Waterproof structure of fan for scrubber

Abstract

The utility model discloses a waterproof structure of a fan for a scrubber, which comprises a motor body hermetically mounted in a motor shell, the upper end of a motor shaft of the motor body is mounted in a bearing chamber of the motor shell in a relative rotation manner through a bearing, and the motor shaft penetrates through the bearing chamber and then extends to the upper end to be fixedly mounted and connected with a movable impeller; wherein the periphery of the motor shaft located at the outer end of the bearing chamber is sleeved with an oil seal, the periphery of the oil seal is sleeved with a fan shell and an oil seal gland fixedly embedded in the fan shell, the oil seal gland is used for sealing and fixing the oil seal, and the fan shell is fixedly installed and connected with the motor shell; according to the utility model, the problem of motor performance failure caused by external water vapor entering the bearing through the air inlet of the movable impeller can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the floor scrubber structure field, concretely relates to a waterproof structure of floor scrubber fan. BACKGROUND

[0002] The floor scrubber motor works in the condition of large water vapor, when the floor scrubber cleans the ground, a large amount of water enters the main fan inside, and the water entering the fan bearing of the floor scrubber often causes the failure of the fan bearing during use.

[0003] Therefore, the applicant hopes to seek technical solutions to solve the above technical problems. SUMMARY

[0004] Therefore, the utility model discloses a waterproof structure of floor scrubber fan, avoids the problem that external water vapor enters the bearing through the air inlet of the moving impeller and causes the performance failure of the motor.

[0005] The utility model adopts the technical scheme as follows:

[0006] A waterproof structure of floor scrubber fan, including motor body sealedly installed in the inside of motor casing, the motor shaft upper end of motor body is rotatably installed in the bearing chamber of motor casing through bearing, and extends to the fixed installation connection with moving impeller after penetrating the bearing chamber upward end, wherein, the outer periphery of motor shaft outside the bearing chamber is sleeved with oil seal, and the outer periphery of oil seal is sleeved with fan casing and oil seal gland fixedly embedded on the fan casing, the oil seal gland seals and fixes the oil seal, and the fan casing is tightly installed and connected with the motor casing.

[0007] Preferably, the oil seal gland is provided with a folded edge structure, which is in compression contact with the oil seal.

[0008] Preferably, the fan casing includes a gland mounting circular table at the inner periphery and a wind guide casing part at the outer periphery, and the gland mounting circular table is fixedly embedded with the oil seal gland.

[0009] Preferably, the gland mounting circular table includes a groove at the inner periphery and a plurality of embedded grooves at the outer periphery and spaced apart, the outer periphery of the oil seal gland is embedded in each embedded groove, and the inner periphery thereof is embedded with the groove; wherein, the folded edge structure is located at the inner periphery of the oil seal gland.

[0010] Preferably, the oil seal gland and the moving impeller adopt a clearance fit.

[0011] Preferably, the oil seal and the outer end of the bearing chamber are filled with sealing grease, so that the lip of the oil seal and the sealing grease are in sealing contact with the motor shaft.

[0012] Preferably, the oil seal adopts a rubber piece or a silica gel piece.

[0013] Preferably, the oil seal gland adopts an injection molding piece.

[0014] The application is provided with the oil seal outside the motor shaft of the bearing chamber, and then the oil seal is sealed and fixed by the oil seal gland embedded on the fan housing, and finally the sealing and fixed installation is realized by the fastening and installation connection of the fan housing and the motor housing, thereby obtaining the waterproof structure of the fan of the scrubber, avoiding the problem that the external water vapor enters the bearing through the inlet of the moving impeller, resulting in the performance failure of the motor; the application further fills the sealing grease between the oil seal and the outer end of the bearing chamber, so that the lip of the oil seal and the sealing grease are in sealing contact with the motor shaft, further increasing the waterproof performance of the bearing; even if the oil seal lip fails slightly, the sealing grease in the cavity still has certain waterproof performance, thereby further significantly improving the waterproof performance of the fan. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the waterproof structure of the fan of the scrubber in the specific embodiment of the utility model;

[0016] Figure 2 is Figure 1 a sectional view;

[0017] Figure 3 is Figure 1 an exploded structural schematic diagram;

[0018] Figure 4 is a structural schematic diagram of the fan housing in the specific embodiment of the utility model. DETAILED DESCRIPTION

[0019] The utility model discloses a kind of waterproof structures of fan of scrubber, including the motor body of sealing installation in the inside of motor housing, the motor shaft upper end of motor body is rotatably installed in the bearing chamber of motor housing by bearing, and it extends to with moving impeller fixed installation connection after penetrating bearing chamber upper end;Wherein, the motor shaft outer sleeve of located bearing chamber outer end is connected with oil seal, and the outer sleeve of oil seal is connected with fan housing and oil seal gland fixed embedded on fan housing, oil seal gland seals and fixes oil seal, and fan housing and motor housing fastening installation connection.

