Abstract: Feed device (100) for a shaft furnace (101), with a revolving chute (107, 111) comprising a cylindrical basic body (107) that can be driven so as to rotate about a first, substantially vertically oriented axis of rotation (A1) with a first drive mechanism (119) and a feed chute (111) that is fixedly attached to an outlet (107a) of the basic body and can be rotated therewith, in which the feed chute is composed of an upper part (113), which is adjacent to the outlet of the basic body and extends longitudinally at an angle to the first axis of rotation, and a lower part (115), which is rotatably connected to the upper part and comprises a second drive mechanism (127) for rotation about a second, substantially vertical axis of rotation (A2) spaced apart from the first axis of rotation.

Abstract: A water cooled hot air slider plate with a cooling channel, through which a cooling medium flows. A seal extends over the perimeter of the plate, both sides of the plate with the exception of the seal are joining a seal adapted to adjoin a seal seat of a slider housing being covered with a heat-insulating material. The part of the slider plate limited by the seal is formed by a core plate which incorporates bores extending in the plane of the plate which bores are in fluid connection with one another to form a predetermined meandering cooling channel.

Abstract: A valve has removable internal components including a disc, an orifice plate, and guides for engaging and guiding the disc. The internal components are removably secured to a valve seat plate by tee bolts. The seat plate is drilled, bored, or machined to include a plurality of cavities. Each cavity has a cantilevered projection extending over avoid in the cavity, and a slot is formed in each projection to form a tee slot for receiving the tee bolt. Each tee bolt has a head which is slipped into the void in the cavity so that the head engages the cantilevered projection while a shank of the tee bolt extends outward through the slot. The orifice plate has bolt holes for receiving the tee bolts, and an opening in the orifice plate is aligned with a passageway through the valve. A nut is tightened onto the shank of each tee bolt. After extended service, the tee bolts are still easily removable and replaceable, and the tee bolts can be aligned with bolt holes in a replacement orifice plate.

Abstract: Slide valve to close large fluid conduits, in particular double-disk slide valve, with a slide gate (14) disposed within a valve housing (11) so that it can move transverse to the fluid conduit, and arranged like spectacles with a shut-off plate (15) on one side and a pipe bridge (16) on the other. The shut-off plate (15) can be moved into the fluid conduit when the slide valve is closed, and the pipe bridge (16) when it is opened. The slide gate (14) is supported in the valve housing (11) on roller bearings in such a way that the bearing rollers (21, 22) hold the slide gate (14) radially with respect to its direction of movement (23) on all sides. (FIG.

Abstract: An apparatus for controlled adjustment of a stopper of a distributor channel or metallurgical vessel in a continuous casting plant (for billets or ingots), the stopper being connected to a crosstie or stopper rod disposed above the distributor channel or metallurgical vessel, and the crosstie or stopper rod itself being connected to a support bar which is movable up and down in a vertical guide means. The vertical guide means of the support bar is a roller guide means comprising support rollers or support balls which are clamped without clearance between the support bar and an outer housing.

Abstract: A double disk wedge valve the valve disk of which is movable by an actuating rod and is provided with a pipe bridge which includes two sealing rings connected by way of a compensator, said sealing rings in the open position of the valve being urged by elastic bias against the sealing seats of the valve housing, wherein said compensator comprises an inner pipe section and an outer pipe section extending in coaxial relationship therewith. The outer pipe section is fixedly joined, especially welded, to both sealing rings. Also, it has a circumferentially extending indentation. The inner pipe section is fixedly joined to only one of said two sealing rings while it is axially movable relative to the other one. Within the valve housing a gas pressure can be set which is higher than the pressure in the valve passageway in the open position of the valve.

Abstract: A closing apparatus for the bottom pouring hole of a casting ladle, comprising a mounting plate mounted on the bottom of the ladle with a head plate resting against it, in which head plate a port is formed to pour out the melt, and further comprising a slide plate supported for pivoting movement about two axes and adapted to be pressed resiliently against the head plate. The slide plate is supported for reciprocating movement inside a housing. The housing is supported by a housing carrier structure, especially between the legs of carrier bracket for the housing, for pivoting movement about a first pivot axis, while the carrier bracket for the housing is supported by the mounting plate for pivoting about a second pivot axis. The first and second pivot axes extend parallel to each other and to the sealing face between the head and slide plates.

Abstract: An apparatus for the exact position feedback of a double-acting power piston in a hydraulic power cylinder subjected to extreme environmental conditions, especially high temperatures, comprising a double-acting detecting (measuring), or follower cylinder, having a volume corresponding to that of said power cylinder and including a detecting piston the position of which is sensed by an electrical detector, wherein a pair of working spaces of power and detecting cylinders are in fluid communication with each other via a connecting pipe, while the respective other working spaces are adapted to be connected to a (pressursized) fluid pump or a reservoir through a control valve.

Abstract: A charging machine for charging a glass melting tank furnace includes a reciprocatable charging table above which a hopper is provided for the batch, at the rear side of which at least one movable scraper is provided which seals the slot between the rear wall of the batch hopper and the top surface of the loading table. In order to eliminate the wear on the lower edge of the movable scraper and the surface of the charging table which comes into engagement with the movable scraper, the movable scraper is connected to stroke elements for lifting and lowering, whose stroke is controlled in dependency on the movements of the loading table in such a manner that the movable scraper is lifted during the forward movement of the charging table and is lowered during the return movement of the charging table. In this charging machine, wear occurs only during the table return movement, but not during the table forward movement, so that the wear is cut in half, thus doubling the service life of the machine.

