Improved conveying driving shaft sealing and buffering structure
The labyrinth seal buffer structure and inclined surface design solve the problems of poor sealing performance and easy wear in traditional conveying drive systems, achieve improved sealing effect and stable operation of the structure, and extend the service life of the equipment.
Patent Information
- Application Number
- CN202423146819.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The sealing and buffering structure of traditional conveying drive systems has problems such as poor sealing performance, limited buffering effect and easy wear, which leads to lubricating oil leakage and bearing damage, increasing equipment use costs and downtime.
A labyrinth seal buffer structure is adopted, combined with a bevel design and molybdenum disulfide coating. The labyrinth cover and the bearing cover are fixed by nuts to form a buffer gap, change the flow direction of the medium, reduce the friction coefficient, enhance the sealing effect and provide support protection.
It effectively prevents external impurities from invading and media leakage, absorbs shock and vibration, reduces bearing wear, extends service life, and improves sealing performance and structural stability.
Smart Images
Figure CN223434712U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical seals, in particular to an improved sealing buffer structure of a conveying drive shaft. Background Art
[0002] In existing conveying drive systems, the sealing and buffering structure of the drive shaft is one of the key components to ensure stable operation of the system. However, traditional sealing and buffering structures often have problems such as poor sealing performance, limited buffering effect, and easy wear. These problems not only affect the transmission efficiency of the system, but also lead to serious consequences such as lubricating oil leakage and bearing damage, increasing equipment usage costs and downtime. Utility Model Content
[0003] In order to solve some of the problems existing in the above-mentioned prior art, the utility model provides an improved sealing and buffering structure of a conveying drive shaft, which aims to effectively improve the sealing performance, enhance the buffering effect and prolong the service life.
[0004] To achieve the above-mentioned purpose, the utility model provides an improved conveying drive shaft sealing and buffering structure, including a main shaft and a drive shaft, one end of the main shaft is provided with a universal coupling, the other end of the main shaft is provided with a coupling and is connected to the drive shaft through the coupling; a bearing cover is installed on the outside of the main shaft, and a labyrinth sealing and buffering structure is provided on the outside of the bearing cover.
[0005] When the present invention is working, the driving shaft first receives the power from the power source and starts to rotate, and transmits the power to the main shaft through the coupling, so that the main shaft rotates accordingly. The universal coupling at one end of the main shaft can flexibly adjust the transmission angle according to the actual working conditions to ensure the stability of power transmission; during the rotation of the main shaft, the bearing cover plays a role in protecting and positioning the bearings on the main shaft to ensure the normal operation of the bearings; at the same time, the labyrinth sealing and buffering structure starts to work, and the labyrinth cover is tightly connected to the bearing cover through the nut fastening assembly, and the card-mounted bearing pressure cover and the labyrinth cover are engaged with each other to achieve axial and radial fixation of the bearing cover, thereby ensuring the stability of the structure during the operation of the equipment; when vibration or displacement occurs, the multiple first cams on the labyrinth cover The starting block cooperates with the second protrusion at the front end of the bearing cover to form a buffer gap, which effectively absorbs and buffers impact force and protects components from excessive wear; the inclined surface is at an angle of 45° to 60° to the horizontal plane, which changes the flow direction of the sealing medium when the main shaft rotates, forming a fluid dynamic pressure effect, and the molybdenum disulfide coating on the surface of the inclined surface reduces the friction coefficient, enhances the sealing effect, and prevents impurities from entering and medium leakage; in addition, the head end cover at the outer end of the main shaft is fixed by the head cover and connecting screws, further strengthening the sealing of the main shaft end; and the outer cover always provides protection and support for the main shaft and other internal components, avoiding external factors from interfering with the operation of the equipment, and ensuring the stable and efficient operation of the entire conveying drive shaft sealing and buffering structure.
[0006] The beneficial effects of the utility model are as follows: the utility model adopts a labyrinth-type sealing buffer structure, which effectively prevents the intrusion of external impurities and the leakage of the medium, thereby improving the sealing performance; at the same time, the buffer gap formed by the first protrusion block and the second protrusion block and the special design of the inclined surface effectively absorb and disperse the impact and vibration generated during the transmission process, thereby reducing the wear and damage risk of the bearing; in addition, the provision of the molybdenum disulfide coating enhances the wear resistance and self-lubrication of the inclined surface, thereby extending the service life.
