CN202520950U

CN202520950U - Bidirectional sealer for shaft

Info

Publication number: CN202520950U
Application number: CN2012201659597U
Authority: CN
Inventors: 许翊像
Original assignee: China MCC17 Group Co Ltd
Current assignee: China MCC17 Group Co Ltd
Priority date: 2012-04-19
Filing date: 2012-04-19
Publication date: 2012-11-07
Anticipated expiration: 2022-04-19

Abstract

The utility model provides a bidirectional sealer for a shaft, which belongs to sealers. The bidirectional sealer is characterized by mainly comprising a right framework, a right seal ring, a contraction spring ring, a shaft protecting sleeve, a support ring, an anti-slip layer, a left seal ring, a left framework and an oil layer, wherein stepped holes on both the right-end segment of the left framework and the left-end segment of the right framework are adhesively embedded and assembled into a whole correspondingly; the left seal ring is adhesively embedded into an inner chamber of the left framework, and the inner ring of the left seal ring becomes an acute triangular right pointed lip; the right seal ring is adhesively embedded into the inner chamber of the right framework, and the inner ring of the right seal ring becomes an acute triangular left pointed lip; the support ring of which the one-side cross section is circular arc-shaped is mounted on the external inclined peripheral surfaces of the left and the right pointed lips; the contraction spring ring is sleeved on the concave circumferential surface of the support ring; the oil layer is filled into a cavity surrounded by the left and the right seal rings and the support ring; the shaft protecting sleeve penetrates the central shaft holes of both the left and the right frameworks; and the ring-shaped anti-slip layer is embedded into the middle segment of the inner circumferential surface of the shaft protecting sleeve. The bidirectional sealer has the advantages of good leak tightness and long service life.

Description

Axle is used the two way sealed device

Technical field

The utility model belongs to sealer, especially relates to a kind of two way sealed device.

Technical background

On the rotatingshaft of existing engineering machinery oil sealing being housed mostly leaks to prevent lubricant oil; Though these oil sealing structures are different to stoping fluid to leak and protecting axle and play a certain function; But existing oil sealing is often unsatisfactory when using, and has a lot of shortcomings: the machinery of 1, working under water can be because of water inlet easily in the effect of water pressure body, and the performance of lubricant oil is destroyed and causes shorten mechanical working life; 2, between the conjuncted driving axle box because of the different easily intercommunications of left and right sides fluid with pressure; Cause the bad mechanical failure of lubrication effect, 3, survey mechanically because of damaging easily on the surface of insufficient lubrication axle, 4, often need offer the oil sealing base hole in that the oil sealing place is installed at brill; Make processed complex, cost high, 5, the oil sealing installation, maintenance difficulty and the working life that have is short.

Summary of the invention

The purpose of the utility model is to propose a kind of to use the two way sealed device, and not only rational in infrastructure, installation, maintenance is convenient, using scope is wide, and has self-aligning effect, good airproof performance, long service life.

The purpose of the utility model realizes like this; Use the two way sealed device for a kind of, its spy

Levy and be: this axle is used the two way sealed device; Mainly form by right skeleton, right seal ring, contraction spring circle, protective shaft sleeve, filler ring, skid resistant course, left seal ring, left skeleton and oil layer; This left skeleton is the circular basin body of band central shaft hole; Its right-hand member section is the little step section of outer diameter, and this right skeleton also for the circular basin body of band central shaft hole, is offered the big step hole of inner diameter in its left end section; And the chimeric one that is assembled into of the corresponding band of step hole glue of the right-hand member section of this left skeleton (step section) and the left end section of right skeleton; The left seal ring of band glue setting-in ring in the inner chamber of left skeleton, this left seal ring can be processed with rubber, offers the groove surface of annular in the middle and lower part of the right part of this left seal ring; And the inner ring that makes left seal ring becomes towards the sharp lip in the sharp leg-of-mutton right side that lower right part is tiltedly stretched; Same in the inner chamber of right skeleton right seal ring, the also available rubber of this right seal ring of band glue setting-in ring process, offer the groove surface of annular in the middle and lower part of the left part of this right seal ring, and the inner ring of right seal ring become towards the sharp lip in a sharp leg-of-mutton left side that lower left quarter is tiltedly stretched; The adjacent anchor ring of this left and right seal ring is against driving fit, and the internal diameter of this left and right sharp lip is identical and all less than the aperture of the central shaft hole on the left and right skeleton; The monolateral cross section that on the outer oblique side face of left and right sharp lip, is slidingly installed is the filler ring of circular arc; Suit contraction spring circle on the recessed circumferential surface of this filler ring; The outer oblique side face (go up oblique side face) that makes left and right sharp lip is tangent line with the inner peripheral surface of filler ring and leans, and fills oil layer in the cavity that between left and right seal ring and filler ring, surrounds, and this oil layer can be lubricating grease; In the central shaft hole of left and right skeleton, install the stepped shape protective shaft sleeve with diameter; The right part or the left part that are this protective shaft sleeve have flanged lip, and the outer circumferential face of this protective shaft sleeve left side section leans with the tip of left and right sharp lip, offer groove surface and the annular skid resistant course of corresponding setting-in in the stage casing of the inner peripheral surface of protective shaft sleeve; The internal diameter and the rotating shaft of this skid resistant course are interference fit, and this skid resistant course can be processed with nylon.

