Working Principle of the DMF Right-Angle Pulse Valve

The pulse valve is a critical component in the pulse bag dust collector, responsible for the cleaning function of the system. It comes in three main types: right-angle, submerged, and straight pulse valves, with sizes ranging from 20 to 76 mm (0.75 to 3 inches). Each valve's gas consumption ranges from 30 to 600 m³/min (0.2 to 0.6 MPa). Typically, domestic pulse valves operate at 0.4 to 0.6 MPa, while submerged valves function between 0.2 and 0.6 MPa.

Structure and Operation of the Right-Angle Pulse Valve

The right-angle pulse valve is designed with inlet and outlet pipes positioned at a 90° angle. Inside the valve, a diaphragm divides it into front and rear air chambers. When compressed air enters, it fills the rear air chamber through a small throttle hole. The pressure in this chamber pushes the diaphragm against the valve's output port, keeping the valve in a closed state.

When an electrical signal from the pulse jet controller is sent, the valve's armature moves, opening the pressure relief hole in the rear air chamber. This rapid loss of pressure causes the diaphragm to move back, allowing compressed air to exit through the valve outlet, thus opening the valve and creating a powerful air jet.

Once the electrical signal stops, the armature resets, the rear air chamber closes, and the pressure rebuilds, pushing the diaphragm back into the closed position, sealing the valve again.

Key Technical Parameters of Pulse Valves

 Operating Environment : Suitable for temperatures between -10 to +55°C, with relative humidity not exceeding 85%.

 Working Medium : Clean air with a dew point of -20°C.

 Injection Pressure : The gas source pressure should be between 0.3 to 0.6 MPa.

 Injection Volume : At 0.6 MPa, the DMF-25 valve injects 45L per pulse, DMF-40 injects 70L, DMF-50 injects 160L, and DMF-62 injects 270L.

 Electrical Requirements : The valve operates at DC24V with 0.8A, AC220V with 0.14A, or AC110V with 0.3A.

Installation Tips

When connecting the air inlet and outlet of the pulse valves to the injection pipe, ensure that the threads are sealed with PTFE tape to prevent leaks. Also, avoid overextending the screw length at the air inlet, as it can affect the injection volume.