CN2713229Y

CN2713229Y - Mechanical sealing device

Info

Publication number: CN2713229Y
Application number: CN 200420027135
Authority: CN
Inventors: 郑小平
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-18
Filing date: 2004-05-18
Publication date: 2005-07-27
Anticipated expiration: 2014-05-18

Abstract

The utility model provides a mechanical sealing device, comprising an oil cavity end cap, a bevel oil swing ring and an oil block ring. The lower part of the oil cavity end cap is provided with an oil return hole. The outer end cap is fixed to the oil cavity end cap, and the inner hole point of the outer end cap forms a labyrinth seal with the bevel oil swing ring, the outer side of which is fixed to the oil block ring. The inner hole wall of the outer end cap is provided with a ring-shaped oil slot which is communicated with the oil return hole of the oil cavity end cap. The sealing members of the utility model have no contact with each other, so no failure is caused by wearing. Simultaneously, no frictional resistance to the axis is caused by the sealing member. In particular, the installation size is the same as the framing oil seal, thus the mechanical sealing device can be used for the modification of the equipment to radically eradicate the oil leakage phenomenon.

Description

A kind of mechanical seal device

Technical field:

The utility model relates to the mechanical seal device of stress-free projecting shaft in the mechanical seal device, particularly machine oil chamber of axle of conventional machinery equipment.

Background technique:

At present, some machinery needs machine oil to come lubricating bearings, because compact structure, usually seal with skeleton oil sealing, and skeleton oil sealing is and the rotatingshaft contact seal, and after the oil sealing wearing and tearing, machine oil will leak, cause machine breakdown and befouling environment, skeleton oil sealing contacts also with rotatingshaft and can produce frictional resistance to axle simultaneously.

Summary of the invention:

The purpose of this utility model is to provide a kind of mechanical seal device of good sealing effect.

Solution of the present utility model is: contain oil pocket end cap, inclined-plane disc and cut oil ring, spill port is arranged at the bottom of oil pocket end cap, outer end cap is fixed on the oil pocket end cap, the endoporus place of outer end cap and inclined-plane disc form a labyrinth seal, fixedly connected with a section oil ring in the disc outside, inclined-plane, an annular oil groove is arranged on the outer end cap inner hole wall, and annular oil groove communicates with spill port on the oil pocket end cap.

The gap that 1 1-2mm is arranged between inclined-plane disc and the outer end cap.

The center of annular oil groove is below the outer end cap center.

Nothing is in contact with one another between the Sealing of the present utility model, can be because of wearing and tearing do not cause inefficacy, and Sealing also not to the surface friction drag of axle, particularly because installation dimension is identical with skeleton oil sealing, can be used for the transformation of equipment simultaneously, with the radical cure oil leakage phenomenon.

Description of drawings:

Accompanying drawing is the utility model embodiment's a structural representation.

Among the figure: the 1--oil pocket; 2--oil pocket end cap; The 3--outer end cap; The 4--bearing; 5--inclined-plane disc; The 6--labyrinth seal; The 7--axle; 8--pieces together cap; 9--cuts oil ring; The 10--annular oil groove; The 11--gap; The 12--spill port.

Embodiment:

Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail:

Spill port 12 is arranged at the bottom of oil pocket end cap 2, outer end cap 3 is fixed on the oil pocket end cap 2, the endoporus place of outer end cap 3 and inclined-plane disc form a labyrinth seal 6, fixedly connected with a section oil ring 9 in disc 5 outsides in inclined-plane, an annular oil groove 10 is arranged on outer end cap 3 inner hole walls, the center of annular oil groove 10 is in the central lower of outer end cap 3, and annular oil groove 10 communicates with spill port 12 on the oil pocket end cap 2.The gap 11 that 1 1-2mm is arranged between inclined-plane disc 5 and the outer end cap 3.

During installation, the outer ring of bearing 4 is fixed in the endoporus of oil pocket end cap 2, and the inner ring of bearing 4 is fixed on the axle 7, and inclined-plane disc 5, section oil ring 9 usefulness are pieced together cap 8 and are pressed on the inner ring of bearing 4, makes inclined-plane disc 5, cuts oil ring 9 and together rotation of axle 7.When axle 7 rotations, overwhelming majority lubricant oil throws away through inclined-plane disc 5, and pushed back bearing 4 and flowed back to oil pocket 1, the gap 11 of lubricant oil between inclined-plane disc 5 and outer end cap 3 of trace, labyrinth seal 6 and reduced flow velocity, again when cutting oil ring 9, the protruding part that cuts on the oil ring 9 gets rid of annular oil groove 10 on the outer end cap 3 to remaining lubricant oil once more, and the spill port on oil pocket end cap 2 12 flows back to oil pocket 1 again.

Claims

1, a kind of mechanical seal device, contain the oil pocket end cap, outer end cap is fixed on the oil pocket end cap, it is characterized in that also containing the inclined-plane disc and cut oil ring, spill port is arranged at the bottom of oil pocket end cap, and the endoporus place of outer end cap and inclined-plane disc form a labyrinth seal, fixedlys connected with a section oil ring in the disc outside in inclined-plane, an annular oil groove is arranged on the outer end cap inner hole wall, and annular oil groove communicates with spill port on the oil pocket end cap.

2, a kind of mechanical seal device according to claim 1 is characterized in that having between inclined-plane disc and the outer end cap gap of 1 1-2mm.

3, a kind of mechanical seal device according to claim 1, the center that it is characterized in that annular oil groove is below the outer end cap center.