CN219866246U - Wear-resistant sealing structure of grinding roller of vertical mill - Google Patents
Wear-resistant sealing structure of grinding roller of vertical mill Download PDFInfo
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- CN219866246U CN219866246U CN202321268089.0U CN202321268089U CN219866246U CN 219866246 U CN219866246 U CN 219866246U CN 202321268089 U CN202321268089 U CN 202321268089U CN 219866246 U CN219866246 U CN 219866246U
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- sealing
- gland
- back perspective
- grinding roller
- bushing
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- 238000007789 sealing Methods 0.000 title claims abstract description 82
- 210000004907 gland Anatomy 0.000 claims abstract description 53
- 238000009434 installation Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims description 8
- 239000004519 grease Substances 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 3
- GQWNECFJGBQMBO-UHFFFAOYSA-N Molindone hydrochloride Chemical compound Cl.O=C1C=2C(CC)=C(C)NC=2CCC1CN1CCOCC1 GQWNECFJGBQMBO-UHFFFAOYSA-N 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The utility model provides a wear-resistant sealing structure of a grinding roller of a vertical mill, which comprises a rear transparent cover, a first sealing gland and a second sealing gland, wherein one end of the rear transparent cover is provided with an annular sealing element installation position, the first sealing gland is an annular structure with a secondary stepped platform, the outer side of the first sealing gland is provided with a secondary stepped platform, the rear transparent cover is welded with the first sealing gland, the second sealing gland is arranged on the other end face of the first sealing gland and is connected with the first sealing gland and the rear transparent cover through locking screws, a bushing is arranged between the rear transparent cover and a main shaft, the diameter of an inner ring is two, and an oil inlet groove and an oil hole are formed in the side wall of the middle section of the bushing. The sealing component is changed into a 2+1 design, the sealing effect is improved, the use stability of the equipment is improved, the sealing is not directly contacted with the main shaft by adding the bushing, so that the abrasion of the main shaft is avoided, the service life of the sealing device is prolonged, and the sealing system can be periodically re-lubricated in the running process of the equipment, so that the service life of the sealing component is prolonged.
Description
Technical Field
The utility model belongs to the technical field of vertical roller mill sealing structures, and particularly relates to a wear-resistant sealing structure of a vertical roller mill grinding roller.
Background
The vertical roller mill is used for grinding cement raw material, cement clinker, slag and cinder, and has the features of simple structure and low production and use cost. The grinding disc device is rotatably supported on the machine body through the rotary guide rail, and is in transmission connection with the transmission device. Because the transmission device does not bear high axial loads such as the weight of the grinding disc and the grinding pressure, the transmission device can adopt a universal speed reducer, thereby having the advantages of compact structural configuration and reliable work, shortening the grinding stopping time and reducing the use and maintenance cost of equipment.
The sealing system in the prior art is a 2-piece sealing combined use, namely an oil sealing and dust sealing structure. Seal sizes 500x550x25 are used. Lubrication structure and device of sealing system are not had, once only add sealed lubricating grease, can't carry out the secondary and mend fat, and sealing lip direct contact main shaft bearing position moreover, the shortcoming is:
1. the sealing system is free of re-lubrication, resulting in reduced sealing life, typically not exceeding one year.
2. Direct contact with the spindle results in severe spindle wear and requires maintenance of the bearing each time the seal is replaced.
3. The structure of an oil seal and a dust seal leads to poor sealing effect, and the oil leakage condition frequently occurs during use.
Therefore, the sealing structure of traditional design has poor use effect, low service life and high later maintenance cost, and influences normal production efficiency.
Disclosure of Invention
The utility model solves the technical problem of providing the wear-resistant sealing structure of the vertical mill grinding roller, which can better remedy the defects, and solves the problems of poor sealing effect, low service life, high maintenance cost in the later stage of serious main shaft abrasion and influence on normal production efficiency of the sealing structure.
