A meteorological monitoring precipitation sampler

Abstract

This invention relates to a meteorological monitoring precipitation sampler, belonging to the technical field of precipitation sampling equipment. It includes a housing, a water receiving tray at the top of the housing, a rotating assembly inside the housing, and several sampling bottles on the bottom surface of the housing. The top of the housing has several first water inlets. The rotating assembly includes a fixed shaft vertically fixed to the center of the housing, a central rotating plate above the fixed shaft, a connecting sleeve at the bottom of the central rotating plate and rotatably fitted onto the top of the fixed shaft, a drain hole eccentrically located on the central rotating plate, and a first drainage cylinder fixedly connected to the bottom of the central rotating plate corresponding to the drain hole. A gravity rotation mechanism is provided between the fixed shaft and the connecting sleeve. The sampling bottles are evenly distributed around the fixed shaft. This invention solves the problem that existing sampling equipment requires power and is unsuitable for field working environments.

Description

Technical Field

[0001] This invention relates to a meteorological monitoring precipitation sampler, belonging to the technical field of precipitation sampling equipment. Background Technology

[0002] In the field of meteorological monitoring, precipitation sample collection is an essential step and plays a crucial role in the monitoring process. Existing rainwater collection devices are generally very simple in structure, using common collection containers such as beakers for direct collection. However, the drawbacks of this approach are obvious. For example, time-based rainwater collection requires entirely manual assistance. Especially since rainwater collection usually takes place in field environments, it causes numerous inconveniences for staff. Currently, there is a lack of corresponding solutions or equipment to address these problems.

[0003] To address the aforementioned technical issues, a search revealed a mechanical time-sharing rainwater collection device disclosed in Chinese Patent Publication No. CN217111659U. The key technical features include: a base with a motor centrally mounted on it, the motor's output shaft perpendicular to the base, and the output shaft being power-connected to a rainwater cover; a rainwater collection funnel integrally mounted on the rainwater cover at its edge; support rods on the base surrounding the motor in a spaced array, with a beaker holder at the end of each support rod; and the beaker holder corresponding to the rainwater collection funnel.

[0004] The above scheme uses a motor-driven rotating cover plate in conjunction with a funnel to collect samples in different time periods. However, it still has significant drawbacks in practical applications: relying on the motor for continuous power supply is difficult to guarantee in the field environment, and the insufficient positioning accuracy of the rotating mechanism can easily cause sample mixing.

[0005] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a meteorological monitoring precipitation sampler, which solves the problem that the sampling equipment in the prior art needs to be powered and is not suitable for field working environments.

[0007] The technical problem to be solved by this invention is achieved by the following technical solution:

[0008] A meteorological precipitation sampler includes a housing, a water receiving tray on the top of the housing, a rotating assembly inside the housing, and a plurality of sampling bottles on the bottom surface inside the housing. The top of the housing has a plurality of first water inlets. The rotating assembly includes a fixed shaft fixedly connected vertically to the middle of the housing, a central rotating plate located above the fixed shaft, a connecting sleeve located at the bottom of the central rotating plate and rotatably sleeved on the top of the fixed shaft, a drain hole eccentrically opened on the central rotating plate, and a first drain tube fixedly connected to the bottom of the central rotating plate and corresponding to the drain hole. A gravity rotation mechanism is provided between the fixed shaft and the connecting sleeve. The plurality of sampling bottles are evenly distributed around the fixed shaft.

[0009] The present invention is further configured as follows: a rotating plate is provided below the turntable; a first limiting ring is fixedly connected to the fixed shaft; the rotating plate is located above the first limiting ring and is rotatably supported by the first limiting ring through a bearing; a second draining cylinder is provided on the top surface of the rotating plate corresponding to the first draining cylinder; the second draining cylinder is connected to the bottom surface of the rotating plate; a telescopic sleeve is fixedly connected between the first draining cylinder and the second draining cylinder; a liquid outlet is provided on the bottom surface of the rotating plate corresponding to the second draining cylinder; a telescopic rod is provided between the bottom surface of the turntable and the top surface of the rotating plate; the telescopic rod and the second draining cylinder are respectively located on both sides of the fixed shaft.

[0010] The present invention is further configured such that: the gravity rotation mechanism includes a track groove formed on the peripheral wall of the fixed shaft, and a guide member disposed on the inner wall of the connecting sleeve and slidably connected in the track groove;

[0011] The track groove includes several vertical grooves extending axially along the fixed shaft and several inclined grooves located one-to-one between two adjacent vertical grooves. The top of the inclined groove is connected to the bottom of the vertical groove, the bottom of the inclined groove is located below another vertical groove, the height of the top of the inclined groove in the axial direction of the fixed shaft is greater than the bottom of the inclined groove, the connection between the top of the inclined groove and the bottom of the vertical groove is smooth, and the depth of the bottom of the inclined groove is greater than the bottom of the other vertical groove.

