CN2550571Y

CN2550571Y - Leakless rotary machine sealing device

Info

Publication number: CN2550571Y
Application number: CN 02238906
Authority: CN
Inventors: 高爱文
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-08
Filing date: 2002-06-08
Publication date: 2003-05-14
Anticipated expiration: 2012-06-08

Abstract

The utility model relates to a rotary mechanical sealing device without leakage for flow of harmful medium and inflammable and explosive medium, which solves the problem of leakage caused by non-compact sealing. The utility model is characterized in that: a plurality of gong character shaped heat sinks (7) are clamped in the silica gel material sealing rings (6) on the boss of the end cover (9), then the end cover (9) is sleeved into the shaft sleeve (5) and fixed on the connector (4) by screw thread of a plurality of bolts (3) through the sealing rings (6) and the heat sink (7), and then the sealing ring (6) is covered by the seal sleeve (2) to enable the outer edge surface of the sealing ring (6) to be contacted with the seal sleeve (2) wall. The utility model has the advantages that the leakage is avoided; the drip and leak phenomenon is eliminated thoroughly, so that the leakage phenomenon can not appear. The utility model can be used in particular to all the mechanical rotary parts which require to be sealed.

Description

Ne-leakage rotary machine seal arrangement

Technical field:

The utility model relates to a kind of seal arrangement, is particularly suitable for the ne-leakage rotary machine seal arrangement of hazardous medium, inflammable and explosive media flow.

Background technique:

Existing mechanical sealing generally is that the end face by a rotating ring and a stationary ring contact and forms sealing, and the rubbing surface that its end face is formed by graphite and alloy weeping occurs easily when rotation, generally be 15 droplets/minute; Moreover graphite progressively turns to a large amount of leakage phenomenons along with long use is worn and torn easily by weeping, and particularly the consequence that causes in the leakage process of fluid class hazardous medium, inflammable and explosive medium is very fearful.For the hazardous medium of air kind, inflammable and explosive medium water clock appears or leakage phenomenon is more general and serious.

The model utility content:

The purpose of this utility model is to overcome above-mentioned deficiency and provide a kind of and seal tight and avoid the ne-leakage rotary machine seal arrangement of seepage phenomenon.

The technological scheme that the utility model adopted is: this ne-leakage rotary machine seal arrangement, form by housing and with the stuffing box gland of housing one, axle sleeve and with the connecting body of axle sleeve one, sitting on the boss of the circular hollow end cap of convex has some silica gel material seal ring clampings " worker " font radiating fin to make the seal ring both sides that cavity be arranged, and end cap is inserted in behind the axle sleeve and passes seal ring and radiating fin screw thread with some bolts and be fixed on and make seal ring outer face touch the sealing jacket wall mutually on the connecting body afterwards.

Above-mentioned seal ring is 4, and bolt is 6.

The utility model beneficial effect compared with the prior art is: owing to sit on the end cap boss of sealing device some softnesses are arranged, flexible silica gel material seal ring clamping " worker " font radiating fin, making has cavity in the seal ring both sides, silica gel material magnitude of interference can be stored in the cavity, in the axle sleeve rotary course, seal ring expands outwardly with rotation, sealing is tight, avoided seepage, thoroughly stop weeping, more leakage phenomenon can not appear, at medicine, chemical industry, industries such as food processing are used this device, guarantee the Security of inflammable and explosive and hazardous medium, non-environmental-pollution; Suitable all mechanical rotation needs seal the position and all can use.

Description of drawings:

Fig. 1 is that structure of the present utility model is not intended to;

Fig. 2 is the A portion partial enlarged drawing of Fig. 1.

The 1-housing, 2-stuffing box gland, 3-bolt, 4-connecting body, 5-axle sleeve, 6-seal ring, 7-radiating fin, 8-cavity, 9-end cap.

Embodiment:

Below in conjunction with accompanying drawing the utility model is further described:

In conjunction with shown in Figure 2, this ne-leakage rotary machine seal arrangement is made up of housing 1 and axle sleeve 5 as Fig. 1, and housing 1 is an one with stuffing box gland 2, and axle sleeve 5 also is an one with connecting body 4, and axle sleeve 5 drives connecting body 4 and rotates together.End cap 9 is hollow (abbreviation hollow) for convex is circular and middle, and sitting on the boss of end cap 9 has 4 silica gel material seal ring 6 clampings " worker " font radiating fin 7 to make seal ring 6 both sides have cavity 8 to be used to store the magnitude of interference of the seal ring 6 of silica gel material; End cap 9 is inserted in that seal ring 6 is passed with 6 bolts 3 in axle sleeve 5 back and radiating fin 7 screw threads are fixed on the connecting body 4 afterwards, then stuffing box gland 2 is covered seal ring 6 and makes seal ring 6 outer faces touch stuffing box gland 2 walls mutually.For to be full of the cavity of the cooling liquid that circulates and to have import and export up and down at housing 1, for the turnover of the cooling liquid in the housing 1, axle sleeve 5 switches through moving axis in the housing 1.Gap location at axle sleeve 5 and stuffing box gland 2 can supply coolant flow.

While actually employed, when axle sleeve 5 drives connecting body 4 rotations, because seal ring 6 is soft silica gel material, certain resilient flexible is arranged, the seal ring 6 that is stored in magnitude of interference in the cavity 8 when high speed rotating expands outwardly, and makes that the medium in the pump is blocked in the pump, can not leak in the housing 1, thoroughly stop the seepage phenomenon, can guarantee personal safety and stop environmental pollution.No matter under kelvin temperature 0～800 degree Kelvin, still the sealing of any flowable media below pressure 40Pma all can be used this device, good sealing effect, and adaptability is strong.

When maintain and replace seal ring 6, only need bolt 3 is unloaded and can take down end cap 9, carry out repair and replacement then, very convenient.

Claims

1, a kind of ne-leakage rotary machine seal arrangement, by housing (1) and with the stuffing box gland (2) of housing (1) one, axle sleeve (5) reaches with the connecting body (4) of axle sleeve (5) one to be formed, it is characterized in that: sitting on the boss of the circular hollow end cap of convex (9) has some silica gel material seal rings (6) clampings " worker " font radiating fin (7) to make seal ring (6) both sides that cavity (8) be arranged, end cap (9) is inserted in that seal ring (6) is passed with some bolts (3) in axle sleeve (5) back and radiating fin (7) screw thread is fixed on the connecting body (4) afterwards, uses stuffing box gland (2) to cover seal ring (6) then and makes seal ring (6) outer face touch stuffing box gland (2) wall mutually.

2, ne-leakage rotary machine seal arrangement according to claim 1, it is characterized in that: seal ring (6) is 4.

3, ne-leakage rotary machine seal arrangement according to claim 1, it is characterized in that: bolt (3) is 6.