A rainwater recycling device

Abstract

The present invention discloses a rainwater recycling device, comprising: a recycling cylinder having a water inlet, a water outlet and a sewage outlet, a cylinder cover installed on the top of the recycling cylinder, and a flow disturbing component arranged inside the recycling cylinder; through the design of the water inlet, the rainwater entering the water inlet cavity forms a vortex, enabling the rainwater to have a unified flow trend, facilitating the regulation of the rainwater, and disturbing the vortex by the longitudinally arranged first flow disturbing block and second flow disturbing block, effectively suppressing the continuous increase of the vortex. This hierarchical flow disturbing mechanism not only improves the adaptability of the device under different water volume conditions, but also ensures that even under heavy rain conditions, the vortex can be maintained stable, preventing problems caused by excessive internal water pressure of the device. At the same time, the steady flow space in the water inlet cavity ensures that the rainwater can stably form a vortex when entering the bottom of the water inlet cavity, avoiding the disturbance in the initial stage, and further improving the performance and stability of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of rainwater recycling, and particularly to a rainwater recycling device, specifically a rainwater recycling device that does not require additional power to operate and can remove impurities in the recycled water. Background Art

[0002] With the acceleration of global climate change and urbanization, the sustainable management of water resources has become increasingly important. Rainwater, as an important fresh water resource, its recycling and utilization are of great significance for alleviating urban water shortages, reducing flood disasters, and improving the urban ecological environment. In the face of increasingly severe water shortages and environmental problems, how to efficiently utilize every drop of water has become a new challenge. In addition to relying on traditional water supply systems, collecting and utilizing rainwater has become a feasible solution. Rainwater in building drainage systems, especially precipitation during the rainy season, if not effectively utilized, will not only cause waste of water resources, but may also lead to problems such as urban waterlogging.

[0003] However, traditional rainwater recycling devices, as described in the new patent M513230 of Taiwan, China, although achieving rainwater collection and preliminary purification to a certain extent, have obvious limitations in dealing with different rainfall amounts. These devices usually divide the internal space of the device into an inlet space and a drainage space by setting partitions, and through the design of the inlet, the rainwater entering the inlet space forms a vortex, thereby increasing the contact opportunity between the water flow and impurities to achieve the purpose of preliminary purification. However, when the rainfall increases, the height of the vortex will rise accordingly. Once it exceeds the height of the turbulence device (such as a turbulence pad or a protrusion) set in the device, it is impossible to effectively suppress the continuous rise of the vortex, resulting in a sharp increase in the water pressure in the inlet space, and even may cause problems such as device damage or flooding.

[0004] Therefore, in order to solve the above problems, a rainwater recycling device is designed that can work stably under different rainfall conditions, effectively suppress the rise of the vortex height, and ensure the smooth collection and purification of rainwater. Summary of the Invention

[0005] The present invention overcomes the deficiencies of the prior art and provides a rainwater recycling device.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a rainwater recycling device, comprising: a recycling cylinder having an inlet, an outlet, and a sewage outlet, a cylinder cover installed on the top of the recycling cylinder, and a turbulence component disposed in the recycling cylinder;

[0007] A partition is provided inside the recycling cylinder, and the partition divides the interior of the recycling cylinder into an inlet chamber and a drainage chamber located below the inlet chamber. The inlet is communicated with the inlet chamber, so that the water flow entering the inlet chamber generates a vortex, and the turbulence component is located in the inlet chamber;

[0008] The spoiler assembly is used to suppress the tendency of the spiral eddy current in the water inlet cavity to rise highly. The spoiler assembly includes: a plurality of first spoiler blocks and a plurality of second spoiler blocks; the plurality of first spoiler blocks are located below the plurality of second spoiler blocks and are evenly distributed on the inner wall of the recovery cylinder, and an installation frame is fixed above the plurality of second spoiler blocks, and the installation frame is installed inside the recovery cylinder;

[0009] The cylinder cover is provided with a plurality of annular grooves nested with each other, and the widths of the plurality of annular grooves gradually become narrower from the outside of the cylinder cover to the center.

[0010] In a preferred embodiment of the present invention, the widths of the plurality of annular grooves from the outside of the cylinder cover to the center are where n≥3, r represents the radius of the cylinder cover, and i represents the number of annular grooves.

[0011] In a preferred embodiment of the present invention, the water inlet is arranged on one side of the water inlet cavity, and the opening direction of the water inlet forms an acute angle with the parallel direction of the recovery cylinder. The water outlet and the sewage outlet are located below the drainage cavity and are communicated with the drainage cavity.

[0012] In a preferred embodiment of the present invention, the positions where the first spoiler block and the second spoiler block are located respectively form a first spoiler space and a second spoiler space.

