Meteorological monitoring rainfall sampling device

Abstract

The invention belongs to the technical field of rainfall sampling devices, and particularly relates to a meteorological monitoring rainfall sampling device which comprises a collecting barrel, a collecting opening is formed in the top of the collecting barrel, a funnel is integrally formed on the inner wall of the collecting barrel, a taking and placing opening is formed in the front side of the collecting barrel, and a sampling barrel is placed on the inner bottom wall of the collecting barrel. And a guide sleeve is fixedly connected to the inner wall of the pipe part at the bottom end of the funnel through three connecting blocks which are distributed in an annular array, and the outer side of the lifting rod is movably sleeved with the guide sleeve. According to the rainfall sampling device for meteorological monitoring, by arranging the adjustable trigger type pressing agent assembly and by means of linkage of the floating ball and the lifting rod, automatic trigger feeding of a reagent is achieved, manual intervention is not needed, and the problems that traditional manual feeding is tedious and poor in timeliness are solved; and the relative position of the extrusion plate and the pressing block can be adjusted through sliding of the moving seat in the moving groove, so that the reagent adding amount requirements in different rainfall scenes are flexibly met, and the practicability is higher.

Description

Technical Field

[0001] This invention belongs to the technical field of precipitation sampling devices, specifically relating to a meteorological monitoring precipitation sampling device. Background Technology

[0002] In meteorological monitoring, reagents (such as nitric acid) need to be added to rainwater promptly after sampling to stabilize water quality and prevent pH changes, metal ion adsorption, and microbial activity from affecting the accuracy of subsequent detection. Currently, manual reagent addition is commonly used, which is not only cumbersome and lacks timeliness, but also prone to localized reagent accumulation leading to uneven mixing with rainwater. Furthermore, the lack of an automatic triggering mechanism prevents flexible adjustment of reagent dosage based on rainfall collection volume, thus affecting the accuracy of detection results and increasing the risk of subsequent data errors. Therefore, this paper proposes a meteorological precipitation sampling device.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a meteorological monitoring precipitation sampling device to solve the problems mentioned above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A meteorological monitoring precipitation sampling device includes a collection cylinder with a collection port at the top and a funnel integrally formed on the inner wall of the cylinder. A pick-and-place port is located on the front side of the collection cylinder, and a sampling cylinder is placed on the inner bottom wall of the collection cylinder. A guide sleeve is fixedly connected to the inner wall of the bottom tube of the funnel via three annularly arrayed connecting blocks. The guide sleeve is movably fitted onto the outside of a lifting rod. A guide key is also fixedly connected to the middle of the back side of the lifting rod. A guide opening is provided on the inner wall of the guide sleeve to cooperate with the guide key. A float is threaded onto the bottom end of the lifting rod. An adjustable trigger-type pressure assembly is installed at the bottom end of the funnel. A sealing assembly is installed on the adjustable trigger-type pressure assembly.

[0006] Preferably, the adjustable trigger-type pressurization assembly includes a mounting sleeve threaded to the inner wall of the bottom opening of the funnel. The bottom end of the mounting sleeve is integrally formed with two symmetrically arranged support plates. Each of the two support plates has a moving groove with a vertical cross-section of I-shape. A moving seat with a vertical cross-section of I-shape is slidably connected in each moving groove. The bottom ends of the two moving seats are fixed to a first connecting plate with a vertical cross-section of Z-shape. The bottom ends of the first connecting plates are fixed to the middle of the outer arc wall of the arc-shaped pre-storage box. The arc-shaped pre-storage box has a pre-storage groove with an arc structure. The bottom end of the arc-shaped pre-storage box has a plurality of first through holes arranged in an array along the shape of the arc-shaped pre-storage box.

