CN201034167Y

CN201034167Y - Rotary axis sealing apparatus

Info

Publication number: CN201034167Y
Application number: CNU200720079637XU
Authority: CN
Inventors: 王云清; 万海平; 潘文建
Original assignee: SICHUAN QINGCHENG MACHINE CO Ltd
Current assignee: SICHUAN QINGCHENG MACHINE CO Ltd
Priority date: 2007-05-23
Filing date: 2007-05-23
Publication date: 2008-03-12
Anticipated expiration: 2017-05-23

Abstract

The utility model discloses a sealing device for a rotating shaft, belonging to the technical field of shaft sealing, which comprises a bearing arranged on the rotating shaft, an oil storage ring arranged at the inner side of the bearing, and a bearing fastener arranged at the outside of the bearing; wherein, a circular groove is arranged at the external circumference surface of the bearing fastener and a labyrinth type alloy sealing ring is arranged in the circular groove; moreover, a chamfer is arranged for the inner ring at the side of the bearing, and forms an air pocket along with the outer circumferential surface of the rotating shaft. The utility model has the advantages of effectively preventing the dirt from entering the bearing, avoiding running-off of lubricating oil for the bearing so that the rotating shaft does not need lubricating and maintenance within 5 years, therefore greatly reducing maintenance cost, and particularly being applicable for sealing high-speed rotating shafts.

Description

The rotation shaft seal

Technical field

The utility model relates to a kind of high speed rotating shaft seal, especially relates to a kind of sealing of spindles device of woodworking four-side planing machine.

Background technique

At present, be to prevent that extraneous dust from entering bearing on the one hand for the sealing of running shaft, be to prevent that the lubricant oil in the bearing from flowing away on the other hand, it is good lubricated to make bearing obtain.Traditional shaft sealing method is to adopt the malthoid sealing, because the high speed rotating of running shaft, the malthoid sealing is easy to wearing and tearing, lose seal action, cause dust to enter bearing, the lubricant oil in the bearing runs off, need regularly inject lubricant oil to bearing, thereby maintenance cost is very high.

Summary of the invention

At deficiency of the prior art, the purpose of this utility model is: provide a kind of dust that can effectively prevent to enter bearing and prevent the rotation shaft seal that bearing oil runs off.

The technical solution of the utility model is: a kind of rotation shaft seal, comprise the bearing that is loaded on the running shaft, the oil storage ring that is loaded on the bearing inboard, and the bearing fastening piece that is loaded on the bearing outside; Wherein, the outer peripheral surface of bearing fastening piece is provided with circular trough, and mazy type alloy seal ring is housed in the described circular trough; And the oil storage ring is near being equipped with chamfering in bearing one side, and this chamfering and running shaft outer peripheral surface form air pocket.

Described mazy type alloy seal ring has good seal action owing to the wearing and tearing that are subjected to of high speed rotating of axle are very little, can prevent effectively that dust from entering bearing, also can effectively prevent the loss of bearing oil.Described oil storage ring is near being equipped with chamfering in bearing one side, this chamfering and running shaft outer peripheral surface form air pocket, according to aerodynamic principle, when the running shaft high speed rotary, the inner negative pressure that forms of the bearing of running shaft, effectively prevented the loss of bearing oil, thereby running shaft need not the oiling maintenance in 5 years.

The bearing fastening piece of running shaft one step bearing described in the utility model adopts the bearing inner race locking nut, and the bearing fastening piece of the other end bearing adopts the belt pulley that has axle sleeve; Wherein, circular trough is located at respectively on the outer peripheral surface of axle sleeve of bearing inner race locking nut and belt pulley.

The angle that the interior ring chamfering of oil storage ring described in the utility model adopts is 25 °～35 °.

The beneficial effects of the utility model are: prevent that effectively dust from entering bearing, prevent that bearing oil runs off, running shaft need not to refuel in 5 years and safeguards, greatly reduced maintenance cost.

The utility model is described in further detail below in conjunction with drawings and Examples.

Description of drawings

Fig. 1 is the cross-sectional view of the utility model preferred embodiment;

Fig. 2 is the A place partial enlarged drawing of Fig. 1;

Fig. 3 is the B place partial enlarged drawing of Fig. 1;

Wherein, reference character: 1 is running shaft, and 2 is the bearing inner race locking nut, and 3 is bearing, and 4 is circular trough, and 5 is mazy type alloy seal ring, and 6 is air pocket, and 7 are the oil storage ring, and 8 is chamfering, and 9 is belt pulley.

Embodiment

Preferred embodiment

As shown in Figure 1 to Figure 3, a kind of rotation shaft seal comprises the bearing 3 that is loaded on the running shaft 1, the oil storage ring 7 that is loaded on bearing 3 inboards, and the bearing fastening piece that is loaded on bearing 3 outsides; The bearing fastening piece of described running shaft 1 one step bearings 3 adopts bearing inner race locking nut 2, and the bearing fastening piece of the other end bearing 3 adopts the belt pulley 9 that has axle sleeve; Wherein, the outer peripheral surface of bearing inner race locking nut 2 is provided with circular trough 4, and the outer peripheral surface of the axle sleeve of the close bearing of belt pulley 9 is provided with circular trough 4, and mazy type alloy seal ring 5 is housed in circular trough 4; And oil storage ring 7 is near being equipped with chamfering 8 in bearing one side, and this chamfering and running shaft 1 outer peripheral surface form air pocket 6, and when the axle high speed rotating, this air pocket makes rotating shaft bearing inside form negative pressure all the time, has effectively prevented the loss of bearing oil; The angle that the interior ring chamfering 8 of oil storage ring 7 adopts is in 25 °～35 ° scopes.

Claims

1. a rotation shaft seal comprises the bearing (3) that is loaded on the running shaft (1), the oil storage ring (7) that is loaded on bearing (3) inboard, and the bearing fastening piece that is loaded on bearing (3) outside; Wherein, the outer peripheral surface of bearing fastening piece is provided with circular trough (4), it is characterized in that: mazy type alloy seal ring (5) is housed in the described circular trough (4); And oil storage ring (7) is near being equipped with chamfering (8) in bearing one side, and this chamfering and running shaft (1) outer peripheral surface forms air pocket (6).

2. rotation shaft seal according to claim 1, it is characterized in that: the bearing fastening piece of described running shaft (1) one step bearing (3) adopts bearing inner race locking nut (2), and the bearing fastening piece of the other end bearing (3) adopts the belt pulley (9) that has axle sleeve; Wherein, circular trough (4) is located at respectively on the outer peripheral surface of axle sleeve of bearing inner race locking nut (2) and belt pulley (9).

3. rotation shaft seal according to claim 1 is characterized in that: the angle that the interior ring chamfering (8) of described oil storage ring (7) adopts is 25 °～35 °.