CN201301959Y

CN201301959Y - Dustproof sealing device

Info

Publication number: CN201301959Y
Application number: CNU2008201436037U
Authority: CN
Inventors: 何耀林; 井士泉; 张福祥; 冯四刚; 王子良; 李树峰
Original assignee: Tianjin Iron and Steel Co Ltd
Current assignee: Tianjin Iron and Steel Co Ltd
Priority date: 2008-11-28
Filing date: 2008-11-28
Publication date: 2009-09-02
Anticipated expiration: 2018-11-28

Abstract

The utility model relates to a dustproof sealing device, which comprises a roller mounted on the outer side of a bearing for supporting a main shaft; a bearing cap and an outer end cover are fixedly mounted on the two sides of the roller; a sealing ring is mounted between the inner side of the bearing cap and the wall of the excircle of the main shaft; a sealing cover is mounted on the main shaft on the outer side of the sealing ring; the sealing cover and the bearing cap are tightly fastened; and the dustproof sealing device is characterized in that a dustproof ring is arranged on the outer side of the sealing cover, and the dustproof ring and the main shaft are fixedly mounted. By adopting the structure, the clearance around the main shaft is eliminated; labyrinth structures can be adopted between the dustproof ring and the bearing cap and between the dustproof ring and the sealing cover, so that the length of the clearance is prolonged, and the dust travelling route is extended; in addition, lubricant is applied into the clearance, thereby better achieving the sealing effect. Therefore, the utility model ensures that the service lives of components, such as the main shaft, the bearing and the like, are prolonged; the replacing frequency of the sealing ring is reduced; and the manufacturing cost is lowered, and the production efficiency is improved. In addition, the utility model further has the advantages of simple structure, reasonable design, convenient mounting and dismounting, and the like.

Description

A kind of dust sealing device

Technical field

The utility model belongs to main shaft seal and makes the field, particularly relates to a kind of dust sealing device.

Background technique

At present most of equipment are in the environment of many dust and move in the metallurgy industry, because equipment is bigger, nearly all be exposed in atmosphere and dust, the corrosivity flue dust environment, equipment is subjected to the burn into abrasive wear easily and promptly cavitates like this, therefore it is dustproof to require equipment to note also when guaranteeing normal operation, for example the spring bearing on the equipment transmission main shaft will guarantee that not only it is lubricated, must guarantee to prevent that dust from entering in the bearing.Traditional bearing seal is adopted at the both sides of bearing installation shaft pressure cap; placing seal ring in the bearing gland gets final product; this structure effect under the environment of clean or few dust is more satisfactory; but under many dirt rugged environment; adopt the said structure seal ring will soon be worn and lose sealing effect, therefore need often replacing seal ring, prolonged equipment downtime; reduce manufacturing efficiency, improved cost of production.

Summary of the invention

The utility model provides a kind of working life that prolongs main shaft and bearing for solving the technical problem that exists in the known technology, reduces the replacing frequency of seal ring, reduces production costs the dust sealing device of enhancing productivity.

The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is:

A kind of dust sealing device, the roller that comprises the bearing outside that is installed in supports main shaft, the both sides of roller are fixed with bearing gland and outer end cap, between bearing gland inboard and the main shaft outer circle wall seal ring is installed, on the outside main shaft of seal ring sealing cover is installed, sealing cover and bearing gland are fastening, it is characterized in that: the outside of described sealing cover is provided with dust ring, and dust ring and main shaft install.

The utility model can also adopt following technical measures:

Described dust ring and sealing cover adopt maze-type structure.

Leave the gap between described dust ring and the sealing cover, gap width is 0.5mm-1mm.

Described dust ring can adopt branch half formula structure.

Described dust ring and main shaft adopt fastening piece fastening, and promptly dust ring is provided with tapped hole, equipped jackscrew in the tapped hole.

Advantage and the good effect that the utlity model has are: because the utility model is provided with the dust ring that rotates with main shaft in the outside of sealing cover, eliminated main shaft gap on every side like this, dust ring and bearing gland, can adopt maze-type structure between the sealing cover, prolong the length in gap like this, prolong the dust stroke, be coated with oiling agent in this external gap, better reach sealing effect, therefore the utility model can prolong the working life of parts such as main shaft and bearing, reduce the replacing frequency of seal ring, reduce production costs, enhance productivity, the utility model also has simple in structure in addition, reasonable in design, advantages such as easy installation and removal.

