Composite sealing ring of motor main shaft

Abstract

The utility model relates to a composite sealing ring for a motor main shaft, which is characterized in that a motor main shaft body penetrates through a motor end cover, a first sealing ring is sleeved on the motor main shaft body, a limit groove is arranged at the edge of the first sealing ring, a mounting groove is arranged on the motor end cover, a fixing ring is arranged in the mounting groove, and the fixing ring is connected with the inner wall of the mounting groove through an extrusion spring. According to the utility model, the first sealing ring is embedded in the mounting groove on the motor end cover, so that the condition that the first sealing ring deviates during rotation is avoided, and the condition that the sealing rings deform is also effectively prevented; meanwhile, the first sealing ring can be in close contact with the second sealing ring due to the extrusion spring, compensation can be conducted in time after the sealing rings rotate and are abraded, and the situation of looseness caused by abrasion of the sealing rings is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a motor main shaft composite sealing ring belongs to sealing ring technical field. BACKGROUND

[0002] The rotor shaft and the end cover of the motor are usually sealed by adopting skeleton sealing and end face oil seal, which are both contact type sealing, wherein the skeleton sealing ring and the end cover mounting groove are connected through interference fit, the inner ring is designed with a sealing ring, and the sealing lip contacts the rotating shaft when the rotor shaft rotates to play a sealing role.

[0003] The sealing ring body is sleeved on the surface of the rotor shaft, and after the sealing ring body is installed at the specified position of the rotor shaft, the second main lip and the first main lip are made of rubber material, the elastic force of the rubber is utilized to make the second main lip and the first main lip tightly adhere to the surface of the rotor shaft, thereby effectively increasing the sealing effect of the sealing ring body, and the sealing effect of the sealing ring is further improved, and the failure rate of the motor during actual use is reduced, and the practicability of the sealing ring is improved. SUMMARY

[0004] In view of the problems in the related art, the utility model provides a motor main shaft composite sealing ring to overcome the above technical problems existing in the prior art.

[0005] Therefore, the utility model adopts the specific technical scheme as follows: a motor main shaft composite sealing ring, including motor end cover, the motor end cover is penetrated by motor main shaft body, the motor main shaft body is sleeved with first sealing ring, the first sealing ring edge is equipped with limiting groove, the motor end cover is equipped with installation groove, the installation groove is equipped with fixed ring, the fixed ring is connected with the installation groove inner wall through extrusion spring, the fixed ring is fixedly equipped with second sealing ring, and the second sealing ring contacts the first sealing ring, and the motor end cover left side is fixedly equipped with stop ring.

[0006] As further optimization, the first sealing ring inner wall is uniformly equipped with sealing groove, one side of the sealing groove is fixedly equipped with sealing protrusion, and the sealing protrusion is in close contact with the surface of the motor main shaft body.

[0007] As further optimization, the first sealing ring and the second sealing ring inner cavity are fixedly equipped with reinforcing strips, and the reinforcing strips are arranged in H-shaped cross section.

[0008] As a further optimization, the limit convex ring is fixed on the inner wall of the installation slot, the position of the limit convex ring corresponds to the limit recess, and the limit convex ring is embedded in the limit recess.

[0009] As a further optimization, the moving slot is uniformly arranged in the installation slot, the extrusion spring is fixed in the moving slot, and the stop block is fixed on the opening inner wall of the moving slot.

[0010] As a further optimization, the moving rod is fixed on the side of the fixed ring corresponding to the moving slot, the moving block is fixed at one end of the moving rod embedded in the moving slot, and the moving block is connected with the extrusion spring.

[0011] As a further optimization, the installation hole is arranged on the motor end cover corresponding to the stop ring, the connecting bolt is fixed in the installation hole, and the convex ring is fixed on one side of the stop ring.

[0012] As a further optimization, the position of the convex ring corresponds to the first sealing ring, and the first sealing ring is located between the convex ring and the second sealing ring.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The first sealing ring is sleeved on the motor main shaft body, the first sealing ring is embedded in the installation slot of the motor end cover, the limit convex ring in the installation slot is clamped into the limit recess, the offset of the first sealing ring during rotation is avoided, and the deformation of the sealing ring is effectively prevented.