[0007] Preferably, a second connecting plate is integrally formed in the middle of the outer arc wall on the side of the arc-shaped pre-storage box opposite to the first connecting plate. The top of the second connecting plate is integrally formed with an extrusion plate with an arc-shaped vertical cross-section through a first weakening groove. Two symmetrically arranged reset plates are integrally formed on the inner arc wall of the extrusion plate. A second weakening groove is opened between the far ends of the two reset plates and the inner arc wall of the extrusion plate. The near ends of the two reset plates overlap the outer wall of the first connecting plate. A plurality of equidistant pressing blocks are fixed to the outer wall of the lifting rod below the two extrusion plates.

[0008] Preferably, the inner arc wall of the extrusion plate is fixedly connected to the same reservoir bladder between the inner arc walls of the two reset plates. A first spring is fixedly connected inside the reservoir bladder. The middle part of the first spring has an arc-shaped structure. A third weakening groove is opened at each of the two symmetrically arranged bends on the first spring. A discharge pipe with a one-way discharge valve is fixedly connected to the liquid outlet in the middle of the reservoir bladder. The other end of the discharge pipe extends and connects to the delivery chamber opened inside the first connecting plate. The bottom end of the delivery chamber is connected to the pre-storage slot through an opening.

[0009] Preferably, the top of each extrusion plate is integrally formed with a vertically arranged push plate through a fourth weakening groove, the top of each push plate is integrally formed with a pressing rod, the pressing rod slides in a movable groove opened on the first connecting plate, the other end of each pressing rod is fixedly connected with a U-shaped plate, the top two ends of each U-shaped plate are integrally formed with horizontally arranged insertion plates, the outer side of each insertion plate is movably sleeved with a guide seat, the top of each guide seat is fixedly connected to the inner top wall of the first connecting plate.

[0010] Preferably, a fifth weakening groove is provided at each of the two bends at the bottom of the U-shaped plate, and a sixth weakening groove is provided at the bend connection between the insertion plate and the U-shaped plate. Multiple slots are provided on the inner walls of both sides of the moving groove, and each slot is used to insert into the end of the insertion plate away from the sixth weakening groove.

[0011] Preferably, the sealing assembly includes an arched block fixedly connected to the center of the pre-storage slot. An arc-shaped channel is reserved between the bottom end of the arched block and the inner bottom wall of the pre-storage slot. Two symmetrically arranged arc-shaped sealing plates slide within the arc-shaped channel. The width of the arc-shaped sealing plates is larger than the width of the arched block. Inclined guide portions are provided at two positions in the pre-storage slot away from the arched block.

[0012] Preferably, the ends of the two arc-shaped sealing plates that are far apart are fixed to the inner wall of the arc-shaped channel by a second spring sheet with an hourglass-shaped cross-section. A first thinning zone is provided at the two bends in the middle of the two second spring sheets, a second thinning zone is provided at the two bends on the second spring sheet near the arc-shaped sealing plate, and a third thinning zone is provided at the two bends on the second spring sheet away from the arc-shaped sealing plate.

[0013] Preferably, both of the arc-shaped sealing plates are provided with a plurality of second through holes arranged in an array along the shape of the arc-shaped sealing plate. The second through holes are aligned with the first channel. A vertical rod is fixedly connected to the top of both arc-shaped sealing plates near the arched block. An L-shaped extrusion block is integrally formed in the middle of the outer wall of the extrusion plate on one side of each vertical rod. An extrusion slope is provided on the end of the L-shaped extrusion block facing the vertical rod.

