The Role of Electromagnetic Pulse Valve in Dust Collector

Structural Features of Baghouse Dust Collectors:

The main structure of a baghouse dust collector consists of four parts: the housing, the dust filter bag assembly, the pulse-jet cleaning system, and the ash discharge system.

1. Housing:
   The housing is composed of the upper chamber, middle chamber, hopper, and the air inlet/outlet.

2. Dust Filter Bag Assembly:
   This assembly includes the dust filter bags and their supporting cages.

3. Pulse-Jet Cleaning System:
   This system consists of an air tank, blow pipes, pulse solenoid valves, solenoid control valves, and a pulse controller.

4. Ash Discharge System:
   This system includes a motor, reducer, screw conveyor, and rotary airlock valve.

Many of the pulse solenoid valves used are threaded pulse solenoid valves.

Features of Threaded Pulse Valve:

The characteristic of a threaded pulse solenoid valve is that the air inlet and outlet ports are arranged at a 90-degree angle. Inside the valve, the diaphragm divides the pulse solenoid valve into two air chambers—front and rear.

High-pressure air enters through the inlet and flows into the lower air chamber. When the pulse solenoid valve is not energized, air flows through the constant pressure conduit between the upper and lower chambers and into the pressure relief chamber via a throttle orifice. The valve core, under the action of a spring, blocks the exhaust port, preventing air from escaping. This equalizes the pressure between the pressure relief chamber and the lower air chamber. The diaphragm, pressed down by the spring, seals the blow port, preventing air from discharging.

When the pulse solenoid valve is energized, the valve core is lifted by electromagnetic force, opening the exhaust port and releasing compressed air. Due to the throttle orifice in the constant pressure conduit, the rate at which air escapes through the exhaust port is faster than the rate at which air enters the pressure relief chamber. This causes the pressure in the pressure relief chamber to drop below that of the lower air chamber, pushing the diaphragm upward and opening the blow port for pulse cleaning.