Wood Shop Dust Collection

Our shop needs *real* dust collection. Here lies the start of plans to rectify that.

Dust Collector

http://www.clearvuecyclones.com/cv-max/13-cv-max-three-phase-with-filters.html

Collector dimensions are approximately 24" x 52" x 96" tall.

5 HP motor (Leeson 132242.00 frame 184TC, 86.5% efficiency)

This dust collector will have sufficient flow with two open gates. Occasional use with three gates open is acceptable. The 'nano' filter option ($100) is recommended. Collector cost with nano filter is $2070.

A whole room dust filter may also be in order.

Clearvue technical support does not recommend mixing wood and metal dust in the same collection system.

Ducting

6" PVC sewer & drain pipe for drops

http://www.lowes.com/pd_5752-1814-S/M+06006++0600_4294765358__?productId=3134721&Ns=p_product_qty_sales_dollar%7C1&pl=1&currentURL=%3FNs%3Dp_product_qty_sales_dollar%7C1&facetInfo=

8" PVC sewer & drain pipe for main lines

Automating this stuff

Initially, the dust collector will be turned on and off manually and the blast gates will be opened manually. After all the wood working machines are connected to the dust collector, we will work to automate the gates and collector motor - turning on a tool will activate the collector.

I've read that using less than 3" ducts with a large 15-16" blower is a problem.

I drew up some plans based on these resources:

• http://www.youtube.com/watch?v=7zlNimxZgqw
• File:Blast gate.doc

This is a 2.5" duct, 'cause I originally planned to use the shop vac. The hole can just be enlarged to 3" w/o other changes. For 4" or 6" gates, the plates should be enlarged, and linkages will probably need lengthening. I made a lot of paper models to get the geometry right. Someone with experience modelling moving parts with CAD could probably do the scaling more quickly.

Machines that need collection

• Table saw (needs retrofit 6" pipe inside and out, maybe 5" and an overhead 3" collector)
• Jointer
• Mitre saw (needs a shroud built)
• Bandsaw (needs front plate of drive wheel replaced with something allowing for collection)
• Belt/disk sander (probably needs a shroud for the belt, or just a better sander)
• Planer (could probably use side shrouds)
• Stationary and pedestal grinders (hot metals)
• Grinder (cold metals)
• CNC mini mill.
• Wood lathe (needs a shroud)
• Drill presses

While all of these machines need dust/debris collection of some sort. Some of them may be better served by water buckets instead of a central dust vacuum. For instance grinders should have their exhausts feed into a bucket with water in it.

Electrical Needs

The dust collector should be on it's own circuit, switched on by a relay. Switches should be conveniently located near machines, or interlocked to certain machines.

Costs

Clearvue CVMAX 3 phase with nano filters $2070

Filter clean out box $80

6" blast gates $15 each http://www.clearvuecyclones.com/supporting-products/38-blast-gate-6.html

round fiber drum $50

x pieces of 6"x10' pvc pipe

y pieces of 8"x10' pvc pipe

n 8x8x6 PVC wye $83 each

mounting hardware $200

Dylos DC1100 air quality monitor $200

Operating cost estimate:

3.24kw X .12$/kwh = $.39/hour

(filters last indefinitely with regular maintenance)