[0014] Preferably, the top of the arched block has an arc-shaped arched structure, and the thickness of the arc-shaped channel is the same as the thickness of the arc-shaped sealing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The meteorological monitoring precipitation sampling device of the present invention, by setting an adjustable trigger-type pressure agent component, realizes automatic triggering of reagent addition by means of the linkage between the float and the lifting rod, without the need for manual intervention, which solves the problems of cumbersome and poor timeliness of traditional manual addition; and the relative position of the squeezing plate and the pressure block can be adjusted by the sliding of the movable seat in the movable slot, which can flexibly adapt to the reagent addition requirements under different precipitation scenarios, making it more practical. By incorporating an insert plate, a U-shaped plate, and a slot within the adjustable trigger-type dispensing assembly, the U-shaped plate can be driven through the fifth and sixth weakening grooves when the dispensing plate is pressed, thereby driving the insert plate to insert into the slot. This achieves automatic fixation of the assembly structure, preventing the dispensing efficiency from being affected by structural loosening during the dosing process and ensuring dosing stability. By setting up a sealing component, the through holes are sealed during the reagent pre-storage stage using the cooperation of the arc-shaped sealing plate and the second spring sheet. During the dosing stage, the through holes are automatically reset to align, allowing the reagent to fall evenly into the rainwater from multiple circumferential positions, effectively avoiding local accumulation, further improving mixing efficiency, and ensuring the accuracy of subsequent detection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall unfolded three-dimensional structure of the collection cylinder, funnel, and sampling cylinder of the present invention after being cut open; Figure 3 This is a schematic diagram of the overall top view of the present invention; Figure 4 This is a schematic diagram of the first three-dimensional view of each component in the adjustable trigger pressurization assembly of the present invention; Figure 5 This is a schematic diagram of the second three-dimensional view of each component in the adjustable trigger pressurization assembly of the present invention; Figure 6 This is a schematic diagram of the first three-dimensional view structure of each component in the sealing assembly of the present invention; Figure 7 This is a schematic diagram of the second three-dimensional view structure of each component in the sealing assembly of the present invention; Figure 8 This is a schematic diagram of the three-dimensional unfolded structure of each component of the arc-shaped closed structure of the present invention; Figure 9 This is the present invention. Figure 4 Enlarged structural diagram at point A in the diagram; Explanation of key figure labels: 1. Collection cylinder; 11. Collection port; 111. Funnel; 12. Dispensing port; 13. Sampling cylinder; 14. Lifting rod; 141. Guide sleeve; 142. Guide key strip; 15. Float; 2. Adjustable trigger-type pressurization assembly; 21. Pressure block; 22. Mounting sleeve; 23. Support plate; 24. Moving seat; 25. First connecting plate; 251. Dispensing chamber; 26. Arc-shaped pre-storage box; 261. Pre-storage slot; 262. First through hole; 27. Second connecting plate; 271. First weakening groove; 28. Squeezing plate; 281. Reset plate; 282. Second weakening groove; 29. ​​Storage bladder; 291. First spring. ; 292, Third weakening groove; 293, Discharge pipe; 210, Fourth weakening groove; 211, Push plate; 212, Pressing rod; 213, Movable groove; 214, U-shaped plate; 2141, Fifth weakening groove; 215, Insert plate; 216, Guide seat; 217, Sixth weakening groove; 218, Slot; 3, Sealing assembly; 31, L-shaped extrusion block; 311, Extrusion slope; 32, Upright rod; 33, Arc-shaped sealing plate; 331, Second through hole; 34, Arched block; 35, Flow guide; 36, Second spring sheet; 361, First thinning zone; 362, Second thinning zone; 363, Third thinning zone. Detailed Implementation

[0017] The technical solution of this invention patent will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0018] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] See attached document Figure 1-9 A meteorological monitoring precipitation sampling device includes a collection cylinder 1, a collection port 11 at the top of the collection cylinder 1, a funnel 111 integrally formed on the inner wall of the collection cylinder 1, a pick-and-place port 12 on the front side of the collection cylinder 1, a sampling cylinder 13 placed on the inner bottom wall of the collection cylinder 1, a guide sleeve 141 fixed to the inner wall of the bottom tube of the funnel 111 by three connecting blocks arranged in a ring array, the guide sleeve 141 being movably sleeved on the outside of the lifting rod 14, a guide key strip 142 fixedly connected to the middle of the back side of the lifting rod 14, a guide opening that cooperates with the guide key strip 142 on the inner wall of the guide sleeve 141, and a float ball 15 threadedly sleeved on the bottom end of the lifting rod 14; an adjustable trigger-type pressure assembly 2 installed at the bottom end of the funnel 111; and a sealing assembly 3 installed on the adjustable trigger-type pressure assembly 2.

