초록 ▼

A bi-direction rotatable face seal with spiral grooves is provided comprising: a rotating ring with a sealing face sealed and fixed on a rotary shaft; a stationary ring with a sealing face mounted in a casing, which is sealed and axially aligned by means of an elastomeric O-ring, a thrust ring, spri

A bi-direction rotatable face seal with spiral grooves is provided comprising: a rotating ring with a sealing face sealed and fixed on a rotary shaft; a stationary ring with a sealing face mounted in a casing, which is sealed and axially aligned by means of an elastomeric O-ring, a thrust ring, springs and anti-rotating pins; the sealing face of the stationary ring is pushed into engagement with the sealing face of the rotating ring to form a sealing interface; sealing fluid is located on high pressure side of the sealing interface; the rotating ring can rotate relative to the stationary ring in bi-direction without contact. The spiral groove groups near a high pressure side are arranged on at least one sealing face of the rotating ring and the stationary ring; the equally-spaced spiral groove groups with segment lands distribute in circumferential direction; each spiral groove group is composed of one radial fluid feed-in groove and at least three rows of spiral grooves with spiral lands arranged in radial direction at equal pitch; the spiral grooves with spiral lands distribute symmetrically or quasi-symmetrically on the left side and the right side of the radial fluid feed-in groove, which can pump the sealing fluid downstream in bi-directional rotation; a non-grooved annular flat clam nearby low pressure side is arranged on the sealing face acting as a flow restrict dam and static sealing area.

대표청구항 ▼

A bi-direction rotatable face seal with spiral grooves is provided comprising: a rotating ring with a sealing face sealed and fixed on a rotary shaft; a stationary ring with a sealing face mounted in a casing, which is sealed and axially aligned by means of an elastomeric O-ring, a thrust ring, spri

A bi-direction rotatable face seal with spiral grooves is provided comprising: a rotating ring with a sealing face sealed and fixed on a rotary shaft; a stationary ring with a sealing face mounted in a casing, which is sealed and axially aligned by means of an elastomeric O-ring, a thrust ring, springs and anti-rotating pins; the sealing face of the stationary ring is pushed into engagement with the sealing face of the rotating ring to form a sealing interface; sealing fluid is located on high pressure side of the sealing interface; the rotating ring can rotate relative to the stationary ring in bi-direction without contact. The spiral groove groups near a high pressure side are arranged on at least one sealing face of the rotating ring and the stationary ring; the equally-spaced spiral groove groups with segment lands distribute in circumferential direction; each spiral groove group is composed of one radial fluid feed-in groove and at least three rows of spiral grooves with spiral lands arranged in radial direction at equal pitch; the spiral grooves with spiral lands distribute symmetrically or quasi-symmetrically on the left side and the right side of the radial fluid feed-in groove, which can pump the sealing fluid downstream in bi-directional rotation; a non-grooved annular flat clam nearby low pressure side is arranged on the sealing face acting as a flow restrict dam and static sealing area. lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged. The design provides a seal having performance that is comparable to that of dual cone face seals at a much lower cost and in a much smaller assembly. Seals made according to this design can easily be made in standard sizes that can serve as direct replacements for previously available seals.