A sealing structure of a three-phase asynchronous motor

Abstract

The utility model provides a kind of three-phase asynchronous motor sealing structure, belong to motor technical field.It solves the problem of poor sealing performance of existing three-phase asynchronous motor.This three-phase asynchronous motor sealing structure, the motor includes end cover for connecting flange, end cover is provided with sealing structure, sealing structure includes integrally connected inner ring seal ring and outer ring seal ring, inner ring seal ring and outer ring seal ring are integrally connected by sealing connecting portion, outer ring seal ring and inner ring seal ring are correspondingly provided with several groups of positioning concave ring, two corresponding positioning concave rings are equipped with the limiting rod passing through end cover, and the periphery of outer ring seal ring has several sealing convex lips.The utility model has the advantages of improving sealing performance.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and relates to a three-phase asynchronous motor, and particularly to a sealing structure for a three-phase asynchronous motor. Background Technology

[0002] Currently, the end cover of a three-phase asynchronous motor is connected to an external device via a flange. A sealing ring is installed between the end cover and the flange to prevent impurities in the operating environment from contacting the shaft and thus wearing it. However, the existing sealing ring has a simple structure and poor sealing performance, which still affects the operation of the shaft. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a sealing structure for a three-phase asynchronous motor.

[0004] The objective of this utility model can be achieved through the following technical solution: a sealing structure for a three-phase asynchronous motor, the motor including an end cover for connecting a flange, characterized in that a sealing structure is provided on the end cover, the sealing structure including an inner sealing ring and an outer sealing ring integrally connected, the inner sealing ring and the outer sealing ring being integrally connected through a sealing connection part, and the outer sealing ring and the inner sealing ring having a plurality of sets of positioning recesses corresponding to each other, a limiting rod passing through the end cover being provided between two corresponding positioning recesses, and the periphery of the outer sealing ring having a plurality of sealing protrusions.

[0005] In the above-mentioned sealing structure for a three-phase asynchronous motor, the end of the limiting rod protrudes through the end cover and is locked with a nut.

[0006] In the above-mentioned sealing structure for a three-phase asynchronous motor, the end cover has several connecting seats around its periphery that are connected to the flange.

[0007] Compared with existing technologies, this three-phase asynchronous motor sealing structure has the advantage of improved sealing performance. Attached Figure Description

[0008] Figure 1 This is a 3D view of the sealing structure of this three-phase asynchronous motor.

[0009] In the diagram, 1 is the end cap; 2 is the inner sealing ring; 3 is the outer sealing ring; 4 is the sealing connection part; 5 is the limiting rod; 6 is the sealing lip; and 7 is the connecting seat. Detailed Implementation

[0010] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0011] like Figure 1As shown, this three-phase asynchronous motor sealing structure includes an end cover 1 for connecting a flange. The end cover 1 has a sealing structure comprising an integrally connected inner sealing ring 2 and an outer sealing ring 3. The inner sealing ring 2 and the outer sealing ring 3 are integrally connected via a sealing connection part 4. The outer sealing ring 3 and the inner sealing ring 2 have corresponding sets of positioning recesses. A limiting rod 5 passing through the end cover 1 is provided between two corresponding positioning recesses. The outer sealing ring 3 has several sealing protrusions 6 at its periphery. The limiting rod 5 positions the sealing structure on the end cover 1, preventing radial deflection of the sealing structure. After the flange connection is installed, a fixed connection is formed, positioning the sealing structure. Furthermore, the structure at the periphery of the outer sealing ring 3 with its concave and convex shapes further strengthens the seal and improves sealing performance.

[0012] Preferably, the end of the limiting rod 5 protrudes from the end cap 1 and is locked with a nut.

[0013] To elaborate further, the end cap has several connecting seats 7 around its circumference that are connected to the flange and secured by bolts.

[0014] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0015] Although this document frequently uses terms such as end cap 1, inner sealing ring 2, outer sealing ring 3, sealing connection part 4, limiting rod 5, sealing lip 6, and connecting seat 7, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A sealing structure for a three-phase asynchronous motor, the motor including an end cover (1) for connecting a flange, characterized in that, The end cap (1) is provided with a sealing structure, which includes an inner sealing ring (2) and an outer sealing ring (3) that are integrally connected. The inner sealing ring (2) and the outer sealing ring (3) are integrally connected through a sealing connection part (4). The outer sealing ring (3) and the inner sealing ring (2) are provided with several sets of positioning recesses, and a limiting rod (5) that passes through the end cap (1) is provided between two corresponding positioning recesses. The outer sealing ring (3) has several sealing protrusions (6) at its periphery.

2. The sealing structure for a three-phase asynchronous motor according to claim 1, characterized in that, The end of the limiting rod (5) extends out of the end cap (1) and is locked with a nut.

3. The sealing structure for a three-phase asynchronous motor according to claim 1, characterized in that, The end cap (1) has several connecting seats (7) around its periphery that are connected to the flange.

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