Multi-stage precipitation device for rainwater treatment in sewage well
Through the design of the multi-stage precipitation device, the multi-stage rotation separation is performed by using the motor-driven rotating rod and honeycomb plate, which solves the problem of poor precipitation effect caused by excessive water flow rate in traditional devices, and achieves efficient solid-liquid separation and sediment settlement, meeting the operating needs of sponge cities.
Patent Information
- Application Number
- CN202510586761.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2025-07-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The rainwater sedimentation device in traditional sewage wells has a very fast water flow rate during heavy rain, resulting in insufficient hydraulic residence time, difficult to settle in fine particles of silt, and lacks a flow rate buffer design, resulting in aggravation of turbulence and poor sedimentation effect.
Multi-stage precipitation device is adopted, including precipitation wells, pretreatment components, collection components and precipitation components. Multi-stage rotational separation is performed by motor-driven rotary rods and honeycomb plates, and water flow is controlled by combining electric gates and turbidity sensors to achieve multi-stage precipitation and solid-liquid separation.
It improves the efficiency and effect of rainwater treatment, reduces the secondary suspension of silt and sand, achieves efficient solid-liquid separation, avoids blockage, and meets the efficient, low-consumption and maintenance-free needs of sponge cities.
Smart Images
Figure CN120364792A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of rainwater treatment, and particularly relates to a multi-stage precipitation device for rainwater treatment in a sewage well. Background Art
[0002] The current sewage inlet technology is difficult to meet the operation requirements of the sponge city for the sewage well with high efficiency, low consumption and maintenance-free. For example, the traditional rainwater precipitation device in the traditional sewage well has poor treatment effect on sediment. The main defects are as follows: the structure of the single-stage precipitation area is extensive, the water flow velocity is too fast during heavy rain, resulting in insufficient hydraulic retention time, and fine-grained sediment is difficult to effectively settle; the lack of flow velocity buffer design intensifies the secondary suspension of the settled sediment due to the turbulent flow phenomenon, resulting in poor precipitation effect. Summary of the Invention
[0003] The main purpose of the present invention is to provide a multi-stage precipitation device for rainwater treatment in a sewage well, which can effectively solve the problems in the background art.
[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A multi-stage precipitation device for rainwater treatment in a sewage well includes a buried well, a precipitation well is placed inside the buried well, a sewage discharge pipe is fixedly arranged at a position close to the lower side of the front end of the precipitation well, a drain pipe is fixedly arranged at a position close to the middle of one end of the precipitation well, an electric gate is fixedly installed at a position on the inner wall of the precipitation well corresponding to the drain pipe, a precipitation component is arranged at an inner position on the lower side of the precipitation well, a pretreatment component is arranged inside the upper side of the precipitation well, a collection component is arranged on one side of the upper side of the precipitation well close to the pretreatment component. The precipitation component includes two groups of fixed bars fixedly arranged on the inner walls of both sides of the precipitation well, a honeycomb plate is slidably arranged outside the two groups of fixed bars, chute openings are respectively arranged at positions on both sides of the honeycomb plate corresponding to the two groups of fixed bars, a plurality of groups of precipitation pipes are arranged inside the honeycomb plate, a fixed pipe is fixedly arranged inside one side of the honeycomb plate, two groups of fixed rods are fixedly arranged at the lower end of the honeycomb plate, a float is fixedly arranged at the lower end of the two groups of fixed rods, a cylinder is fixedly arranged at the upper end of the honeycomb plate, and a convex ring is fixedly arranged at the bottom inside the cylinder.
[0005] Preferably, the pretreatment component includes a processing shell fixedly arranged inside the upper side of the sedimentation well. The lower side of the processing shell is a sedimentation chamber. A sewage inlet pipe is fixedly arranged at a position near the rear side of one side of the processing shell, and a sewage outlet pipe is fixedly arranged at a position near the front side of one side of the processing shell. A first motor is fixedly arranged at the upper end of the processing shell. The lower end of the rotating shaft of the first motor is fixedly provided with a rotating rod. Two groups of rotating blades are fixedly arranged on the outer side of the rotating rod. A branch pipe is fixedly arranged at a position near the lower side of one side of the sedimentation chamber. A sediment suction pipe is fixedly arranged on one side of the branch pipe. A second motor is fixedly installed on the upper side of the sediment suction pipe. The sewage outlet end of the second motor is fixedly provided with a sediment discharge pipe. Two groups of spherical discs are fixedly arranged at the lower end of the rotating rod. A return spring is sleeved between the lower side of the rotating rod near the spherical disc and the inner wall of the cylinder.
