Highly sealed noise-reducing explosion-proof motor

Abstract

The utility model discloses a kind of high sealing noise reduction type explosion-proof motor, it is related to motor equipment technical field, including rotating shaft, sealing assembly, static ring mechanism, dynamic ring mechanism, inner ring and outer ring.The utility model in static ring mechanism and dynamic ring mechanism are sealed on the different positions of rotating shaft respectively, can effectively guarantee rotating shaft while rotating guarantee its sealing treatment effect;Static ring is fixed in the inner wall of explosion-proof motor main body shell, and static ring inner wall and rotating shaft surface carry out the sealing treatment of sticking, when rotating shaft rotates, static ring does not occur rotating motion;Inner ring inner wall and rotating shaft outer wall are closely adhered, when rotating shaft rotates, inner ring rotates with rotating shaft and rotates, relative rotating motion occurs between inner ring and outer ring, realize the rotating sealing treatment to the surface of rotating shaft, the cooperation of static ring mechanism and dynamic ring mechanism, can effectively improve the high sealing noise reduction performance to rotating shaft.

Description

Technical Field

[0001] This utility model relates to the field of motor equipment technology, specifically a high-sealing, noise-reducing explosion-proof motor. Background Technology

[0002] Explosion-proof motors are motors that can be used in flammable and explosive environments. Explosion-proof motors do not produce electrical sparks during operation. They are mainly used in coal mines, petrochemicals, oil and gas, and chemical industries. In addition, they are also widely used in textiles, urban gas, metallurgy, transportation, grain and oil processing, pharmaceuticals, papermaking, and other sectors.

[0003] Currently, the sealing components of the rotating shaft of explosion-proof motors generally use multiple sealing rings to seal the outside of the rotating shaft. However, the spacing between the multiple sealing rings is generally fixed, and the sealing rings and the rotating shaft are assembled in a tight fit. This means that when the rotating shaft rotates, the sealing rings and the rotating shaft are always in rotational contact, and the rotational contact surfaces are all located on the outer wall of the rotating shaft, resulting in poor sealing performance. The design in the following patent has the above problems: (CN222215368U) discloses a positive pressure type explosion-proof motor, which relates to the field of explosion-proof motor technology. It includes a housing, and the bottom of the housing is provided with a support frame. There are two support frames, which are symmetrically distributed on both sides of the bottom of the housing. The motor body is provided inside the housing, and the rotating shaft is provided in the middle of the motor body. A sealing component is provided on the side of the housing. The sealing component includes a mounting frame. The side of the mounting frame is provided with a fixed side plate. The fixed side plate is provided with a limit component in the middle. The mounting frame is provided with a positioning ring, and the positioning ring is provided with a sealing ring inside. This invention features a sealing ring that is slidably connected to the inside of a positioning ring via a protrusion, and a ring-shaped limiting ring that limits the two limiting ear plates. This allows the two sealing rings to seal the connection between the outer shell and the rotating shaft. The two sets of sealing rings improve the sealing effect and increase the practicality of the device. Utility Model Content

[0004] The purpose of this invention is to provide a high-sealing, noise-reducing explosion-proof motor to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-sealing and noise-reducing explosion-proof motor, comprising an explosion-proof motor body, wherein a rotating shaft is provided at the center of one end of the explosion-proof motor body, and a sealing assembly matching the rotating shaft is provided on the inner wall of the explosion-proof motor body. The sealing assembly includes a stationary ring mechanism and a rotating ring mechanism. The stationary ring mechanism includes a stationary ring, which is fixedly connected to the inner wall of the explosion-proof motor body housing, and the inner wall of the stationary ring is tightly fitted with the outer wall of the rotating shaft. The rotating ring mechanism includes an inner ring and an outer ring, wherein the outer ring is rotatably sleeved on the outside of the inner ring, and the inner wall of the inner ring is tightly fitted with the outer wall of the rotating shaft.

[0006] Furthermore, the moving ring mechanism includes two inner rings and an outer ring, with a spring between the two outer rings, and the outer rings are slidably disposed inside the explosion-proof motor body.

