Search

CN-116989066-B - Grinding roller device for vertical roller mill and installation method of adjusting gasket of grinding roller device

CN116989066BCN 116989066 BCN116989066 BCN 116989066BCN-116989066-B

Abstract

The invention discloses a grinding roller device for a vertical roller mill and a mounting method of an adjusting gasket thereof, wherein the grinding roller device comprises a grinding roller shaft, a bearing, a hub, a roller sleeve, a compression assembly and a sealing assembly; two single-row conical bearings are arranged between the grinding roll shaft and the hub, an adjusting gasket and a shaft end pressing plate are arranged at the tail end of the grinding roll shaft and used for adjusting the clearance of the bearings, a sensor is arranged on the shaft end pressing plate and used for detecting the temperature and vibration of the grinding roll, a roll sleeve is fixed on the outer side of the hub through a pressing assembly, and a sealing assembly comprises a penetrating cover, a shaft sleeve, two oil seals and a sealing frame and adopts a sealing structure of 'grinding outer wind plus two oil seals', so that the service life of the oil seals is prolonged.

Inventors

  • HAN YOUANG
  • YU TAO
  • XU YUANYUAN
  • NIE WENHAI
  • ZHU WENFU

Assignees

  • 中材（天津）粉体技术装备有限公司
  • 天津水泥工业设计研究院有限公司

Dates

Publication Date
20260505
Application Date
20230727

Claims (7)

  1. 1. A grinding roller device for a vertical roller mill comprises a grinding roller shaft (8), a bearing, a hub (1), a roller sleeve (2), a pressing component and a sealing component, and is characterized in that two single-row conical bearings are arranged between the grinding roller shaft (8) and the hub (1), each single-row conical bearing comprises a large single-row conical bearing (13) and a small single-row conical bearing (7), the two single-row conical bearings are installed in a back-to-back mode, the large single-row conical bearings (13) are located at the large end of the grinding roller, the small single-row conical bearings (7) are located at the small end of the grinding roller, an adjusting gasket (10) and a shaft end pressing plate (11) for adjusting bearing play are arranged at the tail end of the grinding roller shaft (8), the thickness of the adjusting gasket (10) is 0-0.05 smaller than the gap between the end face of the grinding roller shaft (8) and the shaft end pressing plate (11), the shaft end pressing plate (11) is provided with a sensor (9) for detecting the temperature and vibration of the grinding roller, the roller sleeve (2) is fixed on the outer side of the hub (1) through the pressing component, the sealing component is installed between the hub (1) and the hub (21), the sealing component is installed on the outer side of the hub (1), the sealing component is close to the outer lip (17) of the sealing component and the sealing component (16) is arranged on the outer side of the roller shaft sleeve, and the sealing component (16) is close to the inner lip sealing component (16) and the sealing component (16) is arranged on the outer shaft sealing frame, and the sealing component is close to the outer sealing frame (16, and the sealing component is used for sealing opening and is arranged on the inner sealing opening, and is sealed opening sealing opening and is sealed 16, the two oil seals (16) are in contact with the shaft sleeve (17), the sealing frame (15) is arranged on the rocker arm (21), the sealing frame (15) is provided with an air inlet hole (15 a), the part of the sealing frame (15) close to the transparent cover (14) is provided with a rigid sealing ring (15 b), and the sealing ring (15 b) and the transparent cover (14) form an annular gap of 1-3 mm.
  2. 2. Grinding roller device for vertical roller mill according to claim 1, characterized in that the hub (1) is externally provided with a conical surface (1 a) and a cylindrical surface (1 b), the conical angle of the conical surface (1 a) is 15 ° -25 °, a U-shaped groove is arranged between the conical surface (1 a) and the cylindrical surface (1 b), the inside of the hub is also provided with a groove, the hole in the hub at the position where the bearing is mounted is provided with a first spigot (1 d) and a second spigot (1 e) for positioning, respectively for axial positioning of the outer ring of the single row conical bearing.
  3. 3. Grinding roller device for vertical roller mill according to claim 1, characterized in that the roller sleeve (2) is fixed on the outside of the hub (1) by means of a pressing assembly comprising a pressing ring (4), a stud (3), a nut (5), the conical surface of the pressing ring (4) being combined with the conical surface of the roller sleeve (2) and being fixed by means of the stud (3), the outside of the nut (5) being provided with a protective sleeve (6), the shape of the roller sleeve (2) being a cone roller, a tyre roller or a column roller.
  4. 4. Grinding roller device for vertical roller grinding according to claim 1, characterized in that the sensor (9) is a temperature and vibration integrated sensor arranged on the plane of the inner bore of the shaft end pressing plate (11).
  5. 5. Grinding roller device for vertical roller mill according to claim 1, characterized in that the end face of the hub is provided with a horn sleeve (12), the horn sleeve (12) is of a half-structure, and the horn sleeve (12) is provided with a material leakage hole (12 a) so that the material entering the horn sleeve can be discharged from the material leakage hole, and the abrasion of dust to the hub is reduced.
  6. 6. Grinding roller device for vertical roller mill according to claim 1, characterized in that the oil seal position on the grinding roller shaft (8) is provided with an oil hole (8 b), and an air hole (8 c) for air ventilation and sensor wire placement is also provided along the axial direction of the grinding roller shaft (8).
  7. 7. A mounting method of an adjusting gasket of a grinding roller device for a vertical roller mill according to claim 1 is characterized in that an inner ring of a small single-row conical bearing (7) is mounted on a grinding roller shaft (8), a shaft end pressing plate (11) is mounted and bolts are screwed down to enable the bearing to be mounted in place, the shaft end pressing plate (11) is dismounted, the difference between the height of the end of the grinding roller shaft and the end face of the inner ring of the single-row conical bearing is measured, a group of adjusting gaskets (10) are mounted on the end face of the grinding roller shaft (8), the thickness of the adjusting gaskets (10) is 0-0.05 mm smaller than the gap between the end face of the grinding roller shaft (8) and the shaft end pressing plate (11), and the shaft end pressing plate (11) is mounted and the bolts are screwed down.

