Rainfall monitoring device

Abstract

The utility model relates to the technical field of rainfall monitoring, in particular to a rainfall monitoring device which comprises a rainwater collecting structure, a tipping bucket and a sensor, and a quantitative water passing structure is arranged between the rainwater collecting structure and the tipping bucket. The rainwater collecting structure comprises a water collecting barrel, the water collecting barrel abuts against the inner wall of the top opening of the protective shell and is a water collecting opening, rainwater on the upper portion falls into the water collecting barrel, and a water outlet is formed in the bottom of the water collecting barrel. The quantitative water passing structure comprises a through hole cylinder, the through hole cylinder is vertically arranged in the water collecting cylinder, a plug is arranged in a through hole of the through hole cylinder in a sliding mode, a buoyancy plate is arranged on the top of the plug, and a magnetic block is arranged outside the through hole cylinder and at the bottom of the through hole of the through hole cylinder. According to the rainfall monitoring device, the technical problems that part of water flow does not enter the tipping bucket and is wasted when the tipping bucket swings in an existing rainfall monitoring device, and the water flow in the tipping bucket cannot be completely discharged due to the fact that the swinging speed of the tipping bucket is too high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rainfall monitoring, and particularly to a rainfall monitoring device. Background Art

[0002] A rainfall monitoring device is a meteorological instrument used to measure and record rainfall. Such a device generally includes a water collector, a measuring container, and a recording device. Rainfall monitoring devices can be used for various purposes, including meteorological observation, flood warning, agricultural irrigation, water resource management, and monitoring of urban drainage systems, etc. These devices can help people better understand rainfall conditions and take corresponding measures to cope with extreme weather events such as heavy rain and drought.

[0003] In existing rainfall monitoring devices, especially tipping bucket rainfall monitoring devices, when monitoring rainfall, when rainwater flows into the tipping bucket, due to the continuous swinging of the tipping bucket, the partition in the middle of the tipping bucket will block the flowing rainwater and divert some rainwater to the other side or outside of the tipping bucket.

[0004] The Chinese utility model patent with the patent name of "A Rainfall Monitoring Device" and the publication number of CN217846676U that has been published. This patent includes a rain collection mechanism and a base. A tipping bucket is installed inside the base. Rotating shafts are arranged on the front and rear sides of the tipping bucket. The tipping bucket rotates through the rotating shafts. Rainwater collected by the rain collection mechanism falls into one of the tipping buckets. When the accumulated water volume reaches the specified weight, one side of the tipping bucket flips downward and the other tipping bucket flips upward to pour the water into the drain pipe. The baffle plate blocks the opening part of the tipping bucket, and rainwater enters the tipping bucket from the remaining unblocked part. At the same time, another baffle plate completely blocks the opening part of the tipping bucket that flips downward to prevent rainwater from entering both tipping buckets simultaneously, thereby reducing errors during rainfall monitoring.

[0005] Although the above device can prevent rainwater from entering both tipping buckets simultaneously, because the rainfall inflow is continuous, if the rainfall is too large, the swinging frequency of the tipping bucket will also increase, resulting in too fast flipping and swinging, and there will be a part of the water flow remaining inside without being discharged, thus affecting the accuracy of rainfall monitoring. Summary of the Utility Model

[0006] The purpose of this application is to provide a rainfall monitoring device, which solves the technical problems that in the existing rainfall monitoring device, part of the water flow is wasted without entering the tipping bucket during the swinging of the tipping bucket, and the swinging speed of the tipping bucket is too fast, resulting in incomplete discharge of the water flow inside.

[0007] To solve the above technical problems, the solution adopted in this application is as follows:

[0008] A rainfall monitoring device includes a protective housing, a rain collection structure, a tipping bucket, and sensors. The rain collection structure is located between the protective housing and the tipping bucket. The water inlet of the rain collection structure is at the top of the protective housing, and the water outlet of the rain collection structure is above the tipping bucket. A sensor is provided at each end of the tipping bucket to detect the swing of the corresponding end of the tipping bucket. A quantitative water passage structure is provided between the rain collection structure and the tipping bucket, and the quantitative water passage structure is located at the water outlet of the rain collection structure.

