CN213541282U - Sealing mechanism for lower bearing device of main shaft of pulverizer - Google Patents
Sealing mechanism for lower bearing device of main shaft of pulverizer Download PDFInfo
- Publication number
- CN213541282U CN213541282U CN202022494461.2U CN202022494461U CN213541282U CN 213541282 U CN213541282 U CN 213541282U CN 202022494461 U CN202022494461 U CN 202022494461U CN 213541282 U CN213541282 U CN 213541282U
- Authority
- CN
- China
- Prior art keywords
- axle sleeve
- main shaft
- shaft sleeve
- shaft
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sealing Devices (AREA)
- Crushing And Grinding (AREA)
Abstract
The utility model discloses a supporting device sealing mechanism under milling machine main shaft, including rising tightly carry out synchronous pivoted axle sleeve, axle sleeve nut, O type circle and locate the seal assembly between bearing cover and the axle sleeve on the main shaft, the seal ring groove that holding O type circle was seted up on axle sleeve inner wall upper portion, outer wall lower part are equipped with the external screw thread, axle sleeve nut 6 fits on axle sleeve 4 through the internal thread soon. The utility model discloses seal structure is more reliable and more stable, can also effectively avoid the oil leak hidden danger that causes in the assembling process.
Description
Technical Field
The utility model relates to an internal mechanism of milling machine specifically is a bearing arrangement sealing mechanism under milling machine main shaft.
Background
The traditional support structure for the main shaft of a pulverizer employs upper and lower support devices that are located on the lower portion of a central spindle frame within the pulverizer. The lower bearing device comprises an upper bearing and a lower bearing which are arranged in a lower bearing position of the central shaft frame, the upper bearing and the lower bearing are axially limited by a bearing gland at the bottom of the lower bearing position of the central shaft frame, and a sealing mechanism is arranged between the bearing gland and the main shaft of the pulverizer in order to prevent oil leakage.
Application number 201621080526's utility model discloses a supporting seal device under milling machine main shaft adopts the axle sleeve to keep apart bearing cap and milling machine main shaft, has avoided the damage of milling machine main shaft, nevertheless still has following problem: 1. in order to facilitate the removal of the shaft sleeve, the shaft sleeve and the main shaft are in transition fit, and the risk of oil leakage in a gap possibly exists; 2. the shaft coupling is interference fit with the main shaft, and hot charging must be adopted during installation, if the shaft coupling cools down very fast in the installation, then can lead to the installation not in place (not totally with the axle sleeve laminating top tight), after equipment operation a period, the axle sleeve probably appears shifting or gliding because of the vibration, leads to the oil leak between axle sleeve and the main shaft.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bearing device sealing mechanism under milling machine main shaft that seal structure is more reliable and more stable, can effectively avoid the oil leak to be not enough to prior art.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the sealing mechanism of the lower supporting device of the main shaft of the flour mill comprises a shaft sleeve, a shaft sleeve nut, an O-shaped ring and a sealing assembly, wherein the shaft sleeve, the shaft sleeve nut and the O-shaped ring are tightly tensioned on the main shaft to synchronously rotate, the sealing assembly is arranged between a bearing gland and the shaft sleeve, a sealing ring groove for accommodating the O-shaped ring is formed in the upper portion of the inner wall of the shaft sleeve, external threads are formed in the lower portion of the outer wall of.
Above-mentioned scheme is preferred, seal assembly is including locating two skeleton oil seals of the higher level, the sealing washer of lower level between bearing gland middle part hole and the axle sleeve.
Compared with the prior art, the utility model discloses an advantage and effect are:
1. the utility model discloses add the sealing washer between main shaft and axle sleeve, make main shaft and axle sleeve can not take place relative rotation, guaranteed can not the oil leak between main shaft and the axle sleeve.
2. The utility model discloses structurally improving at traditional axle sleeve, becoming axle sleeve and axle sleeve nut two parts with traditional axle sleeve split. When the coupler is not installed in place, the coupler and the shaft sleeve can be tightly propped by adjusting the position of the nut of the shaft sleeve, so that the shaft sleeve cannot displace in the axial direction, and the stability of the integral sealing structure is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
And (3) identifying the figure number: 1. a main shaft; 2. a central pedestal; 3. a bearing gland; 4. a shaft sleeve; 5. a double-row self-aligning roller bearing; 6. a shaft sleeve nut; 7. a seal ring; 8. framework oil seal; 9. an O-shaped ring; 10. a planar bearing pad; 11. a thrust self-aligning roller bearing; 12. a bearing pad; 13. a coupling is provided.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to these examples.
The lower bearing device of the main shaft of the pulverizer comprises a bearing mechanism arranged on the main shaft 1 of the pulverizer in a bearing position at the lower part of the central shaft frame 2 and a bearing gland 3 arranged at the bottom of the bearing position and used for limiting the bearing mechanism, and the sealing mechanism of the lower bearing device of the main shaft of the pulverizer is arranged between the main shaft 1 and the bearing gland 3, as shown in fig. 1.
