Field simulated rainfall runoff collecting device

Abstract

The utility model discloses a field simulated rainfall runoff collecting device which comprises a rainfall component, a surface runoff collecting system, an underground water collector, a water supply device and a rainfall rack, the rainfall assembly comprises a rainfall spray head, a water level column and a rainfall opening and closing device; the surface runoff collecting system comprises accumulated water baffles, control valves, a flow monitoring assembly and a water collecting tank, the accumulated water baffles are connected end to end to form an accumulated water collecting groove, notches are formed in the accumulated water baffles, the control valves are arranged in sliding grooves in the two sides of the notches, and the lower ends of the control valves are connected with movable supporting plates; the other end of the flow monitoring assembly is led to the water collecting tank through a collecting pipe; a plurality of mounting grooves are formed in the upper end of the rainfall rack, the rainfall assemblies are mounted in the mounting grooves, and the underground water collector is arranged in a test land soil profile on one side of the rainfall rack. The water supply, rainfall and runoff functions are integrated, the operation is convenient and fast, and the applicability is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of simulated rainfall, in particular to a field simulated rainfall runoff collection device. Background Art

[0002] In recent years, China has gradually deepened its research on rainwater utilization and soil and water conservation. Such research needs to be based on a large amount of experimental data to reflect the effects of different rainfall characteristics. However, rainfall uncertainty has brought great trouble to the research work. Especially in arid and semi-arid areas, there are too few rainfall events each year to meet the data collection needs. Therefore, more and more researchers use artificial rainfall simulation to conduct experimental research.

[0003] At present, the simulated rainfall devices are mainly developing towards miniaturization and intelligence. The miniature artificial simulated rainfall devices are easy to move and can be better applied to various field experiments; intelligence can effectively control rainfall, making the simulated rainfall more in line with the characteristics of natural rainfall. The existing miniature artificial simulated rainfall devices have a small controllable rainfall area and a fixed rainfall range; the intelligent simulated rainfall devices have high accuracy, but are mostly large in size and difficult to move. Affected by many factors, it is difficult to meet the conditions of field experiments, and the existing rainfall simulation devices are not equipped with a runoff collection system, which is not conducive to the collection and measurement of runoff and corresponding soil erosion. Therefore, it is urgent to design a rainfall device with wide applicability and convenient operation to meet the needs of experimental research on rainfall runoff, soil erosion, etc. Utility Model Content

[0004] The utility model aims to provide a field simulated rainfall runoff collection device to solve the problems existing in the above-mentioned prior art, integrates water supply, precipitation and runoff functions into one, is easy to operate and has wide applicability.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a field simulated rainfall runoff collection device, comprising a rainfall component, a surface runoff collection system, a groundwater collector, a water supply device and a rainfall stand;

[0007] The rainfall assembly comprises a rainfall nozzle, a water level column and a rainfall opener and closeer, wherein the rainfall nozzle is connected to the lower end of the water level column, the rainfall opener and closeer is connected between the rainfall nozzle and the water level column, the upper end of the water level column is connected to a flow control valve through a connecting pipe, and the flow control valve is connected to the water supply device through a water pipe;

[0008] The surface runoff collection system comprises a water accumulation baffle, a control valve, a flow monitoring component and a water collection tank. A plurality of the water accumulation baffles are connected end to end to form a water accumulation collection tank. A notch is provided on one of the water accumulation baffles. The control valve is slidably arranged in the slide grooves on both sides of the notch. The lower end of the control valve is connected to a movable support plate. Both ends of the movable support plate are slidably embedded in the slide grooves on both sides of the notch. One end of the control valve is connected to the water accumulation collection tank, and the other end leads to the water collection tank through a collection pipe. The flow monitoring component is connected to the collection pipe.

