CN204201091U - Two-way floating seal arrangement - Google Patents

Abstract

The utility model provides a kind of two-way floating seal arrangement, at least comprise suit on the rotating shaft and the rotating ring rotated with the axis, and the stationary ring be arranged on equipment, described stationary ring to be enclosed within rotating ring and relatively to rotate between the two, and described stationary ring is made up of the connecting ring of axis and the inner seal ring of radial direction and outer seal ring; Described stationary ring is enclosed within rotating ring, and both mate mutually, inner seal ring, jointly forms shoe cream room between isolating ring A and projection; Isolating ring A, between projection and isolating ring B, jointly form separate cavities; Isolating ring B, jointly between projection and outer seal ring form the dirty chamber of storage; The bottom of shoe cream room is provided with a spill port, and the bottom of storing up dirty chamber is provided with a pollutant exhaust hole.This device automatically can either seal under equipment downtime state, can prevent again the oil leakage in Seal cage, extraneous pollutant can be stoped again to enter Seal cage, its long service life, and applicability is wide simultaneously.

Description

Two-way floating seal arrangement

Technical field

The utility model provides running shaft bearing housing or gear box lubricating oil labyrinth gland in a kind of machinery, belongs to seal arrangement technical field.

Background technique

Labyrinth seal is the belt sealing tooth establishing several to be arranged in order around rotatingshaft, forms a series of gap and expansion cavity of damming between tooth and tooth, and sealed medium produces throttle effect when the gap by tortuous labyrinth and reaches the device of the object of Drain Resistance.Owing to there is gap between the rotor of labyrinth seal and casing, without solid contact, and allowed thermal expansion, therefore adapt to the occasion of high temperature, high pressure, high speed-frequency, this seal form is widely used in steam turbine, gas turbine, compressor, the axle head of blower and the sealing of each inter-stage.

Labyrinth seal in existing market, when normal fuel injection and normal rotation, generally there will not be grease to leak, this is because under rotary state, grease relies on running shaft centrifugal action to be sealed in the oil storage tank in labyrinth completely.But shut down or start process in, often can produce grease and leak, this is because equipment in the running, just can fuel cut-off after must first shutting down, and must first fuel feeding before start.And after a shutdown with start before, because equipment is in halted state, cause rely on centrifugal force realize sealing labyrinth seal then lose sealing function completely, grease flows out from the gap location of stators and rotators.For above-mentioned situation, also there is no any solution in the market, generally can only let alone to leak, so not only create waste, and befouling environment.

In the occasion that some usage requirements are stricter, seal arrangement not only will reach the zero leakage of lubricant oil in Seal cage in use, but also the object preventing extraneous pollutant from entering Seal cage inside will be reached, in addition, also there is higher requirement in working life for Sealing, therefore, provides a kind of sealability very excellent, and the seal arrangement of long perfomance life, becomes related domain problem demanding prompt solution.

Summary of the invention

The utility model provides a kind of two-way floating seal arrangement; solve the deficiency in background technique; this device automatically can either seal under equipment downtime state; the oil leakage in Seal cage can be prevented again; extraneous pollutant can be stoped again to enter Seal cage simultaneously; its long service life, and applicability is wide.

Realizing the technological scheme that the utility model above-mentioned purpose adopts is:

A kind of two-way floating seal arrangement, at least comprise suit on the rotating shaft and the rotating ring rotated with the axis, and the stationary ring be arranged on equipment, described stationary ring is provided with protruding positioning step, described positioning step is positioned at the side with extraneous contact on stationary ring, described stationary ring to be enclosed within rotating ring and relatively to rotate between the two, described stationary ring is made up of the connecting ring of axis and the inner seal ring of radial direction and outer seal ring, wherein inner seal ring is fixed on the side that connecting ring contacts with Seal cage, outer seal ring is fixed on the side with extraneous contact on connecting ring, the outer wall of described connecting ring is along the circumferential direction provided with a circle seal groove, fit sealing circle A is provided with in described seal groove, described stationary ring to be connected with equipment by fit sealing circle A and to fix, sealing, described connecting ring is provided with the isolating ring A of the radial direction towards internal projection, the inwall of described rotating ring is along the circumferential direction provided with a circle seal groove, fit sealing circle B is provided with in described seal groove, rotating ring to be connected with rotatingshaft by fit sealing circle B and to fix, seals, the outer wall of rotating ring being provided with cross section is trapezoidal projection outwardly, the left and right sides of described projection is the skew wall of inclination, and protruding arranged outside has radial isolating ring B,

