Rainwater purification box

Abstract

The invention relates to the technical field of rainwater purification tanks, in particular to a rainwater purification tank. According to the technical scheme, the rainwater purification box comprises an A-type rainwater purification assembly and a B-type rainwater purification assembly, and further comprises a photovoltaic panel, a solar energy storage box and an air pump; a solar energy storage box and a B-type rainwater purification assembly are arranged on the two sides of the A-type rainwater purification assembly respectively. Through combination of the A-type rainwater purification assembly and the B-type rainwater purification assembly, rainwater is purified by the A-type rainwater purification assembly and then utilized by the vegetation layer of the flower box, and overflowed primarily purified water is discharged into the B-type rainwater purification assembly to be further fully purified, so that reutilization of the rainwater is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of rainwater purification boxes, and in particular relates to rainwater purification boxes. Background Art

[0002] With the acceleration of global urbanization, the water needed for urban greening is facing a serious shortage. As a renewable natural resource, the collection and utilization of rainwater is particularly important. Rainwater collection flower boxes are equipped with a collection system on the flower boxes to introduce rainwater into the flower boxes for storage and utilization, which not only solves the problem of water accumulation in the flower boxes, but also provides a reliable water source for urban greening.

[0003] However, the existing water purification devices for residential flower boxes have relatively small water purification capacity and low efficiency, resulting in unsatisfactory water purification effects in heavy rain environments. When the rainfall is heavy, rainwater is likely to accumulate in the flower boxes or even overflow, which may not only cause soil erosion but also pollute the surrounding environment.

[0004] Therefore, in view of the above-mentioned existing residential flower box water purification device, because of its small water purification volume and low efficiency, the flower box water purification has poor water purification effect in heavy rain environment and rainwater easily overflows to cause soil erosion and pollution, a rainwater purification box can be designed. Summary of the invention

[0005] In order to overcome the problem that the existing residential flower box water purification device has a small water purification volume and low efficiency, the flower box water purification device has poor water purification effect in a heavy rain environment and rainwater easily overflows, causing soil erosion and pollution.

[0006] The technical scheme of the present invention is: a rainwater purification box, including a type A rainwater purification component, a type B rainwater purification component, and also including a photovoltaic panel, a solar energy storage box, and an air pump; a solar energy storage box and a type B rainwater purification component are respectively arranged on both sides of the type A rainwater purification component; the type A rainwater purification component includes a type A rainwater purification box, a polyester fluidized bin suspension ball, a permeable limit plate, an annular water distributor, a mixing bin, an air collection and separation cover, a bubble releaser, an type A box collecting bucket, a fiberglass grille plate, a pebble buffer layer, a filter layer, a fixed plate, a water purification layer, and a flower box vegetation layer.

[0007] Preferably, by combining a type A rainwater purification component with a type B rainwater purification component, the rainwater is purified by the type A rainwater purification component and then utilized by the flower box vegetation layer, while the overflowing primary purified water is discharged into the type B rainwater purification component for further sufficient purification to facilitate the reuse of rainwater, thereby solving the problem of existing residential flower box water purification devices, which have small water purification volume and low efficiency, resulting in poor water purification effect of flower box water purification devices in heavy rain environments and easy overflow of rainwater to cause soil erosion and pollution.

[0008] Preferably, an air pump is provided inside the solar energy storage box, and the solar energy storage box is connected to the air pump for power supply; a photovoltaic panel is provided on one side of the solar energy storage box, and the photovoltaic panel is connected to the solar energy storage box for power supply, and the solar energy storage box has a built-in electric controller, inverter, and battery.

[0009] Preferably, a polyester fluidized bin suspension ball is arranged at the inner center of the Type A rainwater purification box, and the polyester fluidized bin suspension ball is surrounded by a closed space; permeable limit plates are arranged at both the upper and lower ends of the polyester fluidized bin suspension ball; an annular water distributor is arranged above the permeable limit plate at the upper end, and the annular water distributor is fixedly connected to the inner wall of the Type A rainwater purification box, and the annular water distributor is connected to the external rainwater drainage pipeline.

[0010] Preferably, a mixing bin is provided below the permeable limit plate at the lower end, and the mixing bin is provided inside the A-type rainwater purification box; an air collecting and separation hood is provided inside the mixing bin, and the upper port of the air collecting and separation hood is fixedly connected to the bottom of the permeable limit plate at the lower end.

