DMF-Z Pulse Valve

The DMF-Z Right-Angle Electromagnetic Pulse Valve is a specialized solenoid valve designed specifically for use with baghouse dust collectors. It serves as the compressed air switch for the pulse-jet cleaning system in pulse-jet baghouse dust collectors. Controlled by output signals from the pulse-jet control instrument, it sequentially performs pulse-jet cleaning on filter bags row by row (or chamber by chamber). This maintains the dust collector's resistance within a preset range, ensuring its processing capacity and dust collection efficiency while achieving the goal of shaking dust off the filter bags.

Schematic Diagram

Structural Features

The valve body and cover of the DMF-Z right-angle electromagnetic pulse valve are manufactured from die-cast aluminum alloy. After surface treatment, they exhibit excellent corrosion resistance. The diaphragm and sealing gasket are vulcanized and composite using new processes. The electromagnetic pilot head is composed of magnetic materials and stainless steel magnetic shielding materials. Springs and fasteners are all made of stainless steel. The air distributor (air chamber) connection pipe and the dust collector blowpipe are inserted into the valve inlet and outlet respectively. Both ends are sealed by tightening the compression nuts. Valves are available in three specifications—20, 25, and 40S—for selection in pulse-jet baghouse dust collectors with various air handling (purification) capacities. The valve body and cover are die-cast for high density, with a transparent lacquer coating enhancing corrosion resistance. The diaphragm seal employs a metal-rubber composite for excellent rigidity and leak-free performance. The electromagnetic pilot head delivers strong magnetic pull with responsive and reliable operation. The valve exhibits superior opening performance, opening reliably at 85% of rated voltage. It also demonstrates excellent closing performance, sealing reliably at 0.15 MPa air pressure.

Parameters

Working Principle

The diaphragm divides the electromagnetic pulse valve into front and rear chambers. When compressed air is supplied through the throttle hole into the rear chamber, the rear chamber pressure forces the diaphragm to seal the valve outlet, placing the electromagnetic pulse valve in the “closed” state. When the electrical signal from the pulse jet controller ceases, the solenoid valve armature resets. The rear chamber vent closes, and the increased pressure in the rear chamber forces the diaphragm to seal the valve outlet, returning the solenoid valve to the “closed” state. The electromagnetic pulse valve controls the opening and closing of the valve body's relief port via electrical signals. During valve relief, pressurized gas in the rear chamber is vented, while pressurized gas in the front chamber is throttled by the diaphragm's vacuum port, lifting the diaphragm to initiate pulse blowing. When the valve body ceases unloading, pressurized gas rapidly fills the rear chamber through the damping orifice. Due to the difference in force-bearing areas on both sides of the diaphragm against the valve body, the gas force in the rear chamber becomes dominant. This reliably closes the diaphragm over the valve's discharge port, halting the pulse valve's discharge.

Application Areas

Dust Removal Equipment Sector

Baghouse Dust Collectors: As the core component of the pulse-jet cleaning system, these units are controlled by pulse-jet controllers to sequentially blow compressed air into filter bags, maintaining the dust collector's resistance within preset limits. This ensures consistent processing capacity and dust collection efficiency, making them widely used for dust control in mining, building materials, metallurgy, and chemical industries.

Air-Box Pulse Dust Collectors: Certain right-angle DMF-Z pulse valves can be integrated into the pulse-jet systems of air-box pulse dust collectors, working in tandem with the air-box structure to achieve efficient dust removal.

Air Purification Field

Industrial Air Purification Equipment: Used to control airflow, remove dust from filter surfaces, enhance purification efficiency, and extend filter lifespan. Suitable for industries with stringent air cleanliness requirements, such as electronics, pharmaceuticals, and food processing.

Commercial Air Purification Systems: In air purification equipment for shopping malls, hotels, office buildings, and similar venues, DMF-Z pulse valves assist in achieving efficient air filtration and purification.

Chemical Industry

Gas Separation and Purification: Used in gas separation units during chemical production to precisely control gas flow and pressure, ensuring stability and efficiency in the separation process.

Reactor Gas Control: Within chemical reactors, it regulates gas inlet/outlet and pressure to maintain stable reaction conditions, enhancing reaction quality and safety.

Energy Sector

Thermal Power Plants: Controls the flow of combustion gases and steam to optimize combustion processes, improve energy efficiency, and reduce pollutant emissions.

Gas Purification Systems: Manages dust and particulate removal during gas purification to ensure gas quality and minimize environmental pollution.

Dust Recovery Systems

Used to regulate gas flow, pressure, and temperature for efficient dust recovery and reuse, minimizing exhaust pollution. Applicable in dust recovery stages across cement, ceramics, glass, and related industries.

Liquid Control Systems

Employ electromagnetic force to precisely regulate liquid inflow and outflow in industrial production. Used in liquid transfer and metering systems for chemical, pharmaceutical, food processing, and similar industries.