Fan with bearing capable of preventing tobacco tar from invading

Abstract

The utility model relates to the technical field of fans, in particular to a fan with a bearing capable of preventing tobacco tar from invading, which comprises a fan box body, a wind collector, a bearing shell, a bearing, a main shaft, an impeller, a through cover and a sealing ring, the fan box body is provided with an air inlet and an air outlet; the bearing shell is provided with an inlaying position, light and tight fit is achieved, the through cover is tightly embedded into the inlaying position of the bearing shell, the bearing shell is seamless and compact, a concentric hole is designed in the bottom end of the through cover, a sealing ring is installed, when the fan is used, fluid enters from an air inlet, passes through a flow field and overflows the bearing, and due to the fact that the bearing is additionally provided with the through cover, tobacco tar and steam cannot invade into the bearing; according to the draught fan, oil smoke and moisture can be prevented from invading the bearing on the draught fan, the service life of the bearing is prolonged, and various operation faults caused by damage to the bearing during operation of the draught fan are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan with a bearing for preventing the intrusion of smoke oil. Background Art

[0002] Box fans are usually used to extract oil fume. Existing box fans generally increase the gas pressure and discharge the gas by the rotation of the impeller. The impeller is fixed on the main shaft, and the main shaft is connected to the inside of the fan through a bearing.

[0003] At present, the general fan industry does not have effective measures to prevent the intrusion of oil fume into the bearings of box fans with built-in bearings, resulting in the bearings being contaminated by impurities such as oil fume, greatly reducing the various performances of the bearings and shortening the service life. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fan with a bearing for preventing the intrusion of smoke oil, which can avoid the intrusion of oil fume and moisture into the bearing on the fan and improve the service life of the bearing.

[0005] To achieve the above purpose, the utility model provides a fan with a bearing for preventing the intrusion of smoke oil, including a fan housing, an air collector, a bearing housing, a bearing, a main shaft, an impeller, a through cover and a sealing ring;

[0006] The fan housing has an air inlet and an air outlet, and the air inlet and the air outlet are respectively located on both sides of the fan housing; the air collector is arranged inside the fan housing; the bearing housing is fixedly connected to the air collector and is located inside the air collector. The bearing housing has an inlay position, and the inlay position is on the side of the bearing housing; the outer ring of the bearing is fixedly connected to the bearing housing and is located inside the bearing housing; the main shaft is fixedly connected to the inner ring of the bearing and is located inside the bearing; the impeller is fixedly connected to the main shaft and is located on the side of the main shaft; the through cover is arranged in the inlay position, and the sealing ring is arranged between the through cover and the main shaft.

[0007] Among them, the fan with a bearing for preventing the intrusion of smoke oil further includes a blind cover; the blind cover is arranged on the side of the bearing housing.

[0008] Among them, the bearing housing has an inlay position, and the inlay position is on the side of the bearing housing, and the inlay position is adapted to the through cover.

[0009] Among them, the sealing ring has a groove, and the groove is located on the outer side of the sealing ring.

[0010] Among them, the inner diameter of the sealing ring is 0.3 mm smaller than the shaft diameter of the main shaft.

[0011] A fan with a bearing that prevents the intrusion of smoke oil according to the present utility model. An inlay position is provided on the bearing housing, and it is a light press fit. The through cover is tightly embedded in the inlay position of the bearing housing to make it seamless and compact. A concentric hole is designed at the bottom end of the through cover, and the sealing ring is installed. When the fan is in use, the fluid enters from the air inlet, passes through the flow field, and floods over the bearing. Since the through cover is installed on the bearing, smoke oil and water vapor cannot invade the interior of the bearing. In this way, it is possible to prevent the intrusion of oil fume and moisture into the bearing on the fan, improve the service life of the bearing, and avoid various operating failures of the fan when the bearing is damaged during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0013] Figure 1 is a schematic structural diagram of an existing box-type fan.

[0014] Figure 2 is Figure 1 a cross-sectional view taken along A-A.

[0015] Figure 3 is a schematic structural diagram of the whole of the present utility model.

[0016] Figure 4 is Figure 3 a cross-sectional view taken along B-B.

[0017] Figure 5 is Figure 4 a partial enlarged view of Detail A.

[0018] Figure 6 is Figure 4 a partial enlarged view of Detail B.

[0019] Figure 7 is Figure 6 a partial enlarged view of Detail C.

