Sealing structure for motor

Abstract

The utility model discloses a sealing structure for a motor, which comprises the motor, the output end of the motor is fixedly connected with a driving shaft, the front end of the motor is provided with a sealing gasket, the sealing gasket is sleeved with the driving shaft, the side end of the motor is sleeved with a sealing ring, the rear end of the sealing ring is sleeved with a rear sealing cover, and the front end of the sealing ring is sleeved with a front sealing cover. The front end of the front sealing cover is fixedly connected with a first mounting ring; and the shaft sleeve is sleeved with the driving shaft, the rear end of the shaft sleeve abuts against the front end of the sealing gasket, the side end of the shaft sleeve is fixedly connected with a second mounting ring, and the second mounting ring is fixedly connected with the first mounting ring through a bolt. The sealing ring, the sealing gasket, the rear sealing cover, the front sealing cover and the shaft sleeve form an omnibearing sealing structure, and the omnibearing sealing structure has a larger sealing surface and a good sealing effect; the rear sealing cover, the annular groove, the front sealing cover, the clamping ring, the shaft sleeve, the mounting ring and the bolt form an assembly butt joint structure, the structure is tight and firm, disassembly and assembly are convenient, and overhaul and maintenance of an internal motor are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of motor sealing, in particular to a sealing structure for a motor. Background Art

[0002] When sealing the motor, the sealing surface formed between the existing motor and the sealing structure is insufficient, which is insufficient for a stable seal and has limited sealing performance. The sealing structure also has a complex assembly structure and is difficult to disassemble, hindering the inspection and maintenance of the internal motor. A Chinese patent application, CN202120632275.2, discloses a "sealing structure for a hydro-turbine generator set." The structure comprises a first frame and a second frame, wherein the first frame is positioned above the second frame and is in contact with the second frame. The connection between the first and second frames is provided with a first annular groove and a second annular groove. The first annular groove is located near the rotating shaft, and the second annular groove is located near the edge of the connection between the first and second frames. A first sealing ring is located within the first annular groove, and a second sealing ring is located within the second annular groove. The diameter of the first sealing ring is smaller than that of the second sealing ring. A sealing strip is provided at the bottom of the second frame where it connects to the rotating shaft. This solves the problem of lubricating oil easily leaking from the seal between the first and second frames of existing hydro-turbine generator sets. However, the sealing surface of the sealing structure is insufficient, which is not conducive to stable sealing; the assembly structure of the sealing structure is complex and inconvenient to disassemble and assemble, which is not conducive to the inspection and maintenance of the motor. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a sealing structure for a motor, which comprises an all-round sealing structure composed of a sealing ring, a sealing gasket, a rear sealing cover, a front sealing cover and a shaft sleeve, and has a large sealing surface and a good sealing effect; the sealing structure is composed of an assembly docking structure composed of a rear sealing cover, an annular groove, a front sealing cover, a retaining ring, a shaft sleeve, a mounting ring and bolts, and has a tight and firm structure, is easy to assemble and disassemble, and is conducive to the inspection and maintenance of the internal motor.

[0004] The utility model also provides a sealing structure for a motor as described above, comprising: a motor, wherein the output end of the motor is fixedly connected to a drive shaft, a sealing gasket is provided at the front end of the motor, the sealing gasket is sleeved on the drive shaft, the side end of the motor is sleeved on a sealing ring, the rear end of the sealing ring is sleeved on a rear sealing cover, the front end of the sealing ring is sleeved on a front sealing cover, and the front end of the front sealing cover is fixedly connected to a first mounting ring; a shaft sleeve, wherein the shaft sleeve is sleeved on the drive shaft, the rear end of the shaft sleeve abuts against the front end of the sealing gasket, the side end of the shaft sleeve is fixedly connected to a second mounting ring, and the second mounting ring is fixedly connected to the first mounting ring by bolts.

[0005] According to the sealing structure for a motor described in the utility model, the inner side wall of the sealing ring abuts against the side end of the sealing gasket, making the structure compact and tight.

