Abstract

A sealing packing includes a core portion and a housing wrapped around the exterior of the core portion that has a rounded rectangular cross-sectional shape. The housing comprises a plurality of fiber threads woven together with each other and a barrier sealant filled between the plurality of fiber threads. Between the core portion and the housing, a lubricating layer covers the housing. The core portion has a cross-sectional area of 15-75% of the cross-sectional area of the sealing packing. The core portion comprises a central supportive reinforcing core with an X-shaped cross-section and a plurality of elastic supplementing cores. The central supportive reinforcing core has a central portion extending along the central axis of the core portion and four support portions extending outwardly from the central portion. Each support portion points to a respective corresponding corner of the housing. A method for preparing the sealing packing is also provided.

IPC Classes  ?

• F16J 15/44 - Free-space packings

Abstract

A mechanical sealing device for sealing fluid from escaping a housing through which a rotating shaft is arranged includes a rotatable ring fixed to and disposed about the rotating shaft. A stationary ring is disposed about the rotating shaft, and abuts a stationary ring at a contact point. A peripheral rim is provided and surrounds the rotatable ring and the stationary ring. The peripheral rim defines an inclined surface exposed to the fluid and includes a distal end that protrudes radially beyond the rotatable ring and the stationary ring. One of either the rotatable or stationary rings includes an inclined chamfer adjacent the contact point, the inclined chamfer defining a plane that is parallel to the inclined surface.

IPC Classes  ?

• F16J 15/3276 - Mounting of sealing rings with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted
• F16J 15/18 - Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
• F16J 15/3252 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports

Abstract

The present disclosure generally relates to a pre-tightening disc spring, comprising a disc-shaped body which is integrally formed, the disc-shaped body being formed with a central hole, the disc-shaped body having a first contact side and a second contact side which are opposite to each other in a thickness direction of the disc-shaped body, the disc-shaped body being a rotation solid formed by rotating a radial section about a central rotation axis by 360 degrees, the central rotation axis coinciding with a central axis of the central hole, the radial section having a first line segment and an opposing second line segment, the first contact side being defined by rotating the first line segment, the second contact side being defined by rotating the second line segment, a medium-diameter axis being defined to passing a mid-point of the second line segment and extending normally relative to the second line segment, the radial section being mirror-symmetrical relative to the medium-diameter axis, the medium-diameter axis being non-parallel to the central rotation axis, the first line segment being curve-shaped, the notch of the curve shape being oriented towards the mid-point of the second line segment, a point of intersection of the medium-diameter axis and the first line segment being a point such that a vertical distance measured from this point to a straight line segment connecting between both terminals of the second line segment is the greatest one among vertical distances measured from all points in the first line segment to the same straight line segment, wherein in a free state of the pre-tightening disc spring, the minimum thickness between the first and second contact sides of the disc-shaped body is greater than ¾ of a free height of the disc-shaped body and greater than 1/12 of a free outer diameter of the disc-shaped body.

IPC Classes  ?

• F16B 39/24 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
• B21F 3/08 - Coiling wire into particular forms to flat spiral

Goods & Services

Tie plates; fittings of metal for compressed air ducts; junctions of metal for pipes; bolts of metal; rings of metal; washers of metal; shims; ironmongery; reinforcing materials of metal for machine belts; flanges of metal [collars].

Goods & Services

metal tie plates as hardware for connecting wood members; fittings of metal for compressed air ducts; junctions of metal for pipes; bolts of metal; screw rings of metal; washers of metal for sealing; metal shims; ironmongery, namely, metal hardware in the nature of screws, bolts, washers; reinforcing materials of metal for machine belts; flanges as collars of metal for fastening pipes

Abstract

The present application discloses a cartridge type mechanical sealing device for sealing liquid, the sealing device including a gland, a rotating ring adaptor assembly, a rotating ring, a stationary ring adaptor, a stationary ring, and a locking ring mounted around a rotating shaft. The gland is configured to be fastened to a rear end surface of the equipment enclosure; the rotating ring adaptor assembly including a front end portion configured to be in the liquid and supporting the rotating ring and a rear end portion extending through the gland to be surrounded by the locking assembly which is configured to fasten the rotating ring adaptor assembly to the rotating shaft; the stationary ring adaptor is fastened to a rear end surface of the gland; and when the stationary ring adaptor is released from the gland, a rotating ring adaptor of the rotating ring adaptor assembly or the stationary ring adaptor can be pulled along the rotating ring in a direction away from the liquid so as to be separated from the gland, thereby separating the rotating ring and the stationary ring to release the sealing interface and exposing the rotating ring and the stationary ring to the outside air respectively and providing for in-line maintenance and a reduction of possible leakage points.