Be fastened on when turning round in the rotating shaft when the protective shaft sleeve that has skid resistant course like this; If this with the pressure on the left side of two way sealed device greater than the right; At this moment the pressure on the left side acts on the lubricating grease that left seal ring drives in (pushing tow) inner chamber left sharp lip and protective shaft sleeve on the right seal ring is close to more; Prevent that the left side fluid from flowing into the right; If greater than the left side, at this moment the pressure on the right acts on the lubricating grease that right seal ring drives in (pushing tow) inner chamber right sharp lip and protective shaft sleeve on the left seal ring is close to more, prevents the fluid inflow left side, the right with the pressure on two way sealed device the right for this.

This reality has the novel axle that proposes to use the two way sealed device, and is rational in infrastructure, safe and reliable, easy for installation, long service life, and leakage efficiency is high.

Combine accompanying drawing and embodiment that the axle that the utility model proposed is described further with the two way sealed device at present.

Description of drawings

Fig. 1 is the main cross-sectional schematic with the two way sealed device that the utility model proposes.

Among Fig. 1: 1, right skeleton 2, right seal ring 3, contraction spring circle 4, protective shaft sleeve 5, filler ring 6 skid resistant courses 7, left seal ring 8, left skeleton 9, oil layer.

Embodiment

As can be seen from Figure 1: use the two way sealed device, it is characterized in that for a kind of: this axle is with two

To sealer; Mainly form by right skeleton 1, right seal ring 2, contraction spring circle 3, protective shaft sleeve 4, filler ring 5, skid resistant course 6, left seal ring 7, left skeleton 8 and oil layer 9; This left skeleton 8 is the circular basin body of band central shaft hole; Its right-hand member section is the little step section of outer diameter, and this right skeleton 1 also for the circular basin body of band central shaft hole, is offered the big step hole of inner diameter in its left end section; And the chimeric one that is assembled into of the corresponding band of step hole glue of the right-hand member section of this left skeleton 8 (step section) and right skeleton 1 left end section; The left seal ring 7 of band glue setting-in ring in the inner chamber of left skeleton 8, this left seal ring 7 can be processed with rubber, offers the groove surface of annular in the middle and lower part of the right part of this left seal ring 7; And the inner ring that makes left seal ring 7 becomes towards the sharp lip in the sharp leg-of-mutton right side that lower right part is tiltedly stretched; Same in the inner chamber of right skeleton 1 the also available rubber of right seal ring 2 these right seal rings 2 of band glue setting-in ring process, offer the groove surface of annular in the middle and lower part of the left part of this right seal ring 2, and the inner ring of right seal ring 2 become towards the sharp lip in a sharp leg-of-mutton left side that lower left quarter is tiltedly stretched; The adjacent anchor ring of this left and right seal ring 7,2 is against driving fit, and the internal diameter of this left and right sharp lip is identical and all less than the aperture of the central shaft hole on the left and right skeleton 8,1; The monolateral cross section that on the outer oblique side face of left and right sharp lip, is slidingly installed is the filler ring 5 of circular arc; Suit contraction spring circle 3 on the recessed circumferential surface of this filler ring 5; The outer oblique side face (promptly going up oblique side face) that makes left and right sharp lip is tangent line with the inner peripheral surface of filler ring 5 and leans, filling oil layer 9 in the cavity that between left and right seal ring 7,2 and filler ring 5, surrounds, and this oil layer 9 can be lubricating grease; In left and right skeleton 8,1 central shaft hole, install stepped shape protective shaft sleeve 4 with diameter; The right part or the left part that are this protective shaft sleeve 4 have flanged lip, and the outer circumferential face of this protective shaft sleeve 4 left side sections leans with the tip of left and right sharp lip, offer groove surface and the annular skid resistant course 6 of corresponding setting-in in the stage casing of the inner peripheral surface of protective shaft sleeve 4; The internal diameter and the rotating shaft of this skid resistant course 6 are interference fit, and this skid resistant course 6 can be processed with nylon.

