A rainwater collection and classification treatment water resource utilization device

Abstract

The present invention discloses a device for collecting and grading rainwater for water resource utilization, comprising a multi-stage treatment mechanism buried in a depression, at least one rainwater introduction mechanism installed at the upper end of the multi-stage treatment mechanism, the rainwater introduction mechanism being connected to the multi-stage treatment mechanism, the multi-stage treatment mechanism being connected to the graded water collection mechanism via a water transmission pipe system, and the multi-stage treatment mechanism being connected to the silt removal mechanism via a silt removal pipe system. The present invention can grade rainwater according to different needs, avoiding the long-term storage of rainwater that leads to deterioration of water quality, so that the collected rainwater can be fully utilized; and the initial investment cost is reduced, and regular silt removal reduces maintenance costs. The present invention is applicable to the technical field of rainwater collection and reuse.

Description

Technical Field

[0001] The present invention belongs to the technical field of rainwater collection and reuse, and in particular relates to a rainwater collection and graded treatment water resource utilization device. Background Art

[0002] Rainwater harvesting is a sustainable water resource management method. By collecting, storing, and utilizing rainwater, it can reduce dependence on traditional water sources, alleviate urban flooding, and promote ecological sustainability. While rainwater harvesting offers numerous advantages, it also has limitations and potential drawbacks. These include: 1. High initial investment costs, requiring the installation of a water collection system (rooftop drainage pipes, storage tanks, filters, etc.), particularly the high cost of underground storage tanks or advanced purification systems. 2. Water quality issues and health risks. Rainwater may contain particulate matter (PM2.5) from the air, heavy metals leached from roofing materials (such as asphalt shingles and lead paint), and organic matter such as bird droppings. Improper storage can lead to the growth of algae and bacteria (such as Legionella), potentially affecting health. For drinking or bathing, additional purification (such as reverse osmosis and ultraviolet disinfection) is required, significantly increasing costs. 3. Water harvesting is highly dependent on rainfall, remaining idle during dry seasons and experiencing insufficient storage capacity during periods of heavy rainfall, such as heavy rains. This means that due to limited storage capacity, water may overflow during heavy rains and be insufficient during periods of prolonged dry spells. 4. High maintenance and management requirements require regular cleaning of filters and removal of sediment from water tanks to prevent blockage and pollution. Long-term accumulation of mud and sand in water storage containers affects water quality on the one hand and reduces water storage capacity on the other. Summary of the Invention

[0003] The present invention provides a rainwater collection and classification treatment water resource utilization device, which is used to perform classification treatment on rainwater according to different needs, avoiding the long-term storage of rainwater, which may lead to deterioration of water quality, so that the collected rainwater can be fully utilized; and the initial investment cost is reduced, and the maintenance cost is reduced by regular silt removal.

[0004] To achieve the above object, the technical solutions adopted by the present invention are as follows:

[0005] A rainwater collection and graded treatment water resource utilization device includes a multi-stage treatment mechanism buried in a depression, at least one rainwater introduction mechanism is installed at the upper end of the multi-stage treatment mechanism, the rainwater introduction mechanism is connected to the multi-stage treatment mechanism, the multi-stage treatment mechanism is connected to the graded water collection mechanism through a water supply pipe system, and the multi-stage treatment mechanism is connected to the silt removal mechanism through a silt removal pipe system.

[0006] Furthermore, the rainwater inlet mechanism includes a water guide base detachably connected to the upper end of the multi-stage treatment mechanism, an anti-falling protective cover is elastically connected to the upper end of the water guide base, and a water guide channel is formed between the water guide base and the anti-falling protective cover.

[0007] Furthermore, the water-conducting base includes a base body detachably connected to the upper end of the multi-stage treatment mechanism through a connecting edge, and a center seat is provided at the center of the base body. The center seat is connected to the base body through multiple connecting strips, and a water guide port is formed between adjacent connecting strips.

[0008] Furthermore, the anti-fall protective cover includes a cover-like body with an upwardly protruding middle part, a plurality of concentrically arranged annular grooves are opened on the upper end surface of the cover-like body, a transition edge is constructed at the outer edge of the cover-like body and at the upper end of the connecting edge, and a plurality of water inlets are evenly opened along the circumference of the transition edge, and each of the water inlets is connected to the water guide channel.

[0009] Furthermore, a vertical assembly tube is constructed on the center seat, and a connecting spring is arranged in the vertical assembly tube. The lower end of the connecting spring is fixed to the center seat, and the upper end of the connecting spring is fixed to a spring seat. The lower end of a connecting screw passes through the center of the anti-fall protective cover and is threadedly connected to the spring seat.