[0009] Preferably, the rain collection structure includes a water collection cylinder, which is in contact with the inner wall of the top opening of the protective housing and serves as the water inlet of the rain collection structure. Rainwater falling above the protective housing flows into the water collection cylinder, and the bottom of the water collection cylinder is set as the water outlet of the rain collection structure.

[0010] Preferably, the quantitative water passage structure includes a through-hole cylinder, which is vertically arranged in the water collection cylinder. A plug is vertically slidably arranged in the through-hole of the through-hole cylinder. A buoyancy plate is provided at the top of the plug and is located outside the through-hole cylinder. A magnetic block is provided at the bottom of the through-hole of the through-hole cylinder.

[0011] Preferably, a plurality of vertically arranged water passing holes are formed through the circular outer wall of the through-hole cylinder, and the water passing holes communicate the inside of the water collection cylinder and the through-hole cylinder. When the magnetic block abuts against the plug, the circular outer wall of the plug fits and covers all the water passing holes. When the buoyancy plate receives the buoyancy of the water in the water collection cylinder and causes the plug to separate from the magnetic block, the plug is located at the top of the through-hole cylinder, and the circular outer wall of the plug is not in contact with all the water passing holes.

[0012] Preferably, it further includes an orientation adjustment structure, which includes a steering box. The interior of the steering box is hollow, and a slot is provided at the top, and the quantitative water passage structure is above the slot.

[0013] Preferably, one side of the steering box is rotatably arranged in the protective housing through a connecting column, and diversion openings are formed through the left and right side surfaces of the steering box along the rotation direction of the connecting column.

[0014] Preferably, the tipping bucket is arranged below the steering box. Non-connected water collection troughs are respectively arranged on the left and right sides of the tipping bucket, and the volumes of the two water collection troughs are the same. The two water collection troughs are respectively vertically corresponding and matched with the two diversion openings of the steering box.

[0015] Preferably, two connecting plates are arranged on the side of the steering box away from the connecting column, respectively close to the two diversion openings on the steering box. One end of a pull rod is rotatably connected to the connecting plate at the left diversion opening, and the other end of the pull rod is rotatably connected to the outside of the right side of the tipping bucket. One end of another pull rod is connected to the connecting plate at the right diversion opening, and the other end of the other pull rod is rotatably connected to the outside of the left side of the tipping bucket.

[0016] Preferably, when the water collecting tank on the left side of the tipping bucket is higher than the water collecting tank on the right side of the tipping bucket, the diversion port on the left side of the steering box is lower than the diversion port on the right side of the steering box; when the water collecting tank on the left side of the tipping bucket is lower than the water collecting tank on the right side of the tipping bucket, the diversion port on the left side of the steering box is higher than the diversion port on the right side of the steering box.

[0017] Preferably, a water pipe is vertically arranged on the bottom surface of the water collecting cylinder, the pipe space of the water pipe is communicated with the through hole inside the through hole cylinder, a sealing plate is arranged at the bottom of the pipe of the water pipe, and a plurality of leakage holes are penetrated through the sealing plate.

[0018] Preferably, it further includes a metering structure, the metering structure includes a tipping bucket, a rotating shaft is fixedly connected to the middle of the tipping bucket, the rotating shaft is rotatably arranged in a protective housing, a baffle is arranged below the tipping bucket, the baffle is fixed on the protective housing, and both ends of the baffle are respectively in corresponding abutment with the bottom sides of both sides of the tipping bucket.

[0019] Preferably, when the bottom surface of one side of the tipping bucket abuts against one end of the baffle, the bottom surface of the other side of the tipping bucket does not contact the baffle.

