SU1262176A2 - Face sealing - Google Patents

Abstract

1. MECHANICAL SEAL St. No. 873732, characterized in that, in order to increase reliability by improving the centering of the rigid friction ring, the mechanical seal is provided with a washer installed with the possibility of radial mixing relative to the body and the rigid ring between their adjacent ends, and elastic O-rings located between face adjacent surfaces of the washer, the rigid ring and the body, and the directions of the radial movements of the washer relative to the body and the rigid ring are mutually perpendicular, and the washer interacts with the latest inputted through the flanged mechanism. 2. A seal according to claim 1, characterized in that, in order to simplify the construction, one of the elastic O-rings is located on one of the ribs of the washer. Phi2.1

Description

The invention relates to a sealing technique, can be used to seal rotating shafts, and is a refinement of the known device according to ed. St. No. 873732.

The purpose of the invention is to increase the reliability of compaction by providing compensation for radial shaft beats and misalignment of the shaft and housing in any of the planes, as well as simplifying the design.

Figure 1 presents the mechanical seal, a longitudinal section; figure 2 is a view of And figure 1; FIG. 3 shows the structure with the placement of an O-ring on the outer edge of the clamp, an option; figure 4 - placement of the O-shaped ring on the inner edge of the washer, option; figure 5 - placement of the washer outside the liquid, option.

The shaft is equipped with a spring-loaded axially movable sleeve 1 with a gland packing ring 2 placed in its nest. The holder 1 is pressed against the rigid ring 3 partially entering the socket. The hard ring 3 has two radial grooves 4 located in the diametral plane that have a small clearance t leads 5 washers 6. For a lead 7 washers 6 are located perpendicular to the plane of the leads 5 diameters W

ral plane. The drivers 7 fit into the corresponding radial grooves 8 of the housing 9. The sealing of the ends of the rigid counter ring 3, the washer 6 and the body 9 is provided with elastic 0-shaped rings 10 (FIG. 1) or by placing an O-shaped elastic ring 11 on the outer edge 12 of the washer 6 (Fig. 3) in the event of overpressure or slight vacuum before compaction. With a significant vacuum, the elastic O-ring 13 is placed on the inner edge 14 of the washer 6 (Fig. 4). For ease of installation, the rib can be made with a groove 15. It is also possible to connect the washer 6 with the external end of the body (figure 5).

When the seal operates under the action of radial loads by moving relative to the body in mutually perpendicular planes of the washer 6 and the rigid ring 3, the rigid ring 3 is reliably centered without generating large radial forces. By selecting a diameter on which the O-rings 10, 11, or 13 are placed, the ease of radial mixing of the rigid response ring 3 is additionally provided.

fig .:

FIG. four

FIG. five

Claims (2)

1. FACE SEAL by ed. St. No. 873732, characterized in that, in order to increase reliability by improving the centering of the rigid friction ring, the mechanical seal is equipped with a washer mounted with the possibility of radial movement relative to the housing and the rigid ring between their adjacent ends, and elastic O-shaped rings located between the end rings adjacent surfaces of the washer, the rigid ring and the housing, and the directions of radial movement of the washer relative to the housing and the rigid ring are mutually perpendicular, and the washer interacts with after days by means of the introduced driving mechanism. 2. Seal by π. 1, characterized in that, in order to simplify the design, one of the elastic O-rings is located on one of the ribs of the washer. SU ,, „1262176 φυζ.ί