JP2007237081A - Housing for brush-rotating driving shaft - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a housing for a brush-rotating driving shaft which has air buffer to be used for a brush-rotating driving shaft in a washing apparatus having a washing brush. <P>SOLUTION: The housing for a brush-rotating driving shaft of a cleaning brush comprises an air purge part 1 having air buffer, an air pipe 2, and an air supply part 3. The air supply part 3 supplies compressed air to the air purge part 1 through the air pipe 2 and the air purge part 1 releases the compressed air from the air buffer along the brush-rotating driving shaft 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a housing used for a brush rotation drive shaft of a cleaning apparatus having a cleaning brush, and more particularly to a brush rotation drive shaft housing having an air buffer.

  FIG. 3 is a configuration diagram showing a configuration of a conventional cleaning apparatus having a cleaning brush. In FIG. 3, the rotating brush 4 of the cleaning device 100 is connected to a brush rotation drive shaft 5. The brush rotation drive shaft 5 is attached to a bearing housing 6 having a bearing 7. The bearing housing 6 is fixed by being attached to a fixed arm 11 outside the tank. The brush rotation drive shaft 5 is connected to the motor 12 to obtain drive torque. Further, the bearing housing 6 is sealed by separating the inside of the tank from the outside of the tank by the housing 10 of the cleaning device.

  A liquid cutting plate 8 is attached to a portion of the brush rotation drive shaft 5 between the bearing housing 6 and the rotary brush 4. Further, the panel 9 is inserted so as to be sandwiched between the two liquid cutting plates 8. The cleaning apparatus 100 is configured to provide two rotating brushes 4 at the top and bottom and sandwich and clean the object to be cleaned. However, the cleaning apparatus 100 may be configured with one rotating brush 4. FIG. 4 is an enlarged view of a bearing housing portion.

  When the rotating brush 4 is rotated by obtaining a rotational driving force from the motor 12 and the cleaning liquid is jetted, when the cleaning object is fed to the rotating brush 4 by the transport mechanism, cleaning of the cleaning object starts. Since the rotating brush 4 is rotating at a rotation speed of about 500 rpm, the cleaning liquid becomes droplets from the rotating brush 4 by the centrifugal force and is blown around. Further, a part of the cleaning liquid sprayed toward the cleaning object is in a mist state. These droplets and mist of the cleaning liquid scatter in the housing 10 of the cleaning apparatus 100 and adhere to the surface of the member of the apparatus. In order to prevent the intrusion of dust, the inside of the housing 10 has a positive pressure with respect to the outside of the tank, and a part thereof enters the housing through the bearing 7 of the bearing housing 6 and further to the outside of the tank. It was leaking out.

  In order to avoid the scattered droplets and mist from directly adhering to the bearing housing 6, a liquid cutting plate 8 and a panel 9 are provided. FIG. 5 is an enlarged view of a portion where the liquid cutting plate and the panel are attached. The scattered liquid droplets and mist adhere to the panel 9 as indicated by the arrows and flow downward along the panel surface, so that they are prevented from directly adhering to the bearing housing 6.

  However, depending on the cleaning conditions, if a large amount of cleaning liquid is used or if the rotation speed is higher, a large amount of droplets and mist may be generated. FIG. 6 is an entry path diagram for the cleaning liquid to enter the bearing housing. Droplets and mist generated in large quantities are captured by the panel 9, and a part of the cleaning liquid flows down to the liquid cutting plate 8. If the amount of the cleaning liquid is large, the liquid droplets are scattered again due to the transfer rate of the liquid cutting plate 8.

The droplets adhere to the back side of the panel 9, the portion of the brush rotation drive shaft 5 between the liquid cutting plate 8 and the bearing housing 6, and the surface of the bearing housing 6. Part of the adhering cleaning liquid passes through the bearing 7 of the bearing housing 6 and enters the housing along the direction of the arrow, and leaks out of the tank. For this reason, bearings with high corrosion resistance are required, and countermeasures against liquid leakage outside the tank, such as addition of a drain, are necessary. Patent Document 1 describes a contamination prevention plate for preventing a heating lamp of a semiconductor wafer cleaning apparatus from being contaminated by a cleaning liquid.
JP 2002-231694 A

  The present invention has been made to solve such problems, and an object thereof is to provide a brush rotation drive shaft housing having an air buffer used for a brush rotation drive shaft of a cleaning device having a cleaning brush. There is to do.

The brush rotation drive shaft housing of the present invention is a brush rotation drive shaft housing for a cleaning brush incorporated in a cleaning device,
The housing comprises an air purge part having an air buffer, an air pipe, and an air supply part,
The air supply unit supplies compressed air to the air purge unit via the air pipe,
The air purge unit discharges the compressed air from the air buffer along the brush rotation drive shaft.

