Rainwater splash-proof high-precision collecting and measuring device

Abstract

The invention belongs to the technical field of measurement and discloses a rainwater splash-proof high-precision collecting and measuring device which comprises a container body, a rainwater collecting opening is formed in the upper portion of the container body, a conical rainwater collecting hopper is integrally connected to the lower portion of the container body, and a water drainage opening is formed in the bottom of the conical rainwater collecting hopper. The splash-proof net is detachably arranged in the container body, a supporting table edge used for supporting the splash-proof net is arranged on the inner wall of the container body, and the supporting table edge is located above the conical rain collecting hopper; the lower part of the container body is connected with the collecting unit, and the collecting unit is positioned below the water outlet; and the measuring unit is electrically connected with the magnetic sensor. The height from the splash-proof net to the rain collecting opening is lower than the traditional design height, the overall structure is better optimized, falling rainwater is scattered and divided into countless small raindrops by designing the splash-proof net, the kinetic energy of the raindrops is reduced, the impact area is reduced, the rainwater collecting accuracy is improved, and the measurement result is more reliable.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of measurement, and relates to a rainwater splash-proof high-precision collection measuring device. BACKGROUND

[0002] The traditional way of collecting rainwater is through a large bucket or a high bucket. When rainwater falls into the large bucket or the high bucket, splashing occurs, and part of the rainwater splashes out, reducing the amount of rainwater collected in the large bucket or the high bucket, resulting in inaccurate measurement data. In addition, the large bucket or the high bucket needs to use a large volume structure to better collect rainwater, which is very inconvenient to move each time, especially in remote mountainous areas where it is difficult to walk. On-site operation is more troublesome.

[0003] In order to better facilitate rainwater collection, a small volume structure with a height of about 50mm is designed. For small rainwater collection, it indeed prevents a large amount of rainwater from splashing, but for heavy rain, after the rainwater falls freely and quickly, part of it will splash and exceed 50mm in height, resulting in a decrease in the amount of rainwater collected, and inaccurate measurement data.

[0004] Therefore, it is urgent to design a device with splash-proof function and high-precision rainwater collection to better realize the accuracy of rainwater volume collection and measurement. SUMMARY

[0005] The application provides a rainwater splash-proof high-precision collection measuring device, which aims to solve the problem of large data deviation and inaccurate data measurement caused by the lack of splash-proof function in existing rainwater collection.

[0006] To achieve the above purpose, the application provides a rainwater splash-proof high-precision collection measuring device, which comprises:

[0007] A container body is provided with a rain collecting opening at the upper part, the rain collecting opening is set according to the standard water receiving area, a conical rain collecting bucket is integrally connected at the lower part of the container body, and a drain opening is arranged at the bottom of the conical rain collecting bucket;

[0008] A splash-proof net is detachably arranged in the container body, and a support platform edge for supporting the splash-proof net is arranged on the inner wall of the container body, which is located above the conical rain collecting bucket;

[0009] A collection unit is connected at the lower part of the container body, which is located below the drain opening, and comprises a base, a standard amount of tipping bucket container, a magnet, and a magnetic force sensor. The base is arranged at the bottom of the container body, the standard amount of tipping bucket container is arranged on the base and can swing, the upper end of the standard amount of tipping bucket container is located directly below the drain opening, the magnet is arranged on the side edge of the bottom surface of the standard amount of tipping bucket container, and the magnetic force sensor is arranged on the base;

[0010] The measuring unit is electrically connected to the magnetic sensor and is used to receive the pulse signal of the magnetic sensor and calculate the actual water receiving weight and splash protection rate under the rated unit.

[0011] Preferably, the splash-proof net includes a narrow metal frame, a fine metal mesh and a handle. The narrow metal frame is fully covered and fixedly installed with a fine metal mesh. Handles are provided on both sides of the narrow metal frame. The number of fine metal meshes is 50-100 meshes. The surface of the splash-proof net is coated with a hydrophobic coating to reduce the adhesion of rainwater on the surface of the fine mesh and accelerate the falling of rainwater.

