Hengbiao Technology Launches Industry-First Automated Spraying System: Weight-Linked Control Solves the Challenge of Mine Dust Suppression

 Recently, Chongqing Hengbiao Technology Co., Ltd. (hereinafter referred to as "Hengbiao Technology") successfully delivered an intelligent, automated dust suppression spraying system based on weight detection. This system has been deployed to manage dust control operations across six material conveyor belts at a large-scale building materials enterprise. Previously, the client had experienced equipment damage caused by excessive water flow from their self-installed spraying pipelines, which also lacked the capability for on-demand spraying. Leveraging its deep expertise in the field of weighing equipment, Hengbiao Technology mobilized its R&D and technical departments to rapidly tackle these challenges, ultimately customizing an automated spraying solution that operates entirely without human intervention and achieves precise, synchronized linkage with the material conveying process. Following a 15-day on-site installation and commissioning period, the project’s final results garnered unanimous praise from the client, marking a milestone breakthrough for Hengbiao Technology in the realm of intelligent environmental retrofitting.

According to Mr. Li Pinhua, the project manager at Hengbiao Technology, the client had previously installed spraying pipelines based solely on their own practical experience, drilling rows of small holes into the pipes to facilitate dust suppression. However, because the pipes sprayed water continuously—and the water flow volume was difficult to regulate—large quantities of water frequently drenched the machinery, leading to repeated failures in critical components such as motors and bearings. Concurrently, the client articulated a core requirement: spraying should commence only when materials are actively passing along the conveyor belt; conversely, if the upstream section of the belt carries no material (i.e., registers no weight), spraying must cease immediately to prevent water wastage and to protect unloaded equipment from corrosion. Yet, traditional manual start-and-stop methods suffered from delayed response times and frequent operational errors, rendering them incapable of meeting these exacting requirements for precision control.

As a technology-driven enterprise with a long-standing focus on the weighing equipment sector, Hengbiao Technology quickly identified the specific technical convergence points required to resolve these pain points. "The client approached us specifically because they recognized Hengbiao’s mature expertise in weight sensing and material detection technologies," Mr. Li Pinhua recalled. Upon receiving the client's request, Hengbiao Technology immediately convened a joint working group comprising its R&D and technical departments. Through collaborative deliberation, they finalized a system model for automated spraying that achieves deep-level integration between weight-sensing signals and the spraying actuators.

Tailoring the solution to the actual layout of the client's six conveyor belts, Hengbiao Technology installed a high-precision weight detection device on each individual belt, enabling the system to monitor the weight of the materials on the belt surface in real time. The system's logic is designed as follows: whenever any conveyor belt detects the passage of material (specifically, when the weight exceeds a preset threshold), it immediately transmits a digital signal to the PLC in the control room. The control room then automatically activates the solenoid valve corresponding to that specific conveyor belt, thereby opening the water supply line and triggering the spray nozzles in that zone to suppress dust. Once the material has finished passing along the conveyor belt and the detected weight returns to zero, the system promptly deactivates the solenoid valve and halts the spraying process.

The entire operation runs fully automatically, requiring no human intervention whatsoever. Furthermore, the system incorporates an integrated water-level monitoring module capable of automatically detecting whether the water tank is in a "full" or "low" state. It issues alerts to the host computer or triggers interlocking safety mechanisms to ensure the continuous and stable operation of the spraying system. In stark contrast to the client's previous "all-on-or-all-off", indiscriminate flooding approach, the new system implements on-demand water supply—precisely tailored to each individual conveyor belt—thereby fundamentally eliminating the risk of equipment damage caused by excessive water usage.

"This system works even better than we had anticipated," remarked the client's on-site project manager. "It truly delivers on its promise: spraying only when material is present and stopping when it is not. Moreover, with each conveyor belt under independent control, the system effectively conserves water while simultaneously protecting our equipment." Manager Li Pinhua revealed that, following a comprehensive industry search and comparative analysis, this "weight-linked spraying" mode appears to be a novel application with no known precedents; it stands as an industry first, developed entirely independently by Hengbiao Technology.

The successful delivery of this project marks a significant milestone in Hengbiao Technology's evolution—transitioning from a mere supplier of weighing equipment to a provider of comprehensive "weighing + intelligent control" solutions. It also establishes a replicable, cost-effective model for dust-suppression retrofits in dust-generating environments, such as mines and sand & aggregate processing plants. "We will continue to iterate and refine this system," stated Li Pinhua, "expanding its application to a wider range of industrial sites that require on-demand spraying capabilities, thereby contributing to the development of 'green mines' and 'smart factories'."