The technical scheme adopted by the utility model is as follows: the utility model provides a wear-resisting seal structure of vertical mill grinding roller, includes back perspective lid, first gland and second gland, back perspective lid one end processing has annular sealing member installation position, first gland is the annular structure that the outside processing had second grade ladder platform, and the external diameter great value of first gland is the same with the sealing member installation position external diameter of back perspective lid and in the same position processing of back perspective lid terminal surface have the through-hole, the external diameter less value of first gland with sealing member installation position internal diameter is the same, back perspective lid and first gland welded connection, the terminal surface that makes back perspective lid in sealing member installation position is contacted with the ladder platform terminal surface of first gland to the less department of external diameter of first gland, the second gland is installed in the other terminal surface of first gland and is connected with back perspective lid through locking screw, install the bush between back perspective lid and the main shaft, the bush is annular structure, and the diameter of inner ring has two, is close to the diameter of bush two terminal surface parts and is less, is located the middle section diameter of bush and processing has the oil inlet port and is put in the middle section of bush.
Preferably, the outer end surface of the main shaft is perforated to the position of the bushing, and is communicated with the oil inlet groove and the oil hole of the bushing, so that lubricating grease can be added to the sealing position of the grinding roller outside the machine, and the service life of the sealing assembly is prolonged.
Preferably, the thickness of the second sealing gland is 5mm, and the depth of the whole sealing position after the rear transparent cover is welded with the first sealing gland is 95mm, so that the depth of the original sealing position is increased, and the sealing effect is improved.
Preferably, the bushing has a surface roughness of less than 0.4 and a surface hardness of greater than HRC55. The sealing structure is not in direct contact with the main shaft, so that the abrasion of the main shaft is avoided, and the service life of the sealing structure is prolonged.
The beneficial effects of the utility model are as follows: the sealing component is changed into a 2+1 design, namely two sealing oil and one sealing dust are used for improving the sealing effect, the stability of the equipment is improved, the sealing is not directly contacted with the main shaft by adding the bushing, so that the abrasion of the main shaft is avoided, the service life of the sealing device is prolonged, the sealing system can be regularly lubricated again in the running process of the equipment, the service life of the sealing component is prolonged, the maintenance period is prolonged from 1-2 years to 3-5 years in the prior production process, the running stability of the equipment is improved, and the maintenance cost in the later period of the equipment is greatly reduced.
Drawings
FIG. 1 is a schematic structural view of a wear-resistant seal structure for a grinding roller of a vertical mill;
fig. 2 is an enlarged view of a portion of fig. 1.
Reference numerals: 1-rear transparent cover, 2-first sealing gland, 3-second sealing gland, 4-bush, 5-main shaft, 6-locking screw, 101-sealing element installation position, 401-bush middle section, 402-oilhole.
Detailed Description
The present utility model will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 and 2, a wear-resistant seal structure of a vertical mill grinding roller comprises a rear permeable cover 1, a first seal gland 2 and a second seal gland 3, wherein one end of the rear permeable cover 1 is provided with an annular seal installation position 101, the first seal gland 2 is an annular structure with a secondary stepped platform in an outer side, the larger value of the outer diameter of the first seal gland 2 is identical to the outer diameter of the seal installation position 101 of the rear permeable cover 1, through holes are formed in the same position as the end face of the rear permeable cover 1, the smaller value of the outer diameter of the first seal gland 2 is identical to the inner diameter of the seal installation position 101, the rear permeable cover 1 is in welded connection with the first seal gland 2, the smaller outer diameter of the first seal gland 2 is inserted into the seal installation position 101 to enable the end face of the rear permeable cover 1 to be in contact with the stepped platform end face of the first seal gland 2, the other end face of the second seal gland 3 is arranged on the first seal gland 2, the thickness of the second seal gland 3 is 5mm, the depth of the rear permeable cover 1 and the first seal gland 2 is 95mm, and the overall seal depth of the seal gland is increased.