[0006] Preferably, the collection component includes two fixing plates fixedly arranged on the inner wall of one side of the sedimentation well. One end of the upper group of the two fixing plates is fixedly installed with a third motor. The lower end of the rotating shaft of the third motor is fixedly provided with a threaded rod. A guide rod is fixedly arranged between the two fixing plates near one side of the threaded rod. A fixed threaded sleeve is movably arranged below the threaded rod and the guide rod. One end of the fixed threaded sleeve is fixedly provided with a collection box. An interface is opened on one side of the collection box. A box door is installed on the upper side of the collection box. A fixed bracket is fixedly arranged at the lower end of the collection box. A pressing plate is fixedly arranged at the lower end of the fixed bracket.
[0007] Preferably, the sewage discharge pipe and the drain pipe communicate with the inside of the sedimentation well. The drain pipe corresponds to the position of the electric gate. A turbidity sensor is arranged at the bottom of the electric gate. The fixed strip is engaged with the chute opening. The sedimentation pipe is inclined.
[0008] Preferably, the sedimentation chamber is arranged in an inverted cone shape. The sewage inlet pipe and the sewage outlet pipe communicate with the inside of the processing shell. The sewage inlet pipe passes through one side of the sedimentation well. The rotating rod passes through the bottom of the sedimentation chamber to the inner side position of the cylinder. The branch pipe and the sediment suction pipe communicate with the inside of the sedimentation chamber.
[0009] Preferably, the lower side of the sediment suction pipe passes through the fixed pipe and extends to the bottom position of the sedimentation well. The sediment discharge pipe passes through the upper cover plate of the sedimentation well. The spherical disc is movably arranged inside the cylinder. The return spring is in a compressed state.
[0010] Preferably, the threaded rod is in threaded connection with the fixed threaded sleeve, and the fixed threaded sleeve is slidably arranged on the guide rod.
[0011] Preferably, the position where the collection box is provided with the interface corresponds to the sewage outlet pipe and is attached thereto. The pressing plate presses on the upper end of the honeycomb board.
[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Rainwater flows into the interior of the treatment shell through the sewage inlet pipe. The first motor drives the rotating rod and the rotating piece to rotate, causing the incoming rainwater to rotate rapidly. Using the centrifugal force principle, solid particles in the liquid are quickly separated, and the sediment in the rainwater is thrown to the shell wall and slides down to the sedimentation chamber for collection. The rainwater after primary pretreatment is discharged into the collection box through the sewage outlet pipe under the shearing force of the rotating force for the next treatment. By using the second motor, the solid sediment deposited in the sedimentation chamber and the sediment secondarily deposited at the bottom of the sedimentation well are extracted through the sediment extraction pipe and the branch pipe and discharged outward through the sediment discharge pipe. By initially pretreating the solid particles in the rainwater, the precipitation treatment of the rainwater is accelerated.
[0013] 2. The sewage and rainwater discharged through the sewage outlet pipe later enter the collection box through the docking port. The liquid will directly fall, and the solid floating substances contained in it will be collected in the filter collection box. When subsequent cleaning is required, the third motor can be used to drive the threaded rod to rotate, driving the fixed threaded sleeve connected by threads to drive the collection box to slide upward along the guide rod at the same time, moving to the manhole cover of the sedimentation well. By opening the manhole cover and the box door, the filter debris inside can be processed.