Described stationary ring is enclosed within rotating ring, and both mate mutually, inner seal ring, jointly forms shoe cream room between isolating ring A and projection; Isolating ring A, between projection and isolating ring B, jointly form separate cavities; Isolating ring B, jointly between projection and outer seal ring form the dirty chamber of storage; Be provided with a floating seal ring in described shoe cream room, described floating seal ring is tightly placed on rotating ring, and its left and right sides contacts with the inwall of inner seal ring and the skew wall of projection respectively; Described storage is provided with a floating seal ring in dirty chamber, and described floating seal ring is tightly placed on rotating ring, and its left and right sides contacts with the skew wall of projection and the inwall of outer seal ring respectively;

The gap leading to shoe cream room of a ring-type is formed between described inner seal ring and rotating ring, the bottom of shoe cream room is provided with a spill port, described spill port is arranged on inner seal ring, lubricant oil in Seal cage enters shoe cream room by above-mentioned gap, then flow to the bottom of shoe cream room under gravity, and flow to Seal cage from spill port; The gap leading to the dirty chamber of storage of a ring-type is formed between described outer seal ring and rotating ring, the bottom of storing up dirty chamber is provided with a pollutant exhaust hole, described pollutant exhaust hole is arranged on outer seal ring, extraneous sewage is by entering the dirty chamber of storage in above-mentioned gap, then the bottom in the dirty chamber of storage is flowed under gravity, and discharged to the external world from pollutant exhaust hole.

Be provided with isolating seal circle in described separate cavities, and be filled with isolation fat.

The two-way floating seal arrangement that the utility model provides has the following advantages: 1, owing to being provided with shoe cream room in this device, is provided with isolating seal circle in described separate cavities, and is filled with isolation fat; Be provided with a floating seal ring in described shoe cream room, described floating seal ring is tightly placed on rotating ring, and its left and right sides contacts with the inwall of inner seal ring and the skew wall of projection respectively; The gap leading to shoe cream room of a ring-type is formed between described inner seal ring and rotating ring, the bottom of shoe cream room is provided with a spill port, described spill port is arranged on inner seal ring, lubricant oil in Seal cage enters shoe cream room by above-mentioned gap, then flow to the bottom of shoe cream room under gravity, and flow to Seal cage from spill port.Therefore when equipment downtime, floating seal ring can be close on rotating ring and inner seal ring, is blocked in gap, prevents lubricant oil from entering shoe cream room.When equipment operation, rotating ring rotates with the axis and stationary ring transfixion, and floating seal ring rotates with the axis, and under the influence of centrifugal force along the skew wall of projection to the certain distance of outer displacement, now floating seal ring does not contact with inner seal ring, thus avoids wearing and tearing, extends working life.Sealing oil now in Seal cage enters shoe cream room from gap, and under the influence of centrifugal force, is thrown toward stationary ring, then flows to again the bottom of shoe cream room under gravity, and flow to Seal cage from spill port.This device runs according to above-mentioned steps, stops sealing oil to be revealed.

