Einschraubventil

The invention concerns a screwing in valve with an essentially tubular screw-in part, which an external thread would valve-take up for screwing in to one exhibits, and with to the screw-in part a bordering, with this einstückigen flange-hurry, which with a central drilling to depresses a valve stem is provided, whereby that forms screw-in part a seat for a poppet steered by the valve stem and within the range between the seat and the external thread radial fluid drillings exhibits, which are covered by a cylindrical filter screen applied on the exterior of the screw-in part. Such screwing in valves are for example from the JP 08-270820 A well-known and in the control of hydraulicdriven remote cylinders for shears tables, of Hubund swivel cylinders for joint loading ramps od.dgl, are used. The control is switched on for capacity of the remote cylinder thereby between hydraulic pump and collector on the one hand as well as on the other hand and works in the simplest case than delockable check valve with separate drain way. With such valves Fluidauslaßund represents - problem zones to inlet ports, because at these openings planned filter deforms and decomposes with longer actual working time under the medium printing. The invention sits down to the goal of avoiding this disadvantage and reaches this by the fact that the filter screen falls itself at bars of the screw-in part, which in circumferential direction between the fluid drillings located on a wreath/ring on the level the same extends, and that a Fluideinoder - omit-hurry is intended, which has an essentially tubular body with an external thread section for screwing in into a front side opening of the screw-in part, whereby the Einoder omit-hurry, as actually admits at its free front end closed and this end neighbouring is provided with radial printing fluid depressing drillings, and that the kranzförmig arranged Druckf] uiddurchtrittsbohrungen from one on the exterior of the Fluideinoder - discharge opening part applied cylindrical filter screen is covered, whereby this filter screen away likewise on in circumferential direction running bars pushes, which extend between the printing fluid depressing drillings of the Fluideinoder of discharge opening part in the level of the printing fluid depressing drillings. Each danger of a deformation of the filter body under the fluid printing is rear-stopped by this construction and a perfect valve enterprise is guaranteed, because a contamination of the valve inside is prevented. The invention is more near described on the basis a remark example of the screwing in valve according to invention represented in the design in the axial section. The screwing in valve represented in the figure sits down essentially from a tubular screw-in part 1, at this adjacent flange-hurries 2, in flange-hurries 2 screwed in actuation equipment 3 and in the screw-in part 1 arranged, to axially adjustable spindle case 4 together. That screw-in part 1 is with an external thread for screwing in into one (not represented) would valve-take up provided, to the fluid lines flows, which with (described later) the valve connections in the screw-in part 1 in this way into fluid connection step. That flange-hurry 2 is externallaterally in form of a hexagon nut trained, in order to make the attack possible of a tool. Inside the spindle case 4 a valve stem 5 is axially adjustably stored, which the actuation equipment 3 affects. The latter consists of two cores 6 and 7 from magnetizable material, by which a a core is firmly installed the 6 in the housing of the actuation equipment 3 and other core 7 is linked up to which in this housing sliding led and against the core 6 by means of a compression spring 8. (Not represented) a solenoid coil is pushed onto the housing of the actuation equipment 3 and effectuation with electrical Anspeisung an attraction of the cores 6 and 7 and thus a raising of the valve stem at the inside of the screw-in part 1 is trained a ring edge g, which forms the valve gap of a delockable servo-controlled check valve together with the kegelstumpfförmigen exterior surface 10 of the spindle case 4 stored axially adjustably on the spindle 5. The spindle case 4 is linked up with the help of a compression spring not shown against a conical Spindelende 13, which locks a front drilling 14 in the spindle case 4 in the closing position of the valve. The drilling 14 connects the pressure chamber on the one side the valve gap 9, 10 with the inside 16 of the spindle case 4, which stands over a further drilling 15 with the pressure chamber on the other side of the valve gap 9, 10 in connection. The pressure chamber above RK 411,186 B of the valve gap 9, 10 represents 1 one of the power ports of the valve over radial fluid drillings 17 in the screw-in part, located on a wreath/ring. As the design shows, are taken off the fluid depressing openings 17 of the screw-in part 1 of on the exterior of the screw-in part 1 applied cylindrical filter body 18, which pushes at victories 19 away of the screw-in part 1, which in circumferential direction between the fluid drillings 17 extends. Furthermore a Fluideinoder is with the valve shown at the lower front end - omit-hurry 20 intended, which has an essentially tubular body with an external thread section for screwing in into a front side opening of the screw-in part 1. Fluideinlaßoder - omit-hurry 20 is closed at his free front end and this end neighbouring with radial, kranzförmig arranged printing fluid depressing drillings 21 provided, which of one on the exterior of the Fluideinoder - discharge opening part of 20 applied cylindrical filter screen 22 are covered, at central bars 23 between the printing fluid depressing drillings 21 of the fluid A OR DISCHARGE OPENING PARt of 20, getting lost in circumferential direction, supports. In the enterprise of the valve as check valve the spindle 5 is raised, i.e. the check valve unblocking, continues the pressure at the fluid drillings 17 over the drillings 15 and 14 up to the lower surface of the spindle case 4 and lifts due to case geometry the case 4 against Kraft of the feather/spring from their valve seat at the ring edge 9. If the valve is used against it as directly steered or servo-controlled shuttle valve, e.g. as sinking valve, with changing direction of flow of the printing fluid, then the printing fluid diverts over the fluid drillings 17 to and over the printing fluid depressing drillings 21. In both directions of flow the filter screen arrangements shown cause that a deformation of the filter under the printing media ensures prevented and a perfect filtering of the printing fluid, i.e. an entrance is prevented by foreign bodies into the valve.