[0012] The guide includes a receiving groove formed on the inner wall of the connecting sleeve and extending radially therefrom, a sliding block slidably inserted into the receiving groove, and a support spring disposed in the receiving groove and abutting against the sliding block. The sliding block is rhomboid in shape and made of magnetic material. A magnetic block is provided at the other end of the inclined groove. When the sliding block is located in the vertical groove, the two sides of the sliding block are respectively attached to the two side walls of the vertical groove. When the sliding block is located in the inclined groove, the top surface and bottom surface of the sliding block are respectively attached to the two side walls of the inclined groove.

[0013] An elastic element is provided between the rotating plate and the connecting sleeve. The elastic element includes a return spring sleeved on the fixed shaft and a second limiting ring fixedly connected to the top surface of the return spring. A bearing is provided between the second limiting ring and the connecting sleeve. The bottom end of the return spring abuts against the top surface of the rotating plate.

[0014] The present invention is further configured such that: a first valve body is provided between the water receiving tray and the intermediate transfer plate, and a second valve body is provided between the intermediate transfer plate and the rotating plate;

[0015] The first valve body includes an annular groove formed on the top surface of the rotary disc and extending circumferentially around the fixed axis, a rotating ring rotatably connected in the annular groove, a valve stem fixedly connected to the rotating ring and passing through the first water inlet hole in a vertical direction, and a sealing plate fixedly connected to the top of the valve stem. The sealing plate is spherical and its outer edge is bent downward. When the sliding block slides in the track groove, causing the connecting sleeve and the rotary disc to descend to the lowest position, the sealing plate closes the first water inlet hole.

[0016] The second valve body includes an elastic rod with its bottom end located inside the second drain tube and its top end extending above the drain hole, and a sealing block fixedly connected to the top end of the elastic rod. The elastic rod includes a sliding sleeve located inside the second drain tube, an extension rod slidably inserted into the sliding sleeve, and a fixing spring located inside the sliding sleeve and abutting against the extension rod. The drain hole opening is chamfered and a magnetic ring is provided at the chamfer. The sealing block is made of magnetic material. The sliding sleeve is fixedly connected to the inner wall of the second drain tube by several fixing rods.

[0017] The present invention is further configured such that: the peripheral wall of the turntable is provided with a plurality of first drainage holes, and the peripheral wall of the box is provided with a plurality of second drainage holes that correspond one-to-one with the first drainage holes in the vertical direction; when the sliding block slides in the track groove, causing the connecting sleeve and the turntable to descend to the lowest position, the first drainage holes and the second drainage holes are connected.

[0018] The present invention is further configured such that: a water storage tank is fixedly connected to the top of the box body; a second water inlet hole communicating with the water storage tank is opened at the bottom of the water receiving tray; a third valve body is provided at the bottom of the water storage tank; a retaining ring is fixedly connected to the top surface of the transfer plate; the water storage tank is located inside the retaining ring; the third valve body includes a valve pipe fixedly connected to the bottom of the water storage tank and closed at the top; a valve block slidably connected to the valve pipe; and a retaining spring disposed at the top of the valve pipe and abutting against the valve block at its bottom end; a through hole is opened at the bottom of the water storage tank corresponding to the valve pipe; and several through grooves are opened at the bottom end of the peripheral wall of the valve pipe; when the valve block is located at the bottom end of the valve pipe, the through hole and the through grooves are closed.

[0019] A connecting pipe is provided at the center of the turntable, and a top rod extending upward is provided at the center of the connecting pipe. When the sliding block slides in the track groove, driving the connecting sleeve and the turntable to the highest position, the top rod pushes the valve block to move and open the through groove. The outer wall of the first drainage cylinder is provided with an annular cavity, and the inner wall of the first drainage cylinder is provided with a plurality of flushing holes communicating with the annular cavity. The other end of the connecting pipe is connected to the annular cavity.

[0020] The present invention is further configured such that the inner diameter of the middle part of the connecting pipe is smaller than the inner diameters of both ends.

[0021] The present invention is further configured such that a filter layer is provided at the top of the water storage tank below the second water inlet.