2, described storage is provided with a floating seal ring in dirty chamber, and described floating seal ring is tightly placed on rotating ring, and its left and right sides contacts with the inwall of outer seal ring and the skew wall of projection respectively.The gap leading to the dirty chamber of storage of a ring-type is formed between described outer seal ring and rotating ring, the bottom of storing up dirty chamber is provided with a pollutant exhaust hole, described pollutant exhaust hole is arranged on outer seal ring, extraneous sewage is by entering the dirty chamber of storage in above-mentioned gap, then the bottom in the dirty chamber of storage is flowed under gravity, and discharged to the external world from pollutant exhaust hole.When equipment operation, rotating ring rotates with the axis and stationary ring transfixion, and floating seal ring rotates with the axis, and under the influence of centrifugal force along the skew wall of projection to the certain distance of outer displacement, now floating seal ring does not contact with outer seal ring, thus avoids wearing and tearing.Now extraneous sewage enters the dirty chamber of storage from gap, and under the influence of centrifugal force, is thrown toward stationary ring, then flows to the bottom in the dirty chamber of storage under gravity, and discharged to the external world from pollutant exhaust hole.This device runs according to above-mentioned steps, stops extraneous pollutant to enter Seal cage.

3, in the utility model, shoe cream room and store up between dirty chamber and be also provided with separate cavities, is provided with isolating seal circle, and is filled with isolation fat in described separate cavities, shoe cream room and the dirty chamber of storage can thoroughly be kept apart by described separate cavities and isolation fat, guarantee the perfectly safe of sealing effect.

Accompanying drawing explanation

The structural representation of the two-way floating seal arrangement that Fig. 1 provides for the utility model embodiment 1;

In figure: 1-rotating ring, 2-connecting ring, 3-inner seal ring, 4-outer seal ring, 5-fit sealing circle A, 6-isolating ring A, 7-fit sealing circle B, 8-are protruding, 9-isolating ring B, 10-shoe cream room, 11-separate cavities, 12-stores up dirty chamber, 13-isolating seal circle, 14-floating seal ring, 15-spill port, 16-pollutant exhaust hole, 17-positioning step.

Embodiment

Below in conjunction with drawings and the specific embodiments, detailed specific description is done to the utility model, but protection domain of the present utility model is not limited to following examples.

The structure of the two-way floating seal arrangement that the present embodiment provides as shown in Figure 1, comprise suit on the rotating shaft and the rotating ring 1 rotated with the axis, and the stationary ring be arranged on equipment, described stationary ring is provided with protruding positioning step 17, described positioning step 17 is positioned at the side with extraneous contact on stationary ring, and described stationary ring to be enclosed within rotating ring 1 and relatively to rotate between the two.Described stationary ring is made up of the connecting ring 2 of axis and the inner seal ring 3 of radial direction and outer seal ring 4, wherein inner seal ring 3 is fixed on the side that connecting ring 2 contacts with Seal cage, outer seal ring 4 is fixed on the side with extraneous contact on connecting ring 2, the outer wall of described connecting ring 2 is along the circumferential direction provided with a circle seal groove, fit sealing circle A5 is provided with in described seal groove, described stationary ring to be connected with equipment by fit sealing circle A5 and to fix, seals, and described connecting ring 2 is provided with the isolating ring A6 of the radial direction towards internal projection.

The inwall of described rotating ring 1 is along the circumferential direction provided with a circle seal groove, fit sealing circle B7 is provided with in described seal groove, rotating ring 1 to be connected with rotatingshaft by fit sealing circle B7 and to fix, seals, the outer wall of rotating ring 1 being provided with cross section is trapezoidal projection 8 outwardly, the described left and right sides of protruding 8 is the skew wall of inclination, and the arranged outside of protruding 8 has radial isolating ring B9.

Described stationary ring is enclosed within rotating ring, and both mate mutually, inner seal ring, common formation shoe cream room 10 between isolating ring A and projection; Isolating ring A, jointly between projection and isolating ring B form separate cavities 11; Isolating ring B, jointly between projection and outer seal ring form the dirty chamber 12 of storage; Be provided with isolating seal circle 13 in described separate cavities 11, and be filled with isolation fat; Be provided with a floating seal ring 14 in described shoe cream room 10, described floating seal ring 14 is tightly placed on rotating ring 1, and its left and right sides contacts with the inwall of inner seal ring 3 and the skew wall of protruding 8 respectively; Described storage is provided with a floating seal ring 14 in dirty chamber 12, and described floating seal ring 14 is tightly placed on rotating ring 1, and its left and right sides contacts with the protruding skew wall of 8 and the inwall of outer seal ring 4 respectively.

