Device for automatically measuring surface runoff in field and operation method thereof

Abstract

The invention relates to the technical field of surface runoff detection, and discloses a field automatic surface runoff measurement device which comprises a to-be-detected surface, a runoff plot is arranged in the to-be-detected surface, and the runoff plot is composed of a rectangular space and an inverted regular triangle space communicated with the bottom of the rectangular space. Waterproof treatment is carried out in the inverted regular triangle space, a placing platform is arranged outside the front end of the runoff plot on the earth surface to be detected, and a water collecting bucket support, a conical water collecting bucket and a wheel shaft are arranged on the placing platform. According to the device for automatically measuring the surface runoff in the field and the operation method of the device, the runoff is directly measured, the relationship among parameters and formula conversion do not exist, the runoff is directly measured in one step, and the measurement accuracy is improved; the runoff volume can be obtained only by reading the numerical value of the gear counter and multiplying the numerical value by the single-time displacement corresponding to the float switch.

Description

Technical Field

[0001] The invention relates to the technical field of surface runoff detection, and in particular to a device for automatically measuring surface runoff in the field and an operating method thereof. Background Art

[0002] At present, the water level meter method is mainly used for field measurement of surface runoff, that is, a runoff pool is built at the bottom of the runoff area, a water level meter is placed in the runoff pool, and the water volume in the runoff pool, that is, the runoff, is measured by the water level meter. However, the water level meter method requires the construction of a runoff area. A runoff area includes two adjacent runoff areas of 20m*5m and two runoff pools of length*width*height=1m*1m*2m. The cost of a runoff area is about 50,000 yuan. In addition to the runoff area, two water level meters are also required. The unit price of the water level meter is 4,000 yuan / unit, and the cost of the water level meter is 8,000 yuan. Therefore, the cost of measuring surface runoff by the water level meter method is 50,000 to 60,000 yuan. It can be seen that the detection cost is relatively high.

[0003] Secondly, the current water level meter method for measuring runoff mainly uses a water level meter to read the water level height, and the water volume is calculated by multiplying the water level height by the bottom area of ​​the runoff pool. The process of reading the water level height with a water level meter is converted from the water pressure (the water level meter that generally measures runoff is a liquid level water level meter). This process involves two parameters: the atmospheric pressure on the liquid surface and the local gravity acceleration. These two parameters are generally used within a large local area and cannot be accurately measured within the range of the measured runoff area. Therefore, the water level height measured by the water level meter is only an approximate value, not the precise depth. As a result, the calculated runoff volume is only an approximate value. Furthermore, the water level meter method requires a computer to be brought along to collect data and the data must be imported into the computer using a data transmission line. After exporting the data, the computer must be restarted before it can be put back into the runoff pool. In addition, the water and sediment in the runoff pool must be cleaned up each time the data is exported. The water level meter is a field electronic instrument and is immersed in water all year round. It is often prone to low power and instrument damage. If the instrument is damaged, the maintenance cost is high. Therefore, based on the above, it can be seen that the existing technology still needs to be further improved for field measurement of surface runoff. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The invention provides a device for automatically measuring surface runoff in the field and an operating method thereof, which solves the problems raised in the background technology.

[0006] (II) Technical solution

[0007] The present invention provides the following technical solution: a device for automatically measuring surface runoff in the field, comprising a surface to be inspected, a runoff area being opened in the surface to be inspected, the runoff area being composed of a rectangular space and an inverted right triangle space connected to the bottom of the rectangular space, the inverted right triangle space being waterproofed, and a placement platform being arranged outside the front end of the runoff area of ​​the surface to be inspected, a water collecting bucket bracket, a conical water collecting bucket, and an axle being arranged on the placement platform, the conical water collecting bucket being installed on the top of the water collecting bucket bracket, a float switch being installed at the bottom of the conical water collecting bucket, and a guide pipe being arranged between the top of the conical water collecting bucket and the bottom of the runoff area.

[0008] Preferably, a transition net is nested in the port at one end of the diversion pipe to prevent large gravel and soil from entering and causing blockage. The other end of the diversion pipe is buried inside the surface to be inspected and communicates with the internal space of the runoff area to protect the diversion pipe.