[0013] In a preferred embodiment of the present invention, a steady flow space without spoiler is formed between the first spoiler block and the bottom of the water inlet cavity.

[0014] In a preferred embodiment of the present invention, the installation frame includes: a plurality of annular sheets nested with each other, and a fixing block for fixing the plurality of annular sheets; the plurality of second spoiler blocks are evenly distributed at the midline position of the annular sheets and are fixed to the annular sheets by bolts, and the number of the second spoiler blocks distributed on the plurality of nested annular sheets is the same, so that the density of the second spoiler blocks from the outside to the inside of the plurality of annular sheets shows an increasing trend.

[0015] In a preferred embodiment of the present invention, the second spoiler block is hollow, and a plurality of spoiler holes are opened on the second spoiler block.

[0016] In a preferred embodiment of the present invention, the water outlet is located on the side of the drainage cavity, and the sewage outlet is located at the circular position at the bottom of the drainage cavity;

[0017] A separation pipe and a sewage pipe that are communicated with each other are arranged in the drainage cavity. A circular groove is opened at the center position of the partition plate. The separation pipe is communicated with the drainage cavity through the circular groove, and the sewage pipe is communicated with the sewage outlet;

[0018] A plurality of leakage grooves are opened on the separation pipe, so that the water in the separation pipe is separated into the drainage cavity through the leakage grooves.

[0019] In a preferred embodiment of the present invention, the height of the sewage pipe is higher than the width of the water outlet at the horizontal position, so that the water in the drainage cavity is discharged through the water outlet.

[0020] The present invention solves the defects existing in the background technology, and the present invention has the following beneficial effects:

[0021] (1) The present invention provides a rainwater recycling device. Through the design of the water inlet, the rainwater entering the water inlet cavity forms a vortex, enabling the rainwater to have a unified flow trend, facilitating the regulation of the rainwater. The first spoiler block and the second spoiler block arranged longitudinally disturb the vortex, effectively suppressing the continuous increase of the vortex. This hierarchical spoiler mechanism not only improves the adaptability of the device under different water volume conditions but also ensures that even under heavy rain conditions, the vortex can be maintained stable, preventing problems caused by excessive internal water pressure of the device. At the same time, the steady flow space in the water inlet cavity ensures that the rainwater can stably form a vortex when entering the bottom of the water inlet cavity, avoiding the disturbance in the initial stage, and further improving the performance and stability of the device.

[0022] (2) The present invention sets a number of nested annular grooves on the cylinder cover, and the width of the annular grooves gradually narrows from the outside to the center of the cylinder cover. When the water flow enters the recycling cylinder, it will quickly spread outward from the center position of the cylinder cover, helping to reduce the concentration of water flow in the central area, thereby reducing the formation of the central vortex, helping to reduce the direct impact of the water flow on the bottom or side walls, thereby reducing the local water pressure, making the water flow more evenly distributed in the water inlet space, and reducing the situation of overly strong local water flow.

[0023] (3) By opening spoiler holes on the second spoiler block, the present invention increases the specific area between the second spoiler block and the water flow, causing the vortex to interfere with the unity of the vortex rotation when contacting the spoiler holes, further dispersing the energy of the vortex, reducing the height and intensity of the vortex, effectively suppressing the excessive rise of the vortex caused by the increase in water volume, and ensuring the stable operation of the device under different water volumes. At the same time, the spoiler holes collide and mix more frequently with the impurities in the vortex, helping to disperse and precipitate the impurities in the rainwater to the bottom of the device, improving the purification efficiency of the rainwater, making the recycled rainwater clearer and more suitable for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0025] Figure 1 It is a front view schematic diagram of a preferred embodiment of the present invention;

[0026] Figure 2 is a front sectional schematic diagram of a preferred embodiment of the present invention;

[0027] Figure 3 is a schematic diagram of the dispersed distribution of the annular groove of a preferred embodiment of the present invention;

[0028] Figure 4 is a schematic diagram of the cooperation between the second spoiler block and the fixing frame of a preferred embodiment of the present invention;

[0029] Figure 5 is a schematic diagram of the structure of the second spoiler block of a preferred embodiment of the present invention.

