Constant Flow Pump Cam-Piston Assembly for Stable Liquid Delivery
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Solution Overview
Problem
Conventional fluid conveying equipment, including centrifugal pumps and diaphragm pumps, struggle with maintaining a stable constant flow, are prone to wear, have complex control systems, and high maintenance complexity, which affects their performance and market competitiveness, especially in applications requiring precise flow control and cost sensitivity.
Innovation Solution
A constant flow pump design featuring a drive motor connected to a cam shaft mechanism with eccentric cams, piston mechanisms, and one-way valves, integrated with a liquid inlet and outlet mechanism, allowing for stable and precise liquid conveyance, and a flexible maintenance design that simplifies assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fluid conveying equipment (centrifugal pumps and diaphragm pumps) is used, then the structure is simple and cost is low, but the flow stability is poor and wear occurs after long-term operation
Solution Approach 1:
The patent replaces complex electronic control systems with a purely mechanical constant flow control mechanism. The constant flow control valve uses a balance piston, balance chamber, and elastic component to automatically regulate flow through pressure balance, eliminating the need for electronic sensors, controllers, and power sources while maintaining stable flow delivery.
Solution Approach 2:
The constant flow control valve operates autonomously using the fluid's own pressure to regulate flow. The balance piston responds to pressure changes in the balance chamber, and the elastic component provides automatic restoration, creating a self-regulating system that requires no external control input or power source.
2Manufacturing precision
If constant flow pumps with mechanical or electronic control are used to guarantee flow consistency, then the flow precision is improved, but the control system becomes complex and costly
Solution Approach 1:
The patent replaces complex electronic control systems with a purely mechanical constant flow control mechanism. The constant flow control valve uses a balance piston, balance chamber, and elastic component to automatically regulate flow through pressure balance, eliminating the need for electronic sensors, controllers, and power sources while maintaining stable flow delivery.
Solution Approach 2:
The patent creates a simplified mechanical model of flow control that replicates the function of complex electronic systems. The balance piston and balance chamber system copies the pressure-regulation function of electronic controllers but implements it through passive mechanical means, providing the same flow precision without electronic complexity.
3Reliability
If complex control systems are implemented in constant flow pumps, then the flow stability is improved, but the manufacturing cost increases and market competitiveness decreases
Solution Approach 1:
The patent employs simple, inexpensive mechanical components such as a balance piston, elastic component, and valve structure that can be manufactured at low cost. These components are designed to be simple enough to produce economically while still achieving the desired flow stability, making the pump competitive in cost-sensitive markets.
Solution Approach 2:
The patent replaces complex electronic control systems with a purely mechanical constant flow control mechanism. The constant flow control valve uses a balance piston, balance chamber, and elastic component to automatically regulate flow through pressure balance, eliminating the need for electronic sensors, controllers, and power sources while maintaining stable flow delivery.
4Ease of repair
If conventional pumps are used, then the device structure is simple, but the maintenance complexity is high and downtime is increased
Solution Approach 1:
The pump is divided into modular components including the constant flow control valve assembly, drive mechanism, and pump chamber that can be independently accessed and maintained. The valve assembly with its balance piston and elastic component can be serviced separately from other pump components, reducing maintenance complexity and downtime.
5Ease of operation
If the cam shaft mechanism and piston mechanisms are designed for easy maintenance, then the assembly and disassembly is simplified, but the structural complexity increases
Solution Approach 1:
The drive mechanism is designed as a modular assembly with the cam shaft, eccentric cams, and piston mechanisms that can be independently removed and serviced. This segmentation allows maintenance personnel to access and replace wear-prone components without disassembling the entire pump, simplifying maintenance operations.
Solution Approach 2:
The constant flow control valve and drive mechanism are designed to be extractable as separate assemblies from the pump body. This extraction capability allows these components to be maintained, repaired, or replaced independently, reducing maintenance complexity and downtime despite the internal mechanical complexity of these subsystems.
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
The design ensures stable and precise liquid conveyance, reduces wear, simplifies assembly and maintenance, and minimizes downtime, enhancing the pump's performance and market competitiveness.
Implementation Method 1
one-way valves are fixedly mounted at an equal or unequal interval in the liquid storage tank
Implementation Method 2
a cam shaft mechanism is movably mounted in the constant flow pump case, a top of the cam shaft mechanism is fixedly connected to a bottom output end of the drive motor through the coupling
Implementation Method 3
each of the eccentric cams of the cam shaft mechanism
Implementation Method 4
a piston mechanism is movably mounted on an outer side of the cam shaft mechanism, the piston mechanism coats the outer side of the cam shaft mechanism
Data Source
AI summary
Disclosed is a constant flow pump, including a constant flow pump case. A motor support base is fixedly mounted at a top of the constant flow pump case, A drive motor is fixedly mounted at a top of the motor support base. An output end of the drive motor penetrates through the motor support base. A coupling is arranged in the motor support base. A linkage rod is driven by an adjusting hand wheel to enable a connecting plate to move internally. A limiting bump is separated from a slot. A butting seat can be extracted. A rotating shaft and an eccentric cam are detached rapidly. During mounting, the butting seat with a new component is inserted, the limiting bump is in contact with the slot, the adjusting hand wheel is loosened, and a limiting spring enables the bump to be clamped into the slot to accomplish clamping.