[0021] It is worth noting that the adjustable trigger-type pressure component 2, by utilizing the rainwater collected in the collection cylinder 1, drives the float 15 to move the lifting rod 14 upward. Combined with the upward squeezing action, this forces the reagent into the pre-storage structure for pre-storage. After the squeezing is released, and in conjunction with the sealing component 3, the reagent automatically falls into the collection cylinder 1 at different locations, preventing it from falling into the collection cylinder 1 at the same location and significantly reducing the mixing efficiency between the reagent and rainwater. The reagent can be nitric acid solution, which can be added to the rainwater promptly, avoiding subsequent manual addition. Its functions are threefold: first, stabilizing the pH value and preventing precipitation; second, keeping metal ions in a free state and preventing them from adsorbing onto the container; and third, inhibiting some redox reactions and microbial activity. This effectively prevents changes in chemical reactions that could lead to low accuracy in subsequent rainwater detection. The adjustable trigger-type pressure agent assembly 2 can not only trigger the active injection of reagent from multiple different positions into the sampling cylinder 13 through rainwater collection, but also adjust the amount of appropriate squeezing reagent according to different rainwater conditions. In addition, it can further fix the adjustment structure during the squeezing process to avoid the problem of the adjustment structure becoming loose when squeezing the reagent. The sealing component 3 can be driven to seal the pre-storage structure during the compression of the adjustable trigger-type pressure component 2, so that the reagent is pre-stored in the pre-storage structure and will not fall into the sampling cylinder 13. When the compression is removed, the reagent is actively driven to fall into the sampling cylinder 13 from different circumferential positions on the top of the sampling cylinder 13, avoiding local accumulation of reagent and affecting the efficiency of mixing with rainwater.

[0022] Furthermore, such as Figure 1-9As shown, the adjustable trigger-type pressurization assembly 2 includes a mounting sleeve 22 threadedly connected to the inner wall of the bottom opening of the funnel 111. The bottom end of the mounting sleeve 22 has two symmetrically arranged support plates 23 integrally formed. Each support plate 23 has a vertical I-shaped moving groove. A moving seat 24 with a vertical I-shaped cross-section is slidably connected within each moving groove. The bottom ends of both moving seats 24 are fixedly connected to a first connecting plate 25 with a Z-shaped vertical cross-section. The bottom ends of the first connecting plates 25 are fixedly connected to the middle of the outer arc wall of the arc-shaped pre-storage box 26. The arc-shaped pre-storage box 26 has an arc-shaped pre-storage groove 261. The bottom end of the arc-shaped pre-storage box 26 has multiple first through holes 262 arranged in an array along the shape of the arc-shaped pre-storage box 26. On the pre-storage box 26, a second connecting plate 27 is integrally formed in the middle of the outer arc wall on the side opposite to the first connecting plate 25. At the top of each second connecting plate 27, a vertically curved extrusion plate 28 is integrally formed through a first weakening groove 271. Two symmetrically arranged reset plates 281 are integrally formed on the inner arc wall of each extrusion plate 28. A second weakening groove 282 is formed between the far ends of the two reset plates 281 and the inner arc wall of the extrusion plate 28. The near ends of the two reset plates 281 overlap the outer wall of the first connecting plate 25. Below each of the two extrusion plates 28, multiple equidistantly arranged pressing blocks 21 are fixed to the outer wall of the lifting rod 14. The inner arc wall of the extrusion plate 28 and the inner arc wall of the two reset plates 281... A single reservoir 29 is fixedly connected between the side arc walls. A first spring 291 is fixedly connected inside the reservoir 29. The middle part of the first spring 291 has an arc-shaped structure. A third weakening groove 292 is opened at each of the two symmetrically arranged bends on the first spring 291. A discharge pipe 293 with a one-way discharge valve is fixedly connected to the liquid outlet in the middle of the reservoir 29. The other end of the discharge pipe 293 extends and connects to the delivery chamber 251 opened inside the first connecting plate 25. The bottom end of the delivery chamber 251 is connected to the pre-storage groove 261 through an opening. The top of each extrusion plate 28 has a vertically arranged push plate 211 integrally formed through a fourth weakening groove 210. The top of each push plate 211 has a pressing rod 212 integrally formed. The pressing rod 212 slides... The movable groove 213 on the first connecting plate 25 is fixed to the other end of the pressing rod 212. The top two ends of the U-shaped plate 214 are integrally formed with horizontally arranged insertion plates 215. The outer side of the insertion plate 215 is movably fitted with guide seats 216. The top of the guide seats 216 is fixed to the inner top wall of the first connecting plate 25. The two bends at the bottom of the U-shaped plate 214 are provided with fifth weakening grooves 2141. The bends of the insertion plate 215 and the U-shaped plate 214 are provided with sixth weakening grooves 217. Multiple slots 218 are provided on the inner walls of both sides of the movable groove. The slots 218 are used to insert the end of the insertion plate 215 away from the sixth weakening groove 217.

