Recently, six sealed belt weighing feeders independently developed and produced by Guonuo Technology have completed all inspection, packaging, and customs declaration processes, and have been shipped to El Salvador in full assembly, officially landing on a large-scale chemical production project in the local area.
This equipment is specially designed for the quantitative conveying and continuous batching of calcium carbonate powder. With a fully sealed dust-proof structure, built-in belt automatic cleaning device, and high-precision dynamic measurement control system, it effectively solves industry pain points such as powder material feeding dust, belt sticking and wall hanging, and ratio error fluctuations. With reliable and stable technical equipment, it helps chemical enterprises achieve production line automation and environmental protection upgrades.

Calcium carbonate powder is a widely used basic raw material in the chemical industry. In processes such as fillers, coatings, plastics, and deep processing of building materials, continuous and uniform feeding and precise flow ratio directly determine the stability of finished product quality. The original feeding equipment of the chemical plant in El Salvador exposed many shortcomings during the powder conveying process: calcium carbonate powder has a fine texture and strong adhesion, which is easily adhered to the surface of the belt. Long term accumulation causes a large deviation between the actual feeding amount and the measured value, and the product qualification rate is difficult to guarantee; When the open body is in operation, dust flies everywhere, which not only consumes raw materials but also does not meet local environmental emission requirements. At the same time, it increases the internal wear and tear of the equipment and the cost of on-site cleaning labor.
The project party has previously applied other feeders and belt scales equipment from Guonuo Technology, with good application effects, accurate measurement, reliable control, and strong durability. For this project, Guonuo Technology's customized belt weighing feeder is still selected as the core conveying and measuring equipment for the batching section, with a one-time purchase of 6 units to build a complete automated batching chain.
In response to the characteristics of calcium carbonate powder materials, multiple special optimizations and upgrades have been carried out on the export models this time. The whole machine adopts a fully enclosed box sealing design, and the feeding port, belt running area, and discharge port are all enclosed and sealed to prevent the overflow of calcium carbonate powder dust from the source, improve the workshop working environment, reduce material waste, and comply with the environmental protection standards of chemical plants.
The core configuration that best fits the powder working conditions is the belt automatic cleaning device. The equipment is equipped with a wear-resistant polyurethane cleaner at the rear, which is combined with an elastic compression structure to scrape off the calcium carbonate fine powder adhered to the belt in real time during the return operation of the belt, eliminating zero point drift and measurement errors caused by powder agglomeration and accumulation, significantly reducing the frequency of manual regular cleaning, and ensuring the continuous and stable operation of the feeder for a long time.
In terms of core measurement and control performance, the six belt weighing feeders are equipped with Guonuo's mature dynamic weighing sensing system and intelligent operation control instruments, which can real-time collect the running speed of the belt and the instantaneous load of the material.
Through algorithms, errors caused by inclination angle, belt tension, and material bias load can be corrected, achieving continuous monitoring of calcium carbonate powder flow, quantitative feeding, cumulative production statistics and other functions. The operator can set the target feeding amount in the upper system, and the equipment automatically adjusts the operating speed for closed-loop material control.
The measurement accuracy is stable and reliable, meeting the strict production requirements of chemical processes for proportioning. At the same time, the overall structure of the machine fully considers the convenience of overseas on-site installation and operation, and the modular disassembly and assembly design facilitates cross-border transportation and on-site assembly.
The key transmission components are selected with wear-resistant and high-temperature resistant accessories to adapt to the local temperature and humidity environment in El Salvador, reducing the later failure rate and maintenance difficulty.
From on-site condition research, requirement communication, customized scheme design in the early stage, to production and manufacturing, continuous material testing 72 hours before leaving the factory, and finally packaging and shipping, the Guonuo Technology project team strictly follows the export project control standards throughout the process, and arranges dedicated personnel to follow up and verify every link to ensure that the 6 devices can be quickly installed and debugged upon arrival at the El Salvador site, and smoothly put into production.
As of now, Guonuo Technology's belt weighing feeder products have been implemented in projects in the building materials, mining, chemical and other industries in multiple countries around the world. With the characteristics of "stable accuracy, strong customization ability, and complete full cycle service", they continue to receive positive feedback from overseas customers. The batch delivery of 6 devices to the Salvadoran chemical project is an important breakthrough for Guonuo Technology in the Central American market. In the future, the brand will continue to refine its products according to the segmented working conditions of different regions and industries, and transfer the advantages of domestically produced high-precision bulk material measurement and production control equipment to more industrial scenarios.