The gap leading to shoe cream room of a ring-type is formed between described inner seal ring 3 and rotating ring 1, the bottom of shoe cream room is provided with a spill port 15, described spill port 15 is arranged on inner seal ring, lubricant oil in Seal cage enters shoe cream room by above-mentioned gap, then flow to the bottom of shoe cream room under gravity, and flow to Seal cage from spill port; The gap leading to the dirty chamber of storage of a ring-type is formed between described outer seal ring 4 and rotating ring 1, the bottom of storing up dirty chamber is provided with a pollutant exhaust hole 16, described pollutant exhaust hole is arranged on outer seal ring 4, extraneous sewage is by entering the dirty chamber of storage in above-mentioned gap, then the bottom in the dirty chamber of storage is flowed under gravity, and discharged to the external world from pollutant exhaust hole.

Claims (2)

1. a two-way floating seal arrangement, at least comprise suit on the rotating shaft and the rotating ring rotated with the axis, and the stationary ring be arranged on equipment, described stationary ring is provided with protruding positioning step, described positioning step is positioned at the side with extraneous contact on stationary ring, described stationary ring to be enclosed within rotating ring and relatively to rotate between the two, it is characterized in that: described stationary ring is made up of the connecting ring of axis and the inner seal ring of radial direction and outer seal ring, wherein inner seal ring is fixed on the side that connecting ring contacts with Seal cage, outer seal ring is fixed on the side with extraneous contact on connecting ring, the outer wall of described connecting ring is along the circumferential direction provided with a circle seal groove, fit sealing circle A is provided with in described seal groove, described stationary ring to be connected with equipment by fit sealing circle A and to fix, sealing, described connecting ring is provided with the isolating ring A of the radial direction towards internal projection, the inwall of described rotating ring is along the circumferential direction provided with a circle seal groove, fit sealing circle B is provided with in described seal groove, rotating ring to be connected with rotatingshaft by fit sealing circle B and to fix, seals, the outer wall of rotating ring being provided with cross section is trapezoidal projection outwardly, the left and right sides of described projection is the skew wall of inclination, and protruding arranged outside has radial isolating ring B,

Described stationary ring is enclosed within rotating ring, and both mate mutually, inner seal ring, jointly forms shoe cream room between isolating ring A and projection; Isolating ring A, between projection and isolating ring B, jointly form separate cavities; Isolating ring B, jointly between projection and outer seal ring form the dirty chamber of storage; Be provided with a floating seal ring in described shoe cream room, described floating seal ring is tightly placed on rotating ring, and its left and right sides contacts with the inwall of inner seal ring and the skew wall of projection respectively; Described storage is provided with a floating seal ring in dirty chamber, and described floating seal ring is tightly placed on rotating ring, and its left and right sides contacts with the skew wall of projection and the inwall of outer seal ring respectively;

The gap leading to shoe cream room of a ring-type is formed between described inner seal ring and rotating ring, the bottom of shoe cream room is provided with a spill port, described spill port is arranged on inner seal ring, lubricant oil in Seal cage enters shoe cream room by above-mentioned gap, then flow to the bottom of shoe cream room under gravity, and flow to Seal cage from spill port; The gap leading to the dirty chamber of storage of a ring-type is formed between described outer seal ring and rotating ring, the bottom of storing up dirty chamber is provided with a pollutant exhaust hole, described pollutant exhaust hole is arranged on outer seal ring, extraneous sewage is by entering the dirty chamber of storage in above-mentioned gap, then the bottom in the dirty chamber of storage is flowed under gravity, and discharged to the external world from pollutant exhaust hole.

2. two-way floating seal arrangement according to claim 1, is characterized in that: be provided with isolating seal circle in described separate cavities, and is filled with isolation fat.