Modularized rainwater collecting device

Abstract

The utility model discloses a modularized rainwater collecting device, and belongs to the technical field of rainwater collection. The system is composed of a rain gauge, a classified storage module, a classified collection module and a control module, the modules are stacked in sequence, and the control module is connected outside the classified collection module. The rain gauge module comprises a first shell, a rain collecting funnel and a tipping bucket type rain gauge below the rain collecting funnel, and when a threshold value is reached, a tipping bucket rotates to generate a power signal. The classified storage module is provided with a second shell, a receiving funnel, an electric classified five-way ball valve and four rainwater collecting bins, and an outlet of the ball valve is connected with the rainwater collecting bins. The classified collection module comprises a third shell, an electric collection five-way ball valve, an electric three-way ball valve, a flow meter, a drainage pipe and an electric rotating disc with a rainwater collection container. The control module is electrically connected with all the components and controls the corresponding ball valves according to electric signals of the tipping-bucket rain gauge and the like, and rainwater is collected according to the rainfall intensity. The purpose of collecting rainwater according to the rainfall intensity can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rainwater collection device, more particularly in modularization rainwater collection device. BACKGROUND

[0002] Rainwater collection has important basic significance in environmental monitoring, ecological protection and related scientific research fields.

[0003] The existing rainwater collection device, such as the rainwater automatic collection device disclosed in the announcement No. CN112710514A, uses the mechanical rotation structure of the spring set and the uniform speed gear set as the rotary driving device to drive the container collecting rainwater to rotate, thereby collecting rainwater in different time periods.

[0004] Different rainwater intensities have different scouring and dissolving capacities for atmospheric pollutants, and heavy rainfall can carry more atmospheric pollutants, which is more representative in the study of atmospheric pollution. Based on this, it is necessary to collect rainwater during heavy rainfall to analyze atmospheric pollution. However, in the prior art, rainwater can only be collected in different time periods, and the rainwater collected in a certain time period may not be heavy rainfall, but may be rainwater mixed with different rainwater intensities, which leads to insufficient representativeness of the rainwater collected by the prior art in the study of atmospheric pollution.

[0005] Based on the deficiencies of the prior art, it is necessary to design a modular rainwater collection device that can collect rainwater according to rainwater intensity. CONTENT OF THE UTILITY MODEL

[0006] The utility model provides modularization rainwater collection device, can collect rainwater according to rainwater intensity.

[0007] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a modular rainwater collection device, characterized by comprising a rain gauge module, a classification storage module, a classification collection module and a control module; the rain gauge module, the classification storage module and the classification collection module are stacked from top to bottom, and the control module is connected outside the classification collection module.

[0008] The rain gauge module comprises:

[0009] A first housing;

[0010] A rainwater collection funnel is fixedly connected in the cavity of the first housing and is used to collect and concentrate rainwater at the bottom thereof;

[0011] A tipping bucket rain gauge is below the rainwater collection funnel and is used to receive the rainwater flowing out of the rainwater collection funnel, can rotate and generate an electrical signal when the rainfall reaches the tipping bucket threshold value thereof;

[0012] The classification storage module comprises:

[0013] A second housing;

[0014] A receiving funnel is fixed in the cavity of the second shell and is used to receive the rainwater flowing out of the rain collector of the tipping bucket rain gauge;

[0015] An electric classification five-way ball valve is installed at the lower end of the receiving funnel, and the electric classification five-way ball valve has one inlet and four outlets, wherein the inlet of the electric classification five-way ball valve is connected and communicated with the lower end of the receiving funnel.

[0016] Four rain collecting bins are fixed in the cavity of the second shell and are located below the electric classification five-way ball valve, and the four outlets of the electric classification five-way ball valve are respectively communicated with the four rain collecting bins.

[0017] The classification collecting module comprises:

[0018] A third shell;

[0019] An electric collecting five-way ball valve is installed at the lower end of the four rain collecting bins, and the electric collecting five-way ball valve has four inlets and one outlet, and the four inlets of the electric collecting five-way ball valve are respectively connected and communicated with the bottom ends of the four rain collecting bins.

[0020] An electric three-way ball valve is installed at the lower end of the electric collecting five-way ball valve, and the electric three-way ball valve has one inlet and two outlets, and the inlet of the electric three-way ball valve is communicated with the outlet of the electric collecting five-way ball valve; a flow meter is installed at the inlet of the electric three-way ball valve; and a drain pipe is installed at one of the outlets of the electric three-way ball valve.