[0022] The present invention is further configured such that: a buoyancy valve is provided at the mouth of the sampling bottle, the buoyancy valve includes an abutment ring fixedly connected to the mouth of the sampling bottle and a buoyancy block disposed below the abutment ring, the outer edge of the top of the buoyancy block is provided with a chamfer, the inner edge of the abutment ring is provided with a chamfer that cooperates with the buoyancy block, and the buoyancy block closes the mouth of the sampling bottle when it moves to abut against the abutment ring;

[0023] The sampling bottle is provided with a guide rod arranged along its axis. The bottom of the buoyancy block is fixedly connected to a guide sleeve that is slidably sleeved on the guide rod. Several connecting rods are fixedly connected between the bottom end of the guide rod and the inner wall of the sampling bottle.

[0024] The present invention is further configured such that: an overflow ring extending upward is provided at the opening of the first water inlet hole.

[0025] The beneficial effects of this invention are:

[0026] 1. Through the structural design of the gravity rotation mechanism, with the cooperation of the track groove and the guide component, the weight of the rainwater itself drives the diamond sliding block to slide along the vertical groove and the inclined groove in a circular motion, which forces the connecting sleeve to drive the central turntable to rotate and switch the sampling bottle; at the same time, the magnetic block at the end of the inclined groove attracts the sliding block to achieve precise positioning of the sampling bottle, and finally completes time-sharing automatic sampling under the condition of no external power supply.

[0027] 2. Through multi-stage valve linkage control, the first valve closes the first water inlet when the rotating plate is lowered to its lowest point, cutting off the current sampling, and stores water in the storage tank through the second water inlet; the second valve dynamically controls the opening and closing of the leakage hole through a magnetic sealing block, allowing water to enter only when the sampling bottles are aligned. At the same time, in this state, the water in the rotating plate is drained to the outside of the box through the first and second drainage holes, ensuring that the sampling is not excessive and extending the sampling cycle each time; combined with the dynamic sealing structure of the telescopic sleeve, the leakage of residual droplets in the drainage channel is blocked, ensuring that samples are collected independently at each time period and avoiding cross-contamination;

[0028] 3. The water storage tank and the third valve body are linked and triggered. When the turntable rises to the highest point, the push rod opens the valve block at the bottom of the water storage tank to release the stored water. The water flows through the flushing hole of the annular cavity to flush the inner wall of the first diversion tube in the opposite direction. At the same time, the filter layer intercepts impurities to ensure that the flushing water is clean, realizes the automatic cleaning of the diversion channel, and prevents residual contamination of subsequent samples.

[0029] 4. Through the design of overflow ring and drainage channel, the overflow ring at the first water inlet prevents rainwater backflow and ensures water collection efficiency; the first and second drainage holes between the turntable and the box are aligned at specific positions to discharge excess rainwater; combined with the all-mechanical transmission structure, the impact of temperature and humidity changes on the equipment is avoided, and the operational stability in complex field environments is significantly improved.

[0030] 5. Through the synergistic action of the buoyancy block and the guide structure, when the liquid level in the sampling bottle rises, the buoyancy block floats vertically upward under buoyancy, and its chamfer fits tightly with the abutment ring to seal the bottle mouth; the guide rod and guide sleeve restrict the buoyancy block to move only in the vertical direction, avoiding deviation that could lead to seal failure, thereby accurately controlling the sample capacity of a single bottle and preventing liquid overflow. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 This is an overall sectional view of the present invention.

[0033] Figure 3 yes Figure 2 A magnified view of part A in the middle.

[0034] Figure 4 This is a schematic diagram of the track groove section in this invention.

[0035] Figure 5 This is a schematic diagram of the guide component in this invention.

[0036] Figure 6 yes Figure 2 A magnified view of part B in the middle section.

[0037] Figure 7 This is a cross-sectional view of the sampling bottle portion of the present invention.

[0038] In the diagram: 1. Box body; 2. Water receiving tray; 3. Rotating assembly; 4. Sampling bottle; 5. First water inlet; 6. Overflow ring; 7. Fixed shaft; 8. Central turntable; 9. Connecting sleeve; 10. Leakage hole; 11. First drainage tube; 12. Gravity rotation mechanism; 13. Rotating plate; 14. First limiting ring; 15. Bearing; 16. Return spring; 17. Second limiting ring; 18. Second drainage tube; 19. Telescopic sleeve; 20. Dispensing nozzle; 21. Telescopic rod; 22. Track groove; 23. Guide component; 24. Vertical groove; 25. Inclined groove; 26. Storage groove; 27. Sliding block; 28. Support spring; 29. ​​Magnetic block; 30. First valve body; 31. Ring groove; 32. 33. Rotating ring; 34. Valve stem; 35. Sealing plate; 36. Second valve body; 37. Elastic rod; 38. Sealing block; 39. Sliding sleeve; 40. Extension rod; 41. Fixed spring; 42. Magnetic ring; 43. First drain hole; 44. Second drain hole; 45. Water tank; 46. Second inlet hole; 47. Filter layer; 48. Third valve body; 49. Retaining ring; 50. Valve pipe; 51. Valve block; 52. Abutment spring; 53. Through hole; 54. Through groove; 55. Connecting pipe; 56. Top rod; 57. Annular cavity; 58. Flushing hole; 59. Buoyancy valve; 60. Abutment ring; 61. Buoyancy block; 62. Guide rod; 63. Guide sleeve; 64. Connecting rod. Detailed Implementation

