Portable assembly type reverse filtration well

CN224395495UActive Publication Date: 2026-06-23JIUJIANG WATER CONSERVANCY & ELECTRIC POWER PLANNING & DESIGN INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIUJIANG WATER CONSERVANCY & ELECTRIC POWER PLANNING & DESIGN INST
Filing Date
2025-07-30
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Traditional cofferdam construction is intensive, time-consuming, difficult to source materials locally, challenging to regulate water levels, and has poor water-stopping effect, making it difficult to quickly and effectively deal with piping risks.

Method used

The portable, prefabricated reverse filter well structure consists of multiple columns, connecting crossbars, and double-layer high-strength waterproof fabric to form a well. The well is equipped with reverse filter material and drainage pipes. The columns and connecting crossbars are connected by threaded sections and locking nuts. The outer layer of waterproof fabric is buried in the water-stop ditch and filled with clay, enabling rapid construction.

Benefits of technology

It enables rapid and efficient construction of cofferdams, improves construction efficiency, enhances water-stopping effect, reduces the water level difference between upstream and downstream, and prevents soil particle loss.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224395495U_ABST
    Figure CN224395495U_ABST
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Abstract

The application discloses a portable assembly type reverse filtration well, which further comprises a plurality of columns, the columns being arranged on the ground at intervals; a plurality of connecting cross bars, the connecting cross bars being arranged between two adjacent columns; double-layer high-strength waterproof cloth, the double-layer high-strength waterproof cloth being arranged on the columns and surrounding the columns to form a well; and reverse filtration material, the reverse filtration material being arranged in the well; and a drainage pipe, the drainage pipe being arranged on the double-layer high-strength waterproof cloth. The double-layer high-strength waterproof cloth is sleeved on the columns, and two adjacent columns are connected through the connecting cross bars; the reverse filtration material is laid in the well; at this time, water seeping from a piping point is filtered by the reverse filtration material, and the water is discharged from the drainage pipe, so that soil particles are prevented from being carried out by the water. The reverse filtration well can also raise a downstream water level and reduce a water level difference between an upstream and a downstream. The double-layer high-strength waterproof cloth, the columns and the connecting cross bars have small volumes before being assembled, are convenient to store and transport, and the assembly steps of the reverse filtration well are simple, so that the well can be efficiently constructed.
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