Inspection well capable of purifying rainwater

Abstract

The utility model relates to the technical field of inspection wells, in particular to a rainwater purification inspection well which comprises a purification area, a mud storage area and an L-shaped grating baffle, one end of the grating baffle is fixed to the side wall of an inner cavity of the inspection well, the other end of the grating baffle is fixed to the top of a water baffle, and the bottom of the water baffle is fixed to the bottom of the inner cavity of the inspection well. The drainage pipe sequentially passes through the side wall of the inspection well and the purification area and then penetrates through the grating baffle plate; a perforated plate is arranged at the bottom of the purification area, a cornice plate is fixed to the side wall of the grating baffle, a floating block is arranged at the top of the cornice plate, the top of a connecting rod penetrates through the cornice plate and is fixed to the bottom of the floating block, and the bottom of the connecting rod is fixed to the top of the valve plate; when the bottom of the floating block abuts against the top of the cornice plate, the valve plate blocks the input end of the drainage pipe, the floating block is used for being matched with the valve plate, and when the water flow is large, sewage can be directly drained from the drainage pipe so as to be prevented from overflowing.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection wells, and specifically relates to an inspection well for purifying rainwater. Background Technique

[0002] With the development of the domestic economy and the improvement of people's living standards, the polluted water in rivers has gradually become the focus of environmental protection. The main reasons for the pollution of urban inland rivers in China are the discharge of domestic sewage and the inflow of urban non-point source pollution. Among them, the initial rainwater washes the air and roads, carrying pollutants in the air and on the ground, and is discharged into the urban inland river water body along the urban rainwater pipe network nearby, exceeding the environmental self-purification capacity and causing the deterioration of the water quality of the inland river. The main pollutants in the initial rainwater are inorganic suspended solids, organic matter, heavy metals, grease, etc. Among them, the inorganic suspended solids are easy to settle into the bottom mud after entering the inland river, and the total amount of heavy metal and grease pollutants is relatively small, and they disappear through self-purification in the river channel, but the concentration of organic matter is relatively high, and directly entering the river channel is likely to cause water pollution, and in severe cases, the water body will turn black and stinky.

[0003] The patent publication number is CN221798664U, a Chinese utility model patent published on October 1, 2024, which discloses an easily cleanable plastic inspection well. Through the cooperation of a cleaning mechanism and a discharging mechanism, it can complete the daily cleaning of the filter cylinder without frequently lifting the filter cylinder out of the wellbore, but it cannot adjust the water passing method according to the water flow. If the water inflow is too large, the sewage will overflow outward. Content of the Utility Model

[0004] In view of the above problems, the utility model provides an inspection well for purifying rainwater, which uses a floating block and a valve plate in cooperation. When the water flow is large, the sewage can directly drain from the drain pipe to avoid sewage overflow.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] An inspection well for purifying rainwater includes a purification area, a sludge storage area, and a grid baffle. The grid baffle is L-shaped. One end of the grid baffle is fixed to the inner cavity side wall of the inspection well, and the other end of the grid baffle is fixed to the top of the water baffle. The bottom of the water baffle is fixed to the inner cavity bottom of the inspection well; the sludge storage area is communicated with the water inlet pipe, and the drain pipe passes through the inspection well side wall and the purification area in sequence and then penetrates through the grid baffle; a perforated plate is arranged at the bottom of the purification area, a cornice plate is fixed to the side wall of the grid baffle, a floating block is arranged at the top of the cornice plate, the top of a connecting rod penetrates through the cornice plate and is fixed to the bottom of the floating block, and the bottom of the connecting rod is fixed to the top of the valve plate; when the bottom of the floating block abuts against the top of the cornice plate, the valve plate blocks the input end of the drain pipe.

[0007] Further, a guide rail is arranged on the outer periphery of the valve plate. The top of the guide rail is fixed to the bottom of the cornice plate, and the top of the guide rail is fixed to the inner cavity bottom of the inspection well.

