Vehicle Filter Drum with Insertable Disc Screen Unit
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Solution Overview
Problem
Mobile drum screens are limited by maximum vehicle dimensions, preventing the separation of materials into three fractions (coarse, medium, and fine), and existing solutions that add a disk screen compromise the feed bunker's function and increase vehicle length.
Innovation Solution
A disk screen is connected to the feed bunker on the opposite side of the screening drum, with a conveyor belt extending below the bunker into the feed area, allowing the feed bunker and disk screen to form a structural unit that can be partially pushed into the screening drum, enabling the use of a larger drum diameter and additional screening without lengthening the vehicle, and allowing for three fractions by reconfiguring the disk screen's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a disk screen is added to the vehicle to enable three-fraction separation, then the screening capability is improved, but the vehicle length exceeds maximum permissible dimensions
Solution Approach 1:
The feed bunker is designed to be insertable into the screening drum, allowing the bunker to nest within the drum during transport. This nesting arrangement reduces the overall vehicle length to within permissible dimensions while maintaining both the screening drum and feed bunker functionality for three-fraction separation when extended to working position
Solution Approach 2:
The feed bunker is designed with movable walls that can pivot between a retracted transport position and an extended working position. This dynamic configuration allows the vehicle to meet length restrictions during transport while providing sufficient space for the disk screen and feed bunker operation during screening work
2Adaptability or versatility
If the disk screen is placed on the feed bunker, then the three-fraction separation is enabled, but the feed bunker loses its intermediate storage function
Solution Approach 1:
The feed bunker is divided into separate functional zones: an upper storage chamber for intermediate material storage and a lower discharge area with the disk screen for active screening. This segmentation allows the bunker to simultaneously maintain its storage function while enabling three-fraction separation through the disk screen positioned in the discharge zone
Solution Approach 2:
The conveyor belt positioned below the feed bunker acts as an intermediary element, transferring material from the disk screen to the screening drum while preserving the feed bunker's storage capacity. The conveyor is integrated into the bunker structure, allowing material flow without compromising the storage chamber's integrity
3Productivity
If the vehicle width is maximized to accommodate larger drum diameter, then the screening efficiency is improved, but no space remains for additional screening devices
Solution Approach 1:
The disk screen is positioned in the longitudinal dimension of the vehicle rather than the lateral dimension, utilizing the lengthwise space created by the insertable feed bunker. This dimensional reconfiguration allows the vehicle to maintain maximum width for efficient drum operation while accommodating the additional disk screen in the longitudinal direction
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for the separation of materials into three fractions without exceeding vehicle dimensions, reducing transport length and enabling efficient operation with minimal conversion, while maintaining the feed bunker's storage function and allowing independent control of the screening effect.
Implementation Method 1
the conveyor belt for the screened-out fraction extends below the feed bunker into the feed area of the screening drum
Implementation Method 2
a disk screen connected to the feed bunker with an associated conveyor belt for the screened-out fraction
Implementation Method 3
the screen drum is arranged on a vehicle together with an upstream feed bunker... separate bulk materials on site, for example into a coarse and a fine fraction
Data Source
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AI summary
A vehicle is described comprising a screening drum (5), a feed hopper (6) upstream of the screening drum (5) and equipped with a discharge conveyor (11), and a disc screen (10) connected to the feed hopper (6) with an associated conveyor belt (12) for the screened fraction. To create advantageous design conditions, it is proposed that the disc screen (10) be connected to the feed hopper (6) on the side opposite the screening drum (5), that the conveyor belt (12) for the screened fraction extend below the feed hopper (6) into the feed area (13) of the screening drum (5), and that the feed hopper (6) with the connected disc screen (10) and the associated conveyor belt (12) form a unit (14) that can be partially inserted into the screening drum (5).