Multi-Point Lubricant Injector With Uniform Piston Pressurization
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Solution Overview
Problem
Conventional lubricant injectors face issues with low pressure leading to ineffective lubricant discharge, high production costs for high-pressure injectors, oil separation, uneven lubricant distribution, and inefficient management of drive-end and non-drive-end injectors, particularly in miniaturized and multi-point applications.
Innovation Solution
A high-pressure-generating multi-point lubricant injector with a single power source that uniformly pressurizes a piston using multiple screw shafts and driven gears, eliminating the need for a separate divide block and allowing for efficient lubricant distribution to multiple injection points, including varying capacities for drive-end and non-drive-end applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high-pressure lubricant injector is used to overcome back pressure and enable multi-point lubrication, then reliability and performance are improved, but production cost increases due to complex pump components and precise control requirements
Solution Approach 1:
The injector is divided into multiple independent injection points with separate pistons and lubricant pathways. Each injection point can operate independently, allowing the system to achieve multi-point lubrication without requiring a complex centralized pump system. This segmentation reduces overall device complexity while maintaining high-pressure capability at each point.
Solution Approach 2:
Multiple injection functions are merged into a single integrated device housing. The injector combines multiple pistons, screw shafts, and lubricant reservoirs into one unified structure that serves multiple bearing points simultaneously. This merging eliminates the need for separate injectors at each location, reducing system complexity while maintaining reliability.
2Device complexity
If a low-pressure lubricant injector is used to reduce production cost and simplify components, then manufacturing cost is reduced, but the injector cannot effectively discharge lubricant when back pressure is applied
Solution Approach 1:
Each injection point is designed with localized high-pressure generation capability through individual pistons and screw shafts. Rather than requiring a complex centralized high-pressure pump, each local injection point generates sufficient pressure independently to overcome back pressure at its specific bearing location, ensuring reliable lubricant discharge without increasing overall system complexity.
3Use of energy by moving object
If a single power source is used to drive multiple screw shafts and pistons, then power consumption is reduced and device complexity is minimized, but uniform pressurization of the piston must be achieved
Solution Approach 1:
The injector accommodates asymmetric lubrication requirements by allowing different injection points to have different lubricant capacities and consumption rates. The single power source drives multiple screw shafts that can operate with different stroke lengths and pressures tailored to each specific bearing's needs, achieving optimal lubrication without uniform constraints while maintaining energy efficiency.
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 reliable and smooth lubricant discharge, reduces power consumption, and extends the lifespan of the injector by preventing piston displacement and buckling, while efficiently managing lubricant supply to multiple points without separate blocks, thus enhancing reliability and reducing waste.
Implementation Method 1
a screw shaft coupled to the nut and configured to lift and lower the piston while being rotated
Implementation Method 2
a motor and a battery for driving the motor mounted in an upper body
Data Source
AI summary
Proposed is a high pressure-generating multi-point lubricant injector that enables smooth discharge of a lubricant by uniformly pressurizing a piston with a single power source, and enables active use in multiple injection points, as well as efficient distribution of the lubricant to a drive end and a non-drive end.