Stirring kettle mechanical sealing element convenient to maintain

Abstract

The utility model discloses a stirring kettle mechanical sealing element convenient to maintain, which comprises a flange plate and a shell, a fixed ring is movably arranged in the flange plate, a first movable ring is rotatably connected in the shell, a plurality of springs are movably connected to the bottom end of the first movable ring, and a second movable ring is movably connected to the bottom ends of the plurality of springs. The second movable ring and the fixed ring are in contact with each other, each of the fixed ring and the second movable ring is formed by connecting two semicircular rings and a combined bolt, the shell is movably connected with the flange plate, and the end, located outside the shell, of the first movable ring is movably connected with a transmission ring. According to the mechanical sealing piece, when the shell is separated from the flange plate, the second movable ring and the fixed ring can be detached into two semicircular rings by detaching and combining the bolts, so that the second movable ring and the fixed ring are conveniently replaced, and the mechanical sealing piece is maintained under the condition that a driving device is not detached; and the mechanical sealing element is more convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a mechanical seal for a mixing vessel that is easy to maintain. Background Technology

[0002] Mechanical seals are among the most precise and complex basic mechanical components, and are key parts of various pumps, reaction vessels, turbine compressors, submersible motors, and other equipment.

[0003] The main sealing components of a mechanical seal are a rotating ring and a stationary ring. The rotating ring is connected to the rotating shaft, and the stationary ring is fixed to the vessel body. Through the elastic compensation of the spring, the friction between the rotating ring and the stationary ring generates a liquid film, achieving the mechanical sealing effect. However, existing rotating and stationary rings usually adopt annular structures. After long-term use, the friction between the rotating and stationary rings of the mechanical seal is prone to wear. The annular structure makes maintenance and replacement inconvenient, requiring the mechanical seal and drive device to be completely disassembled before maintenance can be performed. Therefore, a mechanical seal for a stirred tank that is easy to maintain is needed to meet people's needs. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanical seal for a stirred tank that is easy to maintain, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanical seal for an easy-to-maintain mixing vessel, comprising a flange and a housing. A fixed ring is movably installed inside the flange, and a first rotating ring is rotatably connected inside the housing. Several springs are movably connected to the bottom end of the first rotating ring, and a second rotating ring is movably connected to the bottom end of the springs. The second rotating ring is in contact with the fixed ring. Both the fixed ring and the second rotating ring are formed by two semi-circular rings connected by a connecting bolt. The housing and the flange are movably connected. A transmission ring is movably connected to the end of the first rotating ring located outside the housing, and several locking bolts are threaded onto the outer wall of the transmission ring.

[0006] Preferably, the flange has several mounting holes on its end face.

[0007] Preferably, the flange has a mounting groove, and two locating pins are inserted into the mounting groove. The two locating pins are respectively inserted into the two semi-circular ends of the fixed ring.

[0008] Preferably, spring slots are provided at the bottom of the first moving ring and at the top of the two semicircular rings of the second moving ring, and the two ends of the same spring are respectively inserted into the corresponding two spring slots.

[0009] Preferably, an extension ring is provided at the bottom end of the first moving ring, and two slots are provided on the extension ring. Each of the two semicircular rings of the second moving ring is provided with an insert ring, and the two insert rings are respectively inserted into the slots.

[0010] Preferably, the outer casing and the flange are connected by a plurality of first connecting bolts.

[0011] Preferably, the transmission ring and the first moving ring are connected by a plurality of second connecting bolts.

[0012] The beneficial effects of this utility model are:

[0013] In this invention, the second rotating ring and the fixed ring are designed as two semi-circular rings. When the housing is separated from the flange, the mechanical seal can be disassembled into two semi-circular rings by removing the bolts. This facilitates the replacement of the second rotating ring and the fixed ring, and enables the maintenance of the mechanical seal without disassembling the drive device, making the maintenance of the mechanical seal more convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a mechanical seal for a stirred tank that is easy to maintain, as proposed in this utility model.

[0015] Figure 2 This is a front cross-sectional view of a mechanical seal for a stirred tank that is easy to maintain, as proposed in this utility model.

[0016] Figure 3 This is a side view sectional structural diagram of a mechanical seal for a stirred tank that is easy to maintain, as proposed in this utility model.

[0017] Figure 4 This is a top view cross-sectional diagram of the fixed ring structure of a mechanical seal for a stirred tank that is easy to maintain, as proposed in this utility model.

[0018] Figure 5 This is a top view cross-sectional diagram of the second moving ring of a mechanical seal for a stirred tank that is easy to maintain, as proposed in this utility model.

[0019] In the diagram: 1. Flange; 2. Housing; 3. Fixed ring; 4. First moving ring; 5. Spring; 6. Second moving ring; 7. Semi-circular ring; 8. Merging bolt; 9. Transmission ring; 10. Locking bolt; 11. Mounting hole; 12. Mounting groove; 13. Locating pin; 14. Spring slot; 15. Extension ring; 16. Groove; 17. Insert ring; 18. First connecting bolt; 19. Second connecting bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-5 A mechanical seal for an easy-to-maintain mixing vessel includes a flange 1 and a housing 2. A fixed ring 3 is movably installed inside the flange 1. A first rotating ring 4 is rotatably connected inside the housing 2. Several springs 5 ​​are movably connected to the bottom end of the first rotating ring 4. A second rotating ring 6 is movably connected to the bottom end of the several springs 5. The second rotating ring 6 is in contact with the fixed ring 3. Both the fixed ring 3 and the second rotating ring 6 are connected by two semi-circular rings 7 and merging bolts 8. The housing 2 is movably connected to the flange 1. A transmission ring 9 is movably connected to the end of the first rotating ring 4 located outside the housing 2. Several locking bolts 10 are threadedly connected to the outer wall of the transmission ring 9.

