Abstract: The present invention provides a valve assembly, comprising a multiway valve (9) with a fitting surface (10) and a fluid manifold (7) with a mounting surface (8), wherein an opening of at least one branch channel lies opposite an opening of a respective channel of the multiway valve (9) in order to provide a fluid connection between the fluid manifold (7) and the multiway valve (9), and with an elastic sealing plate (1) with a plate-like body and through holes (2a-2e, 3a-3d) for the openings disposed between the mounting surface (8) and the fitting surface (10) and covering approximately completely the fitting surface (10) of the assigned multiway valve (9), wherein each through hole (2a-2e, 3a-3d) is surrounded by an annular sealing lip (4) formed on the elastic sealing plate (1), wherein the elastic sealing plate (1) is provided with an outer hygienic sealing profile (5) formed along the edge (6) on both sides of the sealing plate (1) in order to avoid a capillary entry of dirt and bacteria into the area be

Abstract: A multiway valve for switching the fluid flow of a pressure medium comprising a valve housing (1) with several ports (2a, 2b, 3a, 3b, 4a, 4b) for the pressure medium which are connected with an inner valve hole (5) in which a valve spool (6) for switching the fluid flow between said ports (2a, 2b, 3a, 3b, 4a, 4b) is slidely disposed, and which comprises at least one cap element (7a, 7b) for sealing said valve hole (5) on at least one end side, at least one piston (11) for axially moving said valve spool (6) in a desired switching position which corresponds with a drive chamber (12) formed in the end section of the valve hole (5) to and from which a control fluid is supplied and ejected respectively in order to move said piston (11), wherein said at least one cap element (7a, 7b) comprises at least one through bore (18a, 18b; 25) which in the mounted state of the cap element (7a, 7b) is substantially disposed in a right angle to the axis of the valve hole (6), and wherein said through bore (18a, 18b; 25) corre

Abstract: A method and a device for controlling the movement of a combined alumina feeding and crust breaking chisel in an aluminum production cell, wherein the chisel is moved downwards and upwards by means of a pneumatic cylinder which is alternatively fed with pressurized air, wherein electrical contact between the chisel and the melt is detected when the chisel reaches the melt, wherein it is monitored whether said electrical contact has been reached within a predetermined time interval, and if not, air at a second, high, pressure is fed to said first, and wherein air at high pressure is fed to the second side of the cylinder after said electrical contact has been established so as to quickly withdraw the chisel from the hot melt in order to minimize heat transfer from the melt to the cylinder.

Abstract: A multiway valve for controlling the flow of a pressure medium from at least one delivery port to at least one exhaust port or supply port includes a valve housing with a substantially cylindrical axial bore with a plurality of annular steps forming inner chambers for connecting the ports. The multiway valve further includes a spool arrangement for switching the flow of the pressure medium. The spool arrangement includes two valve spools arranged coaxially and in tandem in the axial bore. The two valve spools are independently axially slidable within the axial bore. Each valve spool is associated with at least one driving piston for axially shifting the valve spool in response to a control pressure. A common exhaust chamber is arranged next to the inner ends of the valve spools in the center of the axial bore to provide a connection to the at least one exhaust port.

Abstract: A device (1) for providing a working means (2) with a linear movement during simultaneous energy and/or signal supply over a supply conduit or conduit(s) (10,18), includes a linear motor (3,4), an elongated rod means (16) onto which the working means (2) is arranged. The invention is distinguished by the linear motor being of a kind including a movement transferring means extending radially sideways from the motor, and being connected to the rod means, that the rod means (16) comprises a longitudinal channel for the reception of said supply conduit, and that a linear guide (8) for the rod means (16) is fixedly attached to the linear motor.

Abstract: A valve manifold device for mounting pressure fluid valves (2) on a surface comprising a valve interface (A—A) and including channels (7-7′,8) for supply and possibly return fluid, wherein channels are arranged for leading fluid to and from the valve interface and thereby the different valves, is distinguished in: that the manifold device (4) comprises a manifold interface (B—B) on a side separate from the valve interface (A—A), that each connecting channel for supply fluid includes a first portion (10,10′) between a channel (7) and the manifold interface and a second portion between the manifold interface (B—B) and the valve interface (A—A), and that a selectable modular body (5,5′,5″,30) is provided for connecting (12,32) said portions or to block (14,14′) the first portion and lead on the second portion, or to block both portions.

Abstract: An ejector unit (1) is mounted on a conventional valve manifold (10) with a manifold pressurised air supply connected to an ejector (4) through channels (15, 16) and a first pilot valve (3). A suction channel (20) and a return air channel (22) are connected through manifold (10) to outlet ports from the ejector (4) suction chamber (17) and outlet nozzle (18′) respectively. The ejector unit (1) is mounted through face (8) onto manifold (10) using the same hole pattern as for valves connected to the manifold.

Abstract: A device in an end wall (3) of a pressure fluid cylinder (1) of the kind including a cylinder tube (2), which is provided with a longitudinal slot and having a transfer means for transferring a movement from a moveable piston (11) inside the cylinder through the slot, and which is sealed by at least an inner (4) sealing band, wherein the device is arranged for fastening the end of the sealing band (4) in the cylinder end wall (3). The invention is distinguished by the end wall (3) being provided with an axially extending recess (5), which includes a first portion (9) adapted for axial reception of the inner sealing band and a second portion (10) for axial reception of a screw (6), said screw being adapted to engage with part of its thread a sealing band (4) which is inserted into the recess (5).

