CN211514731U - Vertical wet grinder - Google Patents
Vertical wet grinder Download PDFInfo
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- CN211514731U CN211514731U CN201922286052.0U CN201922286052U CN211514731U CN 211514731 U CN211514731 U CN 211514731U CN 201922286052 U CN201922286052 U CN 201922286052U CN 211514731 U CN211514731 U CN 211514731U
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- circumferential surface
- outer circumferential
- grinding roller
- sealing
- shaft sleeve
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- 238000007789 sealing Methods 0.000 claims abstract description 60
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 3
- 239000003513 alkali Substances 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The utility model relates to a vertical wet grinder, including setting up the grinding roller subassembly in wet grinder crushing chamber, its innovation point lies in: the grinding roller assembly comprises a grinding roller shaft, a bearing group and a shaft sleeve, the shaft sleeve is sleeved on the front half part of the grinding roller shaft, the bearing group is arranged between the shaft sleeve and the front half part of the grinding roller shaft, and a sealing cover is arranged on the end face of the front end of the shaft sleeve; the sealing cover is of a multi-step rotary structure, a double sealing ring is arranged between the end face of the shaft sleeve and the cover main body, the sealing cover is also provided with a cavity, and a pressure sensor is arranged in the cavity. The utility model has the advantages that: the double sealing reduces the infiltration of acid and alkali liquor; utilize built-in pressure sensor to detect the change of intracavity pressure, and then be convenient for judge the sealed shroud that is located wet grinder crushing chamber whether causes serious extrusion deformation to in time discover the condition that sealed shroud damaged, avoid not in time discovering to damage and cause the acid-alkali lye to be detained in the bearing for a long time.
Description
Technical Field
The utility model relates to a vertical wet grinder, in particular to vertical wet grinder that can prolong vertical wet grinder bearing life cycle.
Background
Most vertical wet mills contact with liquid for a long time, even contact with acid-base liquid, so that the service cycle of the bearing is shortened, the replacement is frequent, the production continuity is influenced, and the equipment maintenance cost is increased, thereby greatly increasing the comprehensive operation cost of enterprises.
At present, the traditional method is that a sealing cover is arranged at the end part of a roller mill outside a bearing end in a crushing cavity of a vertical mill, so that a roller mill shaft and the bearing outside the roller mill shaft are covered, and the contact between the bearing and a material-containing liquid is effectively avoided. There are still some problems, because the end face of the cover cap is usually made into a step surface when the cover cap is designed, so that the cover cap not only plays a role of sealing, but also plays a role of limiting the outer ring of the bearing. But make the terminal surface that shroud and axle sleeve correspond can't accomplish to laminate completely, in corrosive liquids long-term stagnation easily permeates the bearing in this gap department, in addition, the shroud also can influence its sealed effect greatly after receiving extrusion deformation.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a vertical wet grinder that can prolong vertical wet grinder bearing life cycle.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a vertical wet grinder, includes the grinding roller subassembly of setting in wet grinder crushing chamber, its innovation point lies in: the grinding roller assembly comprises a grinding roller shaft, a bearing group, a shaft sleeve, a grinding roller framework, a grinding roller tread, a first pressure ring and a second pressure ring; the grinding roller is characterized in that the shaft sleeve is fixed at the center of the grinding roller framework, a grinding roller tread is arranged on the outer circumferential surface of the grinding roller framework, and a first pressing ring and a second pressing ring are fixedly connected with the end surfaces of two sides of the grinding roller framework through bolts; the grinding roll shaft is characterized in that the shaft sleeve is sleeved on the front half part of the grinding roll shaft, a bearing set is arranged between the shaft sleeve and the front half part of the grinding roll shaft, one end of the bearing set in the axial direction of the bearing set is limited through a step surface on the grinding roll shaft, and the other end of the bearing set is limited through a bearing limiting plate fixedly connected with the front end surface of the grinding roll shaft; the rear end face of the shaft sleeve is movably connected with the grinding roller shaft through a gland and a movable sealing assembly, and the front end face of the shaft sleeve is provided with a sealing cover; the sealing cover comprises a cover body, the cover body is of a rotating body structure, the outer surface of the cover body is provided with a multi-step outer circumferential surface, the multi-step outer circumferential surface is sequentially provided with a first outer circumferential surface, a second outer circumferential surface and a third outer circumferential surface from top to bottom, the diameter of the third outer circumferential surface is equal to that of the first outer circumferential surface and smaller than that of the second outer circumferential surface, the third outer circumferential surface can be just embedded into the inner ring of the shaft sleeve, and a circle of first annular sealing groove is formed in the third outer circumferential surface; a circle of second annular sealing groove is formed in a first step surface formed between the second outer circumferential surface and the third outer circumferential surface, and a plurality of spring holes are drilled at the bottom of the second annular sealing groove; a plurality of through holes penetrating through the first step surface are distributed on a second step surface formed between the first outer circumferential surface and the second outer circumferential surface; the inner surface of the cover cap main body is provided with a multi-step inner circumferential surface, the multi-step inner circumferential surface is sequentially provided with a first inner circumferential surface and a second inner circumferential surface from top to bottom, the diameter of the second inner circumferential surface is larger than that of the first inner circumferential surface, and a plurality of threaded blind holes are distributed on a third step surface formed between the first inner circumferential surface and the second inner circumferential surface; the shroud main part is fixed on the preceding terminal surface of axle sleeve through the shroud bolt that passes the through-hole, and in the outer periphery embedding inner circle of axle sleeve of third of shroud main part, it has first sealing washer to embed in first annular seal groove, has second sealing washer and annular metal circle in second annular seal groove to install compression spring in the spring hole, support annular metal circle through compression spring and support the preceding terminal surface of axle sleeve with the second sealing washer.
