Maintenance-free magnetic driving device
By combining an inner magnet mounting sleeve and a modified material sealing structure, the problem of grease leakage during the pressurization and depressurization process of the magnetic drive device is solved, achieving a production environment with low maintenance costs and no contaminants.
Patent Information
- Application Number
- CN202521100941.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-05-30
AI Technical Summary
Existing magnetic drive devices are prone to grease leakage during pressurization and depressurization, resulting in high maintenance costs and material contamination.
The bearing employs a sealing structure consisting of an inner magnet mounting sleeve, an upper sealing end cap, a sealing connection seat, and Glyd rings and O-rings. This, combined with an outer fixed sleeve and inner sliding sleeve made of modified PTFE and modified PEEK materials, achieves sealed protection and prevents grease leakage.
It reduces maintenance costs, prevents grease from entering materials, and ensures cleanliness in the production process.
Smart Images
Figure CN223725331U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to magnetic drive device especially relates to a maintenance -free magnetic drive device. BACKGROUND
[0002] Magnetic drive device is a kind of equipment using magnetic force to drive, the existing magnetic drive device includes mounting seat, shell body, outer magnetic steel, sealing cover body, inner magnetic steel, support sleeve, output shaft, speed reducer and motor, the middle part of mounting seat is equipped with (upper and lower through) mounting hole, shell body is sleeve-like, fixedly installed on the upper side of mounting seat outside mounting hole, upper bearing seat is installed on the upper end of shell body, outer magnetic steel transmission shaft is installed in bearing in upper bearing seat, outer magnetic steel mounting sleeve is installed on the lower end of outer magnetic steel transmission shaft in shell body, outer magnetic steel is installed on the inner side of outer magnetic steel mounting sleeve, the sealing cover body is sleeve-like and sealed at the upper end, sealing cover body is installed above the mounting hole in the middle part of mounting seat, sealing cover body upper part is located on the inner side of outer magnetic steel, the lower side of mounting seat below mounting hole is equipped with support body, the support sleeve is fixedly installed on the upper side of support body in the inner side of sealing cover body, upper bearing seat is equipped on the upper end of inner support sleeve, lower bearing seat is equipped at the opposite place of upper bearing seat on support body, the output shaft is installed on upper bearing seat and lower bearing seat through upper bearing and lower bearing, bearing oil injection hole is respectively equipped on upper bearing seat and lower bearing seat;Inner magnetic steel mounting sleeve is installed on the upper end of output shaft through connecting seat above upper bearing, and inner magnetic steel is installed on the opposite place of outer magnetic steel in inner magnetic steel mounting sleeve and cooperates with it;The motor is fixedly installed on upper bearing seat through speed reducer, and the output shaft of motor is connected with outer magnetic steel transmission shaft through speed reduction motor. The existing magnetic drive device is widely used in chemical industry, pharmacy, environmental protection, food processing, metallurgy and other fields, and the lubricating grease for bearing lubrication is washed out due to frequent pressure charging and pressure releasing in production process, so it is necessary to frequently add lubricating grease, which increases a large amount of maintenance cost, and the washed-out lubricating grease enters material, which causes material pollution. UTILIZY MODEL CONTENT
[0003] The utility model aims at solving the insufficient of prior art, provide a maintenance cost low, do not contaminate material's maintenance -free magnetic drive device.
