Rotor sealing structure

Abstract

The utility model relates to the technical field of water pump rotor sealing, in particular to a rotor sealing structure which comprises a rotor body. The sealing ring is mounted at the end part of the rotor body, and a mounting groove is formed in the outer edge of the sealing ring along the circumference direction of the sealing ring; the sealing O-shaped ring is arranged in the mounting groove and extends out of the outer side of the sealing ring; and the outer ring is arranged on the rotor body in a sleeving mode, and the edge of the outer ring is bent towards the end of the rotor body in an edge pressing mode and abuts against the sealing ring, so that a sealing structure is formed between the outer ring and the rotor body and between the sealing ring and the O-shaped sealing ring. The water pump rotor has the effects of improving the sealing effect and prolonging the service life of the water pump rotor.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water pump rotor seal especially relates to a rotor seal structure. BACKGROUND

[0002] The water pump rotor seal structure is the key part for ensuring the normal operation of the water pump and preventing the working liquid from leaking. Figure 1 and Figure 2 As shown in the drawings, the water pump rotor seal structure usually comprises a seal ring with a chute structure, a seal O-shaped ring and an outer ring. When assembling, the seal ring is installed to the rotor end portion and the chute structure is abutted to the rotor end portion, then the seal O-shaped ring is put into the chute structure of the seal ring, the seal O-shaped ring is abutted to the space between the seal ring and the rotor end portion, the rotor is edge sealed by the outer ring, and the outer ring edge extending to the rotor end portion is pressed to the seal ring, and the sealing process of the rotor is completed. However, the current rotor seal structure has the following problems in the installation process: 1. The seal ring adopts the chute structure, and the seal O-shaped ring must be installed to the rotor end portion before the seal ring is installed, which is time-consuming and laborious; 2. After the current rotor seal structure is installed, the gap between the seal O-shaped ring and the surrounding structure is large, and in the process of edge sealing of the outer ring, the seal O-shaped ring is deformed to the invalid gap, thereby dispersing the stress of the seal O-shaped ring sealing position, resulting in insufficient sealing, which needs to be solved urgently. SUMMARY

[0003] In view of the above problems in the prior art, the present application provides a rotor seal structure.

[0004] The above invention of the present application is realized by the following technical scheme:

[0005] The rotor body comprises a rotor body.

[0006] The seal ring is installed to the end portion of the rotor body, and an installation groove is formed in the outer edge of the seal ring along the circumference direction.

[0007] The seal O-shaped ring is arranged in the installation groove and extends outward of the seal ring.

[0008] The outer ring is sleeved on the rotor body, and the outer ring edge is bent to the end portion of the rotor body by pressing and abuts against the seal ring, so as to form a sealing structure between the outer ring, the rotor body, the seal ring and the seal O-shaped ring.

[0009] By adopting the technical scheme, during assembly, the staff can directly place the sealing O-shaped ring in the mounting groove formed in the outer edge of the sealing ring, without the need to first install the sealing ring and then separately place the sealing O-shaped ring, which can simplify the assembly process and reduce the gap between the sealing O-shaped ring and the surrounding structure, avoid ineffective deformation, and improve the sealing effect. When the sealing O-shaped ring is placed in the mounting groove of the sealing ring, part of the sealing O-shaped ring extends outward from the sealing ring. This design can provide necessary sealing medium for the edge pressing of the outer ring when the edge pressing of the outer ring is performed, so that the sealing O-shaped ring can only deform and flow outward to the outer edge of the outer ring and the rotor body when compressed, i.e., the stress at the sealing position is increased, thereby improving the sealing effect and further improving the service life of the water pump rotor.

[0010] In a preferred example, the mounting groove is sized and shaped to match the sealing O-shaped ring.

[0011] By adopting the technical scheme, the sealing O-shaped ring and the sealing ring can be tightly matched during sealing, the stress at the sealing position is increased, and the sealing effect is improved.

[0012] In a preferred example, the sealing ring extends outward from the side away from the rotor body and is provided with a flange, and the outer ring edge is bent and abuts against the flange by edge pressing toward the end of the rotor body.

[0013] By adopting the technical scheme, the flange can provide an accurate abutting surface for the edge pressing of the outer ring edge, thereby improving the sealing efficiency. In addition, the flange increases the area of the sealing contact between the sealing ring and the outer ring, thereby further improving the sealing effect.

[0014] In a preferred example, the outer ring has a thickness of 0.1mm-0.3mm.

[0015] By adopting the technical scheme, the outer ring with the thickness can ensure the sealing performance while reducing the difficulty of edge pressing of the outer ring, and compared with the conventional 0.5mm outer ring, the cost is lower and the processing efficiency is higher.

[0016] In summary, the present application has at least one of the following beneficial technical effects:

[0017] 1、In the assembly, the staff can directly place the sealing O-ring in the installation groove of the sealing ring first, without installing the sealing ring and then placing the sealing O-ring separately, which can simplify the assembly process and reduce the gap between the sealing O-ring and the surrounding structure, avoid invalid deformation, improve the sealing effect, and when the sealing O-ring is placed in the installation groove of the sealing ring, part of it extends outside the sealing ring, which can provide necessary sealing medium for the edge pressing of the outer ring when the edge pressing of the outer ring is performed, so that the sealing O-ring can only deform to the outer edge of the outer ring and the rotor body when compressed, that is, the stress at the sealing position is increased, thereby improving the sealing effect and prolonging the service life of the water pump rotor.

[0018] 2、By matching the size and shape of the installation groove with the sealing O-ring, the sealing O-ring and the sealing ring can be tightly matched during sealing, increasing the stress at the sealing position and improving the sealing effect.

