Centrifugal fan shaft end sealing structure

Abstract

The utility model discloses a fan shaft end sealing structure which comprises a rotary oil seal structure which is arranged on the inner end face of a shaft end connecting structure. The problem that an existing centrifugal fan shaft end sealing structure is prone to aging and damage is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan shaft end sealing field, especially a centrifugal fan shaft end sealing structure. BACKGROUND

[0002] The commonly used centrifugal fan is high in rotating speed, long in running time (partly consistent with the running time of the cement kiln), and the bearing box two ends are disc root sealed, which is easy to age and seriously leak oil.

[0003] Not only increase production cost and pollute the environment, but also cause equipment damage and affect main equipment downtime due to poor lubrication, and there are safety hazards.

[0004] In order to solve the above problems, the existing disc root sealing structure needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model discloses a centrifugal fan shaft end sealing structure, which solves the problem of easy aging and damage of the existing centrifugal fan shaft end sealing structure.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A centrifugal fan shaft end sealing structure, comprising a rotating oil seal structure, the rotating oil seal structure is arranged at the inner end face of the shaft end connecting structure.

[0008] The original disc root sealing is changed into a rotating oil seal structure, which solves the problem of fan oil leakage caused by the easy aging and damage of the centrifugal fan shaft end sealing structure, reduces the labor intensity of the post personnel caused by frequent oil supplement, and eliminates the equipment accidents caused by poor equipment lubrication.

[0009] As a further optimization of the utility model, the rotating oil seal structure comprises a matching part, a metal framework and a sealing structure part arranged in sequence from the outer surface to the inner surface, the sealing structure part is provided with a dustproof lip at one end facing the outside of the shaft end connecting structure, the bottom of one end of the sealing structure part facing the inside of the shaft end connecting structure is provided with a sealing lip, and the top surface of one end of the sealing structure part facing the inside of the shaft end connecting structure is further provided with a pressing spring.

[0010] When the rotating oil seal structure is used for sealing, the dustproof lip plays a dustproof role, and there is an oil film between the sealing lip mouth and the centrifugal fan shaft surface, which plays an oil seal sealing function.

[0011] As a further optimization of the utility model, the dustproof lip comprises a lip body part and a rubber close contact part, and the rubber close contact part is located at the inner end of the lip body part.

[0012] The rubber close part of the dustproof lip is attached to the surface of the shaft of the centrifugal fan, and better dustproof effect is achieved, and even if the shaft is slightly deviated, the lip body part will not be contacted, so that hard contact is avoided, and the dustproof lip is prevented from being damaged due to slight vibration or deviation of the shaft of the fan.

[0013] As a further optimization of the utility model, the lip body part comprises a fixed section and an elastic section, the inner end of the fixed section is provided with a plug-in groove, the outer end of the elastic section is provided with a plug-in block matched with the plug-in groove, and the elastic section is positioned by a screwing type positioning mechanism arranged at the inner end of the elastic section.

[0014] The length of the lip body part can be adjusted according to the shaft, and better adaptability is achieved.

[0015] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0016] 1. The original packing seal is replaced by the rotary oil seal structure, the oil leakage problem of the fan caused by the easy aging and damage of the sealing structure of the shaft end of the centrifugal fan is solved, the labor intensity of the post personnel caused by frequent oil supplement is reduced, and the equipment accidents caused by poor lubrication of the equipment are eliminated.

[0017] 2. When the rotary oil seal structure is used for sealing, the dustproof lip plays a dustproof role, and there is an oil film between the lip mouth of the sealing lip and the surface of the shaft of the centrifugal fan, so that the oil seal function is achieved.

[0018] 3. The rubber close part of the dustproof lip is attached to the surface of the shaft of the centrifugal fan, and better dustproof effect is achieved, and even if the shaft is slightly deviated, the lip body part will not be contacted, so that hard contact is avoided, and the dustproof lip is prevented from being damaged due to slight vibration or deviation of the shaft of the fan.

[0019] 4. The length of the lip body part can be adjusted according to the shaft, and better adaptability is achieved. DRAWINGS

[0020] Figure 1 It is a structural schematic view of the utility model.

