JP2579757Y2 - Rotary motor brush powder removal equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current collector for a rotary electric machine, and more particularly to a brush powder removing device for a rotary electric machine for removing brush powder generated by friction between a brush and a slipper ring.

[0002]

2. Description of the Related Art FIG. 2 shows a current collecting portion of a rotary electric machine having a conventional brush powder removing function. In the figure, 1 is a rotating shaft, 2
Reference numeral denotes a slip ring fitted to the rotating shaft, reference numeral 3 denotes a brush, reference numeral 4 denotes an internal fan for absorbing the brush powder and discharging the brush powder to a filter 5 for removing the brush powder. The filter 5 has a strip shape as shown in FIG. 3, and is attached to the brush powder discharge path so as to be able to be pulled out from the outside.

Next, the operation will be described according to the above configuration. Brush powder generated by friction between the slip ring 2 and the brush 3 fitted to the rotating shaft 1 is discharged to the filter 5 by the suction force of the internal fan 4 rotating with the rotation of the rotating shaft 1 and removed by the filter 5. You.

Further, when a rotary electric machine is used for a long time and the filter 5 is clogged by brush powder and no longer functions as a filter, the filter 5 is pulled out when the rotary electric machine is stopped, replaced, or washed. Reinstall.

[0005]

Since the conventional brush powder removal filter is mounted as described above, especially in the case of a rotating electric machine using a sealed type internal pressure explosion-proof structure slip ring, the filter must be replaced by the rotating electric machine. Stopped and went. Further, when the rotating electric machine needs to be continuously operated, there is a problem that the filter cannot be replaced.

This invention has been made in order to solve the above-mentioned problems, and in particular, it is necessary to renew a filter surface for removing brush powder in a slip ring chamber having an internal pressure explosion proof structure without stopping the rotating electric machine. An object of the present invention is to obtain a brush powder removing device for a rotating electric machine that can be used.

[0007]

SUMMARY OF THE INVENTION A brush powder removing device for a rotating electric machine according to the present invention includes a fan for discharging air from a current collector to the outside into a current collecting chamber of a rotating electric machine having a sealed internal pressure explosion-proof structure ; A discharge path portion for introducing the collected air and returning it to the current collecting portion, a filter storage portion for storing a band-shaped brush powder removing filter on the air discharge side, and the filter storage portion by operating an external handle. a filter winding portion for winding the used brush dust removal filter with pulling out the brush dust removing filter to block the discharge path section from the section
The brush powder incorporated in the air and introduced into the discharge path and mixed into the air returning to the current collector is removed by the brush powder removing filter.

[0008]

[Action] brush dust removing apparatus of a rotary electric machine in this invention is a discharge path portion for returning the exhaust air from the by Ri collector unit to fan collector portions, strip-shaped housed in the filter housing portion so as to block Pull the filter external operation, the brush powder mixed in the air flowing through the discharge path portion blotted on filter, the filter being drawn after a predetermined time, outside of
By pulling out a new filter from the filter accommodating portion while being wound by the powder filter winding portion by operating the handle , brush powder can be introduced into the discharge path without being scattered and removed by the filter.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a brush powder removing device for a rotating electric machine according to the present embodiment. In the drawing, 5 is a take-up filter, 6 is a storage box for storing a roll-type take-up filter 5, 7 is a storage box for taking up and storing a used filter, and 8 is a rotation type of the take-up filter 5. A winding handle.
The configuration of the current collecting portion is the same as that of the conventional device shown in FIG.

Next, the operation of this embodiment according to the above configuration will be described. When the handle 8 is turned in the direction of the arrow,
The take-up filter 5 wound in a roll shape in the storage box 6 is drawn out so as to block the discharge path of the brush powder. brush
As shown by a broken line arrow in FIG.
Air exhausted by fan 4 from inside the current collector
Shows the path of returning to the inside of the current collector and convection. With the filter 5 pulled out in this manner, the brush powder discharged from the current collector by the suction force of the internal fan 4 is removed by the filter 5.

After the brush powder is removed by the drawn-out filter 5 for a certain period of time, if it is assumed that the function of the filter 5 has deteriorated due to clogging of the filter, the handle 8 is rotated in the direction of the arrow to become old. The filter is wound up in the storage box 7. At this time, a new filter 5 is simultaneously pulled out of the storage box 6, and the filter surface of the brush powder discharge path is replaced with a new filter surface.

In the brush powder removing device configured as described above, the filter surface on which the brush powder is attached can be changed to a new filter surface by turning the handle 8 provided outside and winding up the filter. Therefore, it is possible to replace the filter without stopping the rotating electric machine even in the sealed pressure explosion-proof structure.

In the case of internal pressure explosion protection, it is not permissible to open the filter during operation and replace the filter, so it is significant that the filter can always be replaced with a new surface without stopping the rotating electric machine.

However, even if the present structure is used for a rotating electric machine other than the internal pressure explosion-proof, the filter can always be provided on a new surface.

As described above, according to the present invention, the enclosed type
The collector chamber of the rotary electric machine 圧防explosion structure, a fan for discharging air to the outside from the collector unit, and introducing the discharged ventilation path unit back to the current collector, the discharge side of the air strip a filter housing part accommodating the brush dust removing filter of the outer
The handle of the unit is used to pull out the brush powder removing filter from the filter storage unit so as to cut off the discharge path unit, and incorporate a filter winding unit that winds up the used brush powder removing filter. The brush powder mixed into the air that is introduced into the path and returns to the current collector is removed by the filter for removing the brush powder, so that the brush powder is discharged to the outside without being scattered and efficiently removed by the filter. In addition, the filter can be renewed inside the current collection room without stopping the rotating electric machine, so that the interval of stopping the rotating electric machine for final filter replacement can be extended, the equipment operation rate is improved, and the internal pressure is sufficiently increased. there is an effect that that be kept to.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a brush powder removing device for a rotating electric machine according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a conventional brush powder removing device for a rotating electric machine.

FIG. 3 is a diagram illustrating a part III- in the removal filter part illustrated in FIG. 2;
FIG. 3 is a sectional view taken along line III.

[Explanation of symbols]

 3 Brush 4 Internal fan 5 Filter 6 Filter storage box 7 Used filter storage box 8 Handle

Claims (1)

(57) [Scope of request for utility model registration] 1. A current collecting chamber of a rotary electric machine having a sealed internal pressure explosion-proof structure.
Inside, a fan for discharging air from the current collecting unit to the outside, a discharge path unit for introducing the discharged air and returning to the current collecting unit,
On the air discharge side, a filter accommodating section accommodating a band-shaped brush powder removing filter, and by using an external handle , pull out the brush powder removing filter from the filter accommodating section so as to cut off the discharge path section and use the filter. Built-in filter take-up section that takes up brush filter removal filter
And, brush dust removing device of a rotating electric machine and removing the brush powder introduced mixed in the air back to the current collector to the discharge path by the brush dust removal filter.