CN203641514U

CN203641514U - Rotating shaft sealing device

Info

Publication number: CN203641514U
Application number: CN201320847959.XU
Authority: CN
Inventors: 祁博渊; 仝庆
Original assignee: MAANSHAN RONGYI SEALING MATERIAL CO Ltd
Current assignee: MAANSHAN RONGYI SEALING MATERIAL CO Ltd
Priority date: 2013-12-19
Filing date: 2013-12-19
Publication date: 2014-06-11
Anticipated expiration: 2023-12-19

Abstract

The utility model discloses a rotating shaft sealing device. The sealing device comprises a rotating shaft; the bottom end of the rotating shaft is sleeved in a split type support ring; V-type sealing fillers are arranged on the split type support ring; a press cover with a press ring sleeves the outer side of the rotating shaft on the V-type sealing fillers; a split type moving ring 1 sleeves the press cover; the dissection face of the split type moving ring 1 and the contact face of the split type moving ring 1 and the rotating shaft are coated with sealant, and a screw bolt 1 is used for allowing the split type moving ring 1 to be fixed on and rotate with the rotating shaft; a split type sealing housing is arranged on the outer side of the rotating shaft on the press cover; upper and lower ends of the split type sealing housing separately bend outwards; and the lower end of the split type sealing housing is fixedly connected with the press cover via a bolt 2. According to the utility model, original sealing fillers are replaced by the V-type sealing fillers, so contact abrasion between the sealing fillers and the rotating shaft is reduced, the sealing performance is more effective and will not be reduced even the shaft is in an eccentric state, and the sealing device operates stably and reliably and is long in service lifetime.

Description

A kind of sealing device for rotary shaft

Technical field

The utility model relates to shaft sealing technical field, relates in particular to a kind of sealing device for rotary shaft.

Background technique

Running shaft is extensively present in various transmittance processs, as automatic door in the stirrer in chemical reaction still (in petrochemical industry, metallurgy, electrical production) water pump, blower fan, fluid line etc.

Traditional seal form has two kinds, and one is packing seal; Another kind of is mechanical seal.

Material filling type sealing is main to be passed through at the additional sleeve pipe of rotating shaft, forming Seal cage graphite packing (or asbestos, tetrafluoro etc.) is pressed in Seal cage, to reach sealing effect, but due to earthfill rockfill concrete riprap RCC elastic properties of materials is little and axle between friction can produce gap, bias to axle is uncompensated, leak thereby produce, polluted environment, affect equipment safety operation.Mechanical seal installation and maintenance trouble, and be not suitable with high temperature (more than 350 degree) environment, use and have narrow limitation.

Model utility content

The utility model object is exactly the defect in order to make up prior art, and a kind of sealing device for rotary shaft is provided.

The utility model is achieved through the following technical solutions:

A kind of sealing device for rotary shaft, include running shaft, in the bottom of running shaft, cover has split type supporting ring, V-seal filler is housed above split type supporting ring, above V-seal filler, the outside of running shaft cover has the gland with pressure ring, on gland, square set has split type rotating ring one, coat sealer and make the fixing rotation of split type rotating ring one and running shaft by screwing bolt one at the split surface of split type rotating ring one with running shaft surface of contact, above gland, running shaft outside is provided with split type can, the outside bending respectively of the upper and lower end of described split type can, the lower end of split type can is fixedly connected with gland by bolt two, between split type rotating ring one and split type can, leave cavity, on split type can, have through hole interface, if when sealing medium is high-temperature gas, can be in cavity, pass into cold wind circulation temperature lowering by through hole interface, when adjustment cold wind pressure is slightly larger than the pressure of sealing medium, also there is seal action simultaneously, in the time that sealing medium is poisonous or flammable and explosive substance, can be in cavity, pass into inert medium and ensure safety in production.At the top of running shaft, cover has split type rotating ring two, coat sealer and make the fixing rotation of split type rotating ring two and running shaft by screwing bolt three at the split surface of split type rotating ring two with running shaft surface of contact, between split type rotating ring one and split type rotating ring two, be provided with annular sealing member one, the intermediate portion outwardly convex of annular sealing member one, the upper and lower end of annular sealing member one is respectively equipped with the flanging of outside bending, distance between described split type rotating ring one and split type rotating ring two equals 90% of annular sealing member one height, between the flanging of annular sealing member one upper and lower end, be placed with annular sealing member two, spring is equipped with in inside at annular sealing member two, outer side surface at annular sealing member two is provided with boss, above boss, be placed with metal flange, metal flange, the upper end of boss and split type can is fixedly connected with by bolt four, after V-seal filler lost efficacy, between split type rotating ring one and split type rotating ring two, annular sealing member one, forming the end face seal of two places seals again, and with spring pressurization self compensation, split type rotating ring one is with split type rotating ring two with running shaft rotation, and annular sealing member one and annular sealing member two are static.