As shown in fig. 2, a bushing 4 is installed between the rear transparent cover 1 and the main shaft 5, and the bushing 4 is sleeved on the main shaft 5, so that the sealing structure is not directly contacted with the main shaft 5, thereby avoiding abrasion of the main shaft 5, and improving the service life of the sealing structure. On the premise of not affecting an oil inlet and return path (oil hole) of the grinding roller assembly, the original sealing contact position of the main shaft 5 is processed (the original diameter is 500mm and is processed to 480 mm), the bushing 4 is of an annular structure, and the dimension of the bushing 4 is 480mm in inner diameter, 510mm in outer diameter and 125mm in width. The diameters of the inner rings of the bushing 4 are two, the diameters of the parts close to the two end faces of the bushing 4 are smaller, the diameters of the parts located in the middle section 401 of the bushing are larger, and the side wall of the middle section 401 of the bushing is provided with an oil inlet groove and an oil hole 402. The outer end surface of the main shaft 5 is perforated along the inner part of the shaft body (as shown by a broken line penetrating through the main shaft 5 in fig. 1) to the position of the bushing 4, and is communicated with the oil inlet groove and the oil hole 402 of the bushing 4, so that lubricating grease can be added to the sealing part of the grinding roller outside the machine, and the service life of the sealing assembly is prolonged. The surface roughness of the lining 4 is less than 0.4, and the surface hardness is more than HRC55.
The original back transparent cover has a height of 190mm (the height of the removed seam allowance is 16 mm), the mounting position depth of the sealing element is 70mm, and the diameter is 550mm. The height of the sealing gland is 20mm (the height of the spigot is 15 mm), and the total height of the sealing gland and the spigot is 210mm (the height of the locking screw is not considered). After the sealing structure is improved, the sealing element mounting position 101 is deeply processed to 75mm, and the diameter is processed to 560mm. The original sealing gland is removed, the first sealing gland 2 is welded to the rear transparent cover 1, and then the transparent cover 1 is processed together. (corresponding to the sealing position of the rear transparent cover 1 being changed to a depth of 95mm and a diameter of 560 mm), a second sealing gland 3 having a thickness of 5mm is additionally added. After improvement, the whole height after assembly is 215mm (the height of the locking screw is not considered), and the locking screw is used for locking, so that the total height after assembly is slightly higher than the original configuration by less than 5mm.
The foregoing describes specific embodiments of the present utility model and the technical principles applied, and any modifications and equivalent changes based on the technical solutions of the present utility model should be included in the protection scope of the present utility model.
Claims (4)
1. The utility model provides a wear-resisting seal structure of vertical mill grinding roller which characterized in that: including back perspective lid, first gland and second gland, back perspective lid one end processing has annular sealing member installation position, first gland is the annular structure that the outside processing had second grade ladder platform, and the external diameter great value of first gland is the same with the sealing member installation position external diameter of back perspective lid and has the through-hole with the same position processing of back perspective lid terminal surface, the external diameter less value of first gland with sealing member installation position internal diameter is the same, back perspective lid and first gland welded connection, the terminal surface that makes back perspective lid in sealing member installation position is inserted to the external diameter less department of first gland contacts with the ladder platform terminal surface of first gland, the second gland is installed in the other terminal surface of first gland and is connected with first gland and back perspective lid through locking screw, install the bush between back perspective lid and the main shaft, the bush is annular structure, and the diameter of inner ring has two, is close to the diameter of bush both ends face part and is less, is located the diameter great in the bush and has oil inlet port and processing groove in the middle section.
2. The wear-resistant sealing structure of a grinding roller of a vertical mill according to claim 1, wherein: and the outer end surface of the main shaft is perforated to the position of the bushing, and is communicated with an oil inlet groove and an oil hole of the bushing, so that lubricating grease can be added at the sealing position of the grinding roller outside the machine.
3. The wear-resistant sealing structure of a grinding roller of a vertical mill according to claim 1, wherein: the thickness of the second sealing gland is 5mm, and the depth of the whole sealing position after the rear transparent cover is welded with the first sealing gland is 95mm.
4. The wear-resistant sealing structure of a grinding roller of a vertical mill according to claim 1, wherein: the surface roughness of the bushing is less than 0.4, and the surface hardness is greater than HRC55.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321268089.0U CN219866246U (en) | 2023-05-22 | 2023-05-22 | Wear-resistant sealing structure of grinding roller of vertical mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321268089.0U CN219866246U (en) | 2023-05-22 | 2023-05-22 | Wear-resistant sealing structure of grinding roller of vertical mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219866246U true CN219866246U (en) | 2023-10-20 |
Family
ID=88324968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321268089.0U Active CN219866246U (en) | 2023-05-22 | 2023-05-22 | Wear-resistant sealing structure of grinding roller of vertical mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219866246U (en) |
-
2023
- 2023-05-22 CN CN202321268089.0U patent/CN219866246U/en active Active
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