Anti-blocking valve for rainwater collecting equipment and intelligent rainwater collecting equipment thereof

Abstract

The invention provides an anti-blocking valve for rainwater collecting equipment and intelligent rainwater collecting equipment thereof, which are used for solving the problems that the impurity intercepting and cleaning capacity is weak and the valve is inconvenient to clean, the anti-blocking valve comprises a three-way valve, a graphite conductive rod and a funnel-type rain gauge, the three-way valve is controlled by a motor, and the three-way valve comprises a drain outlet, a water inlet and a collecting port. The collecting port is connected with a water tank, the water inlet is communicated with a spiral pipe, the central axis of the spiral pipe is horizontally arranged, the bottom end of the spiral pipe is communicated with a pass-stop pipe, the side wall of the pass-stop pipe is communicated with a blow-off pipe, the end, away from the spiral pipe, of the blow-off pipe is communicated with the blow-off port, and a sealing plug slides in the pass-stop pipe and can seal the blow-off pipe; a connecting rod penetrating through the through-stop pipe is arranged at the bottom end of the sealing plug and connected with a rotating shaft of the motor through a rocker mechanism. Through horizontal arrangement of the spiral pipe, sediment can be settled through centrifugal force, suspended solids entering the water tank are reduced, the subsequent filter element load is relieved, and the maintenance period is prolonged.

Description

Technical Field

[0001] This invention relates to the field of rainwater harvesting equipment, and in particular to an anti-clogging valve for rainwater harvesting equipment and its intelligent rainwater harvesting equipment. Background Technology

[0002] In daily life, water scarcity and water environment problems are becoming increasingly prominent, making rainwater harvesting and utilization a focus of widespread attention. Currently, rainwater harvesting technology covers rooftop collection, pipe network transportation, storage, purification, and utilization, forming a relatively complete system. However, rainwater harvesting valves and related equipment still have many problems, severely restricting the efficiency, water quality, reliability, and economy of rainwater harvesting systems.

[0003] Traditional rainwater harvesting systems typically use fixed three-way valves, which cannot dynamically switch flow channels, causing initially contaminated rainwater to directly enter the storage device. Meanwhile, drain outlets are mostly normally open or manually controlled, making it difficult to effectively intercept upstream rainwater containing many impurities, and easily leading to water accumulation in pipes after the rain stops, breeding mosquitoes. Furthermore, the systems have low automation levels, insufficient water quality assurance, and high maintenance costs. Summary of the Invention

[0004] This invention proposes an anti-clogging valve for rainwater collection equipment and its intelligent rainwater collection equipment, which solves the problems of weak impurity interception and cleaning capabilities and inconvenient valve cleaning in the prior art.

[0005] The technical solution of this invention is implemented as follows: A clog-proof valve for rainwater harvesting equipment includes a three-way valve, a graphite conductive rod, and a funnel-shaped rain gauge. The three-way valve is controlled by a motor and includes a drain outlet, a water inlet, and a collection outlet. The collection outlet is connected to a water tank, and the water inlet is connected to a spiral tube with its central axis horizontally positioned. A stop-flow tube is connected to the bottom end of the spiral tube, and a drain pipe is connected to the side wall of the stop-flow tube. The end of the drain pipe away from the spiral tube is connected to the drain outlet. A sealing plug slides inside the stop-flow tube, sealing the drain pipe. A connecting rod penetrating the stop-flow tube is located at the bottom end of the sealing plug, and the connecting rod is connected to the rotating shaft of the motor via a rocker mechanism. The rocker mechanism includes a first rocker and a second rocker. A limiting ring is provided on the side wall of the three-way valve, and the second rocker slides up and down along the limiting ring.

[0006] Furthermore, the upper end of the spiral tube is provided with a cleaning port, and a sealing cap is screwed onto the cleaning port. Through the top cleaning port and the sealing cap, the inner wall biofilm and fibers can be spirally scrubbed by periodically opening the tube.