[0006] According to the sealing structure for a motor described in the utility model, the rear end of the sealing ring abuts against the rear inner wall of the rear sealing cover, making the structure compact and tight. The front end of the sealing ring abuts against the front inner wall of the front sealing cover, making the structure compact and tight.

[0007] According to the sealing structure for a motor described in the present invention, the front end of the rear sealing cover abuts against the rear end of the front sealing cover, making the structure compact and tight. The front end of the rear sealing cover is provided with an annular groove, which is conducive to the stable docking of the sealing covers.

[0008] According to the sealing structure for a motor described in the present invention, a retaining ring is provided at the rear end of the front sealing cover, which is conducive to the stable docking of the sealing cover. The retaining ring is engaged with the ring groove, which is conducive to the stable docking of the sealing cover.

[0009] According to the sealing structure for a motor described in the utility model, the shaft sleeve is sleeved with the first mounting ring, making the structure compact and tight. The shaft sleeve is sleeved with the front sealing cover, making the structure compact and tight.

[0010] According to the sealing structure for a motor described in the utility model, a first threaded hole is provided in the first mounting ring to facilitate the installation of the bolts.

[0011] According to the sealing structure for a motor described in the present invention, a second threaded hole is provided in the second mounting ring to facilitate the installation of bolts. The rear end of the second mounting ring abuts against the front end of the first mounting ring, making the structure compact and tight.

[0012] Beneficial effects

[0013] 1. Compared with the existing technology, this sealing structure for the motor is composed of a sealing ring, a sealing gasket, a rear sealing cover, a front sealing cover and a shaft sleeve to form an all-round sealing structure. This structure has a larger sealing surface and a good sealing effect.

[0014] 2. Compared with the existing technology, this sealing structure for the motor has an assembly docking structure composed of a rear sealing cover, a ring groove, a front sealing cover, a retaining ring, a shaft sleeve, a mounting ring and bolts. The structure is tight and firm, easy to assemble and disassemble, and is conducive to the inspection and maintenance of the internal motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the exploded structure of a sealing structure for a motor according to the present invention;

[0017] Figure 2 This is a structural schematic diagram of a sealing structure for a motor according to the present invention;

[0018] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of a sealing structure for a motor according to the present invention;

[0019] Figure 4 The figure is a schematic diagram of the transverse cross-sectional structure of a sealing structure for a motor according to the present invention.

[0020] Legend:

[0021] 1. Motor; 2. Sealing ring; 3. Rear sealing cover; 4. Ring groove; 5. Sealing gasket; 6. Front sealing cover; 7. Second mounting ring; 8. Bolt; 9. Bushing; 10. First threaded hole; 11. First mounting ring; 12. Snap ring; 13. Drive shaft; 14. Second threaded hole. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0023] Reference Figure 1-4 The embodiment of the utility model is a sealing structure for a motor, which includes: a motor 1, the output end of the motor 1 is fixedly connected to a drive shaft 13 for transmission, a sealing gasket 5 is provided at the front end of the motor 1 to seal the motor, the sealing gasket 5 is sleeved with the drive shaft 13 to form a compact and tight structure, the side end of the motor 1 is sleeved with a sealing ring 2 to seal the motor, the side inner wall of the sealing ring 2 abuts against the side end of the sealing gasket 5 to form a compact and tight structure, the rear end of the sealing ring 2 is sleeved with a rear sealing cover 3 to seal the motor, the front end of the sealing ring 2 is sleeved with a front sealing cover 6 to seal the motor, and the front sealing cover 6 The front end is fixedly connected with a first mounting ring 11 for docking and fixing. A first threaded hole 10 is provided in the first mounting ring 11 for mounting bolts. The rear end of the sealing ring 2 abuts against the rear inner wall of the rear sealing cover 3 to form a compact and tight structure. The front end of the sealing ring 2 abuts against the front inner wall of the front sealing cover 6 to form a compact and tight structure. The front end of the rear sealing cover 3 abuts against the rear end of the front sealing cover 6 to form a compact and tight structure. The front end of the rear sealing cover 3 is provided with a ring groove 4 for clamping with a snap ring. The rear end of the front sealing cover 6 is provided with a snap ring 12 for clamping with the ring groove. The snap ring 12 is clamped with the ring groove 4 to form a clamping structure.