[0012] Preferably, the outer contour edge of the narrow metal frame is integrally connected with a downward-folded flat flange or metal edging to prevent the edge from scratching hands.

[0013] Preferably, the narrow metal frame is formed as an integral part by an injection molding process and is embedded with an edge to prevent the edge from scratching hands.

[0014] Preferably, the inner wall of the conical rain collecting hopper is provided with a plurality of guide grooves, which extend from top to bottom and are connected to the drain outlet, and are used to guide the rainwater falling through the splash screen to converge to the drain outlet, thereby reducing the residual rainwater on the inner wall of the conical rain collecting hopper.

[0015] Preferably, the support platform edge includes a first supporting edge and a second supporting edge that are relatively arranged, the height of the first supporting edge is higher than the second supporting edge, and the two sides of the splash-proof net are respectively placed on the first supporting edge and the second supporting edge, so that the splash-proof net forms an inclination angle of 10-45° to reduce the positive pressure impact between rainwater and the metal mesh and reduce water accumulation.

[0016] Preferably, when the rainwater received by the standard quantity tipping bucket container reaches a preset weight, the magnet and the magnetic sensor cooperate with each other to trigger the standard quantity tipping bucket container to swing downward to discharge rainwater. At the same time, the magnetic sensor sends a pulse signal to the measuring unit and calculates the actual water receiving weight, wherein the actual water receiving weight is obtained by the formula: Vactual = Vbucket × n, Vactual is the actual water receiving weight, Vbucket is the standard capacity of the standard quantity tipping bucket container, n is the number of swings of the standard quantity tipping bucket container accumulated by the pulse signal, and n is a positive integer.

[0017] Preferably, the actual rainfall is calculated based on the actual water receiving weight obtained, wherein the actual rainfall is calculated by the formula: h=Vactual / S, h is the actual rainfall, and S is the standard water receiving area of ​​the rain receiving outlet.

[0018] Preferably, the measuring unit receives the pulse signal times within 5 minutes and converts it into the actual total rainfall volume Vtotal, wherein the measuring unit pre-stores a standard simulated rainfall volume Vstandard of 25.4 mL / 5 minutes.

[0019] Preferably, the measuring unit calculates the actual water loss rate within 5 minutes based on the actual total rainfall volume Vtotal and the standard simulated rainfall volume Vstandard, the formula is Ploss= (Vstandard-Vtotal) / Vstandard*100%, Ploss is the actual water loss rate, Vstandard=25.4ml, the splash-proof rate of collected rainwater is calculated based on the obtained actual water loss rate, the formula is eta= (Pgoal-Pactual) / Pgoal*100%, Pgoal=9.4% is the target water loss rate of the preset splash-proof net, and eta is the splash-proof rate, which is used to quantify the splash-proof effect of the splash-proof net.

[0020] The beneficial effects of the present application relative to the prior art are:

[0021] The present application provides a rainwater splash-proof high-precision collection and measurement device, which disperses and divides the falling rainwater into countless tiny droplets through the design of the splash-proof net, reduces the kinetic energy of the raindrops, and reduces the effective impact area of the linear grid structure, so that the raindrops can be easily restrained when the raindrops contact the surface tension of the splash-proof net surface, thereby improving the accuracy of rainwater collection, making the measurement result more reliable, and the height of the splash-proof net to the rain collecting port is lower than the height of the traditional design, the overall structure is better optimized, and the accuracy of collecting rainwater is improved.