[0009] A plurality of installation grooves are provided at the upper end of the rainfall platform, and the installation grooves are used to install the rainfall components. Each rainfall component is connected to the same flow control valve through a connecting pipe, and each connecting pipe is provided with a rainfall regulating valve. The lower end of the rainfall platform is connected to the water accumulation baffle, and each rainfall component is located directly above the water collection groove; the groundwater collector is used to be placed in the soil profile of the test site on one side of the rainfall platform.

[0010] Preferably, the water supply device comprises a water supply tank, a power supply and a water pump, the water pump is arranged in the water supply tank, and the water pump is connected to the water level column through the water pipe.

[0011] Preferably, the rainfall platform comprises an upper bracket, a lower bracket and a longitudinal bracket, the lower bracket comprises four lower bracket branches connected in a U-shape, the longitudinal bracket comprises four longitudinal bracket branches, the lower ends of the four longitudinal bracket branches are respectively connected to four right-angle positions of the lower bracket, the upper bracket comprises two upper bracket branches arranged in a cross shape, the two ends of each upper bracket branch are respectively connected to the upper ends of two opposite longitudinal bracket branches, and a plurality of mounting grooves are arranged on each of the upper bracket branches.

[0012] Preferably, the longitudinal support branch pipe is a retractable pipeline.

[0013] Preferably, the lower end of the water accumulation baffle is a cone-shaped structure.

[0014] Preferably, the groundwater collector comprises a semi-cylindrical water storage chamber, one end of which is provided with a conical component, the other end of which is provided with a water pipe at the bottom, the top plate of the water storage chamber is provided with an infiltration hole, the bottom of the top plate is provided with a filter, one end of the water storage chamber is provided with a threaded connection portion, and a plurality of the water storage chambers can be connected in sequence through the threaded connection portion, and the water storage chamber is also provided with a connecting port, which is used to connect two adjacent water storage chambers through a pipeline.

[0015] Preferably, an adjusting gate is arranged inside the control valve, and an adjusting knob is arranged outside the control valve. The adjusting knob is marked with scales around it, and the adjusting knob is used to control the opening and closing degree of the adjusting gate.

[0016] Preferably, the flow monitoring component includes an electronic timer, a flow meter and a display screen. The electronic timer and the flow meter are both connected to the display screen. A timer control button is provided below the display screen. The flow meter is installed on the collection tube.

[0017] Compared with the prior art, the utility model has achieved the following technical effects:

[0018] The utility model provides a field simulated rainfall runoff collection device which integrates water supply, precipitation and runoff functions, is easy to operate and has wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a field simulated rainfall runoff collection device provided by the utility model;

[0021] Figure 2 It is a structural schematic diagram of the groundwater collector in the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the surface runoff collection system in the utility model;

[0023] Figure 4 It is a schematic diagram of the control valve structure of the surface runoff collection system in the utility model;

[0024] Figure 5 It is a structural schematic diagram of the regulating gate and regulating knob of the control valve of the surface runoff collection system in the utility model;

[0025] Figure 6 It is a structural schematic diagram of the rainfall component in the utility model.

[0026] In the figure: 1-rainfall sprinkler, 2-water level column, 3-rainfall opener and closeer, 4-water delivery pipe, 5-flow control valve, 6-water accumulation baffle, 7-control valve, 8-flow monitoring component, 9-water collecting tank, 10-water collection tank, 11-gap, 12-collecting pipe, 13-water supply tank, 14-upper bracket, 15-lower bracket, 16-longitudinal bracket, 17-water storage chamber, 18-conical component, 19-rainfall regulating valve, 20-infiltration hole, 21-top plate, 22-threaded connection, 23-adjusting gate, 24-adjusting knob, 25-soil profile, 26-tightening screw. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model aims to provide a field simulated rainfall runoff collection device to solve the problems existing in the prior art, integrate water supply, precipitation and runoff functions into one, and has convenient operation and wide applicability.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figure 1-Figure 6 As shown, this embodiment provides a field simulated rainfall runoff collection device, including a rainfall component, a surface runoff collection system, a groundwater collector, a water supply device and a rainfall stand;