[0014] 3. The falling rainwater flows through several sedimentation pipes at the partition of the honeycomb plate to the middle of the sedimentation well again to perform secondary sedimentation on the rainwater that has not been treated cleanly. The inclined honeycomb plate forms a spatial stratification at the bottom of the sedimentation well, realizing hydraulic optimization and the shallow pool effect, achieving efficient and compact solid-liquid separation. In addition, it reduces the blockage of the sediment that has started to precipitate at the bottom of the sedimentation well by the subsequent incoming water source, avoiding directly impacting it and exacerbating the secondary suspension of the settled sediment. Through the multi-stage treatment and sedimentation of the rainwater, the effect of rainwater treatment is greatly improved. The early rainwater is discharged through the sewage discharge pipe, and then the sewage discharge pipe is closed. The turbidity sensor on the electric gate is used to detect the incoming water source, and then the drain pipe is opened to discharge the clean natural water in the middle and late stages. Finally, when filtering and treating the impurities inside the collection box, the pressing plate will loosen the pressing on the honeycomb plate. At this time, the floating ball in the water will push the honeycomb plate downward under the action of buoyancy, and at the same time, the return spring will expand, causing the spherical disk to contact the convex ring. The first motor drives the rotating rod to rotate, pushing the honeycomb plate to perform reciprocating up and down vibration movements to achieve the purpose of jittering, physically cleaning the impurities stuck in the sedimentation pipes, and avoiding blockage or affecting sedimentation. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of a multi-stage sedimentation device for rainwater treatment in a sewage well according to the present invention; Figure 2 It is a schematic diagram of the internal structure of the sedimentation well of a multi-stage sedimentation device for rainwater treatment in a sewage well according to the present invention; Figure 3For a multi - stage sedimentation device for rainwater treatment in a sewage well of the present invention Figure 2 Partial structural schematic diagram; Figure 4 Partial structural schematic diagram of the sedimentation component of a multi - stage sedimentation device for rainwater treatment in a sewage well of the present invention; Figure 5 Structural schematic diagram of the pretreatment component of a multi - stage sedimentation device for rainwater treatment in a sewage well of the present invention; Figure 6 For a multi - stage sedimentation device for rainwater treatment in a sewage well of the present invention Figure 5 Enlarged structural schematic diagram of part A Figure 7 Partial structural schematic diagram of the pretreatment component of a multi - stage sedimentation device for rainwater treatment in a sewage well of the present invention; Figure 8 Structural schematic diagram of the collection component of a multi - stage sedimentation device for rainwater treatment in a sewage well of the present invention; Figure 9 Side - view structural schematic diagram of the collection component of a multi - stage sedimentation device for rainwater treatment in a sewage well of the present invention.
[0016] In the figure: 1, buried well; 2, sedimentation well; 3, sewage discharge pipe; 4, drain pipe; 5, electric gate; 6, sedimentation component; 61, fixed strip; 62, honeycomb plate; 63, chute opening; 64, sedimentation pipe; 65, fixed pipe; 66, fixed rod; 67, float; 68, cylinder; 69, convex ring; 7, pretreatment component; 71, treatment shell; 72, sedimentation chamber; 73, sewage inlet pipe; 74, sewage outlet pipe; 75, first motor; 76, rotating rod; 77, rotating piece; 78, branch pipe; 79, sediment - pumping pipe; 710, second motor; 711, sediment - discharging pipe; 712, spherical disc; 713, return spring; 8, collection component; 81, fixed plate; 82, third motor; 83, threaded rod; 84, guide rod; 85, fixed threaded sleeve; 86, collection box; 87, docking port; 88, box door; 89, fixed bracket; 810, pressing plate. Detailed implementation manners
[0017] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.
[0018] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is a relative orientation or position relationship, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0019] Please refer to Figures 1-9 , an embodiment provided by the present invention: a multi-stage precipitation device for rainwater treatment in a sewage well, including a buried well 1. A precipitation well 2 is placed inside the buried well 1. A sewage discharge pipe 3 is fixedly arranged at a position near the lower side of the front end of the precipitation well 2. A drain pipe 4 is fixedly arranged at a position near the middle of one end of the precipitation well 2. An electric gate 5 is fixedly installed at a position corresponding to the drain pipe 4 on the inner wall of the precipitation well 2. A precipitation assembly 6 is arranged at the inner position of the lower side of the precipitation well 2. A pretreatment assembly 7 is arranged inside the upper side of the precipitation well 2. A collection assembly 8 is arranged at a position near one side of the pretreatment assembly 7 inside the upper side of the precipitation well 2. The precipitation assembly 6 includes two groups of fixed bars 61 fixedly arranged on the inner walls of both sides of the precipitation well 2. A honeycomb plate 62 is slidably arranged on the outer sides of the two groups of fixed bars 61. Slide groove openings 63 are formed at positions corresponding to the two groups of fixed bars 61 on both sides of the honeycomb plate 62. A number of groups of precipitation tubes 64 are arranged inside the honeycomb plate 62. A fixed tube 65 is fixedly arranged inside one side of the honeycomb plate 62. Two groups of fixed rods 66 are fixedly arranged at the lower end of the honeycomb plate 62. A float 67 is fixedly arranged at the lower ends of the two groups of fixed rods 66. A cylinder 68 is fixedly arranged at the upper end of the honeycomb plate 62. A convex block ring 69 is fixedly arranged at the bottom inside the cylinder 68.
