How does the pulse valve in bag dust removal work during cleaning?

The pulse valve opens intermittently; when it is open, high-pressure air is blown toward the filter element assembly to remove dust, and cleaning stops when it is closed. The blowing cycle of a typical pulse valve is 1 to 30 seconds, while the blowing time is 0.03 to 0.2 seconds

The main cause of oscillation in intermittent operations is impact; a PLC is used to control the solenoid valve

What I want to know is, during the dust cleaning cycle, does the pulse valve remain open without needing to be closed until the cleaning is complete, or is it kept open continuously during the cleaning phase to generate the force necessary for dust removal?

During the dust removal process, the dust collector does not rely primarily on compressed air injected by pulse valves; instead, it utilizes the large amount of surrounding air drawn in as the compressed air passes through the Venturi tube, thereby achieving dust removal. The pulse valves of dust collectors come in submersion type and right-angled type; the submersion type has low pressure loss and requires less compressed air pressure ； Right-angled types have high pressure loss and require high compressed air pressure. There are mainly two types of injection control modes. The first is based on a fixed time interval – injection occurs every few seconds. The second mode is pressure difference control: the pulse valve is activated to initiate injection when the pressure difference between the clean air chamber and the dust-filled air chamber reaches a certain level.

After you start the dust cleaning program, the electromagnetic pulse valve opens and closes intermittently; each opening lasts between 2 and 5 seconds, and the interval between openings can be set according to individual preferences.

The correct answer is on the 5th floor. The pulse valve opens, allowing compressed gas to pass through (inside the bag) to blow away dust on the outside of the bag. Both the on-time and off-time can be controlled, and these need to be adjusted according to specific circumstances.

The opening time between the pulse valve and the valve needs to be selected based on the operating conditions; in some cases it is set in the PLC, while in other cases it occurs when the pressure difference between the inlet and outlet of the dust collector reaches a certain value. They can also be used in combination, and the interval between activations is related to the gas supply capacity of the gas supply source. It is necessary to ensure that the cleaning is carried out at a pressure that meets the requirements for dust removal; otherwise, the cleaning effect will not be achieved