CN2419425Y

CN2419425Y - Dynamic oil retainer ring for external split machanical sealing device for large rotating machine bush

Info

Publication number: CN2419425Y
Application number: CN 00203632
Authority: CN
Inventors: 戴宏亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-04
Filing date: 2000-02-04
Publication date: 2001-02-14
Anticipated expiration: 2010-02-04

Abstract

The utility model discloses a dynamic oil retainer ring for external split mechanical sealing devices for large rotating machine bushes, which is composed of an upper half ring and a lower half ring which are two half ring bodies. The utility model is characterized in that one side of each of the ring bodies of the upper half ring and the lower half ring is cast with a horn-shaped oil retainer rubber ring, both ends of the upper half ring are respectively provided with a bolt hole, a fixing bolt used for connecting the upper and the lower half rings is arranged in the bolt hole, and the upper and the lower half rings are respectively provided with a top wire screw hole. The utility model has the advantages of simple structure, reasonable design, good sealing effect, and rapid and convenient maintenance and installation.

Description

The moving flinger ring of the outer formula bisecting type mechanical seal device of large-scale favourable turn bearing shell

The utility model relates to a kind of rotation shaft seal, the moving flinger ring of the outer formula bisecting type mechanical seal device of particularly a kind of large-scale favourable turn bearing shell.

At present, the sealing means that big-and-middle-sized favourable turn bearing shell mechanical seal device both domestic and external normally adopts dynamic and static flinger ring and end cover to combine, but leave certain axial and radial clearance because moving flinger ring cooperates with notch on the end cover, make the junction point of end cover and rotating shaft that leakage of oil or oil impregnate often take place; In addition, because dynamic and static flinger ring and end cover are steel body spare, when the favourable turn vibration, can cause causing serious friction between the dynamic and static flinger ring and between moving flinger ring and the end cover damaging.

The purpose of this utility model just is to provide a kind of good sealing effect, and can prevent to rub and take place and cause rotating ring---the moving flinger ring of the outer formula bisecting type mechanical seal device of large-scale favourable turn bearing shell of parts damages.

Technical solution of the present utility model is: semi-ring and following semi-ring are formed on two hemizonids that described moving flinger ring is split by middle branch, side on the ring body of last semi-ring and following semi-ring is cast with the retaining factice ring of bell mouth shape, two ends at last semi-ring offer screw respectively, have been provided with the fixing bolt that connects upper and lower semi-ring effect in screw; On last semi-ring and following semi-ring, offer the jackscrew screw respectively.

At the horizontal integration face place of upper and lower semi-ring, last semi-ring is provided with positioning key, is offering the locating slot that matches and act on positioning key on the semi-ring down.

The utility model is reasonable in design, simple in structure, with low cost, it is convenient to install, can with the use that forms a complete set of of static oil retainer ring and end cover, the bearing shell of can guaranteeing to make a connection is oil-proof, oil-tight, good sealing effect, thereby the generation of having avoided making a connection bearing shell case internal cause oil starvation and having caused the serious accident of bearing wear quickening or burn bearing, and can alleviate maintainer's working strength greatly, save a large amount of lubricant oil.

Below in conjunction with accompanying drawing and most preferred embodiment content of the present utility model is further elaborated.

Fig. 1 is that main TV structure of the present utility model partly cuts open schematic representation;

Fig. 2 is a side-looking structural representation of the present utility model;

Fig. 3 is that A-A of the present utility model is to the sectional structure schematic representation.

With reference to accompanying drawing, semi-ring 1 and following semi-ring 2 are formed on two hemizonids that the utility model is split by middle branch, side on the ring body of last semi-ring 1 and following semi-ring 2 is cast with the oil resistant of bell mouth shape, wear-resisting, resistant to elevated temperatures retaining factice ring 3 respectively, two ends at last hemizonid 1 offer screw 4 respectively, the fixing bolt 5 of hexagonal in being provided with in screw 4 is used for upper and lower semi-ring being fastened and making it to be connected to one; On last semi-ring 1 and following semi-ring 2, offer jackscrew screw 6 respectively, be used to install jackscrew and will move flinger ring and be fixed on rotating shaft.Horizontal integration face place at upper and lower semi-ring, last semi-ring 1 is provided with positioning key 7, offering the locating slot 8 that matches and act on positioning key 7 on the semi-ring 2 down, positioning key 7 is that moving flinger ring is being installed with the effect of locating slot 8, when upper and lower two semicircular ring are snapped together, make upper and lower two semicircular ring not misplace in the axial direction and do not go here and there.

The use that forms a complete set of of the utility model and static oil retainer ring and end cover, can prevent make a connection bearing shell leakage of oil or oil impregnate, its principle is as follows: because moving flinger ring is a casting glue bell mouth shape, from the lubricant oil that spills of favourable turn bearing shell when the moving flinger ring rotation, the horn mouth outer wall dispersion shape of lubricant oil from casting glue thrown away, fall in the end cover, lubricant oil is got back in the bearing shell case grease chamber by oil-return groove and spill port in end cover.

Because the radial clearance of moving flinger ring and end cover is 0.25mm～0.50mm when cooperating, so when the favourable turn vibration values is excessive, can cause moving flinger ring and end cover to produce friction diametrically, because moving flinger ring is a casting glue ring, upwards there is certain telescopicing performance in footpath at axle, so can not cause moving flinger ring and end cover badly damaged because of friction produces.

Claims

1, the moving flinger ring of the outer formula bisecting type mechanical seal device of a kind of large-scale favourable turn bearing shell, semi-ring (1) and following semi-ring (2) are formed on two hemizonids that it is split by middle branch, it is characterized in that the side on the ring body of last semi-ring (1) and following semi-ring (2) is cast with the retaining factice ring (3) of bell mouth shape respectively, offer screw (4) respectively at the two ends of last semi-ring (1), in screw (4), be provided with the fixing bolt (5) that connects upper and lower semi-ring effect; On last semi-ring (1) and following semi-ring (2), offer jackscrew screw (6) respectively.

2, the moving flinger ring of the outer formula bisecting type mechanical seal device of large-scale favourable turn bearing shell as claimed in claim 1, it is characterized in that at the horizontal integration face place of semi-ring up and down, last semi-ring (1) is provided with positioning key (7), is offering the locating slot (8) that matches and act on positioning key (7) on the semi-ring (2) down.