Description of drawings

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

Fig. 2 is a dust ring structural representation among the embodiment 2;

Fig. 3 is the A-A sectional view of Fig. 2.

Among the figure: 1, main shaft; 2, bearing; 3, roller; 4, bearing gland; 5, seal ring; 6, sealing cover; 7, dust ring; 8, jackscrew.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

Embodiment 1, see also Fig. 1, the dust sealing device, comprise the roller 3 in bearing 2 outsides that are installed in supports main shaft 1, the both sides of roller 3 are fixed with bearing gland 4 and outer end cap, between bearing gland 4 inboards and main shaft 1 outer circle wall seal ring 5 are installed, on the outside main shaft of seal ring 5 sealing cover 6 is installed, sealing cover 6 and bearing gland 4 are connected by bolton, are provided with dust ring 7 in the outside of sealing cover 6, and dust ring and sealing cover adopt maze-type structure; Leave the gap between dust ring and the sealing cover, gap width is 0.5mm-1mm, and the present embodiment gap width adopts 0.5mm.Dust ring 7 installs with main shaft 1, and promptly dust ring is provided with tapped hole, equipped jackscrew 8 in the tapped hole.Present embodiment is applicable to the bearing seal on the shorter main shaft.

Embodiment 2: the dust sealing device, the roller 3 that comprises bearing 2 outsides that are installed in supports main shaft 1, the both sides of roller 3 are fixed with bearing gland 4 and outer end cap, between bearing gland 4 inboards and main shaft 1 outer circle wall seal ring 5 is installed, on the outside main shaft of seal ring 5 sealing cover 6 is installed, sealing cover 6 and bearing gland 4 are connected by bolton, be provided with dust ring 7 in the outside of sealing cover 6, dust ring can adopt branch half formula structure, see also Fig. 2 and Fig. 3, the dust ring of halved body is by the bolt handle and be sleeved on the main shaft 1 dust ring and sealing cover employing maze-type structure; Leave the gap between dust ring and the sealing cover, gap width is 0.5mm-1mm, and the present embodiment gap width adopts 1mm.Dust ring 7 installs with main shaft 1, and it is identical with embodiment 1 that dust ring 7 and main shaft 1 install form.Present embodiment is applicable to the bearing seal of longer main shaft.

The utility model has been eliminated main shaft week like this owing to be provided with the dust ring that rotates with main shaft in the outside of seal cover Maze-type structure can be adopted between dust ring and bearing gland, the seal cover in the gap of enclosing, and prolongs like this length in gap, Prolong the dust stroke, be coated with lubricant in this external gap, better reach sealing effectiveness, so the utility model can Prolong the service life of the parts such as main shaft and bearing, reduce the replacement frequency of sealing ring, reduce production costs, improve and produce Efficient, in addition the utility model also have simple in structure, reasonable in design, the advantages such as easy installation and removal.

Claims

1. dust sealing device, the roller that comprises the bearing outside that is installed in supports main shaft, the both sides of roller are fixed with bearing gland and outer end cap, between bearing gland inboard and the main shaft outer circle wall seal ring is installed, on the outside main shaft of seal ring sealing cover is installed, sealing cover and bearing gland are fastening, it is characterized in that: the outside of described sealing cover is provided with dust ring, and dust ring and main shaft install.

2. dust sealing device according to claim 1 is characterized in that: described dust ring and sealing cover adopt maze-type structure.

3. dust sealing device according to claim 1 is characterized in that: leave the gap between described dust ring and the sealing cover, gap width is 0.5mm-1mm.

4. dust sealing device according to claim 1 is characterized in that: described dust ring can adopt branch half formula structure.

5. dust sealing device according to claim 1 is characterized in that: described dust ring and main shaft adopt fastening piece fastening, and promptly dust ring is provided with tapped hole, equipped jackscrew in the tapped hole.