Search by Category:
All
Farm     Commercial
Brochures     Manuals

Tower Dryer
Literature Downloads:

Brochure Download

Manual Download

Maintenance and Service Material


Features:

  • Gravity inlet does not require leveling auger, reducing the number of moving parts

  • Self cleaning cushion box on plenum roof reduces grain damage and plenum roof wear

  • The 12.75" grain columns surrounding the heat plenum chamber allows the grain to receive all BTU's from the burner

  • Patented grain inverters are used to equalize column moisture content and temperature of the grain column, greatly improving quality and efficiency

  • In-line Maxon NP-LE-AL Series burners provide even heat and efficient combustion from either natural gas or LP vapor

  • Reducer cone equalizes air velocity past burners for optimum combustion and provides step-in access to burner assembly

  • Divider hopper separates the heating and cooling sections while preventing build-up of particulate matter

  • Internally mounted tubular centrifugal blowers deliver high volumetric airflow to the pressure heat and suction cool sections

  • Patented discharge system provides simple, uniform metering and quick dryer clean out

  • Industrial quality components (including Maxon valves and burners) ensure years of reliable service

  • Weather-proof NEMA IV cabinets and NEMA rated electrical components ensure safe and reliable operation in all conditions

  • PLC Control System provides one of the most advanced and reliable dryer controls on the market

  • Related Products
    and Accessories:

    Fans and Heaters

    40-Series Bin



    > Home > Commercial > Drying & Conditioning > Tower Dryers

    Tower Dryers

    Tower Dryers

    GSI has a reputation for engineering excellence. The tower dryer exemplifies this, with design innovations unmatched by anyone in the industry.

    The tower dryer design utilizes industry proven drying principles along with many unique features to provide the commercial user with a simple, reliable, fuel efficient grain dryer. Each dryer employs a bolt together (versus welded) design, which permits the wide use of galvanized steel (versus painted steel) throughout the dryer. In addition, all dryers have stainless steel, roll formed exterior sheeting as a standard feature. These design features simplify dryer erection, improve dryer appearance and promote a long dryer life.

    The hopper bottom design used on the dryer, including GSI’s patented metering drum, provides a simple and efficient grain discharge system. This system transfers grain from the dryer uniformly and allows for easy dryer clean-out. Touch screen controls offer computerized control of all dryer functions. This “smart” system eliminates the guesswork by providing the operator instant information on a large backlit color display and simplifies the operation of the dryer.


    Superior Workmanship
    Standard operational features on the dryer include double Maxon gas blocking valves on the gas train, exhaust air temperature sensors, plenum high temperature limits, grain level monitoring, continuous flame monitoring, airflow monitoring and motor overload monitoring. We take pride in the design and workmanship that goes into the tower dryer, and stand behind it with a one full year parts and labor warranty.


    Customer Service
    Should you ever need service on your GSI tower dryer, we have a professional staff of service technicians who can take care of your service needs. Also, many local GSI dealers have been trained in the service aspects of the tower dryer, and can provide quick, reliable service if needed.


    Wet Chamber

    Tower Dryer

    Efficient Design
    Grain enters the dryer at the top and falls into a self cleaning grain receiving chamber. The chamber creates a grain cushion, and with grain falling on grain, helps reduce plenum roof wear. This chamber also provides a means of distributing grain evenly around the dryer. The garner bin at the top of the dryer has a full 40 inches of wet grain storage. This area is completely sealed to help retain grain dust and particulates.

    Grain moves down, out of the garner area, and enters 12” wide grain drying columns in the heat section of the dryer. The tower dryer is designed to provide the optimum balance of grain retention time, airflow and temperature. Large column holding capacities result in long grain retention times in the drying section of the dryer. This long retention time, combined with low drying airflows and temperatures result in high quality, efficiently dried grain.

    Midway down the heat section of the dryer are GSI’s patented grain inverters. The inverters invert the grain from the inside of the grain column to the outside for more uniformly dried grain.

    GSI tower dryers are designed to retain bees wings and particulate matter within the drying columns. The largest standard hole size on the exterior screening of the dryer is 0.078 inch diameter perforation. After the grain is turned, the perforation size drops to a diameter of 0.0625 inches. Solid non-perforated exterior sheets are used at the grain inverters and at the top and bottom of the grain columns to help ensure that particulates are not expelled from the dryer.

