Tofu Press with Foldable Plate and Spring Assembly
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Solution Overview
Problem
Conventional tofu dehydration methods result in non-uniform pressure application, leading to inconsistent tofu density and a risk of cracking, and are inconvenient for handling and processing.
Innovation Solution
A tofu press with a foldable plate, spring assembly, and adjustable pressure mechanism, including a compression spring, rotary knob, and snap joint, allowing for uniform pressure adjustment and easy handling of tofu.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a heavy object is placed on tofu wrapped in gauze for dehydration, then dehydration can be achieved, but the applied force is not uniform and the magnitude is not controllable
Solution Approach 1:
The pressing force is segmented and distributed through multiple pressing plates (first pressing plate, second pressing plate) that contact different surfaces of the tofu simultaneously. This segmentation ensures uniform force distribution across the tofu structure, preventing localized deformation and cracking while achieving effective dehydration.
Solution Approach 2:
The patent employs adjustable pressing plates with variable areas and a controllable pressing mechanism that allows the magnitude of pressing force to be adjusted. By changing the pressing parameters (force magnitude, distribution area), the system achieves both effective dehydration and uniform tofu density without cracking.
2Productivity
If tofu is taken out and placed into a container manually, then the dehydration process can be completed, but the process is not convenient and increases the risk of damaging the tofu
Solution Approach 1:
The pressing mechanism is integrated with the container structure, forming an unified dehydration device. The pressing plates, spring assembly, and container work together as a complete system, eliminating the need for separate handling steps. Tofu remains in the container throughout the entire dehydration process, preventing damage from taking and placing operations.
Solution Approach 2:
The device enables self-contained dehydration operation where the container serves multiple functions: holding tofu, providing pressing force through integrated springs, and collecting pressed water. This self-service design eliminates the need for external handling equipment or manual transfer operations, improving both convenience and safety.
3Device complexity
If a fixed pressing mechanism is used, then the structure is simple, but the applied pressure cannot be adjusted according to tofu size
Solution Approach 1:
The pressing mechanism transitions from a fixed structure to a dynamic, adjustable system. Spring assemblies with adjustable pre-compression and variable-area pressing plates enable the pressing force and contact area to be adapted to different tofu sizes. This dynamic capability is achieved through simple structural modifications rather than complex mechanisms.
Solution Approach 2:
The pressing mechanism is designed with universal adaptability to handle different tofu sizes and shapes. By combining adjustable spring pre-compression with variable-area pressing plates, a single device can effectively press various tofu specifications, eliminating the need for multiple specialized presses while maintaining structural simplicity.
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
Ensures uniform dehydration pressure, prevents cracking, and facilitates convenient handling and moisture storage, making it suitable for various food materials beyond tofu.
Implementation Method 1
a bottom end of the spring assembly is configured to press the pressing plate
Implementation Method 2
the spring assembly includes a compression spring, a spring sleeve, a male-threaded nut, and a rotary knob
Data Source
AI summary
A tofu press includes: an open container, a foldable plate, a pressing plate, a spring assembly, and an end cover, where the foldable plate is configured to be placed at a bottom of the open container, the foldable plate includes a bottom plate and lateral plates disposed at two sides of the bottom plate, the lateral plates are perpendicular to and connected to the bottom plate, the pressing plate is configured to cover and press a top of the bottom plate, a bottom end of the spring assembly is configured to press the pressing plate, and the spring assembly is fixedly connected to the end cover; and the pressing plate, the lateral plates, the bottom plate, and two faces of the open container form a compression operating area. The tofu press ensures uniform pressing at the time of pressing a food material to dehydrate.