Preferably, the sealing cover cap further comprises a sealing plate, the sealing plate is fixed on a third step surface through a screw embedded in the threaded blind hole, a third annular sealing groove is formed in the surface, facing the first inner circumferential surface, of the sealing plate, the diameter of the third annular sealing groove is larger than that of the first inner circumferential surface, a third sealing ring abutting against the third step surface is embedded in the third annular sealing groove, and a closed cavity is further isolated at the first inner circumferential surface of the cover cap main body through the sealing plate; the center of the sealing plate is provided with a rotary joint mounting hole, a rotary joint is mounted on the rotary joint mounting hole, the rotary joint is provided with a first interface and a second interface which are communicated with each other and can rotate relatively, and the first interface is communicated with the cavity; the axis of the grinding roll shaft is provided with a pipe body channel penetrating through the front end face and the rear end face of the grinding roll shaft, a data line pipe penetrates through the pipe body channel, the outer circumferential surface of the front end of the data line pipe is communicated and sealed with the second interface, a pressure sensor is arranged in the front end of the data line pipe in a sealing mode, a data line with one end connected with the pressure sensor is further arranged in the data line pipe, and the other end of the data line is connected to the outside of a grinding chamber of the wet grinder; and the sealing plate is also provided with an inflating nozzle communicated with the cavity.
The utility model has the advantages that: the sealing cover is arranged on the front end face of the shaft sleeve, and the outer surface of the sealing cover adopts a multi-step circumferential surface structure, so that multiple sealing is realized, the sealing effect is prevented from being influenced by a gap between the sealing cover and the bearing end face, and the infiltration of acid and alkali liquor is reduced; and have a cavity in the sealed shroud, utilize built-in pressure sensor to detect the change of intracavity pressure, and then be convenient for judge the sealed shroud that is located wet grinder crushing chamber whether causes serious extrusion deformation to in time discover the condition that sealed shroud damaged, avoid not in time discovering to damage and cause the acid-alkali lye to be detained in the bearing for a long time.
Drawings
Fig. 1 is the structure schematic diagram of the vertical wet grinder of the utility model.
Fig. 2 is a schematic view of the structure of the middle sealing cover cap of the present invention.
Fig. 3 is a partial enlarged view a of fig. 1.
Detailed Description
As shown in figure 1, the vertical wet grinder of the utility model comprises a grinding roller component arranged in a grinding chamber of the wet grinder, wherein the grinding roller component comprises a grinding roller shaft 1, a bearing group 2, a shaft sleeve 3, a grinding roller framework 4, a grinding roller tread 5, a first press ring 6, a second press ring 7, a bearing limiting plate 8,
The grinding roller grinding device is characterized in that a shaft sleeve 3 is fixedly welded at the center of a grinding roller framework 4, a grinding roller tread 5 is arranged on the outer circumferential surface of the grinding roller framework 4, and a first pressing ring 6 and a second pressing ring 7 which clamp the grinding roller tread 5 are fixedly connected with the end surfaces of two sides of the grinding roller framework 4 through bolts;
the shaft sleeve 3 is sleeved on the front half part of the grinding roller shaft 1, the bearing group 2 is arranged between the shaft sleeve 3 and the front half part of the grinding roller shaft 1, one end of the bearing group 2 in the axial direction of the bearing group is limited through a step surface on the grinding roller shaft 1, and the other end of the bearing group is limited through a bearing limiting plate 8 fixedly connected with the front end surface of the grinding roller shaft 1.
