Waeschle Maschinenfabrik Gmbh

Waeschle Maschinenfabrick Gmbh

Paul Vogel

Dieter Heep

Joachim Schmalz

Manfred Frey

Wolfgang Siegel

Reinhold Eck

Joachim Stengel

Anton Mutscheller

Gerhard Reichert

Wolfgang Horn

An apparatus for feeding bulk material includes a rotor with a plurality of radially extending vanes which are supported on a hollow shaft and are provided with sealing strips at their end faces. Shiftable within the shaft is an adjusting bar with at least two axially spaced conical surfaces which cooperate with push rods having one end bearing against the conical surfaces and another end in force-locking connection with the sealing strips. The adjusting bar is acted upon by a force-applying unit which subjects the adjusting bar to a constant axial holding force which is independent of the axial displacement of the adjusting bar so that a sufficient contact pressure is continuously maintained by which the sealing strips are urged against the housing.

Apparatus for feeding bulk material

A pipe switch for plants for pneumatically conveying of bulk material includes a housing with three ports and having a rotatable cock for selectively connecting one port with the second or third port. The cock is provided with two pipe sections which define two flow paths and are connected at their ends via suitable ring segments. One of the ring segments is of sufficient dimension to sealingly bar the one port which is not in communication with the first port when the cock is in the respective end position. A journal connects the pipe sections at a central location thereof and is rotatably supported in side cover plates of the housing for allowing a rotation of the cock between the two end positions.

Pipe switch for plants for pneumatically conveying bulk material

A rotary feeder includes a housing in which a rotary member is supported between two lateral bearing caps, with one journal fixedly supported in one bearing cap and the other journal loosely supported in the other bearing cap. For facilitating maintenance and cleaning of the rotary feeder, a carriage is securely mounted to the one bearing cap accommodating the fixed bearing. The carriage is movable and suitably guided in axial direction of the rotary member by at least the axial length of the rotary member so as to allow removal and return of the rotary member from and back into the housing in an accurate and safe manner.

Rotary feeder

A rotary feeder includes a housing which accommodates a rotor extending between two lateral disk members. Bearing against the peripheral area of each disk member is a slide ring which is acted upon by a pressure fluid with a constant holding force by which the slide ring is pressed against the associated disk member. Thus, the axial sealing of the rotor within the housing is independent of the wear of the slide ring. In addition to the holding pressure, the slide rings may also be subjected to a momentary displacement force which exceeds the holding force and ensures that the slide rings overcome frictional forces in the area of their guides.

A rotary feeder includes a housing which accommodates a rotor including a plurality of vanes supported on a shaft. The rotary feeder is sealed in axial direction by slide rings which are acted upon by a pressure fluid and in radial direction by displaceable sealing strips which are contained in the peripheral end face of the vanes. The required contact pressure in axial direction as well as in radial direction is provided by a pressure fluid source which acts upon the annular piston-type slide rings. Each slide ring is pressed against a slide disk which is part of a lateral disk member of the rotor and is rotatable in circumferential direction to the slide disk. Each slide disk is provided in circumferential direction with slant grooves which are engaged by retaining bolts of a sealing strip unit contained in the peripheral end face of each vane and providing the radial sealing of the rotor vanes. The frictional force between the slide ring and the slide disk causes a rotation of the slide disk in opposition to the rotation of the rotor to thereby press the sealing strip unit in radial direction for generating a sufficient contact pressure for the radial sealing action.

A two-way pipe switch for bulk material includes a housing with an inlet port, a coaxial first outlet port connectable to the inlet port to define a first flow path and a second outlet port connectable to the inlet port to define a second flow path which rectangularly branches off the first flow path. Accommodated in the housing is a cock which is rotatable by about 120.degree. from a first position into a second position for selectively connecting the inlet port with the first and second outlet ports. The housing has a cylindrical inner wall which between the inlet port and the first outlet port defines a first area and between the inlet port and the second outlet port defines a second area, with each area being provided with a pocket-like recess facing the respective outlet port and including edges which cooperate with the respective end face of the cross piece in such a manner that bulk material particles are prevented from penetrating the respective sealing gaps. A third area of the inner housing wall extending between the first and second outlet ports is provided with bores through which compressed air is introduced for preventing penetration of bulk material particles also in this area.

Two-way pipe switch

A cylindrical housing having diametrically opposed inlet and discharge openings contains a bucket wheel coaxially rotatable therein. The inlet opening is provided with an insert having an inclined upper surface and an edge for prestripping the grain material. The insert is further provided with a stripping edge forming an angle with the cylindrical generatrix formed by the surface edge of the blades of the rotating bucket wheel which angle is at least equal to the angle of friction between the bulk material and the material out of which the gate is formed. In addition, a canopy displacing wall is arranged in the inlet opening at the level of the end of the stripping edge to displace the material moving through the feed inlet. The wall has a width of such a dimension that the cavity formed beneath it is equal to at least the volume of the granulate material stripped from the stripping edge.

Bucket wheel gate for dispensing granulated bulk material

An apparatus for feeding bulk material includes a housing which accommodates a rotor arranged between an inlet port and an outlet port of the housing and having a plurality of radially extending vanes. The vanes are fixed on a shaft and provided with sealing strips for sealing the vanes against the housing. For compensating occurring wear and maintaining the sealing action, the sealing strips are corrected by an adjusting bar with two spaced conical sufaces which cooperate with push rods having one end lying against the conical surfaces and another end in force-locking connection with the sealing strips.

Growing community of inventors

Weingarten, Germany

Paul Vogel