[0022] During installation, flange 1 is fitted onto the rotating shaft and connected to the vessel body of the mixing vessel, and is in a relatively stationary state. Fixed ring 3 is fitted onto the rotating shaft and installed on flange 1, and is also in a relatively stationary state with flange 1. After assembling the first moving ring 4, spring 5 and second moving ring 6, it is fitted onto the rotating shaft, and the end face of the second moving ring 6 is in contact with the end face of the fixed ring 3. The outer shell 2 is fitted onto the first moving ring 4 and the second moving ring 6 and connected and fixed to flange 1. The transmission ring 9 is connected to the first moving ring 4, and the transmission ring 9 is connected and fixed to the rotating shaft by tightening the locking bolt 10, so that the rotation of the rotating shaft can drive the transmission ring 9 to rotate, and the transmission ring 9 can drive the first moving ring 4 and the second moving ring 6 to rotate.

[0023] During maintenance, loosen the locking bolt 10 to release the fixation between the transmission ring 9 and the rotating shaft, loosen the connection between the transmission ring 9 and the first moving ring 4, remove the outer casing 2 from the flange 1, exposing the first moving ring 4, the second moving ring 6, and the fixed ring 3 to the outside, separate the second moving ring 6 from the spring 5, separate the fixed ring 3 from the flange 1, loosen the merging bolt 8 to release the connection between the two semicircular rings 7 of the second moving ring 6 and the fixed ring 3, allowing the second moving ring 6 and the fixed ring 3 to be easily removed from the outer wall of the rotating shaft, thus achieving the purpose of convenient replacement.

[0024] Specifically, in this embodiment, a plurality of mounting holes 11 are provided on the end face of the flange 1 for fixing the flange 1 to the body of the mixing vessel.

[0025] Specifically, in this embodiment, the flange 1 is provided with a mounting groove 12, and two positioning pins 13 are inserted into the mounting groove 12. The two positioning pins 13 are respectively inserted into the ends of the two semi-circular rings 7 of the fixed ring 3, providing a limit for the two semi-circular rings 7 of the fixed ring 3, and preventing them from rotating under the effect of the rotational friction of the second moving ring 6.

[0026] Specifically, in this embodiment, spring slots 14 are provided at the bottom of the first moving ring 4 and the top of the two semicircular rings 7 of the second moving ring 6. The two ends of the same spring 5 are respectively inserted into the corresponding two spring slots 14 to improve the transmission effect of rotation between the first moving ring 4 and the second moving ring 6.

[0027] Specifically, in this embodiment, an extension ring 15 is provided at the bottom end of the first moving ring 4, and two slots 16 are provided on the extension ring 15. Each of the two semicircular rings 7 of the second moving ring 6 is provided with a plug ring 17, and the two plug rings 17 are respectively inserted into the slots 16 to improve the connection effect between the first moving ring 4 and the second moving ring 6 and ensure the synchronicity of rotation.

[0028] Specifically, in this embodiment, the outer shell 2 and the flange 1 are connected by a number of first connecting bolts 18 to ensure the connection effect between the outer shell 2 and the flange 1, while facilitating installation and disassembly.

[0029] Specifically, in this embodiment, the transmission ring 9 and the first moving ring 4 are connected by a number of second connecting bolts 19 to ensure the connection effect between the transmission ring 9 and the first moving ring 4, and at the same time facilitate installation and disassembly.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A maintenance-friendly mechanical seal for a stirred tank, comprising a flange (1) and a housing (2), characterized in that: A fixed ring (3) is movably installed inside the flange (1). A first moving ring (4) is rotatably connected inside the outer shell (2). Several springs (5) are movably connected to the bottom end of the first moving ring (4). A second moving ring (6) is movably connected to the bottom end of the several springs (5). The second moving ring (6) is in contact with the fixed ring (3). The fixed ring (3) and the second moving ring (6) are both connected by two semi-circular rings (7) and merging bolts (8). The outer shell (2) is movably connected to the flange (1). A transmission ring (9) is movably connected to the end of the first moving ring (4) located outside the outer shell (2). Several locking bolts (10) are threaded on the outer wall of the transmission ring (9).

2. The easy-to-maintain mechanical seal for a stirred tank according to claim 1, characterized in that: The flange (1) has several mounting holes (11) on its end face.

3. The easy-to-maintain mechanical seal for a stirred tank according to claim 1, characterized in that: The flange (1) has an installation groove (12) and two positioning pins (13) are inserted into the installation groove (12). The two positioning pins (13) are respectively inserted into the ends of the two semi-circular rings (7) of the fixed ring (3).

4. The easy-to-maintain mechanical seal for a stirred tank according to claim 1, characterized in that: Spring slots (14) are provided at the bottom of the first moving ring (4) and the top of the two semicircular rings (7) of the second moving ring (6). The two ends of the same spring (5) are respectively inserted into the corresponding two spring slots (14).

5. The easy-to-maintain mechanical seal for a stirred tank according to claim 1, characterized in that: An extension ring (15) is provided at the bottom end of the first moving ring (4), and two slots (16) are provided on the extension ring (15). Two semicircular rings (7) of the second moving ring (6) are provided with insert rings (17), and the two insert rings (17) are respectively inserted into the slots (16).

6. The easy-to-maintain mechanical seal for a stirred tank according to claim 1, characterized in that: The outer shell (2) and the flange (1) are connected by a number of first connecting bolts (18).

7. The easy-to-maintain mechanical seal for a stirred tank according to claim 1, characterized in that: The transmission ring (9) is connected to the first moving ring (4) by a number of second connecting bolts (19).

Images