CN214999387U - Sealing structure of vibrator - Google Patents

Abstract

The utility model discloses a seal structure of vibrator, including establishing the oil blanket that seals in the bearing frame outside, the oil blanket includes perpendicular to rotor shaft and the bottom plate that links firmly with the rotor shaft is concentric, be equipped with the sealing washer between the side of bottom plate and bearing frame tip, the lubricating intracavity at sealing washer middle part is filled there is lubricating grease. The structure has good sealing performance, and can effectively avoid the damage of the motor caused by the entering of dust and water vapor into the motor and the bearing in the environment of heat dissipation of convection wind.

Description

Sealing structure of vibrator

Technical Field

The utility model belongs to the vibrator field, concretely relates to seal structure of vibrator.

Background

A gap is formed between the rotor shaft of the common vibrator and the bearing seat according to the rotation requirement, the gap is arranged along the axis direction of the rotor, dust easily enters the gap, and the service life of the bearing and the service life of a motor can be shortened. In the prior art, sealing structures such as sealing rings are arranged on a bearing seat, but the sealing structures are fixed on the bearing seat and cannot synchronously rotate along with a rotor, and gaps still exist between the bearing seat and a rotor shaft, so that dust cannot be prevented from entering. Especially when the motor shuts down the cooling, inside cooling can form the negative pressure, leads to inside steam can get into motor bearing and solenoid from the gap, makes bearing life-span reduction and solenoid insulating reduction, and then influences the motor life-span.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model aims to provide a sealing structure of vibrator, its sealing performance is good, can effectively avoid under the radiating environment of convection current wind, dust and steam get into the motor damage that motor and bearing inside arouse.

In order to realize the purpose, the utility model discloses a technical scheme be:

the sealing structure of the vibrator comprises an oil sealing cover arranged on the outer side of a bearing seat, wherein the oil sealing cover comprises a bottom plate which is perpendicular to a rotor shaft and is fixedly connected with the rotor shaft concentrically, a sealing ring is arranged between the bottom plate and the side face of the end part of the bearing seat, and lubricating grease is filled in a lubricating cavity in the middle of the sealing ring.

Preferably, the edge of the bottom plate close to one side of the bearing seat is vertically provided with a folded edge, and the folded edge is rotatably connected with the end part of the bearing seat.

Preferably, a step extends outwards from the side face of the end part of the bearing seat, and the sealing ring is sleeved on the step and is abutted against the bottom plate.

Preferably, the sealing ring adopts a vd sealing ring, an O-shaped sealing ring or other oil sealing structures.

Preferably, the bottom plate of the oil seal cover adopts a circular shape or other symmetrical structural shapes.

The utility model discloses the beneficial effect who has does:

1. the utility model discloses a cooperation of oil blanket and bearing frame tip can carry out effectual separation to outside dust, effectively strengthens the sealing performance of bearing frame and rotor shaft junction department.

2. The bottom plate of the oil seal cover is in a circular or other symmetrical structural shape, so that the rotation balance of the rotor shaft cannot be influenced, and further the influence on the vibration balance of the vibrator is avoided.

3. Lubricating grease is filled in the lubricating cavity in the middle of the sealing ring, a closed structure can be formed between the rotor shaft and the bearing seat in a shutdown state, the damage of dust and water vapor entering the motor and the motor caused by the inside of the bearing is effectively avoided in a convection heat radiation environment, and the service life of the motor is obviously prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

Detailed Description

As shown in fig. 1-2, the utility model provides a seal structure of vibrator, including establishing the oil blanket 2 between bearing frame 3 and eccentric block 1, bearing frame 3 middle part is run through and is installed rotor shaft 4. The oil seal cover 2 comprises a bottom plate 21 perpendicular to the rotor shaft 4 and concentrically and fixedly connected with the rotor shaft 4, and a folded edge 22 perpendicular to the edge of the bottom plate 21. Hem 22 that is close to bearing frame 3 side setting on the bottom plate 21 cooperatees with the tip of bearing frame 3, and then makes whole oil cover 2 rotate the cover and establish on the tip of bearing frame 3, can carry out effectual separation to outside dust, effectively strengthens the sealing performance of bearing frame 3 and rotor shaft 4 junction.

Because the oil seal cover 2 is arranged on the rotor shaft 4 and rotates concentrically with the rotor shaft 4, the bottom plate 21 of the oil seal cover 2 with the sealing structure adopts a circular or other symmetrical structural shapes, so that the rotation balance of the rotor shaft 4 cannot be influenced, and further the influence on the vibration balance of the vibrator is avoided.

Wherein, a sealing ring 6 is arranged in a gap between the bottom plate 21 and the end surface of the bearing seat 3, a round step 31 is arranged on the end surface of the bearing seat 3 along the peripheral outer edge of the rotor shaft 4, the sealing ring 6 is sleeved on the step 31 and is abutted against the inner side of the bottom plate 21, and a closed lubricating cavity 5 is formed between the sealing ring 6 and the rotor shaft 4. Lubricating grease is filled in the lubricating cavity 5, so that an axial gap between the rotor shaft 4 and the bearing seat 3 is wrapped in the lubricating grease in the lubricating cavity 5, and dust and water vapor can be effectively separated.

Wherein, the sealing ring 6 adopts a vd sealing ring or an O-shaped sealing ring or other oil sealing structures. Through the cooperation of lubricating grease and sealing washer 6, can form airtight structure at rotor shaft 4 and bearing frame 3 junction under the shut down dress state, avoid effectively under the radiating environment of convection current wind, dust and steam get into the motor damage that vibrator and bearing are inside to cause, show the life who increases the vibrator.

Claims (5)

1. A sealing structure of a vibrator is characterized in that: the oil seal device comprises an oil seal cover arranged on the outer side of a bearing seat, wherein the oil seal cover comprises a bottom plate which is perpendicular to a rotor shaft and is fixedly connected with the rotor shaft concentrically, a sealing ring is arranged between the bottom plate and the side surface of the end part of the bearing seat, and lubricating grease is filled in a lubricating cavity in the middle of the sealing ring.

2. The seal structure of claim 1, wherein: and a folded edge is vertically arranged at the edge of one side of the bottom plate close to the bearing seat and is rotationally connected with the end part of the bearing seat.

3. The seal structure of claim 1, wherein: the side surface of the end part of the bearing seat extends outwards to form a step, and the sealing ring is sleeved on the step and is abutted to the bottom plate.

4. The seal structure of claim 1, wherein: the sealing ring adopts vd sealing ring, O type sealing ring or seals oily structure.

5. The seal structure of claim 1, wherein: the bottom plate of the oil sealing cover adopts a circular or symmetrical structural shape.

Images