Ball Check Valve Slurry Transfer to Prevent Pump Clogging
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Solution Overview
Problem
Existing slurry transfer methods using ball type check valves often result in clogging due to particles in the slurry, leading to frequent pump stoppages and increased raw material and energy losses, as well as environmental impact from cleaning waste liquids.
Innovation Solution
A method for transferring slurry using a ball type check valve operated under specific conditions defined by the formula P=W(ρ1/(ρb−ρ1))0.5/(C·d(d+R)R0.5), where P is within the range 7.8×103 to 5.0×105, with ball diameters between 5 mm and 50 mm, particle diameters between 10 μm and 5000 μm, and particle concentrations between 0.001 kg/m3 and 500 kg/m3, to prevent clogging and ensure stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ball type check valve is used for slurry transfer, then the valve can prevent backflow and control slurry direction, but particles in the slurry cause clogging of the valve
Solution Approach 1:
The invention changes the operational parameters of the check valve by controlling the slurry flow rate to satisfy a specific mathematical relationship with particle concentration, particle size, and valve dimensions. This parameter optimization ensures that particles are flushed through the valve opening without accumulating and causing clogging, while maintaining the valve's backflow prevention function.
2Productivity
If the pump operates continuously to avoid stoppages, then productivity increases, but clogging occurs more frequently requiring cleaning
Solution Approach 1:
The invention implements a feedback control mechanism where the slurry flow rate is continuously adjusted based on the operational conditions and particle characteristics. By maintaining the flow rate within the optimized range defined by the mathematical relationship, the system prevents clogging accumulation and enables continuous operation without frequent stoppages for cleaning.
3Object-affected harmful factors
If the pump stops to clean the valve, then clogging is removed, but raw material loss and energy consumption increase
Solution Approach 1:
The invention applies preliminary action by pre-optimizing the slurry flow rate before particles can accumulate and cause clogging. By maintaining the flow rate within the mathematically determined optimal range, particles are continuously flushed through the valve opening, preventing clogging formation in the first place and eliminating the need for subsequent cleaning operations that would cause energy loss and raw material waste.
4Reliability
If the ball diameter is increased to prevent particle accumulation, then clogging is reduced, but the valve becomes more complex and larger
Solution Approach 1:
Instead of increasing the ball diameter to prevent clogging, the invention changes the operational parameters by optimizing the slurry flow rate according to the mathematical relationship with particle concentration and size. This approach prevents clogging through controlled particle flushing rather than relying on a larger valve opening, thereby maintaining compact valve dimensions while achieving reliable anti-clogging performance.
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
This approach significantly reduces clogging, minimizing raw material loss, energy consumption, and environmental impact by allowing the slurry transfer pump to operate stably for longer periods, and prevents the formation of flake lumps in polymerization tanks, thereby enhancing process efficiency and reducing waste.
Implementation Method 1
a method of transferring a slurry, in which a transfer pump equipped with a ball type check valve is operated under the condition satisfying the following formula (1) to transfer a slurry containing particles and a liquid
Implementation Method 2
P=W(ρ1/(ρb−ρ1))0.5/(C·d(d+R)R0.5) wherein, P=W(ρ1/(ρb−ρ1))0.5/(C·d(d+R)R0.5), where W represents the particle flow rate (kg/hr) in the slurry passing through the ball type check valve, C represents the particle concentration (kg/m3) in the slurry
Data Source
AI summary
A method of transferring a slurry is provided. The method involves transferring a slurry containing particles and a liquid using a transfer pump equipped with a ball type check valve. The transfer pump is operated under the condition satisfying the following formula: 7.8×103<P≤5.0×105. In the formula, P=W(ρ1/(ρb−ρ1))0.5/(C·d(d+R)R0.5). W represents the particle flow rate (kg/hr) in the slurry passing through the ball type check valve, C represents the particle concentration (kg/m3) in the slurry, d represents the maximum particle diameter (m) of the particles in the slurry, R represents the ball diameter (m) of the check valve, ρ1 represents the density (kg/m3) of the liquid, and ρb represents the density (kg/m3) of the ball of the check valve.