[0020] Preferably, two sensors are arranged in the protective housing, the sensing heads of the sensors respectively correspond to the positions of the water collecting tanks on the left and right sides of the tipping bucket, and the sensors and the baffle are at the same height.

[0021] Preferably, when the bottom of the left side of the tipping bucket abuts against the baffle, the sensor located on the left side of the tipping bucket is close to the left side surface of the tipping bucket at this time; the right side of the tipping bucket does not contact the baffle and is higher than the side of the tipping bucket, and the sensor located on the right side of the tipping bucket is far from the right side surface at this time.

[0022] Preferably, the protective housing includes a cylindrical outer wall, and a protective mesh cover is covered on the top surface of the cylindrical outer wall.

[0023] Preferably, two through holes are arranged on the drainage plate, the through holes are vertically corresponding to the outlets of the water collecting tanks on the left and right sides of the tipping bucket, and a water outlet mesh hole is arranged below the drainage plate, and the water outlet mesh hole is arranged on the bottom surface of the protective housing, so that the inside of the protective housing is communicated with the external environment.

[0024] The technical solution of the present application has at least the following advantages and beneficial effects:

[0025] In the present utility model, a water collecting cylinder is provided to collect more rainwater. Then, through the change between the buoyancy of the buoyancy plate and the magnetic attraction of the magnetic block, a fixed amount of water flow is discharged into the metering structure below. Here, the weight of the fixed amount of water flow is exactly the accommodating weight of the water collecting tank on one side of the tipping bucket. Such a setting can ensure that when the tipping bucket accommodates enough water flow to swing, no more water flow will be conveyed into the water pipe above. It is necessary to re-converge a sufficient amount of rainwater in the water collecting cylinder to drive the plug head to move upward for water passage. During this process, the water flow accommodated in the water collecting tank of the tipping bucket can be completely discharged, and there will be no water accumulation in the water collecting tank due to the too-fast swing of the tipping bucket, which affects the measurement accuracy.

[0026] In the present utility model, through the diversion ports on both sides of the steering box, the conveyed water flow will not directly flow to the center of the tipping bucket, but is diverted by the steering box to both sides of the tipping bucket, avoiding that when the tipping bucket swings, some water flow spills to the middle or outside of the tipping bucket, avoiding the loss of water flow conveyance and improving the accuracy of rainfall monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the present utility model.

[0028] Figure 2 is a schematic cross-sectional structural diagram of the present utility model.

[0029] Figure 3 is Figure 2 an enlarged schematic structural diagram of A in

[0030] Figure 4 is a schematic cross-sectional structural diagram of the metering structure in the present utility model.

[0031] Figure 5 is a schematic cross-sectional structural diagram of the steering structure in the present utility model.

[0032] Figure 6 is a schematic cross-sectional structural diagram of the protective housing in the present utility model.

[0033] Figure 7 is a schematic structural diagram of another angle of the present utility model.

[0034] In the figure: 1 - protective housing, 11 - outer wall of the cylindrical barrel, 12 - protective mesh cover, 13 - water outlet mesh holes, 2 - rainwater collection structure, 21 - funnel, 22 - water collecting cylinder, 23 - support plate, 3 - fixed - amount water - passing structure, 31 - through - hole cylinder, 32 - plug head, 33 - buoyancy plate, 34 - magnetic block, 35 - water - passing hole, 36 - water pipe, 37 - leakage hole, 4 - steering structure, 41 - steering box, 42 - connecting column, 43 - connecting plate, 44 - pull rod, 5 - metering structure, 51 - tipping bucket, 52 - rotating shaft, 53 - baffle, 54 - sensor, 6 - drainage plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. If terms such as "center", "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of this application is normally placed. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to this application. It should also be noted that unless otherwise clearly specified and defined, if terms such as "set", "installed", "connected" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0037] Embodiment

[0038] Please refer to Figures 1-7 , the present invention provides a rainfall monitoring device, including a protective housing 1, a rain collection structure 2, a quantitative water passing structure 3, an orientation adjustment structure 4, a metering structure 5, and a drainage plate 6.

