Conical Treatment Vessel Outlet for Blockage-Free Material Discharge
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Solution Overview
Problem
Treatment vessels with large outlet ends face challenges such as slow mass flow and blockages, limiting efficiency and increasing build height, while smaller outlets hinder access unless the vessel is elevated.
Innovation Solution
A treatment vessel design featuring a conical or frustoconical outlet section with a conical body positioned to maintain flow without increasing height, using a conical body with its base near the transition plane, allowing easy access and efficient discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the outlet end diameter is reduced to improve access, then ease of operation is improved, but mass flow speed decreases and blockages occur
Solution Approach 1:
The patent applies a conical or frustoconical shape to the outlet section instead of a cylindrical shape. This curved tapering geometry smoothly guides the lignocellulosic material from the larger main section diameter to the smaller outlet opening diameter, maintaining flow velocity while enabling access. The conical body with vertex pointing away from the main section creates a streamlined flow path that prevents blockages.
2Ease of operation
If the outlet end diameter is reduced to improve access, then ease of operation is improved, but blockages occur
Solution Approach 1:
The conical or frustoconical outlet section provides a smooth curved transition that prevents material from stagnating or blocking the outlet. The tapering geometry ensures continuous flow toward the outlet opening, maintaining reliability while enabling access.
Solution Approach 2:
The conical body is positioned with its base near the transition plane between the main section and outlet section, creating a preliminary flow guidance structure that directs material smoothly into the outlet section before it reaches the narrow outlet opening, preventing blockages in advance.
3Ease of operation
If the treatment vessel is elevated to provide access to the outlet opening, then ease of operation is improved, but device complexity and build height increase
Solution Approach 1:
Instead of solving the access problem by increasing height (vertical dimension), the patent solves it by changing the horizontal dimension - specifically by tapering the outlet section diameter. This allows the outlet opening to be accessed at a lower height while maintaining a practical diameter for flow, effectively trading horizontal space for vertical space.
4Ease of operation
If a narrow treatment vessel is used to provide access to the outlet opening, then ease of operation is improved, but device complexity and build height increase
Solution Approach 1:
The patent divides the treatment vessel into distinct functional sections: a main section with larger diameter for holding and treating material, and a tapered outlet section for discharge. This segmentation allows each section to be optimized for its specific function - the main section for capacity and the outlet section for access and flow - without requiring the entire vessel to be narrow and complex.
Data Source
AI summary
A treatment vessel for treating lignocellulosic material comprises a main section having a first end and a second end, and an outlet section that is conical or frustoconical and tapers from a first end joined to the second end of the main section towards a second end having an outlet opening. A conical body is arranged within the treatment vessel, the vertex of the conical body pointing away from the main section. The conical body is positioned such that the base thereof is positioned within a perpendicular distance (d) from a transition plane (T) defined by the junction between the first end of the outlet section and the second end of the main section, wherein the perpendicular distance (d) is ¼ or less of the diameter (D) of the main section. A half angle (β) of the conical body is 0.5-20° less, preferably 5-15° less, such as 10° less, than a half angle (α) of the outlet section.