[0039] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific illustrations.

[0040] like Figures 1-7 As shown, a meteorological monitoring precipitation sampler includes a housing 1, a water receiving tray 2 set on the top of the housing 1, a rotating component 3 set inside the housing 1, and a plurality of sampling bottles 4 set on the bottom surface inside the housing 1. The top of the housing 1 has a plurality of first water inlets 5, wherein the opening of the first water inlet 5 is provided with an overflow ring 6 extending upward, and the overflow ring 6 at the first water inlet 5 prevents rainwater backflow and ensures water collection efficiency. Sampling ports (not shown in the figure) should be provided on the side wall or bottom of the housing 1.

[0041] The rotating assembly 3 includes a fixed shaft 7 fixedly connected to the middle of the box 1 in the vertical direction, a turntable 8 located above the fixed shaft 7, a connecting sleeve 9 set at the bottom of the turntable 8 and rotatably sleeved at the top of the fixed shaft 7, a water leakage hole 10 eccentrically opened on the turntable 8, and a first drainage tube 11 fixedly connected to the bottom of the turntable 8 and corresponding to the water leakage hole 10. A gravity rotation mechanism 12 is provided between the fixed shaft 7 and the connecting sleeve 9, and several sampling bottles 4 are evenly distributed around the fixed shaft 7.

[0042] A rotating plate 13 is provided below the central turntable 8. A first limiting ring 14 is fixedly connected to the fixed shaft 7. The rotating plate 13 is located above the first limiting ring 14 and is rotatably supported by the first limiting ring 14 through the bearing 15. An elastic element is provided between the rotating plate 13 and the connecting sleeve 9. The elastic element includes a return spring 16 sleeved on the fixed shaft 7 and a second limiting ring 17 fixedly connected to the top surface of the return spring 16. A bearing 15 is provided between the second limiting ring 17 and the connecting sleeve 9. The bottom end of the return spring 16 abuts against the top surface of the rotating plate 13.

[0043] A second drainage tube 18 is provided on the top surface of the rotating plate 13 corresponding to the first drainage tube 11. The second drainage tube 18 is connected to the bottom surface of the rotating plate 13. A telescopic sleeve 19 is fixedly connected between the first drainage tube 11 and the second drainage tube 18. A liquid outlet 20 is provided on the bottom surface of the rotating plate 13 corresponding to the position of the second drainage tube 18. A telescopic rod 21 is provided between the bottom surface of the central rotating plate 8 and the top surface of the rotating plate 13. The telescopic rod 21 and the second drainage tube 18 are located on both sides of the fixed shaft 7, respectively.

[0044] The gravity rotation mechanism 12 includes a track groove 22 formed on the periphery of the fixed shaft 7 and a guide member 23 disposed on the inner wall of the connecting sleeve 9 and slidably connected within the track groove 22. The track groove 22 includes a plurality of vertical grooves 24 extending axially along the fixed shaft 7 and a plurality of inclined grooves 25 corresponding to each other between two adjacent vertical grooves 24. The top of the inclined groove 25 is connected to the bottom of the vertical groove 24, and the bottom of the inclined groove 25 is located below another vertical groove 24. The height of the top of the inclined groove 25 in the axial direction of the fixed shaft 7 is greater than that of the bottom of the inclined groove 25. The top of the inclined groove 25 and the bottom of the vertical groove 24 are smoothly connected. The depth of the bottom of the inclined groove 25 is greater than that of the bottom of another vertical groove 24.