[0007] As a further improvement of the present invention, in order to achieve stable installation and precise positioning of the labyrinth sealing buffer structure and improve the reliability and stability of the sealing structure; the labyrinth sealing buffer structure includes a labyrinth cover, which is provided with a nut fastening assembly and is connected and fixed to the bearing cover through the nut fastening assembly; a bearing pressure cover is clamped inside the labyrinth cover, and the bearing pressure cover and the labyrinth cover are engaged with each other to fix the bearing cover axially and radially.
[0008] As a further improvement of the present invention, in order to effectively buffer the impact force caused by vibration, displacement, etc., protect components from excessive wear, and at the same time enhance the sealing performance through the special layout of the protrusions to prevent the entry of impurities and leakage of media; a first protrusion is provided at the contact surface between the labyrinth cover and the bearing cover, and a plurality of first protrusions are provided; a second protrusion and an inclined surface are provided on the front end of the bearing cover, and the first protrusion and the second protrusion cooperate with each other to form a buffer gap.
[0009] As a further improvement of the present invention, in order to enhance the sealing effect of the main shaft end and ensure the stability and reliability of the structure, a head end cover is also provided at the outer end of the main shaft, and a head pressure cover is provided on the outer side of the head end cover; connecting screws are provided through the head pressure cover, and the head pressure cover is fixed and connected to the head end cover by the connecting screws.
[0010] As a further improvement of the present invention, in order to prevent external objects from causing collision damage to the internal structure and at the same time play a supporting role to maintain the stability of the entire structure; an outer cover is also provided on the outside of the main shaft, which provides protection and support.
[0011] As a further improvement of the present invention, in order to change the flow direction of the sealing medium when the drive shaft rotates, a fluid dynamic pressure effect is formed to enhance the sealing effect; at the same time, the molybdenum disulfide coating effectively reduces the friction coefficient at the inclined surface, reduces the resistance of the drive shaft during operation, reduces the wear of components, and extends the service life; the angle between the inclined surface and the horizontal plane is 45° to 60°, and the surface of the inclined surface is coated with a molybdenum disulfide coating. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings:
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0014] Figure 2 For the utility model Figure 1 Enlarged view of point A in the middle.
[0015] Among them, 1 main shaft, 2 nut fastening assembly, 3 head end cover, 4 head pressure cover, 5 outer cover, 6 universal joint, 7 bearing cover, 8 connecting screws, 9 coupling, 10 drive shaft, 11 labyrinth cover, 12 bearing pressure cover, 13 first raised block, 14 second raised block, 15 inclined surface, 16 molybdenum disulfide coating. DETAILED DESCRIPTION
[0016] like Figure 1-2 An improved conveying drive shaft sealing and buffering structure shown in the figure includes a main shaft 1 and a drive shaft 10, one end of the main shaft 1 is provided with a universal coupling 6, the other end of the main shaft 1 is provided with a coupling 9 and is connected to the drive shaft 10 through the coupling 9; a bearing cover 7 is installed on the outside of the main shaft 1, and a labyrinth sealing and buffering structure is provided on the outside of the bearing cover 7; the labyrinth sealing and buffering structure includes a labyrinth cover 11, a nut fastening assembly 2 is provided on the labyrinth cover 11 and is connected and fixed to the bearing cover 7 through the nut fastening assembly 2; a bearing pressure cover 12 is fixed inside the labyrinth cover 11, and the bearing pressure cover 12 and the labyrinth cover 11 are engaged with each other to fix the bearing cover 7 axially and radially; the labyrinth cover 11 is connected to the bearing cover 7 A first raised block 13 is provided at the contact surface of the bearing cover 12, and there are multiple first raised blocks 13; a second raised block 14 and a slope 15 are provided on the front end of the bearing cover 12, and the first raised block 13 and the second raised block 14 cooperate with each other to form a buffer gap; the outer end of the main shaft 1 is also provided with a head end cover 3, and the outer side of the head end cover 3 is provided with a head cover 4; the head cover 4 is penetrated by a connecting screw 8, and the head cover 4 is fixed and connected to the head end cover 3 by the connecting screw 8; the outside of the main shaft 1 is also provided with an outer cover 5, which provides protection and support; the angle between the slope 15 and the horizontal plane is 45°~60°, and the surface of the slope 15 is coated with a molybdenum disulfide coating 16.