[0039] Furthermore, the protective housing 1 includes a cylindrical outer wall 11 and a protective mesh cover 12. The inside of the cylindrical outer wall 11 is hollow, covering other structures arranged inside it for protection. The top surface of the cylindrical outer wall 11 is fixedly covered with a protective mesh cover 12, which can ensure the normal collection of rainfall while preventing external debris such as fallen leaves and stones from falling into the inside of the cylindrical outer wall 11.

[0040] At the upper part inside the outer wall 11 of the barrel, a rain collection structure 2 is provided. The rainwater falling into the barrel is gathered together through the rain collection mechanism. A quantitative water passing structure 3 is arranged in the rain collection structure 2, and a fixed amount of rainwater is regularly introduced into the direction adjusting structure 4 arranged below it through the quantitative water passing structure 3. A measuring structure 5 is arranged below the direction adjusting structure 4. The direction adjusting structure 4 adjusts the direction of rainwater input, so that a fixed amount of rainwater is conveyed to different positions of the measuring structure 5. The tipping bucket 51 in the measuring structure 5 is flipped in different directions by the weight of the rainwater, and thus the amount of external rainfall is calculated by the number of flips. A drain plate 6 is arranged at the bottom of the measuring structure 5 to discharge the rainwater after measurement from the device.

[0041] Specifically, the rain collection structure 2 includes a funnel 21, a water collection cylinder 22, and a support plate 23.

[0042] The outermost edge of the funnel 21 is fixedly installed at the top of the outer wall 11 of the barrel and abuts against the protective mesh cover 12. The water collection cylinder 22 is arranged at the outlet at the bottom of the funnel 21, so that the rainwater falling above the device will flow into the water collection cylinder 22 through the funnel 21 for storage and collection.

[0043] The bottom of the water collection cylinder 22 is fixed on the top of the support plate 23, and the support plate 23 is fixed inside the outer wall 11 of the barrel, providing support for the rain collection structure 2, the quantitative water passing structure 3, the direction adjusting structure 4, and the measuring structure 5.

[0044] Specifically, the quantitative water passing structure 3 includes a through-hole cylinder 31, a plug 32, a buoyancy plate 33, a magnetic block 34, a water passing hole 35, a water pipe 36, and a leakage hole 37.

[0045] The through-hole cylinder 31 is vertically arranged in the water collection cylinder 22, and it has a through-hole along the axial direction. A plug 32 is vertically slidably arranged in the through-hole of the through-hole cylinder 31, and the outer wall of the plug 32 fits with the inner wall of the through-hole. A buoyancy plate 33 is arranged at the top of the plug 32, outside the through-hole cylinder 31. The inside of the buoyancy plate 33 is hollow and will generate buoyancy when immersed in water. A magnetic block 34 is arranged at the bottom of the through-hole of the through-hole cylinder 31.

[0046] Preferably, the bottom of the plug 32 is a metal structure and can be magnetically adsorbed by the magnetic block 34. When the height of the rainwater in the water collection cylinder 22 reaches the buoyancy plate 33, the buoyancy plate 33 will generate buoyancy. At this time, the buoyancy of the buoyancy plate 33 will be offset by the magnetic attraction force at the bottom of the plug 32, so that the floating plate cannot drive the plug 32 to move upward, and the plug 32 and the magnetic block 34 do not separate.

[0047] When the rainwater level in the water collection cylinder 22 just submerges the buoyancy plate 33, causing the buoyancy generated by the buoyancy plate 33 to reach its maximum, the buoyancy of the buoyancy plate 33 at this time can just overcome the magnetic suction force at the bottom of the plug 32, causing the plug 32 to separate from the magnetic block 34. The magnetic suction force becomes weaker and weaker during the separation process. The buoyancy plate 33 will carry the plug 32 upward to the top of the through-hole cylinder 31 until the buoyancy plate 33 floats on the water surface.

