Rainwater recovery device

Abstract

The rainwater recycling device comprises a recycling barrel provided with a water inlet, a water outlet and a sewage draining exit, a barrel cover installed at the top of the recycling barrel, and a turbulent flow assembly arranged in the recycling barrel. Rainwater entering the water inlet cavity forms vortexes through the design of the water inlet, the rainwater has the unified flowing trend, the rainwater is conveniently regulated and controlled, the vortexes are disturbed through the first turbulent flow blocks and the second turbulent flow blocks which are longitudinally arranged, continuous rising of the vortexes is effectively restrained, and the rainwater collecting effect is improved. According to the graded turbulent flow mechanism, the adaptability of the device under different water volume conditions is improved, it is ensured that eddy current can be kept stable even under the rainstorm condition, the problem caused by the too high water pressure in the device is solved, meanwhile, the flow stabilizing space in the water inlet cavity ensures that the eddy current can be stably formed when rainwater enters the bottom of the water inlet cavity, and the water inlet efficiency is improved. Disturbance in the initial stage is avoided, and the performance and stability of the device are further improved.

Description

Technical Field

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

[0002] With the acceleration of global climate change and urbanization, the sustainable management of water resources has become increasingly important. As an important freshwater resource, the recycling and utilization of rainwater is of great significance to alleviating urban water shortages, reducing flood disasters, and improving the urban ecological environment. Faced with increasingly severe water shortages and environmental problems, how to efficiently use 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. If rainwater in the drainage system of buildings, especially precipitation during the rainy season, is not effectively utilized, it will not only cause a waste of water resources, but may also cause problems such as urban waterlogging.

[0003] However, traditional rainwater recycling devices, such as those described in Taiwan's new patent No. M513230, although they achieve rainwater collection and preliminary purification to a certain extent, have obvious limitations when dealing with different rainfall amounts. These devices usually divide the internal space of the device into an inlet space and a drain space by setting a partition, and the rainwater entering the inlet space forms a vortex through the design of the water inlet, thereby increasing the contact opportunity between the water flow and impurities, and achieving 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 spoiler device (such as a spoiler pad or a protrusion) set in the device, it will be impossible to effectively suppress the continued rise of the vortex, resulting in a sharp increase in the water pressure in the inlet space, and may even cause problems such as device damage or flooding.

[0004] Therefore, in order to solve the above problems, a rainwater recycling device is designed, which 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 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 with a water inlet, a water outlet and a sewage outlet, a cylinder cover installed on the top of the recycling cylinder, and a spoiler component arranged in the recycling cylinder;

[0007] A partition is provided inside the recovery tube, which 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;

[0008] The spoiler assembly is used to suppress the tendency of the spiral vortex in the water inlet chamber to increase in height. 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;

[0009] The cylinder cover is provided with a plurality of annular grooves which are nested in annular circles, and the widths of the plurality of annular grooves gradually narrow from the outer side to the center of the cylinder cover.

[0010] In a preferred embodiment of the present invention, the width of the plurality of annular grooves from the outer side of the cylinder cover to the center is Wherein, 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 drum, and the water outlet and the sewage outlet are located below the drainage cavity and are connected to the drainage cavity.

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

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

[0014] In a preferred embodiment of the present invention, the mounting frame includes: 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.

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

[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 a circular position at the bottom of the drainage cavity;

[0017] A separation pipe and a sewage pipe are connected to each other in the drainage cavity. A circular groove is provided at the center of the partition. The separation pipe is connected to the drainage cavity through the circular groove, and the sewage pipe is connected to the sewage outlet.

[0018] The separation pipe is provided with a plurality of leakage grooves, 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 in a 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 has the following beneficial effects:

[0021] (1) The present invention provides a rainwater recycling device. The water inlet is designed to form a vortex when rainwater enters the water inlet chamber, so that the rainwater has a uniform flow trend, which is convenient for regulating the rainwater. The vortex is disturbed by a first spoiler block and a second spoiler block arranged longitudinally, effectively suppressing the vortex from continuing to increase. This graded spoiler mechanism not only improves the adaptability of the device under different water volume conditions, but also ensures that the vortex can be kept stable even under heavy rain conditions, preventing problems caused by excessive water pressure inside the device. At the same time, the steady flow space in the water inlet chamber ensures that the rainwater can stably form a vortex when entering the bottom of the water inlet chamber, avoiding disturbances in the initial stage, and further improving the performance and stability of the device.

