CN2527775Y

CN2527775Y - Closed filings-removing floating ring oil seal

Info

Publication number: CN2527775Y
Application number: CN 02212065
Authority: CN
Inventors: 杨若峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-01
Filing date: 2002-01-01
Publication date: 2002-12-25
Anticipated expiration: 2012-01-01

Abstract

Disclosed is a closed swarf-removing floating ring oil seal which relates to a bearing lubricating oil seal technique. In the structure of the utility model, a columnar magnet is inlaid on a floating ring which is sleeved on a shaft and forms slit seal or labyrinth seal with the shaft, or an annular magnet is sleeved in connection on the outer circle of the floating ring; the floating ring and the magnet are adsorbed on static seal rings at both ends of the oil seal to form static seal; the magnetic force of line of the magnet is closed by the static seal rings at both ends to avoid magnetic abrasion, and the adsorbing area of the magnet end face is enlarged so that the iron particulates in lubricating oil can be effectively removed; the floating ring can complement the float of the shaft, the clearance between the floating ring and the shaft can be smaller than the general fixed labyrinth oil seal and no abrasion is produced between the floating ring and the shaft. The utility model is characterized by compact structure, simple structure and long service life.

Description

Closed type debris removal floating ring oil sealing

Affiliated technical field

The utility model relates to a kind of rotary machine bearing oil sealing technique

Background technique

At present, known bearing lubrication oil seal (hereinafter to be referred as oil sealing) mainly adopts mazy type or rubber skeleton formula oil sealing, the gap of labyrinth oil seal itself and rotating shaft can not be excessive or too small, too small easy mill axle, excessive then leakage of oil, and because oil sealing is fixed on the housing and the axle relative fixed, can not adapt to and the floating of compensating shaft, the shaft vibration meeting is ground bigger and bigger to the oil sealing gap, finally causes leakage of oil; Though and rubber skeleton formula oil sealing has compensating action, can produce wearing and tearing to axle, self also can wear and tear, and the two life-span is all shorter.

Summary of the invention

In order to overcome the deficiency that existing oil sealing is easy to wear and the life-span is short, the utility model provides a kind of oil sealing, this oil sealing is floating of compensating shaft automatically, and can doing very for a short time with the gap of axle, (general oil sealing gap, labyrinth be 0.3-0.6mm, the utility model can be as small as 0.05-0.1mm) be can not produce wearing and tearing in 1/6 of oil sealing gap, labyrinth to axle; Its another characteristics are the irony abrasive particle in the oil to be adsorbed onto it self, avoid the irony abrasive particle that bearing is worked the mischief.

The technological scheme that its technical problem that solves the utility model adopts is: two stationary seal rings are arranged between axle and bearing gland, one floating ring is arranged between two stationary seal rings, stud with magnet in the floating ring or at floating ring periphery socket ring magnet, magnet is inhaled floating ring on any one stationary seal ring, form the end face static seal, floating ring forms clearance seal or labyrinth seal with axle, because floating ring floats with axle and inhales all the time on stationary seal ring, has reached the purpose of sealing; Simultaneously, two stationary seal rings make the magnet flux loop closure on the floating ring magnet do not have magnetic loss, and the irony particulate in the oil are adsorbed on the stationary seal ring.

The beneficial effects of the utility model are, what fluctuate hermetical ring can compensating shaft floats, make it with the gap of axle can be littler; There are not wearing and tearing between axle and the seal ring; Magnet on the floating ring can adsorb iron granules in the oil.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Among Fig. 1: 1. spool, 2. stationary seal ring, 3. bearing gland, 4. stationary seal ring, 5. floating ring, 6. magnet.

Embodiment

In Fig. 1, stationary seal ring 2,4 with bearing gland 3 stationary fits and the sealing, its endoporus has enough gaps (being generally 0.6-1.0mm) with axle 1, magnet 6 both can be cylindricality and had been set in floating ring 5 the insides, also can be annular and be enclosed within floating ring 5 outsides, floating ring 5 is inhaled by magnet 6 and constitute the end face static seal on stationary seal ring 2 or 4.Floating ring 5 be enclosed within on the axle 1 and and axle 1 between the gap of 0.05-0.1mm is arranged, floating ring 5 inside diameter surfaces both can be cylinders, also can be profile of tooth or rectangle groove, floating ring 5 constitutes a clearance seal or a labyrinth seal with axle 1.When axle 1 floats, drive floating ring 5 and be positioned at a certain position in the work, floating ring 5 is inhaled on stationary seal ring 2 or 4 by the magnetic force of magnet 6, constitutes the end face static seal, and relative static with axle 1, constitutes clearance seal or labyrinth seal.Stationary seal ring 2,4 is with the magnetic line of force closure of magnet 6, and to avoid magnetic loss, stationary seal ring 2,4 has enlarged the adsorption area of magnet 6 simultaneously, is beneficial to the iron granules sucking-off in the lubricant oil.

Claims

1. a closed type debris removal floating ring oil sealing is made up of floating ring, magnet, stationary seal ring, and it is characterized in that: magnet is fixed on the floating ring, and magnet and floating ring end face are inhaled on stationary seal ring, and floating ring is enclosed within on the axle, and floating ring and magnet are between two stationary seal rings.

2. closed type debris removal floating ring oil sealing according to claim 1 is characterized in that: magnet is set in the floating ring the inside.

3. closed type debris removal floating ring oil sealing according to claim 1 is characterized in that: magnet is enclosed within the floating ring outside.

4. closed type debris removal floating ring oil sealing according to claim 1, it is characterized in that: stationary seal ring is at the two ends of floating ring and magnet.