[0008] Furthermore, a manhole cover is provided at the top of the inspection well.

[0009] Furthermore, a handle is provided at the top of the manhole cover.

[0010] Furthermore, lightweight fillers are provided inside the purification area.

[0011] The utility model has the following beneficial effects:

[0012] 1. The utility model uses a floating block in cooperation with a valve plate. When the water flow rate is large, sewage can be directly discharged from the drain pipe to avoid sewage overflow.

[0013] 2. When the rainfall intensity is low and the rainfall volume is small, the drain pipe is closed, and the upper space of the inspection well is used as a water quality purification area. Lightweight fillers are used to purify the water quality, and the purified water seeps directly into the ground to achieve the purpose of purifying the initial polluted rainwater.

[0014] 3. When the rainfall intensity is high and the rainfall volume is large, the drain pipe is opened, and the rainwater inspection well normally discharges rainwater for flood discharge to achieve the purpose of flood discharge during heavy rain. At the same time, the aging biological film generated by the lightweight fillers is washed away.

[0015] 4. A sludge accumulation area is provided at the bottom of the well. During sunny days, a sludge truck can be used to suck and discharge the sludge. Description of the Drawings

[0016] Figure 1 is a structural schematic diagram of the utility model;

[0017] Figure 2 is a structural schematic diagram of the utility model when there is a large amount of water inlet.

[0018] Structural schematic diagram marked in the drawings:

[0019] 1. Purification area; 2. Sludge storage area; 3. Grid baffle; 4. Lightweight filler; 5. Water baffle; 6. Drain pipe; 7. Perforated plate; 8. Valve plate; 9. Connecting rod; 10. Floating block; 11. Cornice plate; 12. Guide rail; 13. Water inlet pipe; 14. Manhole cover; 15. Handle. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model.

[0021] As Figure 1 - Figure 2As shown in the figure, the inspection well for purifying rainwater in this embodiment includes a purification area 1, a sludge storage area 2, and a grid baffle 3. The grid baffle 3 is L-shaped. One end of the grid baffle 3 is fixed to the inner wall of the inspection well cavity, and the other end of the grid baffle 3 is fixed to the top of the water baffle 5. The bottom of the water baffle 5 is fixed to the bottom of the inspection well cavity; the sludge storage area 2 is communicated with the water inlet pipe 13, and the drain pipe 6 passes through the side wall of the inspection well and the purification area 1 in sequence and then penetrates through the grid baffle 3; a perforated plate 7 is arranged at the bottom of the purification area 1, a cornice plate 11 is fixed to the side wall of the grid baffle 3, a floating block 10 is arranged at the top of the cornice plate 11, the top of the connecting rod 9 penetrates through the cornice plate 11 and is fixed to the bottom of the floating block 10, and the bottom of the connecting rod 9 is fixed to the top of the valve plate 8; when the bottom of the floating block 10 abuts against the top of the cornice plate 11, the valve plate 8 blocks the input end of the drain pipe 6.

[0022] When the rainfall intensity is low and the rainfall volume is small, the drain pipe 6 is closed, and the upper space of the inspection well is used as the purification area 1. The purified water seeps directly into the ground to achieve the purpose of purifying the initially polluted rainwater; when the rainfall intensity is high and the rainfall volume is large, the drain pipe 6 is opened, and the rainwater inspection well discharges rainwater normally for flood discharge to achieve the purpose of flood discharge during heavy rain.

[0023] Further, a guide rail 12 is arranged on the outer periphery of the valve plate 8. The top of the guide rail 12 is fixed to the bottom of the cornice plate 11, and the top of the guide rail 12 is fixed to the bottom of the inspection well cavity.

[0024] The guide rail 12 positions the moving range of the valve plate 8.

[0025] Further, a manhole cover 14 is arranged on the top of the inspection well.

[0026] Further, a handle 15 is arranged on the top of the manhole cover 14.

[0027] Further, a light filler 4 is arranged inside the purification area 1.

