System for removing sealing from a ball joint
AssigneeMilton Roy Europe
InventorsStephane Bulat, Arnaud Alex
Life of this patent
Estimating the term…
Abstract
Disclosed is a stirring device (D) including a screw shaft (1) driven by a drive unit, the screw shaft (1) being guided with respect to a body by way of a bearing, the stirring device furthermore including a seal (8) rigidly secured to the body and in contact with the ball joint (7) so as to ensure sealing with respect to the fluid to be stirred. The seal (8) is mounted on a seal holder (9), the seal holder (9) including a contact region (10) and being able to take up two positions, a first, operating position in which the seal (8) is in contact with the ball joint (7), and a second, maintenance position in which the contact region (10) is in contact with the ball joint (7).
Claims18
A stirring device (D) comprising:
- a stirring blade shaft (1) driven by drive means,
- the stirring blade shaft (1) being guided with respect to a body by a bearing,
- a ball joint (7) mounted at the stirring blade shaft (1), the ball joint (7) having a spherical surface,
- a seal support (9) of a first material, the seal support (9) located in a vicinity of fluid that is to be stirred and sealed against, the seal support (9) having a part comprised of the first material and defining a contact zone (10) for contact between the spherical surface of the ball joint (7),
- a seal (8) secured to the body and in contact with the ball joint (7) so as to seal against the fluid that is to be stirred, wherein the seal (8) is mounted on the seal support (9) comprising the contact zone (10), and
- actuating means able to cause a translational movement of the ball joint (7) and/or of the seal support (9) along the axis of the stirrer blade shaft (1) to thereby provide for sealing to be achieved through the contact between the spherical surface of the ball joint (7) and the contact zone (10) of the part of the seal support (9) upon said translation, while enabling removal and replacement of the seal (8).
A stirring device (D), comprising:
- a tank (R);
- a bearing (2) located on a machine body;
- a stirring blade shaft (1) mounted on the bearing and driven by drive device,
- the stirring blade shaft comprises a first end (1a) on which the stirring blade (3) is mounted, the stirring blade being situated to be in contact with a fluid that is to be stirred, the fluid being contained in the tank (R),
- the stirring blade shaft further comprises a second end (1b) operatively connected to the drive that drives the stirring blade shaft;
- a ball joint (7) in sliding connection with the stirring blade shaft, a connection between the stirring blade shaft and the ball joint providing a transmission of torque between the stirring blade shaft and the ball joint the ball joint (7) having a spherical surface;
- a seal support (9) of a first material having a proximal end of the first material and defining a shoulder comprising a contact zone (10) of a frustoconical shape, the seal support (9) being secured to the tank (R) and in contact with the ball joint (7);
- a seal (8) with a body mounted on the seal support (9) so that the seal (8) is held by the seal support (9) with the contact zone (10) of the shoulder in contact against the spherical surface of the ball joint (7) so as to seal against the fluid that is to be stirred;
- and
- an actuator that causes a translational movement of one of the group consisting of the ball joint (7) and the seal support (9), the translational movement being along an axis of the stirrer blade shaft (1) to thereby, through said translational movement, provide sealing to be achieved through the contact between the spherical surface of the ball joint (7) and the contact zone (10) of the frustoconical shape of the shoulder defined by the proximal end of the seal support (9), while enabling removal and replacement of the seal (8).
Dependencies are inferred from the claim text.