Aigi Environmental Inc.

Environmental Gasket Company, Ltd.

Jingwei Zhao

Jun Zhang

Fan Yang

A pre-tightening disc spring that includes a disc-shaped body formed with a central hole and having opposite first and second contact sides in a thickness direction. 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, and 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 the radial section being mirror-symmetrical relative to the medium-diameter axis.

Pre-tightening disc spring, assembly comprising the pre-tightening disc spring, and method for manufacturing the pre-tightening disc spring

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.

Mechanical sealing device for sealing liquid

A dual sealing ring connector comprising: a first resilient sealing ring; a second resilient sealing ring partially embedded in the first resilient sealing ring; characterized in that the dual sealing ring connector comprises a holding portion and an inserting portion; the inserting portion is shaped to correspond to the holding portion and embedded into the holding portion; the inserting portion comprises a joint head, a joint rod, and locking tabs; the joint rod extends in a radial direction, an axial direction or a circumferential direction; the joint head is arranged at the end of the joint rod and is mirror image symmetrical with regard to its axis of symmetry; the locking tabs are arranged on both sides of the joint rod and are spaced apart from the joint rod by a distance; the locking tabs extend in the same direction as the extension direction of the joint rod, and its length in the extension direction is less than ⅔ of the sum of the lengths of the joint head and the joint rod in the extension direction of the joint rod.

Dual sealing ring connectors

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.

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.

Sealing packing

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.

Cartridge type mechanical sealing device for sealing liquid

A gasket includes a first face separated a predetermined distance from a second face, having a common though-hole. A metal frame is disposed between the first and the second faces, the metal frame supporting a first feature extending outwardly from opposing planar sides of the frame towards the first and the second faces, as well as supporting a second feature also extending outwardly from opposing planar sides of the frame towards the first and the second faces. The first feature is compressible when pressure is applied to the first and the second faces, and the second feature is incompressible when the pressure is applied to the first and the second faces. The first and the second features are continuous and concentrically aligned with one another about the through-hole, and the first feature is inclined towards the through-hole.

Toothed metallic gasket interpenetrated with compression-resistant steps

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.

Mechanical seal for liquid with an axially floating tray sleeve inside

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.

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.

Mechanical seal with outer forwardly-inclined rim for liquids

The present invention provides a mechanical packing conversion apparatus integrating packaging, measuring, cutting and protecting functions, comprising a box, a measuring scale and a cutting mechanism. An upper cover of the box of the apparatus and a side plate connected to the upper cover can be overturned and opened from side faces, and the cutting mechanism is disposed on a sidewall in the box; the cutting mechanism comprises a head and a base, the head being fixed to the base, a handle, a transmission member and a blade all successively connected being disposed in the head; a through hole is formed at a bottom end of the head, and the blade is placed vertically above the through hole and is communicated with the through hole; a groove configured to receive the measuring scale is provided at a bottom end of the base; and the measuring scale is fixed to the bottom inside the box.

Growing community of inventors

Jiangsu, China

Jingwei Zhao