[0030] In the figure: 1, water inlet; 2, water outlet; 3, sewage outlet; 4, recovery cylinder; 5, cylinder cover; 6, partition board; 7, water inlet cavity; 8, drainage cavity; 9, first spoiler block; 10, second spoiler block; 11, annular groove; 12, first spoiler space; 13, second spoiler space; 14, steady flow space; 15, annular sheet; 16, fixing block; 17, spoiler hole; 18, separation pipe; 19, sewage pipe. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0034] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] As Figure 1 and Figure 2 shown, a rainwater recycling device includes: a recycling cylinder 4 having a water inlet 1, a water outlet 2, and a sewage outlet 3, a cylinder cover 5 installed on the top of the recycling cylinder 4, and a flow disturbing component disposed inside the recycling cylinder 4;

[0036] A partition 6 is provided inside the recycling cylinder 4. The partition 6 divides the interior of the recycling cylinder 4 into a water inlet chamber 7 and a drainage chamber 8 located below the water inlet chamber 7. The water inlet 1 is communicated with the water inlet chamber 7, so that the water flow entering the water inlet chamber 7 generates a vortex. The flow disturbing component is located in the water inlet chamber 7;

[0037] The cylinder cover 5 is provided with annular grooves 11 nested with each other. The width of the annular grooves 11 gradually narrows from the outside of the cylinder cover 5 towards the center;

[0038] The water inlet 1 is connected to a first connecting pipe. A second connecting pipe is provided directly above the center of the cylinder cover 5. An inlet pipe is provided between the first connecting pipe and the second connecting pipe, and the inlet pipe connects the first connecting pipe and the second connecting pipe. Rainwater passes through the inlet pipe, and the inlet pipe divides the rainwater into two parts. One part enters the water inlet 1 through the first connecting pipe, and the other part enters directly above the center position of the cylinder cover 5 through the second connecting pipe, so that the rainwater enters the water inlet cavity 7 from the water inlet 1 and the annular groove of the cylinder cover 5 respectively. By dispersing and introducing the rainwater into the water inlet cavity 7, the impact force and pressure generated by a large amount of rainwater impacting the water inlet cavity 7 from the same position are effectively reduced, thereby reducing the intensity of the eddy current, effectively suppressing the excessive rise of the eddy current caused by the increase in water volume, and ensuring the stable operation of the device under different water volumes;

[0039] Among them, the width of the annular groove 11 gradually narrows from the outside of the cylinder cover 5 towards the center. The rainwater above the cylinder cover 5 falls vertically on the cylinder cover 5 and will flow into the water inlet cavity 7 through the annular groove. However, the width of the annular groove in the center range of the cylinder cover 5 is smaller, and the rainwater impacting at this position cannot all flow into the water inlet cavity 7 quickly. It will quickly spread outward from the center position of the cylinder cover 5 and flow into the water inlet cavity 7 through the annular groove with a higher width, which helps to reduce the water flow concentration in the central area, thereby reducing the formation of the central eddy current, helping to reduce the direct impact of the water flow on the bottom or side wall, thereby reducing the local water pressure, making the water flow more evenly distributed in the water inlet space, and reducing the situation of overly strong local water flow;

[0040] The rainwater flowing into the water inlet cavity 7 from the annular groove with a higher width can be more evenly distributed on the cross-section of the water inlet cavity 7, impact on the edge position of the eddy current in the water inlet cavity 7 from the cross-section and edge position of the water inlet cavity 7, interfere with the unity of the eddy current rotation, further disperse the energy of the eddy current, reduce the height and intensity of the eddy current, effectively suppress the excessive rise of the eddy current caused by the increase in water volume, make the water flow more evenly distributed in the water inlet space, reduce the situation of overly strong local water flow, and make the pressure in the water inlet cavity 7 stable.

[0041] In the rainwater recycling device, making the rainwater in the water inlet cavity 7 form a spiral water flow can help impurities in the rainwater, such as sediment and leaves, move outward under the action of centrifugal force, so that they can be more easily separated and deposited at the bottom of the device, facilitating subsequent cleaning and sewage discharge;

[0042] However, if the spiral trend of the eddy current is too large, the strong eddy current will enhance the impact force of the water flow, making it difficult for the impurities in the rainwater to be effectively separated and settled. This not only reduces the purification efficiency of the rainwater but also may increase the risk of blockage inside the device. In addition, the uneven distribution of the eddy current may also lead to uneven distribution of the water flow inside the device, affecting the collection and treatment efficiency of the rainwater. At the same time, the excessive impact force may not only damage the internal structure of the device, shortening its service life, but also increase noise and vibration, affecting the surrounding environment and user experience;

[0043] Therefore, a flow disturbing component needs to be set up. The flow disturbing component is used to suppress the upward trend of the spiral eddy current height in the water inlet chamber 7. The flow disturbing component includes: a number of first flow disturbing blocks 9 and a number of second flow disturbing blocks 10. For example, the number of the first flow disturbing blocks 9 is twelve and they are symmetrically distributed; the number of the second flow disturbing blocks 10 is twenty-four; the first flow disturbing blocks 9 are located below the second flow disturbing blocks 10 and are evenly distributed on the inner wall of the recovery cylinder 4. An installation frame is fixed above the second flow disturbing blocks 10 and the installation frame is installed inside the recovery cylinder 4; the positions where the first flow disturbing blocks 9 and the second flow disturbing blocks 10 are located respectively form a first flow disturbing space 12 and a second flow disturbing space 13.