[0021] An electric rotating disc is located below the electric three-way ball valve, a plurality of rain collecting containers are installed on the electric rotating disc, and the other outlet of the electric three-way ball valve is communicated with one of the rain collecting containers on the electric rotating disc; a control module is electrically connected with the tipping bucket rain gauge, the electric classification five-way ball valve, the electric collecting five-way ball valve, the electric three-way ball valve, the flow meter, and the plurality of liquid level meters, and the control module controls the electric classification five-way ball valve, the electric collecting five-way ball valve, or the electric three-way ball valve according to the electric signals of the tipping bucket rain gauge, the flow meter, or the plurality of liquid level meters based on its own logic.

[0022] Further, the rain gauge module, the classification storage module, and the classification collecting module are detachably connected through bolts and connecting plates.

[0023] The design of the bolts and the connecting plates enables the rain gauge module, the classification storage module, and the classification collecting module to be detached and separated from each other, so that the overall weight is divided into multiple parts during transportation, facilitating transportation.

[0024] Further, the control module is integrated in a module shell, and the module shell is installed on the outside of the third shell through bolts.

[0025] The control module is in the module shell, is based on the heat dissipation consideration, is outside the third shell, is easier to exchange heat with the outside world, and the device is mainly used in the outdoor rainy day, so the module shell can also prevent rain.

[0026] Further, the control module is powered by external alternating current or battery.

[0027] There are two power supply modes: when close to the alternating current socket, the external alternating current is used for power supply; in the position without direct connection with alternating current, the battery is used for power supply, and the full battery is replaced regularly.

[0028] Further, the rain collecting funnel and the receiving funnel are funnel-shaped, and the upper end is large and the lower end is small.

[0029] The funnel-shaped structure can not only receive and collect rainwater to the bottom end, but also facilitate processing of the rain collecting funnel and the receiving funnel.

[0030] By adopting the technical scheme, the device has the beneficial effects that:

[0031] The device can send an electric signal to the control module by using the tipping bucket rain gauge, the control module calculates the rain intensity in the time difference according to the time difference between the two electric signals and the fixed rain amount of each rotation of the tipping bucket rain gauge, the control module controls the rotation of the corresponding electric classification five-way ball valve core according to the rain intensity result, so that the rainwater flows into the corresponding rain collecting container, and the rainwater is discharged into the drain pipe or the sampling container according to the electric signal triggered by the corresponding liquid level meter, so that the rainfall is collected according to the rain intensity. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the device as a whole.

[0033] 1, first shell; 2, rain collecting funnel; 3, tipping bucket rain gauge; 4, second shell; 5, rain receiver; 6, receiving funnel; 7, electric classification five-way ball valve; 8, third shell; 9, electric collection five-way ball valve; 10, electric three-way ball valve; 11, electric rotating disc; 12, control module; 13, rain collecting container; 14, drain pipe. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0035] As shown in FIG. 1, the modular rainwater collection device comprises a rain gauge module, a classified storage module, a classified collection module, a control module and a power supply. The rain gauge module, the classified storage module and the classified collection module are stacked in order from top to bottom and connected by corresponding bolts and connecting plates.

[0036] The rain gauge module collects a certain amount of rainwater (0.1mm) and sends an electrical signal to the control module. The control module calculates the rain intensity according to the time difference of the electrical signal and the amount of rainwater collected, and then controls the classified storage module according to the calculation result to store rainwater of different rain intensities. Finally, the control module controls the classified collection module according to the preset rules to guide the rainwater of different rain intensities into the corresponding containers, thereby realizing the collection of rainwater according to the rain intensity.

[0037] Specifically, the rain gauge module comprises the following structures:

[0038] The first shell 1 is a straight circular tube with its axis vertically arranged.

[0039] The rainwater collecting funnel 2 is funnel-shaped with a wide top and a narrow bottom, and is fixedly connected in the cavity of the first shell 1; it is used to concentrate the rainwater collected at the top to the bottom end.