[0020] 1 - fan housing, 2 - air collector, 3 - bearing housing, 4 - bearing, 5 - main shaft, 6 - impeller, 7 - through cover, 8 - sealing ring, 9 - air inlet, 10 - air outlet, 11 - blind cover, 12 - groove, 13 - fluid, 14 - flow field A, 15 - flow field B, 16 - inlay position. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Please refer to Figures 1 - 7 , wherein, Figure 1 is a schematic structural diagram of an existing box-type fan, Figure 2 is Figure 1 a cross-sectional view taken along A-A, Figure 3It is a schematic diagram of the overall structure of the present utility model. Figure 4 It is Figure 3 A sectional view along B-B. Figure 5 It is Figure 4 An enlarged partial view of detail A. Figure 6 It is Figure 4 An enlarged partial view of detail B. Figure 7 It is Figure 6 An enlarged partial view of detail C.

[0022] The present utility model provides a fan with a bearing 4 that prevents the intrusion of smoke oil, including a fan housing 1, an air collector 2, a bearing housing 3, a bearing 4, a main shaft 5, an impeller 6, a through cover 7, a sealing ring 8, and a blind cover 11; through the foregoing solution, the intrusion of oil fume and moisture into the bearing 4 on the fan can be avoided, and the service life of the bearing 4 can be extended.

[0023] For this specific embodiment, the fan housing 1 has an air inlet 9 and an air outlet 10, and the air inlet 9 and the air outlet 10 are respectively located on both sides of the fan housing 1; the air collector 2 is arranged inside the fan housing 1; the bearing housing 3 is fixedly connected to the air collector 2 and is located inside the air collector 2. The bearing housing 3 has an inlay position 16, and the inlay position 16 is located on the side of the bearing housing 3; the outer ring of the bearing 4 is fixedly connected to the bearing housing 3 and is located inside the bearing housing 3; the main shaft 5 is fixedly connected to the inner ring of the bearing 4 and is located inside the bearing 4; the impeller 6 is fixedly connected to the main shaft 5 and is located on the side of the main shaft 5; the through cover 7 is arranged in the inlay position 16, and the sealing ring 8 is arranged between the through cover 7 and the main shaft 5. The connection methods and operating processes of the fan housing 1, the air collector 2, the bearing housing 3, the bearing 4, the main shaft 5, and the impeller 6 in this application are the same as those of the existing box-type fan. For a better understanding of the present utility model, please refer to Figures 1 - 2, the operation mode of the existing box fan will still be described below: The two cavities on both sides inside the fan box body 1 are negative pressure flow fields. The fluid 13 enters from the air inlet 9, passes through the flow field A14, floods over the bearing 4, is collected by the air collector 2, and the fluid 13 enters the flow field B15 and is discharged from the air outlet 10 through the outlet angle of the impeller 6. Since the bearing 4 is naked and is the original bearing 4 when leaving the factory, the bearing 4 is infiltrated and wrapped by smoke, water vapor, and seeps into the inside of the bearing 4 from various gaps in the bearing 4; after the oil mist enters the inside of the bearing 4, it will become viscous, aged, and condensed, hindering the normal operation of the bearing 4, increasing the torque, increasing the power consumption of the power, and then damaging the bearing 4; at the same time, the moisture and humidity of the water vapor also cause great damage to the bearing 4. In addition to carrying a large amount of impurity molecules such as oil molecules, the fluid 13 also carries a large amount of water molecules. The corrosion of water vapor to ordinary metals is very large, and the water molecules will invade the inside of the bearing 4 from the gaps of the bearing 4, causing rust and damage to the inner ring of the bearing 4, the outer ring of the bearing 4, and the steel balls of the bearing 4, seriously affecting the normal use and life of the bearing 4. Please refer to Figures 3 - 7 , an inlay position 16 is provided on the bearing housing 3 with a light and tight fit. The through cover 7 is tightly embedded in the inlay position 16 of the bearing housing 3 to make it seamless and compact. A concentric hole is designed at the bottom end of the through cover 7 to install the sealing ring 8. The operation process of the present invention is as follows: The fluid 13 enters from the air inlet 9, passes through the flow field A14, floods over the bearing 4. Since the through cover 7 is installed on the bearing 4, the smoke oil and water vapor cannot invade the inside of the bearing 4. By the above method, it is possible to prevent the oil fume, moisture, and mist from invading the bearing 4 on the fan, improve the service life of the bearing 4, and avoid various operation failures of the fan when the bearing 4 is damaged during operation.

