CN203476782U

CN203476782U - Centrifugal fan shaft seal structure

Info

Publication number: CN203476782U
Application number: CN201320509911.8U
Authority: CN
Inventors: 钱永清
Original assignee: Suzhou Wuzhong Dalu Electronic Equipment Factory
Current assignee: Suzhou Wuzhong Dalu Electronic Equipment Factory
Priority date: 2013-08-20
Filing date: 2013-08-20
Publication date: 2014-03-12
Anticipated expiration: 2023-08-20

Abstract

The utility model relates to a centrifugal fan shaft seal structure. The centrifugal fan shaft seal structure comprises a shell, a main shaft and a bearing cover matched with the shell, wherein the main shaft is arranged in the shell through a bearing, and the position, matched with the main shaft, in the bearing cover is provided with a spiral groove; the matched portion of the main shaft and the bearing is provided with an oil checking nut; the oil checking end of the oil checking nut stretches out and covers the inner end of the bearing cover; the position, matched with the outside of the bearing cover, of the main shaft is provided with felt; the felt is fixed through a filler pressing cover; due to the fact that the position, matched with the main shaft, in the bearing cover is provided with the spiral groove, part of oil is prevented from flowing out along the main shaft, the oil checking end of the oil checking nut covers the inner end of the bearing cover so that splashed oil liquid can be checked, the felt prevents oil leakage occurring after a centrifugal fan stops rotating, and the filler pressing cover is fixed so that the felt is replaced conveniently. By means of the design, the operation period of the centrifugal fan is prolonged greatly, a seal effect is improved, a large amount of lubricating oil is saved, maintaining quantity is greatly reduced, energy is saved, consumption is reduced, and production efficiency is improved.

Description

A kind of centrifugal blower shaft seal structure

Technical field

The utility model relates to a kind of sealing configuration, is specifically related to a kind of centrifugal blower shaft seal structure.

Background technique

Centrifugal blower is a large class standard equipment of extensive use in industrial production; at present; the shaft seal of centrifugal blower adopts the seal elements such as packing seal or outside framework oil seal mostly; because seal element is fixed on housing, between seal element and main shaft, there is relative movement, so equipment long-time continuous when operation; the easy wear and leakage of seal element; need often to shut down and process, not only labor intensity is large, and has a strong impact on manufacturing efficiency.

Model utility content

The utility model object is the centrifugal blower shaft seal structure that a kind of good sealing effect is provided in order to overcome the deficiencies in the prior art, saves lubricant oil.

For achieving the above object, the technical solution adopted in the utility model is: a kind of centrifugal blower shaft seal structure, comprise housing, by bearing be located at main shaft in this housing, with the bearing cap that this housing coordinates, described bearing cap is inner is provided with spiral chute with main shaft cooperation place; Described main shaft is provided with gear whelk mother with the bearing place of matching; The female gear oil of described gear whelk end is extending type, covers bearing cap the inner; The outside cooperation place of described main shaft and bearing cap is provided with malthoid; Described malthoid is fixed by Gland.

Preferably, described malthoid and main shaft cooperation place are also provided with oil return ditch.

Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:

A kind of centrifugal blower shaft seal structure of the utility model scheme, by and main shaft cooperation place inner at bearing cap, spiral chute is set, prevent that the part oil from flowing out along main shaft, the female gear oil of gear whelk end is extending type, cover bearing cap the inner, make it block the fluid that major part is splashed, avoid fluid to enter seal clearance, the design of malthoid prevents the leakage of oil of blower fan after stall, by Gland, fix the replacing that can facilitate malthoid simultaneously, by above-mentioned design, blower fan is extended service cycle greatly, sealing effect improves, both saved a large amount of lubricant oil, greatly reduced amount of maintenance, play energy-saving and cost-reducing effect, improved again manufacturing efficiency.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:

Accompanying drawing 1 is the structural representation of a kind of centrifugal blower shaft seal structure of the present utility model;

Wherein: 1, housing; 2, bearing; 3, main shaft; 4, bearing cap; 5, thread groove; 6, gear whelk is female; 7, malthoid; 8, Gland.

Embodiment

Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.

Accompanying drawing 1 is a kind of centrifugal blower shaft seal structure described in the utility model, comprise housing 1, by bearing 2, be located at the main shaft 3 in this housing 1, the bearing cap 4 coordinating with this housing 1, described bearing cap 4 is inner is provided with spiral chute 5 with main shaft 3 cooperation places, prevents that the part oil from flowing out along main shaft 3 when main shaft 3 rotates; Described main shaft 3 is provided with gear whelk mother 6 with bearing 2 places of matching, and the female 6 gear oil ends of gear whelk are extending type, cover bearing cap 4 the inners, make it block the fluid that major part is splashed, and avoid fluid to enter seal clearance; Described main shaft 3 is provided with malthoid 7 with the outside cooperation place of bearing cap 4, prevents the leakage of oil of blower fan after stall; Described malthoid 7 is fixing by Gland 8, can facilitate the replacing of malthoid 7 when malthoid 7 wearing and tearing.

In addition, at described malthoid 7, with main shaft 3 cooperation places, oil return ditch is set, can further strengthens sealing effect, improve sealing.

By above-mentioned design, blower fan is extended service cycle greatly, sealing effect improves, and has both saved a large amount of lubricant oil, has greatly reduced amount of maintenance, plays energy-saving and cost-reducing effect, has improved again manufacturing efficiency.

Below be only concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technological scheme of formation, within all dropping on the utility model rights protection scope.

Claims

1. a centrifugal blower shaft seal structure, comprise housing, by bearing be located at main shaft in this housing, with the bearing cap that this housing coordinates, it is characterized in that: described bearing cap is inner is provided with spiral chute with main shaft cooperation place; Described main shaft is provided with gear whelk mother with the bearing place of matching; The female gear oil of described gear whelk end is extending type, covers bearing cap the inner; The outside cooperation place of described main shaft and bearing cap is provided with malthoid; Described malthoid is fixed by Gland.

2. a kind of centrifugal blower shaft seal structure as claimed in claim 1, is characterized in that: described malthoid and main shaft cooperation place are also provided with oil return ditch.