초록 ▼

The sealing device is for drum filters or filter presses to form a seal between the rotary drum end faces and the end faces of the trough in which the rotary drums are situated. A sealing element (3 ) is disposed in a groove (1) on the rotary drum end face, in which the sealing element (3) is presse

The sealing device is for drum filters or filter presses to form a seal between the rotary drum end faces and the end faces of the trough in which the rotary drums are situated. A sealing element (3 ) is disposed in a groove (1) on the rotary drum end face, in which the sealing element (3) is pressed into contact against the opposite part by a hose element (2), preferably in form of two flexible hoses (2a, 2b), which can be pressurized internally. The hoses (2a, 2b) are disposed one on top of the other in the groove (1) beneath the sealing element (3). The two open ends of the hose element ( 2) are provided with sleeves (7) which enclose the ends. The sleeves (7) are held in place in the groove (1) with a holder element (10). Spaces (19a, 19b) are formed on both sides of the middle piece (12) of the holder element. One space (19a) is provided with an inlet ( 17) for pressurizing medium and the other space (19b) is provided with an outlet (18) for the pressurizing medium. The sealing device also has a sleeve (7) and a holder element ( 10).

대표청구항 ▼

The invention claimed is: 1. A sealing device for drum filters or filter presses for forming a seal between rotary drum end faces and end faces of a stationary trough in which rotary drums are being situated, the sealing device comprises: a sealing element (3) disposed in a cylindrical groove (1) s

The invention claimed is: 1. A sealing device for drum filters or filter presses for forming a seal between rotary drum end faces and end faces of a stationary trough in which rotary drums are being situated, the sealing device comprises: a sealing element (3) disposed in a cylindrical groove (1) situated in a periphery of an end face, in which the sealing element (3) is pressed into sealing contact against an opposite end face by a force exertion member in a form of a hose element (2) , which is constituted by at least two flexible hoses (2a, 2b) disposed one on top of the other flexible hose in a bottom of the groove (1) beneath the sealing element (3), the hoses (2a, 2b) being internally pressurizable for a formation of a force exertion, the hose element ( 2) having two ends in which the two hoses (2a, 2 b) disposed one on top of the other are open at their respective ends and the two ends of the hose element being provided with sleeves ( 7) which enclose the open ends of the hoses (2a, 2b) and the sleeves (7) being held in place in the groove (1) with a T-shaped holder element (10) having a cover (11) and a middle piece (12), spaces (19 a, 19b) being formed on both sides of the middle piece (12) of the holder element between the ends of the hose element (2) and the middle piece (12), the space (19a) being provided with an inlet (17) for pressurizing medium and the space (19b) on the other side of the middle piece (12 ) of the holder element being provided with an outlet (18) for the pressurizing medium. 2. The sealing device according to claim 1 wherein the holder element (10) is locked against the bottom of the groove (1) with a positioning screw (20) passing through the middle piece ( 12) of the holder element, the holder element (10) locking the sleeves (7) in position in the groove (1) by the use of form-locking members (16, 16') in the bottom of the groove (1). 3. The sealing device according to claim 1, the bottom side of the sealing element (3) has a hole (23) defined therein that is matched against an upper part of a positioning screw (20), the sealing element (3) being locked in its position in a longitudinal direction of the groove (1). 4. The sealing device according to claim 1 wherein the inlet (17) and the outlet (18) for the pressurizing medium are constituted by holes in a side of the groove (1). 5. The sealing device according to claim 1 wherein the sealing device has a sleeve (7) for mounting in a cylindrical groove (1) situated in the periphery of an end face so that the sleeve (7) encloses the mutually adjoining and joined-together ends of the hoses (2a, b) in the hose element (2), at the same time as the ends of the hoses (2a, 2 b) are left open. 6. The sealing device according to claim 5 wherein an outer cross-sectional dimension of the sleeve (7) at right angles relative to the hose element (2) is adapted to a dimension of the groove (1) in such a way that they closely connect to the bottom and sides of the groove (1) and in that the sleeve (7) has a height above the bottom of the groove (1) which provides room for a holder element (10) without the holder element sticking up out of the groove (1). 7. The sealing device according to claim 5 wherein the ends of the hoses (2a, b) are provided with internally supporting sleeves (9) of a length substantially corresponding to a length of the sleeve (7) in a longitudinal direction of the groove (1) and have an oval shape. 8. The sealing device according to claim 5 wherein the sleeve (7), on the side facing the bottom of the groove (1), is provided with a projection (8) arranged to fit in a corresponding congruent form-locking member (16, 16') in the bottom of the groove (1) so as to hold the sleeve (7) and the hose element (2) in a predetermined fixed position. 9. The sealing device according to claim 5 wherein the sleeve has an internal support in a hose mouth that has a length substantially corresponding to a length of the sleeve (7) and an oval shape, with a minor axis being parallel to a vertical axis of a sealing element. 10. The sealing device according to claim 5 wherein the sleeve is made of an elastomer. 11. The sealing device according to claim 1 wherein the sealing device has a holder element (10) for fixating two sleeves (7) in a groove (1) and mutually sealing two open ends of the hose element (2) and for forming spaces (19a, 19b) on both sides of the holder element (10) in front of these sleeves (7) so as to use these spaces (19a, 19b) and sleeves (7) to distribute a pressurizing medium to the hose element (2), an overlying cover (11) is arranged so that the overlying cover runs in a longitudinal direction of the groove (1), in which an edge of the cover (11) is provided with a circumferential groove (13), having a seal ( 14), and a middle piece (12) configured such that a shape of the middle piece (12) corresponds to a shape of the bottom and sides of the groove (1) in order to provide a sealing function, and in which the holder element (10), in its middle piece ( 12), is provided with a through-hole (15) so as to, with a through-passing positioning screw (20), be locked in place against a threaded hole (15') in the bottom of the groove (1). 12. The sealing device according to claim 11 wherein the holder element (10) consists of two parts in a form of a cover ( 21) and a middle piece (22).