[0031] The rainfall assembly includes a rainfall nozzle 1, a water level column 2 and a rainfall opener and closeer 3. The rainfall nozzle 1 is connected to the lower end of the water level column 2, the rainfall opener and closeer 3 is connected between the rainfall nozzle 1 and the water level column 2, the upper end of the water level column 2 is connected to a flow control valve 5 through a connecting pipe, and the flow control valve 5 is connected to a water supply device through a water delivery pipe 4;

[0032] The surface runoff collection system includes a water accumulation baffle 6, a control valve 7, a flow monitoring component 8 and a water collection tank 9. A plurality of water accumulation baffles 6 are connected end to end to form a water accumulation collection tank 10. A notch 11 is provided on a water accumulation baffle 6. The control valve 7 is slidably arranged in the slide grooves on both sides of the notch 11. Tightening screws are arranged at the slide grooves to stabilize the control valve 7. The lower end of the control valve 7 is connected to a movable support plate. Both ends of the movable support plate are slidably embedded in the slide grooves on both sides of the notch 11. One end of the control valve 7 is connected to the water accumulation collection tank 10, and the other end leads to the water collection tank 9 through a collection pipe 12. The flow monitoring component 8 is connected to the collection pipe 12.

[0033] A plurality of installation grooves are provided at the upper end of the rainfall platform, and the installation grooves are used to install rainfall components. Each rainfall component is connected to the same flow control valve 5 through a connecting pipe, and each connecting pipe is provided with a rainfall regulating valve 19. The lower end of the rainfall platform is connected to the water accumulation baffle 6, and each rainfall component is located directly above the water accumulation collection groove 10; the groundwater collector is used to be placed in the soil profile 25 of the test site on one side of the rainfall platform.

[0034] In this embodiment, the water accumulation baffle 6 is arranged on the periphery of the rainfall platform. When in use, the water accumulation baffle 6 is placed on the test site, and the groundwater collector is placed in the soil profile of the test site. The soil profile is selected on one side of the rainfall platform and extends downward to 1 to 1.5 meters according to the water accumulation baffle 6 to collect underground runoff that infiltrates to different depths during the simulated rainfall process. The groundwater collector is placed at different depths according to the test requirements, and the number of placements is adjusted according to actual conditions. Water is provided to the rainfall component through a water supply device, and the simulated rainfall amount is controlled through a flow control valve 5. The water head pressure is adjusted through each rainfall regulating valve 19 to ensure that the water pressure passing through each water level column 2 is consistent, thereby ensuring that the water flow rate and raindrop kinetic energy of each rainfall nozzle 1 are the same and the uniformity of rainfall is ensured. The depth of water accumulation in the water collection tank 10 is controlled by adjusting the height of the control valve 7, and the movable support plate fills the vacancy of the control valve 7 upward, integrating the water supply, precipitation and runoff functions, which is easy to operate and has wide applicability.

[0035] In this embodiment, the water supply device includes a water supply tank 13, a power supply and a water pump. The water pump is arranged in the water supply tank 13, and the water pump is connected to the water level column 2 through the water pipe 4. The power supply provides power to the water pump, and after the water pump is running, the water in the water supply tank 13 is pumped into the water pipe 4, and then enters the water level column 2.

[0036] In this embodiment, the rainfall platform is a detachable pipeline support, and the rainfall platform includes an upper support 14, a lower support 15 and a longitudinal support 16. The lower support 15 includes four lower support branches connected in a square shape, and the longitudinal support 16 includes four longitudinal support branches. The lower ends of the four longitudinal support branches are respectively connected to the four right-angle positions of the lower support 15. The upper support 14 includes two upper support branches arranged in a cross shape, and the two ends of each upper support branch are respectively connected to the upper ends of the two opposite longitudinal support branches. A number of mounting grooves are provided on each upper support branch. When in use, a certain number of rainfall nozzles 1 are placed on the upper support 14. The number of rainfall nozzles 1 is determined by the rainfall area. The rainfall nozzles 1 are rainfall nozzles with three different flow rates. The upper support branch is threadedly connected to the longitudinal support branch through a pipe joint, and the lower support branches and the lower support branches are threadedly connected to the longitudinal support branches through a pipe joint, which is convenient for disassembly and assembly.

