PNEUMATIC ELECTIRC

VS-510 & CCF MODEL 2P-450 MODEL US 1600

Cement reacts well to vibrator frequency of 3600 vibrations per minute or higher. The high frequency vibration helps to aerate the cement and make it flow freely. Rotary vibrators churn the cement and are better to use than a piston and electro-magnetic vibrations that have a tendency to pack the cement.

To select the proper size vibrator, calculate the total weight of the material in the sloping part of the silo. For rectangular bins: (dimensions in feet): Length x Width x Height x 1/3 x Material Density in Lbs./Cu.Ft. For concial bins: .261 Dia2 x Height x Material Density in Lbs./Cu.Ft. Cubic weight of cement is 100/lbs. cu. ft. dimensions in feet. By dividing the total weight from the formula by 10 you will get the vibration force needed on the vibrator If the cement silo has a lot of stiffeners or is made of extra heavy steel walls, use one size larger vibrator. For selecting pneumatic vibrations model VS page 14 & CC page 18 in general catalog, for electric vibrators Model US see page 12 and for 2P models see page 4 in general catalog. Picture shows Model 2P-800 Electric VIbrator on thin walled 10' Dia. Cement Silo. A 7' long 4" channel iron is used to stiffen up and distribute the vibration force over the complete bin side.

ENGINEERING DATA & APPLICATIONS > CEMENT SILOS

PROBLEM: Cement hung up above chute coming out of hopper SOLUTION: Model US-1600 Electric Vibrator 115 Volt was installed 1/4 up the slope of the hopper. The high frequency vibrator aerated the cement and made it flow easily thru the chute.

PROBLEM: Flow of cement was erratic from silo and created a constant problem. SOLUTION: Model US-450 115 volt electirc vibrator was installed on a 6" channel iron. A timer was also installed to start vibrator every 3 minutes to vibrate 20 seconds to keep flow going when cement was drawn from silo.

ENGINEERING DATA & APPLICATIONS > CEMENT SILOS

AIR CANNON Prevent Material Sticking to Bin Walls BRASOTA CONCRETE 3904 15th St. East Bradenton, FL 33506 OWNER: William Roberts PRODUCTS: Lindels and Specialty Blocks PROBLEM: Despite four aeration nozzles and a couple of old ball vibrators, the discharge of cement from the storage silo was very uneven sometimes non-existent. SOLUTION: One VIBCO Model ABS-2 Air Cannon was installed as shown in the photos, manually push-button operated from a control panel. With a few initial "blasts" a lot of "old cement" was cleaned out, and now cement flows on command every time. Air consumption has been cut to a fraction of what was used for nozzles and vibrators.