[0011] Preferably, a bubble releaser is provided below the gas collecting and separating hood, and the air input end of the bubble releaser is connected to the output end pipeline of the air pump; A-type box collecting hoppers are provided at the four corners below the inner wall of the mixing bin, and the A-type box collecting hopper is integrally formed with the mixing bin.

[0012] Preferably, fiberglass grating plates are provided on both sides of the permeable limit plate at the lower end, and the fiberglass grating plates are fixedly connected to the inner wall of the A-type rainwater purification box, and two fiberglass grating plates are provided; a pebble buffer layer is provided at the upper end of each fiberglass grating plate; a filter layer is provided at the upper end of the pebble buffer layer; a fixed plate is provided at the upper end of the filter layer, and the fixed plate is made of a porous and permeable material.

[0013] Preferably, a water purification layer is arranged at the upper end of the fixed plate; a flower box vegetation layer is arranged at the upper end of the water purification layer; and a water level sensor and an electric-controlled drain valve are arranged on the inner wall of the flower box vegetation layer.

[0014] Preferably, the B-type rainwater purification component includes a B-type rainwater purification box, a B-type box water inlet pipe, a B-type box drainage pipe, a polypropylene separation layer, a water guide groove, an activated carbon adsorption layer, a sealing plate, a B-type box collecting bucket, and a sludge discharge valve; the B-type rainwater purification box is provided with a B-type box water inlet pipe and a B-type box drainage pipe at both ends of the outer wall, and the horizontal height of the B-type box water inlet pipe is lower than that of the B-type box drainage pipe, and the B-type box water inlet pipe is connected to the electric control drainage valve pipeline on the inner wall of the vegetation layer of the flower box; a polypropylene separation layer is provided inside the B-type rainwater purification box, and the polypropylene separation layer is provided close to one side of the B-type box water inlet pipe, and the horizontal height of the lower end edge of the polypropylene separation layer is higher than that of the B-type box water inlet pipe; an activated carbon adsorption layer is provided on one side of the polypropylene separation layer, and the activated carbon adsorption layer is provided close to one side of the B-type box drainage pipe, and the upper end surface horizontal height of the activated carbon adsorption layer is consistent with the polypropylene separation layer and both are lower than the B-type box drainage pipe, and the lower end surface horizontal height of the activated carbon adsorption layer is higher than the lower end surface of the polypropylene separation layer.

[0015] Preferably, a water guide groove is arranged between the polypropylene separation layer and the activated carbon adsorption layer, and the water guide groove separates the polypropylene separation layer and the activated carbon adsorption layer, and the water inlet end of the water guide groove is arranged close to the upper side of the polypropylene separation layer, and the water outlet end of the water guide groove is arranged close to the inner lower side of the activated carbon adsorption layer, and the interior between the water inlet end and the water outlet end of the water guide groove is a connected hollow water channel.

[0016] Preferably, the lower end surfaces of the polypropylene separation layer and the activated carbon adsorption layer are both provided with sealing plates, and the sealing plates are sealed and fixedly connected to the inner wall of the Type B rainwater purification box, and the sealing plates are waterproof; the lower end inner walls of the two sealing plates are both provided with Type B box collecting buckets; and a sludge discharge valve is provided between the Type B box collecting buckets.

[0017] Beneficial effects of the present invention:

[0018] 1. The existing residential flower box water purification device has a small water purification volume and low efficiency, which results in poor water purification effect in heavy rain environment and rainwater easily overflows to cause soil erosion and pollution. By combining the A-type rainwater purification component with the B-type rainwater purification component, the rainwater is purified by the A-type rainwater purification component and then used by the flower box vegetation layer, and the overflowed primary purified water is discharged into the B-type rainwater purification component for further purification to facilitate the reuse of rainwater. This solves the problem that the existing residential flower box water purification device has a small water purification volume and low efficiency, which results in poor water purification effect in heavy rain environment and rainwater easily overflows to cause soil erosion and pollution.

