Khd Humboldt Wedag Gmbh

Khd Humboldt Wedag Ag

Khd Humboldy Wedag Gmbh

Khd Humboldft Wedag Gmbh

Christian Splinter

Meinhard Frangenberg

Alexander Hagedorn

Karl Schinke

Frank Fischer-Helwig

Dieter Brendler

Matthias Mersmann

Erich Sommer

Jörg Schnepper

In order to create a roller press, particularly for comminuting a bed of material, the roller press having two rollers separated from each other by a roller nip and using hydraulic cylinders to press the one roller against the oppositely situated roller over the material situated in the roller nip, the stress on the surface of the rollers to be reduced and their service life to be increased, it is proposed according to the invention that both rollers are designed as loose rollers that are displaceable transversely relative to the roller nip, the bearing housings of the rollers being supported on side parts of the machine frame by hydraulic cylinders that apply the roller compaction pressure.

Roller press, particularly for interparticle comminution

A roll press for the compression or compacting of granular products. Two detachable rolls separated by a roll gap are driven in opposite directions and mounted on shafts to rotate in a machine frame. The shafts of the mobile rolls are received in bearing housings arranged in a mobile manner in the machine frame. Two respective bearing housings of different rolls, arranged on one side of the rolls, are interconnected by at least one pressure cylinder having at least two working chambers. A method for centering mobile rolls in such a roll press. The at least two working chambers have a force effect acting in opposite directions, and are interconnected in such a way that a pressure medium can circulate between the chambers. In this way, the hydraulic system is positioned in a fixed manner on the machine frame, the rolls nonetheless being mounted in the machine frame in a floating manner.

Roll press comprising two mobile rolls

A tandem roller press has two roll pairs which are arranged next to one another in an axially parallel manner in order to provide a roller press system, in particular for the material bed comminution of granular material, which can considerably exceed previous limits with regard to throughput performance but also with regard to the specific energy requirement. Preferably, common feeding of the granular material and common discharge of the material which has been subjected to the material bed comminution are arranged. A tandem separator device may be arranged below the two roll pairs in order to form two parallel compact milling circuits with a high throughput performance overall.

Roller press, in particular for interparticle comminution

In order to provide, for a grate cooler for cooling hot bulk material, such as, for example, cement clinker, an, in particular, automatically operating cooling air regulator which has a simple construction and can be used without difficulty both for unmoved and, in particular, for moved cooling grate regions or moved cooling grate systems, for example, cylindrical hose sleeve comprised of elastic material be tension-mounted as an actuating member coaxially in the regulator housing which is arranged below the cooling grate, participates in the movements of the latter and has a casing comprised of solid material, the pressure difference inside and outside the hose sleeve and the deformation resistance of the sleeve being set such that the hose sleeve is deformable, in particular, automatically from its maximum flow cross section into its minimum flow cross section and at the same time regulates the volume flow of the cooling air flow from below into the cooling grate.

Regulator for the cooling air inflow of a cooling grate

The aim of the invention is to simplify and to improve mounting of roller bearings in double roller machines, for example, roller presses for interparticle comminution of granular goods. The rollers and the bearing housing thereof are formed by means of slanting rollers and/or thermal roller longitudinal changes. The rollers are guided in a secure manner on the slide guides thereof. The invention is characterized in that the fixed bearing housing and the moveable bearing housing are connected together via a guide rod in each roller.

Roller bearing in a roller press

The aim of the invention is to design a bulk-material cooler, particularly one for cooling cement clinker, which operates according to the walking floor principle, so that its cooling grate can be composed of a multitude of ventilated cooling grate modules, which can be assembled in an easy and variable manner, in order to obtain large lengths and widths of the cooler. When these cooling grate modules move between an advancing and returning position, even lateral and/or height offset of the guiding elements can be compensated for in a kinematic manner. To this end, the invention provides that the cooling grate, when viewed over the length and width of the cooler, is composed of a multitude of modules () ventilated with cooling air. The coupling of the cooling grate modules of each longitudinal row of cooling grate modules is effected by an articulated joint.