IPC Classes  ?

• F16J 15/34 - Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member

Abstract

A mechanical sealing device includes rotating and stationary rings, and rotating and stationary ring adaptors mounted around a rotating shaft. An end surface of the rotating ring adjoins an end surface of the stationary ring by means of springs. The sealing interface includes an adjoining point that is in contact with a liquid medium in an axial section of the device, and an annular peripheral rim surrounding the rotating and stationary rings for agitating the liquid medium. At least a part of the peripheral rim is formed with an inclined surface oriented toward the adjoining point, the inclined surface defining a start point close to the adjoining point and an end point away from the adjoining point in the axial section of the device. The start point is spaced apart from the adjoining point while the end point extends not beyond the adjoining point in the axial direction.

IPC Classes  ?

• F16J 15/32 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
• F16J 15/18 - Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
• F16J 15/3252 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
• F16J 15/3276 - Mounting of sealing rings with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted

Abstract

A split oil seal composed of double springs and double rings comprises an elastic outer ring intended to be statically mounted in a cavity outside a bearing box or gear box, and an elastic inner ring intended to be sleeved on a shaft of the device and held by the outer ring. The outer ring has an outer ring cut and the inner ring has an inner ring cut. The split oil seal further comprises a radial forcing element and a circumferential forcing element, wherein the radial forcing element exerts tension in both directions directed to outer circumferences and inner centers of both the outer ring and the inner ring in radial directions thereof, and the circumferential forcing element exerts a circumferential closing force to the inner ring. By using the split oil seal composed of double springs and double rings of the present invention, the advantages of convenient mounting and removal as well as strong anti-disengaging ability are achieved.

IPC Classes  ?

• F16J 15/3272 - Mounting of sealing rings the rings having a break or opening, e.g. to enable mounting on a shaft otherwise than from a shaft end

Abstract

A mechanical seal for sealing against a rotating shaft includes a static ring positioned about the shaft and a movable ring positioned about the shaft and in sliding contact with the static ring. The movable ring is rotatable with the shaft and a tray sleeve is attached to one of the movable ring and the static ring, with the tray sleeve being selectively movable in an axial direction along the shaft. Wear between the static ring and the movable ring causes the tray sleeve to move in the axial direction. The tray sleeve includes an indicator and relative movement of the indicator along the shaft is in proportion to the wear between the static ring and the movable ring.

IPC Classes  ?

• F16J 15/34 - Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member

Abstract

Disclosed is a mechanical seal with an outer forwardly-inclined rim for liquids, including a moving ring and a stationary ring; end portions of the moving ring and the stationary ring are seal end faces in mutual friction and perpendicular to the axis, for preventing the liquid at one side of the seal end faces from leaking to the other side; one of the moving ring and the stationary ring is provided with a rim at one side in contact with liquid, and the rim is protruding in its radial direction and inclined toward the other ring, so that when a transmission device runs, liquid turbulence occurs to an inclined surface of the rim, and the generated centrifugal force makes particles or impurities in the liquid distant from the seal end faces, so as to effectively prevent particles or impurities in the liquid from entering the seal end faces.

IPC Classes  ?

• F16J 15/34 - Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
• F16J 15/00 - Sealings

Abstract

A mechanical seal for liquid with an axially floating tray sleeve inside, comprising a movable ring, a static ring, a locking ring and a tray sleeve, wherein the static ring is connected to a cover and a shell to be stationary, the movable ring is fixed with a shaft or a shaft sleeve through the locking ring and rotates, and the contact end faces of the movable ring and the static ring form a sealing face which is vertical to and slides against the shaft; the tray sleeve is between a sealing ring and the shaft or shaft sleeve in the direction vertical to the shaft; the tray sleeve is connected to the movable ring or the static ring near an inner end of the liquid in the axial direction; the tray sleeve extends out of the cover in the axial direction near the air end.

IPC Classes  ?

• F16J 15/34 - Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member