The classification accuracy of quartz sand screening machines does not meet
the standard, which is usually caused by various factors. The following are the
detailed steps and possible causes for investigating the cause:
1. Material aspect
Uneven particle size of raw materials
Reason: Insufficient pre-treatment of raw materials or substandard crushing
processes result in a wide range of material particle size distribution, which
affects the screening effect.
Troubleshooting method: Check the particle size distribution of the raw
materials to confirm whether further crushing or adjustment of the pretreatment
process is needed.
Inappropriate moisture content
Reason: Excessive moisture content in quartz sand may cause the materials to
stick together, affecting their passage through the sieve. If the moisture
content is too low, it may generate dust and cause clogging of the sieve
mesh.
Troubleshooting method: Check the moisture content of the material, adjust
the moisture control system or pre drying process.
Excessive adhesion of materials
Reason: There are components such as clay or organic matter in the material,
which can easily cause adhesion and prevent particles from separating according
to ideal particle size.
Troubleshooting method: Conduct chemical analysis on the material and perform
pre-treatment if necessary (such as acid washing or adding dispersants).
2. Factors related to screening equipment
Mesh aperture and wear
Reason: Inappropriate selection of sieve aperture, or wear and blockage of
the sieve due to long-term use, resulting in a decrease in screening
accuracy.
Troubleshooting method: Check whether the aperture of the sieve meets the
design requirements, inspect for damage or blockage, and replace or clean the
sieve if necessary.
Screen installation and tension
Reason: Uneven installation and insufficient tension of the screen mesh can
affect the screening effect, and particles can easily pass through the uneven
pores of the screen mesh.
Troubleshooting method: Check the installation of the screen mesh to ensure
that it is flat and has sufficient tension, adjust the installation angle and
position.
Improper setting of equipment vibration parameters
Reason: Improper setting of vibration frequency, amplitude, and inclination
angle of the vibrating screen can result in insufficient residence time of
materials on the screen or inadequate screening.
Troubleshooting method: Adjust the vibration frequency and amplitude to
ensure uniform distribution of materials, and conduct a trial run to determine
the optimal parameters.
3. Issues with the conveying and feeding system
Insufficient feeding speed and uniformity
Reason: The material feeding speed is too fast or too slow, and the feeding
system is uneven, resulting in insufficient processing capacity of the screening
machine and affecting the grading effect.
Troubleshooting method: Check the feeding device, adjust the feeding speed,
and ensure that the material enters the screening equipment evenly and
continuously.
Unreasonable design of conveying system
Reason: The conveying equipment may cause material to accumulate or clump
before reaching the screening machine.
Troubleshooting method: Check the working status of the conveyor belt or
vibrating feeder to ensure a smooth conveying process.
4. Equipment maintenance and operation status
Equipment aging and component wear
Reason: After prolonged use, internal components of the equipment such as
screens, vibrators, bearings, etc. may age or wear out, affecting the overall
operational performance.
Troubleshooting method: Regularly check the equipment status, replace damaged
parts in a timely manner, and perform necessary maintenance.
Control system malfunction
Reason: Malfunction or parameter setting error in the automation control
system, resulting in unstable equipment operation.
Troubleshooting method: Check the PLC control system and sensor data to
ensure that the parameter settings meet the process requirements.
5. Environment and operating conditions
Influence of environmental temperature and humidity
Reason: Excessive or insufficient temperature and humidity may affect
material fluidity and screening efficiency.
Troubleshooting method: Monitor the production environment to ensure that the
insulation and humidity are within the appropriate range, and adjust the
environment if necessary.
Improper operation by the operator
Reason: Improper operation by operators may result in incorrect equipment
parameter settings or uneven feeding, affecting screening accuracy.
Troubleshooting method: Strengthen operational training to ensure that
operators are familiar with equipment operation procedures and parameter
adjustment methods.
summarize
The classification accuracy of quartz sand screening machine may not meet the
standard due to various reasons such as raw material problems, equipment screen
condition, vibration parameters, feeding system, equipment maintenance, and
environmental factors. By carefully investigating each possible cause, adjusting
equipment parameters, improving feeding conditions, strengthening equipment
maintenance, and enhancing operational capabilities, the screening accuracy can
be gradually improved to achieve the expected product quality standards.