[0007] Furthermore, the spiral tube contains multiple cleaning balls smaller than its inner diameter. These cleaning balls are connected to the inner wall of the sealing cap via connecting lines, and their outer surfaces are provided with spiral ribs. By using these cleaning balls, real-time physical cleaning of the inner wall can be achieved through the impact of water flow and the scraping action of the ribs. The pull-out structure allows maintenance personnel to use external force from the sealing cap to pull the cleaning balls, precisely removing stubborn deposits.

[0008] Furthermore, the cleaning ball can be encapsulated with silver ion slow-release particles, and an elastic anti-collision layer is provided on the outer side of the cleaning ball. Long-lasting antibacterial effect is achieved through the slow release of silver ions, while the elastic anti-collision layer protects the tube wall during flexible scraping.

[0009] Furthermore, the sewage outlet is connected to the sewage pipe via a float box. The float box contains a float, and a transmission rod is located at the top of the float, passing through the float box. A bracket is located at the top of the float box, and a signal rod is hinged to the top of the bracket. One end of the signal rod is hinged to the transmission rod. An electric control switch is installed on the float box. When the float rises to a certain height, the signal rod connects to the electric control switch. A solenoid valve and an overflow port are located on one side of the float box. The electric control switch is electrically connected to the motor and the solenoid valve. By driving the float, transmission rod, and signal rod through a liquid level-driven linkage, the electric control switch is precisely triggered, enabling the automatic opening and closing of the sewage discharge motor and solenoid valve. This allows for rapid sewage discharge when the collected sewage reaches a threshold, while also preventing overflow through the overflow port, ensuring safe and stable system operation without manual intervention.

[0010] Furthermore, the spiral tube has a transparent viewing window on its side wall. This viewing window allows for easy monitoring of scale buildup inside the water pipe and the condition of its components.

[0011] An intelligent rainwater harvesting device includes a rainwater collection trough connected to a downpipe. The end of the downpipe furthest from the rainwater collection trough is connected to the inlet of a three-way valve via a spiral tube. A filter screen is hinged inside the rainwater collection trough via a rotating rod. The filter screen can block the downpipe. The rotating rod is connected to the filter screen via a torsion spring. A transmission line is fixed to the filter screen, and the other end of the transmission line is connected to the rotating shaft of a motor via a reciprocating mechanism. The rainwater harvesting device achieves initial automatic filter screen cleaning through a self-cleaning mechanism. Users can check the operating status simply by observing the transparent window from the ground, making the entire roof rainwater harvesting process fully automated.

[0012] Furthermore, the water tank is connected to an air pump, with a first check valve between the air pump and the water tank, and a second check valve between the three-way valve and the water tank. The check valves, in conjunction with the air pump, enable precise pressure control to achieve a constant pressure supply of rainwater. Simultaneously, the slightly positive pressure environment provided by the air pump effectively isolates pollution caused by backflow of external air.

[0013] Furthermore, a collection bin corresponding to the filter screen is attached to the outer side of the rainwater collection trough. By linking the outer-mounted collection bin with the filter screen's flipping mechanism, initial rainwater interception is automatically discharged, reducing the frequency of manual cleaning and the time required for each maintenance cycle.

[0014] Furthermore, the reciprocating mechanism includes a transmission ring sleeved on the transmission shaft. The inner side of the transmission ring has a limiting hole, and the transmission shaft has a limiting groove corresponding to the limiting hole. A limiting rod is installed inside the limiting hole, and the depth of the limiting groove is less than the diameter of the limiting rod. When the filter screen is reset, the limiting hole is above the limiting groove. The filter screen flipping is achieved through ball-groove interlocking, relying entirely on physical principles and unaffected by electromagnetic interference. It maintains high reliability even under harsh weather conditions, while significantly reducing energy consumption and maintenance costs, making it particularly suitable for cleaning operations with frequent start-stop cycles.

