A dome cover assembly for automatically opening and closing a through-opening. The dome cover includes at least one reach-around element on one of a cover and flange. The reach-around element at least partially encloses, in a first rotational position, the other of the cover and the flange on a side facing away from the first element. The other of the cover and flange has a recess and, in the first rotational position, the reach-around element engages behind the recess in a first distanced position of the cover and the flange. The reach-around element does not engage behind the recess in a second closer position of the cover and the flange.

A liquid storage vessel having a base with a bottom and an interior floor; a continuous side extending vertically from the base and having an interior surface, the bottom and continuous side each including an internal layer and an external layer separated by a material barrier, and configured such that the interior layers form an inner containment liner, and the external layers form a continuous exterior structural shell enclosing the inner containment liner. A top is affixed to the continuous side and has an interior ceiling. Access to the tank interior is provided by one or more manways. Mounting and connecting structures enable the tanks to be stacked directly atop one another and then structurally connected. The exterior structural shell is fabricated from high performance fiber reinforced concrete, and the inner containment liner is fabricated from a geopolymer concrete blend.

In a batch weighing/supply device for a raw material such as a granular material, a primary height adjustable scraper 17 that reduces the quantity of conveyed raw material when lowered is provided on an upstream side of a discharge port 6 in an annular passage 5, a secondary height adjustable scraper 19 that further reduces the quantity of conveyed raw material, after the quantity has been reduced by lowering the primary height adjustable scraper, is provided on a downstream side of the primary height adjustable scraper and directly adjacent to the discharge port on the upstream side thereof, control means 37 is provided to reduce the rotation speed of rotary blades 8 and 10 to a first speed, which is lower than a normal speed, when the primary height adjustable scraper is lowered and reduce the rotation speed of the rotary blades to a second speed, which is lower than the first speed, when the secondary height adjustable scraper is lowered, and a sliding gate 24 capable of opening and closing a raw material drop-down path is provided in a chute unit provided under the discharge port.

A liquid storage vessel having a base with a bottom and an interior floor; a continuous side extending vertically from the base and having an interior surface, the bottom and continuous side each including an internal layer and an external layer separated by a material barrier and configured such that the interior layers form an inner containment liner, and the external layers form a continuous exterior structural shell enclosing the inner containment liner. A top is affixed to the continuous side and has an interior ceiling. Access to the tank interior is provided by one or more manways. Mounting and connecting structures enable the tanks to be stacked directly atop one another and then structurally connected. The exterior structural shell is fabricated from high performance fiber reinforced concrete, and the inner containment liner is fabricated from a geopolymer concrete blend.

A liquid storage vessel having a base with a bottom and an interior floor; a continuous side extending vertically from the base and having an interior surface, the bottom and continuous side each including an internal layer and an external layer separated by a material barrier and configured such that the interior layers form an inner containment liner, and the external layers form a continuous exterior structural shell enclosing the inner containment liner. A top is affixed to the continuous side and has an interior ceiling. Access to the tank interior is provided by one or more manways. Mounting and connecting structures enable the tanks to be stacked directly atop one another and then structurally connected. The exterior structural shell is fabricated from high performance fiber reinforced concrete, and the inner containment liner is fabricated from a geopolymer concrete blend.

The invention relates to a dispensing mandrel (1) for dispensing material from a flexible bulk goods container, the dispensing mandrel (1) comprising a hollow body (2) which has an upper and a lower opening surface. A tip adjoins the upper end of the hollow body (2), leaving the upper opening of the hollow body (2) at least partially free. The tip is formed by at least three struts (3) which are planar, radially oriented elements which each abut the inner face (16) of the hollow body (2) with the lower outer edge (15) thereof, and meet at the upper end of the dispensing mandrel (1), thereby forming a tip. At least one transverse strut (12), which abuts against the hollow body (2) with the lower edge (13) thereof, projects from each strut (3).

A pressurized closure assembly is provided which has a connector assembly to allow improved application of torque in limited space conditions to rotate a head away from the hub of the closure assembly.

A dome cover assembly for automatically opening and closing a through-opening. The dome cover includes at least one reach-around element on one of a cover and flange. The reach-around element at least partially encloses, in a first rotational position, the other of the cover and the flange on a side facing away from the first element. The other of the cover and flange has a recess and, in the first rotational position, the reach-around element engages behind the recess in a first distanced position of the cover and the flange. The reach-around element does not engage behind the recess in a second closer position of the cover and the flange.

A liquid storage vessel having a base with a bottom and an interior floor; a continuous side extending vertically from the base and having an interior surface, the bottom and continuous side each including an internal layer and an external layer separated by a material barrier, and configured such that the interior layers form an inner containment liner, and the external layers form a continuous exterior structural shell enclosing the inner containment liner. A top is affixed to the continuous side and has an interior ceiling. Access to the tank interior is provided by one or more manways. Mounting and connecting structures enable the tanks to be stacked directly atop one another and then structurally connected. The exterior structural shell is fabricated from high performance fiber reinforced concrete, and the inner containment liner is fabricated from a geopolymer concrete blend.

A multi-blade dosing valve comprising the following elements: a valve body provided with a central opening; a plurality of shafts, each provided with a respective blade, which extend transversely to the central opening; the blades being able to close, at least partially, the central opening; a motor unit which causes the opening/closing of the blades; and vibrators to set in vibration the shafts and the blades. The multi-blade dosing valve comprises an independent vibrator for each shaft.