Bearing seat device convenient for replacing lubricating grease

Abstract

The utility model discloses a bearing seat device convenient for replacing lubricating grease, which comprises a bearing chamber and a carrier roller bearing (1) assembled in the bearing chamber, and is characterized in that the bearing chamber forms a sealing mechanism on a sealing surface of a carrier roller of a coal feeder by utilizing an oil seal (2), and the inside of the bearing chamber is filled with the lubricating grease through an oil injection nozzle (3); and the carrier roller bearing (1) is matched with lubricating grease to form a non-self-sealing bearing. On one hand, the bearing can be well lubricated, the service life of parts such as a carrier roller and a belt is prolonged, on the other hand, the sealing effect is good, impurities such as coal powder and dust are effectively prevented from entering the bearing, safe operation of the coal feeder is guaranteed, and the maintenance workload and the spare part cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing seals, in particular to a bearing seat device which is convenient for replacing lubricating grease. Background Art

[0002] A coal feeder is a mechanical device that accurately adjusts the coal feed rate to the pulverizer according to load requirements. It is typically located between the raw coal hopper and the pulverizer, ensuring that the coal feed rate is directly aligned with the boiler load. Its operating principle involves coal entering the feeder from the coal storage bin through a coal gate. An internal conveyor belt continuously and evenly transports coal to the pulverizer. An electronic weighing device is installed beneath the conveyor belt. This device uses a high-precision electronic belt scale and belt speed signals detected by a speed sensor to calculate the instantaneous flow rate and accumulated flow.

[0003] The coal feeder roller is a functional component that supports the conveying metering belt and guides the running direction of the conveying metering belt. Its two ends are supported by bearings located in the bearing chamber. It plays an important role in ensuring the normal operation of the conveying metering belt, improving coal transportation efficiency and reducing production costs.

[0004] At present, the self-sealing bearings of the coal feeder roller bearings are generally selected as the 6204-2Z type, and the bearing chamber sealing form adopts the sealant to stick the felt seal. The specific structure is as follows Figure 1 shown

[0005] However, the above structure has the following drawbacks during operation:

[0006] 1. Since the roller bearing chamber and the coal feeder cylinder are sealed with felt, the sealing effect is poor, which can easily cause coal powder to enter the roller bearing chamber and bearing of the coal feeder. Once the coal powder enters, it will cause the bearing to be damaged and stuck. The rotation between the inner ring of the bearing and the roller shaft will change to relative sliding, causing the inner ring of the bearing and the coal feeder roller to wear, affecting the operation of the coal feeder equipment;

[0007] 2. During the operation, the roller bearings use self-sealing bearings and cannot be re-lubricated during operation. As a result, the bearings lack grease inside for a long time, causing dry grinding of the bearings, thus shortening the service life of the coal feeder roller bearings.

[0008] 3. After the roller bearing is damaged, the roller cannot rotate, causing the coal feeder belt and the roller to slide relative to each other instead of rotating, which increases the wear of the coal feeder belt and shortens the service life of the coal feeder belt;

[0009] 4. The failure rate of roller bearings is high and the service life is short. Once damaged, the coal feeder needs to be shut down for replacement. This affects the conveying efficiency of the coal feeder and increases maintenance costs and workload significantly. Utility Model Content

[0010] In response to the defects in the existing technology, the utility model provides a bearing seat device that is easy to replace grease. On the one hand, it can ensure that the bearings are well lubricated and extend the service life of components such as rollers and belts. On the other hand, it has an excellent sealing effect and can prevent impurities such as coal powder and dust from entering the bearings to a limited extent. It is beneficial to ensure the safe operation of the coal feeder, reduce maintenance workload and spare parts costs, have good economic benefits, and can be promoted and used on a large scale.

[0011] In order to achieve the above-mentioned purpose, the specific technical solutions adopted by the present utility model are as follows:

[0012] A bearing seat device that is convenient for replacing grease comprises a bearing chamber and a roller bearing (1) assembled in the bearing chamber. The key points of the bearing seat device are as follows: the bearing chamber forms a sealing mechanism on the sealing surface of a coal feeder roller by using an oil seal (2), and grease is added to the interior of the bearing chamber through an oiling nozzle (3); and the roller bearing (1) is configured as a non-self-sealing bearing in combination with the grease.

