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我们根据本矿的具体情况,设计了一种单头双环反边接头风筒。从1977年下半年使用以来,效果良好。开始在一个风井下山掘进头使用,用双环代替了单环以后,有效风量提高了2.5倍。以前我们掘一对上山,送风距离200米,需要一台11千瓦局扇,用双环接头以后,一台5.5千瓦局扇就够了,而且有效风量比以前大。具体做法如下:1、将原来风筒铁环拆下一头,按其直径大小,再另做一个铁环。两个铁环相距30～40毫米,靠里面将八根φ4毫米铁丝用电焊固定。成为一个整体,如图1。
According to the specific circumstances of our mine, we designed a single-head double-ring anti-side connector hairdryer. Since its use in the second half of 1977, the effect has been good. Beginning in a shaft drilled down the mountain, with a double ring instead of a single ring, the effective air volume increased by 2.5 times. In the past we dug a pair of uphill, air supply distance of 200 meters, requires an 11-kilowatt bureau fan, with a double-ring connector, a 5.5 kilowatts fan is enough, and the effective air volume than before. Specific practices are as follows: 1, remove the original iron tube ring, according to their diameter, then make another iron ring. Two iron ring 30 to 40 mm apart, by which will be eight φ4 mm wire with electric welding. Become a whole, as shown in Figure 1.