[0010] Furthermore, the multi-stage treatment mechanism includes a multi-stage treatment kettle buried below the ground, a primary treatment chamber is formed on the upper part of the multi-stage treatment kettle, a secondary treatment chamber is formed below the primary treatment chamber, a filter cover is arranged between the primary treatment chamber and the secondary treatment chamber, an opening and closing unit is connected to the filter cover, and a tertiary treatment chamber is connected to the outside of the secondary treatment chamber, and the primary treatment chamber, the secondary treatment chamber and the tertiary treatment chamber are all connected to the water supply pipe system.

[0011] Furthermore, the opening and closing unit includes a fixed cylinder coaxially installed on the small-diameter end of the filter cover, a movable cylinder that can move vertically is installed on the outside of the fixed cylinder, a floating ring is detachably connected to the lower end of the movable cylinder, a first spiral opening extending along its axis thread is opened on the cylinder wall of the fixed cylinder, and a second spiral opening extending along its axis thread is opened on the cylinder wall of the movable cylinder. When the first spiral opening and the second spiral opening are partially or completely overlapped, the opening and closing unit connects the primary treatment chamber and the secondary treatment chamber; when the first spiral opening and the second spiral opening are completely staggered, the opening and closing unit separates the primary treatment chamber and the secondary treatment chamber.

[0012] Furthermore, a first sedimentation zone is constructed at the lower end of the primary treatment chamber, a second sedimentation zone is constructed at the lower end of the secondary treatment chamber, and a third sedimentation zone is constructed at the lower end of the tertiary treatment chamber. A first annular sleeve and a second annular sleeve are mounted on the outer periphery of the multi-stage treatment kettle. A plurality of first oblique flow ports are opened along the circumference of the first sedimentation zone at the lower end, and these first oblique flow ports are connected to the silt discharge pipe system through the first annular sleeve. A plurality of second oblique flow ports are opened along the circumference of the second sedimentation zone. A plurality of third oblique flow ports are opened along the circumference of the third sedimentation zone. The second oblique flow ports and the third oblique flow ports are connected to the silt discharge pipe system through the second annular sleeve.

[0013] Furthermore, the graded water collection mechanism includes a water collection pool, which has a first water collection chamber, a second water collection chamber and a third water collection chamber that are independent of each other. The first water collection chamber, the second water collection chamber and the third water collection chamber are connected to the multi-stage treatment mechanism through a water supply pipe system.

[0014] Furthermore, the desilting mechanism includes a horizontal desilting kettle, in which a filter tube is coaxially arranged, one end of the filter tube is connected to a transfer tube, and the transfer tube rotates to extend out of one axial end of the horizontal desilting kettle, a transmission wheel is installed on the transfer tube, and a silt guide blade extending spirally along its axis is constructed on the filter tube, and a discharge joint and a silt inlet pipe are constructed on the horizontal desilting kettle, and the silt inlet pipe is connected to the silt discharge pipe.

[0015] Because the present invention adopts the above-mentioned structure, the technical progress achieved compared to the prior art is that rainwater enters the multi-stage treatment mechanism through the rainwater inlet mechanism, undergoes multi-stage treatment by the multi-stage treatment mechanism, and is divided into different purification levels and stored separately in the graded water collection mechanism. The primary purified rainwater can be used for irrigation operations in municipal infrastructure, as well as for road cleaning and cooling. The secondary purified rainwater can be used for vehicle cleaning and groundwater recharge. The tertiary purified rainwater can be used for cooling, boilers, and other applications that do not require high water quality. Moreover, in the event of floods, a large amount of rainwater can be stored in the graded water collection mechanism for emergency water storage to prevent excessive rainfall from flooding low-lying areas. During droughts, a certain amount of water can be stored in the graded water collection mechanism to provide water reserves for vegetation irrigation, road cleaning, etc., thereby reducing the cost of water transportation. During the process of rainwater passing through the multi-stage treatment mechanism, silt, sand and gravel and other impurities in the rainwater will accumulate in the predetermined area of ​​the multi-stage treatment mechanism and easily form a sludge bed. Flushing water is pumped into the sludge bed through the silt discharge pipe system, so that the silt bed becomes flowable. Then, the silt pump is adapted to pump the silt into the silt removal mechanism for mud and water separation. In this way, there is no need to frequently enter the multi-stage treatment mechanism to clean the sediment and clean various parts, which reduces the cost of maintenance and management. Moreover, the obtained sludge can be collected and fermented, etc., and used as soil for planting green plants. The equipment used in the present invention is relatively simple, and does not require a more complex piping system and purification system, super purification system, etc., which reduces the initial investment cost and has excellent operational stability. In summary, the present invention can perform graded treatment of rainwater according to different needs, avoids the long-term storage of rainwater, which leads to the deterioration of water quality, and makes full use of the collected rainwater; and reduces the initial investment cost, regular silt discharge and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0017] In the attached figure:

[0018] Figure 1 Schematic diagram of the structure of an embodiment of the present invention;

[0019] Figure 2 This is a structural diagram of a rainwater inlet mechanism according to an embodiment of the present invention;

[0020] Figure 3 This is a structural schematic diagram of the rainwater introduction mechanism according to an embodiment of the present invention from another angle;

[0021] Figure 4 This is an axial structural cross-sectional view of a rainwater inlet mechanism according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of a multi-stage processing mechanism according to an embodiment of the present invention;

[0023] Figure 6 This is an axial structural cross-sectional view of a multi-stage processing mechanism according to an embodiment of the present invention;

[0024] Figure 7 for Figure 5 A magnified view of the structure of part A in the middle;

[0025] Figure 8 for Figure 5 A magnified view of the structure of part B in the middle;

[0026] Figure 9 This is a schematic structural diagram of an opening and closing unit in a multi-stage processing mechanism according to an embodiment of the present invention;

[0027] Figure 10 A partial structural cross-sectional view of a multi-stage processing mechanism according to an embodiment of the present invention;

[0028] Figure 11 This is a schematic structural diagram of a fixed cylinder in an opening and closing unit according to an embodiment of the present invention;

[0029] Figure 12 This is a schematic structural diagram of the connection between the movable cylinder and the floating ring in the opening and closing unit according to an embodiment of the present invention;

[0030] Figure 13 This is a schematic structural diagram of a silt removal mechanism according to an embodiment of the present invention;

[0031] Figure 14 This is an axial structural cross-sectional view of the desilting mechanism according to an embodiment of the present invention;

[0032] Figure 15 This is a structural diagram of the water delivery pipe system connected to the graded water collection mechanism according to an embodiment of the present invention.

[0033] Labeled parts: 100-rainwater inlet mechanism, 101-base body, 102-connecting edge, 103-connecting strip, 104-center seat, 105-vertical assembly pipe, 106-connecting spring, 107-spring seat, 108-cover-shaped body, 109-annular groove, 110-transition edge, 111-water inlet, 112-limiting edge, 113-water guide channel, 114-connecting screw, 200-multi-stage treatment mechanism, 201-multi-stage treatment kettle, 202-primary treatment Chamber, 203-first sedimentation zone, 204-secondary treatment chamber, 205-second sedimentation zone, 206-tertiary treatment chamber, 207-third sedimentation zone, 208-opening and closing unit, 2081-fixed cylinder, 2082-first spiral port, 2083-movable cylinder, 2084-second spiral port, 2085-fixed edge, 2086-floating ring, 209-filter cover, 210-first conduction channel, 211-first oblique flow port, 212-second conduction channel, 213-second Oblique flow outlet, 214-third oblique flow outlet, 300-water delivery pipe system, 301-water delivery pump, 302-water inlet main pipe, 303-first water inlet branch pipe, 304-second water inlet branch pipe, 305-third water inlet branch pipe, 306-first control valve, 307-second control valve, 308-third control valve, 309-water outlet main pipe, 310-first water outlet branch pipe, 311-second water outlet branch pipe, 312-third water outlet branch pipe, 400-graded water collection mechanism, 401-water collection tank, 4 02-first water collection chamber, 403-second water collection chamber, 404-third water collection chamber, 500-drainage pipe system, 501-drainage main pipe, 502-first silt discharge branch pipe, 503-second silt discharge branch pipe, 504-first annular sleeve, 505-second annular sleeve, 600-desilting mechanism, 601-horizontal desilting kettle, 602-desilting chamber, 603-silt inlet pipe, 604-discharge joint, 605-transfer pipe, 606-transmission wheel, 607-filter pipe, 608-silt guide blade. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0035] The present invention discloses a rainwater collection and classification treatment water resource utilization device, such as Figure 1-15As shown, the multi-stage treatment mechanism 200 includes a multi-stage treatment mechanism 200, a graded water collection mechanism 400, a silt removal mechanism 600, a water delivery pipe system 300, and a silt removal pipe system 500. The multi-stage treatment mechanism 200 is buried in a depression. Since rainwater tends to accumulate in the depression, this allows rainwater to flow smoothly into the multi-stage treatment mechanism 200. At least one rainwater inlet mechanism 100 is mounted on the upper end of the multi-stage treatment mechanism 200, and each rainwater inlet mechanism 100 is connected to the multi-stage treatment mechanism 200. The multi-stage treatment mechanism 200 is connected to the graded water collection mechanism 400 via the water delivery pipe system 300, and the multi-stage treatment mechanism 200 is connected to the silt removal mechanism 600 via the silt removal pipe system 500. The working principle and advantages of the present invention are as follows: rainwater enters the multi-stage treatment mechanism 200 through the rainwater inlet mechanism 100, undergoes multi-stage treatment by the multi-stage treatment mechanism 200, and is divided into different purification levels, which are then stored in the graded water collection mechanism 400. Primary-level purified rainwater can be used for irrigation of municipal infrastructure, road cleaning, and cooling. Secondary-level purified rainwater can be used for vehicle cleaning and groundwater recharge. Tertiary-level purified rainwater can be used for cooling, boilers, and other applications requiring less stringent water quality. Furthermore, during floods, large quantities of rainwater can be stored in the graded water collection mechanism 400 for emergency water storage to prevent flooding of low-lying areas due to excessive rainfall. During droughts, a certain amount of water can be stored in the graded water collection mechanism 400 to provide a water reserve for vegetation irrigation, road cleaning, and other purposes, thereby reducing the cost of water transportation. In the process of rainwater passing through the multi-stage treatment mechanism 200, silt, sand and gravel and other impurities in the rainwater will accumulate in the predetermined area of ​​the multi-stage treatment mechanism 200, and easily form a silt bed. The flushing water is pumped into the silt bed through the silt discharge pipe system 500, so that the silt bed becomes a flowable form, and then the silt extraction pump is adapted to pump the silt into the silt removal mechanism 600 for mud and water separation. In this way, there is no need to frequently enter the multi-stage treatment mechanism 200 to clean the sediment and clean various parts, thereby reducing the cost of maintenance and management. Moreover, the obtained silt can be collected and fermented, etc., and used as vegetation soil for planting green plants. The equipment used in the present invention is relatively simple, and does not require a more complicated piping system, purification system, ultra-purification system, etc., which reduces the initial investment cost and has excellent operational stability. In summary, the present invention can perform graded treatment of rainwater according to different needs, avoiding the long-term storage of rainwater, which may lead to deterioration of water quality, and making full use of the collected rainwater; and reducing the initial investment cost, regular silt removal and maintenance costs.