The rear end face of the shaft sleeve 3 is movably connected with the grinding roller shaft 1 through a gland 9 and a dynamic seal assembly 10, and a seal cover is installed on the front end face of the shaft sleeve 3.
As shown in fig. 2 and 3, the seal cap includes a cap body 11 and a seal plate 12, the cap body 11 is a rotary body structure,
the outer surface of the cap body 11 has a multi-step outer circumferential surface, which is provided with a first outer circumferential surface 111, a second outer circumferential surface 112 and a third outer circumferential surface 113 in this order from the top,
the diameter of the third outer circumferential surface 113 is equal to that of the first outer circumferential surface 111 and smaller than that of the second outer circumferential surface 112, the third outer circumferential surface 113 can be just embedded into the inner ring of the shaft sleeve 3, and a ring of first annular seal grooves 114 are arranged on the third outer circumferential surface 113;
a circle of second annular sealing groove 115 is formed on a first step surface formed between the second outer circumferential surface 112 and the third outer circumferential surface 113, and a plurality of spring holes 116 are drilled at the bottom of the second annular sealing groove 115;
a plurality of through holes 117 penetrating the first step surface are distributed on the second step surface formed between the first outer circumferential surface 111 and the second outer circumferential surface 112.
The inner surface of the cap body 11 has a multi-step inner circumferential surface in which a first inner circumferential surface 118 and a second inner circumferential surface 119 are provided in this order from the top,
the diameter of the second inner circumferential surface 119 is larger than that of the first inner circumferential surface 118, and a plurality of threaded blind holes are distributed on a third step surface formed between the first inner circumferential surface 118 and the second inner circumferential surface 119;
the cover body 11 is fixed to the front end surface of the shaft sleeve 3 by a cover bolt passing through the through hole 117, the third outer circumferential surface 113 of the cover body 11 is embedded in the inner ring of the shaft sleeve 3, the first seal ring 1110 is embedded in the first annular seal groove 114, the second seal ring 1111 and the annular metal ring 1112 are embedded in the second annular seal groove 115, the compression spring 1113 is installed in the spring hole 116, and the second seal ring 1111 is abutted against the front end surface of the shaft sleeve 3 by the compression spring 1113 abutting against the annular metal ring 1112.
The seal cover further includes a seal plate 12, the seal plate 12 is fixed on the third step surface by a screw 1114 embedded in the threaded blind hole, a third annular seal groove is disposed on the surface of the seal plate 12 facing the first inner circumferential surface 118, the diameter of the third annular seal groove is larger than that of the first inner circumferential surface 118, a third seal ring 1115 abutting against the third step surface is embedded in the third annular seal groove, and a closed cavity 13 is isolated at the first inner circumferential surface of the cover body 11 by the seal plate 12.
A rotary joint mounting hole is formed in the center of the sealing plate 12, a rotary joint 14 is mounted on the rotary joint mounting hole, the rotary joint 14 is provided with a first interface and a second interface which are communicated with each other and can rotate relatively, and the first interface is communicated with the cavity 13; the sealing plate 12 is also provided with an air charging nozzle 15 which is communicated with the cavity.
The axis of the grinding roll shaft 1 is provided with a pipe body channel 16 penetrating through the front end face and the rear end face of the grinding roll shaft, a data line pipe 17 penetrates through the pipe body channel 16, the outer circumferential surface of the front end of the data line pipe 17 is communicated and sealed with a second interface, a pressure sensor is arranged in the front end of the data line pipe 17 in a sealing mode, a data line with one end connected with the pressure sensor is further arranged in the data line pipe, and the other end of the data line is connected to the outside of a grinding chamber of a wet grinder.