[0024] Among them, the blind cover 11 is arranged on the side of the bearing housing 3. According to the different connection positions of the bearing 4 and the main shaft 5, please refer to Figure 6 , when the bearing 4 is not connected to the end of the main shaft 5, the through cover 7 and the sealing ring 8 can be respectively arranged on both sides of the bearing 4 for sealing; please refer to Figure 5 , when the bearing 4 is connected to the end of the main shaft 5, the end of the main shaft 5 is basically flush with the end face of the inner ring of the bearing 4. Then, the through cover 7 and the sealing ring 8 are used on one side of the bearing 4, and the blind cover 11 is installed on the other side for sealing. The inlay position process of the blind cover 11 is the same as that of the through cover 7.

[0025] At the same time, the sealing ring 8 has a groove 12, and the groove 12 is located outside the sealing ring 8. A concentric hole is designed at the bottom end of the through cover 7 to install the sealing ring 8. The outer ring of the sealing ring 8 is cast with a groove 12, and the width of the groove 12 is slightly smaller than the thickness of the material of the through cover 7 to make it tightly seamless.

[0026] In addition, the inner diameter of the sealing ring 8 is 0.3 mm smaller than the shaft diameter of the main shaft 5. The mouth of the sealing ring 8 is designed with double lips, which makes the contact with the main shaft 5 seamless and fatigue-resistant.

[0027] When the present utility model is in use, an inlay position 16 is provided on the bearing housing 3 with a light press fit. The through cover 7 is tightly embedded in the inlay position 16 of the bearing housing 3 to make it seamless and compact. A concentric hole is designed at the bottom end of the through cover 7 to install the sealing ring 8. A groove 12 is cast on the outer circle of the sealing ring 8, and the width of the groove 12 is slightly smaller than the material thickness of the through cover 7 to make it tightly seamless. The inner diameter of the sealing ring 8 is 0.3 mm smaller than the shaft diameter of the main shaft 5, and the mouth is designed with double lips, which makes the contact with the main shaft 5 seamless and fatigue-resistant. The operation process of the present utility model is as follows: The fluid 13 enters from the air inlet 9, passes through the flow field A14, and floods the bearing 4. Since the through cover 7 is installed on the bearing 4, smoke oil and water vapor cannot invade the inside of the bearing 4. According to the different connection positions of the bearing 4 and the main shaft 5, please refer to Figure 6 , when the bearing 4 is not connected to the end of the main shaft 5, the through cover 7 and the sealing ring 8 can be respectively arranged on both sides of the bearing 4 for sealing; please refer to Figure 5 , when the bearing 4 is connected to the end of the main shaft 5, the shaft end of the main shaft 5 is basically flush with the end face of the inner ring of the bearing 4. Then, the through cover 7 and the sealing ring 8 are adopted on one side of the bearing 4, and the blind cover 11 is installed on the other side for sealing. The inlay process of the blind cover 11 is the same as that of the through cover 7. By the above method, it is possible to prevent oil fume and moisture from invading the bearing 4 on the fan, improve the service life of the bearing 4, and avoid various operation failures of the fan during operation due to damage to the bearing 4.

[0028] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A fan with a bearing that prevents smoke oil from intruding, characterized in that: It includes a fan housing, a wind collector, a bearing housing, a bearing, a main shaft, an impeller, a through cover and a sealing ring; The fan housing has an air inlet and an air outlet, and the air inlet and the air outlet are respectively located on both sides of the fan housing; the air collector is arranged inside the fan housing; the bearing housing is fixedly connected to the air collector and is located on the inner side of the air collector, and the bearing housing has an embedding position, and the embedding position is on the side of the bearing housing; the outer ring of the bearing is fixedly connected to the bearing housing and is located on the inner side of the bearing housing; the main shaft and the inner ring of the bearing are fixedly connected and are located on the inner side of the bearing; the impeller is fixedly connected to the main shaft and is located on the side of the main shaft; the through cover is arranged in the embedding position, and the sealing ring is arranged between the through cover and the main shaft.

2. A fan with a smoke oil intrusion prevention bearing as claimed in claim 1, characterized in that: The fan with a smoke oil intrusion prevention bearing also includes a blind cover; the blind cover is arranged on the side of the bearing housing.

3. A fan with a smoke oil intrusion-proof bearing as claimed in claim 2, characterized in that: The sealing ring has a groove, and the groove is located outside the sealing ring.

4. A fan with a smoke oil intrusion-proof bearing as claimed in claim 3, characterized in that: The inner diameter of the sealing ring is 0.3 mm smaller than the shaft diameter of the main shaft.

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