[0022] (2) The present invention provides a plurality of annular grooves which are nested in each other on the cylinder cover, and the width of the annular grooves tends to gradually narrow from the outer side of the cylinder cover to the center, so that when water flows into the recovery cylinder, it will quickly diffuse outward at the center of the cylinder cover, which helps to reduce the concentration of water flow in the central area, thereby reducing the formation of central vortex, helping to reduce the direct impact of water flow on the bottom or side wall, thereby reducing local water pressure, making the water flow more evenly distributed in the water inlet space, and reducing the situation where the local water flow is too strong.

[0023] (3) The present invention increases the specific area of ​​the second spoiler block to the water flow by opening a spoiler hole on the second spoiler block, so that the vortex interferes with the uniformity of the vortex rotation when it contacts the spoiler hole, further disperses the energy of the vortex, reduces the height and intensity of the vortex, and effectively suppresses the excessive rise of the vortex caused by the increase in water volume, ensuring that the device can operate stably under different water volumes; at the same time, the spoiler hole collides and mixes with impurities in the vortex more frequently, which helps to disperse and precipitate impurities in the rainwater to the bottom of the device, thereby improving the purification efficiency of rainwater and making the recovered rainwater clearer and suitable for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0026] Figure 2 is a schematic cross-sectional view of a preferred embodiment of the present invention;

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

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

[0029] Figure 5 It is a schematic structural diagram of a second spoiler block according to 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; 7, water inlet chamber; 8, drainage chamber; 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 DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and 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, and therefore cannot be understood as limiting the scope of protection 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 indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0035] like Figure 1 and Figure 2 As shown, a rainwater recycling device comprises: a recycling barrel 4 having a water inlet 1, a water outlet 2 and a sewage outlet 3, a barrel cover 5 installed on the top of the recycling barrel 4, and a spoiler component arranged in the recycling barrel 4;

[0036] A partition 6 is provided inside the recovery tube 4, and the partition 6 divides the inside of the recovery tube 4 into a water inlet chamber 7 and a drainage chamber 8 located below the water inlet chamber 7. The water inlet 1 is connected to the water inlet chamber 7, so that the water flow entering the water inlet chamber 7 generates a vortex, and the spoiler component is located in the water inlet chamber 7;

[0037] The cylinder cover 5 is provided with annular grooves 11 which are nested one inside the other. The width of the annular grooves 11 gradually narrows from the outer side of the cylinder cover 5 to the center.

[0038] The water inlet 1 is connected with a first connecting pipe, and a second connecting pipe is provided at a position just above the center of the cylinder cover 5. A water inlet pipe is provided between the first connecting pipe and the second connecting pipe, and the water inlet pipe connects the first connecting pipe and the second connecting pipe. Rainwater passes through the water inlet pipe, and the water inlet pipe divides the rainwater into two parts, one part of which enters the water inlet 1 through the first connecting pipe, and the other part enters just above the center of the cylinder cover 5 through the second connecting pipe, so that 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 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 vortex, effectively suppressing the excessive rise of the vortex due to the increase in water volume, and ensuring that the device can operate stably under different water volumes;

[0039] The width of the annular groove 11 gradually narrows from the outside of the cylinder cover 5 to the center. Rainwater above the cylinder cover 5 falls vertically on the cylinder cover 5 and flows into the water inlet cavity 7 through the annular groove. The width of the annular groove in the center of the cylinder cover 5 is small. Rainwater impact at this position cannot flow into the water inlet cavity 7 quickly. It will quickly spread outward at the center of the cylinder cover 5 and flow into the water inlet cavity 7 from the annular groove with a wider width, which helps to reduce the concentration of water flow in the central area, thereby reducing the formation of central vortex, and helps to reduce the direct impact of water flow on the bottom or side wall, thereby reducing local water pressure, so that the water flow is more evenly distributed in the water inlet space, and the situation of excessive local water flow is reduced.

[0040] The rainwater flowing into the water inlet chamber 7 from the wider annular groove can be more evenly distributed on the cross section of the water inlet chamber 7, and impact the edge position of the vortex in the water inlet chamber 7 from the cross section and edge position of the water inlet chamber 7, thereby interfering with the uniformity of the vortex rotation, further dispersing the energy of the vortex, reducing the height and intensity of the vortex, and effectively suppressing the excessive rise of the vortex caused by the increase in water volume, so that the water flow is more evenly distributed in the water inlet space, reducing the situation of excessive local water flow, and stabilizing the pressure in the water inlet chamber 7.