[0024] The shaft sleeve 9 is sleeved with the drive shaft 13 to form a compact and tight structure. The rear end of the shaft sleeve 9 is in contact with the front end of the sealing gasket 5 to form a compact and tight structure. The shaft sleeve 9 is sleeved with the first mounting ring 11 to form a compact and tight structure. The shaft sleeve 9 is sleeved with the front sealing cover 6 to form a compact and tight structure. The side end of the shaft sleeve 9 is fixedly connected with the second mounting ring 7 for docking and fixing. A second threaded hole 14 is provided in the second mounting ring 7 for mounting bolts. The rear end of the second mounting ring 7 is in contact with the front end of the first mounting ring 11 to form a compact and tight structure. The second mounting ring 7 is fixedly connected to the first mounting ring 11 by bolts 8 to form a firm structure.

[0025] Working principle: The motor is sealed using a sealing structure for the motor, a sealing gasket 5 is installed at the front end of the motor 1, a sealing ring 2 is installed at the side end of the motor 1, a rear sealing cover 3 is installed at the rear end of the sealing ring 2, a front sealing cover 6 is installed at the front end of the sealing ring 2, the annular groove 4 at the front end of the rear sealing cover 3 and the retaining ring 12 at the rear end of the front sealing cover 6 are clamped together for stable assembly, a shaft sleeve 9 is installed at the front end of the front sealing cover 6, and a compact and tight sealing structure is formed by docking and fixing the first mounting ring 11 at the front end of the front sealing cover 6 with the second mounting ring 7 at the side end of the shaft sleeve 9.

[0026] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A sealing structure for a motor, characterized in that: include: A motor (1), wherein the output end of the motor (1) is fixedly connected to a drive shaft (13), a sealing gasket (5) is provided at the front end of the motor (1), the sealing gasket (5) is sleeved with the drive shaft (13), a side end of the motor (1) is sleeved with a sealing ring (2), a rear end of the sealing ring (2) is sleeved with a rear sealing cover (3), a front end of the sealing ring (2) is sleeved with a front sealing cover (6), and a front end of the front sealing cover (6) is fixedly connected to a first mounting ring (11); A shaft sleeve (9) is sleeved with a drive shaft (13), a rear end of the shaft sleeve (9) is in contact with a front end of a sealing gasket (5), a side end of the shaft sleeve (9) is fixedly connected to a second mounting ring (7), and the second mounting ring (7) is fixedly connected to the first mounting ring (11) via a bolt (8).

2. A sealing structure for a motor according to claim 1, characterized in that: The inner side wall of the sealing ring (2) abuts against the side end of the sealing gasket (5).

3. The sealing structure for a motor according to claim 1, characterized in that: The rear end of the sealing ring (2) abuts against the rear inner wall of the rear sealing cover (3), and the front end of the sealing ring (2) abuts against the front inner wall of the front sealing cover (6).

4. The sealing structure for a motor according to claim 1, characterized in that: The front end of the rear sealing cover (3) abuts against the rear end of the front sealing cover (6), and the front end of the rear sealing cover (3) is provided with an annular groove (4).

5. The sealing structure for a motor according to claim 1, characterized in that: A snap ring (12) is provided at the rear end of the front sealing cover (6), and the snap ring (12) is snap-connected with the ring groove (4).

6. The sealing structure for a motor according to claim 1, characterized in that: The shaft sleeve (9) is sleeved with the first mounting ring (11), and the shaft sleeve (9) is sleeved with the front sealing cover (6).

7. The sealing structure for a motor according to claim 1, characterized in that: A first threaded hole (10) is provided in the first mounting ring (11).

8. The sealing structure for a motor according to claim 1, characterized in that: A second threaded hole (14) is provided in the second mounting ring (7), and the rear end of the second mounting ring (7) abuts against the front end of the first mounting ring (11).

Images