[0048] Among them, a plurality of water passing holes 35 arranged vertically are formed through the circular outer wall of the through-hole cylinder 31, and the water passing holes 35 communicate with the inside of the water collection cylinder 22 and the through-hole cylinder 31.

[0049] Therefore, when the rainwater level inside the water collection cylinder 22 is lower than the top surface of the buoyancy plate 33 and the buoyancy generated by the buoyancy plate 33 is less than the magnetic suction force, the magnetic block 34 abuts against the plug 32, and the circular outer wall of the plug 32 will fit and cover all the water passing holes 35, preventing the rainwater in the water collection cylinder 22 from entering the through-hole of the through-hole cylinder 31.

[0050] When the rainwater level inside the water collection cylinder 22 just submerges the top surface of the buoyancy plate 33 and the buoyancy generated by the buoyancy plate 33 is greater than the magnetic suction force, the plug 32 separates from the magnetic block 34, and the plug 32 moves upward to the top of the through-hole cylinder 31, so that the water passing holes 35 are not blocked, and the rainwater enters the through-hole of the through-hole cylinder 31 from the water collection cylinder 22.

[0051] At this time, as the amount of water in the water collection cylinder 22 decreases, the buoyancy plate 33 will slowly move downward under the action of gravity until the plug 32 moves downward to block the entire water passing hole 35 and is magnetically adsorbed by the magnetic block 34 again, stopping the water flow. Thus, the quantitative conveyance of rainwater is realized. As the external rainwater continuously converges, the quantitative water conveyance structure 3 will repeat the above steps all the time.

[0052] In addition, a water pipe 36 is vertically arranged at the bottom surface of the water collection cylinder 22. The pipe space of the water pipe 36 communicates with the through-hole inside the through-hole cylinder 31. The water flow in the water collection cylinder 22 will enter the water pipe 36 after entering the through-hole cylinder 31 and is discharged from the bottom of the water pipe 36. A blocking plate is arranged at the bottom of the pipe of the water pipe 36, and a number of leakage holes 37 are formed through the blocking plate. The blocking by the leakage holes 37 can ensure the conveyed water volume while avoiding the excessive impact force of the water flow after being conveyed by the water pipe 36 on the direction adjustment structure 4 below it.

[0053] In some feasible embodiments, the direction adjustment structure 4 includes a steering box 41, a connecting column 42, a connecting plate 43, and a pull rod 44.

[0054] Specifically, the inside of the steering box 41 is hollow, and a slot is provided at the top. Above the slot is the water pipe 36, and the water flow in the water pipe 36 will flow into the inside of the steering box 41 through the slot for temporary storage.

[0055] One end face of the steering box 41 is fixedly provided with a connecting column 42. The connecting column 42 is rotatably arranged on the support plate 23. The left and right side faces of the steering box 41 along the rotation direction of the connecting column 42 are penetrated with diversion ports. When the steering box 41 rotates towards the left and right sides through the connecting column 42, the temporarily stored water flow in the steering box 41 will flow out from the diversion port on the lower height side of it.

[0056] A metering structure 5 is arranged below the steering box 41. The metering structure 5 includes a tipping bucket 51, a rotating shaft 52, a baffle 53, and a sensor 54.

[0057] Specifically, a rotating shaft 52 is fixedly connected to the middle of the tipping bucket 51. The rotating shaft 52 is rotatably arranged on the support plate 23. Disconnected collecting troughs are respectively arranged on the left and right sides of the tipping bucket 51. The volumes of the two collecting troughs are the same, and openings are arranged at their corresponding ends. When one side of the collecting trough is tilted, the water flow on that side will flow out from its opening.

[0058] The two collecting troughs are respectively in upper and lower corresponding matching with the two diversion ports of the steering box 41, so that the water flow flowing out from the diversion port on one side of the steering box 41 will enter the collecting trough on the corresponding side of the tipping bucket 51. When the water volume in the collecting trough reaches a certain weight, it will drive the tipping bucket 51 to rotate towards that side, making the collecting trough on that side tilt, and the water flow flows out.