[0023] It is worth noting that all components in the adjustable trigger pressurization assembly 2, except for the reservoir 29, and all components in the sealing assembly 3 are made of ABS plastic and are integrally injection molded, which greatly reduces the manufacturing cost for manufacturers. The reservoir 29 is made of polytetrafluoroethylene, which has the characteristics of not being easily oxidized or dissolved by nitric acid, good flexibility, and reliable sealing. The float 15 at the bottom of the lifting rod 14 is threaded, so as to achieve the purpose of being detachable. This makes it easy to install or remove the adjustable trigger-type pressure assembly 2 and its sealing assembly 3. As the float 15 slowly samples rainwater accumulation within the sampling cylinder 13, it moves upward, causing the lifting rod 14 to move the pressing block 21 upward. With the assistance of the upward movement of the float 15, the pressing block can press against the pressing plate 28. This causes the pressing plate 28 to deform between the first weakening groove 271 and the second connecting plate 27, and drives the top of the pressing plate 28 to deform through the fourth weakening groove 210, thus driving the pushing plate 211 upward. This, in conjunction with the action of the pressing rod 212, drives the U-shaped plate 214 through the fifth weakening groove 2141 and the sixth... The weakening groove 217 generates compression deformation, thereby driving the end of the insertion plate 215 to be further stably inserted into the corresponding slot 218, thus effectively ensuring that the extrusion plate 28 is not prone to positional movement during the extrusion process. In addition, during the extrusion process, the reagent liquid in the reservoir 29 can be extruded into the delivery chamber 251 and flow out into the pre-storage slot 261 of the arc-shaped pre-storage box 26. The first spring 291 is set to ensure that the reservoir 29 can quickly return to its original shape after being compressed, so that it can be extruded again in the future.