Claims (2)
1. A vertical wet grinder, includes the grinding roller subassembly that sets up in wet grinder crushing chamber, its characterized in that: the grinding roller assembly comprises a grinding roller shaft, a bearing group, a shaft sleeve, a grinding roller framework, a grinding roller tread, a first pressure ring and a second pressure ring;
the grinding roller is characterized in that the shaft sleeve is fixed at the center of the grinding roller framework, a grinding roller tread is arranged on the outer circumferential surface of the grinding roller framework, and a first pressing ring and a second pressing ring are fixedly connected with the end surfaces of two sides of the grinding roller framework through bolts;
the grinding roll shaft is characterized in that the shaft sleeve is sleeved on the front half part of the grinding roll shaft, a bearing set is arranged between the shaft sleeve and the front half part of the grinding roll shaft, one end of the bearing set in the axial direction of the bearing set is limited through a step surface on the grinding roll shaft, and the other end of the bearing set is limited through a bearing limiting plate fixedly connected with the front end surface of the grinding roll shaft;
the rear end face of the shaft sleeve is movably connected with the grinding roller shaft through a gland and a movable sealing assembly, and the front end face of the shaft sleeve is provided with a sealing cover;
the sealing cover comprises a cover main body which is a revolving body structure,
the outer surface of the cover cap main body is provided with a multi-step outer circumferential surface, the multi-step outer circumferential surface is sequentially provided with a first outer circumferential surface, a second outer circumferential surface and a third outer circumferential surface from top to bottom,
the diameter of the third outer circumferential surface is equal to that of the first outer circumferential surface and smaller than that of the second outer circumferential surface, the third outer circumferential surface can be just embedded into the inner ring of the shaft sleeve, and a circle of first annular sealing groove is formed in the third outer circumferential surface;
a circle of second annular sealing groove is formed in a first step surface formed between the second outer circumferential surface and the third outer circumferential surface, and a plurality of spring holes are drilled at the bottom of the second annular sealing groove;
a plurality of through holes penetrating through the first step surface are distributed on a second step surface formed between the first outer circumferential surface and the second outer circumferential surface;
the inner surface of the cover cap main body is provided with a multi-step inner circumferential surface which is sequentially provided with a first inner circumferential surface and a second inner circumferential surface from top to bottom,
the diameter of the second inner circumferential surface is larger than that of the first inner circumferential surface, and a plurality of threaded blind holes are distributed on a third step surface formed between the first inner circumferential surface and the second inner circumferential surface;
the shroud main part is fixed on the preceding terminal surface of axle sleeve through the shroud bolt that passes the through-hole, and in the outer periphery embedding inner circle of axle sleeve of third of shroud main part, it has first sealing washer to embed in first annular seal groove, has second sealing washer and annular metal circle in second annular seal groove to install compression spring in the spring hole, support annular metal circle through compression spring and support the preceding terminal surface of axle sleeve with the second sealing washer.
2. The vertical wet mill of claim 1, wherein: the sealing cover cap also comprises a sealing plate, the sealing plate is fixed on a third step surface through a screw embedded in the threaded blind hole, a third annular sealing groove is arranged on the surface of the sealing plate facing the first inner circumferential surface, the diameter of the third annular sealing groove is larger than that of the first inner circumferential surface, a third sealing ring abutting against the third step surface is embedded in the third annular sealing groove, and a closed cavity is further isolated at the first inner circumferential surface of the cover cap main body through the sealing plate;
the center of the sealing plate is provided with a rotary joint mounting hole, a rotary joint is mounted on the rotary joint mounting hole, the rotary joint is provided with a first interface and a second interface which are communicated with each other and can rotate relatively, and the first interface is communicated with the cavity;
the axis of the grinding roll shaft is provided with a pipe body channel penetrating through the front end face and the rear end face of the grinding roll shaft, a data line pipe penetrates through the pipe body channel, the outer circumferential surface of the front end of the data line pipe is communicated and sealed with the second interface, a pressure sensor is arranged in the front end of the data line pipe in a sealing mode, a data line with one end connected with the pressure sensor is further arranged in the data line pipe, and the other end of the data line is connected to the outside of a grinding chamber of the wet grinder; and the sealing plate is also provided with an inflating nozzle communicated with the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922286052.0U CN211514731U (en) | 2019-12-18 | 2019-12-18 | Vertical wet grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922286052.0U CN211514731U (en) | 2019-12-18 | 2019-12-18 | Vertical wet grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211514731U true CN211514731U (en) | 2020-09-18 |
Family
ID=72465937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922286052.0U Active CN211514731U (en) | 2019-12-18 | 2019-12-18 | Vertical wet grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211514731U (en) |
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2019
- 2019-12-18 CN CN201922286052.0U patent/CN211514731U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A vertical wet grinding machine Granted publication date: 20200918 Pledgee: Industrial and Commercial Bank of China Limited Taixing Sub branch Pledgor: Jiangsu Pioneer Environmental Material Co.,Ltd. Registration number: Y2024980022562 |