[0040] The tipping bucket rain gauge 3, which is a prior art, is located below the rainwater collecting funnel 2, and its bottom plate is fixedly connected to the inner wall of the cavity of the first shell 1. The upper tipping bucket of the tipping bucket rain gauge 3 is below the water outlet of the rainwater collecting funnel 2 and is used to receive the rainwater leaked from the lower end of the rainwater collecting funnel 2. The upper tipping bucket has two bucket chambers, one high and one low. The high bucket chamber receives the rainwater flowing out of the water outlet of the rainwater collecting funnel 2. When the weight of the rainwater reaches the tipping threshold of the upper tipping bucket, the upper tipping bucket becomes unbalanced and rotates, the original high bucket chamber moves to the low position, and the rainwater in the bucket chamber flows out to the rainwater receiver. The original low bucket chamber moves to the high position and continues to receive the rainwater flowing out of the water outlet of the rainwater collecting funnel 2, and the cycle continues.

[0041] Each time the upper tipping bucket rotates, the reed of the reed switch at the top of the upper tipping bucket will be attracted by the magnetic force and will contact and connect the internal circuit to generate an electrical signal. This electrical signal will be transmitted to the control module. The control module calculates the rain intensity of the time period according to the time difference between the two electrical signals and the amount of liquid (0.1mm) flowing out each time the upper tipping bucket rotates. For specific process, please refer to the operation process described below.

[0042] The first connecting plate is fixedly connected to the lower end of the outer side wall of the first shell 1 and is used to connect with the classified storage module.

[0043] The classified storage module comprises the following structures:

[0044] The second shell 4 is the same in shape and size as the first shell 1, and the axes of the two coincide.

[0045] The second connecting plate is fixed to the upper end of the outer side wall of the second shell 4 and is used to be connected with the first connecting plate through bolts and nuts.

[0046] The receiving funnel 6 is funnel-shaped with a wide upper part and a narrow lower part and is fixed to the inner wall of the cavity of the second shell 4. The two rain receivers 5 are located above the receiving funnel 6. The rain receiver 5 is a device for receiving and guiding rainwater and is part of the tipping-bucket rain gauge 3. The two rain receivers 5 are used to guide rainwater to the receiving funnel 6, and the receiving funnel 6 concentrates the rainwater at the bottom end thereof.

[0047] The electric classification five-way ball valve 7 is located below the receiving funnel 6, has one inlet and four outlets, and adopts a single-inlet and single-outlet mode (i.e., only one inlet can be connected with one outlet). The inlet is connected with and communicates with the lower end of the receiving funnel 6, and the four outlets respectively communicate with the four rainwater collection warehouses in the cavity of the second shell 4. When the valve core is in a certain open position, the receiving funnel 6 is connected with only one rainwater collection warehouse; when the valve core is closed, the receiving funnel 6 is not connected with any rainwater collection warehouse.

[0048] Because the rainfall intensity classification standard is 0.1-2.5 mm / h (light rain), 2.5-8.0 mm / h (moderate rain), 8.0-15.9 mm / h (heavy rain), and more than 15.9 mm / h (heavy rain), four rainwater collection warehouses are designed to collect rainwater of four kinds of rainfall intensity.

[0049] According to the preset control logic of the control module, the control module controls the motor of the electric classification five-way ball valve 7 to rotate the valve core of the electric classification five-way ball valve 7, so that the inlet of the electric classification five-way ball valve 7 communicates with one of the outlets. Under the action of the self-weight of the rainwater, the rainwater on the receiving funnel 6 is drained into one of the rainwater collection warehouses. If the rainfall intensity changes within a certain period of time (the time period of the two electric signals of the rain gauge module), the control module can dynamically adjust the distribution of the rainwater collection warehouses during the distribution process.

[0050] A liquid level meter is installed in each rainwater collection warehouse, and each liquid level meter can monitor the liquid level in the corresponding rainwater collection warehouse. During subsequent sampling, the liquid level meter sends an electric signal for sampling to the control module according to the liquid level information. Alternatively, during subsequent drainage, the liquid level meter sends an electric signal for drainage to the control module according to the liquid level information.

[0051] The third connecting plate is fixed to the lower end of the outer side wall of the second shell 4 and is used to be connected with the classification and collection module.

[0052] The classification and collection module comprises the following structures:

[0053] The third shell 8 is the same in shape and size as the first shell 1 and the second shell 4, and the axes of the three shells coincide.

[0054] Fourth connecting plate, fixed on the outer side wall of the third shell 8, used for connecting with the third connecting plate through bolts and nuts.