[0009] Preferably, one end of the wheel axle is mounted on the rear end structure in the middle of the water collecting bucket bracket through a bearing, the other end of the wheel axle is connected to a storage swing assembly, and a counting component capable of contacting the storage swing assembly is installed in the middle of the water collecting bucket bracket.

[0010] Preferably, the storage swing assembly consists of a first stainless steel bucket and a partition plate mounted inside the first stainless steel bucket, the partition plate divides the space inside the first stainless steel bucket into a left storage space and a right storage space, the rear end structure of the first stainless steel bucket is fixedly connected to the end of the other end of the wheel axle, the counting component consists of two gear counters, and the two gear counters are respectively installed on both sides of the water collecting bucket bracket, and the counting trigger structure on the top of the two gear counters can be pressed into contact with the side surfaces on both sides of the first stainless steel bucket during the process of the first stainless steel bucket tilting left and right.

[0011] Preferably, mounting holes are provided on both sides of the bottom of the water collecting bucket bracket, and the bottom structure of the water collecting bucket bracket and the placement platform can be limitedly installed by long bolts.

[0012] Preferably, the storage swing assembly is composed of a second stainless steel bucket and an elastic reset component, and a rear end structure on one side of the second stainless steel bucket is fixedly connected to one end of the wheel axle.

[0013] Preferably, the elastic reset component is specifically composed of a torsion spring or a spring structure, and the elastic reset component is installed between the other end of the wheel axle and the rear end surface of the second stainless steel dump bucket.

[0014] Preferably, a protective component is installed on the placement platform, and the protective component consists of a shielding plate and a support rod fixedly connected to the bottom of the shielding plate. The shielding plate can completely block the top port of the conical water collecting bucket, and the bottom of the support rod is nested inside the bottom of the surface to be inspected, which can protect the device from damage and prevent rainwater from entering the tipping bucket and causing inaccurate measurement.

[0015] An operating method of a device for automatically measuring surface runoff in the field, comprising the following operating steps:

[0016] S1. A runoff area is opened in the selected surface area to be inspected, and then a placement platform is opened at a suitable position outside the front end of the runoff area, and then the whole device is installed on the placement platform, and the storage swing component in the device adopts a combination of a first stainless steel bucket and a partition, and in the initial use, the first stainless steel bucket is in a static state with the left side higher and the right side lower, and the left storage space set in the first stainless steel bucket is aligned with the bottom of the float switch;

[0017] S2. In the test, water is placed in the runoff area of ​​the surface to be tested, and then enters the interior of the conical water collection bucket through the diversion pipe. After the rainwater in the conical water collection bucket is collected to the upper limit of the float switch, the float switch is turned on and the water in the conical water collection bucket is quickly discharged into the interior of the left storage space;

[0018] S3, after a large amount of water is collected inside the left storage space, under the support of gravity, the axle and the water collecting bucket bracket, it will turn to the left and press against the counting trigger structure of the gear counter set on one side of the water collecting bucket bracket, and the water in the left storage space will pour out, completing one count. At the same time, the right storage space of the first stainless steel tipping bucket is aligned with the bottom of the float switch;

[0019] S4. After the first stainless steel bucket flips to the left, the conical water collection bucket receives the water sent out by the guide pipe again. Similarly, after the rainwater in the conical water collection bucket is collected to the upper limit of the float switch, the float switch is turned on and the water in the conical water collection bucket is quickly discharged into the right storage space.

[0020] S5, after a large amount of water is collected inside the left storage space, it will turn rightward and press against the counting trigger structure of the gear counter set on one side of the water collecting bucket bracket under the support of gravity, the axle and the water collecting bucket bracket, completing one count, and the water in the left storage space will be poured out. At the same time, the left storage space of the first stainless steel tipping bucket is aligned with the bottom of the float switch, thus reciprocating from S2 to S5 until the water is drained;

[0021] S6. After the water is drained, we will obtain the count times of the two gear counters, multiply it by the drainage volume corresponding to the upper limit of the float switch opening, and then we can know the runoff volume and complete the detection work.

[0022] Beneficial Effects

[0023] The present invention has the following beneficial effects:

[0024] 1. The device for automatically measuring surface runoff in the field and its operation method directly measure the runoff. There is no relationship between parameters and no formula conversion. The runoff is measured directly in one step, which increases the measurement accuracy.