[0024] Furthermore, such as Figure 1-9As shown, the sealing assembly 3 includes an arched block 34 fixedly connected to the center of the pre-storage groove 261. An arc-shaped channel is reserved between the bottom end of the arched block 34 and the inner bottom wall of the pre-storage groove 261. Two symmetrically arranged arc-shaped sealing plates 33 slide within the arc-shaped channel. The width of the arc-shaped sealing plates 33 is larger than the width of the arched block 34. Inclined guide portions 35 are provided at two positions in the pre-storage groove 261 away from the arched block 34. The ends of the two arc-shaped sealing plates 33 that are far apart are fixed to the inner wall of the arc-shaped channel through second spring pieces 36 with an hourglass-shaped cross-section. A first thinning zone 361 is provided at the two bends in the middle of the two second spring pieces 36. At the two bends of the second spring pieces 36 near the arc-shaped sealing plates 33, Each has a second thinning zone 362. The second spring sheet 36 has a third thinning zone 363 at two bending positions away from the arc-shaped sealing plate 33. Both arc-shaped sealing plates 33 have multiple second through holes 331 arranged in an array along the shape of the arc-shaped sealing plate 33. The second through holes 331 are aligned with the first channel. The top of both arc-shaped sealing plates 33 is fixed with a vertical rod 32 near the arched block 34. One side of the vertical rod 32 is provided with an L-shaped extrusion block 31 integrally formed in the middle of the outer wall of the extrusion plate 28. The end of the L-shaped extrusion block 31 facing the vertical rod 32 is provided with an extrusion slope 311. The top of the arched block 34 has an arc-shaped arched structure. The thickness of the arc-shaped channel is the same as the thickness of the arc-shaped sealing plate 33.

[0025] It is worth noting that when the extrusion plate 28 is pressed, its L-shaped extrusion block 31 drives the extrusion inclined surface 311 to move towards the upright 32, and then extrudes the upright 32, thereby driving the two arc-shaped closed plates 33 to move away from each other in the arc-shaped channel. At the same time, the second spring sheet 36 is deformed under pressure, and with the action of the first thinning zone 361, the second thinning zone 362 and the third thinning zone 363, the second spring sheet 36 is more likely to deform at the thinning zone. In addition, the two arc-shaped closed plates 33 move away from each other. After activation, the first through hole 262 and the second through hole 331 are offset from each other, thereby allowing the reagent liquid to be pre-stored in the pre-storage tank 261. When the extrusion plate 28 is no longer extruded, under the resetting action of the second spring 36, the multiple second through holes 331 on the arc-shaped closed plate 33 are driven to coincide with the corresponding first through hole 262, so that the pre-stored reagent liquid can fall quickly and evenly from the multiple overlapping through holes to different positions in the sampling cylinder 13, thereby greatly improving the efficiency of reagent mixing with rainwater during rainwater sampling. In actual use, first place the sampling cylinder 13 into the bottom wall of the collection cylinder 1 through the inlet 12 on the front side of the collection cylinder 1, ensuring that the sampling cylinder 13 is directly below the funnel 111; the storage bladder 29 stores a preset amount of nitric acid reagent, and through the threaded connection between the mounting sleeve 22 and the bottom opening of the funnel 111, the adjustable trigger-type pressure assembly 2 and the sealing assembly 3 are fixed to the bottom of the funnel 111 as a whole, completing the initial assembly of the device; When precipitation occurs, rainwater flows in through the collection port 11 at the top of the collection cylinder 1, and after being guided by the funnel 111, it is injected into the sampling cylinder 13. As the water level in the sampling cylinder 13 gradually rises, the float 15 floats up due to buoyancy, which drives the lifting rod 14 to move upward along the guide sleeve 141. The guide key 142 cooperates with the guide port to ensure smooth lifting. At the same time, the pressure block 21 on the outer wall of the lifting rod 14 moves upward synchronously, gradually squeezing the arc-shaped extrusion plates 28 on both sides. Under the action of the pressure, the extrusion plate 28 deforms through the first weakening groove 271. On the one hand, it extrudes the inner storage bladder 29, and the first spring 291 inside the storage bladder 29 is compressed and contracted. The reagent flows into the delivery chamber 251 of the first connecting plate 25 through the discharge pipe 293 under the setting of the one-way discharge valve, and then into the pre-storage slot 261 of the arc-shaped pre-storage box 26 through the bottom opening of the delivery chamber 251. On the other hand, the top of the extrusion plate 28 drives the push plate 211 to move upward through the fourth weakening groove 210. The push plate 211 drives the pressure rod 212 to slide along the movable groove 213, thereby causing the U-shaped plate to deform. The insertion plates 215 at both ends extend along the guide seat 216 and are inserted into the slot 218 of the support plate 23, thereby achieving further stability after the two insertion plates 215 are inserted and avoiding position displacement during the extrusion process. At the same time, when the extrusion plate 28 deforms, it drives the L-shaped extrusion block on the outside to move synchronously. The L-shaped extrusion block pushes the corresponding upright 32 through the extrusion inclined surface 311, so that the two arc-shaped closed plates 33 slide away from each other in the arc-shaped channel. Under the auxiliary deformation of the first thinning zone 361, the second thinning zone 362 and the third thinning zone 363, the second spring sheet 36 is compressed and shrinks. The second through hole 331 on the arc-shaped closed plate 33 is offset from the first through hole 262 of the pre-storage tank 261. The pre-storage tank 261 is in a closed state, and the reagent is temporarily stored in the pre-storage tank 261. When it is necessary to adjust the relative position of the extrusion plate 28 and the pressure block 21, the two side walls of the U-shaped plate 214 can be manually pinched to drive the two side walls of the U-shaped plate 214 to deform through the fifth weakening groove 2141 and move towards each other. In addition, with the help of the sixth weakening groove 217 and the guide seat 216, the ends of the insertion plate 215 are driven out of the slot 218, so as to facilitate the adjustment of the relative position of the extrusion plate 28 and the pressure block 21 and flexibly adapt to the reagent dosage requirements under different precipitation scenarios. When the pressure block 21 stops pressing the pressure plate 28, the pressure plate 28 resets, driving the L-shaped pressure block 31 to reset the pressure slope 311, thus relieving the pressure on the upright 32. This, in turn, causes the arc-shaped closed plates 33 to move towards each other under the reset action of the second spring plate 36. The second through hole 331 and the first through hole 262 are then realigned. The reagent in the pre-storage tank 261 is guided through multiple aligned through holes and the guide section 35, falling evenly into the rainwater in the sampling cylinder 13, achieving thorough mixing of the reagent and rainwater. Finally, the sampling cylinder 13 is removed through the inlet / outlet 12, completing the entire precipitation sampling and reagent addition process.

