Pilot Piston Pulse Jet Valve Without Bleed Hole Clogging
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Solution Overview
Problem
Conventional piston operated pulse jet solenoid valves suffer from issues such as higher response time, higher air consumption, power consumption, valve malfunction, and malfunction due to bleed hole blockage, limited temperature range, and slow operation due to the use of a pilot diaphragm.
Innovation Solution
A piston operated pulse jet valve design that replaces the pilot diaphragm with a pilot piston, featuring a solenoid-operated valve to control the valve seat, a larger exhaust port, and no bleed hole, allowing for faster operation and reduced air consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a pilot diaphragm is used in conventional piston operated pulse jet solenoid valves, then the valve can control the pulse jet, but the response time increases and operation becomes sluggish
Solution Approach 1:
The patent removes the pilot diaphragm component from the valve assembly entirely. By extracting this component, the patent eliminates the response time delays and sluggish operation associated with diaphragm-based pilot control, while maintaining the essential pulse jet control function through alternative means.
Solution Approach 2:
The patent replaces the mechanical diaphragm-based pilot control system with a direct piston control mechanism. This substitution eliminates the intermediate diaphragm component that caused response delays, allowing for faster and more reliable operation of the pulse jet valve.
2Quantity of substance
If a pilot diaphragm with limited orifice size is used, then the valve structure is compact, but air consumption increases
Solution Approach 1:
By removing the pilot diaphragm and its associated limited orifice, the patent allows for a larger exhaust port opening. This extraction eliminates the bottleneck effect of the small orifice, enabling greater air flow capacity without the penalty of high air consumption associated with restricted flow paths.
Solution Approach 2:
Instead of using a small orifice to control air flow through a diaphragm system, the patent inverts the approach by using a large exhaust port that allows free air flow. This inversion of the flow control strategy reduces air consumption while maintaining effective pulse jet generation.
3Reliability
If a bleed hole is provided in the diaphragm, then the valve can function, but the valve malfunctions due to blockage or enlargement of the bleed hole
Solution Approach 1:
The patent eliminates the bleed hole from the diaphragm structure by removing the diaphragm entirely. This extraction prevents the reliability issues associated with bleed hole blockage or enlargement, as the component and its vulnerable feature no longer exist in the design.
Solution Approach 2:
By removing the diaphragm with its vulnerable bleed hole, the patent adopts a simpler, more robust piston-based control mechanism that does not require maintenance of small holes or fragile diaphragm structures, thereby improving long-term reliability.
4Use of energy by moving object
If conventional piston operated pulse jet solenoid valves are used, then the valve can operate, but power consumption is higher
Solution Approach 1:
The patent replaces the diaphragm-based mechanical pilot control system with a direct-acting piston mechanism. This substitution reduces the energy required to actuate the valve by eliminating the intermediate diaphragm and its associated friction and pressure requirements, thereby reducing power consumption while maintaining reliable operation.
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 achieves lower response time, reduced air consumption, improved temperature range, and longer lifespan by eliminating the need for high external pilot pressure and preventing bleed hole clogging, while maintaining efficient dust removal.
Implementation Method 1
The solenoid is operable to actuate to open or close the valve seat
Implementation Method 2
movement of the pilot piston results in opening or closing of the valve seat
Implementation Method 3
rapid movement of the piston creates a pulse jet of pressurized air
Implementation Method 4
A pulse jet valve is used to create high-pressure blasts of pulsing air, which create a shock wave that passes through the bag and causes the bag to expand which shatters the dust cake accumulated around the bag
Data Source
AI summary
A pilot operated pulse jet solenoid valve 300 includes a pilot piston 308 for sliding motion in a pilot piston bore 322 for opening or closing a valve seat 306 based on actuation of a valve 312 by a solenoid 310. The pilot piston 308 replaces a pilot diaphragm with bleed hole used in conventional pilot operated pulse jet solenoid valves. The pilot piston 308 and the pilot piston bore 322 are dimensioned to have clearance for passage of pressurised air which eliminates the need of a bleed hole, thereby obviating drawbacks associated with the pilot diaphragm and the bleed hole. Further advantages include reducing response time of the pulse jet valve 300, low wear and tear, longer life and no need of higher pressure pilot air supply for actuating the pilot piston 308.