The bearing mechanism comprises an upper self-aligning thrust roller bearing 11 and a lower double-row self-aligning roller bearing 5, a plane bearing pad 10 is arranged between the upper self-aligning thrust roller bearing 11 and the lower double-row self-aligning roller bearing 5, the self-aligning thrust roller bearing 11 is limited on a positioning step at the lower end of the main shaft 1, a bearing pad 12 for increasing a contact surface is arranged between the two self-aligning thrust roller bearing 11 and the lower double-row self-aligning roller bearing 5, and the.
Sealing mechanism is including rising and tightly going on synchronous pivoted axle sleeve 4, axle sleeve nut 6, O type circle 9 and seal assembly on main shaft 1, and the seal ring groove, the outer wall lower part that holding O type circle 9 were seted up on 4 inner wall upper portions of axle sleeve are equipped with the external screw thread, and axle sleeve nut 6 fits on axle sleeve 4 through the internal thread soon, and seal assembly is including locating two upper-order skeleton oil blanket 8, the sealing washer 7 of lower level between 3 middle part holes of bearing gland and the axle sleeve 4.
The utility model discloses when installation axle sleeve 4, put into O type circle 9 at the sealing washer inslot of axle sleeve 4 earlier, put in place axle sleeve 4 installation again, can effectively prevent the oil leak between main shaft 1 and the axle sleeve 4. Before the shaft coupling 13 is installed, the shaft sleeve nut 6 is turned upwards to be higher than the bottom end of the shaft sleeve 4; after the coupling 13 is installed, the sleeve nut 6 is turned down to engage the coupling 13. When the shaft coupling 13 is not installed in place and cannot be tightly propped against the shaft sleeve 4, the shaft sleeve 4 and the shaft coupling 13 are tightly propped against each other by adjusting the shaft sleeve nut 6, so that the shaft sleeve 4 is prevented from sliding downwards or displacing, and the stability of the whole sealing structure can be effectively ensured.
Claims (2)
1. The sealing mechanism of the lower supporting device of the main shaft of the flour mill is characterized by comprising a shaft sleeve (4), a shaft sleeve nut (6) and an O-shaped ring (9) which are tensioned on the main shaft (1) to synchronously rotate and a sealing assembly arranged between a bearing gland (3) and the shaft sleeve (4), wherein a sealing ring groove for accommodating the O-shaped ring (9) is formed in the upper part of the inner wall of the shaft sleeve (4), external threads are arranged on the lower part of the outer wall of the shaft sleeve (4), and the shaft sleeve nut (6) is screwed on the shaft sleeve (4) through the internal threads.
2. The lower bearing seal mechanism for a pulverizer main shaft according to claim 1, wherein: the sealing assembly comprises two columns of framework oil seals (8) and a lower sealing ring (7) which are arranged between an inner hole in the middle of the bearing gland (3) and the shaft sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022494461.2U CN213541282U (en) | 2020-11-02 | 2020-11-02 | Sealing mechanism for lower bearing device of main shaft of pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022494461.2U CN213541282U (en) | 2020-11-02 | 2020-11-02 | Sealing mechanism for lower bearing device of main shaft of pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213541282U true CN213541282U (en) | 2021-06-25 |
Family
ID=76479747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022494461.2U Active CN213541282U (en) | 2020-11-02 | 2020-11-02 | Sealing mechanism for lower bearing device of main shaft of pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213541282U (en) |
-
2020
- 2020-11-02 CN CN202022494461.2U patent/CN213541282U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213541282U (en) | Sealing mechanism for lower bearing device of main shaft of pulverizer | |
| CN210290749U (en) | Large-scale transmission slip ring based on end face dynamic seal | |
| CN202309332U (en) | Sealing structure for antifriction bearing of middle and large scale vertical type motor | |
| CN213541281U (en) | Sealing mechanism for lower bearing device of main shaft of pulverizer | |
| CN203130790U (en) | Bearing combination | |
| CN202840783U (en) | Idle speed motor capable of preventing rotor from axial floating | |
| CN201435554Y (en) | Movable sealing structure of charging cabinet | |
| CN110206889B (en) | Large-scale transmission slip ring based on end face dynamic seal | |
| CN201960519U (en) | Detaching device | |
| CN201357059Y (en) | Mounting structure for main shaft and cylinder in horizontal cooling mixer | |
| CN213541103U (en) | Sealing mechanism for lower bearing device of main shaft of pulverizer | |
| CN205025944U (en) | Bearing frame that breaker was used | |
| CN206409527U (en) | A kind of bearing dustproof cover | |
| CN202282678U (en) | Fixing structure of middle-large size vertical motor rolling bearing | |
| CN219406038U (en) | Heavy-duty car axle housing integrated with oil seal mounting seat | |
| CN221257445U (en) | Bearing gland | |
| CN206175287U (en) | Electronic pump's thrust device | |
| CN221120404U (en) | Fan bearing box with good sealing performance | |
| CN218953823U (en) | Four-row crossed cylindrical roller turntable bearing | |
| CN205148215U (en) | Frock is dismantled to non - drive end bearing of double bracing pump | |
| CN216789021U (en) | Crankshaft thrust sliding bearing with chamfering mechanism | |
| CN211027534U (en) | Side roller wheel of cooling bed straightening grid | |
| CN214742751U (en) | Deep groove ball bearing | |
| CN209704906U (en) | A kind of chemical pump mechanical sealing mechanism | |
| CN219119800U (en) | Carbon fiber rinsing machine washing roller shaft end sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |