Abstract: The invention relates to a mechanical seal arrangement comprising a first slide ring seal (2) having a rotating slide ring (21) and a stationary slide ring (22) defining a sealing gap (23) therebetween, a shaft sleeve (4), a driver (5) which connects the shaft sleeve (4) to the rotating slide ring (21) and which is arranged to transmit rotation of the shaft sleeve (4) to the rotating slide ring (21) a connecting arrangement (6) for connecting the shaft sleeve (4) to the driver (5), the connecting arrangement (6) comprising at least two rotary locks (60) and at least two recesses (40) in the shaft sleeve (4), wherein each of the rotary locks (60) has a bearing portion (61) and a locking portion (62), wherein the locking portion (62) laterally projects beyond the bearing portion (61), and wherein a rotational axis (Y-Y) of each rotary lock (60) is parallel to a central axis (X-X) of the shaft sleeve (4).

Abstract: The invention relates to a liquid-lubricated mechanical seal assembly comprising a mechanical seal (2) having a rotating slide ring (3) and a stationary slide ring (4), wherein a sealing gap (5) is defined between a sliding surface of the rotating slide ring (3) and a sliding surface of the stationary slide ring (4), and an ultrasound arrangement (6) having an ultrasound generator (60) and at least one ultrasound head (61), wherein the ultrasound arrangement (6) is configured to direct ultrasonic waves (62) for cleaning onto components of the mechanical seal assembly (1), in order to remove dirt (7) which adheres to the components of the mechanical seal assembly.

Abstract: The invention relates to a mechanical seal arrangement comprising a mechanical seal (2) having a rotating seal ring (21) and a stationary seal ring (22) defining a seal gap (23) therebetween, a secondary seal (3) arranged on a back surface of one of the seal rings facing away from a sealing surface of the seal ring, the secondary seal (3) being made of a base material and having a coating (7) such that a material bond is formed between the coating (7) and the base material of the secondary seal, the secondary seal (3) being made of a base material and having a coating (7) such that a substance-to-substance connection is formed between the coating (7) and the base material of the secondary seal, a sleeve-shaped member (4) arranged radially inside the secondary seal (3), wherein a gap (5) having a gap height (H) is present between the sleeve-shaped component (4) and a region of one of the sliding rings facing radially inwards, the secondary seal (3) seals against the back side of this slide ring and the sleeve-

Abstract: The invention relates to a method of monitoring a mechanical seal arrangement (1) comprising the steps of: acquiring operational data of an individual mechanical seal arrangement (1) on a test bench (11), the acquired operational data being defined as the nominal data (17), incorporating the individual mechanical seal arrangement (1) into a sealing system (12), acquiring operational data from the individual mechanical seal arrangement (1) in the condition incorporated into the sealing system (12), the acquired operational data being defined as the actual data (18), and comparing the nominal data (17) with the actual data (18).

Abstract: The invention relates to a mechanical seal arrangement comprising a mechanical seal (2) having a rotating sliding ring (3) and a stationary sliding ring (4) defining a sealing gap (5) between the sealing surfaces (30, 40) thereof, a slide ring carrier (6) for holding the stationary sliding ring (4), an axially movable thrust ring (7) arranged on a rear side (43) of the stationary sliding ring (4) between the slide ring carrier (6) and the stationary sliding ring, a pretensioning device (8) arranged between the thrust ring (7) and the slide ring carrier (6) to pretension the stationary sliding ring (4) in the axial direction X-X of the mechanical seal arrangement, and an anti-rotation device (10) to keep the stationary sliding ring (4) rotationally fixed and axially movable, the anti-rotation device (10) having a first transmission device (11) for transmitting force between the sliding ring carrier (6) and the thrust ring (7) and a second transmission device (12) for transmitting force between the thrust ring

Abstract: The invention relates to a mechanical seal arrangement comprising a first mechanical seal (2) having a first rotating sliding ring (22) and a first stationary sliding ring (21) defining a first sealing gap (20) therebetween, a second mechanical seal (3) having a second rotating sliding ring (22) and a second stationary sliding ring (32) defining a second sealing gap (30) therebetween, a housing (4) having an inlet (40) and an outlet (41) for a cooling liquid, a rotating conveying sleeve (5) joined to the first rotating sliding ring (22) and the second rotating sliding ring (32), the conveying sleeve (5) having a plurality of conveying grooves (50) on its outer circumference wherein the first stationary sliding ring (21) is arranged radially outside the conveying sleeve (5) and has an inner circumference (21a) which is arranged eccentrically with respect to an outer circumference (50a) of the conveying sleeve (5) so that a circumferential eccentric gap (6) is formed between the outer circumference (50a) of the

Abstract: The invention relates to a mechanical seal assembly comprising a mechanical seal (2) with a rotating slide ring (3) and a stationary slide ring (4) defining a seal gap (5) therebetween, a pretensioning device (6) which biases the stationary slide ring (4) in the axial direction (X-X) of the slide ring seal arrangement, a support ring (7) which is arranged on the stationary slide ring (4), the support ring (7) being axially movable relative to the stationary slide ring (4) the pretensioning device (6) being arranged between the support ring (7) and the stationary slide ring, a fixing device (8) which is arranged for axially movable fixing the support ring (7) to a stationary component, a stop (9) which limits a distance (W1) by which the axially movable support ring (7) can be moved, and a secondary seal (10) which is arranged to seal between the support ring (7) and the stationary component.

