis of the reel; The water pumping pipe comprises a first connecting section and a second connecting section, one end of the first connecting section is connected to the water inlet of the water pump, and the other end of the first connecting section is connected to the fixed end of the rotary adapter; A through hole connected to the inside of the cavity is provided on the side wall of the reel, the second connecting section is rolled up on the reel, one end of the second connecting section passes through the through hole and connects to the cavity, and the other end of the second connecting section is fixedly connected to the counterweight block.

8. A water quality sampling and testing device according to claim 7, characterized in that: The water quality sampling and testing equipment also includes a positioning unit and a clamping unit; The clamping unit comprises a clamping cylinder and a clamping block; The number of the clamping cylinders is two, the two clamping cylinders are arranged opposite to each other, the clamping cylinders are fixedly mounted on the launching platform, and the extension direction of the clamping cylinders is parallel to the sliding direction of the button; There are two clamping blocks, which are respectively fixedly mounted on the telescopic ends of two clamping cylinders. The clamping cylinders drive the clamping blocks to clamp the outer wall of the limit ring and press the button. The clamping block is located between the impact sleeve and the reel; The positioning unit comprises a blocking cylinder, a blocking block and an avoidance hole; There are two blocking cylinders, which are arranged opposite to each other, and are fixedly mounted on the launching platform, and the extension direction of the blocking cylinder is perpendicular to the sliding direction of the impact sleeve; There are two blocking blocks, which are respectively fixedly mounted on the telescopic ends of the two blocking cylinders. The blocking cylinders drive the blocking blocks to block the end faces of the limiting rings. The blocking block is provided with an avoidance hole, the diameter of which is larger than the diameter of the water pumping pipe and smaller than the diameter of the limiting ring. When the blocking block blocks the end face of the limiting ring, the avoidance hole does not affect the movement of the water pumping pipe. The blocking block is located between the clamping unit and the reel.

9. A water quality sampling and testing device according to claim 1, characterized in that: The water quality sampling and testing equipment also includes a guide rail, a slider, a spring, a guide rod, an impact block, a fixing plate and an impact hole; The guide rail is fixedly mounted on the launching platform, and the guiding direction of the guide rail is parallel to the sliding direction of the impact sleeve; The guide rod is fixedly mounted on the launching platform, and the guiding direction of the guide rod is parallel to the guiding direction of the guide rail; The slider is slidably mounted on the guide rail and passes through the guide rod; The spring is sleeved on the guide rod, one end of the spring is against the launching platform, and the other end of the spring is against the slider; The impact block is fixedly mounted in the middle of the impact sleeve, and the diameter of the impact block is larger than the diameter of the impact sleeve; The projectile guide tube is fixedly mounted on the slide block, and the projectile guide tube is located in front of the impact sleeve; The fixing plate is fixedly mounted on one end of the projectile guide tube close to the impact sleeve, and an impact hole is opened on the fixing plate. The diameter of the impact hole is smaller than the diameter of the impact block, and the diameter of the impact hole is larger than the impact sleeve.

10. A water quality sampling and testing device according to claim 1, characterized in that: The float is an annular structure, the inner wall diameter of the float is larger than the outer wall diameter of the counterweight, the fixed block is fixedly installed at one end of the float close to the limiting ring, and a hole smaller than the diameter of the limiting ring and larger than the diameter of the water pump is penetrated through the fixed block, and the diameter of the hole is smaller than the diameter of the counterweight.

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