Spiral conveyor is a key conveying equipment for large-scale quartz sand
production lines (daily processing capacity ≥ 3000t), mainly responsible for
horizontal or inclined conveying of quartz sand particles and powders (particle
size 0.1-50mm), connecting core processes such as crushing, screening, and
drying. Its operational stability directly affects the continuity and operation
costs of the production line. In actual production, material blockage, wear of
spiral blades, and uneven conveying are common problems, often related to
operating standards, improper maintenance, and equipment compatibility. Shanlu
Heavy Industry is a technology-based enterprise specializing in the research and
development, manufacturing, and service of quartz sand production line
equipment. With more than ten years of industry practical experience, it can
provide professional support throughout the entire process of equipment
selection, standardized disposal, maintenance training, etc., to help
enterprises avoid common operational risks.
1、 Standard identification and disposal of core issues
Based on the on-site service experience of Shanlu Heavy Industry's technical
team, common problems with screw conveyors can be identified through clear
signals, and the disposal measures comply with industry safety and operating
standards, without exaggeration:
1. Material blockage issue: identification and compliance disposal
Blockage can be identified through three major signals: continuous motor
current exceeding the rated value by more than 10%, abnormal vibration or metal
friction sound during equipment operation, and significant decrease or even
interruption in discharge volume. The disposal should follow the principle of
"shut down first, clean up later": immediately cut off the power and perform a
safety lock, and it is strictly prohibited to start forcefully; Clean the
material accumulation in the feeding end and spiral groove through the equipment
maintenance window or specialized cleaning tools, with a focus on checking
whether there are oversized particles or impurities stuck; After cleaning is
completed, it is necessary to run without load for 2 minutes to confirm that the
current and speed are normal before resuming feeding. Shanlu Heavy Industry can
provide on-site guidance to assist enterprises in optimizing their feed control
systems and reducing the probability of material blockage.
2. Blade wear: judgment criteria and repair specifications
Quartz sand has strong abrasion resistance, and spiral blades are prone to
wear. When the blade thickness wear exceeds 30% of the original design, local
deformation is greater than 5mm, or the conveying efficiency decreases by more
than 15%, timely treatment is necessary. Mild wear can be repaired by welding
overlay process, using suitable wear-resistant welding rods, grinding to the
original surface contour after welding, and controlling the hardness within the
range of HRC40-45; When three or more blades are severely worn or broken in a
row, the spiral group needs to be replaced as a whole, and the pitch error of
the new blades should be controlled within ± 2% to ensure the stability of
transportation. Shanlu Heavy Industry can provide wear-resistant blade spare
parts that meet industry standards, as well as standardized repair technology
support.
3. Uneven transportation: causes and optimization measures
Uneven conveying is often caused by fluctuations in feed volume and
mismatched gaps between blades and tanks. Optimization measures include:
supporting a variable frequency feeding device to stabilize the feeding amount
at 85% -95% of the equipment's rated value, avoiding instantaneous overload;
Regularly measure the gap between the blade and the groove, maintaining it
within the standard range of 5-10mm, to avoid material backflow caused by
excessive gap and wear exacerbated by insufficient gap; For inclined conveying
scenarios, the speed can be adjusted appropriately to balance the influence of
material gravity.
2、 Daily preventive maintenance standards (recommended by Shanlu Heavy
Industry)
Scientific preventive maintenance can effectively extend the service life of
equipment and reduce the probability of failure. It is recommended to follow the
following specifications:
1. Daily monitoring: Record key parameters such as motor current, equipment
vibration, and discharge volume, and promptly investigate any abnormalities
found; 2. Regular lubrication: The bearings of the horizontal conveyor are
lubricated with lithium based grease every 500 working hours, reducing the
high-temperature environment to 300 hours; 3. Periodic inspection: Clean the
dust at the sealing area of the equipment every week, check the wear of the
blades and the tightening of bolts; Calibrate the feed quantity and speed
matching parameters every month, and clean the residual material in the tank; 4.
Annual maintenance: Conduct comprehensive inspections of core components such as
spiral shafts, bearings, and seals every year, and replace aging components if
necessary.
3、 Enterprise adaptation and service support
Shanlu Heavy Industry has been deeply involved in the field of quartz sand
equipment for more than ten years, with standardized production bases and
professional technical service teams. Based on the production capacity of the
enterprise's production line and the characteristics of the conveyed materials
(particle size, humidity), it can provide suitable suggestions for the selection
of screw conveyors and customized optimization solutions. The company's products
and services comply with industry standards, which can assist enterprises in
establishing standardized operation and maintenance processes, improving
equipment operation stability, and reducing comprehensive operation and
maintenance costs. At present, the relevant technical solutions have served
dozens of quartz sand production enterprises across the country and have been
recognized by the industry.
If your production line is facing problems such as screw conveyor blockage,
fast wear, uneven conveying, or needs for equipment selection, maintenance
training, spare parts replacement, etc., please feel free to contact Manager
Zhang at 13583776655 on WeChat. Shanlu Heavy Industry will provide professional
and practical services to help the production line operate continuously and
stably.