Combined sealing unit structure convenient to disassemble and assemble

Abstract

The utility model provides a combined type sealing unit structure convenient to disassemble and assemble. The combined type sealing unit structure comprises a flange ring, a middle ring, a cover ring, an oil collecting ring, a lining, a clamping ring and a sealing ring combination. The flange ring, the middle ring, the cover ring and the oil collecting ring are sequentially connected and arranged on the lining in a sleeving mode. An annular boss is arranged at the end, close to the oil collecting ring, of the lining, and the distance between the annular boss and the oil collecting ring is d. The sealing ring combination comprises a first sealing ring and a second sealing ring; a first lip is arranged at the contact part of the first sealing ring and the bushing; a second lip is arranged at the contact part of the second sealing ring and the bushing; the distance d between the annular boss and the oil collecting ring is larger than the width of the first lip and the width of the second lip. After the sealing unit is used for a period of time, when it is detected that a certain scratch depth exists at the contact position of the lining and the sealing ring and the oil leakage amount is large, the lining can be moved towards the direction of the oil collecting ring by the width size of one first lip or the second lip, and the service life of the sealing unit can be prolonged to be more than two times that of a normal structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship bearings, and particularly relates to a combined sealing unit structure which is convenient for disassembly and assembly. Background Art

[0002] For large ship bearing units, according to the operating conditions and maintenance requirements, requirements such as being convenient for disassembly and assembly, reliable sealing, and extending service life are put forward for their sealing. The existing structural sealing rings cannot meet these requirements in terms of processing manufacturability and disassembly requirements. Content of the Utility Model

[0003] In view of the above problems, the purpose of this application is to provide a combined sealing unit structure which is convenient for disassembly and assembly, so that through the adoption of a combined unitized design, the processing manufacturability and disassembly requirements are solved, and the user's usage requirements for the sealing ring are met.

[0004] To achieve some or all of the above purposes or other purposes, the following technical solutions are provided in this application: A combined sealing unit structure which is convenient for disassembly and assembly, including a flange ring, an intermediate ring, a cover ring, an oil collecting ring, a bushing, a clamping ring and a sealing ring combination; the flange ring, the intermediate ring, the cover ring and the oil collecting ring are connected in sequence, and the flange ring, the intermediate ring, the cover ring and the oil collecting ring are sleeved on the bushing; a circular boss is arranged at one end of the bushing close to the oil collecting ring, and there is a distance d between the circular boss and the oil collecting ring; one end of the circular boss far from the oil collecting ring is connected to the clamping ring; the sealing ring combination includes a first sealing ring and a second sealing ring, the first sealing ring and the second sealing ring are sleeved on the bushing, the first sealing ring is arranged between the flange ring and the intermediate ring, and a first lip is arranged at the contact part of the first sealing ring and the bushing; the second sealing ring is arranged between the intermediate ring and the cover ring, and a second lip is arranged at the contact part of the second sealing ring and the bushing; the distance d between the circular boss and the oil collecting ring is greater than the widths of the first lip and the second lip.

[0005] Furthermore, the sealing ring combination further includes a third sealing ring, a sealing felt ring and an O-ring; the third sealing ring is sleeved on the bushing, and the third sealing ring and the bushing are in interference fit, and the third sealing ring is arranged between the contact part of the cover ring and the bushing and the contact part of the oil collecting ring and the bushing; the sealing felt ring is sleeved on the bushing, and the sealing felt ring is arranged in the sealing groove of the inner diameter of the oil collecting ring; the contact part of the inner diameter of the bushing and the clamping ring is designed as a 45° chamfer, and an O-ring is arranged in the 45° chamfer.

[0006] Furthermore, the contact surfaces of the first sealing ring with the flange ring and the intermediate ring are arc-shaped; the contact surfaces of the second sealing ring with the intermediate ring and the cover ring are arc-shaped.

[0007] Furthermore, the first sealing ring and the second sealing ring are the same.

[0008] Further, it also includes a first hexagon socket head screw, a second hexagon socket head screw, a first hexagon head bolt, and a gasket; the flange ring and the middle ring are fixedly connected by the first hexagon socket head screw; the middle ring and the cover ring are fixedly connected by the second hexagon socket head screw; the cover ring and the oil collecting ring are fixedly connected by the first hexagon head bolt, and a gasket is arranged between the cover ring and the oil collecting ring.