[0036] As a preferred embodiment of the present invention, Figure 2-4As shown, the rainwater inlet mechanism 100 includes a water guide base and an anti-falling protective cover. The water guide base is detachably connected to the upper end of the multi-stage treatment mechanism 200, and the anti-falling protective cover is elastically connected to the upper end of the water guide base. The upper end surface of the anti-falling protective cover is flush with the ground surface, and a water guide channel 113 is formed between the water guide base and the anti-falling protective cover. The water guide base of this embodiment includes a base body 101 and a center seat 104. A connecting edge 102 is formed at the outer edge of the base body 101. The upper end of the connecting edge 102 is detachably connected to the upper end of the multi-stage treatment mechanism 200. The center seat 104 is arranged at the center of the base body 101. The center seat 104 is connected to the base body 101 by a plurality of connecting strips 103. These connecting strips 103 are evenly arranged around the center seat 104, and a water guide port is formed between two adjacent connecting strips 103. The anti-falling protective cover of this embodiment includes a cover-like body 108, the middle part of which is raised upward, and a plurality of annular grooves 109 are provided on the upper end surface of the cover-like body 108. These annular grooves 109 are coaxially arranged and spaced from the center of the cover-like body 108 to its outer edge. A transition edge 110 is constructed at the outer edge of the cover-like body 108 and at the upper end of the connecting edge 102. A sleeve-shaped limiting edge 112 extending downward is constructed at the lower end of the connection between the transition edge 110 and the cover-like body 108. When the outer edge of the transition edge 110 contacts the outer edge of the connecting edge 102, the lower end of the limiting edge 112 has a certain gap with the upper end of the base body 101. The above-mentioned water guide channel 113 is formed between the transition edge 110, the connecting edge 102 and the limiting edge 112. A plurality of water inlets 111 are evenly provided on the transition edge 110 along its circumference, and each water inlet 111 is connected to the water guide channel 113. During the rainwater collection process of this embodiment, the rainwater sequentially passes through the water inlet 111, the water channel 113, and the water outlet, ultimately entering the multi-stage treatment mechanism 200. In this embodiment, a vertical assembly tube 105 is constructed on the upper end surface of the center seat 104. A connecting spring 106 is disposed within the vertical assembly tube 105. The lower end of the connecting spring 106 is fixedly connected to the center seat 104, and the upper end of the connecting spring 106 is fixedly connected to a spring seat 107. The lower end of a connecting screw 114 passes through the center of the anti-fall protective cover, and the lower end of the connecting screw 114 is threadedly connected to the spring seat 107. The connecting screw 114 is rotatably connected to the anti-fall protective cover. The working principle and advantages of this embodiment are: rainwater enters the multi-stage treatment mechanism 200 through the water guide channel 113. When the rainwater falls on the anti-fall protective cover, due to the restriction of the annular groove 109, most of the impurities in the rainwater are intercepted by the annular groove 109, unless the rainwater flowing through the anti-fall protective cover is too large, which reduces the interception effect of the annular groove 109.When a vehicle or other vehicle passes through the anti-falling cover, the anti-falling cover moves downward, causing the anti-falling cover to drive the connecting spring 106 to contract downward. At the limit, the outer edge of the transition edge 110 and the outer edge of the connecting edge 102 abut against each other. At this time, the water inlet 111 and the water guide channel 113 remain connected, thereby not affecting the collection of rainwater. After the vehicle leaves, the anti-falling cover returns to its original position under the action of the connecting spring 106. In this way, rainwater enters not only from the water inlet 111, but also from the gap between the transition edge 110 and the connecting edge 102.

