Defibrator Blow Valve Mounting Pipe for Pulp Flow
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Solution Overview
Problem
High energy consumption and component wear in defibrators used for pulp production from lignocellulosic materials, particularly due to inefficient steam usage and direct mounting of blow valves, which increases operational costs and reduces equipment lifespan.
Innovation Solution
A pulp refining system with a blow valve mounted via a mounting pipe of specific length and diameter, creating a laminar pulp flow that reduces wear and energy consumption by minimizing shock waves and optimizing flow conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the blow valve is directly mounted at the defibrator housing, then the device complexity is reduced, but the wear of the blow valve increases and operational life time decreases
Solution Approach 1:
A mounting pipe with length of at least 0.2 meter is introduced as an intermediary component between the defibrator housing and the blow valve. This mounting pipe creates a separated mounting arrangement that reduces wear on the blow valve by minimizing direct exposure to shock waves and turbulent flow from the defibrator housing, thereby extending operational life time while maintaining acceptable device complexity.
2Device complexity
If the blow valve is directly mounted at the defibrator housing, then the device complexity is reduced, but energy consumption increases due to shock waves and turbulent flow
Solution Approach 1:
The mounting pipe serves as a flow conditioning intermediary that allows turbulent flow and shock waves from the defibrator housing to settle before entering the blow valve. This separation reduces energy losses associated with turbulent flow through the valve, thereby reducing overall energy consumption while adding only minimal structural complexity.
Solution Approach 2:
The mounting pipe provides a preliminary flow conditioning section that prepares the pulp flow before it reaches the blow valve. By allowing the flow to stabilize and reduce turbulence in advance, the system minimizes energy losses at the valve entrance, effectively reducing overall energy consumption.
3Reliability
If a mounting pipe with length at least 0.2 meter is used, then wear of the blow valve is reduced and operational life time is extended, but device complexity increases
Solution Approach 1:
The mounting pipe is a simple cylindrical intermediary component that provides the necessary separation distance (at least 0.2 meter) between the defibrator housing and blow valve. Its simple geometric form and straightforward installation minimize the increase in device complexity while effectively reducing blow valve wear through flow separation.
4Use of energy by moving object
If a mounting pipe with length at least 0.2 meter is used, then energy consumption is reduced by minimizing shock waves, but device complexity increases
Solution Approach 1:
The mounting pipe creates a preliminary flow stabilization zone that allows shock waves and turbulent flow patterns to dissipate before the pulp enters the blow valve. This pre-conditioning of the flow reduces energy losses in the valve and downstream equipment, achieving energy savings with minimal added 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 solution effectively reduces energy consumption and extends the operational life of blow valve components by establishing a laminar pulp flow, thereby lowering operational costs and improving system efficiency.
Implementation Method 1
creating a laminar pulp flow that reduces wear and energy consumption by minimizing shock waves and optimizing flow conditions
Data Source
Figure 1~2
AI summary
The invention relates to a pulp refining system for mechanically refining of lignocellulosic material, comprising a defibrator, a defibrator housing, in which the defibratoris arranged, a blow valve having an inlet and an outlet and being adapted for regulating a flow of pulp therethrough, and a discharge pipe having an inlet, which is connected to the outlet (12) of the blow valve, wherein a mounting pipe having an inlet, which is connected to the defibrator housing, is arranged between the defibrator housing and the blow valve, said mounting pipe having a length of at least about 0.2 meter.