[0009] Further, it also includes a second hexagon head bolt; the second hexagon head bolt axially penetrates the flange ring.

[0010] Further, it also includes a third hexagon socket head screw; the bushing and the clamping ring are fixedly connected by the third hexagon socket head screw, and the head of the third hexagon socket head screw is arranged inside the clamping ring.

[0011] Further, the middle ring is provided with oil holes radially penetrating through it, and there are several such oil holes.

[0012] Further, it also includes a fourth hexagon socket head screw, and the fourth hexagon socket head screw is arranged on the clamping ring; the oil collecting ring is of a split structure, and the clamping ring is of a split structure and is divided into two halves, and the two halves are fixedly connected by the fourth hexagon socket head screw.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. After using for a period of time, when it is checked and found that there is a certain scratch depth at the contact between the bushing 5 and the sealing ring and the oil leakage is large, the bushing 5 can be moved towards the oil collecting ring 4 by a width dimension of the wider one of the first lip or the second lip, and it can continue to be used normally, achieving the technical effect of extending the service life of the sealing unit to more than twice that of the normal structure. 2. The processing process is simplified and the sealing effect is good. 3. After the sealing ring is deformed under the oil pressure, it only adheres to the arc surface and relies on the middle ring and the cover ring 3 to bear the internal pressure of the unit, making up for the shortcoming of insufficient strength of the non-skeleton sealing ring. 4. The outer component structure realizes the disassembly and assembly of the sealing ring by removing the hexagon head bolt, which is convenient for disassembly and enhances the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram after moving the bushing;

[0016] Figure 3 is a three-dimensional schematic diagram of the present utility model;

[0017] In the figure: 1. Flange ring; 2. Intermediate ring; 3. Cover ring; 4. Oil collecting ring; 5. Bushing; 6. Clamping ring; 7-1. First sealing ring; 7-2. Second sealing ring; 8. Third sealing ring; 9. Sealing felt ring; 10. O-ring; 11. First hexagon socket head screw; 12. Second hexagon socket head screw; 13. First hexagon head bolt; 14. Second hexagon head bolt; 15. Gasket; 16. Oil hole; 17. Hexagon socket head screw; 18. Hexagon socket head screw. Specific implementation mode

[0018] In order to make the structure and function of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0019] See the attached Figures 1-3 , a combined sealing unit structure that is convenient for disassembly and assembly, including a flange ring 1, an intermediate ring 2, a cover ring 3, an oil collecting ring 4, a bushing 5, a clamping ring 6 and a sealing ring combination; the flange ring 1, the intermediate ring 2, the cover ring 3 and the oil collecting ring 4 are connected in sequence, and the flange ring 1, the intermediate ring 2, the cover ring 3 and the oil collecting ring 4 are sleeved on the bushing 5; an annular boss is provided at one end of the bushing 5 close to the oil collecting ring 4, and the annular boss is spaced from the oil collecting ring 4 by a distance d; the end of the annular boss away from the oil collecting ring 4 is connected to the clamping ring 6; the sealing ring combination includes a first sealing ring 7-1 and a second sealing ring 7-2, the first sealing ring 7-1 and the second sealing ring 7-2 are sleeved on the bushing 5, the first sealing ring 7-1 is arranged between the flange ring 1 and the intermediate ring 2, and a first lip is provided at the contact part of the first sealing ring 7-1 and the bushing 5; the second sealing ring 7-2 is arranged between the intermediate ring 2 and the cover ring 3, and a second lip is provided at the contact part of the second sealing ring 7-2 and the bushing 5; the distance d between the annular boss and the oil collecting ring 4 is greater than the widths of the first lip and the second lip.

[0020] Furthermore, after using for a period of time, when it is checked that there is a certain scratch depth and a large amount of oil leakage at the contact between the bushing 5 and the sealing ring, the bushing 5 can be moved towards the oil collecting ring 4 by a width dimension of the wider one of the first lip or the second lip, and it can continue to be used normally, achieving the technical effect of extending the service life of the sealing unit to more than twice that of the normal structure.

