Abstract:
The invention relates to a rotary piston pump (10) for conveying fluids, in particular liquids laden with solid matter, having a housing (45) and having at least one pair of intermeshing rotary pistons (1) arranged within the housing (45), wherein a rotary piston (1) has in each case at least one recess (13, 43) formed on the circumferential surface (5) thereof and/or at least one recess (41) formed on an end surface (7, 9). The invention relates in particular to a rotary piston pump in which at least one driver (15, 17, 39, 51) is arranged in the at least one recess (13, 41, 43) and is designed for collecting solid matter. The invention also relates to a rotary piston for a rotary piston pump (10) for conveying fluids, in particular liquids laden with solid matter, having at least one recess (13, 43) formed on the circumferential surface (5) thereof and/or at least one recess (41) formed on an end surface (7, 9).
Abstract:
The invention relates to a rotary piston pump (100) for conveying a fluid medium which contains solid matter, comprising an inlet opening (111) and an outlet opening (112) for the medium to be conveyed, having two rotary pistons (121, 122) which are arranged in a pump housing (140) and which have rotary piston vanes which engage into one another, wherein each of the two rotary pistons is fastened in a torsionally rigid manner to in each case one shaft (131) and can be driven by the respective shaft, and wherein the two shafts are coupled to one another by means of a gearing arranged in a gearing housing (152). The invention relates in particular to a rotary piston pump in which the inlet opening and the outlet opening are arranged on a connecting housing (151).
Abstract:
The invention relates to a comminution device, particularly comprising an adjusting mechanism which has a hydraulic cylinder (165, 167) that is coupled between the first and the second cutting element and is in hydraulic connection to a hydraulic, pneumatically closed volume (220, 230). A first part (220a) of said volume is filled with a hydraulic fluid, a second part (220b) thereof is filled with air and the walls thereof are at least partially transparent in order to be able to read out the hydraulic fluid level along a scale (222) which displays a wear state of the first and second cutting element. The invention further relates to a comminution device in which a lubricant-filled cavity (380) is formed between a first surface (32; 453) and a second surface (342; 463), the volume of said cavity being reduced by an adjustment movement of the second cutting element and said cavity being in fluidic connection with the form-fitting connection for supplying lubricant to said form-fitting connection.
Abstract:
The invention relates to a rotary piston pump for conveying a fluidic medium containing solids, said pump comprising an inlet and an outlet for the medium to be conveyed, a pump housing and two rotary pistons with meshing rotary piston vanes, said pistons being located in the pump housing. According to the invention, the pump housing has two housing half-shells that lie opposite one another and seal the pump housing in a fluid-tight manner. The housing half-shells are double-walled.
Abstract:
The invention relates to a device for comminuting coarse suspensions or fluids with organic dry matter or solids, for admixing fluids and for conveying the resulting suspensions into a processing plant. It is equipped with a lifting screw, a solids separator and a comminuting element. The solids separator (13) is designed as a sealed container, and all elements connected to it are sealed towards the outside, the elements being the lifting screw (10), a solids lock (14), the feed pump (23) for admixing fluid, and the comminuting element (16).
Abstract:
The invention relates to a pump (1) comprising one or several rotating pistons (3; 103; 203; 303; 403), in particular for the delivery of substantially liquid media. At least sections of said piston(s) (3; 103; 203; 303; 403) have a surface layer (17; 117; 217; 317; 417) consisting of a polymer, in particular an elastomer. The invention is characterized in that the polymer layer has at least one cavity (19; 119; 219; 319; 419), into which a support body (20; 120; 220; 320; 420) can be introduced, said body being designed to extend the polymer layer (17; 117; 217; 317; 417).
Abstract:
The invention relates to a rotary piston pump, comprising a pump housing having a pump chamber, an inlet opening, an outlet opening, a first, multi-vane rotary piston, which is arranged in the pump chamber and is rotatably supported about a first axis, a second, multi-vane rotary piston arranged in the pump chamber, which is rotatably supported about a second axis that is spaced from the first axis and which meshes with the first rotary piston, wherein the first and second rotary pistons produce a fluid flow from the inlet opening to the outlet opening by rotating about the first and second axes, respectively, and a drive device, which is mechanically coupled to the rotary pistons in order to drive the rotary pistons. According to the invention, the drive device comprises a first electric drive motor, which is mechanically coupled to the first rotary piston in order to drive the first rotary piston, and a second electric drive motor, which is mechanically coupled to the second rotary piston in order to drive the second rotary piston.
Abstract:
The invention relates to an apparatus for sealing off, in particular in the region of a shaft feedthrough, a pump space of a rotary piston pump with respect to a fluid-free region of the rotary piston pump, wherein the apparatus has two or more sealing members, which are arrangeable in such a way next to an end side of a rotary piston, arranged on the shaft, in the pump space of the rotary piston pump, that a labyrinth gap extends between the sealing members, said labyrinth gap being configured to extend the seal path in relation to the shaft in the radial direction and in the axial direction. According to the invention, the seal path in the radial direction in relation to the shaft is longer than the seal path in the axial direction in relation to the shaft.
Abstract:
The invention relates to a screw conveyor for introducing organic materials into a biogas fermenter that is under internal gas pressure. The invention further relates to a biogas plant having such a screw conveyor and to a method for feeding organic materials to such a biogas plant. According to the invention, the plug section has an expansion region, in which the passage cross-section between the conveying screw and the screw pipe is expanded in the conveying direction, and a contraction region lying after the expansion region in the conveying direction, in which contraction region the passage cross-section between the conveying screw and the screw pipe is reduced in the conveying direction.
Abstract:
The invention relates to a rotary piston pump for delivering a fluid medium comprising a solid, having two rotary pistons with rotary piston vanes engaging with each other, each having a rotary axis and an outer circumference, wherein the rotary axes of the two rotary pistons are disposed at a distance from each other and parallel to each other, and the outer circumferences of the two rotary pistons partially overlap each other, and a housing having an inlet opening and an outlet opening and an inner and an outer wall, wherein the inner wall of the housing encloses one segment each of the outer circumferences of the rotary pistons, and wherein the rotary piston pump is designed for delivering the medium in a delivery direction from the inlet to the outlet opening. According to the invention, the rotary piston pump is characterized in that the outlet opening at the inner wall of the housing comprises a maximum discharge opening greater than the distance between the rotary axes in a direction parallel to the plane of the rotary axes and perpendicular to the rotary axes.