[0015] Beneficial effects This invention uses a motor to drive a three-way valve to rotate, connecting the spiral tube to the water tank. Simultaneously, a rocker mechanism converts the rotational motion into linear motion of a sealing plug, closing the drain pipe and switching the flow path to cut off upstream sewage. The horizontal arrangement of the spiral tube utilizes centrifugal force to settle sediment, reducing suspended solids entering the water tank, lessening the load on subsequent filter cartridges, and extending maintenance cycles. After rain stops, the rain gauge detects no increase in rainfall, and the controller reverses the motor, opening the drain outlet to discharge residual water and impurities, achieving immediate drainage after rain stops, preventing water accumulation and mosquito odors. In the rain collection device, before rainfall, a filter screen covers the inlet of the downpipe to intercept initial impurities. After reaching the discharge flow rate, the motor uses a reciprocating mechanism to flip the filter screen, tilting away the intercepted material and self-cleaning. Reset: If the rain gauge fails, the float box electrical control switch can be redundantly triggered to flip, ensuring impurity rejection and filter self-cleaning, achieving reliable equipment operation; the rainwater collection trough filter flipping and spiral tube centrifugal rejection work together to integrate roof primary filtration, pipeline rejection, centrifugal sedimentation and water tank storage into one-button automation, achieving zero-attendance on the roof, stable water quality, doubled lifespan and reduced costs; the water tank is connected to an air pump, which automatically pressurizes after each cycle of rejection to collection. When water is used, high-pressure gas pushes rainwater out at constant pressure, and intermittent pressurization creates a slightly positive pressure environment to prevent air backflow and rainwater acidification. In winter antifreeze mode, the air pump pulses to inject high-pressure air to agitate the water and prevent the water tank from freezing and cracking.

[0016] The spiral tube of this invention is not only used for sedimentation, but its horizontally placed spiral structure and the sealing plug at the bottom of the go-stop pipe also form a temporary storage and centralized discharge chamber for sediment. In the sewage discharge mode, when the sewage discharge pipe is opened, the high-speed water flow can most effectively entrain and discharge the sediment at the bottom of the spiral tube and in the go-stop pipe. This structural layout and the specific combination of linkage timing achieve a higher efficiency in anti-clogging sewage discharge than a simple filter + backwash. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention after installation; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a partial three-dimensional structural diagram of the present invention; Figure 4 This is a cross-sectional three-dimensional structural diagram of the present invention; Figure 5 This is a schematic diagram of the partial three-dimensional structure of the cleaning ball. Figure 6 A schematic diagram of the three-dimensional structure of a filter screen under normal operating conditions; Figure 7 A three-dimensional structural diagram of a self-cleaning filter. Figure 8 for Figure 2 Exploded view of a section at point A in the middle; Figure 9 A schematic diagram showing the relative positions of the limit bar in the limit hole and limit groove under different working conditions; Figure 10 for Figure 5 A magnified view of a section at point B.