[0028] The light filler is used to purify water quality. When the rainfall volume is large and the valve plate 8 rises, the flowing water passing through can scour the aged biofilm generated by the light filler.

[0029] The usage method of the utility model is as follows:

[0030] When it does not rain and there is no water inlet in the inspection well, the valve plate 8 falls to the bottom of the guide rail 12 under the action of gravity, and the drain pipe 6 buried in the middle of the water quality purification area 1 is blocked. At the same time, the manhole cover 14 can be taken out through the hidden handle 15, and the sludge storage area 2 is sucked and cleaned by a sludge suction truck.

[0031] When the rainfall intensity is low and the rainfall volume is small, the initial polluted rainwater enters the bottom of the inspection well through the inlet pipe 13, and the rainwater liquid level rises slowly. The sediment and large particle organic matters carried by the rainwater settle in the sludge storage area 2 under the action of gravity. After the rainwater liquid level rises to the grid baffle 3, it enters the left water purification area 1 through the grid baffle 3, and the garbage and large particle substances are blocked outside the grid baffle 3. Since the specific surface area of the filler 4 is relatively large, a large amount of microorganisms can be aggregated to form a biofilm attached to the surface of the filler 4. After being fully mixed with the initial polluted rainwater, the carbonization and nitrification reactions are carried out by using the dissolved oxygen carried in the rainwater, and the content of organic pollutants is greatly reduced. At the same time, under the action of gravity, the purified rainwater seeps out from the bottom perforated plate 7.

[0032] When the rainfall intensity is high and the rainfall volume is large, the rainwater liquid level rises rapidly after entering the inspection well. When it exceeds the height of the cantilever plate 11, the floating block 10 can be floated, and at the same time, the connecting rod 9 slides the valve plate 8 upward along the guide rail 12 until it is opened. At this time, the rainwater is directly discharged from the inspection well through the drain pipe 6 buried in the middle of the water purification area 1 to achieve the purpose of flood discharge. At the same time, the filler in the purification area 1 floats into a fluidized state. Under the disturbance of high-speed water flow, the impurities and aged biofilm on the surface of the filler fall off, extending the service life of the filler and enhancing the purification effect of the water purification area 1.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manhole for purifying rainwater, comprising a purification area (1), a sludge storage area (2) and a grid baffle (3). The grid baffle (3) is in an L shape. One end of the grid baffle (3) is fixed to the inner wall of the manhole cavity, and the other end of the grid baffle (3) is fixed to the top of the water baffle (5). The bottom of the water baffle (5) is fixed to the bottom of the manhole cavity. The sludge storage area (2) is communicated with the water inlet pipe (13), and the drain pipe (6) passes through the side wall of the manhole and the purification area (1) in sequence and then penetrates through the grid baffle (3). A perforated plate (7) is arranged at the bottom of the purification area (1), characterized in that, The side wall of the grille baffle (3) is fixed with a cornice plate (11). A floating block (10) is arranged at the top of the cornice plate (11). The top of the connecting rod (9) penetrates through the cornice plate (11) and is fixed to the bottom of the floating block (10). The bottom of the connecting rod (9) is fixed to the top of the valve plate (8). When the bottom of the floating block (10) abuts against the top of the cornice plate (11), the valve plate (8) blocks the input end of the drain pipe (6).

2. The inspection well for purifying rainwater according to claim 1, characterized in that, A guide rail (12) is arranged on the outer periphery of the valve plate (8). The top of the guide rail (12) is fixed to the bottom of the cornice plate (11), and the top of the guide rail (12) is fixed to the bottom of the inner cavity of the inspection well.

3. The inspection well for purifying rainwater according to claim 1, characterized in that, A manhole cover (14) is arranged at the top of the inspection well.

4. The inspection well for purifying rainwater according to claim 3, characterized in that, A handle (15) is arranged at the top of the manhole cover (14).

5. The inspection well for purifying rainwater according to claim 1, wherein Lightweight filler (4) is arranged inside the purification area (1).

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