Abstract: The invention relates to a method of operating a mechanical seal assembly (1) having a mechanical seal (2) with a rotating sliding ring (3) and a stationary sliding ring (4), defining a sealing gap (5) between the sliding surfaces thereof, comprising the steps of: collecting operating data and/or environmental data of the mechanical seal (2), transmitting the collected operating data and/or environmental data to a digital twin (31) of the mechanical seal (2), simulating and monitoring the operation of the mechanical seal (2) using the digital twin (31) based on the transmitted operating data and/or environmental data of the mechanical seal (2), and retransmitting a simulation result and/or data of the digital twin.

Abstract: The invention relates to a mechanical seal comprising a rotating slide ring (2) and a stationary slide ring (3) defining a sealing gap (4) therebetween, one of the slide rings (2) having at least a first row (11) of a plurality of first grooves (5) with a foot region (50) on a first radius (R1) and a head region (51) on a second radius (R2) wherein a second circumferential sliding region (33) is provided between the head regions of the radially outermost row of grooves of the slide ring (3) and an outer radial edge (31) of the slide ring (2), the other of the slide rings (3) having at least a second row (12) of a plurality of second grooves (6) with a foot region (60) at a third radius (R3) and a head region (61) at a fourth radius (R4) wherein a second circumferential sliding region (33) is provided between the head regions of the radially outermost row of grooves of the slide ring (3) and an external radial edge (31) of the slide ring (3), wherein the first radius (R1) is smaller than the third radius (R3),

Abstract: The invention relates to a gas-lubricated mechanical seal arrangement (1) comprising a first mechanical seal (2) having a first rotating slide ring (21) and a first slide ring (22) defining a first sealing gap (23) between sealing surfaces (21a, 22a), the first slide ring (22) having a passageway (25) for supplying a barrier fluid to the first sealing gap (23), wherein the passageway (25) extends from a rear surface (22b) to the sliding surface (22a) of the first stationary slide ring (22), and wherein on the first rotating slide ring (21) a first secondary seal (4) for sealing and a centering device (5) for centering of the first rotating slide ring (21) are arranged.

Abstract: The invention relates to a mechanical seal arrangement (1) comprising a mechanical seal (2) having a rotating seal ring (3) with a first sealing surface (3a) and a stationary seal ring (4) with a second sealing surface (4a), a pre-tensioning device (6), to pre-tension one of the two sliding rings in the axial direction (X-X), a secondary sealing member (7) disposed on a rear side (40) of the axially pre-tensioned sliding ring, the pre-tensioning device (6) pre-tensioning the axially pre-tensioned sliding ring via the secondary sealing member (7), and a sleeve (8), which is arranged radially inside the secondary sealing member (7), the secondary sealing member (7) being arranged on the rear side (40) of the axially pre-tensioned sliding ring, the secondary sealing member (7) having a sealing edge (70) which is closed in an annular shape in the circumferential direction which projects from the secondary sealing member (7) in the axial direction (X-X) to the axially pre-tensioned sliding ring, wherein the sealin

Abstract: The invention relates to a mechanical seal assembly comprising a slide ring seal (2) having a rotating slide ring (3) with a first slide surface (30) and a stationary slide ring (4) with a second slide surface (40), a sealing gap (5) being defined between the first and second slide surfaces, the stationary slide ring (4) having a through hole (42) extending from a rear side (41) of the stationary slide ring to an orifice (43) of the second slide surface (40) and a gas supply line (8) extending from a gas source to an inlet (44) of the through hole (42) at the rear side of the stationary slide ring, wherein grooves (6, 7) are formed in at least one of the sliding surfaces (30, 40), the grooves being arranged in radial direction between the orifice (43) of the through hole (42) and a radially outer outlet portion (50) of the sealing gap (5).

Abstract: The invention relates to a mechanical seal arrangement for sealing on a rotating component (21), comprising a slide ring seal (2) having a rotating slide ring (3) and a stationary slide ring (4), which define a sealing gap (5) between the sliding surfaces (3a, 4a) thereof, a recirculation conveyor (7) arranged adjacent to the rotating slide ring (3) wherein the recirculation conveyor (7) comprises a recirculation line (19) in which a cooling device (20) for cooling the recirculated fluid is arranged, a recirculation rotor (8) and a hollow cylindrical housing (9), wherein the recirculation line (19) leads to a cavity (6) in the region of the sealing gap (5) of the sliding ring seal (2), wherein the hollow cylindrical housing (9) comprises an inner shell surface (11) and an outer shell surface (12) and wherein a conveyor channel (10) is provided on the outer shell surface (12), which conveyor channel (10) is formed along the outer shell surface (12) from a start portion (13) to an end portion (14) wherein the s

Abstract: The invention relates to a pump assembly, especially of a mechanical seal assembly, for supplying a fluid, especially to a mechanical seal (2a, 2b), comprising exactly one drive (11) comprising a drive shaft (24), a first axial pump (21), which conveys the fluid in the axial direction (X-X) of the drive shaft, a second axial pump (22), which conveys the fluid in the axial direction of the drive shaft, and a radial pump (23), which conveys the fluid in the radial direction (R) of the drive shaft, wherein the first axial pump (21) and the second axial pump (22) are arranged in front of the radial pump (23) in the flow-through direction (B) of the fluid across the pump assembly, and wherein the drive (11) simultaneously drives the first axial pump (21), the second axial pump (22) and the radial pump (23).

