A device for reducing turbidity of farmland drainage water and a working method thereof

By designing an automatically adjustable farmland drainage device, utilizing the buoyancy of a floating body and a rotating inlet, combined with rotating blades and a drift-blocking grid, the device achieves efficient sedimentation of suspended solids, solving the problem of suspended solids removal in farmland drainage systems, improving the transparency of river and lake water, and reducing costs.

CN121087941BActive Publication Date: 2026-07-21SHANGHAI INVESTIGATION DESIGN & RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI INVESTIGATION DESIGN & RES INST CO LTD
Filing Date
2025-09-15
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing farmland drainage systems are unable to efficiently remove suspended solids, leading to a decrease in the transparency of rivers and lakes. Furthermore, traditional methods are land-intensive, costly, and difficult to adapt to changes in water levels.

Method used

Design a farmland drainage and turbidity reduction device, including an adjustable drainage head, a drainage sedimentation tank and a drainage channel. The device automatically adjusts the depth of the rotating inlet using the buoyancy of a float, and combines rotating blades and a float-blocking grid to achieve automatic sedimentation and separation of suspended solids.

Benefits of technology

It effectively removes suspended solids from water, improves the transparency of rivers and lakes, has a simple structure, occupies little space, requires no external power, reduces operating costs and maintenance difficulty, adapts to water level changes, and prevents blockages.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a farmland drainage turbidity reduction device and a working method thereof, and relates to the field of farmland drainage. The farmland drainage turbidity reduction device comprises a water level adjustable drainage head, a drainage sedimentation tank and a drainage channel. The water level adjustable drainage head comprises a water collecting pipe, a lifting sleeve pipe, a float and a rotating water collecting opening. The farmland drainage is first collected through the rotating water collecting opening, then enters the drainage sedimentation tank for sedimentation, and finally the clean water enters the drainage channel through the drainage pipe. The suspended solids in the water can be effectively removed, the water turbidity is reduced, and the transparency of the river and lake water body is improved. The rotating water collecting opening can adapt to the water level change, the surface clean water is always collected, and the sedimentation efficiency is improved through the balance between the buoyancy of the float in the water and the sum of the gravity of the lifting sleeve pipe, the rotating water collecting opening and the float and the moving friction. The device does not need external power driving, and the operation cost and the maintenance difficulty are reduced.
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