[0044] The first flow disturbing blocks 9 and the second flow disturbing blocks 10 are arranged above the water inlet of the cylinder cover 5 to divide the area in the water inlet chamber 7, so that the positions where the first flow disturbing blocks 9 and the second flow disturbing blocks 10 are located are two limiting index positions for the rising height of the eddy current;

[0045] When the rainwater in the water inlet chamber 7 rotates in a vortex shape, with the superposition of the impact force of the rainwater, the rotation intensity of the eddy current state at the edge position of the water inlet chamber 7 is higher, and the eddy current will show a spiral upward trend. After the eddy current rises to the position of the first flow disturbing block 9, it is disturbed by the first flow disturbing block 9, alleviating the upward trend of the eddy current to a certain extent. If the impact of the rainwater is too large and the first flow disturbing block 9 cannot effectively disturb the eddy current, the continuously rising eddy current is disturbed by the second flow disturbing block 10 for another disturbance. This hierarchical flow disturbing mechanism not only improves the adaptability of the device under different water volume conditions but also ensures that even under heavy rain conditions, the eddy current can be kept stable, preventing problems caused by excessive water pressure inside the device.

[0046] As Figure 3 shown, in the present invention, the width of the annular groove 11 from the outside to the center of the cylinder cover 5 is where n≥3, r represents the radius of the cylinder cover 5, and i represents the number of the annular grooves 11.

[0047] In the present invention, the water inlet 1 is arranged on one side of the water inlet chamber 7, and the opening direction of the water inlet 1 forms an acute angle with the parallel direction of the recovery cylinder 4. The water outlet 2 and the sewage outlet 3 are located below the drainage chamber 8 and are communicated with the drainage chamber 8;

[0048] By making the opening direction of the water inlet 1 form an acute angle with the parallel direction of the recovery cylinder 4, the water flow will have a certain acceleration when entering the water inlet cavity 7, causing the rainwater to generate eddies in the water inlet cavity 7, helping impurities in the rainwater such as sediment and leaves to move outward under the action of centrifugal force, so that they can be more easily separated and deposited at the bottom of the device, facilitating subsequent cleaning and sewage discharge.

[0049] In the present invention, a steady flow space 14 without flow disturbance is formed between the first flow disturbing block 9 and the bottom of the water inlet cavity 7. Through the setting of the steady flow space 14, it is ensured that the rainwater can stably form eddies when entering the bottom of the water inlet cavity 7, avoiding the disturbance in the initial stage, and further improving the performance and stability of the device.

[0050] As Figure 4 shown, in the present invention, the mounting bracket includes: a plurality of annular pieces 15 nested one inside the other, where the number of annular pieces 15 ≥ 2, and fixing blocks 16 for fixing the annular pieces 15; a plurality of second flow disturbing blocks 10 are evenly distributed at the midline position of the annular pieces 15 and are fixed to the annular pieces 15 by bolts, and the number of the second flow disturbing blocks 10 distributed on the nested annular pieces is the same. For example, if the total number of the second flow disturbing blocks 10 is twenty-four and the number of annular pieces 15 is two, then each annular piece 15 is installed with twelve second flow disturbing blocks 10 and is evenly distributed, so that the density of the second flow disturbing blocks on the annular piece changes in an increasing trend from the outside to the inside.

[0051] As Figure 5 shown, in the present invention, the second flow disturbing block 10 is hollow, and flow disturbing holes 17 are opened on the second flow disturbing block 10;

[0052] Setting the second flow disturbing block 10 to be hollow increases the contact area with the water flow, enabling the water flow to more fully contact the surface of the flow disturbing block when passing through the flow disturbing block, thereby more effectively dispersing and disturbing the water flow, reducing the height and intensity of the eddies;

[0053] Setting the flow disturbing holes 17 further increases the contact area with the water flow, causing local turbulence when the water flow passes through the second flow disturbing block 10, which helps to break up the eddies in the water flow, reduce the rotation speed and height of the eddies, and thus more effectively inhibit the spiral rise of the eddies. At the same time, the flow disturbing holes 17 can increase the turbulence of the water flow, making the impurities in the rainwater more easily separated from the water flow and then settling to the bottom of the device, facilitating subsequent cleaning and sewage discharge.