[0037] As a preferred embodiment of the present invention, Figure 6As shown, the multi-stage treatment mechanism 200 includes a multi-stage treatment vessel 201, a filter cover 209, and an opening and closing unit 208. The multi-stage treatment vessel 201 is buried below the ground. A primary treatment chamber 202 is formed above the multi-stage treatment vessel 201, and a secondary treatment chamber 204 is formed below the primary treatment chamber 202. The filter cover 209 is positioned between the primary treatment chamber 202 and the secondary treatment chamber 204. The axis of the filter cover 209 coincides with the axis of the multi-stage treatment vessel 201. The small-diameter end of the filter cover 209 faces upward, allowing rainwater entering the primary treatment chamber 202 to pass through the filter cover 209 and into the secondary treatment chamber 204. Furthermore, because the small-diameter end of the filter cover 209 faces upward, impurities are less likely to remain on the filter cover 209 under the scouring of rainwater, thereby extending the cleaning cycle of the filter cover 209. In this embodiment, the opening and closing unit 208 is connected to the upper end of the filter housing 209. The opening and closing unit 208 is used to open and close the upper end of the filter housing 209, thereby opening and closing the upper end of the filter housing 209 and, in turn, opening and closing the primary treatment chamber 202 and the secondary treatment chamber 204 located at the upper end of the filter housing 209. In this embodiment, a tertiary treatment chamber 206 is connected to the secondary treatment chamber 204. The primary treatment chamber 202, the secondary treatment chamber 204, and the tertiary treatment chamber 206 are all connected to the water supply system 300. The operating principle and advantages of this embodiment are as follows: When rainwater enters the primary treatment chamber 202, some of it falls on the filter housing 209 and is directly filtered by the filter housing 209 before entering the secondary treatment chamber 204. The remaining rainwater accumulates in the lower portion of the primary treatment chamber 202. As the water level rises, the rainwater gradually submerges the filter housing 209, allowing the rainwater to enter the secondary treatment chamber 204 through the filter housing 209. Rainwater accumulated in the secondary treatment chamber 204 is gradually filtered and enters the tertiary treatment chamber 206. When there is too much rainwater, the primary treatment chamber 202, the secondary treatment chamber 204, and the tertiary treatment chamber 206 are all fully loaded. The rainwater in the primary treatment chamber 202, the secondary treatment chamber 204, and the tertiary treatment chamber 206 can be transported to the graded water collection mechanism 400 for independent storage via the water delivery pipe system 300. Alternatively, regardless of the amount of rainwater, the rainwater in the tertiary treatment chamber 206 can be transported to the graded water collection mechanism 400 via the water delivery pipe system 300. In this case, the rainwater in the primary treatment chamber 202 and the secondary treatment chamber 204 enters the tertiary treatment chamber 206 step by step, that is, the rainwater is treated step by step before entering the graded water collection mechanism 400. It can be seen that the rainwater achieves the purpose of multi-stage filtration treatment in the process of passing through the primary treatment chamber 202, the secondary treatment chamber 204 and the tertiary treatment chamber 206, and the rainwater in different chambers can be extracted according to demand.