[0041] In the rainwater recycling device, the spiral flow of rainwater in the water inlet chamber 7 can help impurities such as sand, leaves, etc. in the rainwater 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, which is convenient for subsequent cleaning and sewage discharge;

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

[0043] Therefore, it is necessary to set up a spoiler component, which is used to suppress the tendency of the spiral vortex height rising in the water inlet chamber 7. The spoiler component includes: a plurality of first spoiler blocks 9 and a plurality of second spoiler blocks 10. For example, the number of first spoiler blocks 9 is twelve and symmetrically distributed; the number of second spoiler blocks 10 is twenty-four; the first spoiler blocks 9 are located below the second spoiler blocks 10 and are evenly distributed on the inner wall of the recovery tube 4, and a mounting frame is fixed above the second spoiler blocks 10, and the mounting frame is installed inside the recovery tube 4; the positions of the first spoiler blocks 9 and the second spoiler blocks 10 respectively form a first spoiler space 12 and a second spoiler space 13.

[0044] The cylinder cover 5 is provided with a first spoiler 9 and a second spoiler 10 above the water inlet, dividing the area in the water inlet cavity 7 so that the positions of the first spoiler 9 and the second spoiler 10 are two limiting index positions of the vortex rising height;

[0045] As the rainwater in the water inlet chamber 7 rotates in a vortex shape, with the superposition of the impact force of the rainwater, the higher the rotation intensity of the vortex state at the edge of the water inlet chamber 7, the more the vortex will tend to spiral upward. After the vortex rises to the position of the first spoiler block 9, it is disturbed by the first spoiler block 9, which alleviates the upward trend of the vortex to a certain extent. However, if the impact of the rainwater is too great, the first spoiler block 9 cannot effectively disturb the vortex. The vortex that continues to rise is disturbed by the second spoiler block 10 and is disturbed again. This graded disturbance mechanism not only improves the adaptability of the device under different water volume conditions, but also ensures that the vortex can remain stable even under heavy rain conditions, thereby preventing problems caused by excessive water pressure inside the device.

[0046] like Figure 3 As shown, in the present invention, the width of the annular groove 11 is from the outside of the cylinder cover 5 to the center. Wherein, 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, and the water outlet 2 and the sewage outlet 3 are located below the drainage chamber 8 and communicate with the drainage chamber 8;

[0048] By making the opening direction of the water inlet 1 at an acute angle to the parallel direction of the recovery tube 4, the water flow will have a certain acceleration when entering the water inlet chamber 7, so that the rainwater will generate vortex in the water inlet chamber 7, which helps impurities in the rainwater such as mud, leaves, etc. 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, which is convenient for subsequent cleaning and sewage discharge.

[0049] In the present invention, a non-disturbing steady flow space 14 is formed between the first spoiler block 9 and the bottom of the water inlet chamber 7. The provision of the steady flow space 14 ensures that rainwater can stably form a vortex when entering the bottom of the water inlet chamber 7, thereby avoiding disturbances in the initial stage and further improving the performance and stability of the device.

[0050] like Figure 4 As shown, in the present invention, the mounting frame includes: a plurality of annular sheets 15 which are nested in annular shapes, wherein the number of the annular sheets 15 is ≥2, and a fixing block 16 for fixing the annular sheets 15; a plurality of second spoiler blocks 10 are evenly distributed at the midline position of the annular sheets 15 and fixed to the annular sheets 15 by bolts, and the number of the second spoiler blocks 10 distributed on the annular sheets which are nested in annular shapes is the same. For example, if the total number of the second spoiler blocks 10 is twenty-four and the number of the annular sheets 15 is two, then the number of the second spoiler blocks 10 installed on each annular sheet 15 is twelve and evenly distributed, so that the density of the second spoiler blocks increases from the outside to the inside of the annular sheet.