[0019] The components are as follows: 1. Three-way valve, 2. Motor, 3. Drain outlet, 4. Inlet, 5. Collection outlet, 6. Water tank, 7. Spiral tube, 8. Check and stop tube, 9. Drain pipe, 10. Sealing plug, 12. Connecting rod, 13. Rocker mechanism, 14. Cleaning port, 15. Sealing cover, 16. Cleaning ball, 17. Spiral rib, 18. Float, 19. Transmission rod, 20. Signal rod, 21. Electric control switch, 22. Overflow outlet, 23. Solenoid valve, 24. Viewing window, 25. Downpipe, 26. Rotating rod, 27. Filter screen, 28. Torsion spring, 29. Transmission line, 30. Reciprocating mechanism, 31. Air pump, 32. First check valve, 33. Second check valve, 34. Collection chamber, 35. Transmission ring, 36. Limiting hole, 37. Limiting groove, 38. Limiting bar. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this embodiment, it should be understood that the terms "center," "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0022] like Figure 1-5 As shown, this embodiment of the invention provides a valve for a rainwater harvesting device, including a three-way valve 1, a graphite conductive rod, and a funnel-shaped rain gauge. The three-way valve 1 is controlled by a motor 2. The three-way valve 1 includes a drain outlet 3, a water inlet 4, and a collection outlet 5. The collection outlet 5 is connected to a water tank 6. The water inlet 4 is connected to a spiral tube 7. The central axis of the spiral tube 7 is horizontally arranged. The bottom end of the spiral tube 7 is connected to a stop-flow tube 8. The side wall of the stop-flow tube 8 is connected to a drain pipe 9. The end of the drain pipe 9 away from the spiral tube 7 is connected to the drain outlet 3. A sealing plug 10 slides inside the stop-flow tube 8. The sealing plug 10 can close the drain pipe 9. The bottom end of the sealing plug 10 is provided with a connecting rod 12 that penetrates the stop-flow tube 8. The connecting rod 12 is connected to the rotating shaft of the motor 2 through a rocker mechanism 13. The rocker mechanism 13 includes a first rocker and a second rocker. A limiting ring is provided on the side wall of the three-way valve 1. The second rocker slides up and down along the limiting ring. The motor 2 can drive the first rocker arm to rotate through belt drive, chain drive or gear drive, etc. The control scheme of the rocker arm mechanism 13 and the motor 2 are both existing technologies.

[0023] Under normal conditions, the three-way valve 1 connects the spiral pipe 7 to the drain outlet 3. When rainfall begins, rainwater first flows out along the rainwater collection pipe, spiral pipe 7, three-way valve 1, and drain outlet 3. When the accumulated liquid level of the funnel-type rain gauge reaches a preset threshold, the motor 2 is started. The rotating shaft of the motor 2 drives the three-way valve 1 to rotate, connecting the spiral pipe 7 to the water tank 6. At this time, the three-way valve 1 is in the working state. During the process of the motor 2 driving the three-way valve 1 to change to the working state, the motor 2 converts the rotational motion of the motor 2 into the linear motion of the sealing plug 10 through the rocker mechanism 13. The movement of the spiral pipe 7 causes the sealing plug 10 to rise rapidly via the connecting rod 12, thereby closing the drain pipe 9. The internal flow channel of the three-way valve 1 switches instantaneously, cutting off the sewage that was originally flowing to the drain outlet 3 and redirecting it to the collection port 5. Because the central axis of the spiral pipe 7 is horizontally arranged, the denser mud and sand particles are thrown to the outer wall under the centrifugal force of the spiral pipe and fall into the stop-flow pipe 8 along the tangential direction of the spiral pipe 7 under the action of gravity, forming sedimentation. This reduces the suspended matter entering the collection port 5, significantly reducing the load on the subsequent filter element and extending the maintenance cycle. When the funnel-shaped rain gauge detects that the rainfall intensity approaches 0 and remains unchanged for 5 minutes, the controller reverses the drive of the motor 2, the sealing plug 10 descends again, and the drain outlet 3 reopens. With the drain outlet 3 reopened, the residual water and settled impurities in the pipe are discharged sequentially along the stop-flow pipe 8, the drain pipe 9, and the drain outlet 3 under the action of gravity, achieving the hygienic effect of emptying the pipe as soon as the rain stops, preventing water accumulation, mosquitoes, and odors.

