Perforated Cylinder Thick Matter Pump with Sieve Press
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Solution Overview
Problem
Existing devices for conveying thick matter, such as biogenic wastes, fail to effectively separate foreign substances from the material flow before the processing step, leading to contamination and inefficient disposal methods.
Innovation Solution
A device with a perforated delivery cylinder that separates foreign substances from useful substances through perforations in the lateral wall, utilizing a combination of a pump, sieve, and press functions, where the delivery piston compresses thick matter and the closure member controls the flow of substances, allowing liquid components to pass through while forcing solid components into a delivery line for separate processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a thick matter pump is used to convey biogenic wastes containing foreign substances, then the material can be transported, but the foreign substances remain mixed in the material flow and cannot be separated before processing
Solution Approach 1:
The delivery cylinder is divided into functionally distinct zones: a compression zone with perforated walls for liquid separation, and a discharge zone for solid material ejection. This segmentation allows different separation mechanisms to operate simultaneously within a single continuous pumping cycle, resolving the contradiction between transport efficiency and separation capability.
Solution Approach 2:
The invention merges three functions (pumping, pressing, and sieving) into a single integrated device. The delivery cylinder simultaneously performs material transport, compression for liquid extraction, and solid particle discharge, eliminating the need for separate separation equipment and maintaining high productivity while adding separation capability.
2Ease of operation
If foreign substances are shredded to particles less than 10 mm for transport, then the material can be conveyed by the pump, but the foreign substances are still contained in the material flow and require end-of-process removal
Solution Approach 1:
The device performs separation action during the conveying process itself, rather than as a preliminary or post-processing step. The perforated cylinder walls continuously extract liquid components throughout material transport, achieving separation 'in-transit' and eliminating delays associated with end-of-process removal operations.
Solution Approach 2:
The separation process operates continuously throughout the entire material conveyance cycle. As the delivery piston moves material through the perforated cylinder, liquid components are continuously extracted through the perforations, maintaining uninterrupted separation action without stopping or pausing the pumping operation.
3Ease of manufacture
If the delivery cylinder is perforated to separate liquid components, then foreign substances can be separated during conveying, but the device complexity increases
Solution Approach 1:
The perforated delivery cylinder serves multiple functions simultaneously: it acts as the pumping chamber, the compression press, the separation sieve, and the discharge control mechanism. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in overall device complexity despite adding separation capability.
Solution Approach 2:
The use of a perforated cylinder wall creates a porous barrier that passively separates liquid from solid components based on their physical properties. The perforations provide inherent separation functionality without requiring complex mechanical screening mechanisms, motors, or moving parts, thus minimizing the increase in device complexity.
4Productivity
If the closure member is positioned at the outlet side to control flow, then separation can be achieved, but the risk of clogging increases
Solution Approach 1:
The closure member is positioned and designed to open dynamically under pressure buildup from the delivery piston. This dynamic positioning allows the system to maintain separation efficiency when closed, while automatically preventing clogging by opening when pressure differential indicates potential blockage, thus resolving the contradiction between separation efficiency and clogging resistance.
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
Effectively separates foreign substances from useful substances during the conveying process, enabling efficient processing and reducing the need for subsequent manual separation or burning, by utilizing a control unit to manage the movement of the slide and closure member, ensuring reliable operation and preventing clogging.
Implementation Method 1
the thick matter is first compressed in the delivery cylinder before it is forced into the delivery line
Implementation Method 2
the delivery cylinder is perforated at least over a portion of its lateral wall... which is configured to separate, through the perforations, at least one of the mixture components from the mixture of substances
Data Source
AI summary
The invention relates to a device for delivering thick matter. The device comprises: a delivery cylinder (20); a material feed space (16), which is connected to the delivery cylinder (20) on the entry side; a delivery line (18), which is connected to the delivery cylinder (20) on the exit side; a delivery plunger (12), which can be displaced to-and-fro through the material feed space (16) and the delivery cylinder (20), and; a closing element (22), which is placed at the exit location of the delivery cylinder (20) or inside the delivery line (18) and which can be displaced between an open position and a closing position. In order to be able to separate foreign substances, which are contained in the flow of thick matter, out of the flow of thick matter before the actual processing step for the useful substances, the invention provides that the delivery cylinder (20) is perforated at least over a portion of its cylinder jacket (24). These measures make it possible to obtain a device that combines the features of a thick matter pump, a sieve and a press.