[0054] In the present invention, the water outlet 2 is located on the side of the drainage cavity 8, and the sewage outlet 3 is located at the circular position at the bottom of the drainage cavity 8;

[0055] A separation pipe 18 and a sewage discharge pipe 19 which are communicated with each other are arranged in a drainage cavity 8. A circular groove is formed at the center position of a partition plate 6. The separation pipe 18 is communicated with the drainage cavity 8 through the circular groove. The sewage discharge pipe 19 is communicated with a sewage discharge port 3.

[0056] The separation pipe 18 is provided with leakage grooves, so that the water in the separation pipe 18 is separated into the drainage cavity 8 through the leakage grooves.

[0057] The height of the sewage discharge pipe 19 is higher than the width of the water outlet 2 in the horizontal position, so that the water in the drainage cavity 8 is discharged through the water outlet 2.

[0058] A stable eddy current is formed in a steady flow space 14. At this time, the impurities in the stable eddy current are evenly distributed in the eddy current. The stable eddy current enters the separation pipe 18 in the drainage cavity 8. Under the action of the eddy current rotation force, the eddy current will be discharged from the separation pipe 18 through the leakage grooves on the separation pipe 18 and enter the cavity of the drainage cavity 8. The impurities in the eddy current are intercepted by the mesh structure formed by the leakage grooves and enter the sewage discharge pipe 19 under the gravity of the impurities themselves and the impact of the water flow, and are discharged along the sewage discharge pipe 19 and the sewage discharge port 3.

[0059] Among them, since there are no leakage grooves on the sewage discharge pipe 19 and it is a circular pipe structure, and the contact position between the sewage discharge pipe 19 and the sewage discharge port 3 is in a sealed state, the height of the sewage discharge pipe 19 needs to be higher than the width of the water outlet 2 in the horizontal position so that the water in the drainage cavity 8 can be discharged through the water outlet 2.

[0060] Experiments on the influence of different circular diffusion-type annular grooves 11 on the flow distribution uniformity and water pressure in the water inlet cavity 7 are designed.

[0061] I. Experimental example:

[0062] (1) Preparation of experimental equipment and materials

[0063] 1. Prepare a transparent experimental container: Prepare a transparent hollow cylindrical rainwater harvesting device container (for observing the water flow dynamics, with a height of 150 cm and a diameter of 50 cm), a water flow control pump (for precisely controlling the water flow rate), a flow meter (for measuring the water flow rate under different designs), a water pressure sensor (for measuring the water pressure distribution in the water inlet cavity), and a mounting rack (specifically provided with two nested annular plates on the mounting rack. The number of second flow disturbance blocks on each annular plate is the same, both are twelve. Then, the density of the second flow disturbance blocks on the annular plate shows an increasing trend from the outside to the inside, and the gap between adjacent second flow disturbance blocks on the innermost annular plate is r, where r is the diameter of the second flow disturbance block).

[0064] Prepare several groups of cylinder covers with different annular groove distributions, among which,

[0065] Group A cylinder cover: The width of the annular groove shows a gradually narrowing trend from the center of the cylinder cover to the outside.

[0066] Group B cylinder cover: The width of the outer side of the cylinder cover is the same as that of the annular groove at the central position, and the specific width is one-eighth of the radius.

[0067] Group C cylinder cover: The width of the annular groove gradually narrows from the outer side of the cylinder cover towards the center. The change in the width of the annular groove is specifically opposite to that of the annular groove in Group A cylinder cover. The maximum width of several annular grooves in the cylinder cover is one-fourth of the radius of the cylinder cover.

[0068] Group D cylinder cover: The cylinder cover divides the cylinder cover into an inner part and an outer part at the position of half of the radius. The part close to the center of the cylinder cover is the inner part, and there is no annular groove inside. The width of the annular groove outside is one-tenth of the radius of the cylinder cover.

[0069] Group E cylinder cover: The cylinder cover divides the cylinder cover into an inner part and an outer part at the position of half of the radius. The part close to the center of the cylinder cover is the inner part. The widths of several annular grooves inside are equal, which is one-sixth of the radius of the cylinder cover, and there is no annular groove outside.

[0070] 2. For measuring and analyzing the water flow velocity field, a particle image velocimetry system PIV is used. A high-speed camera is used to detect the water flow dynamics and the formation of eddies, and the uniformity of the water flow velocity distribution is analyzed through a computer and data analysis software.

[0071] 3. Detection of the rising height of eddies: The purpose is to detect the height to which the eddies rise after the first flow disturbance space.

[0072] 4. Detection of eddy intensity: The intensity of the eddies is judged according to the height to which the eddies rise after the mounting frame. Among them, the rising height of 0 - 10 cm is a mild eddy, the rising height of 11 - 25 cm is a moderate eddy, the rising height of 26 - 40 cm is a strong eddy, and the rising height exceeding 40 cm is an ultra-strong eddy.

