SU1474364A1 - Seals for rotating shafts - Google Patents

Abstract

The invention relates to the field of sealing technology, in particular to the sealing of vertical rotating shafts of apparatuses with mixing devices. The purpose of the invention is to expand the technological capabilities of the seal assembly by increasing its thermal stability. The seal assembly contains a U-shaped annular collar 2 connected to the shaft. The inner seal 4 placed in the housing 3 and pressed by the pressure sleeve 5 contacts the inner wall of the collar 2. heat exchange system. When the shaft 1 rotates, the heat flux coming from the shaft 1 to the collar 2 is compensated by the opposing heat flow resulting from the heat sink (heat supply) from the outer wall of the collar 2 when the wall contacts the heat exchanging agent. At the same time, the heat exchanging agent located in the cavity 6 at the expense of heat transfer through the wall of the housing 3 cools (heats) the seal 4 from the side of the housing 3. 1 sludge.

Description

(21) 4310531 / 23-29

(22) 09/28/87

(46) 04.23.89. Bul Number 15

(71) All-Union Titanium Research and Design Institute

(72) I.A. Grigorovich and B.V. Asafiev (53) 62-762 (088.8)

(56) Compaction and compaction technique: Handbook / Ed. LA Kondakova and others. M .: Mashinostroenie, 1986, p. 373, fig. 10.22.

OST 26-01-1247-75, p. 14, fig. 3. (54) KNOT OF SEALING ROTATING SHAFT

(57) The invention relates to a sealing technique, in particular to the sealing of vertical rotating shafts of apparatus with mixing devices. The aim of the invention is to expand the technological capabilities of the seal assembly by

increase its heat resistance. The seal assembly contains a U-shaped annular shoulder 2 connected to the shaft 1. The stuffing box 4 placed in the housing 3 contacts the internal wall of the collar 2 and is pressed by the pressure sleeve 5. - exchange system. When the shaft 1 rotates, the heat flux coming from the shaft 1 to the collar 2 is compensated by the opposing heat flow resulting from the heat sink (heat supply) from the outer wall of the collar 2 when the wall is in contact with the heat exchanging agent. At the same time, the heat exchanging agent in the cavity 6 is heat transfer through the wall of the housing 3 and cools (heats) the seal 4 from the side of the housing 3. 1 sludge.

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The invention relates to a sealing technique, in particular to the sealing of vertical rotating shafts of apparatuses with mixing devices, and can be applied in the chemical and other industries.

The purpose of the invention is to expand the technological capabilities of the seal assembly by increasing its thermal stability.

The drawing shows the seal assembly, a general view.

The seal assembly contains a U-shaped annular collar 2 connected to the shaft 1, with the inner wall of which is placed in contact with the stuffing box 4 of elastic material placed in the housing 3 and pressed by the pressure sleeve 5. The outer wall of the collar 2 is inserted into the annular cavity

6 corps 3. Cavity 6 branch pipes

7 and 8 is associated with a heat exchange, e.g. water cooling, system.

The seal assembly operates as follows.

Through the pipe 7 into the cavity 6 serves heat exchange agent (for example, water). The agent is drained through pipe 8. When the shaft 1 rotates, the heat flux from shaft 1 to shoulder 2 is partially compensated

five

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five

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the opposite heat flux arising due to the heat sink (heat supply) from the outer wall of the collar 2 when the wall is in contact with the heat exchanging agent. As a result, the temperature of the contact surface of the collar 2 with the seal 4 is set within the limits of the sealing material's properties, which ensures the efficiency of the seal. At the same time, the heat exchange agent located in the cavity 6 at the expense of effective heat transfer through the metal wall of the housing 3 cools (heats) the seal 4 from the side of the housing 3.

Claims (1)

Invention Formula A rotary shaft sealing assembly that contains a gland seal and a pressure bushing housed in a housing with an annular cavity associated with a heat exchange medium supply system, characterized in that, in order to expand the technological capabilities of the assembly, the shaft is provided with a U-shaped ring collar, one of the vertical walls of which is in contact with the inner surface of the stuffing box and the other is located in the annular cavity of the housing.