[0024] like Figure 2-5 As shown, the upper end of the spiral tube 7 is provided with a cleaning port 14, and a sealing cap 15 is screwed onto the cleaning port 14. When the valve has accumulated a set cycle, the inner wall of the spiral tube 7 can be directly observed by opening the sealing cap 15. A flexible nylon brush rod can also be inserted along the cleaning port 14, and water can be injected while rotating and pushing forward. The spiral bristles at the head of the brush rod are perfectly matched with the pitch of the tube wall. With one round trip, the attached biofilm and plastic fibers can be completely peeled off. The peeled impurities are instantly flushed into the stop-flow pipe 8 with the water flow, and then discharged sequentially through the drain pipe 9 and the drain port 3. At the same time, the cleaning port 14 is located at the geometric highest point of the spiral tube 7. In the case of winter when it cannot be used, the sealing cap 15 can be opened to avoid the risk of the tube freezing and cracking due to residual water in winter. The outer side of the sealing cap 15 can be provided with a hexagonal edge for easy operation with a regular wrench, and a lead seal can also be installed in public places to prevent unauthorized personnel from opening it at will.

[0025] like Figure 5 , 10As shown, the spiral tube 7 contains multiple cleaning balls 16 smaller than its inner diameter. Each cleaning ball 16 is connected to the inner wall of the sealing cap 15 via a connecting line. The outer surface of each cleaning ball 16 has spiral ribs 17. During rainwater discharge, the rainwater continuously washes over the cleaning balls 16, which in turn continuously collide with the inner wall of the spiral tube 7, thus cleaning the inner wall of the pipe. Simultaneously, during maintenance, by removing the sealing cap 15, the cleaning balls 16 can be pulled along the connecting line, causing them to collide with the inner wall of the spiral tube 7. During this collision, the spiral ribs 17 on the cleaning balls act like miniature scrapers, scraping away unconsolidated biofilm, grease, and plastic bag debris, reducing sediment buildup within the spiral tube 7 and preventing a decrease in collection volume due to flow rate reduction.

[0026] The cleaning ball 16 encapsulates slow-release silver ion particles, and its outer surface is equipped with an elastic anti-collision layer. The slow-release silver ion particles encapsulated inside the cleaning ball 16 continuously release trace amounts of antibacterial components into the surrounding water, effectively inhibiting algae growth and biofilm formation, thus keeping the inner wall of the spiral tube 7 clean. The outer elastic anti-collision layer buffers the impact force of collisions with the tube wall during water flow, protecting the inner surface of the pipe from mechanical damage and ensuring a long-term, stable scraping and cleaning effect. As the water flow propels the cleaning ball 16 along a spiral trajectory, the spiral ribs 17 on its surface, combined with the elastic material, achieve flexible abrasion of the tube wall, gradually peeling off attached mud, organic matter, and other impurities and carrying them into the main water flow.

[0027] like Figure 2-4As shown, the sewage outlet 3 is connected to the sewage pipe 9 through a float 18 box. The float 18 box contains a float 18, and the top of the float 18 is equipped with a transmission rod 19 that passes through the float 18 box. The top of the float 18 box is equipped with a bracket, and the top of the bracket is hinged with a signal rod 20. One end of the signal rod 20 is hinged to the transmission rod 19. The float 18 box is equipped with an electric control switch 21. When the float 18 rises to a certain height, the signal rod 20 is connected to the electric control switch 21. A solenoid valve 23 and an overflow port 22 are provided on one side of the float 18 box. The electric control switch 21 is electrically connected to the motor 2 and the solenoid valve 23. Once the funnel-shaped rain gauge is completely blocked by leaves and loses its pulse signal, rainwater will enter the float 18 tank through the spiral tube 7 and the three-way valve 1. When the liquid level in the tank reaches the preset height, the float 18 rises synchronously. The transmission rod 19 transmits the vertical displacement to the signal rod 20 hinged on the bracket. The signal rod 20 presses down the electric control switch 21 like a seesaw. After the electric control switch 21 is triggered, it controls the motor 2 to complete all actions of pulling the rocker, closing the drain outlet 3, and switching to the collection outlet 5, ensuring that the relatively clean rainwater is collected into the water tank 6. On the other hand, the solenoid valve 23 is opened instantly to drain the water in the water tank 6, preventing the float 18 from getting stuck due to sediment buildup. In the event of a severe rainstorm, the water in the float 18 tank will be discharged through the overflow outlet 22, and the water level in the tank will be clamped below a safe height to prevent sewage from flowing back into the collection pipe.

