Abstract:
Screening apparatus (1) comprising at least two screen decks (3) arranged one over the other as an assembly, and a feed unit (7); the feed unit (7) comprising at least one distributor (8) having one distributor inlet (81) and at least two distributor outlets (82-1, 82-2) arranged to feed one screen deck (3) each, wherein the feed unit (7) further comprises a conduit arrangement comprising a splitter opening arrangement (83) comprising openings (84) arranged in an extension perpendicular to a feed flow direction (F), and which openings (84) have conduits that are divided to either be in communication with a first distributor outlet (82-1) or with a second distributor outlet (82-2) of the at least two distributors; and wherein the conduit arrangement is configured to compel the feed to spread to the full width of the feed unit before entering the splitter opening arrangement.
Abstract:
An apparatus includes a vibratory separator having a frame and a screen, a lift housing disposed proximate the vibratory separator, and a lift system disposed in the lift housing and configured to selectively engage a portion of the vibratory separator to lift the portion of the vibratory separator. A method includes actuating an actuator and vertically extending a lifting member, contacting an alignment device coupled to the lifting member with a corresponding alignment device coupled to a portion of a vibratory separator, and raising the portion of the vibratory separator to provide access to a screen of the vibratory separator.
Abstract:
A method of controlling the vibration of a vibratory separator, the method including providing a vibratory separator having a frame and a plurality of force generators coupled to the frame and a control unit operatively connected to each of the plurality of force generators, and independently controlling each of the plurality of force generators. Independently controlling each of the plurality of force generators controls a motion profile of the vibratory separator.
Abstract:
A vibrating grid shaft assembly (10) for use in a screening plant having opposed screen frame sides (11), and which comprises: a shaft (12) which is intended to extend between the frame sides (11); stubshafts (13) projecting from each end of the shaft (12), and each adapted to be mounted in or on a respective screen frame side (11); a respective bearing (14) mounted on each stubshaft (13) and intended to be located inboard of the adjacent screen frame side (11), and defining a rotational axis (20) for the shaft (12); and, a respective load (15) mounted eccentrically with respect to the rotational axis (20) and incorporated within the shaft (12) adjacent to each stubshaft (13) and so as to be located inboard of the adjacent screen frame side (11).
Abstract:
A circle throw screening machine for screening particulate material according to size is described. The machine comprises a housing (2) having a longitudinal aspect, an upper perforated deck (7), a frame (3) configured for mounting the housing, and a suspension system (4) for mounting the housing to the frame and configured to allow vibration of the housing relative to the frame. Three rotatable unbalanced drive shafts (5) are coupled to the housing (2) and configured to vibrate the housing in response to rotation of the drive shafts, wherein the three rotatable unbalanced drive shafts are equally spaced along the longitudinal aspect of the housing. A drive mechanism (6) is coupled to the unbalanced drive shafts (5) and configured to effect synchronous rotation of the three drive shafts in the same direction. The machine can achieve high acceleration of 6.4G and 9.7G through the use of two or three parallel shafts respectively (NB. 2 shafts is suffice for a G of 6.4 and 3 shaft is suffice for 9.7G) distanced from each other by a distance of about one quarter of the length of the deck, configured for synchronous rotation.
Abstract:
The invention relates to a vibratory system (7) for a screening and/or feeder machine, the vibratory system (7) comprising shaft lines (1, 2), each shaft line (1, 2) having an unbalance module (12, 21), said vibratory system (7) also having a drive device configured to drive the shaft lines (1, 2) in rotation in synchronous manner and in the same direction. Said vibratory system (7) also comprises an angle modifier device (4) configured to modify the angular position of the unbalance module (21) of one shaft line (2) relative to the angular position of the unbalance module (12) of the other shaft line (1) or of one of the other shaft lines.
Abstract:
Das Verfahren zur Fraktionierung von Schüttgut umfasst den Schritt des Zuführens des Schüttguts auf zumindest ein Sieb in einer Vorrichtung (1) umfassend zumindest ein Gehäuse (10) mit einem Innenraum zur Aufnahme des Siebes. Das Gehäuse (10) weist zumindest einen Einlass (13) zur Zuführung des Schüttguts auf und zumindest einen Auslass zur Abführung von zumindest einer Fraktion des Schüttguts. Das Gehäuse (10) weist ein Dach (15) und einen Boden (16) auf, wobei auf dem Dach und dem Boden zumindest jeweils eine Schwungmasse (17) angeordnet ist. Die Vorrichtung (1) weist zudem zumindest ein mechanisches Kopplungsmittel auf, wobei die Schwungmassen mittels des ausserhalb des Innenraums angeordneten mechanischen Kopplungsmittels (21) mit einander gekoppelt und antreibbar sind. Die Vorrichtung (1) weist ein Antriebsmittel zum antreiben des mechanischen Kopplungsmittel auf. Das Verfahren umfasst zudem den Schritt des Versetzens des Gehäuses (10) in eine schwingende Bewegung mittels Antreiben der Schwungmassen. In einem weiteren Verfahrens schritt erfolgt das Fraktionieren des Schüttguts mittels des Siebes. Anschliessend erfolgt ein Abführen zumindest einer der Fraktionen des Schüttguts durch den Auslass aus dem Gehäuse.
Abstract:
Un système de génération de vibrations pour un crible comprend deux axes à balourd parallèles (10a, 10b) tournant en synchronisme; deux moteurs (20a, 20b) agencés pour entraîner respectivement les deux axes à balourd de manière indépendante mécaniquement; un premier variateur (CFW) agencé pour commander un premier (20a) des moteurs, ce variateur étant configuré dans un mode maître où il communique sur une liaison externe (COMM) la position angulaire du premier moteur; un deuxième variateur (CFW) agencé pour commander le deuxième moteur (20b), connecté à ladite liaison externe (COMM) et configuré dans un mode esclave où il asservit la position angulaire du deuxième moteur en fonction de la position angulaire véhiculée sur la liaison externe; et des lignes d'alimentation en courant continu (DC-Bus) communes aux variateurs.
Abstract:
A vibratory apparatus (102) including a trough (160) having one or more decks (104.106), with an inlet end (152) and an outlet end (154), a first plurality of isolation springs (110) disposed between the trough (160) and ground (112), and a two-mass, sub-resonant frequency exciter (114) supported on the trough (160). The trough (160) and the exciter (114) move 180-degrees out of phase with each other. The apparatus (102) also includes a dynamic balancer (100) including a plurality of isolation springs (118) disposed between the exciter (114) and ground (112).