[0020] In order to make the person in this technology field better understand the technical scheme in the utility model, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the utility model.

[0021] Please refer to Figure 1 、 Figure 2 、 Figure 3 and in combination with Figure 4 , a waterproof structure of a fan for a floor cleaning machine is shown, which comprises a motor body (publicly known structure, not shown in the figure) sealingly installed inside a motor housing 1, a motor shaft 2 of the motor body is rotatably installed in a bearing chamber 1a of the motor housing 1 through a bearing 3, and extends to the upper end of the bearing chamber 1a and is fixedly connected with a moving impeller 4. Wherein, an oil seal 5 is sleeved on the outer periphery of the motor shaft 2 outside the bearing chamber 1a, and a fan housing 6 and an oil seal cover (not shown in the figure) fixedly embedded on the fan housing 6 are sleeved on the outer periphery of the oil seal 5, the oil seal cover seals and fixes the oil seal 5, and the fan housing 1 and the motor housing 6 are tightly connected by screw fasteners. Preferably, in this embodiment, the oil seal cover is an injection molding part, and is in clearance fit with the moving impeller 4; preferably, in this embodiment, the oil seal 5 is a rubber part (in other embodiments, the oil seal can also be a silica gel part).

[0022] Preferably, in order to further facilitate the sealing installation effect, in this embodiment, the oil seal cover is provided with a folded edge structure, which is in compression contact with the oil seal 5; further preferably, in this embodiment, the fan housing 6 comprises a cover installation circular table 6a located at the inner periphery and a wind guide housing part 6b located at the outer periphery, the cover installation circular table 6a is fixedly embedded with the oil seal cover; further preferably, in order to facilitate the sealing installation effect, in this embodiment, the cover installation circular table 6a comprises a groove 61 located at the inner periphery and a plurality of embedded grooves 62 located at the outer periphery and spaced apart, the outer periphery of the oil seal cover is embedded in each embedded groove 62, and the inner periphery thereof is embedded with the groove 61; wherein, the folded edge structure is located at the inner periphery of the oil seal cover.

[0023] Preferably, in order to further facilitate long-term sealing waterproof reliability, in the embodiment, the oil seal 5 and the outer end of the bearing chamber 1a are filled with sealing grease 7, so that the lip 5a of the oil seal 5 and the sealing grease 7 are in sealing contact with the motor shaft 2, further increasing the waterproof performance of the bearing 3. During normal operation of the motor, the melted sealing grease 7 can increase the lubricity of the oil seal lip 5a and the motor shaft 2, thereby increasing the service life of the oil seal 5. Even if the oil seal lip 5a fails slightly, the sealing grease 7 in the cavity still has certain waterproof performance, thereby further significantly improving the waterproof performance of the fan.

[0024] The embodiment is sleeved with the oil seal 5 on the outer periphery of the motor shaft 2 located at the outer end of the bearing chamber 1a, and then the oil seal 5 is sealed and fixed by the oil seal cover embedded on the fan housing 6. Finally, the sealing and fixed installation is realized by the fastening and installation connection of the fan housing 6 and the motor housing 1, thereby obtaining the waterproof structure of the fan for the scrubber, avoiding the problem that external water vapor enters the bearing 3 through the air inlet 4a of the impeller 4, thereby causing the performance failure of the motor.

[0025] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment includes only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A waterproof structure of an air blower for a scrubber, characterized by, The motor body is sealingly installed in the motor housing, the upper end of the motor shaft of the motor body is rotatably installed in the bearing chamber of the motor housing through a bearing, and extends to the fixedly installed connection with the impeller after penetrating the bearing chamber.

2. The waterproof structure of the fan for the scrubber according to claim 1, wherein The oil seal is provided with a flange structure, and the flange structure is in compression contact with the oil seal.

3. The waterproof structure of the fan for the scrubber according to claim 2, wherein The fan housing includes a grommet installation circular table at the inner periphery and a wind guide housing part at the outer periphery, and the grommet installation circular table is fixedly embedded with the oil seal cover.

4. The waterproof structure of the fan for the scrubber according to claim 3, wherein The grommet installation circular table includes a groove at the inner periphery and a plurality of embedded grooves at the outer periphery and spaced apart, the outer periphery of the oil seal cover is embedded in each embedded groove, and the inner periphery is embedded with the groove; wherein the flange structure is located at the inner periphery of the oil seal cover.

5. The waterproof structure of the fan for the scrubber according to claim 1, wherein The oil seal cover and the impeller are in clearance fit.

6. The waterproof structure of the fan for the scrubber according to claim 1, wherein The outer end between the oil seal and the bearing chamber is filled with sealing grease, so that the lip of the oil seal and the sealing grease are in sealing contact with the motor shaft.

7. The waterproof structure of the fan for the scrubber according to claim 1, wherein The oil seal is made of rubber or silicone.

8. The waterproof structure of the fan for the scrubber according to claim 2, wherein The oil seal cover is made of injection molding.

Images