发明名称 |
Method of and apparatus for applying a sprayed concrete layer to a surface |
摘要 |
The apparatus for applying a sprayed concrete layer to a surface comprises a concrete feed pipe for a pumpable and sprayable concrete mixture made with water, a sprayer and a compressed air feed device for compressed air under a pressure of several bar from a compressed air source. The concrete feed pipe opens into the sprayer which has a compressed air connector device. The concrete mixture is sprayable with the compressed air. The compressed air feed device comprises a register including several compressed air chambers which connect to and open into the compressed air connector device. The individual compressed air chambers are connected with the help of control valves in alternating sequence to a power silo for loading a powdery concrete additive, particularly silica powder, or for blowing through a compressed air partial flow.
|
申请公布号 |
US4824022(A) |
申请公布日期 |
1989.04.25 |
申请号 |
US19880153144 |
申请日期 |
1988.02.08 |
申请人 |
HOCHTIEF AKTIENGESELLSCHAFT VORM. GEBR. HELFMANN |
发明人 |
HILLEMEIER, BERND;BROCKMANN, GUENTER;POHL, RICHARD |
分类号 |
E04G21/02;E04F21/12;(IPC1-7):B28C5/46 |
主分类号 |
E04G21/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|