[0051] like Figure 5 As shown, in the present invention, the second spoiler block 10 is hollow, and a spoiler hole 17 is opened on the second spoiler block 10;

[0052] The second spoiler 10 is hollow, which increases the contact area with the water flow, so that the water flow can more fully contact the surface of the spoiler when passing through the spoiler, thereby more effectively dispersing and disturbing the water flow and reducing the height and intensity of the vortex;

[0053] The spoiler hole 17 is provided to further increase the contact area with the water flow, so that the water flow generates local turbulence when passing through the second spoiler block 10, which helps to break up the vortex in the water flow and reduce the rotation speed and height of the vortex, thereby more effectively suppressing the spiral rise of the vortex. At the same time, the spoiler hole 17 can increase the turbulence of the water flow, making it easier for impurities in the rainwater to separate from the water flow and then settle to the bottom of the device, which is convenient for 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 bottom circular position of the drainage cavity 8;

[0055] The drainage chamber 8 is provided with a separation pipe 18 and a sewage pipe 19 which are interconnected. A circular groove is provided at the center of the partition 6. The separation pipe 18 is connected to the drainage chamber 8 through the circular groove, and the sewage pipe 19 is connected to the sewage outlet 3.

[0056] The separation pipe 18 is provided with a drain groove, so that the water in the separation pipe 18 is separated into the drainage chamber 8 through the drain groove;

[0057] The height of the drain 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 vortex is 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 tube 18 in the drainage chamber 8. Under the action of the vortex rotation force, the vortex will be discharged from the separation tube 18 through the leakage groove on the separation tube 18 and enter the cavity of the drainage chamber 8, while the impurities in the vortex are intercepted by the mesh structure formed by the leakage groove, and enter the sewage pipe 19 under the impact of the impurities' own gravity and the water flow, and discharged along the sewage pipe 19 and the sewage outlet 3;

[0059] Among them, because there is no leakage groove on the sewage pipe 19 and it is a circular tube structure, the contact position between the sewage pipe 19 and the sewage outlet 3 is in a sealed state, so the height of the sewage 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 chamber 8 can be discharged through the water outlet 2.

[0060] Experiments on the effects of different circular diffusion annular groove 11 designs on the uniformity of water flow distribution and water pressure in the water inlet cavity 7;

[0061] 1. Experimental example:

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

[0063] 1. Prepare a transparent experimental container: prepare a cylindrical rainwater recycling device container with a transparent hollow structure (in order to observe the dynamics of water flow, wherein the height is 150 cm and the diameter is 50 cm), a water flow control pump (for accurately controlling the flow rate of water flow), 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 chamber), and a mounting frame (the mounting frame is specifically provided with two nested annular plates, and the number of second spoiler blocks on each annular plate is the same, which is twelve. Then, the density of the second spoiler blocks on the annular plate changes from the outside to the inside in an increasing trend, and the gap between the adjacent second spoiler blocks on the innermost annular plate is r, where r is the diameter of the second spoiler block);

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

[0065] A group of cylinder covers: the width of the annular groove gradually narrows from the center of the cylinder cover to the outside;

[0066] Group B cylinder cover: The width of the annular groove on the outer side and the center of the cylinder cover is the same, and the width is specifically one eighth of the radius;

[0067] C group cylinder cover: the width of the annular groove gradually narrows from the outside to the center of the cylinder cover. The width change of the annular groove is opposite to that of the annular groove in the cylinder cover of group A. The maximum width of several annular grooves in the cylinder cover is one quarter of the radius of the cylinder cover.

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

[0069] Group E cylinder cover: The cylinder cover is divided into inner and outer parts at the half radius position. The inner part is close to the center of the cylinder cover. The width of several annular grooves inside is equal, which is one sixth of the cylinder cover radius, and there is no annular groove on the outer part.

[0070] 2. To measure and analyze the water velocity field, the particle image velocimetry system PIV is used. A high-speed camera is used to detect the water flow dynamics and vortex formation. The uniformity of the water flow velocity distribution is analyzed by a computer and data analysis software.

[0071] 3. Vortex rising height detection: The purpose is to detect the height to which the vortex rises after the first turbulence space.

[0072] 4. Eddy current intensity detection: The intensity of the eddy current is judged according to the height to which the eddy current rises after the mounting frame. Among them, the rising height of 0-10cm is a mild eddy current, the rising height of 11-25cm is a moderate eddy current, the rising height of 26-40cm is a strong eddy current, and the rising height of more than 40cm is an ultra-strong eddy current.

