The DMF-Z type Right angle valve is a specialized electromagnetic pulse valve designed for bag-type dust collectors.
It serves as the compressed air switch in the pulse bag filter’s ash-cleaning system, controlled by a pulse injection controller. Its primary function is to periodically blow air through filter bags (row by row or chamber by chamber) to remove accumulated dust, maintaining the dust collector’s resistance within a set range and ensuring efficient dust removal and collection.
2. Working Principle
The valve is divided into front and rear air chambers by a diaphragm.
Closed State: When compressed air enters the rear chamber through a throttle hole, the pressure forces the diaphragm against the valve’s outlet, keeping it closed.
Open State: When a signal from the pulse controller energizes the solenoid, the armature moves, opening a vent hole in the rear chamber. This rapid pressure loss allows the diaphragm to retract, releasing compressed air through the valve outlet for pulsed cleaning.
Reset: Once the electrical signal ends, the armature resets, closing the vent hole. The rear chamber repressurizes, forcing the diaphragm back to seal the outlet, and the valve returns to the closed state.
3. Technical Parameters
Work Pressure: 0.2–0.7 MPa (some sources specify a range of 0.1–0.7 MPa).
Working Medium: Clean air (after oil and water removal).
Voltage: Available in DC 12V, DC 24V, AC 110V, AC 220V.
Response Time: ≤0.03 seconds at 85% of rated voltage.
Durability: Membrane lifespan ≥800,000 cycles (some sources claim up to 1 million cycles).
Temperature Resistance: Operational in environments with temperatures ranging from -65°C to +85°C (varies by model).
4. Structural Features
Right-Angle Design: The inlet and outlet form a 90° angle, facilitating easy installation between the air tank (气包) and the dust blower tube.
Optimized Design:
Improved exhaust chamber volume and 导磁材料 (magnetic conductive materials) enhance sensitivity and reliability.
Smooth gas flow ensures effective pulse cleaning.
Some models feature corrosion-resistant coatings or materials for harsh environments.
5. Applications
Primary Use: Core component in pulse bag dust collectors for industrial dust removal, widely applied in sectors such as:Additional Uses: Also used in compressed air systems (e.g., for 定时排放冷凝水 in compressors, coolers, and filters).
Steel, power generation, cement, chemical, and smelting industries.
Waste incineration plants.
Mining and petroleum processing.
6. Selection and Maintenance Considerations
Selection Factors:
Match the valve’s specifications (e.g., pressure, voltage) to the dust collector’s requirements.
Consider environmental factors (e.g., temperature, dust properties) and choose corrosion-resistant or specialized coatings if needed.
Maintenance:
Regularly inspect for membrane wear or damage.
Ensure proper airflow and pressure stability to avoid premature failure.
Clean or replace filters in the air supply system to maintain clean working 介质.
7. Key Advantages
High efficiency in pulsed cleaning, ensuring consistent dust collector performance.
Durable construction with long service life.
Easy installation and compatibility with standard dust collector systems.
In summary, the DMF-Z type Right angle valve is a critical component in industrial dust control, valued for its reliability, efficiency, and adaptability to diverse industrial environments.