[0021] Figure 2 It is a sectional view of the rotary oil seal structure of the utility model.

[0022] Figure 3 It is a structural schematic view of the dustproof lip of the utility model. CONCRETE IMPLEMENTING METHOD

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0026] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Specific embodiment 1

[0030] Figure 1 、 Figure 2 、 Figure 3 A centrifugal fan shaft end sealing structure is shown, comprising a rotating oil seal structure 1 arranged at the inner end face of a shaft end connecting structure 2.

[0031] The original packing seal is replaced by the rotating oil seal structure to solve the problem of fan oil leakage caused by the easy aging and damage of the centrifugal fan shaft end sealing structure, reduce the labor intensity of the post personnel caused by frequent oil replenishment, and eliminate the equipment accidents caused by poor equipment lubrication. Specific embodiment 2:

[0033] This embodiment is a further description of the rotating oil seal structure 1 based on the specific embodiment 1, which comprises a matching part 11, a metal skeleton 12 and a sealing structure part 13 arranged in turn from the outer surface to the inner surface, the sealing structure part 13 is provided with a dustproof lip 3 at one end facing the outside of the shaft end connecting structure 2, the sealing structure part 13 is provided with a sealing lip 4 at the bottom of one end facing the inside of the shaft end connecting structure 2, and the top surface of the sealing structure part 13 is also provided with a pressing spring 5.

[0034] When sealed with the rotating oil seal structure, the dustproof lip plays a dustproof role, and there is an oil film between the sealing lip and the surface of the centrifugal fan shaft, which plays the function of oil seal sealing. Specific embodiment 3:

[0036] This embodiment is a further description of the dustproof lip 3 based on the specific embodiment 1, which comprises a lip body part 31 and a rubber close-fitting part 32, and the rubber close-fitting part 32 is located at the inner end of the lip body part 31.

[0037] The rubber close-fitting part of the dustproof lip is attached to the surface of the centrifugal fan shaft, which plays a better dustproof effect, and even if the shaft has a small deviation, it will not contact the lip body part, so there will be no hard contact, which can avoid the damage of the dustproof lip due to the small vibration or deviation of the shaft of the fan. Specific embodiment 4:

[0039] This embodiment is a further description of the lip body part 31 based on the specific embodiment 3, which comprises a fixed segment 311 and a telescopic segment 312, the inner end of the fixed segment 311 is provided with a plug-in slot, the outer end of the telescopic segment is provided with a plug-in block matched with the plug-in slot, and the telescopic segment 312 is positioned by a screwing type positioning mechanism 7 arranged at the inner end of the telescopic segment 312, and the outer end of the screwing type positioning mechanism 7 is threadedly connected with the fixed segment 311.

[0040] The length of the lip body part can be adjusted according to the shaft, which is more adaptive.

[0041] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A centrifugal fan shaft end seal structure, characterized by: The application relates to a rotating oil seal structure (1) arranged at the inner end face of a shaft end connecting structure (2). The rotating oil seal structure (1) comprises a matching part (11), a metal framework (12) and a sealing structure part (13) arranged in sequence from the outer surface to the inner surface, the sealing structure part (13) is provided with a dustproof lip (3) at the end away from the shaft end connecting structure (2), the bottom of the end of the sealing structure part (13) towards the shaft end connecting structure (2) is provided with a sealing lip (4), and the top surface of the end of the sealing structure part (13) towards the shaft end connecting structure (2) is further provided with a pressing spring (5).

2. The centrifugal fan shaft end seal structure of claim 1, wherein: The dustproof lip (3) comprises a lip body part (31) and a rubber close-fitting part (32), and the rubber close-fitting part (32) is located at the inner end of the lip body part (31).

3. The centrifugal fan shaft end seal structure of claim 2, wherein: The lip body part (31) comprises a fixed section (311) and an expansion section (312), the inner end of the fixed section (311) is provided with a plug-in groove, the outer end of the expansion section is provided with a plug-in block matched with the plug-in groove, the expansion section (312) is positioned through a screwing type positioning mechanism (7) arranged at the inner end of the expansion section (312), and the outer end of the screwing type positioning mechanism (7) is threadedly connected with the fixed section (311).

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