[0022] To more clearly illustrate the structural features and effects of the present application, the present application will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0024] Figure 2 is a schematic diagram of the exploded structure of the present application;

[0025] Figure 3 is a schematic diagram of the cross-sectional structure of the present application;

[0026] Figure 4 is a schematic diagram of the cross-sectional structure of the present application;

[0027] Figure 5 is a schematic diagram of the splash-proof net in the present application;

[0028] Figure 6 is a schematic diagram of the three-dimensional structure of the splash-proof net in the present application;

[0029] Figure 7 is a schematic diagram of the three-dimensional structure of the splash-proof net in the present application; Figure 5 is a schematic diagram of the splash-proof net in the present application;

[0030] REFERENCE NUMERALS

[0031] 1. Container body; 2. Rain collection port; 3. Conical rain collection hopper; 4. Drainage outlet; 5. Splash screen; 6. Support edge; 7. Collection unit; 8. Base; 9. Standard tipping bucket container; 10. Narrow metal frame; 11. Fine metal mesh; 12. Handle; 13. Flattened flange; 14. Diversion channel; 15. First supporting edge; 16. Second supporting edge. DETAILED DESCRIPTION

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0033] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] To achieve the above objectives, the present invention provides a rainwater splash-proof high-precision collection and measurement device, referring to Figures 1-6 Shown, including:

[0035] The container body 1 is provided with a rain collecting port 2 on the upper part of the container body 1, and the rain collecting port 2 is set according to the standard water receiving area. The lower part of the container body 1 is integrally connected with a conical rain collecting hopper 3, and the bottom of the conical rain collecting hopper 3 is provided with a drain port 4;

[0036] A splash screen 5 is detachably provided in the container body 1, and a support edge 6 for supporting the splash screen 5 is provided on the inner wall of the container body 1. The support edge 6 is located above the conical rain collecting hopper 3;

[0037] The collecting unit 7 is connected to the lower part of the container body 1 and is located below the drain outlet 4. The collecting unit 7 includes a base 8, a standard volume tipping bucket container 9, a magnet, and a magnetic sensor. The bottom of the container body 1 is provided with a base 8, and a swingable standard volume tipping bucket container 9 is provided on the base 8. The upper end of the standard volume tipping bucket container 9 is located directly below the drain outlet 4. A magnet is provided on the side of the bottom surface of the standard volume tipping bucket container 9, and a magnetic sensor is provided on the base 8;

[0038] The measuring unit is electrically connected with the magnetic force sensor, and is used for receiving a pulse signal of the magnetic force sensor and calculating an actual water receiving weight under a rated unit and a splash-proof rate.

[0039] In the embodiment, the standard water receiving area meets the standard water receiving area requirement of the meteorological monitoring equipment, the standard water receiving area = 5373 mm2, the magnet is a neodymium-iron-boron strong magnet, the magnetic attraction response is sensitive, and the conventional height needs to be kept above 50 mm to prevent splashing. The height of the splash-proof net 5 to the rain receiving opening 2 is 8-10 mm, which reduces the rainwater loss of the rain adhering to the inner wall area of the small rain, disperses the falling rainwater into countless small raindrops through the design of the splash-proof net 5, reduces the kinetic energy of the raindrops, the linear grid structure effectively reduces the impact area of the rainwater, and when the raindrops contact the surface tension of the surface of the splash-proof net 5, the raindrops can be easily restrained from splashing out, solving the drawbacks of the conventional rain collection, breaking through the limitation of the high edge to prevent splashing, realizing the low edge effective splash-proof and more accurate rainwater collection, and effectively improving the accuracy of the rainwater collection, so that the measurement result is more reliable. The measuring unit can be an external connection device.

[0040] Further, the splash-proof net 5 includes a metal narrow frame 10, a metal fine net 11 and a handle 12, the metal narrow frame 10 is fully covered and fixedly installed with the metal fine net 11, both sides of the metal narrow frame 10 are provided with the handle 12, the number of the metal fine net 11 is 50-100 meshes, and the surface of the splash-proof net 5 is coated with a hydrophobic coating for reducing the adhesion of the rainwater on the surface of the fine net and accelerating the falling of the rainwater.

