The equipment of the pulse bag filter in the sand blasting machine workshop is stable in operation, long in service life, low in filter bag replacement, low in operation cost and high in dust removal efficiency.
喷砂车间布袋除尘器设备 除尘效率统计 1.Statistics of dust removal efficiency of bag dust collector equipment in sand blasting workshop
The dust removal efficiency of the bag filter in the sand blasting workshop mainly depends on the type of filter material. Generally, polyester needle felt fiber filter material is used, and the dust removal efficiency is more than 99%.
2. Pressure loss factors of bag filter in sand blasting workshop
The pressure loss of the bag dust collector in the sand blasting workshop mainly includes the pressure loss of the bag of the dust collector, the pressure loss of the skeleton of the dust collector and the pressure loss of the air inlet and outlet, mainly the first two pressure losses.
Venturi pressure loss increases in proportion to the square of the velocity of the passing airflow. Therefore, when the resistance of the dust collector is 1176.8Pa (120mmH2O), the wind speed in the venturi tube cannot generally exceed 4m / min.
The selection of the filter wind speed of the bag filter of the sand blasting machine is related to the blowing pressure, pulse time, pulse period, dust properties, gas dust concentration and filter bag length. When the dust concentration is less than 15g / m3, the filtration speed is 1.5m / min. If it exceeds, it should be reduced. Therefore, in the sand blasting industry, when the first-level bag filter is used, the filtration speed should be less than 1m / min. .
(1) Pulse time: generally not too long, too long will increase the compressed air consumption, generally 0.1 ~ 0.2s.
(2) Blowing pressure: its size directly affects the dust removal effect. Generally, the blowing pressure is 6-7 kg / cm2, but in actual use, this pressure cannot be guaranteed, so it affects its dust removal effect.
(3) Pulse period of bag filter in sand blasting workshop: It directly affects the resistance of bag filter, so the pulse period is generally selected to be 45 ～ 60s.
Botou Nuohe Environmental Protection Equipment Co., Ltd. specializes in producing bag dust collectors for sand blasting workshops. If you have dust collector equipment in this industry that you need to purchase, you can contact Novo's sales manager, Manager Zhao, 18034170669. We will provide you with a free solution. Quotation and selection.