[0019] 2. Through the setting of A-type rainwater purification components, rainwater is discharged into the polyester fluidized bin suspension balls through the drainage pipe along the annular water distributor, and the gaps between the polyester fluidized bin suspension balls are used to separate large impurities and water in rainwater. When water is filtered by the polyester fluidized bin suspension balls and enters the mixing bin, at the same time, the solar energy storage box uses the electricity collected by the photovoltaic panel to drive the air pump, so that the air pump pumps a large number of bubbles into the bubble releaser. The generation and rising action of the bubbles make them fully mix the water and impurities inside the mixing bin, and the rising bubbles are collected by the gas collection and separation hood and discharged upward along the gaps between the polyester fluidized bin suspension balls. As the water level in the mixing bin rises, it passes through the fiberglass grating plate and goes upward through the pebble buffer layer, filter layer, and fixed plate to further filter and purify the floating impurities and pollutants in the rainwater;

[0020] 3. Through the setting of Type B rainwater purification components, when the initial purified water level in the water purification layer exceeds the water level threshold set by the water level sensor on the inner wall of the water purification layer, the normally closed electric drain valve on the inner wall of the water purification layer is controlled to open the pipeline connecting it with the water inlet pipe of the Type B box, and the excess water enters the Type B box collection bucket from the water inlet pipe of the Type B box along the pipeline. After the initial purified water enters the polypropylene separation layer from the port on the lower side of the polypropylene separation layer for solid-liquid separation, the water above the polypropylene separation layer enters the bottom side of the activated carbon adsorption layer along the water guide groove for sufficient adsorption and filtration. Finally, the purified rainwater is discharged and collected from the drain pipe of the Type B box, which effectively improves the purification amount and purification efficiency of rainwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a schematic diagram of the overall structure of the rainwater purification box of the present invention;

[0022] Figure 2 Shown is a schematic diagram of the combined structure of the type A rainwater purification component and the type B rainwater purification component of the rainwater purification box of the present invention;

[0023] Figure 3 Shown is a schematic diagram of the internal side cross-sectional structure of the A-type rainwater purification component of the rainwater purification box of the present invention;

[0024] Figure 4 Shown is a schematic diagram of a top view of the annular water distributor of the rainwater purification box of the present invention;

[0025] Figure 5 Shown is a schematic diagram of the internal cross-sectional structure of a Type B rainwater purification component of the rainwater purification box of the present invention;

[0026] Figure 6 Shown is a schematic diagram of the polypropylene separation layer structure of the rainwater purification box of the present invention.

[0027] The markings in the attached figure are: 1. Type A rainwater purification component; 2. Type B rainwater purification component; 3. Photovoltaic panel; 4. Solar energy storage box; 5. Air pump; 101. Type A rainwater purification box; 102. Polyester fluidized bin suspension ball; 103. Permeable limit plate; 104. Ring water distributor; 105. Mixing bin; 106. Gas collection and separation cover; 107. Bubble releaser; 108. Type A box collection bucket; 109. Glass fiber reinforced plastic Grille plate; 110, pebble buffer layer; 111, filter layer; 112, fixed plate; 113, water purification layer; 114, flower box vegetation layer; 201, Type B rainwater purification box; 202, Type B box water inlet pipe; 203, Type B box drainage pipe; 204, polypropylene separation layer; 205, water guide groove; 206, activated carbon adsorption layer; 207, sealing plate; 208, Type B box collection bucket; 209, sludge discharge valve. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] See also Figure 1-6 The present invention provides an embodiment: a rainwater purification box includes an A-type rainwater purification component 1, a B-type rainwater purification component 2, and also includes a photovoltaic panel 3, a solar energy storage box 4, and an air pump 5; the A-type rainwater purification component 1 is provided with a solar energy storage box 4 and a B-type rainwater purification component 2 on both sides; the A-type rainwater purification component 1 includes an A-type rainwater purification box 101, a polyester fluidized bin suspension ball 102, a permeable limit plate 103, an annular water distributor 104, a mixing bin 105, an air collection and separation cover 106, a bubble releaser 107, an A-type box collecting bucket 108, a glass fiber reinforced plastic grating plate 109, a pebble buffer layer 110, a filter layer 111, a fixing plate 112, a water purification layer 113, and a flower box vegetation layer 114.

[0030] See also Figure 1 In this embodiment, an air pump 5 is arranged inside the solar energy storage box 4, and the solar energy storage box 4 is connected to the air pump 5 for power supply; a photovoltaic panel 3 is arranged on one side of the solar energy storage box 4, and the photovoltaic panel 3 is connected to the solar energy storage box 4 for power supply, and the solar energy storage box 4 has an electric controller, an inverter, and a battery built in.