[0037] In this embodiment, the longitudinal support branch pipe is a retractable pipe, and the rainfall height and direction can be adjusted by retracting the longitudinal support branch pipe, which is suitable for a variety of environments and conditions.

[0038] In this embodiment, the lower end of the water accumulation baffle 6 is a cone-shaped structure, which is convenient for being driven into the soil.

[0039] In this embodiment, the groundwater collector includes a semi-cylindrical water storage chamber 17, a conical component 18 is provided at one end of the water storage chamber 17, a water storage and water delivery pipe is provided at the bottom of the other end, an infiltration hole 20 is provided on the top plate 21 of the water storage chamber 17, a filter screen is provided at the bottom of the top plate 21, a threaded connection part 22 is provided at one end of the water storage chamber 17, and multiple water storage chambers 17 can be connected in sequence through the threaded connection part 22, and a connection port is also provided on the water storage chamber 17, and the connection port is used to connect two adjacent water storage chambers 17 through a pipeline. The structural design of the conical component 18 is convenient for driving into the soil, and the placement method is to drive it into the test site perpendicular to the soil profile. The top plate 21 of the water storage chamber 17 increases the infiltration area, and the filter screen is used to block soil impurities and improve the collection efficiency of groundwater. The pipeline connection of the water storage chamber 17 is fixed with a waterproof glue to prevent leakage and affect the experiment. The conical component 18 is connected to the water storage structure by bolts.

[0040] In this embodiment, an adjusting gate plate 23 is provided inside the control valve 7, and an adjusting knob 24 is provided outside the control valve 7. The adjusting knob 24 is marked with scales around it, and the adjusting knob 24 is used to control the opening and closing degree of the adjusting gate plate 23. The height of the accumulated water can be accurately controlled by the adjusting gate plate 23 inside the control valve 7, thereby meeting the requirements of the test water accumulation height.

[0041] In this embodiment, the flow monitoring component 8 includes an electronic timer, a flow meter and a display screen. The electronic timer and the flow meter are both connected to the display screen. A timer control button is provided under the display screen. The flow meter is installed on the collection pipe 12 to facilitate recording the outflow time and outflow rate at a certain water accumulation height.

[0042] Compared with the prior art, the advantages of the utility model are that most of the components of the device are detachable and can be assembled by oneself in the field, which is easy to carry; in the absence of continuous power supply in the field, the device has strong sustainability and can ensure accuracy; the water accumulation height can be accurately controlled by a control valve to obtain test data under different test scenarios; the device can adjust the height of the longitudinal bracket to tilt the angle of the simulated rainfall line, thereby changing the direction of rainfall, so as to simulate the characteristics of rainfall under natural conditions and improve the applicability of rainfall to the surrounding environment (topography, wind direction, etc.).

[0043] After the field simulated rainfall runoff collection device of this embodiment is installed at the test site, the following steps are performed:

[0044] Step 1: After connecting the water supply device, set the total rainfall (flow) through the flow control valve 5, set the parameters of the rainfall regulating valve 19, and place a certain number of rainfall sprinklers 1 on the upper bracket 14. The number of rainfall sprinklers 1 is determined by the rainfall area;

[0045] Step 2: Move the control valve 7 to a suitable height according to the test requirements, and the movable support plate connected thereto is driven to fill the bottom gap, and then fix the height of the control valve 7 by tightening the screw 26, and control the gate plate 23 by rotating the adjustment knob 24 to set the water depth;

[0046] Step 3: Adjust the height of the rainfall platform according to the test requirements, fix the longitudinal bracket 16 by the locking nut, start the flow monitoring component 8, open the rainfall shutter 3 under the water level column 2, and then conduct the rainfall experiment; after the experiment, turn off the water pump and flow monitoring component 8, and take out the water collected by the groundwater collector through the syringe.