[0013] Furthermore, the bearing seat device also includes a bearing seat body (7) and a closed end cover, the center of the bearing seat body (7) is provided with a bearing assembly hole, and the hole wall of the bearing assembly hole and the closed end cover together enclose the bearing chamber.

[0014] Furthermore, the oiling nozzle (3) is provided on the closed end cover.

[0015] Furthermore, the closed end cover is detachably connected to the bearing seat body (7) via bolts (6).

[0016] Furthermore, a section of the bearing assembly hole is radially protruded outward to form a boss, and the roller bearing (1) is restricted between the table surface of the boss and the coal feeder roller by a first retaining spring (5) and a second retaining spring (8).

[0017] Furthermore, a shaft sleeve (4) is sleeved on the coal feeder roller relative to the oil seal (2).

[0018] Furthermore, the oil seal (2) adopts a specification of Skeleton oil seal of GB / T13871.

[0019] Furthermore, the roller bearing (1) adopts a deep groove ball bearing of model 6204.

[0020] Compared with the prior art, the remarkable effects of the present invention are:

[0021] (1) The utility model provides a better lubrication effect to the bearing by regularly adding grease from the outside, and the contact part with the roller sealing surface can achieve a good sealing effect by utilizing the oil seal and the oil film formed by the grease;

[0022] (2) By adopting a non-self-sealing bearing and combining it with the design of a grease nozzle, the utility model can conveniently replenish grease during the operation of the bearing, thereby avoiding the dry grinding phenomenon caused by the long-term lack of grease in the bearing and significantly improving the service life of the bearing;

[0023] (3) The use of oil seal and shaft sleeve not only further enhances the sealing effect and effectively prevents impurities such as coal powder and dust from entering the bearing, but also reduces the wear of the bearing and the coal feeder belt, ensuring the stable operation of the coal feeder;

[0024] (4) The design of the bearing assembly hole takes into account the installation and fixation of the bearing. Through the cooperation of the boss, the first retaining spring and the second retaining spring, the roller bearing can be firmly installed in the bearing chamber, avoiding failure caused by loosening of the bearing during operation;

[0025] (5) The bearing seat device of the utility model adopts a modular design, and the closed end cover is connected to the bearing seat body by bolts, so that when the bearing needs to be repaired or replaced, it can be disassembled and installed conveniently and quickly, greatly reducing the maintenance workload;

[0026] (7) The utility model also has good versatility and scalability, and the bearing model, oil seal specifications, etc. can be adjusted according to actual needs to meet the use requirements of different coal feeders. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0028] Figure 1 This is a schematic diagram of the structure of the bearing chamber of the coal feeder roller in the prior art;

[0029] Figure 2 Schematic diagram of the overall structure of the bearing seat device in Example 1;

[0030] Numbers in the figure: 1- roller bearing, 2- oil seal, 3- oil nozzle, 4- sleeve, 5- first retaining spring, 6- bolt, 7- bearing seat body, 8- second retaining spring. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0032] In the description of the present invention, it should be understood that the terms "length," "width," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, in the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0033] Figure 1 The first embodiment of the utility model is shown: a bearing seat device that is easy to replace grease, including a bearing chamber and a roller bearing 1 assembled in the bearing chamber. The bearing chamber uses an oil seal 2 to form a sealing mechanism on the sealing surface of the coal feeder roller, and grease is added to its interior through an oiling nozzle 3; the roller bearing 1 is configured as a non-self-sealing bearing in combination with the grease.

[0034] In a specific embodiment, the bearing seat assembly further includes a bearing seat body 7 and a closed end cap. A bearing assembly hole is defined in the center of the bearing seat body 7. The walls of the bearing assembly hole and the closed end cap together enclose the bearing chamber. The closed end cap is provided with the grease nipple 3. The closed end cap is detachably connected to the bearing seat body 7 via bolts 6.