[0031] See also Figure 1-5In this embodiment, a polyester fluidized bin suspension ball 102 is provided at the inner center of the A-type rainwater purification box 101, and the polyester fluidized bin suspension ball 102 is surrounded by a closed space; a water-permeable limit plate 103 is provided at both ends of the polyester fluidized bin suspension ball 102; an annular water distributor 104 is provided above the upper water-permeable limit plate 103, and the annular water distributor 104 is fixedly connected to the inner wall of the A-type rainwater purification box 101, and the annular water distributor 104 is connected to the external rainwater drainage pipeline; a mixing bin 105 is provided below the lower water-permeable limit plate 103, and the mixing bin 105 is provided inside the A-type rainwater purification box 101; an air collecting and separating cover 106 is provided inside the mixing bin 105, and the upper port of the air collecting and separating cover 106 is fixedly connected to the lower part of the water-permeable limit plate 103 at the lower end; a bubble releaser 107 is provided below the air collecting and separating cover 106, and the bubble releaser 1 The air input end of 07 is connected to the output end pipeline of the air pump 5; A-type box collecting buckets 108 are arranged at the four corners below the inner wall of the mixing bin 105, and the A-type box collecting bucket 108 and the mixing bin 105 are formed in one piece; both sides of the permeable limit plate 103 at the lower end are provided with glass fiber reinforced plastic grating plates 109, and the glass fiber reinforced plastic grating plates 109 are fixedly connected to the inner wall of the A-type rainwater purification box 101, and two glass fiber reinforced plastic grating plates 109 are arranged; each A pebble buffer layer 110 is provided at the upper end of each fiberglass grating plate 109; a filter layer 111 is provided at the upper end of the pebble buffer layer 110; a fixed plate 112 is provided at the upper end of the filter layer 111, and the fixed plate 112 is made of a porous water-permeable material; a water purification layer 113 is provided at the upper end of the fixed plate 112; a flower box vegetation layer 114 is provided at the upper end of the water purification layer 113; a water level sensor and an electric-controlled drain valve are provided on the inner wall of the flower box vegetation layer 114.

[0032] See also Figure 1-6In this embodiment, the B-type rainwater purification component 2 includes a B-type rainwater purification box 201, a B-type box water inlet pipe 202, a B-type box drainage pipe 203, a polypropylene separation layer 204, a water guide groove 205, an activated carbon adsorption layer 206, a sealing plate 207, a B-type box collection bucket 208, and a sludge discharge valve 209; the B-type box water inlet pipe 202 and the B-type box drainage pipe 203 are respectively arranged at both ends of the outer wall of the B-type rainwater purification box 201, and the horizontal height of the B-type box water inlet pipe 202 is lower than the B-type box drainage pipe 203, and the B The water inlet pipe 202 of the B-type box is connected to the electric control drain valve pipeline on the inner wall of the vegetation layer 114 of the flower box; a polypropylene separation layer 204 is arranged inside the B-type rainwater purification box 201, and the polypropylene separation layer 204 is arranged close to one side of the water inlet pipe 202 of the B-type box, and the lower end edge of the polypropylene separation layer 204 is higher than the water inlet pipe 202 of the B-type box; an activated carbon adsorption layer 206 is arranged on one side of the polypropylene separation layer 204, and the activated carbon adsorption layer 206 is arranged close to one side of the drainage pipe 203 of the B-type box ... The upper end surface of the attachment layer 206 is at the same level as the polypropylene separation layer 204 and is lower than the B-type box drainage pipe 203. The lower end surface of the activated carbon adsorption layer 206 is higher than the lower end surface of the polypropylene separation layer 204. A water guide groove 205 is arranged between the polypropylene separation layer 204 and the activated carbon adsorption layer 206. The water guide groove 205 separates the polypropylene separation layer 204 and the activated carbon adsorption layer 206. The water inlet end of the water guide groove 205 is arranged close to the upper side of the polypropylene separation layer 204, and the outlet end of the water guide groove 205 is arranged close to the upper side of the polypropylene separation layer 204. The water end is arranged near the lower side of the inside of the activated carbon adsorption layer 206, and the water inlet end and the water outlet end of the water guide trough 205 are connected to each other through a hollow water trough; the lower end surfaces of the polypropylene separation layer 204 and the activated carbon adsorption layer 206 are both provided with sealing plates 207, and the sealing plates 207 are sealed and fixedly connected to the inner wall of the B-type rainwater purification box 201, and the sealing plates 207 are waterproof; the lower end inner walls of the two sealing plates 207 are both provided with B-type box collecting buckets 208; and a sludge discharge valve 209 is provided between the B-type box collecting buckets 208.