[0028] like Figure 2 , 3 As shown, the spiral tube 7 has a transparent viewing window 24 on its side wall. During routine inspections, the viewing window 24 allows for direct observation of whether mud adheres to the inner wall of the tube, whether the spiral ribs 17 are intact, or whether the cleaning ball 16 is stuck. If a brown biofilm or abnormal floating of the ball is found, the sealing cap 15 can be unscrewed for lifting and cleaning, avoiding blind disassembly of the tube. In low-temperature winter conditions, if maintenance personnel see ice crystal stripes inside the window while the cleaning ball 16 at the bottom of the tube remains stationary, it can be determined that the evacuation is incomplete. The cap should be unscrewed and the cleaning ball 16 should be lifted to break the ice film and prevent the entire tube from freezing and cracking.

[0029] like Figure 1 , 6 As shown in Figure 9, an intelligent rainwater harvesting device includes a rainwater collection trough connected to a downpipe 25. One end of the downpipe 25 away from the rainwater collection trough is connected to the inlet 4 of a three-way valve 1 via a spiral tube 7. A filter screen 27 is hinged inside the rainwater collection trough via a rotating rod 26. The filter screen 27 can block the downpipe 25. The rotating rod 26 is connected to the filter screen 27 via a torsion spring 28. A transmission line 29 is fixed on the filter screen 27. The other end of the transmission line 29 is fixedly connected to the rotating shaft of a motor 2 via a reciprocating mechanism 30.

[0030] Before rainfall, the filter screen 27 tightly covers the inlet of the downpipe 25. Initially, rainwater carrying residual leaves, mud, bird droppings, and plastic bags is intercepted on the screen surface. At the same time, the funnel-shaped rain gauge at the valve end above counts synchronously. If the set discharge flow rate is reached, the motor 2 winds up the transmission line 29 through the reciprocating mechanism 30, and the torsion spring 28 is compressed instantly. At this time, the filter screen 27 quickly flips over, dumping the intercepted material into the drainage ditch outside the tank in one go, preventing the rainwater in the collection tank from overflowing due to the filter screen accumulating too much. Then, the motor 2 releases the winding line, and the torsion spring 28 instantly resets. At the same time, the torsion spring 28 drives the filter screen to reset. After the flip is completed, the drain port 3 of the valve closes and the collection port 5 opens. The relatively clean intermediate water passes through the self-cleaning filter screen, along the downpipe 25, the spiral pipe 7, and centrifugal sedimentation before entering the water tank 6. If the rain gauge malfunctions unexpectedly due to obstruction by leaves, the filter screen 27 flipping signal is redundantly triggered by the float ball box electronic control switch 21. The electronic control switch 21 simultaneously commands the valve to switch and controls the motor 2 to rotate, causing the filter screen 27 to flip. This ensures that impurities in the upstream section are still discarded, and the filter screen continues to self-clean. The entire system does not rely on a single sensor, thus achieving reliable operation of the equipment. Through the combination of the filter screen flipping in the rainwater collection trough and the centrifugal discarding in the spiral tube 7, users only need to observe the transparent window 24 on the ground to confirm at a glance whether the filter screen has flipped in place and whether the spiral tube 7 is clean. The entire system integrates the four major links of roof primary filtration, pipe network discarding, centrifugal sedimentation, and water tank 6 storage into one-button automation, truly achieving multiple beneficial effects such as zero-attendance on the roof, stable water quality, doubled lifespan, and reduced costs.

