CN204921710U - Interior circle grinds seal structure of pole - Google Patents

Abstract

The utility model discloses an interior circle grinds seal structure of pole, it includes from interior toward installing outward at rotatory epaxial isolations flywheel, bearing cap and apron, keeps apart in the flywheel to be provided with first annular near the one end of bearing cap, the bearing cap includes first boss, second boss and third boss that the external diameter scales up in proper order, installs high -speed rotary seal between first boss and the isolation flywheel, forms annular mass flow groove between the surface of first boss and the inner wall of first spout, and diversion channels and external intercommunication are passed through to the mass flow groove. Keeping apart the flywheel and getting rid of water, grit toward the outside when high -speed rotation, play the effect of isolation, the mass flow groove prevents to keep apart the flywheel does not have water, the sand entering kept apart totally inside, can down flow out along mass flow groove and diversion channels voluntarily when dang shui and sand arrival mass flow groove, has still increased through high -speed rotary seal, does the protection of third level. The utility model is suitable for an among the interior circle grinds seal structure of pole.

Description

A kind of sealing configuration of inner circle mill bar

Technical field

The utility model relates to a kind of sealing configuration, particularly a kind of sealing configuration of inner circle mill bar.

Background technique

Inner circle mill bar is high-speed rotating equipment, and usually supported rotor by two bearing mechanical at two, general running shaft has a sleeve stretching out rotating equipment at least, exports or transferring power.Due to can not grazing between the running shaft that rotates and static sleeve, must certain interval be kept between the two, but in order to prevent foreign material and liquid substances from entering into Bearing inner causing trouble by this gap.Multiple protective measures are adopted in prior art.The waterproof sealing structure of modal protective measures has two kinds: one is contact sealing, namely on end cap or outer bearing cover, one or many rubber backbone sealing rings are installed, static rubber sealing ring inner ring directly binds round on the rotary shaft, play seal action, can lose efficacy because of aging after but this rubber sealing ring uses for a long time, and groove can be ground on the rotary shaft, another kind is non-contact seals, usual employing labyrinth sealing, namely coordinate at electric motor end cap or the small―gap suture of establishing multiple tracks canine tooth staggered between bearing end cover with back-up ring, also maze trough is claimed to coordinate, back-up ring is fixing on the rotary shaft, with running shaft synchronous rotary, this structure there will not be feature contacts to wear and tear, but because have gap, even if labyrinth is many again, water is still by flowing into maze trough from non-contacting gap, because maze trough bottom does not have spilled water hole, water cannot be discharged, take care of the pence, finally progressively be deep into inner circle mill bar along maze trough inner, cause corrosion, bearing is caused damage.

Model utility content

The purpose of this utility model, is to provide a kind of inner circle to grind the sealing configuration of bar.

The solution that the utility model solves its technical problem is: a kind of sealing configuration of inner circle mill bar, it comprises from the interior isolation flywheel installed outward on the rotary shaft, bearing cap and cover plate, described cover plate and bearing cap are fixed on sleeve successively by lock screw, one end near bearing cap in described isolation flywheel is provided with the first annular groove, described bearing cap comprises the first boss that external diameter increases progressively successively, second boss and the 3rd boss, the outer surface of outer surface and isolation flywheel that described first boss is embedded in described second boss after in the first annular groove flushes, High Rotation Speed sealing is installed between the first boss and isolation flywheel, the afflux groove of ring-type is formed between the outer surface of the first boss and the inwall of the first chute, described afflux groove is in communication with the outside by drainage channel.

As the further improvement of technique scheme, one end of described isolation flywheel is successively through pressing the angular contact ball bearing touched running shaft and sleeve after the first boss, the second boss and the 3rd boss.

As the further improvement of technique scheme, described High Rotation Speed sealing comprises polyurethane sealing ring and metal frame, described polyurethane sealing ring contacts with the internal surface of the first boss, one end of described metal frame is embedded in polyurethane sealing ring inside, and another side pressure of metal frame is touched on the sidewall of the first annular groove.

As the further improvement of technique scheme, first flow is formed between the end face of described isolation flywheel and the end face of the second boss, form the second runner between the outer surface of described isolation flywheel and the internal surface of cover plate, described first flow and the second runner are communicated to and form described drainage channel.

The beneficial effects of the utility model are: water, sand can get rid of toward outside when High Rotation Speed by the isolation flywheel in the utility model; play the effect of isolation; afflux groove prevents that isolation flywheel from not having completely isolated water, sand enters inside; Dang Shui and sand can down flow out along afflux groove and drainage channel when arriving afflux groove automatically; also add and sealed by High Rotation Speed; do the protection that third layer is secondary, High Rotation Speed sealing has the function of sealing water and sand equally.The utility model is applicable in the sealing configuration of inner circle mill bar.