[0059] Further, two connecting plates 43 are arranged on the end face of the steering box 41 far from the connecting column 42, respectively close to the two diversion ports on the steering box 41. One end of a pull rod 44 is rotatably connected to the connecting plate 43 at the left diversion port. The other end of the pull rod 44 is rotatably connected to the outside of the right side of the tipping bucket 51. One end of another pull rod 44 is connected to the connecting plate 43 at the right diversion port. The other end of the other pull rod 44 is rotatably connected to the outside of the left side of the tipping bucket 51.

[0060] Preferably, through the staggered arrangement of the two pull rods 44, the diversion port with the lower height in the steering box 41 is always corresponding to the collecting trough with the higher height in the tipping bucket 51, that is, when the collecting trough on the left side of the tipping bucket 51 is higher than the collecting trough on the right side of the tipping bucket 51, the diversion port on the left side of the steering box 41 is lower than the diversion port on the right side of the steering box 41; when the collecting trough on the left side of the tipping bucket 51 is lower than the collecting trough on the right side of the tipping bucket 51, the diversion port on the left side of the steering box 41 is higher than the diversion port on the right side of the steering box 41.

[0061] Preferably, the water flow in the turning box 41 flows out from the diversion port at a lower height and falls into the water collecting tank at a higher height. After the collected water flow reaches the specified weight, the height of the water collecting tank at the higher height decreases, and the corresponding height of the water collecting tank at the other end without water collection rises. At this time, the flipping rotation will drive the movement of the pull rod 44, thereby pushing the diversion port at the lower height of the upper turning box 41 upward, and the diversion port at the higher height downward, so that the water flow in the turning box 41 flows from the diversion port on the other side into the water collecting tank without water collection below. When the water flow keeps flowing, the tipping bucket 51 and the turning box 41 keep repeating the above steps.

[0062] Preferably, during the left-right swing of the turning box 41 and the tipping bucket 51, the water flow in the turning box 41 will not be randomly scattered to other positions of the tipping bucket 51 or the inside of the device, and the weight of the water flow transported to the water collecting tank of the tipping bucket 51 can be maintained with high precision, thereby improving the accuracy of water volume detection.

[0063] Furthermore, a baffle 53 is provided below the tipping bucket 51. The baffle 53 is fixed on the support plate 23. The two ends of the baffle 53 respectively abut against the bottom sides of the two sides of the tipping bucket 51. When the bottom surface of one side of the tipping bucket 51 abuts against one end of the baffle 53, the bottom surface of the other side of the tipping bucket 51 does not contact the baffle 53. The baffle 53 is used to limit the angle when the tipping bucket 51 swings left and right.

[0064] Furthermore, two sensors 54 are fixedly arranged on the support plate 23. The sensing heads of the sensors 54 respectively correspond to the positions of the water collecting tanks on the left and right sides of the tipping bucket 51. The sensors 54 and the baffle 53 are at the same height. The sensing heads of the sensors 54 can sense whether there is an object in front. When there is an object, an electrical signal will be emitted.

[0065] When the bottom of the left side of the tipping bucket 51 abuts against the baffle 53, at this time, the sensor 54 on the left side of the tipping bucket 51 is close to the left side surface of the tipping bucket 51, detects the object and emits an electrical signal, while the right side of the tipping bucket 51 does not contact the baffle 53 and is higher than the left side of the tipping bucket 51. At this time, the sensor 54 on the right side of the tipping bucket is far from the right side surface and does not detect the material and does not emit a signal.