    As grain exits the heat section of the dryer it enters the suction cooling section. Air used to cool the grain is recycled through the blower(s) resulting in significant energy savings.


    Blowers

    Blowers and Burners
    Depending on the size of the dryer, one, three, or four industrial duty blowers are used in the tower dryer. These internally mounted, in-line mixed flow blowers are sized to operate at slow speeds, which means low noise levels, low electrical usage and long blower and motor life.

    Airflow from the blowers is ducted across a Maxon NP-LE-AL line burner. The burner can operate on either natural gas or LP vapor. The burners are sized and profiled to provide even, efficient heat distribution to the drying section of the dryer. (fuel oil burners are optional)


    Discharge Drum

    Discharge Area
    Cool, dried grain passes from the cooling section of the dryer into the sealed, hoppered discharge section. Grain is gravity fed down a 45° hopper to GSI’s patented metering drum. This drum provides a positive, yet gentle means of metering grain uniformly from each column of the dryer and discharging it out the center of the dryer. The drum is driven by a variable speed inverter operated AC motor. The hopper bottom design of the dryer eliminates troublesome sweep augers and sweep arms and provides for quick dryer clean-out.


    Grain Inverters

    Patented Grain Inverters
    Patented Grain Inverters promote more even drying, higher test weights, and also help reduce operating costs.

    While the older grain exchangers move grain from the inside of the grain column to the outside of the column in 6” columns, the patented GSI Grain Inverters put a new twist on this process.

    GSI's Grain Inverters move all grain, except the outer two inches, within the column to eliminate over-dried grain and to maximize drying efficiency and grain quality. These patented Grain Inverters redirect the warmest grain from the inside of the column next to the wettest grain left at the outside of the column. The wet grain at the outer wall is dried by the captured heat which would have otherwise escaped the dryer. (See diagrams below for visual illustration) This process maintains optimal grain temperature, thus maximizing grain quality while using less fuel and significantly reducing operating costs.

    A convenient clean-out door also provides easy access for quick maintenance.

    Grain Inverters

    KERNEL TEMPERATURE
    Under 100° = Seed
    100° to 120° = Human Food Grade - Full Nutrition and Taste
    120° to 140° = Animal Food Grade - Full Nutrition
    140° to 160° = Moderate Damage and Test Weight Loss Starts
    160° and above = Severe Damage (Physical Breakage and Severe Test Weight Loss)


    Touch Screen Control Panel

    Touch Screen Control Panel
    GSI’s touch screen control panel is the most advanced and reliable dryer control system on the market. It offers computerized control of all dryer functions and self diagnoses dryer problems eliminating the guesswork associated with traditional controllers. The touch screen is very simple to operate providing instant information via a large color display. It calculates total dryer time, bushels per hour and total bushels dried. Memory features in the unit maintain a history of past dryer operation and a permanent service record.


    Control Box
    The control box is housed in a metal NEMA IV enclosure. The windowed design of the box allows all dryer operations to be viewed through the lockable windowed door and also protects all control switches, indicators, and controls. For convenience, the control box can be remote mounted or mounted at the dryer. The touch screen control panel, pictured at the left, is totally computerized using Allen Bradley industrial controls and communicates with the dryer power box via an DH485 communication link.

    Control Box

    The dryer power box is mounted in a large NEMA IV enclosure, all of the electrical power and dryer monitoring components for the dryer are controlled by an Allen Bradley SLC controller. The electrical layout and wiring of this box is MET laboratories certified, making the box meet all U.S. and Canadian safety standards. This will provide a long reliable control system for the dryer.

    The electronic control panel indicates any malfunctions via a full color graphical display. The display provides continuous visual feedback on the current dryer status as well as a convenient means of setting operating parameters and options. Most set points and status screens are accessed by simply touching an on-screen object. This clear and simple control system saves valuable time in dryer operation and the area of troubleshooting.


    Heat Plenum Chamber

    Heat Plenum Chamber
    The heat plenum chamber is entirely surrounded by a 12.75" grain column. All heated air must pass through the grain column resulting in total use of heated air. Stainless steel, smooth sidewall construction with .078" and .0625" perforation diameter helps retain particulate matter.