[0020] The sewage discharge pipe 3 and the drain pipe 4 communicate with the inside of the precipitation well 2. The drain pipe 4 corresponds to the position of the electric gate 5. A turbidity sensor is arranged at the bottom of the electric gate 5. The fixed bars 61 are engaged with the slide groove openings 63. The precipitation tubes 64 are inclined.
[0021] The fallen rainwater flows into the sedimentation well 2 again through several sedimentation pipes 64 at the separation points in the honeycomb plate 62 to perform secondary sedimentation on the rainwater that has not been treated cleanly. The inclined honeycomb plate 62 forms a spatial stratification at the bottom of the sedimentation well 2, achieving hydraulic optimization and the shallow pond effect, realizing efficient and compact solid-liquid separation. Additionally, it reduces the blockage of the sediment that has started to settle at the bottom of the sedimentation well 2 by the subsequent incoming water source, avoiding direct impact on it and exacerbating the secondary suspension of the settled sediment. Through the multi-stage treatment and sedimentation of rainwater, the treatment effect of rainwater is greatly improved. The early rainwater is discharged through the sewage pipe 3, and then the sewage pipe 3 is closed. The turbidity sensor on the electric gate 5 detects the incoming water source, and then the drain pipe 4 is opened to discharge the clean natural water in the middle and late stages. Finally, when filtering the impurities inside the collection box 86, the pressing plate 810 will loosen the pressing on the honeycomb plate 62. At this time, the floating buoy 67 in the water will push the honeycomb plate 62 downward under the action of buoyancy, and at the same time, the return spring 713 will expand, making the spherical disk 712 contact with the convex ring 69. The first motor 75 drives the rotating rod 76 to rotate, pushing the honeycomb plate 62 to perform reciprocating up and down vibration movements to achieve the purpose of jittering, physically cleaning the impurities adhered to the sedimentation pipes 64, and avoiding blockage or affecting sedimentation.
[0022] The pretreatment assembly 7 includes a processing shell 71 fixedly arranged inside the upper side of the sedimentation well 2. The lower side of the processing shell 71 is a sedimentation chamber 72. A sewage inlet pipe 73 is fixedly arranged at a position near the rear side of one side of the processing shell 71, and a sewage outlet pipe 74 is fixedly arranged at a position near the front side of one side of the processing shell 71. A first motor 75 is fixedly arranged at the upper end of the processing shell 71. The lower end of the rotating shaft of the first motor 75 is fixedly provided with a rotating rod 76. Two groups of rotating blades 77 are fixedly arranged on the outer side of the rotating rod 76. A branch pipe 78 is fixedly arranged at a position near the lower side of one side of the sedimentation chamber 72. A sediment extraction pipe 79 is fixedly arranged on one side of the branch pipe 78. A second motor 710 is fixedly installed on the upper side of the sediment extraction pipe 79. The sewage outlet end of the second motor 710 is fixedly provided with a sediment discharge pipe 711. Two groups of spherical disks 712 are fixedly arranged at the lower end of the rotating rod 76. A return spring 713 is sleeved between the lower side of the rotating rod 76 near the spherical disk 712 and the inner wall of the cylinder 68.