[0007] Furthermore, guide sleeves are provided on adjacent sides of the outer walls of the two inner rings, one guide sleeve has a plurality of guide plates on its outer wall, and the other guide sleeve has a guide groove that matches the guide plates on its outer wall.

[0008] Furthermore, a first sealing plate is provided on the outer wall of one of the outer rings near the stationary ring, and a second sealing plate matching the first sealing plate is provided on the outer wall of the stationary ring near the moving ring mechanism.

[0009] Furthermore, the adjacent surfaces of the outer walls of the first and second sealing sheets have an annular fish-scale structure.

[0010] Furthermore, the adjacent surfaces of the outer walls of the first and second sealing sheets are annular vortex-shaped structures, and a partition is provided between two adjacent vortex strips of the annular vortex-shaped structure.

[0011] Furthermore, the inner wall of the inner ring is provided with a plurality of O-rings.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0013] 1. This utility model, by setting up a rotating shaft, a sealing assembly, a stationary ring mechanism, a moving ring mechanism, an inner ring, and an outer ring, with the stationary and moving ring mechanisms performing sealing treatment at different positions on the rotating shaft, can effectively ensure the sealing effect while the rotating shaft is rotating. The stationary ring is fixed to the inner wall of the explosion-proof motor body housing, and the inner wall of the stationary ring and the surface of the rotating shaft are fitted and sealed, so the stationary ring does not rotate when the rotating shaft rotates. The inner and outer rings are connected by a limiting rotational connection, ensuring that the inner and outer rings can rotate relative to each other, while also ensuring that the inner and outer rings undergo synchronous linear displacement. The inner wall of the inner ring is tightly fitted to the outer wall of the rotating shaft, and when the rotating shaft rotates, the inner ring rotates with the rotating shaft, and relative rotational movement occurs between the inner and outer rings, achieving rotational sealing treatment of the rotating shaft surface. The coordinated work of the stationary ring mechanism and the moving ring mechanism can effectively improve the high sealing and noise reduction performance of the rotating shaft.

[0014] 2. In this utility model, two inner rings and an outer ring are provided in the moving ring mechanism, and the two outer rings are fixedly connected by springs. Under the support of the springs, the two outer rings respectively press the two ends of the sliding cavity tightly, so that the contact surface between the outer ring and the stationary ring is in a tight sealing state, which can effectively improve the sealing effect on the outside of the rotating shaft. The two guide sleeves cooperate to guide and support the two inner rings. The cooperation of the guide plate and the guide groove can further improve the safety and stability of the linear movement adjustment of the two guide sleeves. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the sealing assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the dynamic ring mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the stationary ring and rotating shaft of this utility model;

[0020] Figure 5 This is a schematic diagram of the outer and inner rings of this utility model. Figure 1 ;

[0021] Figure 6 This is a schematic diagram of the stationary ring structure of this utility model. Figure 1 ;

[0022] Figure 7This is a schematic diagram of the outer and inner rings of this utility model. Figure 2 ;

[0023] Figure 8 This is a schematic diagram of the stationary ring structure of this utility model. Figure 2 ;

