Roots blower Roots blower manufacturers works Roots blower muffler blower muffler room

Roots blower Roots blower manufacturers works Roots blower muffler blower muffler housing 1, the type of blower: The blower is a kind of general machinery, the specific classification as follows: ①: Press impeller different categories: two Roots leaf blower; clover Roots-type blower. Roots blowers are used in the first two-leaf type, with updated technology, air volume 130m3 / min or less gradually replaced clover Roots blower, but 130m3 / min or more is still using the two leaves Roots-type blower. Note: There are three fan impeller blades called clover Roots blower, has two blades called two leaf blower. ②: by use of different categories: common type blower; suction blower; Roots blower special gas. Wherein the suction blower mainly used for vacuum packaging, pumping with a special gas blower mainly used to transport natural gas, coal gas and other flammable gas-tight manner to piston ring seal, to ensure 0 leaks. ③: according to different categories of cooling: air-cooled Roots blower; water-cooled Roots blower. Chosen selection of water-cooled air-cooled Roots blower Roots blower, 65KPA (or more) when the pressure is 65KPA less. Use two-tank type when intensive use a single tank type when the pressure at the 50KPA less pressure in 50KPA (or more); single tank type; two-tank type: ④: Press the fan structure different categories. Roots blower intensive small footprint, the fan outlet at the bottom of the fan outlet silencer connected from the bottom fan outlet with the ground horizontally. Intensive selection generally customer-specific. ⑤: transmissibly different categories: direct drive; belt drive. 2, Roots blower uses: Roots blower applications industry wide, generally applied to the following sectors: environmental protection sewage purification; pneumatic conveying powder particulate material (chemicals, plastics, textile, feed, building materials, cement and other materials industry pneumatic conveying); millet, wheat and other grains transportation; cupola (of dust) forced blast furnace; aquaculture, fish pond oxygen; plating tank gas source; vacuum blower (paper, textiles, food packaging and tobacco industries); special gas delivery (all natural gas, city gas power station supplying coking plant coke oven gas and other transportation). 3, Roots blower features: Content fan, no internal compression, transmission of gas mandatory, with the change of wind pressure changes very little. Output air clean, free of any grease dirt. Inside the enclosure without oil lubrication, and avoid the use of the bearing, gear oil into the structural design skating inside the enclosure. Salient features: air volume, high pressure, low noise, stable performance, durable! 4, Roots blower selection Note: ①: sample corresponds to the speed of the fan models generally do not use the last two high speed, the speed of the fan speed limit, the fan speed limit in the long run could easily lead to fan temperature too high, reduce the fan life. It suggested the use of freshman types of fans in this case. ②: selection pressure in the fuel tank when 50KPA the following single fan can; use two-tank fan when ≥50KPA; use two-tank water-cooled fan when ≥65KPA. ③: direct drive fan: optional 4-pole motor when the speed at 1480rpm when the direct drive; but the speed at 980rpm optional 6-pole motor when the direct drive; also can be directly connected to the drive motor when the choice of frequency. Roots blower noise characteristics of the high-pressure turbine noise at 100 decibels, a larger number of cement fan, fan noise issues are relatively more prominent. Roots blower noise are: intake and exhaust ports of aerodynamic noise radiation; radiation enclosure wall and motor mechanical noise; through solid foundation vibration noise and electromagnetic radiation noise. Roots blower noise characteristics generally associated with traffic, speed, static pressure and other factors related to the fan. As can be seen from the blower noise spectrum in its noise characteristics: (a) the amount of wind noise is a Roots blower in a relatively broad frequency range where the state noise, generally at a low intermediate frequency based, in particular, pull in a wider band. (B) the fan noise is generally the peak flow in the low frequency band, the flow of fans, the sound intensity by the low frequency to high frequency offset. (C) from the fan noise spectrum view, the low frequency peak at 63 Hz, 500 Hz IF peak at between 63 to 500 Hz 125 Hz is low. (D) At higher frequencies, the general is starting from 1000 Hz frequency gradually decreases with an increase in sound pressure level per octave attenuation of about 10 dB. Noise spectrum characteristics (e) suction outlet substantially noise spectral characteristics consistent with its own fan, which is usually a source of low frequency noise, caused by the human auditory though great harm, but is located outside of the sound source, but also a low-frequency It can spread to far away to affect a wide range. (F) leaked because I generally smaller diameter and opening, high-speed air stream impact the surrounding air, making a stable state of the gas tremendous damage and disturbance occurs, forming an outdoor high-frequency noise source.