    Inside:
    • Heating section has .078" perforation sidewalls.
    • Cooling section has .0625" perforation to minimize particulate matter entering the cooling section.

    Outside:
    • Heating section to the Grain Inverter has .078" perforation sidewalls.
    • Grain Inverter to the cooling section has .0625" perforation sidewalls to contain the particulate matter.
    • Cooling section has .078" perforation sidewalls.


    Access

    Easy Access
    The tower dryer was designed with convenience in mind. Catwalks, ladders and cages are provided on all areas of the dryer for easy accessibility. All areas of the dryer can be easily accessed through up to four entry ways. Cleanout, inspection, and general maintenance are never a problem.

    Heavy-duty materials and strong structural design provide a solid support for ladders and platforms.


    Specifications

    TOWER DRYER    
    Model
    1200
    1500
    1800
    2000
    2400
    2500
    3000
    3500
    4000
    4718
    5000
    6000
    7000
    10000
    Drying CFM
    60,500
    77,100
    81,800
    98,600
    108,300
    121,950
    145,200
    175,800
    192,750
    213,600
    282,000
    304,800
    337,500
    500,00
    Cooling CFM
    30,250
    38,550
    40,900
    49,300
    54,150
    60,975
    72,600
    87,900
    96,375
    106,800
    141,000
    152,400
    168,750
    250,000
    Blower HP
    60
    75
    75
    100
    100
    3-40
    3-50
    3-60
    3-75
    3-75
    3-100
    3-100
    3-125
    4-125
    Burner Capacity (BTU x 1000)
    13,068
    16,654
    17,669
    21,298
    23,393
    26,341
    31,363
    37,973
    41,634
    46,138
    60,192
    65,837
    72,900
    108,000
    Average Heat (BTU x 1000)1
    7,514
    9,576
    10,160
    12,246
    13,451
    15,146
    18,034
    21,834
    23,940
    26,529
    35,024
    37,856
    41,918
    62,100
    Grain Column
    12.75"
    12.75"
    12.75"
    12.75"
    12.75"
    12.75"
    12.75"
    12.75"
    12.75"
    12.75"
    12.75"
    12.75"
    12.75"
    12.75"
    Tower Diameter2
    12'
    12'
    12'
    12'
    12'
    18'
    18'
    18'
    18'
    18'
    24'
    24'
    24'
    30'
    Overall Height
    53'9"
    60'5"
    70'5"
    77'1"
    87'1"
    68'7"
    78'7"
    88'7"
    98'7"
    111'11"
    103'2"
    113'2"
    123'2"
    134'7"
    Heat Holding (bu)
    719
    914
    1,158
    1,256
    1,499
    1,511
    1,813
    2,210
    2,512
    2,964
    3,479
    4,042
    4,452
    6,030
    Cool Holding (bu)
    305
    305
    354
    451
    500
    529
    680
    737
    888
    1,038
    1,126
    1,177
    1,381
    1,846
    Total Column Holding (bu)
    1,024
    1,219
    1,512
    1,707
    1,999
    2,040
    2,493
    2,947
    3,400
    4,002
    4,605
    5,219
    5,833
    7,876
    Total Dryer Holding (bu)
    1,427
    1,622
    1,915
    2,110
    2,401
    2,977
    3,430
    3,883
    4,337
    4,939
    6,294
    6,908
    7,522
    10,531
    BPH Capacity3 (20%-15%)
    1,200
    1,500
    1,800
    2,000
    2,400
    2500
    3000
    3,500
    4,000
    4,700
    5,000
    6,000
    7,000
    10,000
    BPH Capacity3 (25%-15%)
    720
    900
    1,080
    1,200
    1,440
    1,500
    1,800
    2,100
    2,400
    2,820
    3,000
    3,600
    4,200
    6,000

    1 At 50 degrees ambiant temperature.

    2 Dimensions exclude outside catwalk.

    3 Capacities listed are wet bushels/tonnes, for mature #2 yellow shelled dent corn at listed moisture content and are estimates based on
    drying principles, field results and computer simulation. Variance may occur due to grain's physiological factors
    (kernel size, chemical composition, variety, maturity), excessive fines, adverse weather conditions, etc.