Single-Motor Pump Assembly for Selective Proportioning
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Solution Overview
Problem
Existing proportioning machines require multiple motors to drive multiple pump bodies, leading to high manufacturing costs.
Innovation Solution
A pump assembly with a single driving motor that uses transmission mechanisms and one-way bearings to alternately operate two pump bodies for solutions and a third pump body for a diluent, reducing the need for multiple motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple motors are disposed to drive multiple pump bodies respectively, then each pump body can be driven independently, but the manufacturing cost increases
Solution Approach 1:
The patent combines multiple pump bodies (first, second, and third pump bodies) into a single integrated assembly that shares common structural components and can be driven by a single motor through a transmission mechanism. This merging approach reduces the total number of motors required while maintaining the ability to operate each pump body independently through the transmission system's selective engagement capability.
Solution Approach 2:
The single motor in the patent is designed to perform multiple functions by driving different pump bodies at different times through the transmission mechanism. The motor serves as a universal driving source that can selectively power the first pump body, second pump body, or third pump body based on operational requirements, thereby eliminating the need for separate dedicated motors for each pump body.
2Ease of manufacture
If a single motor drives multiple pump bodies through transmission mechanisms, then manufacturing cost is reduced, but the device complexity increases
Solution Approach 1:
The transmission mechanism is segmented into distinct functional modules, each responsible for transmitting power to a specific pump body. This segmentation allows for simpler individual transmission paths rather than a single complex integrated system, making the overall mechanism more manageable and easier to manufacture while maintaining the ability to selectively drive different pump bodies.
Solution Approach 2:
The patent introduces transmission mechanisms as intermediary components that facilitate power transmission from the single motor to multiple pump bodies. These intermediaries simplify the direct connection complexity by providing standardized transmission interfaces and pathways, making the system easier to assemble and maintain while reducing the need for complex direct coupling between the motor and each pump body.
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
Reduces manufacturing costs by eliminating the need for multiple motors, while maintaining precise control over the mixing and dispensing of varnish components.
Implementation Method 1
a first one-way bearing, the first chain wheel is installed on the rotating shaft of the second pump body through the first one-way bearing
Implementation Method 2
a chain, the chain is meshed with a motor shaft of the driving motor, the first chain wheel and the second chain wheel are both meshed with the chain
Implementation Method 3
the first synchronous belt wheel and the second synchronous belt wheel are in transmission connection through the synchronous belt
Data Source
AI summary
Provided are a pump assembly and a proportioning machine. The pump assembly includes a driving mechanism, including a driving motor; a first pump body; a second pump body; and a third pump body. The first pump body and the second pump body are in transmission connection, when the driving motor rotates along a first direction, a rotating shaft of the third pump body does not rotate, the driving motor drives a rotating shaft of the second pump body to rotate, the second pump body drives a rotating shaft of the first pump body to rotate, when the driving motor rotates along a second direction, the rotating shafts of the first pump body and the second pump body do not rotate, the driving motor drives the rotating shaft of the third pump body to rotate, and the first direction and the second direction are opposite.