[0038] As a preferred embodiment of the present invention, Figure 9 、 11As shown in Figures 12 and 13 , the opening and closing unit 208 comprises a fixed cylinder 2081, a movable cylinder 2083, and a floating ring 2086, with their axes coinciding. The lower end of the fixed cylinder 2081 is coaxially mounted on the small-diameter end of the filter housing 209. The movable cylinder 2083 is mounted outside the fixed cylinder 2081 and is vertically movable outside the fixed cylinder 2081. The upper end of the movable cylinder 2083 is in a sealed position. The lower end of the movable cylinder 2083 extends below the fixed cylinder 2081. A fixed edge 2085 is formed at the lower end of the movable cylinder 2083, which is detachably connected to the upper end of the floating ring 2086. In this embodiment, a first spiral opening 2082 is formed on the wall of the fixed cylinder 2081, and the first spiral opening 2082 extends along the axis of the fixed cylinder 2081 in a threaded manner. A second spiral opening 2084 is formed on the wall of the movable cylinder 2083, and the second spiral opening 2084 extends along the axis of the movable cylinder 2083 in a threaded manner. When the first spiral opening 2082 and the second spiral opening 2084 partially or completely overlap, the opening and closing unit 208 connects the primary processing chamber 202 and the secondary processing chamber 204. When the first spiral opening 2082 and the second spiral opening 2084 are completely offset, the opening and closing unit 208 separates the primary processing chamber 202 from the secondary processing chamber 204. Specifically, when rainfall is heavy and rainwater cannot be quickly transported from the primary treatment chamber 202 to the secondary treatment chamber 204, the liquid level of the rainwater in the primary treatment chamber 202 gradually rises. As the liquid level rises, it contacts the floating ring 2086, generating buoyancy that acts on the floating ring 2086, causing the floating ring 2086 to drive the movable cylinder 2083 upward in the vertical direction. This causes the first spiral opening 2082 and the second spiral opening 2084 to partially or completely overlap, allowing some rainwater to enter the secondary treatment chamber 204 through the opening and closing unit 208, thereby relieving the pressure of the filter cover 209 and facilitating the rapid passage of rainwater through the primary treatment chamber 202. To prevent larger impurities (such as leaves and plastic waste) from entering the secondary treatment chamber 204, this embodiment employs filters installed at the first spiral opening 2082 and the second spiral opening 2084. When the liquid level of rainwater in the primary treatment chamber 202 drops to a position below the upper end of the filter cover 209, under the action of weight, the floating ring 2086 and the movable cylinder 2083 gradually fall back to their positions, so that the first spiral opening 2082 and the second spiral opening 2084 are completely staggered. At this time, only the filter cover 209 plays the water filtering function.

[0039] As a preferred embodiment of the present invention, Figure 6-10As shown, a first settling zone 203 is constructed at the lower end of the primary treatment chamber 202, a second settling zone 205 is constructed at the lower end of the secondary treatment chamber 204, and a third settling zone 207 is constructed at the lower end of the tertiary treatment chamber 206. A first annular sleeve 504 and a second annular sleeve 505 are sheathed around the periphery of the multi-stage treatment kettle 201. A plurality of first oblique flow ports 211 are formed along the circumference of the lower end of the first settling zone 203. A first conducting channel 210 is constructed at the lower end of the first settling zone 203. The first conducting channel 210 is connected to each of the first oblique flow ports 211, and the first conducting channel 210 is connected to the first annular sleeve 504, which is in turn connected to the sludge drainage pipe system 500. A plurality of second oblique flow openings 213 are opened along the circumference of the lower end of the second sedimentation zone 205, and a plurality of third oblique flow openings 214 are opened along the circumference of the lower end of the third sedimentation zone 207. A second conducting channel 212 is constructed at the lower end of the second sedimentation zone 205, and the second conducting channel 212 extends to the lower end of the third sedimentation zone 207. Each second oblique flow opening 213 and each third oblique flow opening 214 are connected to the second conducting channel, and the second conducting channel 212 is connected to the second annular sleeve 505, and the second annular sleeve 505 is connected to the silt discharge pipe system 500. The working principle and advantages of this embodiment are: the sludge in the primary treatment chamber 202 is deposited in the first sedimentation area 203, the sludge in the secondary treatment chamber 204 is deposited in the second sedimentation area 205, and the sludge in the tertiary treatment chamber 206 is deposited in the third sedimentation area 207. The sludge in the first sedimentation area 203, the second sedimentation area 205 and the third sedimentation area 207 are extracted through the silt discharge pipe system 500. When excessive silt is deposited and forms a sludge bed, it cannot be sucked out by the silt discharge pipe system 500. At this time, high-pressure water is pumped into the first conducting channel 210 and the second conducting channel 212 through the silt discharge pipe system 500. In this way, the high-pressure water enters the first sedimentation area 203 through the multiple first oblique flow ports 211 and generates a vortex, thereby disturbing the sludge bed in the first sedimentation area 203 without dead angles, making the silt in the sludge bed loose and thin; similarly, the high-pressure water enters the second sedimentation area 205 through the multiple second oblique flow ports 213, and the high-pressure water enters the third sedimentation area 207 through the multiple third oblique flow ports 214, thereby loosening and thinning the silt in the corresponding sludge beds. Then, the silt in the first sedimentation area 203, the second sedimentation area 205 and the third sedimentation area 207 are extracted through the silt discharge pipe system 500. Moreover, during the extraction process, a vortex is also generated, thereby increasing the extraction rate and the extraction effect, so that the sludge is extracted quickly and fully.

