Filter Press Heating Element with Partial Attachment
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Solution Overview
Problem
Existing heating elements for filter presses face challenges in secure attachment and sealing due to thermal expansion differences between materials, leading to warping, malfunctions, and leakages.
Innovation Solution
A heating element with a heating plate attached to a base in a continuous partial area, allowing independent thermal expansion, and using a central borehole or corner borehole for attachment, eliminating the need for perimeter fasteners and enabling secure sealing through the filter press's clamping force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the heating plate is attached to the base along the entire perimeter, then secure attachment and sealing are achieved, but thermal expansion differences cause warping and fastener loosening
Solution Approach 1:
The attachment area is segmented into a continuous partial area (where heating plate is attached to base) and external areas (where heating plate is free to expand). This segmentation allows the heating plate to expand independently in external areas while maintaining secure attachment and sealing in the continuous partial area, resolving the contradiction between sealing reliability and dimensional stability.
2Strength
If fasteners are used to secure the heating plate to the base, then attachment strength is improved, but thermal alternation causes fastener malfunction over time
Solution Approach 1:
The fasteners are extracted from the perimeter areas where they are subject to thermal alternation and loosening. Instead, the heating plate is attached to the base in a continuous partial area that extends into the internal area, eliminating the need for perimeter fasteners and their associated reliability problems while maintaining attachment strength.
3Stability of the object's composition
If the heating plate is freely attached to allow thermal expansion, then warping is prevented, but sealing reliability deteriorates
Solution Approach 1:
Different areas of the heating plate have different attachment characteristics: the continuous partial area is attached to the base to ensure sealing, while the external areas are free to expand thermally. This local differentiation resolves the contradiction by providing both sealing reliability and thermal expansion freedom in their respective locations.
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 design ensures leak-tightness and prevents malfunctions by allowing independent expansion of the heating plate and base, reducing the risk of warping and loosening fasteners, and providing a larger heating surface for effective drying.
Implementation Method 1
at least one heating plate (60, 80) made from a heat-conducting material
Implementation Method 2
the minimally one heating plate (60, 80) is thus in extensive areas, at least also in one, multiple or even all external areas of the plane not joined to the base
Data Source
AI summary
The invention relates to a heating element for a filter press, that can be supplied with a fluid heating medium and comprises at least one heating plate consisting of a heat-conducting material and extending essentially over a plane. Said heating plate is fixed to a base body of the heating element, exclusively in a continuous partial region, the surface of the continuous partial region being smaller than the remaining surface of the heating plate. The invention also relates to a heating element for a filter press, comprising two heating plates which are interconnected by means of spacers, outside the lateral expansion of the base body. The entire base body can be freely displaced between the heating plates, in relation thereto, at least in such a way that a thermal expansion of the heating plates and a different thermal expansion of the base body can take place.