Abstract: Pressure fluid cylinder including a slot type cylinder tube which is shielded and sealed by an outer (11) and an inner (10) sealing band, a piston (2,5) which is arranged inside the tube and a transfer means (3) for transferring the movement of the piston to the outside of the cylinder tube. The invention is distinguished by the piston comprising a central body (2) and two piston end units (5) which surround the respective end thereof and support directly against the body, said units comprising guide elements (17) for the piston inside the cylinder, and by each piston end unit (5) comprising an integral piston sealing member seat (7).

Abstract: A device in an end wall (3) of a fluid pressure cylinder (1), of the kind including a cylinder tube (2) which is provided with a longitudinal slot through which a transfer element is arranged to transfer movement from a piston being moveable inside the cylinder and which is sealed through at least an inner (8) sealing band, said device being arranged for fastening of the inner sealing band (8) in the cylinder end wall, is distinguished by a fastening unit (4) which is insertable and lockable inside a cavity in the end wall (3) and which is comprised of a profile body (4) having a clamping jaw (5) for holding the inner band (8), said jaw being displaceable by deformation (at 6) and being arranged to co-operate with a first tightening screw (10) for obtaining the displacement.

Abstract: A fluid pressure cylinder (1) includes two cylinder end walls (6',6"), a cylinder tube (2) and a piston (3), which is axially movable inside the cylinder tube, wherein at least one of the cylinder end walls is provided with an outward housing portion (7;60) and, located therein, an inward insert portion (8;61) which comprises a portion of at least one fluid channel belonging to the cylinder. The cylinder is distinguished in that the housing portion axially contacts the cylinder tube under force transmission, and that the insert portion includes an integral valve seat (12,16,22") of a fluid valve which is located in said fluid channel.

Abstract: The invention concerns a device in an piston cylinder aggregate including a valve element (8) which comprises a valve body (9) for choking the flow in a fluid channel (6) in co-operation with a valve opening (7), wherein the device is arranged in a bore (11) in an end wall (1) of the piston cylinder aggregate and wherein the valve element (8) is provided with a setting means (10) to allow adjustment from the outside of the end wall.

Abstract: A valve device (1) for fluid flow control includes two independent valves comprising two movable valve bodies (4, 5) within two valve spaces (V1, V2), wherein each valve body is controllable against the force of a return spring (7, 8) acting thereon. The invention is distinguished inthat the valve spaces (V1, V2) are located axially with respect to each other in one common housing (2, 3),that the housing between the two valve spaces is provided with an essentially fixed separating means (6) against which the two return springs are resting,that the housing comprises a common discharge channel (11) which communicates with the two valve spaces, andthat the device comprises a double one-way valve function (9, 10) in the area of the discharge channel in order to prevent unintentional flow actuation resulting from overflow between the valve spaces.

Abstract: Rotary actuator (1) including a housing (2), which defines a working chamber (3) with at least partially circular section for actuation with a pressure fluid, a pivoting piston (5) which is sealingly arranged against the inner wall of and pivotable between two end positions in said working chamber, said housing being divided through the working chamber perpendicular to its symmetry axis.

Abstract: A rotary actuator (1) comprising a housing (2), which defines a working chamber (3) for actuation with a pressure fluid and having at least partially circular section, a pivoting piston (5) which is arranged sealingly against the inner wall (4) of and rotatable between two end positions in the working chamber, is featured in that the pivoting piston (5) itself is pivotally supported in bearings (16) which are arranged in the housing (2) axially at each side of the working chamber (3), and wherein it comprises means for cooperation with an external rotary shaft, whereby the housing (2) on at least one of its end walls is adapted so as to be contacted against and be fixedly fastened to a corresponding end wall portions of a second rotary actuator housing (2), and whereby these housings are fixable to one another in such a way that the axes (X) of the pivoting pistons of the respective housings are coaxial and that the pivoting pistons thereby are capable of affecting one common outgoing shaft.

Abstract: A rotational position detector device (20), which is fastenable to a rotary actuator (1) of the type comprising a rotary motor (3,5) inside a housing (2) and a rotary shaft extending therefrom, a turning element (21) adapted to be rotationally fastened to the rotary shaft, said turning element being detectable by at least one position sensor (23), which is adapted to be adjustably fixed with respect to the housing (2). The device is provided with a socket portion (25) which is rigidly connected to the housing and coaxial with said shaft and at least one sensor holder (24) which is rotatably attached to said socket portion and adjustably fixable in chosen angular positions by means of locking cooperation between a resilient engagement means (26,27) on the sensor holder and a surface (30) which is provided with engagement irregularities.

Abstract: In a device for stroke end cushioning and speed regulating the movement of a piston (3) in a fluid pressure cylinder (1,2) a common adjusting means (9) is arranged for simultaneous setting of the throttle means (7,8) for regulating the stroke end cushioning as well as the piston speed, for the purpose of avoiding very time consuming adjustment. In connection with the setting of the adjusting means (9) the ratio between the flow areas of the respective throttle means is held within the range of 10-60%. In the most uncomplicated embodiment the common adjusting means (9) may be comprised by a screw being fixed to the valve bodies of the respective throttle means.

Abstract: Electric connecting device for electrically controlled, so called pilot valves (21-25) connected to a corresponding number of valves (1-5) in a modular valve array. Each pilot valve has equally placed contact pins (26,27,28), which are connected to a common, flexible connecting cable (29) with a plurality of conductors (29) over an electric connecting module (30). Each connecting module (30) is constituted by a coupling plate (32) provided with on the one hand contact sockets (33,34,35) for connection to said contact pins (26,27,28) of the respective pilot valve, and on the other hand a multipolar contact means (37), which is connectable to a corresponding cable contact means (38), which is connected to conductors of the common connecting cable (29). The coupling plate (32) is provided with an array of preferably controllable electrical connections (36) for the desired connection between said multipolar cable contact means (37) and said contact sockets (33,34,35).