[0055] Electric collection five-way ball valve 9, fixed on the inner wall of the cavity of the third shell 8, including four inlets and one outlet; also using single-in single-out mode. The four inlets of the electric collection five-way ball valve 9 are respectively communicated with the bottom end of each rain collection bin.

[0056] Electric three-way ball valve 10, including one inlet and two outlets; also using single-in single-out mode. The inlet of the electric three-way ball valve 10 is fixedly connected and communicated with the outlet of the electric collection five-way ball valve 9. One of the outlets of the electric three-way ball valve 10 is fixedly connected with a drain pipe 14, the end of the drain pipe 14 away from the electric three-way ball valve 10 extends out of the third shell 8, and the rainwater flowing into the drain pipe 14 can be drained out of the device. A flow meter is installed at the inlet of the electric three-way ball valve 10, and the flow meter is electrically connected with the control module 12. The flow meter monitors the real-time flow rate flowing into the electric three-way valve (also the real-time flow rate flowing out of the electric three-way valve), and the control module 12 calculates the volume of the liquid flowing through the electric three-way valve by integrating the flow rate. The formula is: ; in the formula, Q (t) represents the instantaneous flow rate;

[0057] Electric turntable 11, located below the other outlet of the electric three-way ball valve 10. A plurality of sampling containers are detachably installed on the platform of the electric turntable 11. The control module 12 controls the motor of the electric turntable 11 according to the preset logic, so that a sampling container is located below the outlet of the electric three-way ball valve 10 other than the drain pipe 14, so as to realize the collection of rainwater with different rain intensities by different sampling containers. If 12 sampling containers are uniformly arranged, the control module 12 can switch the sampling containers by controlling the motor to rotate 30 degrees each time.

[0058] The control module 12 is integrated in a module shell, which is a single-chip unit and is installed on the outer side of the third shell 8 by bolts. It is electrically connected with the rain gauge module, the electric classification five-way ball valve 7, the electric collection five-way ball valve 9, the electric three-way ball valve 10, the four liquid level meters, the electric turntable 11 and the flow meter, and controls these components according to the preset logic. The power supply for the control module 12 can be an external AC power supply or a battery, and the power supply mode can be selected according to the actual situation.

[0059] The sampling process of the device is as follows:

[0060] For the convenience of description, the four rain collection bins are respectively referred to as "light rain collection bin", "moderate rain collection bin", "heavy rain collection bin" and "heavy rain collection bin".

[0061] Before the start of rainfall, the electric classification five-way ball valve 7, the electric collection five-way ball valve 9 and the electric three-way valve are in the closed state.

[0062] After the start of a certain rainfall, as the rainwater falls into the rainwater collecting funnel 2 and then naturally falls into the upper bucket of the tipping bucket rain gauge 3, when the weight of the rainwater reaches the upper bucket tipping threshold, the upper bucket makes the first rotation, and the rainwater received by the upper bucket is poured into the rainwater receiver, and then guided to finally flow into the receiving funnel 6. As the rainfall continues, when the weight of the rainwater reaches the upper bucket tipping threshold again, the upper bucket will make the second rotation. After each rotation of the upper bucket, the tipping bucket rain gauge 3 will generate an electrical signal and send it to the control module 12. When the control module 12 receives the electrical signal for the first time, the control module 12 identifies the rainfall. Assuming that the time point of the first rotation of the upper bucket is t1, and the time point of the second rotation is t2, and because the rainfall carried by the tipping bucket each time is a fixed value (0.1mm), based on this, the rainfall intensity in the period t1-t2 can be calculated, the formula is: Qt1-t2=0.1mm / (t2-t1);

[0063] Based on the rainfall intensity in the period t1-t2, combined with the rainwater standard (0.1-2.5mm / h (light rain), 2.5-8.0mm / h (moderate rain), 8.0-15.9mm / h (heavy rain), and 15.9mm / h or more (heavy rain)), the control module 12 can identify the type of rain in the period t1-t2. For example, assuming that the calculated rainfall intensity Qt1-t2 in the period t1-t2 is 1.3mm / h, which belongs to the light rain category: 0.1-2.5mm / h; based on this, the control module 12 identifies it as "light rain" at time t2, and the control module 12 controls the electric classification five-way ball valve 7 to open, and the electric collection five-way ball valve 9 and the electric three-way valve remain closed. The internal valve core of the electric classification five-way ball valve 7 is controlled to rotate by the control module 12, at this time, the outlet of the electric classification five-way ball valve 7 is turned to the light rain rainwater collection bin and remains there. The rainwater (accumulated from the start of rainfall to time t2) that was accumulated in the rainwater collecting funnel 2 due to the closure of the electric classification five-way ball valve 7 flows to the "light rain rainwater collection bin" through the electric classification five-way ball valve 7. From the basic principle of rotation of the upper bucket of the tipping bucket rain gauge, the greater the rainfall, the higher the frequency of rotation of the upper bucket, which can effectively deal with sudden changes in rainfall intensity and reduce hysteresis.