[0041] In the embodiment, the splash-proof net 5 has two structures for deburring and preventing the edge from scratching the hand, one is that the metal narrow frame 10 is integrally connected with a downwardly folded flat pressing flange 13 or a metal edge on the outside profile edge, and the metal edge can be a round edge, an arc-shaped edge or an inwardly folded edge, so that the edge does not scratch the hand; and the other is that the metal narrow frame 10 is integrally coated with an edge through an injection molding process, both of which can prevent the edge from scratching the hand. Preferably, the flat pressing flange 13 has a width of about 2 mm and is formed by sheet metal process, the edge is smooth without burrs, and the edge does not scratch the hand, the metal fine net 11 is selected from 80-mesh 304 stainless steel net, the wire diameter is 0.12 mm, and the mesh size is 0.18 mm, which can effectively divide the raindrops and will not hinder the falling of the rainwater, the surface of the splash-proof net 5 is coated with a polytetrafluoroethylene hydrophobic coating for reducing the adhesion of the rainwater on the surface of the fine net and accelerating the falling of the rainwater, and the splash-proof net 5 can be disassembled and cleaned to ensure the reliability of the rainwater collection. Of course, compared with the preferred 80-mesh, when the metal fine net 11 is selected from 50-mesh net, the raindrop division effect is weaker, and part of the large raindrops are still easy to splash, and when the metal fine net 11 is selected from 100-mesh net, the mesh of the metal fine net 11 is easy to be blocked and needs to be cleaned frequently, and the optimal balance between the splash-proof effect and the maintenance frequency is achieved.

[0042] Furthermore, a plurality of guide grooves 14 are provided on the inner wall of the conical rain collecting hopper 3. The guide grooves 14 extend from top to bottom and are connected to the drain outlet 4. There are four guide grooves 14, which are evenly distributed on the inner wall of the rain collecting hopper. They are used to guide the rainwater falling through the splash-proof net 5 to converge to the drain outlet 4, reduce the residual rainwater on the inner wall of the conical rain collecting hopper 3, and guide the rainwater to flow rapidly along the guide grooves 14.

[0043] Furthermore, the support edge 6 includes a first supporting edge 15 and a second supporting edge 16 that are relatively arranged, and the height of the first supporting edge 15 is higher than that of the second supporting edge 16. The two sides of the splash-proof net 5 are respectively placed on the first supporting edge 15 and the second supporting edge 16, so that the splash-proof net 5 forms an inclination angle of 10-45° to reduce the positive pressure impact between rainwater and the metal mesh 11 and reduce water accumulation.

[0044] In this embodiment, one way to support the platform edge 6 is to set it horizontally. Figure 3 As shown, the splash screen 5 is horizontally arranged on the support edge 6, and the splashing degree of rainwater is relatively high; in the second mode, the support edge 6 adopts the height setting of the first support edge 15 and the second support edge 16, reference Figure 4 As shown. The height difference design of the support edge 6 optimizes the installation posture of the splash screen 5. When the splash screen 5 is installed horizontally and rainwater hits the surface of the splash screen 5 vertically, some of the rainwater will splash horizontally. A 30° tilt angle is preferably set so that rainwater hits the metal mesh 11 of the splash screen 5 in an oblique manner. The impact force is decomposed into two components, the vertical direction and the force along the surface of the metal mesh 11. The force along the surface of the metal mesh 11 pushes the rainwater to flow rapidly downward, reducing horizontal splashing. At the same time, the tilted structure prevents rainwater from accumulating on the surface of the metal mesh 11. The support edge is injection molded integrally with the container body 1, without any joint gaps, preventing rainwater from seeping into the base 8 through the gaps in the support edge.

[0045] Furthermore, when the rainwater received by the standard dump bucket container 9 reaches a preset weight, the magnet and the magnetic sensor cooperate with each other, triggering the standard dump bucket container 9 to swing downward to discharge the rainwater. At the same time, the magnetic sensor sends a pulse signal to the measuring unit. The measuring unit receives the pulse signal number within 5 minutes and performs the following processing:

[0046] 1. The actual water receiving weight is calculated using the formula: Vactual = Vdou × n, where Vactual is the actual water receiving weight, Vdou is the standard capacity of the standard tipping bucket container 9, and n is the number of swings of the standard tipping bucket container 9 accumulated by the pulse signal, and n is a positive integer;

[0047] 2. Calculate the actual rainfall using the formula: h=Vactual / S, where h is the actual rainfall and S is the standard water receiving area of ​​rainwater collection outlet 2. Standard water receiving area = 5373 mm²;

[0048] 3. The measurement unit receives the pulse signal number within 5 minutes and converts it to the actual total rainfall volume Vtotal. The measurement unit pre-stores a standard simulated rainfall volume V of 25.4 mL / 5 minutes. Here, based on the density of water = 1 g / cm^3, that is, every 1 cm^3 of water has a mass of exactly 1 g. The mass unit of the actual rainfall h is converted into the volume unit of the actual total rainfall volume Vtotal to obtain the actual total rainfall volume Vtotal.