[0024] In the diagram: 1. Explosion-proof motor body; 2. Rotating shaft; 3. Sealing assembly; 301. Stationary ring mechanism; 302. Rotating ring mechanism; 303. Stationary ring; 304. Inner ring; 305. Outer ring; 306. Spring; 307. Guide sleeve; 308. Guide plate; 309. Guide groove; 310. First sealing plate; 311. Second sealing plate; 312. Swirl bar; 313. Spacer; 314. O-ring seal. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-8 This utility model provides a technical solution: a high-sealing, noise-reducing explosion-proof motor, comprising an explosion-proof motor body 1, a rotating shaft 2 rotatably connected at the center of one end of the explosion-proof motor body 1, and a sealing assembly 3 matching the rotating shaft 2 on the inner wall of the explosion-proof motor body 1. The sealing assembly 3 includes a stationary ring mechanism 301 and a rotating ring mechanism 302. The stationary ring mechanism 301 includes a stationary ring 303, which is fixedly connected to the inner wall of the explosion-proof motor body 1 housing. The inner wall of the stationary ring 303 is tightly fitted to the outer wall of the rotating shaft 2. The rotating ring mechanism 302 includes an inner ring 304 and an outer ring 305, with the outer ring 305 rotatably sleeved on the outside of the inner ring 304. The inner wall of the inner ring 304 is tightly fitted to the outer wall of the rotating shaft 2. The outer wall of shaft 2 is tightly fitted; the moving ring mechanism 302 includes two inner rings 304 and an outer ring 305, and a spring 306 is provided between the two outer rings 305. The outer rings 305 are slidably disposed inside the explosion-proof motor body 1; a guide sleeve 307 is provided on an adjacent side of the outer wall of the two inner rings 304, and a plurality of guide plates 308 are provided on the outer wall of one guide sleeve 307, and a guide groove 309 matching the guide plate 308 is opened on the outer wall of the other guide sleeve 307; a first sealing plate 310 is provided on the outer wall of one of the outer rings 305 near the stationary ring 303, and a second sealing plate 311 matching the first sealing plate 310 is provided on the outer wall of the stationary ring 303 near the moving ring mechanism 302.

[0027] In one embodiment, such as Figure 5and Figure 6 As shown, the adjacent surfaces of the outer walls of the first sealing sheet 310 and the second sealing sheet 311 have an annular fish scale structure, and a labyrinth-like sealing treatment is formed between the first sealing sheet 310 and the second sealing sheet 311, which can effectively improve the sealing effect between the first sealing sheet 310 and the second sealing sheet 311.

[0028] In one embodiment, such as Figure 7 and Figure 8 As shown, the adjacent surfaces of the outer walls of the first sealing sheet 310 and the second sealing sheet 311 are annular vortex-shaped structures, and a spacer 313 is provided between two adjacent vortex strips 312 of the annular vortex-shaped structure. By designing the surfaces of the first sealing sheet 310 and the second sealing sheet 311 into annular vortex-shaped structures, a labyrinth-like sealing treatment is formed between the first sealing sheet 310 and the second sealing sheet 311, which can effectively improve the contact sealing effect between the first sealing sheet 310 and the second sealing sheet 311. Through the cooperative work of the vortex strips 312 and the spacer 313, the labyrinth-like sealing effect between the first sealing sheet 310 and the second sealing sheet 311 can be further improved.

[0029] In one embodiment, the inner wall of the inner ring 304 is provided with a plurality of O-rings 314. The O-rings 314 seal the inner ring 304 and the rotating shaft 2 on the inner wall of the inner ring 304, which can effectively improve the sealing effect between the inner ring 304 and the rotating shaft 2.

[0030] The working principle of this utility model:

[0031] Refer to the instruction manual appendix Figures 1-4This invention comprises a rotating shaft 2, a sealing assembly 3, a stationary ring mechanism 301, a moving ring mechanism 302, an inner ring 304, and an outer ring 305. The rotating shaft 2 serves as the rotating output component of the explosion-proof motor body 1. The sealing assembly 3 seals the area between the rotating shaft 2 and the explosion-proof motor body 1, effectively ensuring the sealing effect of the rotating shaft 2. The stationary ring mechanism 301 and the moving ring mechanism 302 seal at different positions on the rotating shaft 2, effectively ensuring the sealing effect while the rotating shaft 2 rotates. The stationary ring 303 is fixed to the inner wall of the explosion-proof motor body 1 housing, and the inner wall of the stationary ring 303 is fitted and sealed to the surface of the rotating shaft 2. When the rotating shaft 2 rotates, the stationary ring 303 does not rotate; the inner ring 304 and the outer ring 305 are connected by a limiting rotational connection to ensure that the inner ring 304 and the outer ring 305 can rotate relative to each other, and at the same time ensure that the inner ring 304 and the outer ring 305 can move synchronously in a linear direction; the inner wall of the inner ring 304 and the outer wall of the rotating shaft 2 are tightly fitted together. When the rotating shaft 2 rotates, the inner ring 304 rotates with the rotating shaft 2, and the inner ring 304 and the outer ring 305 rotate relative to each other, so as to achieve a rotational sealing treatment on the surface of the rotating shaft 2. The cooperation of the stationary ring mechanism 301 and the moving ring mechanism 302 can effectively improve the high sealing and noise reduction performance of the rotating shaft 2.