[0064] In the subsequent rainfall process, the tipping bucket rain gauge 3 continues to work, and when the n th (n≥3) rotation occurs, the control module 12 calculates the rainfall intensity Qt(n-1)-tn=0.1mm / (tn-t(n-1)) in the period from tn-1 to tn according to the same principle, and controls the valve core of the electric classification five-way ball valve 7 to introduce the corresponding period of rainfall into the corresponding rainwater collection bin. For example, if the rainfall intensity at t2-t3 is 3mm / h, it belongs to the category of moderate rain: 2.5-8.0mm / h; based on this, the control module 12 identifies “moderate rain” at t3, and controls the electric classification five-way ball valve 7 to continue to open at t3, and turns its outlet to the moderate rain collection bin and keeps it there; this means that from the start of the rainfall to t3, the rainwater is stored in the light rain collection bin, and the rainwater from t3 to t4 in the future will be stored in the moderate rain collection bin. Similarly, as the rainfall continues, the n th rotation of the tipping bucket continues to judge and control the action of the electric classification five-way ball valve 7 in the above manner, and the rainwater in the corresponding adjacent two time points ((n-1) and n) is stored in the corresponding rainwater collection bin.

[0065] From the above, although the control module controls the action of the electric classification five-way ball valve 7, there is a certain lag due to the rotation of the tipping bucket, but the lag error is small and is the error allowed by the device for collecting rainwater.

[0066] As the rainfall continues to operate, rainwater is continuously introduced into each rainwater collection bin in the above manner, and the rainwater in each rainwater collection bin may increase, or only part of the rainwater in each rainwater collection bin may increase. The liquid level meter installed in each rainwater collection bin detects the liquid level in each rainwater collection bin in real time. In order to facilitate description, the liquid level meter in each corresponding “rainwater collection bin” is respectively referred to as “light rain bin liquid level meter”, “moderate rain bin liquid level meter”, “heavy rain bin liquid level meter” and “heavy rain bin liquid level meter”.

[0067] The above liquid level meters are all electrically connected to the control module 12, so they can all transmit the monitored liquid level data to the control module 12, and the control module 12 controls the action of the corresponding electric collection five-way ball valve 9 and electric three-way valve according to the signals of the corresponding “liquid level meter”. Each liquid level meter is provided with a “low threshold” and a “high threshold”, and when the liquid level of the rainwater in the corresponding rainwater collection bin reaches the high threshold, it indicates that the sampling container needs to be supplied with water at this time, so that the sampling container can sample the rainwater in the corresponding rainwater collection bin. When the liquid level of the rainwater in the corresponding rainwater collection bin reaches the “low threshold”, it indicates that the rainwater in the rainwater collection bin has flowed out.

[0068] For example: assuming that the rainfall in the middle period of time, the rain intensity remains "moderate rain", the control module through the electric five-way valve makes the receiving funnel 6 always connected with the moderate rain rainwater collection tank, resulting in the continuous rise of the liquid level in the moderate rain rainwater collection tank, and finally the moderate rain rainwater collection tank liquid level meter detects that the liquid level in the moderate rain rainwater collection tank reaches the high threshold value; the moderate rain rainwater collection tank liquid level meter generates an electrical signal and transmits it to the control module 12. After receiving the signal, the control module 12 simultaneously opens the electric collection five-way ball valve 9 and the electric three-way valve, controls the rotation of the valve core of the two, makes the moderate rain rainwater collection tank communicate with the electric three-way valve, and makes the electric three-way valve communicate with the sampling container corresponding to the'moderate rain rainwater collection tank' on the electric turntable, and simultaneously controls the electric turntable to rotate to the corresponding position. Based on this, the moderate rain rainwater in the moderate rain rainwater collection tank flows to one of the sampling containers through the electric collection five-way ball valve 9 and the electric three-way valve. The flow meter installed at the inlet end of the electric three-way valve monitors the real-time flow and transmits the monitored flow to the control module 12, and the control module 12 calculates the outflow volume by integral method. Since the volume of each sampling container is 20ml, when the control module 12 calculates that the outflow volume reaches 20ml, the control module 12 controls the rotation of the electric collection five-way ball valve 9 and the electric three-way valve, and the electric collection five-way ball valve 9 and the electric three-way valve are closed again, thereby completing the collection of rainwater in one of the sampling containers. The amount of rain in the moderate rain rainwater collection tank decreases, and the liquid level decreases. The rainfall continues, and when the rain in the moderate rain rainwater collection tank reaches the high threshold value of the moderate rain rainwater collection tank liquid level meter again, the sampling will be triggered again, and the process is as described above.