[0026] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A meteorological monitoring precipitation sampling device, comprising a collection cylinder, a collection port at the top of the collection cylinder, a funnel integrally formed on the inner wall of the collection cylinder, a dispensing port on the front side of the collection cylinder, and a sampling cylinder placed on the inner bottom wall of the collection cylinder, characterized in that, The inner wall of the bottom tube of the funnel is fixed with a guide sleeve by three connecting blocks arranged in a ring array. The guide sleeve is movably sleeved on the outside of the lifting rod. A guide key is also fixed to the middle of the back side of the lifting rod. The inner wall of the guide sleeve has a guide opening that matches the guide key. A float is threaded onto the bottom end of the lifting rod. An adjustable trigger-type injection assembly is installed at the bottom end of the funnel; A sealing assembly, which is mounted on the adjustable trigger-type pressurization assembly.

2. The meteorological monitoring precipitation sampling device according to claim 1, characterized in that, The adjustable trigger-type pressurization assembly includes a mounting sleeve threaded to the inner wall of the bottom opening of the funnel. The bottom end of the mounting sleeve has two symmetrically arranged support plates integrally formed. Each of the two support plates has a moving groove with a vertical cross-section of I-shape. A moving seat with a vertical cross-section of I-shape is slidably connected in each moving groove. The bottom ends of the two moving seats are fixed to a first connecting plate with a vertical cross-section of Z-shape. The bottom ends of the first connecting plates are fixed to the middle of the outer arc wall of the arc-shaped pre-storage box. The arc-shaped pre-storage box has a pre-storage groove with an arc structure. The bottom end of the arc-shaped pre-storage box has a plurality of first through holes arranged in an array along the shape of the arc-shaped pre-storage box.