Abstract: The invention relates to an apparatus for the exact position feedback of a double-acting power piston in a hydraulic power cylinder subjected to extreme environmental conditions, especially high temperatures, comprising a likewise double-acting detecting (measuring) or follower cylinder having a volume equivalent to that of said power cylinder and including a detecting piston the position of which can be sensed by electric means, wherein a pair of working spaces of power and detecting cylinders are in fluid communication with each other via a connecting pipe, while the respective other working spaces are adapted to be connected to a (pressurized) fluid pump or a reservoir through a control valve.

Abstract: A pneumatic dredger bulk conveyor of the type wherein a conveyor line is formed by a first circular outer tube and a first inner tube telescopically slidable therein and a pressure line is formed by a second outer tube fixed to the first outer tube and a second inner tube telescopically slidable in the second outer tube in coordinated movement with the first inner tube, the improvement which comprises an upper circular guide member formed at the upper end of the first inner tube and closely spaced from the first outer tube defining a first circular interspace therewith, the first inner tube having below the upper guide member a polygonal profile forming a second interspace with the first outer tube having a greater cross sectional area than the first interspace and constituted by a plurality of first segmented passages of greater width than the first interspace and each of which is bounded by an arc of the first outer tube and a plane of the polygonal profile.

Abstract: Disclosed is a method of controlling the nozzle damper (slide valve) of a vessel for the metallurgical casting, in response of the variation of the molten metal level of the volume of molten metal tapped from said vessel the nozzle opening is stepwise controlled in response to, the value of the vertical level of the molten metal above said nozzle damper at the respective tapping time or after the respective tapping period with the molten metal volume calculated from the time integral of the respective previous actual damper opening areas.

Abstract: A closure plate for hot blast slide valves of the type having a hollow ring of box-like cross section cooled by running water to whose inner circumference a body is attached by welding, which is formed by parallel plates and is likewise cooled by running water. The thickness of the body in axial direction is smaller than the axial length of the hollow ring, and the outer surfaces are coated to about the height of the front faces of the ring with refractory concrete, the coating being tied to these outer surfaces by anchoring means.

Abstract: A compressed air dredge for removing gravel, sand, mud or the like from the sea floor is provided of the type including a compressor which is installed on a dredging ship having a vertically-disposed feed pipe and which, via a compressed air line, blows compressed air into the bottom end of the feed pipe so as to provide the required suction force. The dredge is characterized by the provision of at least two vertically disposed feed pipes, each of which is coupled to a separate compressor and each of which is provided with a separate compressed air line. The compressed air lines are coupled together via a coupling line having shut-off means for establishing and closing-off communication between the two compressed air lines.

Abstract: The present invention relates to a high-temperature slide valve, especially hot-blast slide valve, comprising a water-cooled valve casing at least partially lined with refractory material and provided with a pair of end flanges, said casing including coolant passages or channels and, preferably water-cooled, sealing strips or bars as well as a chamber positioned transversely of the longitudinal axis of the flow cross-section of the gas conduit, which chamber has guided therein a slide valve plate for closing and opening said flow cross-section, with an actuating device being removably attached to the one end of said chamber, with the present improvement comprising that the entire center portion of said valve casing enclosing said chamber for said valve plate is formed at all sides thereof with a rectangular configuration and provided with an end wall at the end face opposite the attachment side for said actuating device.

Abstract: A mixing chamber for mixing hot blast exiting from a hot blast stove with cold blast from a supply thereof to provide a uniform blast mixture adapted to be introduced into a blast furnace. The chamber comprises an open ended tubular member defining openings at opposite ends thereof, one of these openings being an entry into the tubular member and the other being an exit therefrom. The entry is adapted to have introduced therethrough hot blast exiting from a hot blast stove while the exit is adapted to communicate with the blast furnace. The tubular member is provided with a pair of diametrically opposed passageways therethrough, each of which is oriented tangentially with respect to the inner surface of the tubular member.

Abstract: Summarizing, the present invention provides a hot blast or hot gas valve, particularly for a blast furnace, comprising a liquid or water cooled valve disc adapted to be moved axially for adjustment, wherein said valve disc is formed to be arched unilaterally towards the side of said valve to be shut off, said valve disc including around the sealing edge thereof a hollow section through which coolant flows, and the concave side of said valve disc opposite from the closure side of said valve being covered by a layer or lining of a refractory material, particularly by a ceramic brickwork, within the area enclosed, for instance, by said water cooled hollow section.

Abstract: The present invention relates to a water-cooled high-temperature slide valve, especially hot blast slide valve, including within the housing thereof annular passages for the coolant (water) and extending from the upper portion of the slide valve along the sealing bars on both peripheral sides to the lower portion of the housing and opening into at least one cooling passage through transfer ports provided in this position, which cooling passage extends back around the portion of said housing arranged about the slide valve plate to the upper portion of said housing in which the coolant outlet is situated, wherein the cross-sectional flow area of said cooling passage within which the coolant is returned, at least in its lower portion extending over an arc of 180.degree., is smaller than, and at most as great as, the overall cross-sectional flow area of said annular passages.