[0069] Through the precise monitoring of the liquid level meter and the cooperative operation of the control module, efficient and accurate sampling of rainwater of different rain intensities is realized.

[0070] Drainage process of the device:

[0071] There are a total of 12 sampling containers installed on the electric turntable 11, and each sampling container has corresponding marks on the surface of the turntable, indicating the type of stored rainwater. For example: the sampling containers installed at the positions of 3 red marks are used to collect "light rain", the sampling containers installed at the positions of 3 yellow marks are used to collect "moderate rain", the sampling containers installed at the positions of 3 green marks are used to collect "heavy rain", and the sampling containers installed at the positions of 3 black marks are used to collect "heavy rain". The control module 12 also sets the control logic for controlling the angle of the electric turntable, so that the rainwater flowing out of the corresponding "rainwater collection tank" will be stored in the sampling container with the corresponding mark.

[0072] As can be seen from the above, each type of rainwater can be stored in at most 3 sampling containers. If a "rainwater collection tank" triggers more than 3 times of sampling during a rainfall, the rainwater of the fourth and subsequent sampling signals will be drained to the drain pipe 14.

[0073] For example: in the above rainfall process, the fourth time the middle rain rainwater collection tank reaches the high threshold of the liquid level meter, but the previous three times the high threshold is reached, the corresponding three yellow mark positions installed three sampling containers have been full of "moderate rain". So this time the rainwater will be drained to the drain pipe 14; the specific logic is: the control module 12 controls the valve core rotation of the electric collection five-way ball valve 9, so that the middle rain rainwater collection tank is connected with the electric three-way valve, and at the same time, the control module 12 controls the valve core rotation of the electric three-way valve, so that the electric three-way valve is connected with the drain pipe 14, and the "middle rain rainwater collection tank" rainwater flows out of the drain pipe 14 through the electric collection five-way ball valve 9 and the electric three-way valve; similarly, the control module 12 calculates the volume of the liquid flowing out according to the instantaneous flow monitored by the flow meter, and when the control module 12 calculates the amount to 20ml, the electric collection five-way ball valve 9 and the electric three-way valve are controlled to be closed again. In this way, the rainwater greater than 3 times triggers is drained through the drain pipe.

[0074] According to this logic, the orderly drainage of excess rainwater under the condition that the sampling container is full is effectively guaranteed.

[0075] The device "empties" the rainwater collection tank after the rain stops:

[0076] The moment of the upper bucket of the tipping bucket rain gauge 3 turning over this time is tm, and after tm, a set threshold time tx (such as 20 minutes) elapses, and within this tx minutes, the upper bucket of the tipping bucket rain gauge 3 does not continue to turn over, then the control module 12 recognizes that the rain stops at the time of (tm+tx), and only triggers the emptying process when the rain stops, the sound reminding module carried by the control module will sound, reminding the experimenter to check the collection condition of the "sampling container" in time, and replacing the sampling container in time. At this time, the control module 12 first controls the electric classification five-way ball valve 7 to be closed.

[0077] The control module 12 controls the electric collection five-way ball valve 9 and the electric three-way valve to act, and controls the rainwater in the "light rain rainwater collection tank", "middle rain rainwater collection tank", "heavy rain rainwater collection tank" and "heavy rain rainwater collection tank" to be drained in turn.