[0047] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A field simulated rainfall runoff collection device, Features: Includes rainfall components, surface runoff collection systems, groundwater collectors, water supply devices and rainfall stands; The rainfall assembly comprises a rainfall nozzle, a water level column and a rainfall opener and closeer, wherein the rainfall nozzle is connected to the lower end of the water level column, the rainfall opener and closeer is connected between the rainfall nozzle and the water level column, the upper end of the water level column is connected to a flow control valve through a connecting pipe, and the flow control valve is connected to the water supply device through a water pipe; The surface runoff collection system comprises a water accumulation baffle, a control valve, a flow monitoring component and a water collection tank. A plurality of the water accumulation baffles are connected end to end to form a water accumulation collection tank. A notch is provided on one of the water accumulation baffles. The control valve is slidably arranged in the slide grooves on both sides of the notch. The lower end of the control valve is connected to a movable support plate. Both ends of the movable support plate are slidably embedded in the slide grooves on both sides of the notch. One end of the control valve is connected to the water accumulation collection tank, and the other end leads to the water collection tank through a collection pipe. The flow monitoring component is connected to the collection pipe. A plurality of installation grooves are provided at the upper end of the rainfall platform, and the installation grooves are used to install the rainfall components. Each rainfall component is connected to the same flow control valve through a connecting pipe, and each connecting pipe is provided with a rainfall regulating valve. The lower end of the rainfall platform is connected to the water accumulation baffle, and each rainfall component is located directly above the water collection groove; the groundwater collector is used to be placed in the soil profile of the test site on one side of the rainfall platform.

2. The field simulated rainfall runoff collection device according to claim 1, Features: The water supply device comprises a water supply tank, a power supply and a water pump. The water pump is arranged in the water supply tank and is connected to the water level column through the water pipe.

3. The field simulated rainfall runoff collection device according to claim 1, Features: The rainfall platform includes an upper bracket, a lower bracket and a longitudinal bracket, the lower bracket includes four lower bracket branches connected in a U-shape, the longitudinal bracket includes four longitudinal bracket branches, the lower ends of the four longitudinal bracket branches are respectively connected to four right-angle positions of the lower bracket, the upper bracket includes two upper bracket branches arranged in a cross shape, the two ends of each upper bracket branch are respectively connected to the upper ends of two opposite longitudinal bracket branches, and a plurality of mounting grooves are provided on each of the upper bracket branches.

4. The field simulated rainfall runoff collection device according to claim 3, Features: The longitudinal support branch pipe is a retractable pipeline.

5. The field simulated rainfall runoff collection device according to claim 1, Features: The lower end of the water accumulation baffle is a cone-shaped structure.

6. The field simulated rainfall runoff collection device according to claim 1, Features: The groundwater collector includes a semi-cylindrical water storage chamber, one end of which is provided with a conical component, and the other end is provided with a water pipe at the bottom, the top plate of the water storage chamber is provided with an infiltration hole, the bottom of the top plate is provided with a filter, one end of the water storage chamber is provided with a threaded connection part, and multiple water storage chambers can be connected in sequence through the threaded connection part. The water storage chamber is also provided with a connecting port, and the connecting port is used to connect two adjacent water storage chambers through a pipeline.

7. The field simulated rainfall runoff collection device according to claim 1, Features: An adjusting gate is arranged inside the control valve, and an adjusting knob is arranged outside the control valve. The adjusting knob is marked with scales around it, and the adjusting knob is used to control the opening and closing degree of the adjusting gate.

8. The field simulated rainfall runoff collection device according to claim 1, Features: The flow monitoring component includes an electronic timer, a flow meter and a display screen. The electronic timer and the flow meter are both connected to the display screen. A timer control button is provided below the display screen. The flow meter is installed on the collection tube.

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