CN216242284U - Sealing structure in high-speed roller - Google Patents

Abstract

The utility model relates to a sealing structure in a high-speed roller, wherein the high-speed roller comprises a roller shaft, a roller sleeve sleeved outside the roller shaft, and a bearing arranged between the roller shaft and the roller sleeve, the sealing structure comprises a framework oil seal, a jacket and a clamping piece, the framework oil seal is sleeved on the roller shaft and positioned at the outer side end of the bearing, the jacket is sleeved on the roller shaft and positioned at the outer side of the framework oil seal, a circular groove is further formed in the end surface of the inner side of the jacket, the framework oil seal is positioned in the circular groove and is tightly pressed with the side wall of the circular groove, the peripheral surface of the jacket is contacted with the inner wall of the roller sleeve, and the outer peripheral surface of the jacket is sealed with the inner wall of the roller sleeve; the clamping piece is axially fixed with the roller sleeve, and is pressed on the outer side end of the jacket, so that the jacket is pressed on the end face of the outer side of the framework oil seal, and the framework oil seal is pressed on the end of the outer side of the bearing. The sealing structure has good sealing performance, can keep the bearing well lubricated, avoids the phenomena of bearing damage and blocking caused by dust entering, and has simple structure and convenient assembly and disassembly.

Description

Sealing structure in high-speed roller

Technical Field

The utility model relates to the technical field of roller parts, in particular to a sealing structure in a high-speed roller.

Background

The TS8 belt-type spectral impurity removal system is non-tobacco impurity removal equipment which takes optical photographic equipment as an identification element, and removes non-tobacco impurities in tobacco raw materials by using an optical comparison principle. In order to ensure that the material has smaller cloth thickness and density when being identified by an optical camera, the device adopts a secondary high-speed belt to accelerate and increase the speed of the material, wherein the device comprises 1 pre-accelerating belt (the rotating speed of a driving roller of the pre-accelerating belt is 221 rpm, and the rotating speed of a driven roller is 758 rpm) which runs at a high speed with the linear speed of 2.5m/s and 1 main accelerating belt (the rotating speed of a driving roller of the main accelerating belt is 486 rpm, and the rotating speed of the driven roller is 1667 rpm) which runs at a high speed with the linear speed of 5.5 m/s.

The two high-speed belts for pre-acceleration and main acceleration are driven by a high-speed roller, wherein the driven roller comprises a roller shaft and a roller sleeve sleeved outside the roller shaft, and a double-row roller self-aligning bearing is arranged between the roller shaft and the roller sleeve. In the existing high-speed roller, a roller shaft and a roller sleeve are usually sealed by a sealing structure consisting of a Z-shaped sealing ring, a spacing gasket and a supporting gasket. Because the driven roll can produce higher temperature when high-speed operation, the clearance appears easily after operating time is long, leads to the leakproofness to descend, and the dust can be followed and entered into bearing department, takes place bearing lubrication failure, dust and gets into the phenomenon, can lead to equipment to shut down to because seal structure is comparatively complicated, maintenance duration is longer, thereby influences equipment operating efficiency.

SUMMERY OF THE UTILITY MODEL

In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to provide a sealing structure in a high-speed roller, which has good sealing performance, can keep a bearing well lubricated, avoid the phenomena of bearing damage and bearing seizure caused by dust entering, prolong the service life of the bearing under the working condition, and has a simple structure and convenient assembly and disassembly.

In order to achieve the purpose, the utility model provides a sealing structure in a high-speed roller, wherein the high-speed roller comprises a roller shaft, a roller sleeve sleeved outside the roller shaft, and a bearing arranged between the roller shaft and the roller sleeve, the sealing structure comprises a framework oil seal, a jacket and a clamping piece, the framework oil seal is sleeved on the roller shaft and positioned at the outer side end of the bearing, the jacket is sleeved on the roller shaft and positioned at the outer side of the framework oil seal, a circular groove is further formed in the end surface of the inner side of the jacket, the framework oil seal is positioned in the circular groove and is tightly pressed with the side wall of the circular groove, and the peripheral surface of the jacket is contacted with the inner wall of the roller sleeve and is sealed between the framework oil seal and the roller sleeve; the clamping piece is axially fixed with the roller sleeve, and is pressed on the outer side end of the jacket, so that the jacket is pressed on the end face of the outer side of the framework oil seal, and the framework oil seal is pressed on the end of the outer side of the bearing.

Further, the clamping piece comprises a hole clamp spring which is embedded in the inner wall of the roller sleeve and is pressed at the outer side end of the clamping sleeve.

Further, the framework oil seal adopts a double-lip sealing structure.

Further, the framework oil seal is made of a fluororubber material.

Furthermore, a threaded hole is formed in the end face of the outer side of the clamping sleeve.

