Pulping motor of paper machine
The pulping motor addresses the issue of inadequate protection for outer rotor motors in papermaking by incorporating a sealed design with a stator cover, rotor cover, and lip sealing ring, ensuring effective sealing against corrosive factory conditions and improving reliability.
Patent Information
- Application Number
- CN202420985675.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-08
AI Technical Summary
Outer rotor permanent magnet direct drive motors used in the papermaking industry are not adequately protected against acidic and alkaline corrosive steam due to structural limitations, leading to insufficient IP23 protection, which is not waterproof or dustproof, and cannot meet the harsh factory environment requirements.
A pulping motor design featuring a stator and outer rotor with a cable lock, stator sealing cover plate, rotor protective cover, lip sealing ring, and sealing plate to create a sealed environment, enhancing protection against dust and moisture, and maintaining contact with the outer rotor regardless of its state.
The design provides enhanced protection against corrosive environments, improving equipment reliability by ensuring a dynamic and static sealing effect, thus enhancing the motor's durability and performance in papermaking factories.
Smart Images
Figure CN222262257U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor protection, in particular to a pulping motor for a paper machine. Background Art
[0002] In the mixing application of the papermaking industry, the outer rotor permanent magnet direct drive motor is used to replace the traditional gearbox speed increase motor, which has significant advantages in energy saving, reliability, maintenance, etc. However, the factory production environment of the papermaking industry is mostly filled with various acidic and alkaline steams, which are highly corrosive to the insulation system of the motor; and the outer rotor motor is difficult to achieve a high level of protection due to its own structural reasons (the rotating part is outside). Usually, there is a gap of at least 0.2mm between the rotating part and the fixed part of the outer rotor motor, and the protection level is generally IP23, which is neither waterproof nor dustproof, and is even less resistant to corrosive steam, making it difficult to meet the use requirements. Utility Model Content
[0003] The utility model provides a pulping motor for a paper machine in order to solve the problems of the prior art.
[0004] The purpose of the utility model can be achieved through the following technical solutions: A paper machine pulping motor, comprising: a stator and an outer rotor rotatably arranged on the outside of the stator, a cable lock is arranged between the stator and the outer rotor, a stator flange and a stator sealing cover plate are arranged at one end of the stator, the stator flange and the stator are fixedly arranged, the stator sealing cover plate is arranged on a side of the stator close to the stator flange for sealing and protecting the stator, the outer rotor is rotatably arranged on the outside of the stator and is covered with a rotor protective cover on the outside, a lip sealing ring is arranged on a side of the rotor protective cover close to the stator flange, one end of the lip sealing ring is abutted against the stator sealing cover plate, and the other end is abutted against the outer rotor.
[0005] As a further improvement, a mounting groove is provided on a side of the outer rotor close to the stator flange, and the lip sealing ring is sleeved in the mounting groove.
[0006] As a further improvement, a sealing plate is provided between the stator and the outer rotor, and the cable lock is provided on the sealing plate.
[0007] As a further improvement, the stator flange and the stator sealing cover plate are sealed by means of a sealant.
[0008] As a further improvement, a mounting plate is provided on the stator flange, and a plurality of groups of the mounting plates are provided in a circular array, and a mounting hole is provided through each group of the mounting plates.
[0009] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a simple structure, and the stator and the stator flange are sealed by a stator sealing cover plate to realize the first protection of the stator. At the same time, a rotor protective cover fixedly arranged with the stator sealing cover plate is sleeved on the outer side of the outer rotor, and the outer rotor is protected by the rotor protective cover to isolate dust and moisture, thereby improving the reliability of the equipment. At the same time, a lip sealing ring is provided on the side of the rotor protective cover close to the stator sealing cover plate, and the lip sealing ring is limited by the stator sealing cover plate, so that a sealed environment is formed between the stator and the outer rotor, so that the lip sealing ring is always in contact with the outer rotor regardless of whether the motor is rotating or stationary, thereby realizing a dynamic and static sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the structure of the utility model;
[0011] Figure 2 It is a partial perspective view of the utility model;
[0012] Figure 3 For this utility model Figure 2 Enlarged view of part A in the figure.
[0013] In the figure, 1, stator; 11, cable lock; 12, stator flange; 121, mounting plate; 1211, mounting hole; 13, stator sealing cover plate; 2, outer rotor; 21, rotor protective cover; 22, lip sealing ring; 23, assembly groove; 3, sealing plate. DETAILED DESCRIPTION
[0014] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0016] Below is a combination of the embodiments and the attached Figures 1 to 3 , the technical solution of the utility model is further elaborated.
