VIBCO Vibration Products

SAND & GRAVEL
Bins, Hoppers & Chutes
A variety of vibrators are used for these bins and chutes. Electric, pneumatic and hydraulic. The selection depends on your particular circumstances. We will try to help you make the best selection.

First you must find out how much force is needed on the vibrator to move the material. Too small a vibrator will not do the job no matter if it is electric, pneumatic or hydraulic. Too big a vibrator can damage your bin. To find the correct force needed calculate the weight of the material in the transition or sloping part of the bin only.

FOR CONICAL BINS CALCULATE AS FOLLOWS:
261 x DIA2 x HEIGHT x MATERIAL DENSITY IN LBS/CU. FT.

FOR RECTANGULAR BINS:
LENGHTH x WIDTH x HEIGHT x 1Ǚ x MATERIAL DENSITY

When the below weight is calculated divide by 10. The figure you get is the force or impact needed on the vibrator. From the table draw a line across from the force calculated. You will then find you have a choice of several vibrators, both electric, pneumatic or hydraulic models.

Click HERE to see a larger version of this table.

    SOME ADDITIONAL CONSIDERATIONS:
    When sizing a vibrator to a bin:
  1. If bin side angle is below 30 degrees select next larger vibrator
  2. If bin thickness is extra heavy or an excessive amount of stiffeners are present select next larger vibrator
  3. On real sticky and hard to move materials it is better to use 2 smaller vibrators instead of one large one. Each one of the smaller vibrators will produce half of the force of one large one.
  4. When using 2 vibrators it has been proven the best results have been obtained by using vibrators with different frequencies for example: In electric models use onme of 3600 RPM vibrator and one 1800 RPM vibrator. The obtained "vibration" has proven to move the most stubborn materials.
IN GENERAL:
ROTARY ELECTRIC VIBRATORS are initially higher in cost than pneumatic vibrators, however, the opertaion cost is considerably less and the difference in price and installation cost is recaptured in a few months of operation
OTHER CONSIDERATIONS: The electric units have the lowest noise readings 65-70 dB - no more sound than an electric motor. The life expectancy of an electric vibrator is 2-3 times that of a pneumatic one. (See page 3-6 in General Catalog.)

 2P-450
TURBINE: BALL & PISTON VIBRATORS: The life of pneumatic units is depending on the cleanness of the compressed air and the operating pressure. Maximum operating pressure is 80 PSI, above 80 PSI, the life of the pneumatic vibrator diminishes rapidly. The dBa reading on piston vibrators is 80-115, on the ball vibrators, 80-110. THe ONLY pneumatic unit with a dBa reading of 60-80 is the TURBINE VIBRATOR. The least air consuming are the piston vibrators, then the turbine, ball and SVR high frequency vibrators.
TURBINES: (See page 13-18 in General Catalog)
  • Lowest Noise Level of All the Pneumatic Models 60-80dB
  • Need No Lubrication - Bearings are Prelubricated for Life
  • CAn be Repaired in the Field (Repair Kits Available)
  • Moderate Air Consumption
  • Wide Selection Available from Force or Impacts from 100 to 5000 lbs.

    • VS-510

    CCF-2000
    BALL VIBRATORS: (See page 19-20 in General Catalog)
  • Need Lubrication
  • Larger models consume excessive amounts of air
  • Simple in design
  • Lower in cost than turbines but higher than pistons
  • Noise level after start-out low 70-75 dB but increases over the life of the unit to 90-110 dB

    • V-380
    PISTON VIBRATORS: (See page 21-22 in General Catalog)
  • Must have lubrication
  • Need air cleaner to assure clean air
  • Noisy 80-115 dB
  • Lowest in cost of any pneumatic vibrators
  • Cannot be repaired in the field
  • Once piston or housing is worn the repair cost is close to the cost of a new unit.

    • 55-3"
    PROBLEM:Crushed stone would hang up over clam shell gate

    SOLUTION:Model 2P-800 Electric Vibrator was installed - no more hang ups.

    ENGINEERING DATA
    & APPLICATIONS    		 > SAND & GRAVEL
      
    		 3 DIFFERNT WAYS TO MOUNT VIBRATOR ON SAND BIN WITH HORIZONTAL STIFFENER
    Above Left: Stiffener not strong enough to withstand vibration. A 6" channel was added above a stiffener.
    Above Right: Stiffener were cut and a long 4" channel was welded on vertically.
    Left: Two 4" channel irons were butted up on each side of the stiffener. Vibrator mounting plate was welded to the top of channel irons and stiffener.
    ADDITIONAL APPLICATIONS
    Right: Model 2P-800 on sand bin in cement block plant.
    Below Left: SVR 4000 high impact high frequency pneumatic vibrator used on silt bin.
    Below Right: CCF-2000 Silent Pneumatic Turbine Vibrator used on gravel hopper.
      

    ENGINEERING DATA
    & APPLICATIONS    		 > SAND & GRAVEL
    MODEL 2P-450
    Two heavy duty electric vibrators keep material flowing at crusher plant.
        Model VS-320
    Silent pneumatic turbine vibrator on silica sand bin
    MODEL 2P-8000
    One Model 2P-800 electric heavy duty vibrator unloads two bins onto conveyor belt.

    ENGINEERING DATA
    & APPLICATIONS    		 > SAND & GRAVEL
    INSTALLATIONS
    HEAVY DUTY MODEL 2P-800
    ELECTRIC VIBRATOR CLEANS SAND BIN

    PROBLEM:Wet sand would not flow in bin

    SOLUTION:Model 2P-800 Electric 3 phase vibrator mounted as per below

    solved the problem.

    A. PLACING VIBRATOR
    The vibrator should be placed 1/3 up the sloping part of the bin if material is coarse. For fine grain material, 1/4 up.

    B. MOUNTING VIBRATOR
    Vibrator is never mounted directly to the skin of the bin. Use a plate or preferably a 4" channel which will stiffin up the structure to be vibrated as well as spread the vibration over a large surface.

    1. The channel iron length is determined by the bin thickness, for 3/16 - 3/8 plate, use 3-5' channel; under 3/16 use 6-7' channel; over 3/8 use 1-2' channel. The channel is welded with legs towards bin if bin skin is over 3/16 or bin is concial. If under 3/16, weld with back towards bin.
    		 
    2. The mounting plate is made of 1/2 - 5/8" plate, make it a wide and as long as the vibrator.

    3.Welding
    (a) Weld mounting plate in middle of channel iron.
    (b) Weld channel iron to bin positioning mounting plate 1/3 or 1/4 up the sloping part of bin. USe intermittent welds 3-6' long. DO NOT WELD THE ENDS. STOP WELDS 1" from ends.
    For installation of vibrator, see service instructions.


    ENGINEERING DATA
    & APPLICATIONS    		 > CHUTES