[0033] When working, rainwater is discharged into the polyester fluidized bin suspension ball 102 through the drainage pipe along the annular water distributor 104, and the gap between the polyester fluidized bin suspension ball 102 is used to separate the large impurities and water in the rainwater. When the water is filtered by the polyester fluidized bin suspension ball 102, it enters the mixing bin 105. At the same time, the solar energy storage box 4 drives the air pump 5 with the electric energy collected by the photovoltaic panel 3, so that the air pump 5 pumps a large number of bubbles into the bubble releaser 107. The generation and rising action of the bubbles make them fully mix the water and impurities inside the mixing bin 105, and the rising bubbles are collected by the gas collection and separation cover 106 and discharged upward along the gap between the polyester fluidized bin suspension balls 102. As the water level of the mixing bin 105 rises, it passes through the glass fiber reinforced plastic grating plate 109 and upward through the pebble buffer layer 110, the filter layer 111, and the fixed plate 112 to further filter and purify the floating impurities and pollutants in the rainwater.

[0034] Next, when the water level of the initial purified water in the water purification layer 113 exceeds the water level threshold set by the water level sensor on the inner wall of the water purification layer 113, the normally closed electrically controlled drain valve on the inner wall of the water purification layer 113 is controlled to open the pipeline connecting it and the water inlet pipe 202 of the type B box, and the excess water enters the type B box collecting bucket 208 from the water inlet pipe 202 of the type B box along the pipeline. After the initial purified water enters the polypropylene separation layer 204 from the port on the lower end side of the polypropylene separation layer 204 for solid-liquid separation, the water above the polypropylene separation layer 204 enters the bottom side of the activated carbon adsorption layer 206 along the water guide groove 205 for sufficient adsorption and filtration, and finally the purified rainwater is discharged and collected from the drain pipe 203 of the type B box, which effectively improves the purification amount and purification efficiency of rainwater.

[0035] Through the above steps, by combining the A-type rainwater purification component 1 with the B-type rainwater purification component 2, the rainwater is purified by the A-type rainwater purification component 1 and then utilized by the flower box vegetation layer 114, while the overflowing primary purified water is discharged into the B-type rainwater purification component 2 for further sufficient purification to facilitate the reuse of rainwater, thereby avoiding the problem of the existing residential flower box water purification device having a small water purification volume and low efficiency, resulting in poor water purification effect of the flower box water purification device in a heavy rain environment and easy overflow of rainwater to cause soil erosion and pollution.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A rainwater purification box, comprising an A-type rainwater purification component (1) and a B-type rainwater purification component (2), characterized in that: The invention also comprises a photovoltaic panel (3), a solar energy storage box (4), and an air pump (5); the solar energy storage box (4) and the B-type rainwater purification component (2) are respectively arranged on both sides of the A-type rainwater purification component (1); the A-type rainwater purification component (1) comprises an A-type rainwater purification box (101), a polyester fluidized bin suspension ball (102), a water permeable limit plate (103), an annular water distributor (104), a mixing bin (105), an air collection and separation cover (106), a bubble releaser (107), an A-type box collection bucket (108), a glass fiber reinforced plastic grating plate (109), a pebble buffer layer (110), a filter layer (111), a fixing plate (112), a water purification layer (113), and a flower box vegetation layer (114).

2. The rainwater purification box according to claim 1, characterized in that: An air pump (5) is arranged inside the solar energy storage box (4), and the solar energy storage box (4) is connected to the air pump (5) for power supply; a photovoltaic panel (3) is arranged on one side of the solar energy storage box (4), and the photovoltaic panel (3) is connected to the solar energy storage box (4) for power supply; and the solar energy storage box (4) has an electric controller, an inverter, and a storage battery built in.

3. The rainwater purification box according to claim 1, characterized in that: A polyester fluidized bin suspension ball (102) is arranged at the inner center of the A-type rainwater purification box (101), and the polyester fluidized bin suspension ball (102) is surrounded by a closed space; water-permeable limit plates (103) are arranged at both upper and lower ends of the polyester fluidized bin suspension ball (102); an annular water distributor (104) is arranged above the upper water-permeable limit plate (103), and the annular water distributor (104) is fixedly connected to the inner wall of the A-type rainwater purification box (101), and the annular water distributor (104) is connected to an external rainwater drainage pipeline.

4. The rainwater purification box according to claim 3, characterized in that: A mixing chamber (105) is provided below the water-permeable limit plate (103) at the lower end, and the mixing chamber (105) is arranged inside the A-type rainwater purification box (101); a gas collecting and separating cover (106) is provided inside the mixing chamber (105), and an upper port of the gas collecting and separating cover (106) is fixedly connected to the lower end of the water-permeable limit plate (103).