[0073] (2) Embodiment

[0074] Embodiment 1: Place the Group A cylinder cover 5 in the container of the cylindrical rainwater recycling device. The water pressure sensor is installed at different depth positions inside the container of the rainwater recycling device, and a mounting frame is placed in the middle of the container of the rainwater recycling device.

[0075] Start the water flow control pump. The water flow passes through the water inlet pipe. The water inlet pipe divides the water flow into two parts. One part of the water flow enters the water inlet 1 through the first connecting pipe, generating eddies in the water inlet cavity 7. The other part of the water flow enters directly above the center position of the cylinder cover 5 through the second connecting pipe. The water flow above the cylinder cover 5 falls vertically onto the cylinder cover 5 and will flow into the water inlet cavity 7 through the annular grooves on the cylinder cover 5.

[0076] At the same flow rate level, record the water flow velocity field data measured by the PIV system and the water pressure data recorded by the water pressure sensor; use a high-speed camera to record the behavior of the water flow entering the container, especially the formation of vortices and the uniformity of the water flow distribution; use data analysis software to process the data collected by the PIV and the water pressure sensor, analyze the water flow velocity distribution and the water pressure change, and through streamline visualization, convert the velocity field data into a graphical representation for a more intuitive understanding of the water flow behavior.

[0077] Example 2: It is substantially the same as Example 1, except that Group B cylinder covers 5 are used to measure the water pressure data, the formation of vortices and the uniformity of the water flow distribution;

[0078] Example 3: It is substantially the same as Example 1, except that Group C cylinder covers 5 are used to measure the water pressure data, the formation of vortices and the uniformity of the water flow distribution;

[0079] Example 4: It is substantially the same as Example 1, except that Group D cylinder covers 5 are used to measure the water pressure data, the formation of vortices and the uniformity of the water flow distribution;

[0080] Example 5: It is substantially the same as Example 1, except that Group E cylinder covers 5 are used to measure the water pressure data, the formation of vortices and the uniformity of the water flow distribution;

[0081] Integrate the data obtained from Example 1 to Example 5, as shown in Table 1;

[0082] Table 1

[0083]

[0084] In summary, by comparing Example 1 to Example 5, it can be concluded that in Example 3, the water pressure fluctuation is relatively the smallest and the uniformity of the water flow velocity distribution is the highest. The main reason is that the water flow above the cylinder cover 5 falls vertically on the cylinder cover 5 and will flow into the water inlet cavity 7 through the annular groove. However, the width of the annular groove within the center range of the cylinder cover 5 is relatively small, and the water flow impact at this position cannot all flow into the water inlet cavity 7 quickly. Instead, it will quickly spread outward from the center position of the cylinder cover 5 and flow into the water inlet cavity 7 through the annular groove with a higher width. This helps to reduce the water flow concentration in the central area, thereby reducing the formation of central vortices, and helps to reduce the direct impact of the water flow on the bottom or side walls, thereby reducing the local water pressure and making the water flow more evenly distributed within the water inlet space;

[0085] Moreover, the width of the annular groove 11 is set to gradually narrow from the outside to the center of the cylinder cover 5, which can reduce the velocity gradient in the transition area from the pipeline to the container. Since the water flow directly enters the container from the pipeline at a high speed, a high-speed eddy current will be formed in the center of the container. The annular groove 11 extends the path of the water flow entering the container, causing the water flow velocity to gradually decrease after entering the container, reducing the pressure fluctuation caused by the sudden change in velocity, thereby avoiding the occurrence of high-pressure areas in local regions, reducing the volatility of the water pressure, and reducing the phenomenon of uneven pressure.

[0086] (3) Experiments on the influence of the annular sheet with different densities of the second spoiler blocks on the uniformity of water flow distribution and water pressure in the water inlet chamber 7 in cooperation with the annular groove;

[0087] A. Experiment preparation:

[0088] 1. The first group: Prepare the mounting rack of the third embodiment. The density of the second spoiler blocks on the annular sheets sleeved on the mounting rack increases gradually from the outside to the inside, and the gap between adjacent second spoiler blocks on the innermost annular sheet is r, where r is the diameter of the second spoiler block;

[0089] 2. The second group: Prepare the mounting rack with annular sheets sleeved on it. The gap between adjacent second spoiler blocks on the innermost annular sheet is r, where r is the diameter of the second spoiler block, and the gap between adjacent second spoiler blocks on each annular sheet is r, so that the density of the second spoiler blocks on several annular sheets is relatively high;

[0090] 3. The third group: Prepare the mounting rack with annular sheets sleeved on it. The gap between adjacent second spoiler blocks on the innermost annular sheet is 3r, where r is the diameter of the second spoiler block, and the gap between adjacent second spoiler blocks on each annular sheet is 3r, so that the density of the second spoiler blocks on several annular sheets is relatively low;

