Abstract:
A jaw crusher bucket (50) for attaching to a front-end loader or excavator has a plurality of rock and concrete splitting teeth (56), and jaw means (52, 54) for crushing any large pieces of rubble split from the rock or concrete into smaller pieces. There is a stationary jaw (52) which supports the teeth (56), and a pivotally movable jaw (54) which is able to move by a hydraulic ram (67) to cause the movable jaw (54) to be urged towards the stationary jaw (52) and so crush the rubble.
Abstract:
The invention relates to a material-bed roller mill comprising the following: two adjacently arranged rollers (12, 14; 112, 114; 212; 214) which are oriented in an axially parallel manner in a base state and rotate in opposite directions and between which a roller gap (54) is formed; a foundation (11); two roller mountings (28, 30), in each of which a roller (12, 14, 12, 114; 212, 214) is rotatably mounted, each roller mounting (28, 30) being secured to the foundation (11) in a pivotal manner; and a clamping device which acts on the roller gap (54) and which is arranged outside of the roller gap (54) and connects the two roller mountings together. Each roller mounting (28, 30) has two rockers (32, 34, 36, 38; 132, 134, 136, 138; 234, 238) which are designed as separate components and each of which is arranged at an end of a roller (12, 14, 112, 114; 212, 214) and can be deflected independently of the other.
Abstract:
A blade for a comminution machine includes a first attack face facing in a first direction to perform comminution when the blade is rotated about an axis of rotation in a first direction. The blade also includes a second attack face facing in a second direction to perform comminution when the blade is rotated about the axis of rotation in a second direction substantially opposite to the first direction. A radial exterior of the first attack face and a radial exterior of the second attack face are connected along an arc subtending at least 30 degrees and less than 110 degrees with respect to the axis of rotation.
Abstract:
A blade (2) for a comminution machine of the type having interleaved counter-rotating blades (2) in the case of two shafts (1) or a single set of blades in the case of a single rotating shaft includes a carrier (20) with replaceable teeth (4) and wear plates (3). Each tooth (4) has to tooth tip (121) which projects from it and terminates in a bursting point (121), a forwardly raked receding surface (137) which recedes inwardly from the base of the tooth tip (121) and a receding surface (24) on the wear plates (3A, 3B) which extends inwardly from the base of the tooth (4) to a corner (9) at which it meets a trailing surface (24) on other wear plates (3C, 3D). Shear edges (83) are provided on the teeth (4), on the receding surfaces (24) where they meet the sides (22) of the wear plates (3A, 3D) and on the trailing surfaces where they meets the sides (22) of the wear plates (3C, 3D), and additional bursting points (149) may be provided on the receding surfaces. Two teeth (4) and associated receding and trailing surfaces are provided on each blade (2). The teeth (4) and wear plates (3) are connected to the carrier (20) using fasteners (56, 163) which are not subjected to significant forces of comminution.
Abstract:
A low temperature waste crushing system including a low temperature freezing section for cooling waste material below the cold shortness transition temperature by receiving a supply of refrigeration from a heat sink, and a crushing section for crushing the material cooled in the low temperature freezing section by taking advantage of cold shortness. The low temperature freezing section is configured in dual steps, the preceding step being supplied with the higher temperature refrigeration of the first refrigerating cycle and the succeeding step being supplied with the lower temperature refrigeration of the second refrigerating cycle. The heat sink is configured in a binary refrigeration cycle including a first cycle of ammonia refrigerant for obtaining the first refrigeration temperature, which is higher that the cold shortness transition temperature; and a second cycle of hydrocarbon refrigerant for obtaining a second refrigeration temperature, which is lower in temperature that the cold shortness transition temperature. The device is able to reduce the burden to the environment in comparison with prior art cooling systems.
Abstract:
An electric discharge shock wave generating method and an apparatus therefor, which can break down a large rock and concrete in a short time. The electric discharge shock breakdown method comprises first having positive and negative electrodes (3a, 3b) approach a portion being broken down, the portion being surrounded by a liquid atmosphere or an object being (4) broken down being rendered a liquid atmosphere, and subsequently applying a high voltage pulse between the positive and negative electrodes (3a, 3b) to generate an electric discharge therebetween so that the portion being broken down is broken down by shock waves generated by the electric discharge. In the method, an atmosphere with bubbles is formed in a liquid between the positive and negative electrodes (3a, 3b) before the electric discharge.
Abstract:
Crushing apparatus in which a pivotally mounted first crushing member (24) is provided with a plurality of crushing regions (31, 32, 33, 34, 35) located at various distances from the pivot axis (25), which is offset, so that as the first crushing member is cyclically advanced towards and retracted from a second crushing member (14), successive crushing regions approach the second member closer than the preceding crushing region, to crush material (37) by a combination of compression and shear forces, and a transverse member (52) is provided in the crushing apparatus downstream of the throat (50), to divide the outflow of crushed fragments and hold up oversized material.
Abstract:
A jaw crusher bucket (50) for attaching to a front-end loader or excavator has a plurality of rock and concrete splitting teeth (56), and jaw means (52, 54) for crushing any large pieces of rubble split from the rock or concrete into smaller pieces. There is a stationary jaw (52) which supports the teeth (56), and a pivotally movable jaw (54) which is able to move by a hydraulic ram (67) to cause the movable jaw (54) to be urged towards the stationary jaw (52) and so crush the rubble.
Abstract:
Low temperature waste crushing system composed of a low temperature freezing section (30) for cooling waste material below their cold shortness transition temperature by receiving supply of cold heat from a cold heat source (10) and a crushing section (34) for crushing the material cooled in the low temperature freezing section (30) by taking advantage of cold shortness, so as to enable bringing efficiency to cooling by adopting stepwise cooling and enable effective removal of heat, whereby the cold heat source (10) is configured as a binary refrigerating cycles (11,21) combining the first refrigerating cycle of ammonia refrigerant (11) for obtaining the first cold heat higher in temperature than the cold shortness transition temperature and the second refrigerating cycle of ethane refrigerant (21) for obtaining the second cold heat lower in temperature than the cold shortness transition temperature, the low temperature freezing section (30) is configured as a dual steps cooling section (32,33), the preceding and succeeding step, each of which receives cold heat of different temperatures, and the preceding step of the dual steps cooling section (32) is supplied with the higher temperature cold heat of the first refrigerating cycle (11) and the succeeding step (33) is supplied with the lower temperature cold heat of the second refrigerating cycle (21).
Abstract:
Zum Wiederaufbereiten von drahtmattenbewehrten Gasbetonplatten, insbesondere zum Trennen des Stahlanteils vom Betonteil und zum gezielten Zerkleinern des letzteren, bricht man die drahtmattenbewehrten Formstücke gleichzeitig an mehrere Stellen an und löst den Verbund zwischen Stahlstäben und Beton. Die noch anhaftenden Formstücke werden dann einem Rütteleffekt unterworfen und die restlichen Betonfragmente abgeschüttelt, die Stahlstäbe blossgelegt. Die Stahlstäbe werden abgesondert und die Betonfragmente durch Sieben und Brechen aufbereitet. Einem bewegten Rollgang (10) ist ein mit gleicher Geschwindigkeit bewegtes Piattenband (20) nachgeschaltet, das unterhalb einer lose gelagerten Brechwalze (30) verläuft und zu einer Rüttelwalze (40) führt, unterhalb derer ein Transportband (42) angeordnet ist, das zu einer Siebanlage führt.