[0021] Further, the seal ring assembly further includes a third seal ring 8, a sealing felt ring 9, and an O-ring 10; the third seal ring 8 is sleeved on the bushing 5, and the third seal ring 8 and the bushing 5 are in interference fit. The third seal ring 8 is disposed between the contact portion of the cover ring 3 and the bushing 5 and the contact portion of the oil collecting ring 4 and the bushing 5; the sealing felt ring 9 is sleeved on the bushing 5, and the sealing felt ring 9 is disposed in the sealing groove of the inner diameter of the oil collecting ring 4; the contact portion between the inner diameter of the bushing 5 and the clamping ring 6 is designed as a 45° chamfer, and the O-ring 10 is disposed in the 45° chamfer; since the bushing 5 and the clamping ring 6 have a small clearance fit with the shaft, and the clearance is about 0.3 mm, in order to prevent oil leakage from this clearance and between the contact surfaces of the bushing 5 and the clamping ring 6, the contact portion between the inner diameter of the bushing 5 and the clamping ring 6 is designed as a 45° chamfer, and the O-ring 10 is placed in the chamfer, thereby realizing the sealing of the shaft. This structure not only simplifies the processing but also ensures the sealing effect.

[0022] Further, the contact surfaces of the first seal ring 7-1 with the flange ring 1 and the intermediate ring 2 are arc-shaped; the contact surfaces of the second seal ring 7-2 with the intermediate ring 2 and the cover ring 3 are arc-shaped; after the seal ring is deformed under the oil pressure, it fits on the arc surface and relies on the intermediate ring 2 and the cover ring 3 to bear the internal pressure of the unit, compensating for the disadvantage of insufficient strength of the non-skeleton seal ring.

[0023] Further, the first seal ring 7-1 and the second seal ring 7-2 are the same.

[0024] Further, it further includes a first hexagon socket head screw 11, a second hexagon socket head screw 12, a first hexagon head bolt 13, and a gasket 15; the flange ring 1 and the intermediate ring 2 are fixedly connected by the first hexagon socket head screw 11; the intermediate ring 2 and the cover ring 3 are fixedly connected by the second hexagon socket head screw 12; the cover ring 3 and the oil collecting ring 4 are fixedly connected by the first hexagon head bolt 13, and a gasket 15 is disposed between the cover ring 3 and the oil collecting ring 4; the structural design of the outer assembly realizes the disassembly and assembly of the sealing felt ring 9 and the third seal ring 8 by removing the first hexagon head bolt 13, realizes the disassembly and assembly of the second seal ring 7-2 by removing the second hexagon socket head screw 12, and realizes the disassembly and assembly of the first seal ring 7-1 by removing the first hexagon socket head screw 11; a gasket 15 is added between the cover ring 3 and the oil collecting ring 4, which facilitates disassembly and enhances the sealing effect.

[0025] Further, it further includes a second hexagon head bolt 14; the second hexagon head bolt 14 axially penetrates the flange ring 1.

[0026] Further, it further includes a third hexagon socket head screw 17; the bushing 5 and the clamping ring 6 are fixedly connected by the third hexagon socket head screw 17, and the head of the third hexagon socket head screw 17 is disposed inside the clamping ring 6.

[0027] Further, the middle ring 2 is provided with oil holes 16 penetrating radially, and there are several oil holes 16.

[0028] Further, it also includes a No. 4 hexagon socket head cap screw 18, and the No. 4 hexagon socket head cap screw 18 is arranged on the clamping ring 6; the oil collecting ring 4 is of a split structure, and the clamping ring 6 is of a split structure and is divided into two halves, and the two halves are fixedly connected by the No. 4 hexagon socket head cap screw 18; the oil collecting ring 4 and the clamping ring 6 are designed as split structures, which greatly facilitates the installation and disassembly of the sealing felt ring 9, the O-ring 10 and the whole sealing unit.

