| 摘要 |
Device with container for concrete and other viscous substances with a container section 1 made from a hard material, and a sack 10 situated inside, made from a soft, flexible material. The sack opening is fixed approximately at the central part of the container section by means of a holder 9 and can be turned inside out between a first position which essentially conforms to the inside of one end of the container section and a position in which it essentially conforms to the inside of the other end of the container section. Two spaces of variable volume are thus formed on the two sides of the sack, a first space 11, to which is connected a pump 13 for a fluid, and another space 19 which is intended to contain the concrete and to which is connected a filling point and an outlet 5. The sack 10 can, during filling, conform to the inner walls at one end of the container section so that the first space 11 is small in volume whilst the other space 19 is large in volume. During emptying the fluid is pushed into the first space 11 by means of the pump 13 so that the sack 10 is pressed in the direction towards the other half of the container section and pushes the substance out through the outlet 5. The container section can rotate around an essentially horizontal axis 15, so that during filling the filling point 8 can be turned upwards. When emptying the outlet 5 can be directed downwards. <IMAGE> |
