Pilot-Operated Pulse Valve Layout for Higher Dust-Cleaning Flow
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Solution Overview
Problem
Existing pulse valve assemblies in dust collectors have inefficiencies due to tortuous fluid paths, which affect the cleaning efficacy and flow rate of dust removal processes.
Innovation Solution
A pulse valve assembly design featuring a cylindrical main valve body with axially extending inlet and radially inwardly located outlet ports, along with a pilot valve system that includes normally closed and open passages to efficiently move the main valve spool between closed and open positions, reducing fluid path tortuosity and enhancing flow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional pulse valve assemblies are used, then dust collection function is provided, but fluid path tortuosity reduces flow efficiency and cleaning efficacy
Solution Approach 1:
The patent repositions outlet ports from axial to radial orientation, changing the spatial dimension of fluid discharge. This dimensional change creates a more direct flow path from inlet to outlet, reducing tortuosity and improving flow efficiency without increasing device complexity
Solution Approach 2:
The valve body is segmented into multiple independently positioned inlet and outlet ports arranged circumferentially. This segmentation allows optimization of each port's position to minimize flow path length and tortuosity, enabling higher flow rates while maintaining a compact valve structure
2Ease of operation
If pilot valve system is added to control main valve spool, then valve operation control is improved, but device complexity increases
Solution Approach 1:
A pilot valve is introduced as an intermediary control element that uses a small controlled aperture to regulate pressure in the spool chamber, thereby controlling the main valve spool position. This intermediary approach enables precise valve operation control while keeping the main valve structure relatively simple
Solution Approach 2:
The patent uses pneumatic pressure control through the pilot valve to actuate the main valve spool. By controlling air pressure in the spool chamber, the system achieves easy and reliable valve operation without complex mechanical linkages, improving ease of operation while managing structural complexity
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 results in a higher-flow pulse valve with a less tortuous path, improving the efficiency of dust removal and cleaning processes by allowing increased fluid volume and flow rates through the valve assembly.
Implementation Method 1
pressurizes the first pressure chamber and depressurizes the second pressure chamber to move the main valve spool to the open position
Implementation Method 2
main valve member configured to block fluid flow between the inlet port and the outlet port when the main valve spool is in the closed position and permit fluid flow from the inlet port to the outlet port when the main valve spool is in the open position
Implementation Method 3
provide a pulse or burst of high velocity fluid flow (e.g., air), which creates a pressure wave that acts on the one or more filter elements
Data Source
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AI summary
A pulse valve assembly is disclosed. The pulse valve comprises: a main valve comprising a main valve body, a main valve bore extending within the main valve body, and a main valve spool slidingly disposed in the main valve bore for movement between a closed position and an open position; and a pilot valve which is configured to selectively move the main valve spool between the closed position and the open position.