Screw Conveyor Arrangement for Rapid Sewer Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sewer and street cleaning devices with screw conveyor clearing devices experience inefficiencies in emptying mineral residues due to material falling through gaps between screw flights when the swivel frame is pivoted, leading to prolonged emptying times and reduced operational effectiveness.
Innovation Solution
The implementation of two symmetrically arranged screw conveyors that create a gap along the container wall, ensuring that material falling through one conveyor is caught and transported by the other, enhancing radial direction transport and facilitating quicker emptying, with the screw conveyors being coiled in opposite directions and driven oppositely to support each other effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single screw conveyor is used for emptying the dirt collection container, then the device structure is simple, but material falls through the gaps between screw flights during pivoting, resulting in prolonged emptying time and incomplete emptying
Solution Approach 1:
The patent combines two screw conveyors working together in a coordinated manner. The first screw conveyor transports material upward along the container wall, while the second screw conveyor captures and transports material that falls through the gaps of the first conveyor. This merging of two conveying systems ensures continuous and complete material removal, eliminating the time loss associated with incomplete emptying in single-conveyor systems.
Solution Approach 2:
The second screw conveyor acts as an intermediary that catches and redirects material falling through the gaps of the first conveyor. This intermediary component prevents material loss and ensures that all material is eventually transported out of the container, thereby reducing the total emptying time without requiring a fundamentally different conveying mechanism.
2Ease of operation
If the pivoting frame is raised to empty the container, then material can be discharged, but material falls through the gaps between screw flights, requiring repeated operations and extending downtime
Solution Approach 1:
By merging two screw conveyors where the second conveyor serves as a backup and supplement to the first, the system achieves more reliable and complete emptying. The coordinated operation of both conveyors ensures that material is captured even when falling through gaps, eliminating the need for repeated pivoting operations and ensuring complete emptying in a single operational cycle.
Solution Approach 2:
The second screw conveyor is positioned and configured to anticipate and capture material that falls through the gaps of the first conveyor. This preparatory arrangement ensures that no material is lost during the pivoting operation, providing beforehand cushioning against the potential failure of the first conveyor to capture all material.
3Device complexity
If a single screw conveyor operates alone, then the device complexity is low, but material is not fully retained during transport, leading to loss of substance
Solution Approach 1:
The patent merges two screw conveyors into a coordinated system where the first conveyor performs primary material transport and the second conveyor provides supplementary capture and transport. This combination significantly improves material retention by catching material that would otherwise fall through gaps, with the added complexity being justified by the substantial reduction in material loss.
Solution Approach 2:
The second screw conveyor serves as an intermediary safety net that captures material escaping from the first conveyor. This intermediary component ensures that no material is lost during the emptying process, providing a backup transport path that guarantees complete material retention.
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 ensures rapid and complete emptying of the dirt disposal container, reducing downtime and improving cost-effectiveness by preventing material loss and ensuring reliable clearing in both pivoting directions.
Implementation Method 1
a screw conveyor assembly extending in the longitudinal direction of the dirt collection container and equipped with a rotary drive device
Implementation Method 2
mounted on a pivoting frame pivotably arranged about an axis extending in the longitudinal direction of the container and pivotable by means of a pivoting drive
Data Source
Figure 1~2
AI summary
In a sewer and/or street cleaning device with at least one barrel-shaped dirt collection container (1b) for receiving and transporting mineral residues generated during sewer and/or street cleaning, wherein an associated emptying device is provided for emptying the dirt collection container (1b), which has a screw conveyor arrangement extending in the longitudinal direction of the dirt collection container (1b) and equipped with a rotary drive device, which is mounted on a pivoting frame (6) pivotable about an axis extending in the longitudinal direction of the container and pivotable by means of a pivoting drive (7), by means of which the screw conveyor arrangement can be deflected on both sides along the container wall (5) relative to a central position associated with the bottom of the container, a rapid emptying of the dirt collection container (1b) can be achieved.that the screw conveyor arrangement of the clearing device has two screw conveyors (3a, 3b) mounted symmetrically to a central longitudinal plane of the swivel frame (6), which define a gap (4) between them and cooperate to transport the material to be cleared along the inside of the container wall (5).