[0066] Preferably, the metering principle in the metering structure 5 is that the water collecting tank of the tipping bucket 51 can collect a fixed weight of water flow. Whenever the tipping bucket 51 swings once, the sensor 54 will emit an electrical signal once, and the data terminal in the device will record an electrical signal once for counting. When the rain stops, the rainwater in the water collecting cylinder 22 just cannot make the buoyancy plate 33 float. At this time, as long as the water volume in the water collecting cylinder 22 and the number of electrical signals stored in the data terminal are calculated, the accurate water volume data can be obtained.

[0067] In some feasible embodiments, the protective housing 1 further includes a water outlet mesh hole 13, which is located at the bottom surface of the outer wall 11 of the barrel. Inside the outer wall 11 of the barrel, a drainage plate 6 is provided below the metering structure 5, and the drainage plate 6 is fixed inside the outer wall 11 of the barrel.

[0068] Two through holes are provided on the drainage plate 6, and the through holes correspond to the outlets of the water collecting troughs on the left and right sides of the tipping bucket 51 up and down. When the water in the water collecting trough on one side of the tipping bucket 51 moves down to discharge the water flow, the water flow will fall into the through holes of the drainage plate 6. A water outlet mesh hole 13 is provided below the drainage plate 6, and the water outlet mesh hole 13 is provided on the bottom surface of the protective housing 1, so that the inside of the protective housing 1 is communicated with the external environment, and the water flow quickly flows out of the device through the water outlet mesh hole 13 to avoid accumulation.

[0069] So far, the embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details well known in the art have not been described. Those skilled in the art can clearly understand how to implement the technical solutions of the present invention based on the above description, and the scope of the present invention is defined by the appended claims.

Claims

1. A rainfall monitoring device, comprising a protective housing (1), a rain collection structure (2), a tipping bucket (51) and a sensor (54). The rain collection structure (2) is located between the protective housing (1) and the tipping bucket (51). The water inlet of the rain collection structure (2) is located at the top of the protective housing (1), and the water outlet of the rain collection structure (2) is located above the tipping bucket (51). A sensor (54) is respectively arranged at both ends of the tipping bucket (51). The swing of one end of the corresponding tipping bucket (51) is detected by the sensor (54). It is characterized in that, A quantitative water passing structure (3) is arranged between the rainwater collection structure (2) and the tipping bucket (51), and the quantitative water passing structure (3) is located at the water outlet of the rainwater collection structure (2); The rainwater collection structure (2) includes a water collection cylinder (22), and the water collection cylinder (22) abuts against the inner wall of the top opening of the protection housing (1) and is set as the water inlet of the rainwater collection structure (2). The rainwater falling above the protection housing (1) flows into the water collection cylinder (22), and the bottom of the water collection cylinder (22) is set as the water outlet of the rainwater collection structure (2); The quantitative water passing structure (3) includes a through-hole cylinder (31), the through-hole cylinder (31) is vertically arranged in the water collection cylinder (22), a plug (32) is vertically slidably arranged in the through-hole of the through-hole cylinder (31), a buoyancy plate (33) is arranged at the top of the plug (32) and is located outside the through-hole cylinder (31), and a magnetic block (34) is arranged at the bottom of the through-hole of the through-hole cylinder (31); A plurality of vertically arranged water passing holes (35) are penetrated through the circular outer wall of the through-hole cylinder (31), and the water passing holes (35) communicate the inside of the water collection cylinder (22) and the through-hole cylinder (31); when the magnetic block (34) abuts against the plug (32), the circular outer wall of the plug (32) fits and covers all the water passing holes (35); when the buoyancy plate (33) is subjected to the buoyancy of the water in the water collection cylinder (22) and the plug (32) is separated from the magnetic block (34), the plug (32) is located at the top of the through-hole cylinder (31), and the circular outer wall of the plug (32) is not in contact with all the water passing holes (35).