Accompanying drawing explanation

In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present utility model, instead of whole embodiment, and those skilled in the art, under the prerequisite not paying creative work, can also obtain other design proposals and accompanying drawing according to these accompanying drawings.

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of double dot dash line circle institute frame choosing part in Fig. 1.

Embodiment

Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.Obviously; described embodiment is a part of embodiment of the present utility model, instead of whole embodiment, based on embodiment of the present utility model; other embodiments that those skilled in the art obtains under the prerequisite not paying creative work, all belong to the scope of the utility model protection.In addition, all connection/annexations mentioned in literary composition, not singly refer to that component directly connects, and refer to and according to concrete performance, can connect auxiliary by adding or reducing, and form more excellent connecting structure.

With reference to Fig. 1 ~ Fig. 2, a kind of sealing configuration of inner circle mill bar, it comprises from the interior isolation flywheel 4 be arranged on outward running shaft 2, bearing cap 5 and cover plate 6, described cover plate 6 and bearing cap 5 are fixed on sleeve 1 by lock screw 8 successively, one end near bearing cap 5 in described isolation flywheel 4 is provided with the first annular groove, described bearing cap 5 comprises the first boss that external diameter increases progressively successively, second boss and the 3rd boss, the outer surface of outer surface and isolation flywheel 4 that described first boss is embedded in described second boss after in the first annular groove flushes, High Rotation Speed sealing 7 is installed between first boss and isolation flywheel 4, the afflux groove 9 of ring-type is formed between the outer surface of the first boss and the inwall of the first chute, described afflux groove 9 is in communication with the outside by drainage channel.

Water, sand can get rid of toward outside when High Rotation Speed by isolation flywheel 4; play the effect of isolation; afflux groove 9 prevents that isolation flywheel 4 from not having completely isolated water, sand enters inside; Dang Shui and sand can down flow out along afflux groove 9 and drainage channel when arriving afflux groove 9 automatically; also add by High Rotation Speed sealing 7; do the protection that third layer is secondary, High Rotation Speed sealing 7 has the function of sealing water and sand equally.

Be further used as preferred embodiment, angular contact ball bearing 3, successively through pressing the angular contact ball bearing 3 touched running shaft 2 and sleeve 1 after the first boss, the second boss and the 3rd boss, is fixed by isolation flywheel 4 and bearing cap 5 by one end of described isolation flywheel 4.

Be further used as preferred embodiment, described High Rotation Speed sealing 7 comprises polyurethane sealing ring and metal frame 70, described polyurethane sealing ring contacts with the internal surface of the first boss, one end of described metal frame 70 is embedded in polyurethane sealing ring inside, another side pressure of metal frame 70 is touched on the sidewall of the first annular groove, is bent into the knee-piece of rounding off in metal frame 70 with one end of the sidewall contact of the first annular groove.

Be further used as preferred embodiment, first flow 90 is formed between the end face of described isolation flywheel 4 and the end face of the second boss, the second runner 91 is formed between the outer surface of described isolation flywheel 4 and the internal surface of cover plate 6, described first flow 90 and the second runner 91 are communicated to and form described drainage channel, can automatically down flow out along afflux groove 9, first flow 90 and the second runner 91 when Dang Shui and sand arrive afflux groove 9.

More than that better embodiment of the present utility model is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent modification or replacement are all included in the application's claim limited range.

Claims (4)

1. the sealing configuration of an inner circle mill bar, it is characterized in that: it comprises from the interior isolation flywheel installed outward on the rotary shaft, bearing cap and cover plate, described cover plate and bearing cap are fixed on sleeve successively by lock screw, one end near bearing cap in described isolation flywheel is provided with the first annular groove, described bearing cap comprises the first boss that external diameter increases progressively successively, second boss and the 3rd boss, the outer surface of outer surface and isolation flywheel that described first boss is embedded in described second boss after in the first annular groove flushes, High Rotation Speed sealing is installed between the first boss and isolation flywheel, the afflux groove of ring-type is formed between the outer surface of the first boss and the inwall of the first chute, described afflux groove is in communication with the outside by drainage channel.

2. the sealing configuration of inner circle mill bar according to claim 1, is characterized in that: one end of described isolation flywheel is successively through pressing the angular contact ball bearing touched running shaft and sleeve after the first boss, the second boss and the 3rd boss.

3. the sealing configuration of inner circle mill bar according to claim 2, it is characterized in that: described High Rotation Speed sealing comprises polyurethane sealing ring and metal frame, described polyurethane sealing ring contacts with the internal surface of the first boss, one end of described metal frame is embedded in polyurethane sealing ring inside, and another side pressure of metal frame is touched on the sidewall of the first annular groove.

4. the sealing configuration of inner circle mill bar according to claim 1, it is characterized in that: between the end face of described isolation flywheel and the end face of the second boss, form first flow, form the second runner between the outer surface of described isolation flywheel and the internal surface of cover plate, described first flow and the second runner are communicated to and form described drainage channel.