[0025] 2. The device for automatically measuring surface runoff in the field and its operation method only need to read the value of the gear counter to obtain data, and then multiply it by the single drainage volume corresponding to the float switch to obtain the runoff volume. After reading the data, it is only necessary to reset the value of the gear counter to zero. Each count will also drain water, so there is no need to clean up water and sediment, which is more convenient to operate and saves time.

[0026] 3. The device for automatically measuring surface runoff in the field and its operation method have achieved mechanization and automation in the detection process. Specifically, protective components are provided to cover the device, which greatly reduces the probability of failure. Even if a failure occurs, the maintenance cost is relatively low.

[0027] 4. The device for automatically measuring surface runoff in the field and its operation method, the combined structure of the device is a mechanical structure, the service life is longer than that of the prior art, the use cost is lower than that of the prior art, the detection accuracy is higher and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a left side schematic diagram of the present invention;

[0029] Figure 2 It is a left side schematic diagram of the water collecting bucket bracket of the present invention;

[0030] Figure 3 It is a front view schematic diagram of the conical water collecting bucket of the present invention;

[0031] Figure 4 It is a top view schematic diagram of the conical water collecting bucket of the present invention;

[0032] Figure 5 It is a three-dimensional schematic diagram of the runoff area of ​​the present invention;

[0033] Figure 6 It is a left side schematic diagram of the protection component of the present invention;

[0034] Figure 7 It is a front view schematic diagram of the second stainless steel tipping bucket of the present invention;

[0035] Figure 8 It is a rear view schematic diagram of the second stainless steel dump bucket of the present invention.

[0036] In the figure: 1. Surface to be inspected; 2. Runoff area; 3. Water collecting bucket bracket; 4. Conical water collecting bucket; 5. Wheel axle; 6. First stainless steel tipping bucket; 7. Gear counter; 8. Diversion pipe; 9. Float switch; 10. Second stainless steel tipping bucket; 11. Elastic reset component; 12. Protective component. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] See also Figure 1-6 A device for automatically measuring surface runoff in the field, comprising a surface to be inspected 1, a runoff area 2 is opened in the surface to be inspected 1, the runoff area 2 is composed of a rectangular space and an inverted right triangle space connected at the bottom of the rectangular space, the inverted right triangle space is waterproofed, and a placement platform is arranged outside the front end of the runoff area 2 of the surface to be inspected 1, a water collecting bucket bracket 3, a conical water collecting bucket 4, and an axle 5 are arranged on the placement platform, the conical water collecting bucket 4 is installed on the top of the water collecting bucket bracket 3, both sides of the bottom of the water collecting bucket bracket 3 are provided with mounting holes, and the bottom structure of the water collecting bucket bracket 3 and the placement platform can be limitedly installed by long bolts, a float switch 9 is installed at the bottom of the conical water collecting bucket 4, and a guide pipe 8 is arranged between the top of the conical water collecting bucket 4 and the bottom of the runoff area 2;

[0040] A transition net is embedded in the port at one end of the diversion pipe 8 to prevent large gravel and soil from entering and causing blockage. The other end of the diversion pipe 8 is buried inside the surface 1 to be inspected and communicates with the internal space of the runoff area 2 to protect the diversion pipe 8. One end of the axle 5 is fitted with the rear end structure of the middle part of the water collecting bucket bracket 3 through a bearing, and the other end of the axle 5 is connected to a storage swing component. A counting component capable of contacting the storage swing component is installed in the middle of the water collecting bucket bracket 3;

[0041] The storage swing assembly is composed of a first stainless steel bucket 6 and a partition plate installed inside the first stainless steel bucket 6. The partition plate divides the space inside the first stainless steel bucket 6 into a left storage space and a right storage space. The rear end structure of the first stainless steel bucket 6 is fixedly connected to the end of the other end of the wheel axle 5. The counting component is composed of two gear counters 7, and the two gear counters 7 are respectively installed on both sides of the water collecting bucket bracket 3. The counting trigger structures on the top of the two gear counters 7 can be pressed and contacted with the side surfaces on both sides of the first stainless steel bucket 6 during the left and right tilting process of the first stainless steel bucket 6;

[0042] A protective component 12 is installed on the placement platform. The protective component 12 consists of a shielding plate and a support rod fixedly connected to the bottom of the shielding plate. The shielding plate can completely block the top port of the conical water collecting bucket 4, and the bottom of the support rod is nested on the inner side of the bottom of the surface 1 to be inspected, which can protect the device from damage and prevent rainwater from entering the tipping bucket and causing inaccurate measurement.

