Pulse Valve Diaphragm

Pulse valve diaphragm

The pulse valve diaphragm is a complete set of high-quality rubber diaphragms with a rivet head installed to seal the air outlet of the compressed air pipeline or the valve, a venting unloading hole, and bolt holes for fixed support. It is a key control part in the electromagnetic pulse valve.

working principle

The pulse valve diaphragm divides the pulse valve into two air chambers. When the electromagnetic pulse valve is connected to the clean compressed air in the pulse bag dust removal system, the compressed air passes through the orifice and enters the rear air chamber. The pressure of the rear chamber closes the diaphragm to the valve's air outlet. The pulse valve is closed. The pulse controller outputs a signal to move the pulse valve armature. The vent hole of the rear chamber of the valve opens, and the back chamber quickly loses pressure, causing the diaphragm. After the film is moved back, compressed air is blown through the valve's air outlet. The pulse valve is in the open state. The blowing starts. The electrical signal output by the pulse controller disappears. The electromagnetic pilot armature of the pulse valve is reset. The rear air chamber vent hole is closed. The rise of the chamber pressure makes the diaphragm of the pulse valve close to the air outlet of the valve, the pulse valve is closed, the injection is stopped, and the length of the injection time is controlled by the controller.

skills requirement

Since the pulse valve diaphragm is a flexible mechanism that often needs to be opened and closed to control the air flow, and requires good flexibility, and also requires the highest possible tightness, the material of the pulse valve diaphragm is directly It is related to the service life and use effect of the pulse valve diaphragm. In other words, the quality of the pulse valve diaphragm directly affects the working stability of the ash cleaning system of the pulse bag filter, and also directly affects the use cost of the dust removal equipment. The pulse valve diaphragm has a promise of service life or number of operations. The use of high-quality pulse valve diaphragm can directly reduce the cost of dust removal equipment.

Structural performance

It is composed of single or multiple layers coated with rubber on both sides, and rubber is not sandwiched with fabric. Film pressing method according to its shape. According to the requirements of use, diaphragms of different rubber materials and different fabrics can be manufactured. The properties of the blends of nitrile rubber and polysulfide rubber for diaphragms, the properties of rubber disks for canvas-shaped diaphragms (commonly called diaphragms), and some silicone rubber, fluorine rubber, and chlorohydrin rubber developed in recent years See below for diaphragm properties.

The working temperature range and pressure range of the diaphragm itself depend on the rubber type, fabric and structure. The diaphragm can work at -50 to 100 degrees Celsius and 0.4 to 0.8 MPa; the fluorine rubber and silicone rubber diaphragm can work at -80 to 232 degrees Celsius. The chlorohydrin rubber diaphragm can work under the pressure of 0.4 ~ 0.8MPa, good air tightness, aging resistance, and the life is equal to the engine overhaul life.