Wolfratshausen, Germany
Wolfratshausen, Germany

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Provided are a set screw, a fixing structure, a fixing method and a sealing structure that can reduce an exposed amount of a set screw and prevent the set screw from coming off a female thread. A fixing structure for fixing a first member 20 in which a female thread 21 is formed and a second member 30 which is provided to be slidable with respect to the first member 20, and in which a through-hole 31 is formed that has a diameter smaller than an inner diameter of the female thread 21, is characterized in that the second member 30 is positioned with respect to the first member 20 in a state in which center axes of the female thread 21 and the through-hole 31 coincide with each other, the male thread of the set screw 10 is engaged in the female thread 21, and the small diameter portion 13 is inserted into the through-hole 31, whereby the first member 20 and the second member 30 are fixed to each other.


Patent
EagleBurgmann | Date: 2015-10-15

The present invention relates to a drill wash device (100), the drill wash device comprising a stationary washpipe (102), a rotating washpipe (103), a pre-mounted, replaceable exchange insert (1) for connecting the stationary washpipe (102) to the rotating washpipe (103), the exchange insert (1) comprising a mechanical seal assembly with a stationary seal ring (20) and a rotating seal ring (21), and a first adapter (108) which is arranged between the stationary washpipe (102) and the exchange insert (1), wherein the first adapter (108) comprises a first adjusting mechanism (116) operative in axial direction for changing an axial length of the first adapter (108), and wherein the exchange insert (1) comprises a second adjusting mechanism (6) operative in axial direction for changing an axial length of the exchange insert (1).


Patent
Eagle Industry Co. and EagleBurgmann | Date: 2017-05-17

Provided is a mechanical seal which improves sealing performance without providing a sealing member between a floating ring and a stationary ring. A mechanical seal (100) includes: a rotating ring (110); a stationary ring (120); a floating ring having an annular sliding portion (131) which protrudes with respect to the rotating ring (110) in the axial direction and in which a sliding surface (131a) as a distal end surface thereof in a protruding direction slides on the rotating ring (120), and a pressed portion (132) which protrudes with respect to the stationary ring (120) in the axial direction and in which a pressed surface (132a) as a distal end surface thereof in a protruding direction makes contact with the stationary ring (120), the floating ring sealing a sealed fluid via the sliding surface (131a) of the sliding portion (131) and the pressed surface (132a) of the pressed portion (132), wherein in the floating ring (130), a size of an area of an end surface in the axial direction on a fluid side L which is a surface that receives fluid pressure of the sealed fluid in a direction toward a side of the rotating ring (110), and a size of an area of an end surface in the axial direction on the fluid side L which is a surface that receives the fluid pressure in a direction toward a side of the stationary ring (120) differ from each other.


Patent
EagleBurgmann | Date: 2017-01-25

The invention relates to a slide ring of a mechanical seal arrangement, produced from a graphene-containing material (6).


Patent
Eagle Industry Co. and EagleBurgmann | Date: 2017-05-31

The present invention improves sealing performance between a floating ring (130) and a rotating ring (110). A mechanical seal (100) that seals an annular gap between a rotating shaft (200) and a housing (300) includes: a rotating ring (110) which rotates with the rotating shaft (200); a stationary ring (120) which is fixed to the housing (300); and a floating ring (130) which is provided between the rotating ring (110) and the stationary ring (120) in an axial direction of the rotating shaft (200) and which has a sliding portion (131) that slides on the rotating ring (110), wherein the mechanical seal (100) seals a sealed fluid via the sliding portion (131) of the floating ring (130) that slides on a sliding portion (111) of the rotating ring (110), and the sliding portion (131) has a plurality of carbon fibers and silicon carbide provided between the plurality of carbon fibers.


Patent
EagleBurgmann | Date: 2017-02-22

The invention relates to a slip-ring seal arrangement comprising a rotating slip ring (11) and a stationary slip ring (12) which between them define a sealing gap (13), and a bellows unit (2) with a bellows element (3) and with an intermediate disc (4), wherein the bellows element (3) has a first attachment area (31), a second attachment area (32) and a bellows intermediate area (33), wherein the bellows element (3) is made from an elastomer material and provides a connection between the rotating slip ring (11) and a rotating component (10), wherein the intermediate disc (4) is arranged between the bellows element (3) and the rotating slip ring (11), and wherein an inner circumferential area (40) of the intermediate disc (4) is designed to bear on the rotating component (10).


Patent
EagleBurgmann | Date: 2017-01-04

The invention relates to a sliding ring seal arrangement comprising a rotating sliding ring (2) and a stationary sliding ring (3), between which a sealing gap (4) is defined, and a conveying device (5) for conveying a fluid, said conveying device (5) having a sleeve-shaped main part (6) with first through-openings (7) and second through-openings (8), wherein the conveying device (5) rotates together with the rotating sliding ring (2). Each of the first through-openings (7) has a first inlet region (70) on an outer circumference of the sleeve-shaped main part (6) and a first outlet region (71) on an inner circumference of the sleeve-shaped main part (6), and each of the second through-openings (8) has a second inlet region (80) on the inner circumference of the sleeve shaped main part (6) and a second outlet region (81) on the outer circumference of the sleeve-shaped main part (6).


Patent
EagleBurgmann | Date: 2016-02-17

Provided is a mechanical seal that has an improved accuracy of positioning a plurality of divided bodies that compose a seal ring. A mechanical seal (100) for sealing an annular gap between a rotary shaft (500) and a housing (600), comprising: a divided-type seal ring that is an annular seal ring composed by combining a plurality of divided bodies; is characterized by comprising metallic bands (231, 331) that fix the plurality of divided bodies by clamping outer peripheral surfaces of the plurality of divided bodies.


Patent
EagleBurgmann | Date: 2016-12-21

A first annular member 210 mounted to a housing 600 and a second annular member 310 mounted to an outer periphery of a rotating shaft 500 are configured to be capable of being fixed to each other by a coupling member 400 such that each of a stationary ring 220 and a rotating ring 320 which is configured annularly by combining a plurality of divided bodies is held between the first annular member 210 and the second annular member 310 in an axial direction in a state in which a sliding sealing surface is formed, and a state in which positioning of the first annular member 210, the stationary ring 220, the rotating ring 320, and the second annular member 310 in the axial direction and positioning of the first annular member 210 and the second annular member 310 in a circumferential direction are completed is maintained.


Patent
EagleBurgmann | Date: 2016-05-04

Provided is a sealing device which includes a pumping ring capable of increasing the flow amount of the fluid to be self-circulated, and thereby increasing the head. The pumping ring (160) includes: a through hole (161) that is provided so as to pass through the pumping ring (160) from an inner peripheral surface to an outer peripheral surface and serves as a passage of the fluid; and an inlet groove (162) that is provided on the inner peripheral surface so as to run from a side face on a side where the mechanical seal (M) is disposed to the through hole (161), and leads the fluid into the through hole (161), and on an outer peripheral surface of the sleeve (110), an auxiliary inlet groove (111) that leads the fluid into the through hole (161) is provided at a position opposing the inlet groove (162) and the through hole (161).

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