[0045] The guide member 23 includes a storage groove 26 formed in the inner wall of the connecting sleeve 9 and extending radially therein, a sliding block 27 slidably inserted into the storage groove 26, and a support spring 28 disposed in the storage groove 26 and abutting against the sliding block 27. The sliding block 27 is rhomboid in shape and made of magnetic material. A magnetic block 29 is provided at the other end of the inclined groove 25. When the sliding block 27 is located in the vertical groove 24, the two sides of the sliding block 27 are respectively attached to the two side walls of the vertical groove 24. When the sliding block 27 is located in the inclined groove 25, the top surface and bottom surface of the sliding block 27 are respectively attached to the two side walls of the inclined groove 25.

[0046] Through the structural design of the gravity rotation mechanism 12, with the cooperation of the track groove 22 and the guide 23, the weight of the rainwater itself drives the rhomboid sliding block 27 to slide cyclically along the vertical groove 24 and the inclined groove 25, forcing the connecting sleeve 9 to drive the central turntable 8 to rotate and switch the sampling bottle 4; at the same time, the magnetic block 29 at the end of the inclined groove 25 is used to attract the sliding block 27, so as to achieve precise positioning of the sampling bottle 4, and finally complete the time-sharing automatic sampling under the condition of no external power supply.

[0047] A first valve body 30 is provided between the water receiving tray 2 and the intermediate turntable 8. The first valve body 30 includes an annular groove 31 opened on the top surface of the intermediate turntable 8 and extending circumferentially around the fixed shaft 7, a rotating ring 32 rotatably connected in the annular groove 31, a valve stem 33 fixedly connected to the rotating ring 32 and passing through the first water inlet hole 5 in a vertical direction, and a sealing plate 34 fixedly connected to the top of the valve stem 33. The sealing plate 34 is spherical and its outer edge is bent downward. When the sliding block 27 slides in the track groove 22, driving the connecting sleeve 9 and the intermediate turntable 8 to the lowest position, the sealing plate 34 closes the first water inlet hole 5.

[0048] A second valve body 35 is provided between the turntable 8 and the rotating plate 13. The second valve body 35 includes an elastic rod 36 with its bottom end located inside the second diversion cylinder 18 and its top end extending above the drain hole 10, and a sealing block 37 fixedly connected to the top end of the elastic rod 36. The elastic rod 36 includes a sliding sleeve 38 located inside the second diversion cylinder 18, an extension rod 39 slidably inserted into the sliding sleeve 38, and a fixing spring 40 located inside the sliding sleeve 38 and abutting against the extension rod 39. The drain hole 10 has a chamfer at the opening and a magnetic ring 41 at the chamfer. The sealing block 37 is made of magnetic material. The sliding sleeve 38 is fixedly connected to the inner wall of the second diversion cylinder 18 by several fixing rods.

[0049] The circumferential wall of the turntable 8 is provided with a number of first drainage holes 42, and the circumferential wall of the box body 1 is provided with a number of second drainage holes 43 that correspond one-to-one with the first drainage holes 42 in the vertical direction. When the sliding block 27 slides in the track groove 22, driving the connecting sleeve 9 and the turntable 8 to the lowest position, the first drainage holes 42 and the second drainage holes 43 are connected.

[0050] Through the linkage control of multi-stage valve bodies, the first valve body 30 closes the first water inlet 5 when the rotating plate 8 is lowered to the lowest point, cutting off the current sampling, and stores water in the water storage tank 44 through the second water inlet 45; the second valve body 35 dynamically controls the opening and closing of the leakage hole 10 through the magnetic sealing block 37, allowing water to flow in only when the sampling bottle 4 is aligned. At the same time, in this state, the water in the rotating plate 8 is drained to the outside of the box 1 through the first drain hole 42 and the second drain hole 43, ensuring that the sampling is not excessive and extending the sampling cycle each time; combined with the dynamic sealing structure of the telescopic sleeve 19, the leakage of residual droplets in the drainage channel is blocked, ensuring that samples are collected independently at each time period and avoiding cross-contamination.

[0051] A water storage tank 44 is fixedly connected to the top of the tank 1. A second water inlet 45 communicating with the water storage tank 44 is opened at the bottom of the water receiving tray 2. An activated carbon filter layer 46 is provided at the top of the water storage tank 44 below the second water inlet. A third valve body 47 is provided at the bottom of the water storage tank 44. A retaining ring 48 is fixedly connected to the top surface of the central turntable 8. The water storage tank 44 is located inside the retaining ring 48. The third valve body 47 includes a valve pipe 49 fixedly connected to the bottom of the water storage tank 44 and closed at the top, a valve block 50 slidably connected to the valve pipe 49, and a retaining spring 51 located at the top of the valve pipe 49 and abutting the bottom end against the valve block 50. A through hole 52 is opened at the bottom of the water storage tank 44 corresponding to the valve pipe 49. Several through grooves 53 are opened at the bottom of the peripheral wall of the valve pipe 49. When the valve block 50 is located at the bottom end of the valve pipe 49, the through hole 52 and the through grooves 53 are closed.