Furthermore, an annular groove is formed in the outer peripheral surface of the clamping sleeve, an O-shaped sealing ring is arranged in the annular groove, and the O-shaped sealing ring is tightly attached to the inner wall of the roller sleeve.

Furthermore, the shaft clamping spring is embedded on the roller shaft and tightly pressed on the outer end face of the inner end of the bearing.

Further, the bearing is a double-row roller self-aligning bearing.

As described above, the seal structure according to the present invention has the following advantageous effects:

through setting up the skeleton oil blanket, pressing from both sides cover and chucking spare, utilize the skeleton oil blanket to seal the bearing, improved the leakproofness of high-speed roller, make the bearing of high-speed roller keep good lubrication, stopped the dust and got into and cause bearing damage, card dead phenomenon. And press from both sides the skeleton oil blanket through pressing from both sides the cover and press from both sides tightly in its circular recess, can carry out corresponding protection to the skeleton oil blanket, when dismantling, only need through pulling out the cover that presss from both sides, press from both sides the cover and can take the skeleton oil blanket to tear down together, can not cause the damage to the skeleton oil blanket, make inspection, change the bearing realize dismantling fast under the prerequisite of not destroying the sealing member. The sealing structure has good sealing performance, can keep good lubrication of the bearing, avoids the phenomena of bearing damage and clamping caused by dust entering, and has simple structure and convenient assembly and disassembly.

Drawings

Fig. 1 is a schematic structural view of a seal structure of the present invention.

Fig. 2 is a schematic structural view of the seal structure of the present invention before assembly.

Description of the element reference numerals

1 roll shaft

2 roller sleeve

3 bearing

4 framework oil seal

5 Jacket

6 jump ring for hole

7O-shaped sealing ring

8 circlip for axle

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.

Referring to fig. 1 to 2, the utility model provides a sealing structure in a high-speed roller, the high-speed roller comprises a roller shaft 1, a roller sleeve 2 sleeved outside the roller shaft 1, and a bearing 3 arranged between the roller shaft 1 and the roller sleeve 2, wherein the inner ring of the bearing 3 is sleeved on the roller shaft 1, the outer ring of the bearing is connected with the inner wall of the roller sleeve 2, and the roller sleeve 2 coaxially and relatively rotates around the roller shaft 1 through the bearing 3. The sealing structure comprises a framework oil seal 4, a jacket 5 and a clamping piece, wherein the framework oil seal 4 is sleeved on a roll shaft 1 and is positioned at the outer side end of a bearing 3, the jacket 5 is sleeved on the roll shaft 1 and is positioned at the outer side of the framework oil seal 4, a circular groove is further formed in the end face of the inner side of the jacket 5, the framework oil seal 4 is positioned in the circular groove and is tightly pressed against the side wall of the circular groove, the peripheral surface of the jacket 5 is in contact with the inner wall of a roll sleeve 2, and the two sides are sealed; the clamping piece is axially fixed with the roller sleeve 2 and is pressed on the outer side end of the jacket 5, so that the jacket 5 is pressed on the outer side end face of the framework oil seal 4, and the framework oil seal 4 is pressed on the outer side end of the bearing 3.

According to the sealing structure, the framework oil seal 4 is used for sealing the bearing 3, so that the sealing performance of the high-speed roller is improved, the bearing 3 of the high-speed roller is kept well lubricated, and the phenomena of damage and blocking of the bearing 3 caused by dust entering are avoided. And press from both sides skeleton oil blanket 4 tightly in its circular recess through pressing from both sides cover 5, can carry out corresponding protection to skeleton oil blanket 4, when dismantling, only need through pressing from both sides cover 5 and pull out, press from both sides cover 5 and can take skeleton oil blanket 4 to tear out together, can not cause the damage to skeleton oil blanket 4, make inspection, change bearing 3 realize dismantling fast under the prerequisite of not destroying the sealing member.

In the present embodiment, referring to fig. 1 and 2, as a preferred design, the clamping member includes a hole-use snap spring 6, the hole-use snap spring 6 is embedded in the inner wall of the roller sleeve 2 and is kept fixed in the axial direction, and the hole-use snap spring 6 presses the outer end of the jacket 5 to provide a corresponding elastic force, so that the jacket 5 presses the outer end face of the framework oil seal 4. Adopt the hole to carry out the mode that the chucking is fixed with 5 skeleton oil blanket 4 of cover with jump ring 6, can have certain elasticity space, at long-term operation in-process, the oil blanket that skeleton oil blanket 4 can be compensated to the elastic force that the hole provided with jump ring 6 is from the tight power.