[0040] As a preferred embodiment of the present invention, Figure 15As shown, the hierarchical water collection mechanism 400 includes a water collection tank 401 having a first water collection chamber 402, a second water collection chamber 403, and a third water collection chamber 404, which are independent of each other. The first water collection chamber 402, the second water collection chamber 403, and the third water collection chamber 404 are connected to the multi-stage treatment mechanism 200 via the water delivery pipe system 300. The first water collection chamber 402 is mainly used to store rainwater in the primary treatment chamber 202, the second water collection chamber 403 is mainly used to store rainwater in the secondary treatment chamber 204, and the third water collection chamber 404 is mainly used to store rainwater in the tertiary treatment chamber 206.

[0041] As a preferred embodiment of the present invention, Figure 5 、 15 As shown, the water delivery pipe system 300 includes a delivery pump. The inlet end of the water delivery pump 301 is connected to the water inlet main pipe 302, and the outlet end of the water delivery pump 301 is connected to the water outlet main pipe 309. The first water inlet branch pipe 303, the second water inlet branch pipe 304 and the third water inlet branch pipe 305 are connected to the water inlet main pipe 302. A first control valve 306 is installed on the first water inlet branch pipe 303, a second control valve 307 is installed on the second water inlet branch pipe 304, and a third control valve 308 is installed on the third water inlet branch pipe 305. The first water inlet branch pipe 303 is connected to the primary treatment chamber 202, the third water inlet branch pipe 305 is connected to the secondary treatment chamber 204, and the second water inlet branch pipe 304 is connected to the tertiary treatment chamber 206. The main water outlet pipe 309 is connected to a first water outlet branch pipe 310, a second water outlet branch pipe 311, and a third water outlet branch pipe 312. The first water outlet branch pipe 310 is connected to the first water collection chamber 402, the second water outlet branch pipe 311 is connected to the second water collection chamber 403, and the third water outlet branch pipe 312 is connected to the third water collection chamber 404. Valves are installed on the first water outlet branch pipe 310, the second water outlet branch pipe 311, and the third water outlet branch pipe 312. These valves, along with the first control valve 306, the second control valve 307, and the third control valve 308, are all solenoid valves.

[0042] As a preferred embodiment of the present invention, Figure 5 、 7 As shown in Figures 8 and 8, the silt discharge pipe system 500 includes a silt discharge main pipe 501, and a first silt discharge branch pipe 502 and a second silt discharge branch pipe 503 are connected to the silt discharge main pipe 501. The first silt discharge branch pipe 502 is connected to the first annular sleeve 504, and the second silt discharge branch pipe 503 is connected to the second annular sleeve 505. The silt discharge main pipe 501 is connected to the inlet end of the silt removal mechanism 600, and the drainage end of the silt removal mechanism 600 is connected to the inlet end of the silt extraction pump.

[0043] As a preferred embodiment of the present invention, Figure 13 、 14As shown, the desilting mechanism 600 includes a horizontal desilting kettle 601, which has a desilting chamber 602 formed therein. A filter tube 607 is coaxially disposed within the horizontal desilting kettle 601. One end of the filter tube 607 is connected to a transfer tube 605, which rotates and extends out of one axial end of the horizontal desilting kettle 601. A transmission wheel 606 is mounted on the transfer tube 605. A silt guide blade 608 is configured on the filter tube 607, extending helically along the axis of the filter tube 607. The horizontal desilting kettle 601 is provided with a discharge connector 604 and a silt inlet pipe 603. The silt inlet pipe 603 is connected to the main silt discharge pipe 501 of the silt discharge piping system 500. The discharge connector 604 is used to discharge sludge from the desilting chamber 602. The transfer tube 605 is connected to the inlet of a silt extraction pump. The working principle and advantages of this embodiment are as follows: this embodiment controls the action of the silt extraction pump and drives the transmission wheel 606 to rotate to drive the transfer pipe 605 to rotate. In this way, the transfer pipe 605 drives the silt guide blade 608 to rotate through the filter tube 607, and the sludge in the multi-stage treatment kettle 201 enters the silt removal chamber 602 through the silt discharge main pipe 501. The moisture in the sludge is discharged by the silt extraction pump through the filter tube 607, and the solid impurities in the sludge are isolated in the silt removal chamber 602 and are gradually discharged through the discharge joint 604 under the action of the rotating silt guide blade 608, thereby achieving the purpose of solid-liquid separation. Finally, the solid impurities and liquid are treated separately.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A rainwater collection and classification treatment water resource utilization device, characterized by: The invention comprises a multi-stage treatment mechanism buried in a depression, at least one rainwater introduction mechanism is installed at the upper end of the multi-stage treatment mechanism, the rainwater introduction mechanism is connected to the multi-stage treatment mechanism, the multi-stage treatment mechanism is connected to the graded water collection mechanism through a water delivery pipe system, and the multi-stage treatment mechanism is connected to the silt removal mechanism through a silt discharge pipe system; the multi-stage treatment mechanism comprises a multi-stage treatment kettle buried below the ground, a primary treatment chamber is formed at the upper part of the multi-stage treatment kettle, a secondary treatment chamber is formed below the primary treatment chamber, and a silt discharge pipe is provided between the primary treatment chamber and the secondary treatment chamber. A filter cover is provided, an opening and closing unit is connected to the filter cover, a tertiary treatment chamber is connected to the outside of the secondary treatment chamber, and the primary treatment chamber, the secondary treatment chamber and the tertiary treatment chamber are all connected to the water supply pipe system; the opening and closing unit includes a fixed cylinder coaxially installed on the small-diameter end of the filter cover, a movable cylinder that can move vertically is set outside the fixed cylinder, a floating ring is detachably connected to the lower end of the movable cylinder, a first spiral opening extending along the axis of the fixed cylinder is provided on the cylinder wall, and a second spiral opening extending along the axis of the movable cylinder is provided on the cylinder wall.