[0073] (II) Embodiment

[0074] Embodiment 1: The cylinder cover 5 of group A is placed in a cylindrical rainwater recycling device container, the water pressure sensor is installed at different depths in the rainwater recycling device container, and a mounting frame is placed in the middle of the rainwater recycling device container;

[0075] Start the water flow control pump to make 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, generates vortex in the water inlet cavity 7, and the other part of the water flow enters just above the center of the cylinder cover 5 through the second connecting pipe. The water flow above the cylinder cover 5 falls vertically on the cylinder cover 5 and flows into the water inlet cavity 7 through the annular groove on the cylinder cover 5.

[0076] At the same flow level, record the water 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 water flowing into the container, especially the formation of vortices and the uniformity of water flow distribution. Use data analysis software to process the data collected by PIV and water pressure sensors, analyze the water velocity distribution and water pressure changes, and convert the velocity field data into a graphical representation through streamline visualization to more intuitively understand the water flow behavior.

[0077] Embodiment 2: It is substantially the same as the embodiment 2, except that a group B cylinder cover 5 is used to measure water pressure data, vortex formation and uniformity of water flow distribution;

[0078] Embodiment 3: It is substantially the same as the embodiment 1, except that a C-group cylinder cover 5 is used to measure water pressure data, vortex formation and uniformity of water flow distribution;

[0079] Embodiment 4: It is substantially the same as the embodiment 1, except that a D-group cylinder cover 5 is used to measure water pressure data, vortex formation and uniformity of water flow distribution;

[0080] Embodiment 5: It is substantially the same as the embodiment 1, except that the E-group cylinder cover 5 is used to measure the water pressure data, the formation of vortex and the uniformity of water flow distribution;

[0081] The data obtained from Example 1 to Example 5 are integrated as shown in Table 1;

[0082] Table 1

[0083]

[0084] In summary, by comparing the first to fifth embodiments, it can be concluded that in the third embodiment, the water pressure fluctuation is relatively the smallest and the water flow velocity distribution uniformity is the highest. This is mainly because 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, while the width of the annular groove in the center of the cylinder cover 5 is small. The water flow impact at this position cannot flow into the water inlet cavity 7 quickly, and will quickly diffuse outward at the center of the cylinder cover 5 and flow into the water inlet cavity 7 from the annular groove with a wider width, which helps to reduce the concentration of water flow in the central area, thereby reducing the formation of the central vortex, and helps to reduce the direct impact of the water flow on the bottom or side wall, thereby reducing the local water pressure, so that the water flow is more evenly distributed in the water inlet space;

[0085] Moreover, the width of the annular groove 11 is gradually narrowed from the outside of the cylinder cover 5 to the center, which can reduce the velocity gradient of the water flow in the transition area from the pipeline to the container. Because the water flow enters the container directly from the pipeline at a high speed, a high-speed vortex will be formed in the center of the container. The annular groove 11 extends the path for the water flow to enter the container, so that the water flow velocity gradually decreases 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 areas, thereby reducing the volatility of water pressure and reducing the phenomenon of uneven pressure.

[0086] (iii) Experiments on the influence of the annular plates with different densities of the second spoiler and the annular grooves on the uniformity of water flow distribution and water pressure in the water inlet cavity 7;

[0087] A. Experimental preparation:

[0088] 1. The first group: prepare the mounting frame of Example 3, the density of the second spoiler blocks on the annular sheets on the mounting frame increases from the outside to the inside, and the gap between the 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 a mounting frame, on which annular sheets are arranged one after another, 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 high;

[0090] 3. The third group: prepare a mounting frame, on which annular sheets are arranged one after another, 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 low;

[0091] 4. The fourth group: prepare a mounting frame, on which annular sheets are placed one after another, the gap between adjacent second spoilers on the innermost annular sheet is 2r, where r is the diameter of the second spoiler, and the gap between adjacent second spoilers on each annular sheet is 2r, so that the density of the second spoilers on several annular sheets is moderate;

[0092] B. Experimental Examples

[0093] Embodiment 3: The above-mentioned C group barrel cover 5 is placed in the rainwater recycling device container, the water pressure sensor is installed at different depths in the rainwater recycling device container, and a mounting frame is placed in the middle of the rainwater recycling device container below the C group barrel cover 5;

[0094] Start the water flow control pump to make 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, generates vortex in the water inlet cavity 7, and the other part of the water flow enters just above the center of the cylinder cover 5 through the second connecting pipe. The water flow above the cylinder cover 5 falls vertically on the cylinder cover 5 and flows into the water inlet cavity 7 through the annular groove on the cylinder cover 5.

