Rotatable Flow Restrictor for In-Place Orifice Flushing
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Solution Overview
Problem
Conventional fluid flow restrictors in dispensing systems often become clogged, requiring disassembly for cleaning, which is time-consuming and disrupts production.
Innovation Solution
A fluid flow restrictor with a rotatable body and a housing that allows the restricting orifice to be oriented for either fluid flow restriction or flushing without disassembly, using a handle to transition between orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional flow restrictor with a fixed orifice is used, then the pressure reduction function is achieved, but the device becomes clogged requiring disassembly for cleaning
Solution Approach 1:
The flow restrictor employs a rotatable body that can be rotated between a first orientation (for normal fluid flow restriction) and a second orientation (for flushing/cleaning). This dynamic reconfiguration allows the same component to serve multiple functions: maintaining pressure reduction during operation and enabling easy cleaning by rotating to align the orifice with the housing outlet for flush access, without requiring disassembly.
2Ease of operation
If the flow restrictor is disassembled for cleaning, then the clog is removed, but production downtime increases
Solution Approach 1:
The rotatable body enables rapid reconfiguration from service mode to cleaning mode without disassembly. The operator simply rotates the body to the second orientation to access the orifice for flushing, significantly reducing cleaning time and production downtime compared to conventional disassembly methods.
Solution Approach 2:
The design allows the flow restrictor to be self-serviced through rotation and flushing operations performed in-place, eliminating the need for complex disassembly procedures and enabling quick maintenance during production cycles.
3Stress or pressure
If a smaller orifice is used for pressure reduction, then the pressure control function is improved, but the device is more prone to clogging
Solution Approach 1:
The rotatable body with smaller orifice provides effective pressure reduction during normal operation. When clogging occurs, rotating to the second orientation enables thorough flushing of the smaller orifice, clearing debris and restoring flow. This dynamic access capability makes even small orifices resistant to permanent clogging.
Data Source
AI summary
In one example, a fluid flow restrictor has a housing outlet offset from a housing inlet along a fluid flow direction so as to define a channel therebetween. A rotatable body that is disposed in the channel defines a bore that extends entirely therethrough such that the bore defines a bore inlet and a bore outlet. The flow restrictor has an interior surface disposed in the bore that defines an orifice having a cross-sectional dimension that is less than a cross-sectional dimension of the channel such that the orifice can restrict a flow of fluid as the fluid flows between the housing inlet and outlet. The rotatable body is rotatable between 1) a first orientation, where the bore outlet is offset from the bore inlet along the fluid flow direction, and 2) a second orientation, where the bore inlet is offset from the bore outlet along the fluid flow direction.