2. The rainwater collection and classification treatment water resource utilization device according to claim 1 is characterized by: The rainwater introduction mechanism includes a water guide base detachably connected to the upper end of the multi-stage treatment mechanism, an anti-falling protective cover is elastically connected to the upper end of the water guide base, and a water guide channel is formed between the water guide base and the anti-falling protective cover.

3. The rainwater collection and classification treatment water resource utilization device according to claim 2 is characterized by: The water guide base includes a base body that is detachably connected to the upper end of the multi-stage treatment mechanism through a connecting edge, and a center seat is provided at the center of the base body. The center seat and the base body are connected by multiple connecting strips, and water guide ports are formed between adjacent connecting strips.

4. The rainwater collection and classification treatment water resource utilization device according to claim 3 is characterized by: The anti-fall protective cover includes a cover-shaped body with an upwardly protruding middle part, a plurality of concentrically arranged annular grooves are opened on the upper end surface of the cover-shaped body, a transition edge is constructed at the outer edge of the cover-shaped body and at the upper end of the connecting edge, and a plurality of water inlets are evenly opened along the circumference of the transition edge, and each of the water inlets is connected to the water guide channel.

5. The rainwater collection and classification treatment water resource utilization device according to claim 3 is characterized by: A vertical assembly tube is constructed on the center seat, and a connecting spring is arranged in the vertical assembly tube. The lower end of the connecting spring is fixed to the center seat, and the upper end of the connecting spring is fixed to a spring seat. The lower end of a connecting screw passes through the center of the anti-fall protective cover and is threadedly connected to the spring seat.

6. The rainwater collection and classification treatment water resource utilization device according to claim 1 is characterized by: When the first spiral opening and the second spiral opening partially overlap or completely overlap, the opening and closing unit connects the primary processing chamber and the secondary processing chamber; when the first spiral opening and the second spiral opening are completely offset, the opening and closing unit separates the primary processing chamber and the secondary processing chamber.

7. The rainwater collection and classification treatment water resource utilization device according to claim 1 is characterized by: A first sedimentation zone is constructed at the lower end of the primary treatment chamber, a second sedimentation zone is constructed at the lower end of the secondary treatment chamber, and a third sedimentation zone is constructed at the lower end of the tertiary treatment chamber. A first annular sleeve and a second annular sleeve are mounted on the outer periphery of the multi-stage treatment kettle. A plurality of first oblique flow ports are opened along the circumference of the first sedimentation zone at the lower end, and these first oblique flow ports are connected to the silt discharge pipe system through the first annular sleeve. A plurality of second oblique flow ports are opened along the circumference of the second sedimentation zone, and a plurality of third oblique flow ports are opened along the circumference of the third sedimentation zone. The second oblique flow ports and the third oblique flow ports are connected to the silt discharge pipe system through the second annular sleeve.

8. The rainwater collection and classification treatment water resource utilization device according to claim 1 is characterized by: The graded water collection mechanism includes a water collection pool, which has a first water collection chamber, a second water collection chamber and a third water collection chamber that are independent of each other. The first water collection chamber, the second water collection chamber and the third water collection chamber are connected to the multi-stage treatment mechanism through a water pipe system.

9. The rainwater collection and classification treatment water resource utilization device according to claim 1, characterized in that: The desilting mechanism includes a horizontal desilting kettle, in which a filter tube is coaxially arranged. One end of the filter tube is connected to a transfer tube, and the transfer tube rotates to extend out of one axial end of the horizontal desilting kettle. A transmission wheel is installed on the transfer tube, and a silt guide blade extending spirally along its axis is constructed on the filter tube. A discharge joint and a silt inlet pipe are constructed on the horizontal desilting kettle, and the silt inlet pipe is connected to the silt discharge pipe.

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