[0004] The technical scheme of the utility model is:
[0005] The utility model discloses a maintenance -free magnetic force drive device, its characterized in that, including mounting seat, outer shell, outer magnetic steel, inner magnetic steel axle, inner magnetic steel, output shaft, speed reducer and motor, the middle part of mounting seat is equipped with mounting hole, the outer shell is sleeve -shaped, fixed mounting on the upper side of mounting seat outside the mounting hole, the upper bearing seat is installed on the upper end of outer shell, and the outer magnetic steel transmission shaft is installed in the upper bearing seat, and the lower end of outer magnetic steel transmission shaft in the outer shell is installed on outer magnetic steel mounting sleeve, and the inner side of outer magnetic steel mounting sleeve is installed on the outer magnetic steel, and the upper side of mounting seat outside the mounting hole is equipped with sealing support cover, and the upper part of sealing support cover is located in the inner side of outer magnetic steel, the inner magnetic steel axle is arranged in sealing support cover, and the upper end of inner magnetic steel axle is fixedly connected with the upper end middle part of sealing support cover, and the upper bearing and lower bearing are installed on the inner magnetic steel mounting sleeve of inner magnetic steel axle, and the inner magnetic steel is installed on the inner magnetic steel mounting sleeve, the upper sealing end cover is installed on the upper magnetic steel mounting sleeve of upper bearing, and the upper sealing end cover is equipped with gasket between inner magnetic steel axle, and the O type ring is equipped between the upper end of upper sealing end cover and inner magnetic steel mounting sleeve, the sealing connecting seat is installed on the lower end of inner magnetic steel mounting sleeve below the inner magnetic steel axle, and the O type ring is equipped between sealing connecting seat and inner magnetic steel mounting sleeve, and the output shaft is installed in the mounting hole below sealing connecting seat through the shaft sleeve, and the output shaft is fixedly connected with the lower end of sealing connecting seat, the motor is fixedly installed on the upper bearing seat through the speed reducer, and the output shaft of motor is connected with outer magnetic steel transmission shaft through the speed reducer.
[0006] The utility model further improves, the upper end of sealing support cover is equipped with connecting assembly hole, the upper end of inner magnetic steel axle is equipped with the plug -in section with connecting assembly hole cooperation, the plug -in section lower part is equipped with the tensioning portion that diameter gradually increases from top to bottom, the plug -in section is inserted into its by connecting assembly hole downside, the upper side of sealing support cover outside connecting assembly hole is equipped with annular stop washer, the upper side of stop washer is equipped with upper gland, and the upper gland middle part is equipped with the screw for with plug -in section upper end department fastening connection, the plug -in section and connecting assembly hole inner wall between be equipped with O type ring.The assembly of inner magnetic steel axle is simple, convenient.
[0007] The side wall of the shell body is provided with a cooling cavity, and the cooling cavity is provided with a cooling water inlet and a cooling water outlet.
[0008] The utility model discloses a outer magnetic steel transmission axle is the output coupling that cooperates and connects with speed reducer output shaft.Output coupling includes connecting sleeve and output disc, and connecting sleeve is fixedly connected with the output shaft of speed reducer, the output disc sets up at the lower end of connecting sleeve, and the upper end of outer magnetic steel mounting sleeve is fixedly connected with output disc through bolt.The connecting structure is simple, compact.
[0009] The shaft sleeve comprises an outer fixed sleeve and an inner sliding sleeve, the outer fixed sleeve is fixedly connected with the mounting base, the inner sliding sleeve is rotatably installed in the outer fixed sleeve, and the output shaft is installed in the inner sliding sleeve.