[0023] The sedimentation chamber 72 is arranged in an inverted cone shape. The sewage inlet pipe 73 and the sewage outlet pipe 74 are communicated with the inside of the processing shell 71. The sewage inlet pipe 73 passes through one side of the sedimentation well 2. The rotating rod 76 passes through the bottom of the sedimentation chamber 72 to the inner side position of the cylinder 68. The branch pipe 78 and the sediment extraction pipe 79 are communicated with the inside of the sedimentation chamber 72. The lower side of the sediment extraction pipe 79 passes through the fixed pipe 65 and extends to the bottom position of the sedimentation well 2. The sediment discharge pipe 711 passes through the upper cover plate of the sedimentation well 2. The spherical disk 712 is movably arranged inside the cylinder 68, and the return spring 713 is in a compressed state.
[0024] Rainwater flows into the interior of the treatment shell 71 through the sewage inlet pipe 73. The first motor 75 drives the rotating rod 76 and the rotating piece 77 to rotate, causing the incoming rainwater to rotate rapidly. Using the principle of centrifugal force, solid particles in the liquid are quickly separated. The sediment in the rainwater is thrown to the shell wall and slides down to the sedimentation chamber 72 for collection. The initially pre-treated rainwater is discharged into the collection box 86 through the sewage outlet pipe 74 under the shearing force of the rotating force for further treatment. By using the second motor 710, the solid sediment precipitated in the sedimentation chamber 72 and the sediment secondarily precipitated at the bottom of the sedimentation well 2 are extracted through the sediment extraction pipe 79 and the branch pipe 78, and discharged outwards through the sediment discharge pipe 711. By initially pre-treating the solid particles in the rainwater, the precipitation treatment of the rainwater is accelerated.
[0025] The collection assembly 8 includes two groups of fixed plates 81 fixedly arranged on one side inner wall of the sedimentation well 2. One end of the upper group of the two groups of fixed plates 81 is fixedly installed with a third motor 82. The lower end of the rotating shaft of the third motor 82 is fixedly provided with a threaded rod 83. A guide rod 84 is fixedly arranged between the two groups of fixed plates 81 close to one side of the threaded rod 83. A fixed threaded sleeve 85 is movably arranged below the threaded rod 83 and the guide rod 84. One end of the fixed threaded sleeve 85 is fixedly provided with a collection box 86. An interface 87 is opened on one side of the collection box 86. A box door 88 is installed on the upper side of the collection box 86. The lower end of the collection box 86 is fixedly provided with a fixed bracket 89. The lower end of the fixed bracket 89 is fixedly provided with a pressing plate 810.
[0026] The threaded rod 83 is threadedly connected to the fixed threaded sleeve 85. The fixed threaded sleeve 85 is slidably arranged with the guide rod 84. The position of the collection box 86 where the interface 87 is opened is correspondingly and fittingly arranged with the sewage outlet pipe 74. The pressing plate 810 presses on the upper end of the honeycomb plate 62.
[0027] The sewage and rainwater discharged through the sewage outlet pipe 74 later enter the collection box 86 through the interface 87. The liquid will directly fall, and the solid floating substances contained therein will be filtered and collected in the collection box 86. When subsequent cleaning is required, the third motor 82 can be driven to rotate the threaded rod 83, driving the fixed threaded sleeve 85 connected by threads to drive the collection box 86 to slide upwards along the guide rod 84 at the same time, and move to the manhole cover of the sedimentation well 2. By opening the manhole cover and the box door 88, the internal filtered debris can be processed.