Like this; When the protective shaft sleeve that has skid resistant course 64 is fastened on when turning round in the rotating shaft; If this with the pressure on the left side of two way sealed device greater than the right; At this moment the pressure on the left side acts on the lubricating grease that left seal ring 7 drives in (pushing tow) inner chambers left sharp lip and protective shaft sleeve 4 on the right seal ring 2 is close to more, prevents that the left side fluid from flowing into the right, if this pressure on the right of the two way sealed device is greater than the left side; At this moment the lubricating grease that the pressure on the right of acts in right seal ring 2 driving (pushing tow) inner chambers is close to right sharp lip and protective shaft sleeve 4 on the left seal ring 7 more, prevents that the right fluid from flowing into the left side.

Claims

1. an axle is used the two way sealed device; It is characterized in that: this axle is used the two way sealed device; Mainly form by right skeleton (1), right seal ring (2), contraction spring circle (3), protective shaft sleeve (4), filler ring (5), skid resistant course (6), left seal ring (7), left skeleton (8) and oil layer (9); This left skeleton (8) is the circular basin body of band central shaft hole; Its right-hand member section is the little step section of outer diameter; This right skeleton (1) also for the circular basin body of band central shaft hole, is offered the big step hole of inner diameter in its left end section, and the chimeric one that is assembled into of the corresponding band of step hole glue of the right-hand member section of this left skeleton (8) and right skeleton (1) left end section; The left seal ring (7) of band glue setting-in ring in the inner chamber of left skeleton (8); Offer the groove surface of annular in the middle and lower part of the right part of this left seal ring (7), and the inner ring of left seal ring (7) is become towards the sharp lip in the sharp leg-of-mutton right side that lower right part is tiltedly stretched, equally the right seal ring (2) of band glue setting-in ring in the inner chamber of right skeleton (1); Offer the groove surface of annular in the middle and lower part of the left part of this right seal ring (2); And the inner ring that makes right seal ring (2) becomes towards the sharp lip in a sharp leg-of-mutton left side that lower left quarter is tiltedly stretched, and the adjacent anchor ring of this left and right seal ring (7,2) is against driving fit, and the internal diameter of this left and right sharp lip is identical and all less than the aperture of the central shaft hole on the left and right skeleton (8,1); The monolateral cross section that on the outer oblique side face of left and right sharp lip, is slidingly installed is the filler ring (5) of circular arc; Suit contraction spring circle (3) on the recessed circumferential surface of this filler ring (5); Making the inner peripheral surface of outer oblique side face and the filler ring (5) of left and right sharp lip be tangent line leans; Fill oil layer (9) in the cavity that between left and right seal ring (7,2) and filler ring (5), surrounds; In the central shaft hole of left and right skeleton (8,1) with diameter, install stepped shape protective shaft sleeve (4), promptly the right part or the left part of this protective shaft sleeve (4) have flanged lip, and the outer circumferential face of this protective shaft sleeve (4) left side section and the tip of left and right sharp lip lean; Offer groove surface and corresponding setting-in annular skid resistant course (6) in the stage casing of the inner peripheral surface of protective shaft sleeve (4), the internal diameter and the rotating shaft of this skid resistant course (6) are interference fit.

2. axle according to claim 1 is used the two way sealed device, it is characterized in that this left seal ring (7) processes with rubber.

3. axle according to claim 1 is used the two way sealed device, it is characterized in that this right seal ring (2) processes with rubber.

4. axle according to claim 1 is used the two way sealed device, it is characterized in that this oil layer (9) is a lubricating grease.

5. axle according to claim 1 is used the two way sealed device, it is characterized in that this skid resistant course (6) processes with nylon.