Automatic Integrated Powder Chemical Dosing Variable Frequency Dosing Device QXYTH-4000L

The Automatic Integrated Powder Chemical Dosing Variable Frequency Dosing Device is a precision-engineered system designed for the continuous and automated preparation and delivery of polymer solutions. This equipment integrates powder feeding, water dissolution, and chemical metering into a single automated workflow, ensuring precise concentration control for various industrial water treatment processes.

Technical Overview and Operating Principle

This system utilizes a variable frequency drive (VFD) to regulate the speed of the screw feeder, allowing for accurate adjustment of dry powder input based on the required chemical concentration. The three-tank overflow structure—comprising a dissolution tank, a maturation tank, and a storage tank—ensures that the chemical solution undergoes sufficient aging time before being discharged. By utilizing PLC-based automated control, the device minimizes human intervention and prevents the formation of "fish-eye" particles often associated with manual mixing.

Key Technical Features

• Precision Metering: Equipped with a helical screw feeder and high-accuracy sensors to maintain solution stability.
• Frequency Conversion Control: The VFD dosing system adjusts flow rates in real-time to match fluctuating sewage treatment demands.
• Corrosion Resistance: Constructed from AISI 304/316L stainless steel or PP materials to withstand aggressive chemical environments.
• Safety Interlocks: Includes low-level alarms, dry-run protection for pumps, and overflow prevention mechanisms.

Technical Specifications

Industrial Applications

This integrated dosing unit is extensively utilized in sectors requiring consistent liquid-solid separation. Specific applications include municipal sludge dewatering, flocculant preparation in petrochemical wastewater treatment, and chemical dosing for papermaking retention aids. It is also compatible with stacked screw sludge dewatering machines for enhanced coagulation performance in aquaculture and printing and dyeing industries.

Frequently Asked Questions (FAQ)

How does variable frequency control improve the dosing process in wastewater treatment?

The integration of variable frequency dosing technology allows the system to synchronize the chemical delivery rate with the actual flow and turbidity of the influent. Unlike fixed-speed pumps, a VFD-controlled system prevents chemical waste and ensures optimal flocculation. As a specialized manufacturer, Yangzhou Qinxin Environmental Protection Technology Co., Ltd. designs these systems to interface directly with sewage treatment equipment. Our company, which combines industry and trade, focuses on R&D for PAM integrated dosing devices and stacked screw sludge dewatering machines, serving diverse sectors including pharmaceutical, chemical, and leather processing. Our AAA-level contract-oriented status and multiple ISO certifications ensure that our VFD systems meet rigorous technical standards for global export, particularly to Southeast Asian markets.

What are the maintenance requirements for an automated powder dosing system?

Maintenance focuses on ensuring the dry powder feeder remains moisture-free and the chemical metering pump is calibrated. Regular inspection of the mixing impellers and level sensors is recommended to maintain system integrity. Yangzhou Qinxin Environmental Protection Technology Co., Ltd. provides comprehensive technical support for our sludge low-temperature drying systems and solid-liquid separators. Our dedicated team utilizes years of practical experience to assist customers in the municipal, food, and brewing industries. With a strong technical force and advanced service awareness, we ensure that our annual production equipment—widely exported as an important supplier in China—operates with high reliability under strict management processes.