[0043] An operating method of a device for automatically measuring surface runoff in the field, comprising the following operating steps:

[0044] S1. A runoff area 2 is opened in the selected surface area 1 to be inspected, and then a placement platform is opened at a suitable position outside the front end of the runoff area 2, and then the whole device is installed on the placement platform, and the storage swing component in the device adopts a combination of a first stainless steel bucket 6 and a partition, and in the initial use, the first stainless steel bucket 6 is in a static state with the left side higher and the right side lower, and the left storage space set in the first stainless steel bucket 6 is aligned with the bottom of the float switch 9;

[0045] S2. In the test, water is poured into the runoff area 2 in the surface 1 to be inspected, and then enters the interior of the conical water collection bucket 4 through the diversion pipe 8. After the rainwater in the conical water collection bucket 4 is collected to the upper limit of the float switch 9, the float switch 9 is turned on and the water in the conical water collection bucket 4 is quickly discharged into the interior of the left storage space;

[0046] S3, after a large amount of water is collected inside the left storage space, under the support of gravity and the axle 5 and the water collecting bucket bracket 3, it will turn to the left and press against the counting trigger structure of the gear counter 7 set on one side of the water collecting bucket bracket 3, and the water in the left storage space will pour out, completing one count. At the same time, the right storage space of the first stainless steel tipping bucket 6 is aligned with the bottom of the float switch 9;

[0047] S4, after the first stainless steel bucket 6 turns left, the conical water collecting bucket 4 receives the water sent out by the guide pipe 8 again. Similarly, after the rainwater in the conical water collecting bucket 4 is collected to the upper limit of the float switch 9, the float switch 9 is turned on and the water in the conical water collecting bucket 4 is quickly discharged into the right storage space;

[0048] S5, after a large amount of water is collected inside the left storage space, under the support of gravity, the axle 5 and the water collecting bucket bracket 3, it will turn to the right and press against the counting trigger structure of the gear counter 7 set on one side of the water collecting bucket bracket 3, completing one count, and the water in the left storage space is poured out. At the same time, the left storage space of the first stainless steel tipping bucket 6 is aligned with the bottom of the float switch 9, thus reciprocating from S2 to S5 until the water is drained;

[0049] S6. After the water is drained, we will obtain the count times of the two gear counters 7, and multiply it by the drainage volume corresponding to the upper limit of the float switch 9, so as to know the runoff volume and complete the detection work.

[0050] Embodiment 2

[0051] See also Figure 1 , 6 -8, a device for automatically measuring surface runoff in the field, comprising a surface to be inspected 1, a runoff area 2 is opened in the surface to be inspected 1, the runoff area 2 is composed of a rectangular space and an inverted right triangle space connected at the bottom of the rectangular space, the inverted right triangle space is waterproofed, and a placement platform is arranged outside the front end of the runoff area 2 of the surface to be inspected 1, a water collecting bucket bracket 3, a conical water collecting bucket 4, and an axle 5 are arranged on the placement platform, the conical water collecting bucket 4 is installed on the top of the water collecting bucket bracket 3, both sides of the bottom of the water collecting bucket bracket 3 are provided with mounting holes, and the bottom structure of the water collecting bucket bracket 3 and the placement platform can be limitedly installed by long bolts, a float switch 9 is installed at the bottom of the conical water collecting bucket 4, and a guide pipe 8 is arranged between the top of the conical water collecting bucket 4 and the bottom of the runoff area 2;

[0052] A transition net is embedded in the port at one end of the diversion pipe 8 to prevent large gravel and soil from entering and causing blockage. The other end of the diversion pipe 8 is buried inside the surface 1 to be inspected and communicates with the internal space of the runoff area 2 to protect the diversion pipe 8. One end of the axle 5 is fitted with the rear end structure of the middle part of the water collecting bucket bracket 3 through a bearing, and the other end of the axle 5 is connected to a storage swing component. A counting component capable of contacting the storage swing component is installed in the middle of the water collecting bucket bracket 3;

