CN205336011U - Double -deck low friction sealing device of totally -enclosed machine - Google Patents

Abstract

The utility model discloses a double -deck low friction sealing device of totally -enclosed machine, the device comprises apron, sealed pad, end cover etc.. Double -deck sealed to divide into inside and outside layer sealed, outerly sealed is formed by apron and pivot, prevents that external great pollutant from getting into the motor, the inlayer is sealed to be filled up and pivot formation by sealed, prevents external tiny particulate pollution, water entering motor, outer apron compresses tightly the sealed pad of inlayer, and sealed pad of protection inlayer is not destroyed, sealed pad is quiescent condition, when motor shaft rotates, and sealed the pad and the low rubbing contact of pivot, gasket materials is flexible graphite. The utility model has the beneficial effects of: (1 ) flexible graphite's sealed pad and apron produce the sealed effect of inside and outside bilayer, and the leakproofness is high, can be waterproof, (2 )The sealed pad of flexible graphite material has finely from lubrication action, and the heat resistance is high, with the low friction motion of motor shaft, does not have the influence to motor shaft and leakproofness, (3 )Device simple structure, easy operation, easy maintenance.

Description

A kind of bilayer low friction sealed device of totally-enclosed machine

Technical field

This utility model relates to the sealing device of a kind of totally-enclosed machine, is specifically related to the low friction sealed device of bilayer of a kind of totally-enclosed machine。

Background technology

The sealing of current totally-enclosed machine is to be formed with matched in clearance by bearing chamber end cap and machine shaft, and this mode has the disadvantage that: one is end cap can only matched in clearance with rotating shaft, it is impossible to prevent less environmental contaminants entrance motor；Two is end cap with rotating shaft with matched in clearance, and its fit dimension needs precision to calculate, it is impossible to excesssive gap can not gap too small。If excesssive gap, sealing without；If gap is too small, end cap and rotating shaft are easy to produce rigidity friction, dangerous。And have to be safe and reliable in military products field, simple to operate, easy to maintenance。For above-mentioned situation, neither increase installing space, again under premise economic, safe and reliable, develop the low friction sealed device of bilayer of a kind of totally-enclosed machine。

Summary of the invention

The purpose of this utility model is in that to provide the low friction sealed device of bilayer of a kind of totally-enclosed machine, and this device has double-layer seal, is bolted connection, convenient to install and maintain, simple to operate, and sealing is high。

This utility model is achieved in that the low friction sealed device of the bilayer of a kind of totally-enclosed machine, is made up of cover plate, fastening bolt, sealing gasket, end cap and rotating shaft；Double-layer seal is divided into inside and outside layer to seal, and outer layer seals and formed by cover plate and rotating shaft, and cover plate is bolted on electric motor end cap, transfixion, and cover plate coordinates with small gap with rotating shaft, it is prevented that the bigger pollutant in the external world enter motor, and sealing is higher；Internal layer seals and is formed by sealing gasket and rotating shaft, and sealing gasket and rotating shaft are with interference fits, it is prevented that extraneous fine particle pollutant, water enter motor, and sealing is high；Outer layer cover plate compresses internal layer sealing gasket, and protection internal layer sealing gasket is not destroyed；Sealing gasket is in impaction state, transfixion, when machine shaft rotates, and sealing gasket and the low CONTACT WITH FRICTION of rotating shaft；Described gasket material is soft graphite, has self-lubricating function, and thermostability is high so that during its CONTACT WITH FRICTION low with rotating shaft, on machine shaft and sealing without impact。

The utility model has the advantage of: the sealing gasket of soft graphite and cover plate produce inside and outside double-layer seal effect, and sealing is high, waterproof；The sealing of flexible graphite material is lined with good self-lubricating function, and thermostability is high, fricting movement low with machine shaft, on machine shaft and sealing without impact；Device is fastened by bolts, simple in construction, installs simple to operate, easy to maintenance。

Accompanying drawing explanation

Fig. 1 is the low friction sealed installation drawing of bilayer of totally-enclosed machine。

Fig. 2 is front view (a) and the right view (b) of sealing gasket。

Fig. 3 is front view (a) and the right view (b) of cover plate。

In FIG, 1, cover plate；2, fastening bolt；3, end cap；4, sealing gasket；5, rotating shaft。

Detailed description of the invention

Illustrate embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing, but the present embodiment is not limited to this utility model, every employing analog structure of the present utility model and similar change thereof, all should list protection domain of the present utility model in。

As it is shown in figure 1, the low friction sealed device of the bilayer of a kind of totally-enclosed machine, it is made up of cover plate 1, fastening bolt 2, sealing gasket 4, end cap 3 and rotating shaft 5；Double-layer seal is divided into inside and outside layer to seal, and outer layer seals and formed by cover plate 1 and rotating shaft 5, and cover plate 1 is fixed on electric motor end cap 3 by fastening bolt 2, transfixion, cover plate 1 coordinates with small gap with rotating shaft 5, it is prevented that the bigger pollutant in the external world enter motor, and sealing is higher；Internal layer seals and is formed by sealing gasket 4 and rotating shaft 5, and sealing gasket 4 and rotating shaft 5 are with interference fits, it is prevented that extraneous fine particle pollutant, water enter motor, and sealing is high；The cover plate 1 of outer layer compresses internal layer sealing gasket 4, and protection internal layer sealing gasket 4 is not destroyed；Sealing gasket 4 is in impaction state, transfixion, when machine shaft 5 rotates, and sealing gasket 4 and the low CONTACT WITH FRICTION of rotating shaft 5；Described sealing gasket 4 material is soft graphite, has self-lubricating function, and thermostability is high so that during its CONTACT WITH FRICTION low with rotating shaft, on machine shaft and sealing without impact。Device connects by fastening bolt 2, and simple in construction is installed simple to operate, easy to maintenance。

Claims (2)

1. the low friction sealed device of the bilayer of totally-enclosed machine, is made up of cover plate, fastening bolt, sealing gasket, end cap and rotating shaft；Double-deck low friction sealed it is divided into internal layer to seal and outer layer seals；Outer layer seals and is formed by cover plate and rotating shaft, and cover plate is bolted on the end cap of motor, transfixion, and cover plate coordinates with small gap with rotating shaft；Internal layer seals and is formed by sealing gasket and rotating shaft, and sealing gasket and rotating shaft are with interference fits；The cover plate of outer layer compresses the sealing gasket of internal layer；Sealing gasket is in impaction state, transfixion, when machine shaft rotates, and sealing gasket and the low CONTACT WITH FRICTION of rotating shaft。

2. the low friction sealed device of the bilayer of a kind of totally-enclosed machine according to claim 1, it is characterised in that: the material of described sealing gasket is soft graphite。