[0010] In use, the mounting base is connected with the shell of the driven device, the output shaft is connected with the power input shaft of the driven rotating shaft, and power is provided for the driven device. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 is a structural schematic view of the utility model;
[0012] Figure 2 is Figure 1 is an A local enlarged view of
[0013] Figure 3 is Figure 1 is a B local enlarged view of DETAILED DESCRIPTION
[0014] As Figures 1-3The maintenance-free magnetic drive device shown includes a mounting base 15, a housing 6, an outer magnet 16, an inner magnet shaft 17, an inner magnet 8, an output shaft 13, a reducer 2, and a motor 1. The mounting base 15 has a through mounting hole in the middle. The housing 6 is sleeve-shaped and fixedly mounted on the upper side of the mounting base outside the mounting hole. The side wall of the housing 6 has a cooling chamber 7. The cooling chamber 7 has a cooling water inlet 18 and a cooling water outlet 5. During use, cooling water flows in through the cooling water inlet 18 and flows out through the cooling water outlet 5 to cool the outer housing and reduce the operating temperature. An upper bearing seat 4 is fixedly installed on the upper end of the outer casing 6. An external magnet drive shaft is installed inside the upper bearing seat 4 via a bearing 23. In this embodiment, the external magnet drive shaft is an output coupling. The output coupling includes a connecting sleeve 3 and an output disc 28. The output disc 28 is located at the lower end of the connecting sleeve 3. An external magnet mounting sleeve 20 is installed on the lower side of the output disc 28 of the output coupling inside the outer casing. The upper end of the external magnet mounting sleeve 20 is fixedly connected to the output disc 28 by bolts. An external magnet 16 is installed on the inner side of the external magnet mounting sleeve 20. A sealing support cover 9, integrally formed with the mounting seat, is provided on the upper side of the mounting base 15 outside the mounting hole. The sealing support cover 9 is located inside the external magnet 16. An inner magnet shaft 17 is located inside the sealing support cover 9. The upper end of the inner magnet shaft 17 is sealed and fixedly connected to the middle of the upper end of the sealing support cover 9. Figure 1 , Figure 2 As can be seen, the upper end of the sealing support cover 9 is provided with a connecting assembly hole, and the upper end of the inner magnet shaft 17 is provided with an insertion section that mates with the connecting assembly hole. The lower part of the insertion section is provided with a tensioning part whose diameter gradually increases from top to bottom. The insertion section is inserted into the connecting assembly hole from the lower side. An annular stop pad 26 is provided on the upper side of the sealing support cover 9 outside the connecting assembly hole. An upper pressure cover 27 is provided on the upper side of the stop pad 26. A screw 22 for fastening the upper end of the insertion section is provided in the middle of the upper pressure cover 17. An O-ring is provided between the insertion section and the inner wall of the connecting assembly hole to achieve a static sealing connection. The assembly between the inner magnet shaft and the sealing support cover 9 is simple and convenient. An inner magnet mounting sleeve 10, which can rotate freely, is installed on the inner magnet shaft 17 via an upper bearing 19 and a lower bearing 11. Figure 2 , Figure 3As can be seen, the upper bearing 19 and the lower bearing 11 respectively include two bearings, and operation is more stable. The inner magnetic steel 8 is installed on the inner magnetic steel mounting sleeve 10, and the inner magnetic steel is opposite to the outer magnetic steel; the upper sealing end cover 21 is installed on the upper end of the inner magnetic steel mounting sleeve 10 above the upper bearing 19, and the gasket 25 is arranged between the upper sealing end cover 21 and the inner magnetic steel shaft 17; the sealing connecting seat 12 is installed on the lower end of the inner magnetic steel mounting sleeve 10 below the inner magnetic steel shaft 17, and the O-shaped ring 29 is arranged between the sealing connecting seat 12 and the inner magnetic steel mounting sleeve 10; the output shaft 13 is installed in the mounting hole below the sealing connecting seat 12 through the shaft sleeve, and the upper end of the output shaft 13 is integrated with the sealing connecting seat 12; the motor 1 is fixedly installed on the upper bearing seat 4 through the speed reducer 2, and the output shaft of the motor 1 is connected with the connecting sleeve 3 of the output shaft through the speed reducer.
[0015] Further improvement, the shaft sleeve includes an outer fixed sleeve 14 and an inner sliding sleeve 30, the outer fixed sleeve 15 is fixedly connected with the mounting seat 15 through the connecting seat and the pressing disc, and the inner sliding sleeve 30 is rotatably installed in the outer fixed sleeve 14, and the output shaft 13 is installed in the inner sliding sleeve 30. The material of the inner sliding sleeve is modified PTFE, modified PEEK or other low-friction coefficient and high-wear-resistance materials; the combination structure of the outer fixed sleeve and the inner sliding sleeve is adopted at the output shaft, so that the use of lubricating grease is avoided.