  The brush rotation drive shaft housing according to the present invention is characterized in that the air purge portion is attached close to the bearing housing.

  The brush rotation drive shaft housing of the present invention is characterized in that the air purge portion is attached to the bearing housing by fitting.

  According to the brush rotation drive shaft housing of the present invention, a part of the adhering cleaning liquid does not enter the housing through the bearing of the bearing housing and leak out of the tank. For this reason, a bearing with high corrosion resistance is not required, the life of the bearing is extended, and the replacement frequency is reduced. In addition, since it is not necessary to take measures against liquid leakage outside the tank, such as addition of a drain, maintenance is facilitated. Furthermore, it becomes possible to prevent the inside of a tank from being contaminated by dust generation at the bearing of the bearing.

  Embodiments according to the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing the configuration of the brush rotation drive shaft housing of the present invention. In FIG. 1, an air purge unit 1, an air pipe 2, and an air supply unit 3 are newly added to FIG. In FIG. 1, the air purge unit 1 is attached to a bearing housing 6 by fitting. Both ends of the air pipe 2 are connected to the air purge unit 1 and the air supply unit 3, and guide the compressed air supplied from the air supply unit 3 to the air purge unit 1.

  As in the case of FIG. 4, when the rotating brush 4 is rotated by obtaining a rotational driving force from the motor 12 and the cleaning liquid is sprayed, the object to be cleaned is sent to the rotating brush 4 by the transport mechanism. The washing of things begins. If this cleaning is the situation in FIG. 6, a large amount of droplets and mist are captured by the panel 9, and a part of the cleaning liquid flows down to the liquid cutting plate 8, and the liquid is again liquid by the transfer rate of the liquid cutting plate 8. Drops splash. The droplets adhere mainly to the back side of the panel 9, the portion of the brush rotation drive shaft 5 between the liquid cutting plate 8 and the air purge unit 1, and the surface of the air purge unit 1.

  FIG. 2 is an enlarged view of the air purge portion and its proximity portion. Some of the liquid droplets accumulated on the brush rotation drive shaft 5 tends to flow toward the air purge unit 1. On the other hand, the air buffer of the air purge unit 1 is filled with the compressed air sent from the air supply unit 3 via the air pipe 2, and the compressed air filling the air buffer is divided into the air supply unit 3 and the brush rotation drive shaft. 5 is ejected from the gap between the two sides along the axis of the brush rotation drive shaft 5.

  The compressed air ejected in the direction of the liquid cutting plate 8 blocks droplets that try to flow in the direction of the air purge unit 1. Therefore, the trouble which flows out of the tank through the bearing 7 can be solved. Further, the compressed air jetted in the direction of the bearing 7 of the bearing housing 6 pushes out the dust generated by the rotation of the bearing 7 to the outside of the tank, thereby preventing contamination in the tank.

  As described above, the brush rotation drive shaft housing according to the present invention prevents a part of the adhering cleaning liquid from entering the housing through the bearing of the bearing housing and leaking out of the tank. For this reason, a bearing with high corrosion resistance is not required, the life of the bearing is extended, and the replacement frequency is reduced. In addition, since it is not necessary to take measures against liquid leakage outside the tank, such as addition of a drain, maintenance is facilitated. Furthermore, it becomes possible to prevent the inside of a tank from being contaminated by dust generation at the bearing of the bearing.

The block diagram which shows the structure of the housing for brush rotation drive shafts in this invention. The enlarged view which expanded the air purge part and its proximity | contact part. The block diagram which shows the structure of the washing | cleaning apparatus which has the conventional washing brush. The enlarged view of the housing part for bearings. The enlarged view of the part to which the liquid cutting board and the panel are attached. FIG. 6 is an intrusion path diagram for the cleaning liquid to enter the bearing housing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air purge part 2 Air pipe 3 Air supply part 4 Rotating brush 5 Rotating brush drive shaft 6 Housing for bearing 7 Bearing 8 Liquid cutting plate 9 Panel 10 Cleaning device case 11 Fixed arm 12 Motor 100 Cleaning device

Claims (3)

A housing for a brush rotation drive shaft of a cleaning brush incorporated into a cleaning device,
The housing comprises an air purge part having an air buffer, an air pipe, and an air supply part,
The air supply unit supplies compressed air to the air purge unit via the air pipe,
The brush rotation drive shaft housing, wherein the air purge unit discharges the compressed air from the air buffer along the brush rotation drive shaft.   2. The brush rotation drive shaft housing according to claim 1, wherein the air purge portion is attached in proximity to the bearing housing.   The brush rotation drive shaft housing according to claim 2, wherein the air purge portion is attached to the bearing housing by fitting.

Images