[0017] Example 1
[0018] A paper machine pulping motor comprises: a stator 1 and an outer rotor 2 rotatably arranged on the outside of the stator 1, a cable lock 11 is arranged between the stator 1 and the outer rotor 2, a stator flange 12 and a stator sealing cover plate 13 are arranged at one end of the stator 1, the stator flange 12 and the stator 1 are fixedly arranged, the stator sealing cover plate 13 is arranged on a side of the stator close to the stator flange 12 for sealing and protecting the stator 1, the outer rotor 2 is rotatably arranged on the outside of the stator 1 and is covered with a rotor protective cover 21 on the outside, a lip seal ring 22 is arranged on a side of the rotor protective cover 21 close to the stator flange 12, one end of the lip seal ring 22 abuts against the stator sealing cover plate 13, and the other end abuts against the outer rotor 2.
[0019] like Figures 1 to 3 As shown, the utility model has a simple structure. The stator 1 and the stator flange 12 are sealed by the stator sealing cover plate 13 to realize the first protection of the stator. At the same time, a rotor protective cover 21 is sleeved on the outer side of the outer rotor 2 and fixedly arranged with the stator sealing cover plate 13. The outer rotor is protected by the rotor protective cover 21 to isolate dust and moisture, thereby improving the reliability of the equipment. At the same time, a lip sealing ring 22 is provided on the side of the rotor protective cover 21 close to the stator sealing cover plate 13, and the lip sealing ring 22 is limited by the stator sealing cover plate 13, so that a sealed environment is formed between the stator 1 and the outer rotor 2, so that the lip sealing ring is always in contact with the outer rotor 2 regardless of whether the motor is rotating or stationary, thereby realizing a dynamic and static sealing effect.
[0020] As a further preferred embodiment, a mounting groove 23 is provided on one side of the outer rotor 2 close to the stator flange 12, and the lip sealing ring 22 is sleeved in the mounting groove 23. The lip sealing ring 22 is limited by the mounting groove 23 to improve the sealing effect of the equipment.
[0021] As a further preferred embodiment, a sealing plate 3 is provided between the stator 1 and the outer rotor 2, and the cable lock 11 is provided on the sealing plate 3. The cable lock 11 is sealed by the sealing plate 3 to further improve the sealing effect of the equipment.
[0022] As a further preferred embodiment, the stator flange 12 and the stator sealing cover plate 13 are sealed by means of a sealant.
[0023] As a further preferred embodiment, a mounting plate 121 is provided on the stator flange 12, and a plurality of mounting plates 121 are provided in a circular array. A mounting hole 1211 is provided through each group of mounting plates 121. The motor is installed through the plurality of mounting holes 1211, thereby improving the stability of the equipment during operation.
[0024] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.
Claims
1. A pulping motor for a paper machine, comprising: A stator (1) and an outer rotor (2) rotatably arranged outside the stator (1), a cable lock (11) being arranged between the stator (1) and the outer rotor (2), characterized in that a stator flange (12) and a stator sealing cover plate (13) are arranged at one end of the stator (1), the stator flange (12) and the stator (1) are fixedly arranged, the stator sealing cover plate (13) is arranged on a side of the stator close to the stator flange (12) for sealing and protecting the stator (1), the outer rotor (2) is rotatably arranged outside the stator (1) and is covered with a rotor protection cover (21) on the outside, a lip seal ring (22) is arranged on a side of the rotor protection cover (21) close to the stator flange (12), one end of the lip seal ring (22) is against the stator sealing cover plate (13), and the other end is against the outer rotor (2).
2. A pulping motor for a paper machine according to claim 1, characterized in that: A mounting groove (23) is provided on one side of the outer rotor (2) close to the stator flange (12), and the lip seal ring (22) is sleeved in the mounting groove (23).
3. A pulping motor for a paper machine according to claim 1, characterized in that: A sealing plate (3) is arranged between the stator (1) and the outer rotor (2), and the cable lock (11) is arranged on the sealing plate (3).
4. A pulping motor for a paper machine according to claim 1, characterized in that: The stator flange (12) and the stator sealing cover plate (13) are sealed by means of a sealant.
5. A pulping motor for a paper machine according to claim 1, characterized in that: The stator flange (12) is provided with a mounting plate (121), and a plurality of groups of the mounting plates (121) are provided in a circular array, and each group of the mounting plates (121) is provided with a mounting hole (1211) extending therethrough.