[0049] 4. Calculate the actual water loss rate in 5 minutes using the formula Ploss = (Vstandard - Vtotal) / Vstandard × 100%. Ploss is the actual water loss rate, and Vstandard = 25.4 mL.

[0050] 5. The splash-proof rate of collected rainwater is calculated using the formula η=(Pmesh-Pact) / Pmesh×100%. Pmesh=9.4% is the target water loss rate of the preset splash-proof net 5, and η is the splash-proof rate, which is used to quantify the splash-proof effect of the splash-proof net 5.

[0051] In an optional experimental embodiment, 25.4 mL of water was dropped from a height of 12 meters within 5 minutes, and the amount of water collected was observed with and without the splash screen 5. To avoid contingency in a single experiment, the data is the average of multiple experiments. By comparing the water loss rates below, it can be seen that after adding the splash screen 5, the water loss rate dropped from 33% to 9.4%. At the same time, the splashing phenomenon observed in combination with slow-motion photography was significantly reduced, which verified the effectiveness of the splash screen 5 from an experimental perspective.

[0052] The following is the experimental data:

[0053] Table 1

[0054]

[0055] Without splash screen: weighed collected water volume: 17 mL, water loss: 25.4 mL - 17 mL = 8.4 mL, actual water loss rate P loss = 8.4 / 25.4 × 100% ≈ 33%;

[0056] After adding the splash screen: weighed collected water volume: 23 mL, water loss: 25.4 mL - 23 mL = 2.4 mL, actual water loss rate P loss = 2.4 / 25.4 × 100% ≈ 9.4%;

[0057] Experimental conclusion: The device designed with splash screen 5 has better advantages.

[0058] In conclusion, the present application provides a rainwater splash-proof high-precision collection and measurement device. The splash-proof net 5 is designed to scatter and divide the falling rainwater into countless tiny droplets, reducing the kinetic energy of the raindrops. The linear grid structure also reduces the effective impact area, making it easier for the raindrops to be restrained by the surface tension of the splash-proof net 5 wire mesh surface when they come into contact with it, thereby improving the accuracy of rainwater collection and making the measurement results more reliable. The height of the splash-proof net 5 to the rain collection opening is lower than the traditional design height, and the overall structure is better optimized while improving the accuracy of rainwater collection.

[0059] The technical principles of the present application are described above in conjunction with specific embodiments, which are only preferred embodiments of the present application. The protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the scope of the present application are within the protection scope of the present application. Other specific embodiments of the present application that can be conceived by those skilled in the art without creative effort will also fall within the protection scope of the present application.

Claims

1. A high-precision rainwater splash-proof collection and measurement device, characterized in that: include: A container body, wherein the upper portion of the container body is provided with a rain collection port, the rain collection port is set according to the standard water receiving area, the lower portion of the container body is integrally connected with a conical rain collecting hopper, and the bottom of the conical rain collecting hopper is provided with a drain port; A splash-proof net is detachably provided in the container body, and a support edge for supporting the splash-proof net is provided on the inner wall of the container body, and the support edge is located above the conical rain collecting hopper; A collection unit is connected to the lower part of the container body and is located below the drain outlet. The collection unit includes a base, a standard volume tipping bucket container, a magnet, and a magnetic sensor. A base is provided at the bottom of the container body, and a swingable standard volume tipping bucket container is provided on the base. The upper end of the standard volume tipping bucket container is located directly below the drain outlet. A magnet is provided on the side of the bottom surface of the standard volume tipping bucket container, and a magnetic sensor is provided on the base. The measuring unit is electrically connected to the magnetic sensor and is used to receive the pulse signal of the magnetic sensor and calculate the actual water receiving weight and splash protection rate under the rated unit.