[0031] like Figure 1 , 2 As shown, the water tank 6 is connected to an air pump 31. A first one-way valve 32 is provided between the air pump 31 and the water tank 6, and a second one-way valve 33 is provided between the three-way valve 1 and the water tank 6. The air pump 31 automatically starts after each wastewater discharge to the collection and circulation controller. Clean air is forced into the upper air chamber of the water tank 6 through the one-way valve, increasing the air pressure inside the tank. When water is needed for subsequent greening irrigation or toilet flushing, the water valve is opened, and the high-pressure gas pushes rainwater out through the water pipe connected to the water tank. The intermittent pressurization of the air pump 31 also creates a slightly positive pressure environment inside the tank, effectively preventing backflow of outside air and avoiding carbon dioxide dissolution that could cause rainwater acidification. In winter antifreeze mode, the air pump 31 switches to pulse operation, injecting high-pressure air every 6 hours. The high-pressure gas generates a violent vortex through the water column, causing the water to churn up and down, thus preventing the risk of the water tank 6 cracking due to ice expansion. The first one-way valve 32 can prevent excessive rainwater from entering the air pump 31, and the second one-way valve 33 can prevent the air pump 31 from discharging the collected rainwater through the three-way valve 1.

[0032] like Figure 1 , 6As shown in Figure 7, a collection chamber 34 corresponding to the filter screen 27 is attached to the outside of the rainwater collection trough. Whenever the motor 2 drives the reciprocating mechanism 30 to pull the transmission line 29 to reverse the filter screen 27, the previously intercepted leaves, plastic bags, and mud clumps are poured into the collection chamber 34 close to the outside of the rainwater collection trough at once. After the rainfall ends, the collection chamber 34 can be emptied, saving a lot of time spent on manual high-altitude cleaning.

[0033] like Figure 2 , 8 As shown in Figure 9, the reciprocating mechanism 30 includes a transmission ring 35 sleeved on the transmission shaft. A limiting hole 36 is provided on the inner side of the transmission ring 35. A limiting groove 37 corresponding to the limiting hole 36 is provided on the transmission shaft. A limiting rod 38 is provided inside the limiting hole 36. The depth of the limiting groove 37 is less than the diameter of the limiting rod 38. When the filter screen 27 is reset, the limiting hole 36 is above the limiting groove 37. The transmission shaft is connected to the rotating shaft of the motor 2 via belt drive, chain drive, or gear drive, etc.

[0034] In normal standby mode, the filter screen 27 is horizontally positioned at the inlet of the drain pipe 25. When cleaning the filter screen 27 is required, the power of the motor 2 is transmitted to the drive shaft via a gear and rack. At this time, under the action of gravity, half of the limiting rod 38 will fall into the limiting groove 37, and the other half will be placed in the limiting hole 36, forming a ball-and-groove engagement structure. Subsequently, the torque of the motor 2 is transmitted to the rotating shaft without loss, thereby realizing the flipping of the filter screen 27. When the motor 2 is continuously rotating to adjust the three-way valve 1, the drive shaft drives the limiting hole 36 and the limiting groove 37 to the bottom of the drive shaft. Then, under the influence of gravity, the limiting rod 38 falls into the limiting hole 36, causing the engagement between the limiting hole 36 and the limiting groove 37 to disengage. At this time, the filter screen 27 returns to its original position under the action of the torsion spring 28, while the motor 2 can remain in working condition. The torsion spring 28 stores energy to achieve automatic return of the filter screen 27, eliminating the need for an additional motor 2 or solenoid valve 23 for control, and avoiding the risk of reset failure due to power failure.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clog-proof valve for a rain collection device, comprising a three-way valve (1), a graphite conductive rod, and a funnel-type rain gauge, wherein the three-way valve (1) is controlled by a motor (2), characterized in that: The three-way valve (1) includes a drain port (3), an inlet (4) and a collection port (5). The collection port (5) is connected to a water tank (6). The inlet (4) is connected to a spiral tube (7). The central axis of the spiral tube (7) is horizontally set. The bottom end of the spiral tube (7) is connected to a stop-flow tube (8). The side wall of the stop-flow tube (8) is connected to a drain pipe (9). The end of the drain pipe (9) away from the spiral tube (7) is connected to the drain port (3). A sealing plug (10) slides inside the stop-flow tube (8). The sealing plug (10) can seal the drain pipe (9). The bottom end of the sealing plug (10) is provided with a connecting rod (12) that passes through the stop-flow tube (8). The connecting rod (12) is connected to the rotating shaft of the motor (2) through a rocker mechanism (13).

