Rising pipe separator
The riser tube system with a helical current and adjustable impeller effectively addresses the inefficiencies of existing sifters by achieving efficient granule separation with low energy consumption and costs, while allowing for adaptable separation performance.
EP3914399B1Active Publication Date: 2025-03-19KHD HUMBOLDT WEDAG GMBH
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Patent Information
- Application Number
- EP2020701551
- Authority / Receiving Office
- EP · EP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-01-25
- Filing Date
- 2020-01-17
- Publication Date
- 2025-03-19
- Estimated Expiration
- 2040-01-17
AI Technical Summary
Technical Problem
Existing sifters for pneumatic transport of granules are either maintenance-intensive, energy-consuming, or require a minimum height, which increases energy costs and installation complexity.
Method used
A riser tube with a vertical funding component and a swirling device that creates a helical current, utilizing a ring gap between the riser and dive tubes to separate granules by grain size, with adjustable impeller height and angle for optimized separation.
Benefits of technology
Achieves efficient separation of granules into different grain size fractions with low pressure loss and reduced manufacturing and installation costs, while allowing for adjustable separation performance based on grain size distribution.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a rising pipe separator (1), having a rising pipe (5) for pneumatically transporting granular material (15) suspended in conveying air (10), wherein the rising pipe (5) has a vertical conveying direction component, a swirler (20) which is arranged in the rising pipe (5) and which imparts a swirl to the conveying air (10), and an immersion pipe (25) which is arranged above the swirler (20) and which extends the air path for the conveying air (10), wherein an annular gap (30) is provided between the rising pipe (5) and the immersion pipe (25), and coarse-grained material (35) is separated from the conveying air (10) flowing into the immersion pipe (25) by means of the annular gap, said coarse-grained material being centrifuged outwards in a radial direction with respect to the conveying direction of the conveying air (10) by means of the swirl of the conveying air (10). The invention also relates to a circular grinding system which has such a separator (1).
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