[0016] In use, the mounting seat is connected with the shell of the driven device, the output shaft is connected with the power input shaft of the driven shaft, and power is provided for the driven device. When used in an environment requiring pressure charging and pressure releasing in the production process, the inner magnetic steel mounting sleeve, the upper sealing end cover, the sealing connecting seat and the gasket and the O-shaped ring are matched, so that the upper bearing and the lower bearing installed on the inner magnetic steel shaft are in a sealed state, and the lubricating grease of the bearing is sealed and protected, the lubricating grease is not leaked due to pressure charging and pressure releasing, the maintenance cost is reduced, and the lubricating grease is prevented from entering the material.
Claims
1. A maintenance-free magnetic drive device, characterized in that, The system includes a mounting base, an outer casing, an outer magnet, an inner magnet shaft, an inner magnet, an output shaft, a reducer, and a motor. The mounting base has a mounting hole in the middle. The outer casing is sleeve-shaped and fixedly mounted on the upper side of the mounting base outside the mounting hole. An upper bearing seat is mounted on the upper end of the outer casing, and the outer magnet drive shaft is mounted inside the upper bearing seat via a bearing. An outer magnet mounting sleeve is mounted on the lower end of the outer magnet drive shaft inside the outer casing. The outer magnet is mounted on the inner side of the outer magnet mounting sleeve. A sealing support cover is provided on the upper side of the mounting base outside the mounting hole. The upper part of the sealing support cover is located inside the outer magnet. The inner magnet shaft is disposed inside the sealing support cover, and its upper end is sealed and fixedly connected to the middle of the upper end of the sealing support cover. An inner magnet mounting sleeve is installed on the steel shaft via an inner upper bearing and a lower bearing. The inner magnet is mounted on the inner magnet mounting sleeve. An upper sealing end cover is installed on the inner magnet mounting sleeve above the upper bearing. A Gladwell ring is provided between the upper sealing end cover and the inner magnet shaft. An O-ring is provided between the upper sealing end cover and the upper end of the inner magnet mounting sleeve. A sealing connecting seat is installed on the lower end of the inner magnet mounting sleeve below the inner magnet shaft. An O-ring is provided between the sealing connecting seat and the inner magnet mounting sleeve. The output shaft is installed in the mounting hole below the sealing connecting seat via a bushing. The upper end of the output shaft is fixedly connected to the lower end of the sealing connecting seat. The motor is fixedly mounted on the upper bearing seat via a reducer. The output shaft of the motor is connected to the outer magnet drive shaft via the reducer.
2. The maintenance-free magnetic drive device according to claim 1, characterized in that, The upper end of the sealing support cover is provided with a connection assembly hole, and the upper end of the inner magnet shaft is provided with a plug section that mates with the connection assembly hole. The lower part of the plug section is provided with a tensioning part whose diameter gradually increases from top to bottom. The plug section is inserted into the lower side of the connection assembly hole. The upper side of the sealing support cover outside the connection assembly hole is provided with an annular stop pad, and the upper side of the stop pad is provided with an upper pressure cover. The middle part of the upper pressure cover is provided with a screw for fastening to the upper end of the plug section. An O-ring is provided between the plug section and the inner wall of the connection assembly hole.
3. The maintenance-free magnetic drive device according to claim 1, characterized in that, The outer casing has a cooling cavity inside its side wall, and the cooling cavity has a cooling water inlet and a cooling water outlet.
4. The maintenance-free magnetic drive device according to claim 1, characterized in that, The external magnet drive shaft is an output coupling that is connected to the output shaft of the reducer. The output coupling includes a connecting sleeve and an output disc. The connecting sleeve is fixedly connected to the output shaft of the reducer. The output disc is located at the lower end of the connecting sleeve. The upper end of the external magnet mounting sleeve is fixedly connected to the output disc by bolts.
5. The maintenance-free magnetic drive device according to claim 1, characterized in that, The bushing includes an outer fixed sleeve and an inner sliding sleeve. The outer fixed sleeve is fixedly connected to the mounting base, and the inner sliding sleeve is rotatably installed inside the outer fixed sleeve. The output shaft is installed inside the inner sliding sleeve.