3. The meteorological monitoring precipitation sampling device according to claim 2, characterized in that, On the arc-shaped pre-storage box, a second connecting plate is integrally formed in the middle of the outer arc wall on the side opposite to the first connecting plate. The top of the second connecting plate is integrally formed with an extrusion plate with an arc-shaped vertical cross-section through a first weakening groove. Two symmetrically arranged reset plates are integrally formed on the inner arc wall of the extrusion plate. A second weakening groove is opened between the far end of the two reset plates and the inner arc wall of the extrusion plate. The near end of the two reset plates overlaps the outer wall of the first connecting plate. Below the two extrusion plates, a plurality of equidistant pressing blocks are fixed to the outer wall of the lifting rod.

4. A meteorological monitoring precipitation sampling device according to claim 3, characterized in that, The inner arc wall of the extrusion plate is fixedly connected to the inner arc walls of the two reset plates, and a first spring is fixedly connected inside the spring. The middle part of the first spring has an arc-shaped structure, and a third weakening groove is opened at each of the two symmetrically arranged bends on the first spring. A discharge pipe with a one-way discharge valve is fixedly connected to the liquid outlet in the middle of the spring. The other end of the discharge pipe extends and connects to the delivery chamber opened inside the first connecting plate. The bottom end of the delivery chamber is connected to the pre-storage slot through an opening.

5. A meteorological monitoring precipitation sampling device according to claim 3, characterized in that, Each of the extrusion plates has a vertically arranged push plate integrally formed at its top through a fourth weakening groove. Each of the push plates has a pressing rod integrally formed at its top. Each pressing rod slides in a movable groove opened on the first connecting plate. Each pressing rod has a U-shaped plate fixed to its other end. Each of the top two ends of the U-shaped plate has a horizontally arranged insert plate integrally formed. Each insert plate has a guide seat movably sleeved on its outer side. The top of each guide seat is fixed to the inner top wall of the first connecting plate.

6. A meteorological monitoring precipitation sampling device according to claim 4, characterized in that, The bottom two bends of the U-shaped plate are provided with a fifth weakening groove, and the bends of the insertion plate and the U-shaped plate are provided with a sixth weakening groove. Multiple slots are provided on the inner walls of both sides of the moving groove. Each slot is used to insert into the end of the insertion plate away from the sixth weakening groove.

7. A meteorological monitoring precipitation sampling device according to claim 4, characterized in that, The sealing assembly includes an arched block fixed in the middle of the pre-storage slot. An arc-shaped channel is reserved between the bottom end of the arched block and the inner bottom wall of the pre-storage slot. Two symmetrically arranged arc-shaped sealing plates slide in the arc-shaped channel. The width of the arc-shaped sealing plates is larger than the width of the arched block. Inclined guide portions are provided at two positions in the pre-storage slot away from the arched block.

8. A meteorological monitoring precipitation sampling device according to claim 7, characterized in that, The two arc-shaped sealing plates are fixed to the inner wall of the arc-shaped channel at opposite ends by second spring pieces with an hourglass-shaped cross-section. The two second spring pieces are provided with a first thinning zone at the two bends in the middle, a second thinning zone at the two bends near the arc-shaped sealing plate, and a third thinning zone at the two bends away from the arc-shaped sealing plate.

9. A meteorological monitoring precipitation sampling device according to claim 7, characterized in that, Both of the arc-shaped closed plates are provided with a plurality of second through holes arranged in an array along the shape of the arc-shaped closed plate. The second through holes are aligned with the first channel. A vertical rod is fixedly connected to the top of both arc-shaped closed plates near the arched block. An L-shaped extrusion block is integrally formed in the middle of the outer wall of the extrusion plate on one side of the vertical rod. An extrusion slope is provided on the end of the L-shaped extrusion block facing the vertical rod.

10. A meteorological monitoring precipitation sampling device according to claim 7, characterized in that, The top of the arched block has an arc-shaped arched structure, and the thickness of the arc-shaped channel is the same as the thickness of the arc-shaped sealing plate.

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