DE155953C - - Google Patents

Description

3ia i.vf (\ cf \ c \ t 3a Ιοί ι Ι'α ι ti I

IMPERIAL 7k

8. PATENT OFFICE

JVl 155953 CLASS 47ΰ. /

annular liquid seal.

Ring-shaped liquid seals based on centrifugal action to avoid stuffing boxes and the like are known (cf. e.g. Patent 2392),
The subject of the present invention is a thrust bearing relief using this known liquid seal for gas-tight or air-tight closure of a gas or air housing consisting of a stationary part and a closure parts rotating with the shaft around this fixed part with clearance, in which, depending on requirements, over- or negative pressure is generated in order to bring about a bearing relief in the direction of the axis by its action on the closure plate connected to the shaft.

For this purpose, the rotating shafts or those sitting on them

ao wheels, disks α provided with the two interlocking rings b and c, one of which b is firmly and tightly connected to the rotating part a , while the other c is attached to the fixed wall b .

If now in the rotating ring b a liquid, for. B. water, glycerine, mercury, etc., introduced, this is carried along by the friction of the ring b and spread over the circumference; the well-known liquid ring that rotates around the axis of the Weifen forms - with a certain pressure.

Rule in both rooms d and e

If the pressure is the same, the liquid in the two chambers formed by the separating ring C will be at the same level.

If, in the case of FIG. 1, space d is brought into connection with a low pressure space, in the case of FIG move inward. Due to the centrifugal force of the liquid in one chamber, which is / 2 higher, the overpressure prevailing in space e (Fig. 1) or d (Fig. 2) is kept in equilibrium and, in the known manner, a complete, almost frictionless sealing of the underneath different pressures standing spaces d and e , but at the same time due to the overpressure or underpressure prevailing in the spaces ti, an axial pressure is exerted on the disk α and the shaft connected to it, thereby relieving the bearing in the same direction.

By changing the disc diameter, the specific weight of the sealing liquid, the overpressure level / 2 and by connecting two or more such devices in series can also be used with small numbers of revolutions exerting large axial forces can be achieved.

In order to increase the friction entrainment, the ring b can be provided with grooves or blades.

In the case of lying waves, the outflow of the liquid during the transition to rest

To prevent this, the stationary ring e can have holes through which the fluid that is still under pressure during the rotation can be drained and fed back in when the system is started up.

Claims (1)

Patent claim: Thrust bearing relief using the known, centrifugal-based, annular liquid seal, characterized in that a gas or air housing connected to the shaft consists of a fixed open part (c) and a sealing part (a) that rotates against this and is sealed by centrifugal liquid In the sense of the bearing relief in the axial direction, an overpressure or underpressure is generated. For this purpose ι sheet of drawings.