[0052] A connecting pipe 54 is provided at the center of the turntable 8, and the inner diameter of the middle part of the connecting pipe 54 is smaller than the inner diameters at both ends. A top rod 55 extending upward is provided at the center of the connecting pipe 54. When the sliding block 27 slides in the track groove 22, driving the connecting sleeve 9 and the turntable 8 to the highest position, the top rod 55 pushes the valve block 50 to move and open the through groove 53. The outer wall of the first drainage cylinder 11 is provided with an annular cavity 56, and the inner wall of the first drainage cylinder 11 is provided with several flushing holes 57 communicating with the annular cavity 56. The other end of the connecting pipe 54 is connected to the annular cavity 56.

[0053] The water tank 44 is triggered in conjunction with the third valve body 47. When the turntable 8 rises to its highest point, the push rod 55 opens the bottom valve block 50 of the water tank 44 to release the stored water. The water flows through the flushing hole 57 of the annular cavity 56 to flush the inner wall of the first diversion tube 11 in the opposite direction. At the same time, the water flow is pressurized and accelerated by the Venturi tube configuration formed by the connecting pipe 54, which improves the cleaning effect. Meanwhile, the filter layer 46 intercepts impurities to ensure that the flushing water is clean, realizes the automatic cleaning of the diversion channel, and prevents residual contamination of subsequent samples.

[0054] A buoyancy valve 58 is provided at the mouth of the sampling bottle 4. The buoyancy valve 58 includes an abutment ring 59 fixedly connected to the mouth of the sampling bottle 4 and a buoyancy block 60 set below the abutment ring 59. The outer edge of the top of the buoyancy block 60 is chamfered, and the inner edge of the abutment ring 59 is chamfered to cooperate with the buoyancy block 60. When the buoyancy block 60 moves to abut against the abutment ring 59, it closes the mouth of the sampling bottle 4. To ensure the stability of the buoyancy valve 58, a guide rod 61 is provided inside the sampling bottle 4 along its axis. A guide sleeve 62 is fixedly connected to the bottom of the buoyancy block 60 and slidably sleeved on the guide rod 61. Several connecting rods 63 are fixedly connected between the bottom end of the guide rod 61 and the inner wall of the sampling bottle 4.

[0055] Through the coordinated action of the buoyancy block 60 and the guide structure, when the liquid level in the sampling bottle 4 rises, the buoyancy block 60 floats vertically upward under buoyancy, and its chamfer fits tightly with the abutment ring 59 to seal the bottle mouth; the guide rod 61 and the guide sleeve 62 restrict the buoyancy block 60 to move only in the vertical direction, avoiding deviation that could lead to sealing failure, thereby accurately controlling the sample capacity of a single bottle and preventing liquid overflow.

[0056] The implementation principle of this invention is as follows:

[0057] Time-sharing sampling is achieved by using the gravity rotation mechanism 12 driven by the weight of rainwater, and the entire process is completed unmanned by combining multi-stage valve linkage control and automatic cleaning system. Specifically, after rainwater enters the box 1 through the water receiving tray 2, it is injected into the central turntable 8 through the first water inlet 5. At this time, the diamond-shaped sliding block 27 slides down the vertical groove 24 in the track groove 22 of the fixed shaft 7, driving the connecting sleeve 9 to rotate. When the sliding block 27 slides into the end of the inclined groove 25, the magnetic block 29 attracts and locks the position, so that the central turntable 8 accurately positions the current sampling bottle 4. When the central turntable 8 reaches the lowest point, the first valve body 30 closes the first water inlet 5 to cut off the sampling. The rainwater in the water receiving tray 2 enters the water storage tank 44 through the second water inlet 45. The second valve body 35 opens the drain hole 10, and the telescopic sleeve 19 connects the first and second diversion tubes 18 to guide the water flow into the corresponding sampling bottle 4. Excess rainwater is discharged through the first drain hole 42 and the second drain hole 43.

[0058] When the water in the turntable 8 is emptied, the turntable 8 rises to the highest point of the vertical groove 24, and the top rod 55 triggers the water storage tank 44 to release the stored water. The water flows through the Venturi-type connecting pipe 54, is pressurized, and then backwashes the drainage channel. The filter layer 46 ensures the quality of the flushing water. The buoyancy valve 58 inside the sampling bottle 4 precisely seals the bottle opening through a guide structure, realizing single-bottle capacity control.

