Fluidically Powered Linear Motion Mixer for Vessel Weight Distribution
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Solution Overview
Problem
Existing linear motion mixers for liquids face challenges with high capital and operational costs, maintenance requirements, weight distribution issues, and inefficient energy consumption, particularly when retrofitted onto vessels not designed to bear significant central weight loading.
Innovation Solution
A fluidically powered linear motion mixer with a reciprocating drive assembly that repositions components away from the central area of the mixing vessel, utilizing a hydraulically powered actuator and control system to reduce weight and maintenance needs, and eliminate the need for continuous lubrication, while improving mixing performance and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a Scotch yoke mechanism is used to convert rotary motion to reciprocating motion, then linear motion mixing is achieved, but the device becomes heavy and complex with high maintenance requirements
Solution Approach 1:
The patent replaces the complex mechanical Scotch yoke mechanism with a fluidically powered linear motion mixer. The drive assembly uses fluid pressure differentials to directly generate linear reciprocating motion of the mixing shaft, eliminating crank assemblies, flywheels, and yoke mechanisms. This substitution of mechanical systems with fluidic actuation resolves the contradiction by maintaining linear motion mixing capability while dramatically reducing device complexity and maintenance requirements.
2Ease of operation
If a Scotch yoke mechanism is used to convert rotary motion to reciprocating motion, then linear motion mixing is achieved, but capital costs and operational costs increase
Solution Approach 1:
The patent eliminates expensive mechanical components such as crank assemblies, flywheels, and precision yoke mechanisms by using a fluidically powered drive assembly. The fluidic actuator with pressure-controlled reciprocating motion reduces manufacturing complexity and capital costs while maintaining the essential linear motion mixing capability, directly addressing the cost contradiction.
3Productivity
If components are positioned in the central area of the mixing vessel, then mixing performance is optimized, but weight distribution becomes problematic for vessels not designed to bear central loading
Solution Approach 1:
The patent segments the mixing system into a lightweight mixing head that operates in the central area for optimal mixing performance, and a fluidically powered drive assembly that can be positioned remotely or distributed. The mixing shaft and mixing head remain centrally positioned to maintain effective mixing action, while the heavy drive components are separated and positioned away from the vessel center, resolving the weight distribution problem without sacrificing mixing performance.
4Ease of operation
If traditional mechanical drive assemblies are used, then reciprocating motion is achieved, but continuous lubrication and maintenance are required
Solution Approach 1:
The patent replaces mechanical drive assemblies with sliding surfaces requiring lubrication with a fluidically powered actuator that uses pressurized fluid to generate reciprocating motion. The fluidic system eliminates mechanical contacts between moving parts, removing the need for continuous lubrication and significantly reducing maintenance requirements while maintaining reliable reciprocating motion capability.
Data Source
AI summary
A reciprocating mixer for mixing liquids comprises a mixing shaft supporting a mixing head. A reciprocating drive assembly is connectable to the shaft and comprises a reciprocating fluidically powered actuator having a vertically reciprocating drive shaft coupled to the mixing shaft, a first fluidic input and a second fluidic input. A fluidic control valve is connected to the first and second fluidic inputs of the actuator. A fluidic pump has a fluidic output connected to the fluidic input of the control valve. A control unit has a communication interface connected to the communication port of the fluidic control valve and the control input the fluidic pump. In use, the fluidic pump and the fluidic control valve are operated by the control unit to provide for a downward motion cycle portion and an upward motion cycle portion that impart the vertically reciprocating movement to the mixing head.