[0015] 2. When the first sealing ring is embedded in the installation slot, the first sealing ring is in close contact with the second sealing ring, the fixed ring is extruded towards the installation slot, the sealing property of the contact part of the first sealing ring and the second sealing ring is ensured, and the relaxation caused by the wear of the sealing ring is effectively prevented. DRAWINGS

[0016] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, which is used to explain the utility model together with the specific implementation mode of the utility model, and does not constitute the limitation of the utility model.

[0017] Fig. 1 It is the whole structure schematic diagram of the utility model;

[0018] Fig. 2 It is the first sealing ring sectional structure schematic diagram of the utility model;

[0019] Fig. 3This is a schematic diagram of the mounting groove structure of this utility model;

[0020] Fig. 4 for Fig. 3 Enlarged view of point A in the middle;

[0021] The following are the labels in the diagram: 1. Motor end cover; 2. Motor spindle body; 3. First sealing ring; 4. Limiting groove; 5. Mounting groove; 6. Fixing ring; 7. Compression spring; 8. Second sealing ring; 9. Sealing groove; 10. Sealing protrusion; 11. Reinforcing strip; 12. Limiting protrusion ring; 13. Moving groove; 14. Moving rod; 15. Moving block; 16. Stop ring; 17. Mounting hole; 18. Protrusion ring. Detailed Implementation

[0022] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components. Example

[0023] like Figs. 1 to 4 As shown, a composite sealing ring for a motor spindle includes a motor end cover 1, a motor spindle body 2 extending through the motor end cover 1, a first sealing ring 3 fitted onto the motor spindle body 2, a limiting groove 4 formed at the edge of the first sealing ring 3, an installation groove 5 formed on the motor end cover 1, a fixing ring 6 provided in the installation groove 5, the fixing ring 6 being connected to the inner wall of the installation groove 5 by a compression spring 7, a second sealing ring 8 fixedly mounted on the fixing ring 6 and in contact with the first sealing ring 3, a stop ring 16 fixedly mounted on the left side of the motor end cover 1, and a dense seal ring 16 evenly formed on the inner wall of the first sealing ring 3. The sealing groove 9 has a sealing protrusion 10 fixed on one side, and the sealing protrusion 10 is in close contact with the surface of the motor spindle body 2. This can improve the tightness of the first sealing ring 3 on the motor spindle body 2, prevent the sealing ring from sliding randomly, and improve the sealing performance between the sealing ring and the motor spindle. The inner cavity of the first sealing ring 3 and the second sealing ring 8 is fixed with a reinforcing strip 11. The reinforcing strip 11 has an H-shaped cross section, which improves the strength of the sealing ring itself, prevents it from easily deforming during rotation, and also reduces the wear coefficient on both sides of the sealing ring, increasing the service life of the sealing ring. Example

[0024] like Figs. 1 to 4As shown, a composite sealing ring for a motor spindle has a limiting protrusion 12 fixedly provided on the inner wall of the mounting groove 5. The position of the limiting protrusion 12 corresponds to the limiting groove 4, and the limiting protrusion 12 is embedded in the limiting groove 4, which improves the sealing performance between the edge of the first sealing ring 3 and the inner wall of the mounting groove 5. At the same time, it also positions the first sealing ring 3 to prevent the first sealing ring 3 from being pushed by the fixing ring 6. The mounting groove 5 has evenly distributed moving grooves 13. The compression spring 7 is fixedly set in the moving groove 13. A stop block is fixedly provided on the inner wall of the opening of the moving groove 13. A moving rod 14 is fixedly provided on one side of the fixing ring 6 at the position corresponding to the moving groove 13. One end of the moving rod 14 is embedded in the moving groove 13 and a moving block 15 is fixedly provided. The moving block 15 is connected to the compression spring 7. During installation, the first sealing ring 3 will contact the second sealing ring 8 and squeeze the moving rod 14 on the fixing ring 6 into the moving groove 13, which will compress the compression spring 7. At the same time, the compression spring 7 will always compensate for the gap of the sealing ring wear, preventing the sealing ring from becoming loose. Example