Abstract: The invention relates to a mechanical seal arrangement comprising a mechanical seal (2) having a rotating seal ring (21) and a stationary seal ring (22) defining a seal gap (23) therebetween, a secondary seal (3) arranged on a back surface of one of the seal rings facing away from a sealing surface of the seal ring, the secondary seal (3) being made of a base material and having a coating (7) such that a material bond is formed between the coating (7) and the base material of the secondary seal, the secondary seal (3) being made of a base material and having a coating (7) such that a substance-to-substance connection is formed between the coating (7) and the base material of the secondary seal, a sleeve-shaped member (4) arranged radially inside the secondary seal (3), wherein a gap (5) having a gap height (H) is present between the sleeve-shaped component (4) and a region of one of the sliding rings facing radially inwards, the secondary seal (3) seals against the back side of this slide ring and the sleeve-

Abstract: The invention relates to a mechanical seal arrangement comprising a slide ring seal (2) having a rotating slide ring (3) and a stationary slide ring (4) defining a sealing gap (5) therebetween, the rotating slide ring (3) having a first slide surface (30) with a first information structure (6), the stationary slide ring (4) having a second slide surface (40) with a second information structure (7) wherein the first information structure (6) and the second information structure (7) at least partially overlap in an overlap area (16), at least one sensor (8) for detecting sound and/or vibration, wherein the sound and/or the vibration is generated by the first information structure (6) when moving past the second information structure (7), and an evaluation unit (10), which is arranged to compare the sound and/or the vibrations detected with set values and to output a comparison result, characterized in that the second information structure (7) has a second sliding surface (40) with a second information structure

Abstract: The invention relates to a mechanical seal arrangement comprising a first slide ring seal (2) having a rotating slide ring (21) and a stationary slide ring (22) defining a sealing gap (23) therebetween, a shaft sleeve (4), a driver (5) which connects the shaft sleeve (4) to the rotating slide ring (21) and which is arranged to transmit rotation of the shaft sleeve (4) to the rotating slide ring (21) a connecting arrangement (6) for connecting the shaft sleeve (4) to the driver (5), the connecting arrangement (6) comprising at least two rotary locks (60) and at least two recesses (40) in the shaft sleeve (4), wherein each of the rotary locks (60) has a bearing portion (61) and a locking portion (62), wherein the locking portion (62) laterally projects beyond the bearing portion (61), and wherein a rotational axis (Y-Y) of each rotary lock (60) is parallel to a central axis (X-X) of the shaft sleeve (4).

Abstract: The invention relates to a mechanical seal arrangement comprising a mechanical seal (10) including a rotating slide ring (2) and a stationary slide ring (3), defining a seal gap (4) therebetween, a one-piece, ring-shaped slide ring carrier (5), which holds the stationary slide ring (3), a one-piece, ring-shaped cover (6), which is arranged on the slide ring carrier (5), a one-piece, ring-shaped housing (7), which is detachably fixed to the cover (6) using fixing device (8), and a one-piece first retaining ring (9), which is detachably arranged on the slide ring carrier (5), wherein the stationary slide ring (3) is clamped between the first retaining ring (9) and the cover (6), and wherein the slide ring carrier (5) is connected to the slide ring carrier (5) by means of at least one elastic biasing member (19) such that the slide ring carrier (5) can perform movements in the axial direction of the mechanical seal arrangement together with the stationary slide ring (3).

Abstract: A compensator arrangement comprising a first fixing unit, a second fixing unit, and an intermediate flexible member removably arranged between the first fixing unit and the second fixing unit and comprising a main body, a first radial end flange and a second radial end flange, wherein the first fixing unit comprises a first connecting member having a first connecting body and a first fixing flange having a plurality of through-holes, a first counter ring, a first clamping ring and a first clamping device for releasably clamping the first radial end flange.

Abstract: The invention relates to a mechanical seal arrangement comprising a mechanical seal including a rotating slide ring (2) and a stationary slide ring (3) which define a sealing gap (4) between seal faces (21, 31), a shaft sleeve arrangement (5), comprising a split shaft sleeve with a first annular sleeve part (51) and a second annular sleeve part (52), which are connected to each other by means of a snap-in connection (6), wherein the rotating slide ring (2) is arranged on the shaft sleeve arrangement (5), and wherein the snap-in connection (6) comprises at least one snap-in nose (60) and one snap-in recess (61) receiving the snap-in nose (60) to allow the first sleeve part (51) to engage with the second sleeve part (52).