The dust extraction arm providers closed a chamber lifting valve to cut off the filter air flow, and then opened the electromagnetic pulse valve, compressed air in a short time in the upper box does not slow expansion, into the filter bag, so that the filter bag expansion deformation and vibration, and under the action of reverse airflow erosion, Dust attached to the outer surface of the filter bag is stripped and dropped into the ash hopper. After the cleaning is completed, the electromagnetic pulse valve is closed, the lifting valve is opened, and the chamber is restored to the filtering state. Cleaning each chamber in turn, from the beginning of room cleaning to the next cleaning for a cleaning cycle. The dust trapped by the filtration and ash cleaning work falls into the ash hopper, and then is centrally discharged by the ash discharging device at the mouth of the ash hopper.

The following is the selection principle of dust extraction arm providers:

1. Selection of filtering speed of dust extraction arm providers: Filtration speed is a key factor in the selection of dust extraction arm providers, which should be based on the properties of smoke or dust, application occasions, dust particle size, viscosity, gas temperature, water content, dust concentration and different filter materials. When the dust particle size is fine, the temperature and humidity are good, the concentration is large, and the viscosity should be low. Such as ≤1m/min; On the contrary, the optional high value is generally not more than 1.5m/min. For large dust size, normal temperature, dry, non-viscous, and concentration, 1.5 ~ 2m/min can be selected. When the filtration speed is selected, the net filtration wind speed should not be higher than the above value when reducing the filtration area of one room (when cleaning).

Second, filter materials: should be based on the temperature of the dust gas, water content, acid, alkali properties, dust viscosity, concentration and grinding properties, such as height and size to consider. Generally, when the water content is small and there is no acid, it is selected according to the temperature of the dust containing gas. When the temperature is normal or ≤130℃, 500 ~ 550g/m2 polyester needle felt is commonly used. Use aramidst Nomex needle felt or 800g/m2 glass fiber needle felt or 800g/m2 double glass fiber fabric or Flumas [FMS] high temperature filter material (fluorine gas can not use glass fiber material). When the water content is large and the dust concentration is large, it is appropriate to choose water, oil filter material (or anti-condensation filter material) or laminating filter material (the base cloth should be water-treated needle felt). When the dust-containing gas contains acid and alkaline and the gas temperature is less than 190℃, Ryton (polyphenylene sulfide) needle felt is often used. When the gas temperature is ≤240℃ and the sex requirement is not too high, P84 (polyimide) needle felt is selected. When the dust-containing gas is flammable and explosive gas, the use of tapefibre needle felt, when the dust-containing gas has both water and flammable and explosive gas.

Control instrument: dust extraction arm providers use PLC microcomputer program control instrument for dust extraction control, divided into fixed pressure (automatic), timing (automatic), manual three control methods. Constant pressure control: according to the set pressure difference control, dust collector pressure difference over the set value, each room automatically clean again. Timing control: According to the set time, each room is cleaned once every other cleaning cycle. Manual control: The on-site operating cabinet can manually control the automatic cleaning of each room in turn, and can also be cleaned for each room. The control mode is selected by the user, and when the user has no requirements, the supply is controlled according to the timing.

dust extraction arm providers https://www.kaisenfilter.com/Suspended-Suction-Arm