2. The anti-clogging valve for a rainwater collection device according to claim 1, characterized in that: The upper end of the spiral tube (7) is provided with a cleaning port (14), and a sealing cap (15) is screwed into the cleaning port (14).

3. The anti-clogging valve for a rainwater collection device according to claim 2, characterized in that: The spiral tube (7) is provided with a plurality of cleaning balls (16), and the cleaning balls (16) are all connected to the inner wall of the sealing cap (15) through connecting lines. The outer surface of the cleaning balls (16) is provided with spiral ribs (17).

4. The anti-clogging valve for a rainwater collection device according to claim 3, characterized in that: The cleaning ball (16) can be encapsulated with silver ion slow-release particles, and the outer side of the cleaning ball (16) is provided with an elastic anti-collision layer.

5. The anti-clogging valve for a rainwater collection device according to claim 1, characterized in that: The drain outlet (3) is connected to the drain pipe (9) through the float (18) box. The float (18) box contains a float (18), and the top of the float (18) is provided with a transmission rod (19). The transmission rod (19) passes through the float (18) box. The top of the float (18) box is provided with a bracket, and the top of the bracket is hinged with a signal rod (20). One end of the signal rod (20) is hinged to the transmission rod (19). The float (18) box is provided with an electric control switch (21). When the float (18) rises to a certain height, the signal rod (20) is connected to the electric control switch (21). The float (18) box is provided with a solenoid valve (23) and an overflow port (22) on one side. The electric control switch (21) is electrically connected to the motor (2) and the solenoid valve (23).

6. The anti-clogging valve for a rainwater collection device according to claim 3, characterized in that: The sidewall of the spiral tube (7) is provided with a transparent viewing window (24).

7. A smart rainwater harvesting device, comprising an anti-clogging valve for smart rainwater harvesting devices as described in any one of claims 1 to 6, characterized in that: It includes a rainwater collection trough, which is connected to a downpipe (25). The end of the downpipe (25) away from the rainwater collection trough is connected to the inlet (4) of the three-way valve (1) through a spiral pipe (7). A filter screen (27) is hinged in the rainwater collection trough through a rotating rod (26). The filter screen (27) can block the downpipe (25). The rotating rod (26) is connected to the filter screen (27) through a torsion spring (28). A transmission line (29) is fixed on the filter screen (27). The other end of the transmission line (29) is fixedly connected to the rotating shaft of the motor (2) through a reciprocating mechanism (30).

8. The intelligent rainwater harvesting device according to claim 7, characterized in that: The water tank (6) is connected to an air pump (31), and a first check valve (32) is provided between the air pump (31) and the water tank (6), and a second check valve (33) is provided between the three-way valve (1) and the water tank (6).

9. The intelligent rainwater harvesting device according to claim 7, characterized in that: The outer side of the rainwater collection trough is attached to a collection chamber (34) corresponding to the filter screen (27).

10. The intelligent rainwater harvesting device according to claim 7, characterized in that: The reciprocating mechanism (30) includes a transmission ring (35) sleeved on the transmission shaft. The inner side of the transmission ring (35) is provided with a limiting hole (36). The transmission shaft is provided with a limiting groove (37) corresponding to the limiting hole (36). A limiting rod (38) is provided in the limiting hole (36). The depth of the limiting groove (37) is less than the diameter of the limiting rod (38). When the filter screen (27) is reset, the limiting hole (36) is above the limiting groove (37).

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