CN2527790Y - Closed filings-removing magnetic mechanical oil seal - Google Patents

Abstract

Disclosed is a closed swarf-removing magnetic mechanical seal which is composed of an O-shaped ring 1, a moving ring 2, a moving ring seat 3, a stationary ring 4, a stationary ring seat 5 and a magnet 6. Wherein, the moving ring 2 and the stationary ring 4 are respectively inlaid on the moving ring seat 3 and the stationary ring seat 5; the stationary ring seat 5 is in stationary fit with a bearing cover 8 to form stationary seal in a shaft 7 and the bearing cover 8; the inner hole of the moving ring seat 3 is in O-shaped ring seal with the shaft 7 and the moving ring seat 3 and the moving ring 2 are driven by the friction force of the O-shaped ring. A circular magnet or a plurality of columnar magnets 6 are positioned in the cavity formed between the moving ring seat 3 and the stationary ring seat 5 which are attached together by the magnet(s) 6; the moving ring 2 and the stationary ring 4 with a small friction coefficient closely cling to each other under the action of the magnet to form moving seal. The moving ring seat 3 and the stationary ring seat 5 are attached on both ends of the magnet 6 to form a closed magnetic line of force, thereby magnetic loss and the phenomenon that the structure of the magnet inlaid in the moving ring seat is easy to be attached away by other metals are avoided, meanwhile the magnetic attachment area is enlarged by the moving ring seat 3 and the stationary ring seat 5, so that iron particles in oil can be suck out while lubricating oil is ensured to be effectively sealed.

Description

Closed type debris removal magnetic mechanic oil seal

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, rubber skeleton formula oil sealing; A kind of magnetic mechanic oil seal (99228092.3) is also arranged.

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 also 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.

Existing magnetic mechanic oil seal has following deficiency: 1. magnet is set in rotating seat or the stationary seat, and rotating seat is inhaled by the metal of opposite side easily and caused leakage of oil from stationary seat.2. the not closed magnetic loss that easily causes of the magnet magnetic line of force.3. to be set in the sound ring seat shape single for magnet.4. can not effectively absorb the iron granules in the lubricant oil.

Summary of the invention

In order to overcome that existing oil sealing is easy to wear, the life-span short and the deficiency of magnetic loss is easily thrown off, had to existing Magnetic oil seal, the utility model provides a kind of closed type debris removal magnetic mechanic oil seal, this oil sealing has overcome the shortcoming of above-mentioned several oil sealings, except that the advantage with above-mentioned Magnetic oil seal; Its more characteristics are, dynamic and static ring be difficult for breaking away from (rotating seat that studs with magnet easily by the metal of opposite side inhale from); The closed no magnetic loss of the magnetic line of force; Magnet both can for uniform a plurality of columns also can be as a whole ring-type; Its another characteristics are magnetic pole enlarged areas, the irony abrasive particle in the lubricant oil effectively can be absorbed, and avoid the irony abrasive particle that bearing is worked the mischief.

This closed type debris removal magnetic mechanic oil seal has solved effectively that existing oil sealing is easy to wear, the life-span is short, easily throw off, the problem of no debris removal function.

The technological scheme that its technical problem that solves the utility model adopts is: a stationary seat and a rotating seat are arranged between axle and bearing gland, in the cavity that between the sound ring seat, forms, a ring magnet or a plurality of uniform cylindrical magnetic iron are arranged, magnet is inhaled the sound ring seat together, on the sound ring seat, stud with the less dynamic and static ring of friction factor respectively, dynamic and static ring is close together under the effect of magnet, form motive sealing, stationary seat and bearing gland stationary fit form static seal, between rotating seat endoporus and the axle "O is arranged, frictional force by this ring drives rotating seat and rotating ring rotation, and " O " ring seals the gap between rotating seat and the axle simultaneously.The sound ring seat is inhaled the two ends at magnet

The beneficial effects of the utility model are, on the basis of effective sealing lubricating oil, the sound ring seat is inhaled at the two ends of magnet, be difficult for throwing off, simultaneously closure the magnetic line of force, do not produce magnetic loss, enlarged the magnetic pole area again, can effectively the iron granules in the oil be adsorbed.

Description of drawings

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

Fig. 1 is of the present utility model one routine sectional drawing

Among Fig. 1: 1. " O " ring, 2. rotating ring, 3. rotating seat, 4. stationary ring, 5. stationary seat, 6. magnet, 7. spool, 8. bearing gland.

Embodiment

In Fig. 1, stationary seat 5 and bearing gland 8 stationary fits.Be "O 1 sealing between rotating seat 3 and the axle 7, should drive rotating seat 3 and rotating ring 2 rotations by " O " ring 1.Between sound ring seat 3,5, magnet 6 is inhaled sound ring seat 3,5 together.Stud with dynamic and static ring 2 and 4 respectively on sound ring seat 3,5, dynamic and static ring 2,4 forms motive sealing under the effect of magnet 6.Sound ring seat 3,5 is inhaled at the two ends of magnet 6, with magnetic line of force closure.The rotating seat 3 or the stationary seat 5 of oil side can be absorbed the iron granules in the oil.

Claims (3)

1. a closed type debris removal magnetic mechanic oil seal is made up of magnet, static and dynamic sealing ring, sound ring seat and " O " ring, and it is characterized in that: magnet is between the sound ring seat, and the sound ring seat is inhaled the two ends at magnet.

2. closed type debris removal magnetic mechanic oil seal according to claim 1 is characterized in that: the loop configuration that magnet is as a whole.

3. closed type debris removal magnetic mechanic oil seal according to claim 1 is characterized in that: magnet is a plurality of uniform column constructions.