[0035] In order to ensure the stable installation of the roller bearing, a section of the bearing assembly hole is radially protruded outward to form a boss, and the roller bearing 1 is restricted between the table surface of the boss and the coal feeder roller by the first retaining spring 5 and the second retaining spring 8.

[0036] In order to extend the sealing surface of the coal feeder roller, a shaft sleeve 4 is sleeved on the coal feeder roller relative to the oil seal 2.

[0037] In this embodiment, the oil seal 2 adopts a specification of The skeleton oil seal of GB / T13871. The roller bearing 1 adopts a deep groove ball bearing of model 6204.

[0038] Specifically, the models and specifications of the components involved in this embodiment are shown in Table 1:

[0039]

[0040] Table 1

[0041] In summary, the utility model can obtain better lubrication effect of the bearing by regularly adding grease from the outside, and the contact part with the roller sealing surface can use the oil seal and the oil film formed by the grease to achieve a good sealing effect; by adopting non-self-sealing bearings and combining the design of the oil filling nozzle, the utility model can conveniently replenish the grease during the operation of the bearing, thereby avoiding the dry grinding phenomenon caused by long-term lack of grease in the bearing and significantly improving the service life of the bearing; the use of the oil seal and the shaft sleeve not only further enhances the sealing effect, effectively prevents impurities such as coal powder and dust from entering the bearing, but also reduces the wear of the bearing and the coal feeder belt, ensuring The stable operation of the coal feeder is ensured; the design of the bearing assembly hole takes into account the installation and fixation of the bearing, and the cooperation of the boss, the first retaining spring and the second retaining spring makes the roller bearing can be firmly installed in the bearing chamber, avoiding the failure of the bearing caused by loosening during operation; the bearing seat device of the utility model adopts a modular design, and the closed end cover is connected to the bearing seat body by bolts, so that when the bearing needs to be repaired or replaced, it can be disassembled and installed conveniently and quickly, greatly reducing the maintenance workload; the utility model also has good versatility and scalability, and the bearing model, oil seal specifications, etc. can be adjusted according to actual needs to meet the use requirements of different coal feeders.

[0042] Finally, it should be noted that the technical solution disclosed above is only a preferred embodiment of the present invention, and of course it cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment are implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope covered by the utility model.

Claims

1. A bearing seat device for facilitating grease replacement, comprising a bearing chamber and a roller bearing (1) mounted in the bearing chamber, characterized in that: The bearing chamber forms a sealing mechanism on the sealing surface of the coal feeder roller by using an oil seal (2), and lubricating grease is added inside the bearing chamber through an oiling nozzle (3); the roller bearing (1) is configured as a non-self-sealing bearing in combination with the lubricating grease.

2. The bearing seat device for facilitating grease replacement according to claim 1, characterized in that: The bearing seat device further comprises a bearing seat body (7) and a closed end cover. A bearing assembly hole is provided at the center of the bearing seat body (7), and the hole wall of the bearing assembly hole and the closed end cover together enclose the bearing chamber.

3. The bearing seat device for facilitating grease replacement according to claim 2, characterized in that: The oiling nozzle (3) is provided on the closed end cover.

4. The bearing seat device for facilitating grease replacement according to claim 3, characterized in that: The closed end cover is detachably connected to the bearing seat body (7) via bolts (6).

5. The bearing seat device for facilitating grease replacement according to claim 4, characterized in that: A section of the bearing assembly hole is radially protruded outward to form a boss, and the roller bearing (1) is restricted between the table surface of the boss and the coal feeder roller by a first retaining spring (5) and a second retaining spring (8).

6. The bearing seat device for facilitating grease replacement according to claim 1 or 5, characterized in that: A shaft sleeve (4) is sleeved on the coal feeder roller relative to the oil seal (2).

7. The bearing seat device for facilitating grease replacement according to any one of claims 1 to 5, characterized in that: The oil seal (2) adopts a skeleton oil seal with a specification of φ25*φ52*7GB / T13871.

8. The bearing seat device for facilitating grease replacement according to claim 7, characterized in that: The roller bearing (1) adopts a deep groove ball bearing of model 6204.

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