[0028] Working principle: First, the sewage discharge pipe 3, the drain pipe 4, the sewage inlet pipe 73, and the sediment discharge pipe 711 are respectively connected to different urban pipes. When in use, rainwater flows into the interior of the treatment shell 71 through the sewage inlet pipe 73. The first motor 75 drives the rotating rod 76 and the rotating plate 77 to rotate, causing the incoming rainwater to rotate rapidly. Using the centrifugal force principle, solid particles in the liquid are quickly separated, and the sediment in the rainwater is thrown to the shell wall and slides down to the sedimentation chamber 72 for collection. The rainwater after primary pretreatment is discharged into the collection box 86 through the sewage outlet pipe 74 under the shearing of the rotating force for further treatment. By using the second motor 710, the solid sediment deposited in the sedimentation chamber 72 and the sediment secondarily deposited at the bottom of the sedimentation well 2 are extracted through the sediment extraction pipe 79 and the branch pipe 78 and discharged outward through the sediment discharge pipe 711. By initially pretreating the solid particles in the rainwater, the precipitation treatment of the rainwater is accelerated. In addition, the sewage and rainwater discharged through the sewage outlet pipe 74 later enter the collection box 86 through the docking port 87. The liquid will directly fall, and the solid floating substances contained therein will be collected in the filter collection box 86. When subsequent cleaning is required, the third motor 82 can be used to drive the threaded rod 83 to rotate, driving the fixed threaded sleeve 85 connected by threads to drive the collection box 86 to slide upward along the guide rod 84 at the same time, moving to the manhole cover of the sedimentation well 2. By opening the manhole cover and the box door 88, the filter debris inside can be processed. The falling rainwater then flows through several sedimentation pipes 64 at the partition in the honeycomb plate 62 to the sedimentation well 2 to perform secondary sedimentation on the rainwater that has not been treated cleanly. The inclined honeycomb plate 62 forms a spatial stratification at the bottom of the sedimentation well 2, realizing hydraulic optimization and the shallow pool effect, achieving efficient and compact solid-liquid separation. In addition, it reduces the blockage of the sediment initially deposited at the bottom of the sedimentation well 2 by the subsequent incoming water source, avoiding directly impacting it and exacerbating the secondary suspension of the settled sediment. Through the multi-stage treatment and sedimentation of the rainwater, the treatment effect of the rainwater is greatly improved. The early rainwater is discharged through the sewage discharge pipe 3, and then the sewage discharge pipe 3 is closed. The turbidity sensor on the electric gate 5 detects the incoming water source, and then the drain pipe 4 is opened to discharge the clean natural water in the middle and late stages. Finally, when filtering and treating the impurities inside the collection box 86, the pressing plate 810 will loosen the pressing on the honeycomb plate 62. At this time, the floating buoy 67 in the water will push the honeycomb plate 62 downward under the action of buoyancy, and at the same time, the return spring 713 will expand, causing the spherical disk 712 to contact the convex ring 69. The first motor 75 drives the rotating rod 76 to rotate, pushing the honeycomb plate 62 to perform up-and-down reciprocating vibration motion to achieve the purpose of jittering, physically cleaning the impurities adhered to the sedimentation pipes 64, and avoiding blockage or affecting sedimentation.
[0029] The electrical components of the electric gate 5, turbidity sensor, first motor 75, second motor 710, and third motor 82 in the present invention are existing structures in the art, and their usage and connection methods belong to the common knowledge in this field. Their working principles are already well-known technologies, and the models are selected according to actual usage. Therefore, no further detailed explanation will be provided.
[0030] 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 principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A multi-stage sedimentation device for rainwater treatment in a sewage well, comprising a buried well (1), characterized in that: Inside the buried well (1), a sedimentation well (2) is placed. At the front and near the lower side of the sedimentation well (2), a sewage discharge pipe (3) is fixedly arranged. At one end and near the middle of the sedimentation well (2), a drain pipe (4) is fixedly arranged. At the position corresponding to the drain pipe (4) on the inner wall of the sedimentation well (2), an electric gate (5) is fixedly installed. Inside the lower side of the sedimentation well (2), a sedimentation component (6) is arranged. Inside the upper side of the sedimentation well (2), a pretreatment component (7) is arranged. Near one side of the pretreatment component (7) inside the upper side of the sedimentation well (2), a collection component (8) is arranged. The sedimentation component (6) includes two groups of fixed bars (61) fixedly arranged on the inner walls on both sides of the sedimentation well (2). A honeycomb plate (62) is slidably arranged on the outer sides of the two groups of fixed bars (61). Chute openings (63) are formed at the positions corresponding to the two groups of fixed bars (61) on both sides of the honeycomb plate (62). A number of sedimentation pipes (64) are arranged inside the honeycomb plate (62). A fixed pipe (65) is fixedly arranged inside one side of the honeycomb plate (62). Two fixed rods (66) are fixedly arranged at the lower end of the honeycomb plate (62). A float (67) is fixedly arranged at the lower ends of the two fixed rods (66). A cylinder (68) is fixedly arranged at the upper end of the honeycomb plate (62). A convex ring (69) is fixedly arranged at the bottom inside the cylinder (68).