[0095] At the same flow level, record the water 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 water flowing into the container, especially the formation of vortices and the uniformity of water flow distribution. Use data analysis software to process the data collected by PIV and water pressure sensors, analyze the water velocity distribution and water pressure changes, and convert the velocity field data into a graphical representation through streamline visualization to more intuitively understand the water flow behavior.

[0096] Embodiment 6: The same as Embodiment 3, except that the second set of prepared mounting frames is used to measure water pressure data, vortex formation and uniformity of water flow distribution;

[0097] Embodiment 7: The same as Embodiment 3, except that the mounting frame prepared by the third group is used to measure the water pressure data, the formation of vortices and the uniformity of water flow distribution;

[0098] Embodiment 8: The same as Embodiment 3, except that the mounting frame prepared in the fourth group is used to measure the water pressure data, the formation of vortices and the uniformity of water flow distribution;

[0099] The data obtained from Example 3, Example 6 to Example 8 are integrated, as shown in Table 2;

[0100]

[0101] By comparing Example 3 with Example 6 to Example 8, it can be concluded that the density of the second spoiler blocks on the annular sheets nested in an annular pattern on the mounting frame increases from the outside to the inside, the water pressure fluctuation is relatively minimal, and the water flow velocity distribution uniformity is the highest. This is mainly because, when the water flow just enters the water inlet chamber through the cylinder cover, the density of the outer spoiler blocks is relatively low, so that the water flow enters the water inlet chamber smoothly, reducing the instantaneous disturbance of the water flow, and preventing the water flow from forming violent vortices or local water flow congestion when entering the chamber. 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 vortices that have been formed, help the water flow to be evenly distributed, and gradually intervene in the vortices, thereby avoiding the negative impact of strong vortices on the uniformity of the water flow, thereby effectively dispersing the kinetic energy of the water flow, reducing the water pressure fluctuations caused by the concentration of the water flow, and helping to ensure that the water pressure in the entire water inlet chamber remains stable. In summary, Example 3 is the optimal solution of the present invention.

[0102] When the present invention is used, rainwater passes through the water inlet pipe, which divides the rainwater into two parts, one part of which enters the water inlet 1 through the first connecting pipe, generates a vortex in the water inlet cavity 7, and the other part of the rainwater enters 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 flows into the water inlet cavity 7 through the annular groove. However, the width of the annular groove in the center of the cylinder cover 5 is small, and the rainwater impact at this position cannot all flow into the water inlet cavity 7 quickly. It will quickly diffuse outward at the center of the cylinder cover 5 and flow into the water inlet cavity 7 from the annular groove with a larger 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 barrel cover 5 is provided with a first spoiler block 9 and a second spoiler block 10 above the water inlet, and the area in the water inlet chamber 7 is divided so that the positions of the first spoiler block 9 and the second spoiler block 10 are two limiting index positions of the vortex rising height. When the rainwater in the water inlet chamber 7 rotates in a vortex shape, as the impact force of the rainwater is superimposed, the higher the rotation intensity of the vortex state at the edge of the water inlet chamber 7, the more the vortex will tend to spiral upward. After the vortex rises to the position of the first spoiler block 9, it is disturbed by the first spoiler block 9, which alleviates the vortex rising trend to a certain extent. However, the impact of the rainwater is too large, and the first spoiler block 9 cannot effectively disturb the vortex. The vortex that continues to rise is disturbed by the second spoiler block 10, and is disturbed again, so that the vortex intensity is reduced, and the vortex gradually and stably enters the steady flow space 14.

[0104] A stable vortex is 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 tube 18 in the drainage chamber 8. Under the action of the vortex rotational force, the vortex will be discharged from the separation tube 18 through the leakage groove on the separation tube 18 and enter the cavity of the drainage chamber 8, while the impurities in the vortex are intercepted by the mesh structure formed by the leakage groove, and enter the sewage pipe 19 under the impact of the impurities' own gravity and the water flow, and are discharged along the sewage pipe 19 and the sewage outlet 3.

[0105] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present 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 Wherein, 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 1, 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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