[0025] like Figs. 1 to 4 As shown, a composite sealing ring for a motor spindle has mounting holes 17 on the motor end cover 1 and corresponding to the stop ring 16. Connecting bolts are fixed in the mounting holes 17. A protruding ring 18 is fixed on one side of the stop ring 16, and the position of the protruding ring 18 corresponds to the first sealing ring 3. The first sealing ring 3 is located between the protruding ring 18 and the second sealing ring 8. The stop ring 16 and the motor end cover 1 are fixedly connected by the connecting bolts and the mounting holes 17, thereby fixing the first sealing ring 3 in the mounting groove 5 through the protruding ring 18 to prevent the first sealing ring 3 from shifting during use.

[0026] In this invention, the first sealing ring 3 is fitted onto the motor spindle body 2 and embedded into the mounting groove 5 on the motor end cover 1. The limiting protrusion 12 in the mounting groove 5 will be engaged in the limiting groove 4, thereby preventing the first sealing ring 3 from shifting during rotation. Moreover, the first sealing ring 3 will be in close contact with the second sealing ring 8 and will press the fixing ring 6 into the mounting groove 5 to ensure the sealing at the contact point between the first sealing ring 3 and the second sealing ring 8. Furthermore, after the sealing ring wears out due to rotation, it will be compensated by the compression spring 7, effectively preventing the sealing ring from loosening due to wear.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite sealing ring for a motor spindle, comprising a motor end cover (1), characterized in that: The motor end cover (1) passes through the motor spindle body (2). A first sealing ring (3) is fitted on the motor spindle body (2). A limiting groove (4) is opened at the edge of the first sealing ring (3). An installation groove (5) is opened on the motor end cover (1). A fixing ring (6) is provided in the installation groove (5). The fixing ring (6) is connected to the inner wall of the installation groove (5) by a compression spring (7). A second sealing ring (8) is provided on the fixing ring (6), and the second sealing ring (8) is in contact with the first sealing ring (3). A stop ring (16) is fixedly provided on the left side of the motor end cover (1).

2. The composite sealing ring for a motor spindle according to claim 1, characterized in that: The first sealing ring (3) has a uniformly provided sealing groove (9) on its inner wall. Each side of the sealing groove (9) is provided with a sealing protrusion (10), and the sealing protrusion (10) is in close contact with the surface of the motor spindle body (2).

3. A composite sealing ring for a motor spindle according to claim 1 or 2, characterized in that: The inner cavities of the first sealing ring (3) and the second sealing ring (8) are provided with reinforcing strips (11), and the cross section of the reinforcing strips (11) is H-shaped.

4. The composite sealing ring for a motor spindle according to claim 1, characterized in that: The inner wall of the mounting groove (5) is provided with a limiting protrusion ring (12), the position of the limiting protrusion ring (12) corresponds to the limiting groove (4), and the limiting protrusion ring (12) is embedded in the limiting groove (4).

5. A composite sealing ring for a motor spindle according to claim 1 or 4, characterized in that: The mounting groove (5) is evenly provided with a moving groove (13), the compression spring (7) is provided in the moving groove (13), and a stop block is fixedly provided on the inner wall of the opening of the moving groove (13).

6. A composite sealing ring for a motor spindle according to claim 5, characterized in that: A moving rod (14) is provided on one side of the fixed ring (6) corresponding to the moving groove (13). One end of the moving rod (14) is embedded in the moving groove (13) and a moving block (15) is provided. The moving block (15) is connected to the compression spring (7).

7. The composite sealing ring for a motor spindle according to claim 1, characterized in that: Mounting holes (17) are provided on the motor end cover (1) and the stop ring (16) respectively. A connecting bolt is provided in the mounting hole (17), and a protruding ring (18) is provided on one side of the stop ring (16).

8. A composite sealing ring for a motor spindle according to claim 7, characterized in that: The position of the convex ring (18) corresponds to the first sealing ring (3), and the first sealing ring (3) is located between the convex ring (18) and the second sealing ring (8).

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