Shivvers Dryer Details

TAPERED SWEEP AUGER removes thin, even layers of dry grain as it travels around the bin It’s patented taper is the secret of the Circu-Lator’s uncanny moisture control, allowing it to remove only the dry grain which lays just above the drying floor. The Auger itself is constructed of a 1¼ inch diameter solid alloy steel shaft, with ¼inch thick flighting.

DELUXE CIRCU-TROL provides dependable “around the clock” operation for the basic two-bin continuous flow system. It has magnetic starters for the Circu-Lator, Continuous Flow Auger and Grain Spreader in the cooling bin. A time delay empties the Continuous Flow Auger at the end of each cycle, for easy starts. Additional magnetic starter panels may be added to the Circu-Trol to control up to four separate Continuous Flow Augers.

DUAL THERMOSTATS control the drying process. The Plenum Thermostat has a sensing element located in the air-stream below the drying floor. It cycles the dryer burner to maintain a constant, even plenum temperature regardless of weather changes.

The sensing element of the Grain Thermostat is located 8” above the drying floor where it senses the temperature of the grain in the drying zone. It automatically starts the Circu-Lator when the grain reaches a preselected temperature and moisture content, stopping it when the dry grain has been removed (see below).


The Grain Thermostat automatically starts the Tapered Sweep Auger when the grain in the drying zone reaches a preselected temperature and moisture content.	The Tapered Sweep Auger rotates once around the bin, removing an even layer of dry grain.	The Tapered Sweep is automatically shut off by the cool wet grain brought down as it passes under the Grain Sensing Probe. It will pause, then start again when the new layer of grain becomes dry.

The Circu-Lator is driven by one high torque motor located outside the bin. Power is transmitted to the bin center by a unique “shaft within a shaft” arrangement. A 1” diameter solid steel drive shaft rotates inside the 1 3/8” diameter tube which is the power shaft of the unloading auger. (The Circu-Lator is driven without turning the unloading auger.)

The 1” drive shaft powers the gearboxes, which in turn drive the Tapered Sweep Auger and Center Vertical Auger. The unloading auger is independent of the recirculating mechanism, and may be operated with or without the Circu Lator.

The drying bin can be unloaded independently of the Circu-Lator through the built-in unloading system. This unloader is available in 6” or 8” diameter with either horizontal or vertical discharge. Both have a slide gate to control unloading speed, which is approximately 800 BPH for the 6”, and 1200 BPH for the 8”.

A horizontal discharge unit may be converted to vertical discharge at a later date, with the addition of an “add-on” vertical unloader.

The Center Vertical Auger rotates gently, elevating the grain up the bin center A ½” cushion space between the heavy flighting and tube prevents any possible grain damage.

When the Continuous Flow Auger is in operation, the grain is pulled away to storage. If it is not in operation, the grain is elevated to the Re-circulation Spreader (see inset photo) and respread evenly on top.

The blue Continuous Flow Boot may be installed with the Circu-Lator or at a later date. It’s pivoted connection allows the Continuous Flow Auger to be installed at any angle from 40 to 90 degrees.

Rugged gearboxes are built for long years of durable service They are packed with moly grease, have oversize 1¼” stress proof shafts, hardened steel gears and Timken thrust bearings. They are protected by three seals on every shaft opening and zerks are provided for directly lubricating each bearing.

The weight of the Centre Vertical Auger is borne by a rugged cast iron spider wheel which transmits the load to thrust bearings.

The Continuous Flow Auger is constructed of heavy duty flighting with a 1¼” shaft and 16 gauge galvanized tube. It is powered by a 1 to 5 HP motor depending upon the auger length.

The Conical Roof Boot shown in lower right corner provides a watertight mounting between the Continuous Flow Auger and drying bin roof .

The notched cast iron wheel of the tapered sweep auger travels on a 10 gauge wear track as it rotates around the bin. The tapered sweep auger remains on the floor at all times.

The Cast Iron Wheel is inset several feet from the wall on bin diameters above 27 feet. This prevents the Tapered Sweep from touching the floor, and insures a faster, more uniform speed of rotation.

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