大香蕉诚成人avspa,少妇自慰扣逼逼,国产老熟女免费一区二区,噗嗤内射骚女人巨屌视频

Welcome [ Wuxi Beirun Blower Manufacturing Co., Ltd. ] official website!

Position:Home > Two leaf Roots blower >

Two leaf Roots blower

The series of products using high precision, high hardness of the synchronous gear, not only the use of fan life is extended to effectively reduce the noise. The series of products using Japan or Germany imported bearings, imported from South Korea or Taiwan, China's rubber belt, so that more reliable product quality. The series of products output air cleaning does not contain any oil and dust, fan seal structure is reasonable, so that oil can not enter the chassis.
Features
1, the impeller with a new curve trajectory, by optimizing the design, the total thermal efficiency and volumetric efficiency to further improve the air volume and pressure particularly good;
2, the box into the exhaust shield shield with helix-type cut into the way, and the top of the rotor to form a triangle into the air outlet, through the rotation of the rotor to open the system to make more balanced operation, so that the fan vibration and noise reduction ;
3, the use of the bearing, gear oil mixed with the internal structure of the box design, so that no cavity in the working chamber, which can get clean gas, do not produce oil smoke caused by air pollution;
4, compact structure, due to the selection of a special bearing and oil seal, improve the service life, and maintenance management is also convenient;
5, impeller and shaft for the split pressure structure, and the impeller between the tiny gap without collision, fan performance lasting, long-term continuous operation.
Working principle
Roots blower for the volumetric fan, the volume of air flow and the number of revolutions, three-leaf impeller once every rotation has two impellers for 3 times suction, exhaust, compared with the two-leaf type, gas pulsation less load changes Small, high mechanical strength, low noise, vibration is also small.
There are two impellers on the two parallel axes. The gap between the impeller and the oval box and the impeller is always kept between the three, and the impeller is surrounded by the rotor and the impeller. And a predetermined amount of gas is conveyed from the sucked side to the excluded side.
The old Roots blower, regardless of the two-leaf type, the three-leaf type, the compression principle is: the rotor tip to the exhaust line to open the moment, the outlet of the high-pressure air flow and compression within the chassis, Compression produces violent pressure changes that make the noise of the fan. The fan studied the spiral shape to eliminate this factor.
和白嫩风韵少妇国语露脸十五分钟 | 免费av在线观看| 美女直播全婐网站免费| 低喘顶弄学长h双性| 中老年妇女的性色视频| BGMBGMBGM胖老太太东北 | 性a欧美片| 国产精品久久久久久精品| 免费真人直播软件APP| 人妻AV无码一区二区三区| 一尘网中国投资资讯网| 亚洲欧洲无卡二区视頻| 国产最新精品sm调教视频| 久久精品国产99久久丝袜| 破苞XXXX出血| 女警察双腿大开呻吟| 灯草和尚在线观看| 日本最新免费二区三区| 久久久久亚洲精品天堂| 国产亚洲色婷婷久久99精品| 啊灬啊灬啊快日出水了| 甜性涩爱在线播放| 国模冰冰02[150P]色综合| 女明星裸体看个够(无遮挡)| 刺激的乱亲小说43部分阅读| 攻调教受扩张尿孔折磨失禁文| 日本少妇做爰全过| 亚洲码国产精品高潮在线| 野外做受又硬又粗又大视频| 777亚洲精品乱码久久久久久| 国产精品久久久久日日迷棕林| 亚洲国产精品久久久久秋霞影院| 久久亚洲精品久久国产一区二区 | 麻豆国产AV超爽剧情系列| 少妇人体metcn| 黑人巨大精品欧美一区二区一| 免费A级毛片18禁网站免费| 中老年妇女加肥加大女上衣| 玩弄chinese丰满人妻videos| 丰满少妇熟女高潮流白浆| 波多野结衣办公室性XXX|