Description

Grinding roller device for vertical roller mill and installation method of adjusting gasket of grinding roller device Technical Field The invention relates to a grinding roller device for a vertical roller mill and a mounting method of an adjusting gasket of the grinding roller device. Background The grinding roller is a core component of the vertical mill, materials are crushed under strong pressure of the grinding roller, and the grinding roller rotates around a grinding roller shaft under the rotation drive of the grinding disc. Conventional grinding roller devices generally employ a combined configuration method of "cylindrical roller bearings and double-row tapered roller bearings" or "cylindrical bearings+double-row aligning bearings", which are costly for some small-sized grinding rollers. In addition, the service life of the two bearings is quite different, and the bearing close to the large end of the grinding roller is generally damaged firstly, so that generated impurities enter the other bearing, and further damage is caused, and certain waste is caused. The new configuration structure of the CN201910501348.1 grinding roller bearing provides a configuration method of a double-row tapered roller bearing and a cylindrical bearing, which is very suitable for the grinding roller bearing the larger roller pressure, but the cost of the grinding roller bearing the smaller roller pressure is higher. Disclosure of Invention The invention aims to solve the technical problem of providing a grinding roller device for a vertical roller mill and a mounting method of an adjusting gasket thereof, which are used for prolonging the service life of a grinding roller bearing and reducing the cost of the grinding roller. In order to solve the technical problems, the technical scheme includes that the grinding roller device for the vertical roller mill comprises a grinding roller shaft, a bearing, a hub, a roller sleeve, a pressing component and a sealing component, wherein two single-row conical bearings are arranged between the grinding roller shaft and the hub, an adjusting gasket and a shaft end pressing plate for adjusting the clearance of the bearing are arranged at the tail end of the grinding roller shaft, a sensor for detecting the temperature and vibration of the grinding roller is arranged on the shaft end pressing plate, the roller sleeve is fixed on the outer side of the hub through the pressing component, the sealing component is arranged between the hub and a rocker arm, the sealing component comprises a through cover, a shaft sleeve, two oil seals and a sealing frame, the two oil seals are arranged in the through cover, an oil seal lip which is used for preventing oil and is close to the bearing faces inwards, an oil seal lip which is used for preventing dust is close to the outside faces outwards, the shaft sleeve is sleeved on the grinding roller shaft, the two oil seals are in contact with the shaft sleeve, the sealing frame is arranged on the rocker arm, a rigid sealing ring is arranged on the sealing frame, and an annular clearance of 1-3mm is formed between the sealing ring and the through cover. The two single-row conical bearings comprise a large single-row conical bearing and a small single-row conical bearing, the large single-row conical bearing and the small single-row conical bearing are installed in a back-to-back mode, the large single-row conical bearing is located at the large end of the grinding roller, and the small single-row conical bearing is located at the small end of the grinding roller. The outer part of the hub is provided with a conical surface and a cylindrical surface, the cone angle of the conical surface is 15 degrees to 25 degrees, a U-shaped groove is formed in the middle of the conical surface and the cylindrical surface, the inner part of the hub is also provided with a groove, and a first spigot and a second spigot which are positioned are arranged in a hole in the position where the bearing is arranged in the hub and are respectively used for axially positioning the outer ring of the single-row conical bearing. The roller sleeve is fixed on the outer side of the hub through a pressing component, the pressing component comprises a pressing ring, a double-end stud and a nut, the conical surface of the pressing ring is combined with the conical surface of the roller sleeve and is fixed through the double-end stud, a protective sleeve is arranged outside the nut, and the roller sleeve is in the shape of a conical roller, a tire roller or a column roller. The sensor is a temperature and vibration integrated sensor and is arranged on the plane of the inner hole of the shaft end pressing plate. The horn sleeve is arranged on the end face of the hub, the horn sleeve is of a half-and-half structure, and the material leakage holes are formed in the horn sleeve, so that materials entering the horn sleeve can be discharged from the material leakage holes, and abrasion of dust