[0029] The above-disclosed are only the preferred embodiments of the present application, and of course, the scope of rights of the present application cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A combined seal unit structure that is convenient for disassembly and assembly, characterized in that: It includes a flange ring (1), an intermediate ring (2), a cover ring (3), an oil collecting ring (4), a bushing (5), a clamping ring (6) and a sealing ring combination; the flange ring (1), the intermediate ring (2), the cover ring (3) and the oil collecting ring (4) are connected in sequence, and the flange ring (1), the intermediate ring (2), the cover ring (3) and the oil collecting ring (4) are sleeved on the bushing (5); an annular boss is arranged at one end of the bushing (5) close to the oil collecting ring (4), and the annular boss is spaced from the oil collecting ring (4) by a distance d; one end of the annular boss away from the oil collecting ring (4) is connected to the clamping ring (6); the sealing ring combination includes a first sealing ring (7-1) and a second sealing ring (7-2), the first sealing ring (7-1) and the second sealing ring (7-2) are sleeved on the bushing (5), the first sealing ring (7-1) is arranged between the flange ring (1) and the intermediate ring (2), and a first lip is arranged at the contact part of the first sealing ring (7-1) and the bushing (5); the second sealing ring (7-2) is arranged between the intermediate ring (2) and the cover ring (3), and a second lip is arranged at the contact part of the second sealing ring (7-2) and the bushing (5); the distance d between the annular boss and the oil collecting ring (4) is greater than the widths of the first lip and the second lip.

2. The structure of a detachable combined sealing unit according to claim 1, characterized in that: The sealing ring combination further includes a third sealing ring (8), a sealing felt ring (9) and an O-ring (10); the third sealing ring (8) is sleeved on the bushing (5), the third sealing ring (8) and the bushing (5) are in interference fit, and the third sealing ring (8) is arranged between the contact part of the cover ring (3) and the bushing (5) and the contact part of the oil collecting ring (4) and the bushing (5); the sealing felt ring (9) is sleeved on the bushing (5), and the sealing felt ring (9) is arranged in the sealing groove of the inner diameter of the oil collecting ring (4); the contact part between the inner diameter of the bushing (5) and the clamping ring (6) is designed as a 45° chamfer, and the O-ring (10) is arranged in the 45° chamfer.

3. A detachable combined seal unit structure according to claim 1, characterized in that: The contact surfaces of the first sealing ring (7-1) with the flange ring (1) and the intermediate ring (2) are arc-shaped; the contact surfaces of the second sealing ring (7-2) with the intermediate ring (2) and the cover ring (3) are arc-shaped.

4. A detachable combined seal unit structure according to claim 1, characterized in that: The first sealing ring (7-1) and the second sealing ring (7-2) are the same.

5. A detachable combined seal unit structure according to claim 1, characterized in that: It further includes a first hexagon socket head screw (11), a second hexagon socket head screw (12), a first hexagon head bolt (13), and a gasket (15); the flange ring (1) and the intermediate ring (2) are fixedly connected by the first hexagon socket head screw (11); the intermediate ring (2) and the cover ring (3) are fixedly connected by the second hexagon socket head screw (12); the cover ring (3) and the oil collecting ring (4) are fixedly connected by the first hexagon head bolt (13), and a gasket (15) is arranged between the cover ring (3) and the oil collecting ring (4).

6. A detachable combined seal unit structure according to claim 1, characterized in that: It further includes a second hexagon head bolt (14); the second hexagon head bolt (14) axially penetrates the flange ring (1).

7. A detachable combined sealing unit structure according to claim 1, characterized in that: It further includes a third hexagon socket head screw (17); the bushing (5) and the clamping ring (6) are fixedly connected by the third hexagon socket head screw (17), and the head of the third hexagon socket head screw (17) is arranged inside the clamping ring (6).

8. A detachable combined sealing unit structure according to claim 1, characterized in that: The middle ring (2) is provided with radially penetrating oil holes (16), and there are several of the oil holes (16).

9. A detachable combined seal unit structure according to claim 1, characterized in that: It further includes a No. 4 hexagon socket head cap screw (18), and the No. 4 hexagon socket head cap screw (18) is arranged on the clamping ring (6); the oil collecting ring (4) is of a split structure, and the clamping ring (6) is of a split structure and is divided into two halves, and the two halves are fixedly connected by the No. 4 hexagon socket head cap screw (18).

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