[0053] The storage swing assembly is composed of a second stainless steel bucket 10 and an elastic reset component 11. The rear end structure of one side of the second stainless steel bucket 10 is fixedly connected to one end of the wheel axle 5. The elastic reset component 11 is specifically composed of a torsion spring or a spring structure. The elastic reset component 11 is installed between the other end of the wheel axle 5 and the rear end surface of the second stainless steel bucket 10. The counting component is composed of two gear counters 7, and the two gear counters 7 are respectively installed on both sides of the water collection bucket bracket 3;

[0054] A protective component 12 is installed on the placement platform. The protective component 12 consists of a shielding plate and a support rod fixedly connected to the bottom of the shielding plate. The shielding plate can completely block the top port of the conical water collecting bucket 4, and the bottom of the support rod is nested on the inner side of the bottom of the surface 1 to be inspected, which can protect the device from damage and prevent rainwater from entering the tipping bucket and causing inaccurate measurement.

[0055] An operating method of a device for automatically measuring surface runoff in the field, comprising the following operating steps:

[0056] S1, a runoff area 2 is opened in the selected surface area 1 to be inspected, and then a placement platform is opened at a suitable position outside the front end of the runoff area 2, and then the whole device is installed on the placement platform, and the storage swing component in the device is composed of a second stainless steel tipping bucket 10 and an elastic reset component 11. In the initial use, the second stainless steel tipping bucket 10 is aligned with the bottom of the float switch 9 in a horizontal state;

[0057] S2. In the test, water is poured into the runoff area 2 in the surface 1 to be inspected, and then enters the interior of the conical water collection bucket 4 through the diversion pipe 8. After the rainwater in the conical water collection bucket 4 is collected to the upper limit of the float switch 9, the float switch 9 is turned on and the water in the conical water collection bucket 4 is quickly discharged into the interior of the second stainless steel tipping bucket 10;

[0058] S3, after a large amount of water is collected inside the second stainless steel tipping bucket 10, under the support of gravity and the axle 5 and the water collecting bucket bracket 3, it will turn rightward and press against the counting trigger structure of the gear counter 7 set on one side of the water collecting bucket bracket 3, and the water in the second stainless steel tipping bucket 10 will be poured out, completing one count;

[0059] S4, after the water in the second stainless steel bucket 10 is completely drained, the second stainless steel bucket 10 will be reset to a horizontal state under the reset elastic force of the torsion spring or the spring component in the elastic reset component 11, and the steps S2-S3 are repeated until the water is completely drained;

[0060] S5. After the water is drained, we will obtain the count number of a gear counter 7, and multiply it by the drainage volume corresponding to the upper limit of the float switch 9, so as to know the runoff volume and complete the detection work.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for automatically measuring surface runoff in the field, comprising a surface to be inspected (1), a runoff area (2) being opened in the surface to be inspected (1), and a placement platform being arranged outside the front end of the runoff area (2) on the surface to be inspected (1), a water collecting bucket bracket (3), a conical water collecting bucket (4), and a wheel axle (5) being arranged on the placement platform, the conical water collecting bucket (4) being installed on the top of the water collecting bucket bracket (3), a float switch (9) being installed on the bottom of the conical water collecting bucket (4), and a flow guide pipe (8) being arranged between the top of the conical water collecting bucket (4) and the bottom of the runoff area (2); One end of the wheel axle (5) is mounted on the rear end structure in the middle of the water collecting bucket bracket (3) via a bearing, the other end of the wheel axle (5) is connected to a storage swing component, and a counting component capable of contacting the storage swing component is installed in the middle of the water collecting bucket bracket (3).

2. The device for automatically measuring surface runoff in the field according to claim 1, characterized in that: A transition net is embedded in a port at one end of the guide pipe (8), and the other end of the guide pipe (8) is buried inside the surface to be inspected (1) and communicates with the internal space of the runoff area (2).

3. The device for automatically measuring surface runoff in the field according to claim 1, characterized in that: The storage swing assembly is composed of a first stainless steel bucket (6) and a partition plate mounted inside the first stainless steel bucket (6), wherein the partition plate divides the space inside the first stainless steel bucket (6) into a left storage space and a right storage space, and the rear end structure of the first stainless steel bucket (6) is fixedly connected to the end of the other end of the wheel axle (5).