[0059] This solution achieves three major functions—time-sharing sampling, overflow prevention, and self-cleaning—through a purely mechanical structure. It ensures the timeliness, independence, and accuracy of sample collection in the field even without power, significantly extends the sampling cycle, and reduces the probability of cross-contamination during sampling.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A meteorological precipitation sampler, characterized in that: The device includes a housing (1), a water receiving tray (2) disposed on the top of the housing (1), a rotating assembly (3) disposed inside the housing (1), and several sampling bottles (4) disposed on the bottom surface inside the housing (1). The top of the housing (1) is provided with several first water inlets (5). The rotating assembly (3) includes a fixed shaft (7) fixedly connected to the middle part of the housing (1) in a vertical direction, a central rotating disk (8) located above the fixed shaft (7), and a rotating disk (8) disposed at the bottom of the central rotating disk (8). A connecting sleeve (9) fitted onto the top of the fixed shaft (7), a drain hole (10) eccentrically opened on the turntable (8), and a first drain tube (11) fixedly connected to the bottom of the turntable (8) and corresponding to the drain hole (10) are provided. A gravity rotation mechanism (12) is provided between the fixed shaft (7) and the connecting sleeve (9). Several sampling bottles (4) are evenly distributed around the fixed shaft (7). A rotating plate (13) is provided below the turntable (8). The fixed shaft (7) is fixedly connected to... A first limiting ring (14) is provided. The rotating plate (13) is located above the first limiting ring (14) and is rotatably supported on the first limiting ring (14) by a bearing (15). A second drain cylinder (18) is provided on the top surface of the rotating plate (13) corresponding to the first drain cylinder (11). The second drain cylinder (18) is connected to the bottom surface of the rotating plate (13). A telescopic sleeve (19) is fixedly connected between the first drain cylinder (11) and the second drain cylinder (18). The bottom of the rotating plate (13) A liquid outlet (20) is provided at the position corresponding to the second drainage tube (18). A telescopic rod (21) is provided between the bottom surface of the central turntable (8) and the top surface of the rotating plate (13). The telescopic rod (21) and the second drainage tube (18) are respectively located on both sides of the fixed shaft (7). The gravity rotation mechanism (12) includes a track groove (22) opened on the periphery of the fixed shaft (7) and a guide member (23) provided on the inner wall of the connecting sleeve (9) and slidably connected to the track groove (22). The track groove (22) includes several vertical grooves (24) extending axially along the fixed shaft (7) and several inclined grooves (25) corresponding to each other between two adjacent vertical grooves (24). The top of the inclined groove (25) is connected to the bottom of the vertical groove (24), and the bottom of the inclined groove (25) is located below the other vertical groove (24). The height of the top of the inclined groove (25) in the axial direction of the fixed shaft (7) is greater than that of the bottom of the inclined groove (25). The top of the inclined groove (25) and the bottom of the vertical groove (24) are smoothly connected. The depth of the bottom of the inclined groove (25) is greater than that of the bottom of the other vertical groove (24). The guide member (23) includes a storage groove (26) formed on the inner wall of the connecting sleeve (9) and extending radially therein, a sliding block (27) slidably inserted into the storage groove (26), and a support spring (28) disposed in the storage groove (26) and abutting against the sliding block (27). The sliding block (27) is rhomboid in shape and made of magnetic material. The other end of the inclined groove (25) is provided with a magnetic block (29). When the sliding block (27) is located in the vertical groove (24), the two sides of the sliding block (27) are respectively attached to the two side walls of the vertical groove (24). When the sliding block (27) is located in the inclined groove (25), the top surface and bottom surface of the sliding block (27) are respectively attached to the two side walls of the inclined groove (25). An elastic element is provided between the rotating plate (13) and the connecting sleeve (9). The elastic element includes a return spring (16) sleeved on the fixed shaft (7) and a second limiting ring (17) fixedly connected to the top surface of the return spring (16). A bearing (15) is provided between the second limiting ring (17) and the connecting sleeve (9). The bottom end of the return spring (16) abuts against the top surface of the rotating plate (13). A first valve body (30) is provided between the water receiving tray (2) and the intermediate rotating plate (8). A second valve body (35) is provided between the intermediate rotating plate (8) and the rotating plate (13). The first valve body (30) includes an annular groove (31) opened on the top surface of the turntable (8) and extending circumferentially around the fixed shaft (7), a rotating ring (32) rotatably connected in the annular groove (31), a valve stem (33) fixedly connected to the rotating ring (32) and passing through the first water inlet hole (5) in a vertical direction, and a sealing plate (34) fixedly connected to the top of the valve stem (33). The sealing plate (34) is spherical and its outer edge is bent downward. When the sliding block (27) slides in the track groove (22) and drives the connecting sleeve (9) and the turntable (8) to the lowest position, the sealing plate (34) closes the first water inlet hole (5). The second valve body (35) includes an elastic rod (36) with its bottom end located inside the second drain cylinder (18) and its top end extending above the drain hole (10), and a sealing block (37) fixedly connected to the top end of the elastic rod (36). The elastic rod (36) includes a sliding sleeve (38) located inside the second drain cylinder (18), an extension rod (39) slidably inserted into the sliding sleeve (38), and a fixing spring (40) located inside the sliding sleeve (38) and abutting against the extension rod (39). The drain hole (10) has a chamfer at the opening and a magnetic ring (41) at the chamfer. The sealing block (37) is made of magnetic material. The sliding sleeve (38) is fixedly connected to the inner wall of the second drain cylinder (18) by several fixing rods.

