Helical Piston Cutting Valve for Gentle Paste Portioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting valves and portioning units in the food industry face challenges with inefficient cutting profiles and product damage due to axial piston movement, which results in varying portion weights and damage to fibrous or lumpy products, often requiring separate drives for partitioning and discharging operations.
Innovation Solution
A cutting valve with a partitioning piston capable of helical movement combining translational and rotational components, using a single drive, and an axially movable piston bottom that yields to spring force to minimize squeezing action, allowing for a gentle draw cut with two sharp cutting edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an axial drive movement of the piston with cutting edge is used for partitioning, then the partitioning function is achieved, but the cutting profile becomes diffuse and product constituents are damaged due to squeezing action
Solution Approach 1:
The patent applies a helical movement instead of axial movement, creating a curved cutting path that draws the cutting edge through the mass strand in a spiral pattern. This curved trajectory prevents direct squeezing pressure on the product constituents while maintaining effective cutting separation, thereby improving cutting profile precision without compromising the partitioning function
2Ease of operation
If the piston bottom enters into the mass strand concurrently with the cutting edge for discharging, then the discharging function is achieved, but the pressure in the cutting area increases locally strongly causing product damage
Solution Approach 1:
The patent separates the discharging function from the cutting function by providing a dedicated discharge opening at the rear end of the portioning chamber, distinct from the cutting edge location. This segmentation allows the piston bottom to discharge portions through the rear opening without entering the mass strand at the cutting area, eliminating local pressure increases and product damage while maintaining effective discharging
3Reliability
If two separately controlled drives are used for partitioning and discharging operations, then both functions are performed separately, but the device complexity increases
Solution Approach 1:
The patent combines both partitioning and discharging operations into a single helical movement of the piston. The helical trajectory naturally performs cutting at the front end while the rear end discharges through the rear opening, eliminating the need for separate drives while maintaining reliable separate function control through the geometric design of the helical path and distinct openings
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 solution enables precise and gentle cutting of fibrous or lumpy products with consistent portion weights, optimizing the cutting process by distributing cutting work over a longer edge and reducing product damage, while maintaining a simple and compact structure.
Implementation Method 1
an axially movable piston bottom that yields to spring force to minimize squeezing action
Data Source
AI summary
A cutting valve for portioning a paste-like mass, having a partitioning piston which is drivable in a portioning chamber with an inlet relative to the inlet and which comprises a cutting edge which during partitioning is movable to sweep over the inlet, the partitioning piston is drivable in the partitioning process to perform a helical movement with simultaneous translatory and rotatory movement components, so that the cutting edge carries out a draw cut in the mass strand.