4. The device for automatically measuring surface runoff in the field according to claim 1, characterized in that: The counting component is composed of two gear counters (7), and the two gear counters (7) are respectively installed on both sides of the water collecting bucket bracket (3), and the counting trigger structures on the top of the two gear counters (7) can be pressed into contact with the side surfaces of both sides of the first stainless steel tipping bucket (6) when the first stainless steel tipping bucket (6) is tilted left and right.

5. The device for automatically measuring surface runoff in the field according to claim 1, characterized in that: Both sides of the bottom of the water collecting bucket bracket (3) are provided with mounting holes, and the bottom structure of the water collecting bucket bracket (3) and the placement platform can be limitedly mounted by long bolts.

6. The device for automatically measuring surface runoff in the field according to claim 1, characterized in that: The storage swing assembly is composed of a second stainless steel bucket (10) and an elastic reset component (11); a rear end structure on one side of the second stainless steel bucket (10) is fixedly connected to one end of the wheel axle (5).

7. The device for automatically measuring surface runoff in the field according to claim 6, characterized in that: The elastic reset component (11) is specifically composed of a torsion spring or a spring structure, and the elastic reset component (11) is installed between the other end of the wheel axle (5) and the rear end surface of the second stainless steel dump bucket (10).

8. The device for automatically measuring surface runoff in the field according to claim 1, characterized in that: A protective component (12) is installed on the placement platform, and the protective component (12) consists of a shielding plate and a support rod fixedly connected to the bottom of the shielding plate. The shielding plate can completely shield the top port of the conical water collection bucket (4), and the bottom of the support rod is nested inside the bottom of the surface to be inspected (1).

9. The device for automatically measuring surface runoff in the field according to claim 1, characterized in that: The runoff area (2) is composed of a rectangular space and an inverted right triangle space connected to the bottom of the rectangular space, and the inverted right triangle space is waterproofed.

10. An operating method of a field automatic surface runoff measurement device as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1. A runoff area (2) is opened in the selected area of ​​the surface to be inspected (1), and then a placement platform is opened at a suitable position outside the front end of the runoff area (2), and then the entire device is installed on the placement platform, and the storage swing component in the device adopts a combination of a first stainless steel bucket (6) and a partition, and in the initial use, the first stainless steel bucket (6) is in a static state with the left side higher and the right side lower, and the left storage space set in the first stainless steel bucket (6) is aligned with the bottom of the float switch (9); S2. In the test, water is poured into the runoff area (2) in the surface to be tested (1), and then enters the interior of the conical water collection bucket (4) through the guide pipe (8). After the rainwater in the conical water collection bucket (4) is collected to the upper limit of the opening of the float switch (9), the float switch (9) is opened and the water in the conical water collection bucket (4) is quickly discharged into the interior of the left storage space; S3, after a large amount of water is collected inside the left storage space, under the support of gravity and the wheel axle (5) and the water collecting bucket bracket (3), it will turn to the left and press against the counting trigger structure of the gear counter (7) set on one side of the water collecting bucket bracket (3), and the water in the left storage space will pour out, completing one count. At the same time, the right storage space of the first stainless steel tipping bucket (6) is aligned with the bottom of the float switch (9); S4, when the first stainless steel bucket (6) turns to the left, the conical water collecting bucket (4) receives the water guided by the guide pipe (8) again. Similarly, after the rainwater in the conical water collecting bucket (4) is collected to the upper limit of the float switch (9), the float switch (9) is opened and the water in the conical water collecting bucket (4) is quickly discharged into the right storage space; S5, after a large amount of water is collected inside the left storage space, under the support of gravity and the wheel axle (5) and the water collecting bucket bracket (3), it will turn to the right and press against the counting trigger structure of the gear counter (7) set on one side of the water collecting bucket bracket (3), completing one count, and the water in the left storage space is poured out. At the same time, the left storage space of the first stainless steel tipping bucket (6) is aligned with the bottom of the float switch (9), thus reciprocating from S2 to S5 until the water is drained; S6. After the water is drained, we obtain the counts of the two gear counters (7) and multiply them by the drainage volume corresponding to the upper limit of the float switch (9) to obtain the runoff volume, thus completing the detection work.

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