There can be one, two or three joints of casing used for this purpose.
2
浮箍是放置于浮动接头之上的,而浮鞋则是放置于浮动接头之下,以防止水泥浆回流到套管内。
A float collar is placed at the top of the float joint and a float shoe placed at the bottom to prevent reverse flow of cement back into the casing after placement.
3
所述浮动称重筒与无轴螺旋机本体的出料口通过软接头连接。
The floating weighing barrel is connected with the material discharging opening of the non-axle spiral conveyor main body through a flexible connector.