Between described gland and split type can, scribble sealer.

The utility model has the advantages that: it is V-seal that the utility model changes former packing seal, reduce and running shaft contact wear, sealability is more effective, and axle, under eccentric state, can not reduce sealing effect, and working stability is reliable, long service life.

Accompanying drawing explanation

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

Embodiment

As shown in Figure 1, a kind of sealing device for rotary shaft, include running shaft 13, in the bottom of running shaft 13, cover has split type supporting ring 1, V-seal filler 2 is housed above split type supporting ring 1, above V-seal filler 2, the outside of running shaft 13 cover has the gland 3 with pressure ring, on gland 3, square set has split type rotating ring 1, coat sealer and make split type rotating ring 1 and the fixing rotation of running shaft 13 by screwing bolt 1 at the split surface of split type rotating ring 1 with running shaft 13 surface of contact, above gland 3, running shaft 13 outsides are provided with split type can 4, the outside bending respectively of the upper and lower end of described split type can 4, the lower end of split type can 4 is fixedly connected with gland 3 by bolt 28, between split type rotating ring 1 and split type can 4, leave cavity 15, on split type can 4, have through hole interface 5, if when sealing medium is high-temperature gas, can be in cavity 15, pass into cold wind circulation temperature lowering by through hole interface 5, when adjustment cold wind pressure is slightly larger than the pressure of sealing medium, also there is seal action simultaneously, in the time that sealing medium is poisonous or flammable and explosive substance, can, in cavity 15, pass into inert medium and ensure safety in production.At the top of running shaft 13, cover has split type rotating ring 2 12, coat sealer and make split type rotating ring 2 12 and the fixing rotation of running shaft 13 by screwing bolt 3 17 at the split surface of split type rotating ring 2 12 with running shaft 13 surface of contact, between split type rotating ring 1 and split type rotating ring 2 12, be provided with annular sealing member 1, the intermediate portion outwardly convex of annular sealing member 1, the upper and lower end of annular sealing member 1 is respectively equipped with the flanging of outside bending, distance between described split type rotating ring 1 and split type rotating ring 2 12 equals 90% of annular sealing member one 11 height, between the flanging of annular sealing member one 11 upper and lower end, be placed with annular sealing member 29, in the inside of annular sealing member 29, spring 10 is housed, be provided with boss 18 at the outer side surface of annular sealing member 29, above boss 18, be placed with metal flange 7, metal flange 7, the upper end of boss 18 and split type can 4 is fixedly connected with by bolt 4 14, after V-seal filler 2 lost efficacy, between split type rotating ring 1 and split type rotating ring 2 12, annular sealing member 1, forming the end face seal of two places seals again, and with spring 10 self compensation of pressurizeing, split type rotating ring 1 rotates with running shaft 13 with split type rotating ring 2 12, and annular sealing member 1 and annular sealing member 29 are static.

Between described gland 3 and split type can 4, scribble sealer.

Claims

1. a sealing device for rotary shaft, it is characterized in that: include running shaft, in the bottom of running shaft, cover has split type supporting ring, V-seal filler is housed above split type supporting ring, above V-seal filler, the outside of running shaft cover has the gland with pressure ring, on gland, square set has split type rotating ring one, coat sealer and make the fixing rotation of split type rotating ring one and running shaft by screwing bolt one at the split surface of split type rotating ring one with running shaft surface of contact, above gland, running shaft outside is provided with split type can, the outside bending respectively of the upper and lower end of described split type can, the lower end of split type can is fixedly connected with gland by bolt two, between split type rotating ring one and split type can, leave cavity, on split type can, have through hole interface, at the top of running shaft, cover has split type rotating ring two, coat sealer and make the fixing rotation of split type rotating ring two and running shaft by screwing bolt three at the split surface of split type rotating ring two with running shaft surface of contact, between split type rotating ring one and split type rotating ring two, be provided with annular sealing member one, the intermediate portion outwardly convex of annular sealing member one, the upper and lower end of annular sealing member one is respectively equipped with the flanging of outside bending, distance between described split type rotating ring one and split type rotating ring two equals 90% of annular sealing member one height, between the flanging of annular sealing member one upper and lower end, be placed with annular sealing member two, spring is equipped with in inside at annular sealing member two, outer side surface at annular sealing member two is provided with boss, above boss, be placed with metal flange, metal flange, the upper end of boss and split type can is fixedly connected with by bolt four.

2. a kind of sealing device for rotary shaft according to claim 1, is characterized in that: between described gland and split type can, scribble sealer.