In this embodiment, referring to fig. 1, as a preferred design, the framework oil seal 4 is of a double-lip sealing structure, and the framework oil seal 4 is made of a fluororubber material, so that the high-speed roller can be well applied to an environment with more dust and a higher rotating speed of the bearing 3, and particularly can be applied to an S8 belt type spectrum impurity removing machine as a driven roller for pre-accelerating and main accelerating belts.

In this embodiment, referring to fig. 1, as a preferred design, a threaded hole is further formed on an outer end surface of the jacket 5, and when disassembling, a special tool is screwed into the threaded hole to facilitate taking out the jacket 5. An annular groove is formed in the outer peripheral surface of the clamping sleeve 5, an O-shaped sealing ring 7 is arranged in the annular groove, and the O-shaped sealing ring 7 is tightly attached to the inner wall of the roller sleeve 2, so that the sealing performance between the clamping sleeve 5 and the inner wall of the roller sleeve 2 is ensured. In this embodiment, the sealing structure further includes a shaft snap spring 8, the shaft snap spring 8 is embedded on the roller shaft 1 to keep axial fixation, and the shaft snap spring 8 is pressed on the outer end face of the inner end of the bearing 3 to stabilize the bearing 3.

In the present application, the bearing 3 in the high-speed roller can be various types of bearings 3, in particular, can be a double-row roller self-aligning bearing 3, and can play a good sealing protection effect.

From last knowing, seal structure in the high-speed roller in this embodiment, sealing performance is good, can make driven roller 1 bearing keep good lubrication, avoids the dust to get into and causes bearing 3 to damage, card dead phenomenon to simple structure, easy dismounting makes inspection, change bearing 3 realize quick dismantlement under the prerequisite of not destroying the sealing member. When the high-speed driven roller is applied to the driven roller of the TS8 belt type spectrum impurity removing machine, a field continuous production test shows that the high-speed driven roller of the structure normally operates for more than 12 months, equipment is not stopped due to the fault, and the high-speed driven roller can still keep good transmission precision after being periodically detached and checked, can be continuously used for more than 6 months, solves the problem of short service life of the high-speed driven roller, and improves the operation reliability of the equipment. The maintenance cost is reduced, and meanwhile, the stability of the flow line production is guaranteed to the maximum extent.

To sum up, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (8)

1. The utility model provides a seal structure in high-speed roller, high-speed roller includes roller (1), suit in roller shell (2) outside roller (1) and sets up bearing (3) between roller shell (2) and roller shell (1), the inner circle of bearing (3) cup joints on roller shell (1), the outer lane meets with roller shell (2) inner wall, its characterized in that: the sealing structure comprises a framework oil seal (4), a jacket (5) and a clamping piece, wherein the framework oil seal (4) is sleeved on the roll shaft (1) and is positioned at the outer side end of the bearing (3), the jacket (5) is sleeved on the roll shaft (1) and is positioned at the outer side of the framework oil seal (4), a circular groove is further formed in the end face of the inner side of the jacket (5), the framework oil seal (4) is positioned in the circular groove and is tightly pressed against the side wall of the circular groove, and the outer peripheral surface of the jacket (5) is in contact with the inner wall of the roll sleeve (2) and is sealed between the framework oil seal and the roll shaft; the clamping piece is axially fixed with the roller sleeve (2), and is pressed on the outer side end of the clamping sleeve (5), so that the clamping sleeve (5) is pressed on the outer side end face of the framework oil seal (4), and the framework oil seal (4) is pressed on the outer side end of the bearing (3).

2. A seal structure in a high-speed roller according to claim 1, characterized in that: the clamping piece comprises a hole clamp spring (6), and the hole clamp spring (6) is embedded in the inner wall of the roller sleeve (2) and tightly pressed at the outer side end of the clamping sleeve (5).

3. A seal structure in a high-speed roller according to claim 1, characterized in that: the framework oil seal (4) adopts a double-lip sealing structure.

4. A seal structure in a high-speed roller according to claim 1, characterized in that: the framework oil seal (4) is made of a fluororubber material.

5. A seal structure in a high-speed roller according to claim 1, characterized in that: the end face of the outer side of the jacket (5) is also provided with a threaded hole.

6. A seal structure in a high-speed roller according to claim 1, characterized in that: an annular groove is formed in the outer peripheral surface of the clamping sleeve (5), an O-shaped sealing ring (7) is arranged in the annular groove, and the O-shaped sealing ring (7) is tightly attached to the inner wall of the roller sleeve (2).

7. A seal structure in a high-speed roller according to claim 1, characterized in that: the shaft is embedded on the roller shaft (1) through the clamping spring (8) for the shaft, and the shaft is tightly pressed on the outer end face of the inner end of the bearing (3).

8. A seal structure in a high-speed roller according to claim 1, characterized in that: the bearing (3) is a double-row roller self-aligning bearing (3).

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