2. The rainwater splash-proof high-precision collection and measurement device according to claim 1, characterized in that: The splash-proof net includes a narrow metal frame, a fine metal mesh and a handle. The narrow metal frame is fully covered and fixedly installed with a fine metal mesh. Handles are provided on both sides of the narrow metal frame. The number of fine metal meshes is 50-100 meshes. The surface of the splash-proof net is coated with a hydrophobic coating to reduce the adhesion of rainwater on the surface of the fine mesh and accelerate the falling of rainwater.

3. The rainwater splash-proof high-precision collection and measurement device according to claim 2, characterized in that: The outer contour edge of the narrow metal frame is integrally connected with a downward-folded flat flange or metal edging to prevent the edge from scratching hands.

4. The rainwater splash-proof high-precision collection and measurement device according to claim 2, characterized in that: The narrow metal frame is formed into an integral package through an injection molding process and is embedded with an edge to prevent the edge from scratching hands.

5. The rainwater splash-proof high-precision collection and measurement device according to claim 2, characterized in that: The inner wall of the conical rain collecting hopper is provided with a plurality of guide grooves, which extend from top to bottom and are connected with the drain outlet, and are used to guide the rainwater falling through the splash screen to converge to the drain outlet, thereby reducing the residual rainwater on the inner wall of the conical rain collecting hopper.

6. The rainwater splash-proof high-precision collection and measurement device according to claim 2, characterized in that: The support platform edge includes a first supporting edge and a second supporting edge arranged opposite to each other, the height of the first supporting edge is higher than the second supporting edge, and the two sides of the splash-proof net are respectively placed on the first supporting edge and the second supporting edge, so that the splash-proof net forms an inclination angle of 10-45° to reduce the positive pressure impact between rainwater and the metal mesh and reduce water accumulation.

7. The rainwater splash-proof high-precision collection and measurement device according to claim 1, characterized in that: When the rainwater received by the standard bucket container reaches a preset weight, the magnet and the magnetic sensor are magnetically attracted to each other, triggering the standard bucket container to swing downward to discharge rainwater. At the same time, the magnetic sensor sends a pulse signal to the measuring unit and calculates the actual water receiving weight, wherein the actual water receiving weight is obtained by the formula: Vactual = Vbucket × n, Vactual is the actual water receiving weight, Vbucket is the standard capacity of the standard bucket container, n is the number of swings of the standard bucket container accumulated by the pulse signal, and n is a positive integer.

8. The rainwater splash-proof high-precision collection and measurement device according to claim 7, characterized in that: The actual rainfall is calculated based on the actual water receiving weight obtained, wherein the actual rainfall is calculated by the formula: h=Vactual / S, h is the actual rainfall, and S is the standard water receiving area of ​​the rain receiving outlet.

9. The rainwater splash-proof high-precision collection and measurement device according to claim 8, characterized in that: The measuring unit receives the pulse signal times within 5 minutes and converts it into the actual total rainfall volume Vtotal, wherein the measuring unit pre-stores a standard simulated rainfall volume Vstandard of 25.4 mL / 5 minutes.

10. The rainwater splash-proof high-precision collection and measurement device according to claim 9, characterized in that: The measuring unit calculates the actual water loss rate within 5 minutes based on the actual total rainfall volume Vtotal and the standard simulated rainfall volume Vstandard. The formula is Ploss=(Vstandard-Vtotal) / Vstandard×100%, Ploss is the actual water loss rate, and Vstandard=25.4mL. The splash prevention rate of the collected rainwater is calculated based on the obtained actual water loss rate. The formula is η=(Pmesh-Pactual) / Pmesh×100%, Pmesh=9.4% is the target water loss rate of the preset splash prevention net, and η is the splash prevention rate, which is used to quantify the splash prevention effect of the splash prevention net.

Images