[0019] 3、By setting the flange, an accurate abutting surface can be provided for the edge pressing of the outer ring to improve the sealing efficiency, and the setting of the flange increases the sealing contact area between the sealing ring and the outer ring to further improve the sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a sectional structure schematic diagram of the prior art rotor sealing structure;

[0021] Figure 2 is Figure 1 is a local enlarged schematic diagram of part A in

[0022] Figure 3 is a sectional structure schematic diagram of the rotor sealing structure in an embodiment of the present application;

[0023] Figure 4 is Figure 3 is a local enlarged schematic diagram of part B in

[0024] Reference signs: 1, rotor body; 2, sealing ring; 3, sealing O-ring; 4, outer ring; 5, installation groove; 6, flange. DETAILED DESCRIPTION

[0025] The exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to help understanding, and should be considered only as exemplary. Therefore, those skilled in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Also, for the sake of clarity and conciseness, the description below omits the description of well-known functions and structures.

[0026] It should be noted that the terms "first," "second," and the like in this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the disclosure described herein can be implemented in an order other than that illustrated or described herein. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present disclosure.

[0027] In this document, the term "and / or" simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document, unless otherwise specified, generally indicates an "or" relationship between the related objects.

[0028] A rotor sealing structure of the present application is described below with reference to the accompanying drawings.

[0029] like Figure 2 As shown, the rotor sealing structure includes a rotor body 1, a sealing ring 2, a sealing O-ring 3 and an outer ring 4. The sealing ring 2 is installed at the end of the rotor body 1. The outer edge of the sealing ring 2 is provided with a mounting groove 5 along its own circumference direction. The sealing O-ring 3 is arranged in the mounting groove 5 and extends outward from the sealing ring 2. The outer ring 4 is sleeved on the rotor body 1. The edge of the outer ring 4 is bent toward the end of the rotor body 1 by pressing and pressed against the sealing ring 2, so that a sealing structure is formed between the outer ring 4 and the rotor body 1, the sealing ring 2 and the sealing O-ring 3. Among them, unlike the traditional structure, during assembly, the staff can directly place the sealing O-ring 3 on the outer edge of the sealing ring 2. The sealing O-ring 3 is placed in the installation groove 5 without having to install the sealing ring 2 first and then place the sealing O-ring 3 separately. This can simplify the assembly process and reduce the gap between the sealing O-ring 3 and the surrounding structure to avoid invalid deformation, thereby improving the sealing effect. When the sealing O-ring 3 is placed in the installation groove 5 of the sealing ring 2, part of it extends out of the outside of the sealing ring 2. This design can provide the necessary sealing medium for the pressing edge of the outer ring 4 when the outer ring 4 is performing the pressing operation, so that the sealing O-ring 3 can only deform and move toward the outer edge of the outer ring 4 and the rotor body 1 when compressed, that is, increase the stress at the seal, thereby improving the sealing effect, and then increasing the service life of the water pump rotor.

[0030] Furthermore, the size and shape of the mounting groove 5 are adapted to the sealing O-ring 3 so that the sealing O-ring 3 and the sealing ring 2 can fit tightly during sealing, thereby increasing the stress at the sealing point and improving the sealing effect.

[0031] Preferably, the sealing ring 2 is provided with a flange 6 outwardly extending away from the side of the rotor body 1, and the edge of the outer ring 4 is bent and abuts against the flange 6 at the end of the rotor body 1 by means of edge pressing, and by providing the flange 6, an accurate abutting surface can be provided for the edge pressing operation of the edge of the outer ring 4, so as to improve the sealing efficiency, and the provision of the flange 6 increases the area of the sealing contact between the sealing ring 2 and the outer ring 4, so as to further improve the sealing effect.

[0032] Preferably, the thickness of the outer ring 4 is 0.1mm-0.3mm, by adopting the outer ring 4 with the thickness, the difficulty of edge pressing of the outer ring 4 can be reduced while ensuring the sealing performance, and compared with the conventional 0.5mm outer ring 4, the cost is lower and the processing efficiency is higher, and it should be noted that the conventional rotor sealing outer ring 4 is usually 0.5mm thick, which is thinned to 0.15mm in the embodiment, which makes the gap between the motor stator inner hole and the rotor outer edge smaller, specifically, to keep the gap between 0.2mm and 0.4mm, so as to increase the alternating magnetic flux generated by the motor stator and the rotor, so as to improve the motor efficiency and performance, and by reducing the thickness of the outer ring 4, the rotor resistance can be correspondingly reduced, so as to reduce the temperature of the motor in operation.

[0033] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A rotor sealing structure, characterized in that: include: Rotor body (1); A sealing ring (2), the sealing ring (2) being mounted on the end of the rotor body (1), and the outer edge of the sealing ring (2) being provided with a mounting groove (5) along its circumference; A sealing O-ring (3), the sealing O-ring (3) being arranged in the mounting groove (5) and extending outward from the sealing ring (2); An outer ring (4) is sleeved on the rotor body (1), and the edge of the outer ring (4) is bent toward the end of the rotor body (1) by pressing and pressed against the sealing ring (2), so that a sealing structure is formed between the outer ring (4) and the rotor body (1), the sealing ring (2) and the sealing O-ring (3).

2. A rotor sealing structure according to claim 1, characterized in that: The size and shape of the mounting groove (5) are compatible with the sealing O-ring (3).

3. A rotor sealing structure according to claim 1, characterized in that: A flange (6) is provided on a side of the sealing ring (2) extending outward away from the rotor body (1); the edge of the outer ring (4) is bent toward the end of the rotor body (1) by pressing and abuts against the flange (6).

4. A rotor sealing structure according to claim 1, characterized in that: The thickness of the outer ring (4) is 0.1 mm to 0.3 mm.

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