[0032] Two inner rings 304 and an outer ring 305 are provided in the rotating ring mechanism 302, and the two outer rings 305 are fixedly connected by a spring 306. The two outer rings 305 and the spring are located inside the sliding cavity on the inner wall of the explosion-proof motor body 1. The two outer rings 305, supported by the spring 306, press the two ends of the sliding cavity tightly, so that the contact surface between the outer rings 305 and the stationary ring 303 is in a tight and sealed state, which can effectively improve the sealing effect on the outside of the rotating shaft 2. The two guide sleeves 307 cooperate to guide and support the two inner rings 304, which can effectively ensure the stability and safety of the linear movement of the inner rings 304 and the outer rings 305 along the rotating shaft 2. The cooperation of the guide plate 308 and the guide groove 309 can further improve the safety and stability of the linear movement adjustment of the two guide sleeves 307.

[0033] The first sealing plate 310 and the second sealing plate 311 provide a tight seal between the outer ring 305 and the stationary ring 303, which can further improve the sealing performance between the stationary ring 303 and the moving ring mechanism 302.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-sealing, noise-reducing explosion-proof motor, comprising an explosion-proof motor body (1), characterized in that: The explosion-proof motor body (1) has a rotating shaft (2) at one center of its rotatable connection. The inner wall of the explosion-proof motor body (1) is provided with a sealing assembly (3) that matches the rotating shaft (2). The sealing assembly (3) includes a stationary ring mechanism (301) and a moving ring mechanism (302). The stationary ring mechanism (301) includes a stationary ring (303), which is fixedly connected to the inner wall of the explosion-proof motor body (1). The inner wall of the stationary ring (303) is tightly fitted to the outer wall of the rotating shaft (2). The moving ring mechanism (302) includes an inner ring (304) and an outer ring (305), which is rotatably sleeved on the outside of the inner ring (304). The inner wall of the inner ring (304) is tightly fitted to the outer wall of the rotating shaft (2).

2. The high-sealing, noise-reducing explosion-proof motor according to claim 1, characterized in that: The moving ring mechanism (302) includes two inner rings (304) and an outer ring (305), with a spring (306) between the two outer rings (305), and the outer rings (305) are slidably disposed inside the explosion-proof motor body (1).

3. The high-sealing, noise-reducing explosion-proof motor according to claim 2, characterized in that: The outer walls of the two inner rings (304) are provided with guide sleeves (307) on adjacent sides. One guide sleeve (307) has a plurality of guide plates (308) on its outer wall, and the other guide sleeve (307) has a guide groove (309) that matches the guide plates (308) on its outer wall.

4. The high-sealing, noise-reducing explosion-proof motor according to claim 2, characterized in that: A first sealing plate (310) is provided on the outer wall of one of the outer rings (305) near the stationary ring (303), and a second sealing plate (311) matching the first sealing plate (310) is provided on the side of the outer wall of the stationary ring (303) near the moving ring mechanism (302).

5. The high-sealing, noise-reducing explosion-proof motor according to claim 4, characterized in that: The adjacent surfaces of the outer walls of the first sealing sheet (310) and the second sealing sheet (311) have annular fish scale-like structures.

6. The high-sealing, noise-reducing explosion-proof motor according to claim 4, characterized in that: The adjacent surfaces of the outer walls of the first sealing sheet (310) and the second sealing sheet (311) are annular vortex-shaped structures, and a partition (313) is provided between two adjacent vortex strips (312) of the annular vortex-shaped structure.

7. The high-sealing, noise-reducing explosion-proof motor according to claim 1, characterized in that: The inner ring (304) has a plurality of O-rings (314) on its inner wall.

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