Remodeling HEPA filter of dust collector |
Apr. 1/2022 The canister filter of the dust collector DC-90R2 has a built-in rotating fin that drops dust, but it no longer rotates. It seems that the bevel gear is worn out and slips, so I remodeled it to a direct connection method that does not use gears. |
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1.When the handle at the bottom of the filter is turned, the fins inside rotate and hit the pleats of the filter to remove dust. |
2.Removed the filter and looked from the back side. |
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3.When the center cover is removed, the bevel gear is included. Dust was clogged in this and the gear was worn. |
4.A rubber plate is attached to the tip of the spring steel on the center shaft, which hits the pleats of filter to remove dust. |
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5.This time, we will remodel the center shaft into a structure that rotates directly from the upper side, so unnecessary shafts and bevel gears have been removed. |
6.The top of the filter. M6 screws hang the center axle. If you turn the center shaft, the screw will also turn, so you can fix the handle here. |
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7.Removed handle and horizontal axis. |
8.Cut the part where the handle of the horizontal axis was contained by about 30 mm. |
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9.Drilling 5mm pilot hole for M6. |
10.Finish the end face. |
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11.M6 tap. |
12.Screw in the M6 bolt. |
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13.Cut leaving about 10 mm of screw part. |
14.Remove the M6 screw on the top and screw in this shaft instead. |
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15.It becomes like this when the handle is inserted. |
16.Next, make a cap that closes the horizontal shaft hole of the bevel gear. Turning while matching with the support plate of the shaft. |
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17.Insert the cap from the back of the support. |
18.Attach the support plate to the filter. |
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Remodeling is completed so that it can be turned from above. Since there is not much space at the top, I had to pull out the dust collector body when turning it, but this is unexpectedly troublesome.So,I decided to modify it so that it could be turned with a ratchet instead of the handle. |
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21.There was a 3/8 "long nut and bolt in the junk box, so I decided to use it. |
22.Screw in the bolt firmly. |
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23.Drilling 5mm pilot hole for M6. |
24.M6 tap. |
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25.After screwing in the M6 long screw, I decided to drive in the spring pin so that the ratchet would not fall down. First,Drilling 4mm. |
26.Drive in the pin. |
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27.Screw the created shaft on the top of the filter. |
28.This is a rapid ratchet wrench sold by Fujikin Co., Ltd., which is an excellent one with 90 teeth feed angle of 4 degrees and fine and smooth movement. |
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This makes it possible to remove dust without moving the dust collector. |
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