2. The multi-stage sedimentation device for rainwater treatment in a sewage well according to claim 1, characterized in that: The pretreatment component (7) includes a processing shell (71) fixedly arranged inside the upper side of the sedimentation well (2). The lower side of the processing shell (71) is a sedimentation chamber (72). A sewage inlet pipe (73) is fixedly arranged at one side and near the rear side of the processing shell (71). A sewage outlet pipe (74) is fixedly arranged at one side and near the front side of the processing shell (71). A first motor (75) is fixedly arranged at the upper end of the processing shell (71). A rotating rod (76) is fixedly arranged at the lower end of the rotating shaft of the first motor (75). Two groups of rotating blades (77) are fixedly arranged on the outer side of the rotating rod (76). A branch pipe (78) is fixedly arranged at one side and near the lower side of the sedimentation chamber (72). A sediment suction pipe (79) is fixedly arranged at one side of the branch pipe (78). A second motor (710) is fixedly installed on the upper side of the sediment suction pipe (79). A sediment discharge pipe (711) is fixedly arranged at the sewage outlet end of the second motor (710). Two spherical discs (712) are fixedly arranged at the lower end of the rotating rod (76). A return spring (713) is sleeved between the lower side of the rotating rod (76) near the spherical discs (712) and the inner wall of the cylinder (68).
3. The multi-stage sedimentation device for rainwater treatment in a sewage well according to claim 2, characterized in that: The collection component (8) includes two groups of fixed plates (81) fixedly arranged on the inner wall of one side of the sedimentation well (2). One end of the upper group of the two groups of fixed plates (81) is fixedly installed with a third motor (82). The lower end of the rotating shaft of the third motor (82) is fixedly provided with a threaded rod (83). A guide rod (84) is fixedly arranged between the two groups of fixed plates (81) on the side close to the threaded rod (83). A fixed threaded sleeve (85) is movably arranged below the threaded rod (83) and the guide rod (84). One end of the fixed threaded sleeve (85) is fixedly provided with a collection box (86). An interface (87) is opened on one side of the collection box (86). A box door (88) is installed on the upper side of the collection box (86). The lower end of the collection box (86) is fixedly provided with a fixed bracket (89). The lower end of the fixed bracket (89) is fixedly provided with a pressing plate (810).
4. The multi-stage sedimentation device for rainwater treatment in a sewage well according to claim 3, wherein: The sewage discharge pipe (3) and the drain pipe (4) communicate with the inside of the sedimentation well (2). The drain pipe (4) corresponds to the position of the gate of the electric gate (5). A turbidity sensor is arranged at the bottom of the electric gate (5). The fixed strip (61) is engaged with the chute opening (63). The sedimentation pipe (64) is inclined.
5. The multi-stage sedimentation device for rainwater treatment in a sewage well according to claim 2, characterized in that: The sedimentation chamber (72) is arranged in an inverted cone shape. The sewage inlet pipe (73) and the sewage outlet pipe (74) communicate with the inside of the treatment shell (71). The sewage inlet pipe (73) passes through one side of the sedimentation well (2). The rotating rod (76) passes through the bottom of the sedimentation chamber (72) to the inner side position of the cylinder (68). The branch pipe (78) and the sediment suction pipe (79) communicate with the inside of the sedimentation chamber (72).
6. The multi-stage sedimentation device for rainwater treatment in a sewage well according to claim 2, characterized in that: The lower side of the sediment suction pipe (79) passes through the fixed pipe (65) and extends to the bottom position of the sedimentation well (2). The sediment discharge pipe (711) passes through the upper cover plate of the sedimentation well (2). The spherical disk (712) is movably arranged inside the cylinder (68). The return spring (713) is in a compressed state.
7. A multi-stage sedimentation device for rainwater treatment in a sewage well according to claim 3, characterized in that: The threaded rod (83) is in threaded connection with the fixed threaded sleeve (85). The fixed threaded sleeve (85) is slidably arranged on the guide rod (84).
8. The multi-stage sedimentation device for rainwater treatment in a sewage well according to claim 3, characterized in that: The position where the collection box (86) is provided with the interface (87) corresponds to and fits with the sewage outlet pipe (74). The pressing plate (810) presses on the upper end of the honeycomb plate (62).