[0017] When the present invention is working, the driving shaft 10 first receives the power from the power source and starts to rotate, and transmits the power to the main shaft 1 through the coupling 9, so that the main shaft 1 rotates accordingly. The universal coupling 6 at one end of the main shaft 1 can flexibly adjust the transmission angle according to the actual working conditions to ensure the stability of power transmission; during the rotation of the main shaft 1, the bearing cover 7 plays a role in protecting and positioning the bearings on the main shaft 1 to ensure the normal operation of the bearings; at the same time, the labyrinth sealing buffer structure starts to work, and the labyrinth cover 11 is tightly connected to the bearing cover 7 through the nut fastening assembly 2, and its card-mounted bearing pressure cover 12 is engaged with the labyrinth cover 11 to achieve axial and radial fixation of the bearing cover 7 to ensure the stability of the structure during equipment operation; when vibration or displacement occurs, the multiple first convex parts on the labyrinth cover 11 The lifting block 13 cooperates with the second protruding block 14 at the front end of the bearing cover 12 to form a buffer gap, which effectively absorbs and buffers impact force and protects components from excessive wear; the inclined surface 15 is at an angle of 45° to 60° to the horizontal plane, which changes the flow direction of the sealing medium when the main shaft 1 rotates, forming a fluid dynamic pressure effect, and the molybdenum disulfide coating 16 on the surface of the inclined surface 15 reduces the friction coefficient, enhances the sealing effect, and prevents impurities from entering and medium leakage; in addition, the head end cover 3 at the outer end of the main shaft 1 is fixed by the head cover 4 and the connecting screws 8, further strengthening the sealing of the end of the main shaft 1; and the outer cover 5 always provides protection and support for the main shaft 1 and other internal components, avoiding external factors from interfering with the operation of the equipment, and ensuring the stable and efficient operation of the entire conveying drive shaft sealing buffer structure.
[0018] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.
Claims
1. An improved conveying drive shaft sealing and buffering structure, comprising a main shaft (1) and a drive shaft (10), characterized in that: One end of the main shaft (1) is provided with a universal coupling (6), and the other end of the main shaft (1) is provided with a coupling (9) and is connected to a drive shaft (10) via the coupling (9); a bearing cover (7) is installed on the outside of the main shaft (1), and a labyrinth-type sealing buffer structure is provided on the outside of the bearing cover (7).
2. The improved conveying drive shaft sealing and buffering structure according to claim 1, characterized in that: The labyrinth sealing buffer structure comprises a labyrinth cover (11), wherein a nut fastening assembly (2) is provided on the labyrinth cover (11) and is connected and fixed to the bearing cover (7) via the nut fastening assembly (2); a bearing pressure cover (12) is clamped inside the labyrinth cover (11), and the bearing pressure cover (12) and the labyrinth cover (11) are engaged with each other to fix the bearing cover (7) axially and radially.
3. The improved conveying drive shaft sealing and buffering structure according to claim 2, characterized in that: A first protrusion (13) is provided on the contact surface between the labyrinth cover (11) and the bearing cover (12), and a plurality of the first protrusions (13) are provided; a second protrusion (14) and an inclined surface (15) are provided on the front end of the bearing cover (12), and the first protrusion (13) and the second protrusion (14) cooperate with each other to form a buffer gap.
4. The improved sealing and buffering structure of the conveying drive shaft according to claim 1, characterized in that: The outer end of the main shaft (1) is further provided with a head cover (3), and the outer side of the head cover (3) is provided with a head gland (4); the head gland (4) is penetrated by a connecting screw (8), and the head gland (4) is fixed and connected to the head cover (3) by the connecting screw (8).
5. The improved sealing and buffering structure of the conveying drive shaft according to claim 1, characterized in that: An outer cover (5) is further provided on the outside of the main shaft (1), and the outer cover (5) provides protection and support.
6. The improved sealing and buffering structure of the conveying drive shaft according to claim 3, characterized in that: The angle between the inclined surface (15) and the horizontal plane is 45° to 60°, and the surface of the inclined surface (15) is coated with a molybdenum disulfide coating (16).