The performance of Roots blower is suitable for concentrate dewatering process. The purpose of pressure air for concentrate dewatering is to blow and scrape the filter cake which has been dehydrated by vacuum from the filter cloth. In order to keep the dried concentrate free from water and prolong the flat life of filter cloth, there are specific requirements for the pressure of air source, air volume and gas composition.
In the dewatering process of the mine, roots blower is often used as the pressure air source of vacuum filter, the reasons as follow:
Low energy consumption: compared with water ring compressor, roots blower has better energy saving effect. The water supply system was cancelled. The roots blower does not need water supply, which not only saves water consumption, but also eliminates the possibility of water content in the pressure wind, which is beneficial to dehydration operation.
Stable work, small maintenance: Roots blower can run for a long time with stable performance.
Reliable and easy operation: During continuous operation, the production has never been affected by roots blower fault. Due to the simple operation, there is almost no other maintenance workload except regular supplement of proper amount of grease. Therefore, the operators can adapt to the use process of Roots blower very quickly, and are satisfied with the transformation.
Fuel saving: the fuel consumption of Roots blower is very small. Compared with the water ring compressor, it can at least save oil for cleaning parts.
The performance of Roots blower is suitable for concentrate dewatering process. The purpose of pressure air for concentrate dewatering is to blow and scrape the filter cake which has been dehydrated by vacuum from the filter cloth. In order to keep the dried concentrate free from water and prolong the flat life of filter cloth, there are specific requirements for the pressure of air source, air volume and gas composition.
Roots blower is an important vacuum equipment used in iron smelting furnace and forging furnace. Disadvantages of excessive noise and high wind pressure is always question. The noise of Roots blower is mainly aerodynamic noise, which is caused by periodic constant volume compression, followed by internal clearance leakage, eddy current and mechanical motion. In order to prevent noise pollution and adjust wind pressure, EVP has adopted plastic spraying treatment process to replace the original painting process since 2009. SSR high-efficiency low-noise roots blower with plastic spraying sound insulation cover has been widely used in petroleum, chemical, cement, mining and other occasions, and the noise level can be reduced to 75 ~ 80 dB.
The following are the example requirements in the mine:
Quantity: 8 sets (4 for operation and 4 for standby)
Discharge pressure: 48kpa G
Flow rate of each one @exhaust pressure: 1480m3 / h
The maximum noise distance from the acoustic enclosure is 1m: 75dBA
EVP VACUUM Solution
SSR-150 Roots blower: Imported NSK bearing sprayed with epoxy paint
QTY: 4 for operation and 4 for standby
Flow Rate: 26.1 m3 / min
Pressure Rise: 49kpa abs.
Mine special frequency conversion motor: 380V IP55 F 4, 45KW, 5 ~ 50Hz
Acoustic enclosure: 80mm shell (galvanized sheet) plastic spraying
Auxiliary accessories: Inlet and outlet silencer with filter, axial flow fan, check valve, base, flexible joint, tee, safety valve, filter, etc.
Oil Capacity: 2.1L, Grease:30g/port, Genuine oil: OMARA OIL 220 (SHELL) Industry Gear Oil ISO VG 220 such as MOBIL GEAR 630 (MOBIL OIL)
EVP vacuum three blade roots blower can also be widely used in petrochemical, building materials, electric power, smelting, chemical fertilizer, fish farmers, port, light textile, food, paper making, sewage treatment and environmental protection industries. Welcome to enquiry.
Editor by: Shanghai EVP Vacuum Technology Co.,Ltd
Key words: Roots blowers, three lobes roots blowers, low noise roots blower, mine roots blowers
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