[0091] 4. The fourth group: Prepare the mounting rack with annular sheets sleeved on it. The gap between adjacent second spoiler blocks on the innermost annular sheet is 2r, where r is the diameter of the second spoiler block, and the gap between adjacent second spoiler blocks on each annular sheet is 2r, so that the density of the second spoiler blocks on several annular sheets is moderate;

[0092] B. Experimental example

[0093] The third embodiment: Place the cylinder cover 5 of the above Group C in the container of the rainwater recycling device, install the water pressure sensor at different depth positions in the container of the rainwater recycling device, and place the mounting rack in the middle of the container of the rainwater recycling device below the cylinder cover 5 of Group C;

[0094] Start the water flow control pump to pass the water flow through the water inlet pipe. The water inlet pipe divides the water flow into two parts. One part of the water flow enters the water inlet 1 through the first connecting pipe, generating a vortex in the water inlet chamber 7. The other part of the water flow enters the position directly above the center of the cylinder cover 5 through the second connecting pipe. The water flow above the cylinder cover 5 vertically falls on the cylinder cover 5 and will flow into the water inlet chamber 7 through the annular groove on the cylinder cover 5;

[0095] At the same flow rate level, record the water flow velocity field data measured by the PIV system and the water pressure data recorded by the water pressure sensor; use a high-speed camera to record the behavior of the water flow entering the container, especially the formation of the vortex and the uniformity of the water flow distribution; use data analysis software to process the data collected by the PIV and the water pressure sensor, analyze the water flow velocity distribution and the water pressure change, and through streamline visualization, convert the velocity field data into a graphical representation for a more intuitive understanding of the water flow behavior.

[0096] Example 6: Substantially the same as Example 3, except that the mounting bracket prepared in the second group is used to measure the water pressure data, the formation of the vortex and the uniformity of the water flow distribution;

[0097] Example 7: Substantially the same as Example 3, except that the mounting bracket prepared in the third group is used to measure the water pressure data, the formation of the vortex and the uniformity of the water flow distribution;

[0098] Example 8: Substantially the same as Example 3, except that the mounting bracket prepared in the fourth group is used to measure the water pressure data, the formation of the vortex and the uniformity of the water flow distribution;

[0099] Integrate the data obtained from Example 3 and Examples 6 to 8, as shown in Table 2;

[0100]

[0101] By comparing Example 3 and Examples 6 to 8, it can be concluded that when the density of the second spoiler blocks on the annular pieces nested with each other on the mounting bracket changes in an increasing trend from the outside to the inside, the water pressure fluctuation is relatively the smallest and the uniformity of the water flow velocity distribution is the highest. The main reason is that when the water flow just enters the water inlet chamber through the cylinder cover, the density of the peripheral spoiler blocks is relatively low, enabling the water flow to enter the water inlet chamber smoothly, reducing the instantaneous disturbance of the water flow, and preventing the formation of violent vortices or local water flow congestion when the water flow enters the cavity. When the water flow flows through the central area of the water inlet chamber, the density of the spoiler blocks gradually increases. The high-density spoiler blocks can effectively break up and reduce the formed vortices, helping the water flow to be evenly distributed. The gradual intervention on the vortices avoids the negative impact of strong vortices on the water flow uniformity, thereby effectively dispersing the water flow kinetic energy, reducing the water pressure fluctuation caused by the concentration of the water flow, and contributing to ensuring the stability of the water pressure throughout the water inlet chamber. In summary, Example 3 is the optimal solution of the present invention.

[0102] When the present invention is in use, rainwater passes through the water inlet pipe. The water inlet pipe divides the rainwater into two parts. One part of the rainwater enters the water inlet 1 through the first connecting pipe and generates a vortex in the water inlet cavity 7. The other part of the rainwater enters the position directly above the center of the cylinder cover 5 through the second connecting pipe. The rainwater above the cylinder cover 5 falls vertically on the cylinder cover 5 and will flow into the water inlet cavity 7 through the annular groove. The width of the annular groove within the center range of the cylinder cover 5 is relatively small, and the rainwater impact at this position cannot all flow quickly into the water inlet cavity 7. Instead, it will quickly spread outward from the center position of the cylinder cover 5 and flow into the water inlet cavity 7 through the annular groove with a higher width, so that the rainwater enters the water inlet cavity 7 from the water inlet 1 and the annular groove of the cylinder cover 5 respectively;