[0078] For example, taking the drainage of the moderate rain rainwater collection tank as an example, the control module 12 controls the valve core of the electric collection five-way ball valve 9 to rotate, so that the moderate rain rainwater collection tank is communicated with the electric three-way valve, and the valve core of the electric three-way valve is controlled to rotate, so that the electric collection five-way ball valve 9 is communicated with the drain pipe 14. At this time, the rainwater in the moderate rain rainwater collection tank flows to the drain pipe 14 through the electric collection five-way ball valve 9 and the electric three-way valve, and the liquid level in the moderate rain rainwater collection tank is thus lowered. When the moderate rain rainwater collection tank reaches the "low threshold", it indicates that the rainwater in the "moderate rain rainwater collection tank" is drained. At this time, the control module 12 keeps the electric three-way valve inaction, and controls the valve core of the electric collection five-way ball valve 9 to rotate, so that the electric collection five-way ball valve 9 is communicated with the heavy rain rainwater collection tank. At this time, the heavy rain rainwater collection tank is communicated with the drain pipe, and the above process is the same, until the rainwater in the "heavy rain rainwater collection tank" is drained. After the rainwater in the heavy rain rainwater collection tank is drained, the control module 12 controls the electric collection five-way ball valve 9 and the electric three-way valve to be closed. At this time, the collection is completed in a single rainfall process. After each rainfall, the experimental personnel take down the sampling container filled with samples on the electric rotating disc 11, and the experimental personnel paste the corresponding label on the sampling container according to the corresponding color mark, such as pasting the moderate rain label on the yellow mark sampling container, and reloading the empty sampling container in the original position.

[0079] According to the above process, the emptying of the rainwater collection tank after a single rainfall is completed, and the next rainwater collection is prepared

[0080] According to the above ideal embodiment of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A modular rainwater harvesting device, characterized in that, The rain gauge module, the classified storage module, the classified collection module and the control module are sequentially stacked from top to bottom, and the control module is connected outside the classified collection module. The rain gauge module comprises: A first shell; A rain collecting funnel fixed in the cavity of the first shell for collecting and concentrating rainwater at the bottom thereof; A tipping bucket rain gauge below the rain collecting funnel for receiving the rainwater flowing out of the rain collecting funnel, which can rotate and generate an electric signal when the rainfall reaches a tipping threshold; The classified storage module comprises: A second shell; A receiving funnel fixed in the cavity of the second shell for receiving the rainwater flowing out of the tipping bucket rain gauge; An electric classified five-way ball valve installed at the lower end of the receiving funnel, which has one inlet and four outlets, wherein the inlet is connected and communicated with the lower end of the receiving funnel; Four rain collecting bins, each of which is fixed in the cavity of the second shell and located below the electric classified five-way ball valve, and the four outlets of the electric classified five-way ball valve are communicated with the four rain collecting bins respectively; The classified collection module comprises: A third shell; An electric collection five-way ball valve installed at the lower end of the four rain collecting bins, which has four inlets and one outlet, and the four inlets are connected and communicated with the bottom ends of the four rain collecting bins respectively; An electric three-way ball valve installed at the lower end of the electric collection five-way ball valve, which has one inlet and two outlets, and the inlet is communicated with the outlet of the electric collection five-way ball valve; a flowmeter is installed at the inlet of the electric three-way ball valve; one of the outlets of the electric three-way ball valve is provided with a drain pipe; An electric turntable below the electric three-way ball valve, a plurality of rain collecting containers are installed on the electric turntable, and the other outlet of the electric three-way ball valve is communicated with one of the rain collecting containers on the electric turntable; the control module is electrically connected with the tipping bucket rain gauge, the electric classified five-way ball valve, the electric collection five-way ball valve, the electric three-way ball valve, the flowmeter and the plurality of liquid level meters, and the control module controls the electric classified five-way ball valve, the electric collection five-way ball valve or the electric three-way ball valve according to the electric signals of the tipping bucket rain gauge, the flowmeter or the plurality of liquid level meters based on its own logic.

2. The modular rainwater harvesting device of claim 1, wherein, The rain gauge module, the classified storage module and the classified collection module are detachably connected by bolts and connecting plates.

3. The modular rainwater harvesting device of claim 1, wherein, The control module is integrated in the module shell, and the module shell is installed outside the third shell by bolts.

4. The modular rainwater harvesting device of claim 3, wherein, The control module is powered by external alternating current or battery.

5. The modular rainwater harvesting device of claim 3, wherein, The rain collecting funnel and the receiving funnel are funnel-shaped, and the upper end is larger than the lower end.

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