Bulk-material cooler for cooling hot material to be cooled

In the design of a twin-roller machine, such as a roll press for comminuting a bed of granular material, with two rotatably mounted, counter rotationally driven rollers which are separated from each other by a roller nip, and which use hydraulic cylinders to provide a roller pressing force the hydraulic cylinders are arranged in such a manner that they act in each case both on the bearing housings of one roller and on the respectively opposite bearing housings of the other roller with a self-contained system of milling pressing forces being formed without a closed machine frame loaded by the roller pressing forces.

Twin-roll machine, in particular for material, bed milling

A two-roll machine, in particular a roll press, for interparticle comminution of granular material with two rotatably mounted, counter-rotating driven rolls separated from one another by a roll gap. Drive journals of the roll's shaft-mounted gearboxes are shaft-mounted as step-down planetary gear units. A machine table with a table platen is arranged under each of the shaft-mounted gearboxes that can move back and forth parallel to the roll shaft in at least one direction, and three vertically and horizontally adjustable supporting rests arranged in a triangle are arranged on the table platen on which the respective shaft-mounted gearbox can be supported offset-free and aligned with the roll shaft drive journal during its installation and removal.

Double-roll machine for comminuting a bed of material

The aim of the invention is to provide grinding rolls in particular for high-pressure roller mills or rolling presses for pressure grinding a granular material not only with a wear-resistant coating but also with a face armour plating in the area of the roller annular edge, which has a long service life due to the high wear resistance thereof and whose production and repair are, in general, relatively simple and inexpensive. For this purpose, the inventive face armour plating consists of a plurality of prefabricated hard bodies which are circularly arranged side by side in such a way that the circular face edge of the roller is formed, said hard bodies are disposed on said circular shoulder of a roll shell such that said hard bodies are placed axially and radially against said circular shoulder of the roll shell and are movably assembled with the roll shell.

Grinding roller for the pressure comminution of granular material

The aim of the invention is to create a compact circulating grinding plant comprising a product bed comminution roller mill or roller press and a sifter device, in which the problem of mechanically transporting the grinding product that is directed through the circuit is minimized. Said aim is achieved by a circulating grinding plant in which a static cascade sifter is disposed below the gap of the roller press while a subsequent sifter, particularly a dynamic rod basket sifter, is disposed above said roller press. The sifting product discharge area of the static cascade sifter is connected to the sifting air and sifting product inlet of the subsequent sifter via an ascending duct which pneumatically conveys the product.

Circulating grinding plant comprising a mill and a sifter

In order to further develop a circuit grinding apparatus with a roller mill or roller press for material bed disintegration of granular material and with at least one integrated sifter, where the mill and the sifter are disposed within two stationary side walls between which a material conveyor ring is rotatably seated and can be set into rotation for an internal circulation of material in such a way that the rotatably seated material conveyor ring, which has a very large diameter and rotates in operation, is as light as possible and the rotary actuator is configured as simply as possible, it is proposed in accordance with the invention to dispose around the bottom circumferential area of the material conveyor ring more than two, for example four rolls supporting the ring on the bottom, where two adjacent bearing rolls in circumferential direction of the ring are positioned at the ends of at least one common rocker lever which, in turn, is supported on the machine frame via a tilting joint.

Circuit grinding apparatus with high-pressure roller mill and sifter

In order to further develop a circuit grinding apparatus with roller mill or roller press for comminution of the material bed of granular material and with at least one integrated sifter, in which mill and sifters are arranged within two fixed side face walls with an interlying turnably borne material conveyor ring settable into rotation for an internal material circuit, so that seals between the fixed side face walls and the interlying material conveyor ring that is settable in rotation are no longer necessary, it is proposed according to the invention to combine the two fixed side face walls over a housing part that houses the rotatable material conveyor ring, especially a ring housing part, into a housing tightly enclosing the entire working space of the circuit grinding apparatus, and to arrange on the underside of the housing part at least one grinding material leakage discharge from the working space of the circuit grinding apparatus.

Growing community of inventors

Pulheim, Germany

Christian Splinter