[0103] The cylinder cover 5 is provided with a first spoiler 9 and a second spoiler 10 above the water inlet to divide the area in the water inlet cavity 7, so that the positions where the first spoiler 9 and the second spoiler 10 are located are two limiting index positions for the rising height of the vortex. In the swirling state of the rainwater in the water inlet cavity 7, with the superposition of the rainwater impact force, the swirling strength of the vortex state at the edge position of the water inlet cavity 7 is higher, and the vortex will show a spiral rising trend. After the vortex rises to the position of the first spoiler 9, it is interfered by the first spoiler 9, and to a certain extent, the rising trend of the vortex is alleviated. If the impact of the rainwater is too large and the first spoiler 9 cannot effectively disturb the vortex, the continuously rising vortex is interfered by the second spoiler 10 and disturbed again, so that the vortex strength is reduced, and the vortex gradually and stably enters the steady flow space 14;

[0104] The stable vortex formed in the steady flow space 14. At this time, the impurities in the stable vortex are evenly distributed in the vortex. The stable vortex enters the separation pipe 18 in the drainage cavity 8. Under the action of the swirling force of the vortex, the vortex will be discharged from the leakage groove on the separation pipe 18 and enter the cavity of the drainage cavity 8, while the impurities in the vortex are intercepted by the mesh structure formed by the leakage groove and enter the sewage discharge pipe 19 under the action of their own gravity and the impact of the water flow, and are discharged along the sewage discharge pipe 19 and the sewage discharge port 3.

[0105] Based on the ideal embodiments of the present invention as an inspiration, through the above description, relevant personnel can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A rainwater recycling device, comprising: A recovery cylinder having a water inlet, a water outlet and a sewage outlet, a cylinder cover installed on the top of the recovery cylinder, and a spoiler component arranged in the recovery cylinder; characterized in that: A partition is provided inside the recovery tube, and the partition divides the inside of the recovery tube into a water inlet chamber and a drainage chamber located below the water inlet chamber. The water inlet is connected to the water inlet chamber, so that the water flow entering the water inlet chamber generates a vortex, and the spoiler assembly is located in the water inlet chamber; The spoiler assembly is used to suppress the tendency of the spiral vortex in the water inlet chamber to increase in height, and the spoiler assembly includes: a plurality of first spoiler blocks and a plurality of second spoiler blocks; the plurality of first spoiler blocks are located below the plurality of second spoiler blocks and are evenly distributed on the inner wall of the recovery tube, a mounting frame is fixed above the plurality of second spoiler blocks, and the mounting frame is installed inside the recovery tube; The cylinder cover is provided with a plurality of annular grooves which are nested in annular formations, and the widths of the plurality of annular grooves gradually narrow from the outer side of the cylinder cover to the center.

2. A rainwater recycling device according to claim 1, characterized in that: The width of the plurality of annular grooves from the outer side of the cylinder cover to the center is , where n≥3, r represents the radius of the cylinder cover, and i represents the number of annular grooves.

3. A rainwater recycling device according to claim 1, characterized in that: The water inlet is arranged at one side of the water inlet cavity, and the opening direction of the water inlet forms an acute angle with the parallel direction of the recovery drum. The water outlet and the sewage outlet are located below the drainage cavity and are connected to the drainage cavity.

4. A rainwater recycling device according to claim 1, characterized in that: The positions of the first spoiler block and the second spoiler block form a first spoiler space and a second spoiler space respectively.

5. A rainwater recycling device according to claim 1, characterized in that: A steady flow space without flow disturbance is formed between the first spoiler block and the bottom of the water inlet chamber.

6. A rainwater recycling device according to claim 1, characterized in that: The mounting frame comprises: a plurality of annular sheets nested in annular shapes, and a fixing block for fixing the plurality of annular sheets; a plurality of second spoiler blocks are evenly distributed at the midline position of the annular sheets and fixed to the annular sheets by bolts, and the number of the second spoiler blocks distributed on the plurality of annular sheets nested in annular shapes is the same, so that the density of the second spoiler blocks changes in an increasing trend from the outside to the inside of the plurality of annular sheets.

7. A rainwater recycling device according to claim 1, characterized in that: The second spoiler block is hollow and has a plurality of spoiler holes.

8. A rainwater recycling device according to claim 1, characterized in that: The water outlet is located at the side of the drainage cavity, and the sewage outlet is located at a circular position at the bottom of the drainage cavity; The drainage cavity is provided with a separation pipe and a sewage pipe which are interconnected, a circular groove is provided at the center of the partition, the separation pipe is connected with the drainage cavity through the circular groove, and the sewage pipe is connected with the sewage outlet; The separation pipe is provided with a plurality of drain grooves, so that the water in the separation pipe is separated into the drainage cavity through the drain grooves.

9. A rainwater recycling device according to claim 8, characterized in that: The height of the sewage pipe is higher than the width of the water outlet in a horizontal position, so that the water in the drainage cavity is discharged through the water outlet.

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