2. The rainfall monitoring device according to claim 1, characterized in that, A direction adjusting structure (4) is further included, and the direction adjusting structure (4) includes a steering box (41). The inside of the steering box (41) is hollow, and a slot is arranged at the top, and the quantitative water passing structure (3) is above the slot; One side surface of the steering box (41) is rotatably arranged in the protection housing (1) through a connecting column (42), and diversion ports are penetrated through the left and right side surfaces of the steering box (41) along the rotation direction of the connecting column (42); A tipping bucket (51) is arranged below the steering box (41). The left and right sides of the tipping bucket (51) are respectively provided with non-connected water collection tanks, and the volumes of the two water collection tanks are the same. The two water collection tanks are respectively in upper and lower corresponding matching with the two diversion ports of the steering box (41).

3. The rainfall monitoring device according to claim 2, characterized in that, Two connecting plates (43) are arranged on the side surface of the steering box (41) far away from the connecting column (42), and are respectively close to the two diversion ports on the steering box (41). The two diversion ports are respectively a left diversion port and a right diversion port. One end of a pull rod (44) is rotatably connected to the connecting plate (43) at the left diversion port, and the other end of the pull rod (44) is rotatably connected to the outside of the right side of the tipping bucket (51). One end of another pull rod (44) is connected to the connecting plate (43) at the right diversion port, and the other end of the other pull rod (44) is rotatably connected to the outside of the left side of the tipping bucket (51); When the water collecting tank on the left side of the tipping bucket (51) is higher than the water collecting tank on the right side of the tipping bucket (51), the diversion opening on the left side of the steering box (41) is lower than the diversion opening on the right side of the steering box (41); when the water collecting tank on the left side of the tipping bucket (51) is lower than the water collecting tank on the right side of the tipping bucket (51), the diversion opening on the left side of the steering box (41) is higher than the diversion opening on the right side of the steering box (41).

4. A rainfall monitoring device according to claim 1, characterized in that, A water pipe (36) is vertically arranged on the bottom surface of the water collecting cylinder (22). The pipe space of the water pipe (36) is communicated with the through hole inside the through hole cylinder (31). A blocking plate is arranged at the bottom of the pipe of the water pipe (36), and a plurality of leakage holes (37) are penetrated through the blocking plate.

5. A rainfall monitoring device according to claim 1, characterized in that, It further includes a metering structure (5). The metering structure (5) includes a tipping bucket (51). A rotating shaft (52) is fixedly connected to the middle of the tipping bucket (51). The rotating shaft (52) is rotatably arranged in the protective housing (1). A baffle (53) is arranged below the tipping bucket (51). The baffle (53) is fixed on the protective housing (1). The two ends of the baffle (53) are respectively in corresponding abutment with the bottom sides of both sides of the tipping bucket (51); When the bottom surface of one side of the tipping bucket (51) abuts against one end of the baffle (53), the bottom surface of the other side of the tipping bucket (51) does not contact the baffle (53).

6. The rainfall monitoring device according to claim 5, wherein, Two sensors (54) are arranged in the protective housing (1). The sensing heads of the sensors (54) respectively correspond to the positions of the water collecting tanks on the left and right sides of the tipping bucket (51). The sensors (54) and the baffle (53) are at the same height; When the bottom of the left side of the tipping bucket (51) abuts against the baffle (53), the sensor (54) on the left side of the tipping bucket (51) is close to the left side surface of the tipping bucket (51) at this time; the right side of the tipping bucket (51) does not contact the baffle (53) and is higher than the left side of the tipping bucket (51). At this time, the sensor (54) on the right side of the tipping bucket is far from the right side surface.

7. The rainfall monitoring device according to claim 1, wherein The protective housing (1) includes a cylindrical outer wall (11), and a protective mesh cover (12) covers the top surface of the cylindrical outer wall (11).

8. A rainfall monitoring device according to claim 2, wherein, The outlets of the water collecting tanks on the left and right sides of the tipping bucket (51) respectively correspond up and down to two through holes arranged on the drainage plate (6). An outlet mesh hole (13) is arranged below the drainage plate (6). The outlet mesh hole (13) is arranged on the bottom surface of the protective housing (1) so that the inside and the outside environment of the protective housing (1) are communicated.

Images