2. The meteorological monitoring precipitation sampler according to claim 1, characterized in that: The circumferential wall of the turntable (8) is provided with a plurality of first drainage holes (42), and the circumferential wall of the box (1) is provided with a plurality of second drainage holes (43) that correspond one-to-one with the first drainage holes (42) in the vertical direction. When the sliding block (27) slides in the track groove (22) and drives the connecting sleeve (9) and the turntable (8) to the lowest position, the first drainage hole (42) and the second drainage hole (43) are connected.

3. A meteorological monitoring precipitation sampler according to claim 1, characterized in that: A water storage tank (44) is fixedly connected to the top of the box body (1). A second water inlet (45) communicating with the water storage tank (44) is opened at the bottom of the water receiving tray (2). A third valve body (47) is provided at the bottom of the water storage tank (44). A retaining ring (48) is fixedly connected to the top surface of the transfer plate (8). The water storage tank (44) is located inside the retaining ring (48). The third valve body (47) includes a valve fixedly connected to the bottom of the water storage tank (44) and closed at the top. The valve tube (49), the valve block (50) slidably connected inside the valve tube (49), and the abutment spring (51) disposed at the top and bottom of the valve block (50) inside the valve tube (49) are provided. The bottom of the water tank (44) is provided with a through hole (52) corresponding to the valve tube (49). The bottom of the peripheral wall of the valve tube (49) is provided with several through grooves (53). When the valve block (50) is located at the bottom of the valve tube (49), the through hole (52) and the through grooves (53) are closed. The center of the turntable (8) is provided with a connecting pipe (54), and the center of the connecting pipe (54) is provided with a top rod (55) extending upward. When the sliding block (27) slides in the track groove (22) and drives the connecting sleeve (9) and the turntable (8) to the highest position, the top rod (55) pushes the valve block (50) to move and open the through groove (53). The outer wall of the first diversion tube (11) is provided with an annular cavity (56), and the inner wall of the first diversion tube (11) is provided with a plurality of flushing holes (57) communicating with the annular cavity (56). The other end of the connecting pipe (54) is connected to the annular cavity (56).

4. A meteorological monitoring precipitation sampler according to claim 3, characterized in that: The inner diameter of the middle part of the connecting pipe (54) is smaller than the inner diameters at both ends.

5. A meteorological monitoring precipitation sampler according to claim 3, characterized in that: The top of the water tank (44) is provided with a filter layer (46) located below the second water inlet (45).

6. A meteorological monitoring precipitation sampler according to claim 1, characterized in that: The sampling bottle (4) is provided with a buoyancy valve (58) at the bottle mouth. The buoyancy valve (58) includes an abutment ring (59) fixedly connected to the bottle mouth of the sampling bottle (4) and a buoyancy block (60) disposed below the abutment ring (59). The outer edge of the top of the buoyancy block (60) is chamfered, and the inner edge of the abutment ring (59) is chamfered to cooperate with the buoyancy block (60). When the buoyancy block (60) moves to abut against the abutment ring (59), it closes the bottle mouth of the sampling bottle (4). The sampling bottle (4) is provided with a guide rod (61) arranged along its axis. The bottom of the buoyancy block (60) is fixedly connected to a guide sleeve (62) that is slidably sleeved on the guide rod (61). A plurality of connecting rods (63) are fixedly connected between the bottom end of the guide rod (61) and the inner wall of the sampling bottle (4).

7. A meteorological monitoring precipitation sampler according to claim 1, characterized in that: The first water inlet (5) has an overflow ring (6) extending upward at its opening.

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