5. The rainwater purification box according to claim 4, characterized in that: A bubble releaser (107) is arranged below the gas collection and separation cover (106), and the air input end of the bubble releaser (107) is connected to the output end pipeline of the air pump (5); A-type box collection buckets (108) are arranged at the four corners below the inner wall of the mixing chamber (105), and the A-type box collection bucket (108) and the mixing chamber (105) are integrally formed.

6. The rainwater purification box according to claim 3, characterized in that: Glass fiber reinforced plastic grating plates (109) are arranged on both sides of the water-permeable limit plate (103) at the lower end, and the glass fiber reinforced plastic grating plates (109) are fixedly connected to the inner wall of the A-type rainwater purification box (101), and two glass fiber reinforced plastic grating plates (109) are arranged; a pebble buffer layer (110) is arranged at the upper end of each glass fiber reinforced plastic grating plate (109); a filter layer (111) is arranged at the upper end of the pebble buffer layer (110); a fixing plate (112) is arranged at the upper end of the filter layer (111), and the fixing plate (112) is made of a porous water-permeable material.

7. The rainwater purification box according to claim 6, characterized in that: A water purification layer (113) is arranged at the upper end of the fixed plate (112); a flower box vegetation layer (114) is arranged at the upper end of the water purification layer (113); and a water level sensor and an electric-controlled drainage valve are arranged on the inner wall of the flower box vegetation layer (114).

8. The rainwater purification box according to claim 1, characterized in that: The B-type rainwater purification component (2) comprises a B-type rainwater purification box (201), a B-type box water inlet pipe (202), a B-type box drainage pipe (203), a polypropylene separation layer (204), a water guide groove (205), an activated carbon adsorption layer (206), a sealing plate (207), a B-type box collection bucket (208), and a sludge discharge valve (209); the B-type box water inlet pipe (202) and the B-type box drainage pipe (203) are respectively arranged at two ends of the outer wall of the B-type rainwater purification box (201), and the horizontal height of the B-type box water inlet pipe (202) is lower than that of the B-type box drainage pipe (203), and the B-type box water inlet pipe (202) is connected to the electric control drainage valve pipeline on the inner wall of the flower box vegetation layer (114); the B-type rainwater purification box (201) comprises a plurality of rainwater purification components, wherein the rainwater purification components are provided with a plurality of rainwater purification components, and the rainwater purification components are provided with a plurality of rainwater purification components, wherein ... A polypropylene separation layer (204) is provided inside the box (201), and the polypropylene separation layer (204) is provided close to one side of the water inlet pipe (202) of the B-type box, and the lower end edge of the polypropylene separation layer (204) is higher than the water inlet pipe (202) of the B-type box; an activated carbon adsorption layer (206) is provided on one side of the polypropylene separation layer (204), and the activated carbon adsorption layer (206) is provided close to one side of the drainage pipe (203) of the B-type box, and the upper end surface of the activated carbon adsorption layer (206) is at the same level as the polypropylene separation layer (204) and is lower than the drainage pipe (203) of the B-type box, and the lower end surface of the activated carbon adsorption layer (206) is higher than the lower end surface of the polypropylene separation layer (204).

9. The rainwater purification box according to claim 8, characterized in that: A water guide groove (205) is arranged between the polypropylene separation layer (204) and the activated carbon adsorption layer (206), and the water guide groove (205) separates the polypropylene separation layer (204) and the activated carbon adsorption layer (206), and the water inlet end of the water guide groove (205) is arranged close to the upper side of the polypropylene separation layer (204), and the water outlet end of the water guide groove (205) is arranged close to the lower side of the inside of the activated carbon adsorption layer (206), and the inside between the water inlet end and the water outlet end of the water guide groove (205) is a connected hollow water channel.

10. The rainwater purification box according to claim 8, characterized in that: The lower end surfaces of the polypropylene separation layer (204) and the activated carbon adsorption layer (206) are both provided with sealing plates (207), and the sealing plates (207) are sealed and fixedly connected to the inner wall of the B-type rainwater purification box (201), and the sealing plates (207) are impermeable; the lower end inner walls of the two sealing plates (207) are both provided with B-type box collecting hoppers (208); and a sludge discharge valve (209) is provided between the B-type box collecting hoppers (208).

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