Corrosive Fluid Pump with Integrated Circuits and Polymer Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing volumetric pumps for corrosive fluids face challenges such as complex and time-consuming connections, bulkiness, and corrosion of metallic components when handling aggressive chemicals, leading to potential leaks and damage to actuator members.
Innovation Solution
A pump design featuring a casing made of aluminum alloy with integrated feed and delivery circuits and chemically inert polymeric protection bodies to prevent corrosion, ensuring the actuator members do not come into contact with the corrosive fluid and maintaining the structural integrity of the pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple ducts and manifolds are used to connect the pump to the tank and dispenser, then the pump can process large flows, but the connection becomes complex and time-consuming
Solution Approach 1:
The patent merges multiple ducts and manifolds into a single integrated feed circuit and delivery circuit formed directly on the casing. The feed circuit collects fluid from multiple heads through a single manifold, and the delivery circuit distributes fluid to multiple heads through a single manifold, significantly reducing the number of connections required while maintaining high flow capacity.
Solution Approach 2:
The feed circuit and delivery circuit are designed with multi-functionality, serving multiple heads simultaneously through a single integrated pathway. This universal design allows the pump to maintain high productivity while reducing connection complexity and time.
2Productivity
If multiple ducts and manifolds are extended outside the casing, then the pump can process large flows, but the bulk increases and the pump becomes difficult to use in reduced spaces
Solution Approach 1:
The patent integrates the feed and delivery circuits directly onto the casing, eliminating the need for separate external ducts and manifolds. This merging of functions reduces the overall bulk of the pump while maintaining the capability to process large flows through multiple heads.
Solution Approach 2:
The feed and delivery circuits are nested within the casing structure itself, with the circuits formed directly on the casing surface. This nesting approach allows the pump to maintain high flow capacity while minimizing external protrusions and reducing the overall volume occupied by the pump.
3Strength
If metallic materials are used for the casing and conveyance surfaces, then the pump has good structural strength, but the corrosive fluid causes corrosion and damage over time
Solution Approach 1:
The patent employs a composite structure where the casing and conveyance surfaces are made of corrosion-resistant materials such as chemically inert plastics or coated metals. This composite approach maintains the structural strength needed for pump operation while providing resistance to corrosion from corrosive fluids, thereby improving long-term reliability.
Solution Approach 2:
The patent introduces a protective coating or liner as an intermediary layer between the corrosive fluid and the metallic casing. This intermediary protective layer prevents direct contact between the corrosive fluid and the metallic structure, preserving both the structural strength and corrosion resistance of the pump.
4Productivity
If the conveyance surface is exposed to corrosive fluid, then the pump can efficiently transport the fluid, but the corrosion leads to perforations and potential leakage
Solution Approach 1:
The patent introduces a protective coating or chemically inert material as an intermediary layer on the conveyance surfaces. This intermediary layer allows the fluid to flow efficiently through the conveyance channels while preventing the corrosive fluid from damaging the underlying metallic structure, thus maintaining both productivity and preventing corrosion-related perforations.
Solution Approach 2:
The patent changes the material parameter of the conveyance surfaces from metallic to corrosion-resistant materials or coated surfaces. This parameter change maintains the fluid transport efficiency while eliminating the harmful effect of corrosion, preventing perforations and leakage.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
Pump for pumping corrosive fluids comprising two or more heads (2), each of which provided with a pumping chamber (3), with a suction channel (4) and with a dispensing channel (5), and such suction (4) and dispensing (5) channels are connected to the pumping chamber (3) in order to suction and dispense a corrosive fluid respective into and from the aforesaid pumping chamber (3). The pump also comprises a casing (6) made of metallic material, which carries the heads (2) mounted thereon and is provided with a feed circuit (7), placed in fluid communication with the suction channels (4) of the heads (2), and a delivery circuit (8), placed in fluid communication with the dispensing channels (5) of the heads (2). The feed circuit (7) and the delivery circuit (8) are provided with a first conveyance surface (43) for the corrosive fluid. In addition, the pump comprises a first shaped protection body (9) made of polymeric material, which is molded in a single body directly on top of the first conveyance surface (43).