SU1303782A1 - End face seal - Google Patents

Abstract

The invention relates to mechanical engineering, namely to mechanical seals of rotating shafts of pumps and other machines. The purpose of the invention is to simplify the design of the seal by changing the mechanism for fastening the rings of a friction pair in cages. On the outer cylindrical surface of the friction rings 3, 4, transverse grooves 7, which are aligned with the longitudinal grooves 8 in the cages I, 2, are extruded. The grooves enter U-shaped brackets 9, held from falling out of the retaining rings 10, worn on the clip. The hinged rings 10 are kept from axial displacement in one direction by an emphasis in the collar II, and in the other by an emphasis of the bent elastic petal in an annular groove made on the rings 3, 4 friction. Brackets-clamps 9 form together with the banding rings 10 enclosing them a fastener lock. 4 il. e (L 9.0. 11 S 8 15 L 00 O 00 vl

Description

The invention relates to sealing technology, in particular, to mechanical seals in pairs of shaft shafts and can be used in pumps and other machines.

The purpose of the invention is to simplify the design of the seal by changing the mechanism for fastening the friction rings in the clips.

FIG. 1 shows the mechanical seal, cut; in fig. 2 is a section A-A in FIG. one; FIG. 3 is a section BB in FIG. 2; in fig. 4 is a view of B in FIG. 3

The mechanical seal consists of rotating 1 and axially movable 2 clips, in which rings 3 and 4 friction are mounted, supported on secondary sealing rings 5 and 6 from elastic material, for example rubber.

On the outer cylindrical surface of the rings 3 ,. 4 frictions are made transverse grooves 7, aligned with the longitudinal grooves 8 in the cage 1,2 "Grooves 7 and 8 enter U-shaped clamps-clamps 9 and are kept from falling out by retaining rings 10. The retaining rings are kept from axial displacement in one direction by an emphasis into the collar 11 and into the other with the abutment of the bent elastic petal 12 into the edge of the annular groove 13. The locking pins enter heads 14 into transverse grooves 7, and golovkash 15 covers the back side sleeves 1,2c,

Mechanical seal works as follows.

To assemble the assembly into the cages 1 and 2, rings 3, 4 friction are installed.

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and after crimping the sealing rings 5, 6 are fixed by inserting the retainers into the holes 7, 8 on the clips so that the heads 14 fit into the grooves of the 7 rings

friction, and heads 15 covered

clip from the back. The knot is fastened by putting the retaining ring 10 on the cage until it stops at the collar P, at which time the petal 12 bends inwards and cuts along the cage and when combined with the groove 13 with a click enters it, the retaining retaining ring 10 stops.

To disassemble the knot, the petal 12 is lifted with the help of the notch 16 until it leaves the groove 13e, after which the retaining ring is removed and the latches are removed. Clamps

hold the rings 3 ,, 4 friction in the cages 1, 2 and transmit the torque by the heads 14.

Claims (1)

Invention Formula A mechanical seal containing rotating and non-rotating friction rings mounted in cages and secured with retainers, so that, in order to simplify the design, the cages are provided with a retaining ring and transverse grooves are made on the outer cylindrical surface of the friction rings, and on casing longitudinal grooves aligned with each other; in this case the latches are made in the form of U-shaped brackets located in the said grooves, in a retaining ring, enveloping them, forming a fastening lock. Srig. 5 bidz -P FIG A Editor M.Kelemes Compiled by V. Krasilnikov Tehred V. Kadar Order 1291/37 Circulation 812 Subscription INPUTS USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, st. Project, 4 Proofreader M. Pojo