rotary press trailer system specification - The City of Titusville, Florida

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The following materials shall be provided for the Rotary Fan Press and related components unless specified otherwiseherein:‣ Housings‣ Frame‣ Filter Plates‣ Filter Plate Supports‣ Center Seal‣ Piping‣ Tubing‣ Discharge Chutes‣ Hardware, Fasteners, Springs,Clips, Etc.Carbon Steel (unless specified as stainless steel)Carbon Steel (unless specified as stainless steel)Stainless Steel and Hard Chrome Plated304 Stainless SteelGlass Filled PolySchedule 80 PVCNylon/PolyStainless SteelStainless Steel2.03 – Rotary Fan PressA. The Rotary Fan Press shall be comprised of at least the following components:‣ Main Drive System.‣ Two (2) Dewatering Channels, Individually Mounted On Opposing Sides of Drive.‣ Filter Wheels and Slotted Elements.‣ Easily Accessible Inspection Windows.‣ HD Support Base.‣ Pneumatically Controlled Restrictor Gates.‣ Internal and External Channel Wash.‣ Cake Discharge Chutes.B. The main drive system shall be low speed, high torque, helical/bevel foot mounted to the HD epoxy coated steelbase. It shall be fabricated according to ANSI/AGMA 6010 standards with a minimum AGMA standard of 9.The output shaft shall be made of ANSI 17-4 stainless steel or better for maximum service life. The incorporateddesign of the main drive to the channel housing shall not allow direct contact with the sludge, filtrate orcake at any time. The robust construction of the main drive shall be used to mount and support the inner channelhousing by bolting to manufacturer’s engineered mounting holes, preventing leakage or gear misalignmentcaused by shaft mounting. Flanged mounted electric drive motor shall be a 3.0 hp, 480 Volt, 3 Phase, 60 Hertztotally enclosed, wash down/VFD rated, high efficiency motor with a minimum service factor of 1.15.C. All components of the Rotary Fan Press shall be engineered for long, continuous and uninterrupted service. Allfasteners shall be of stainless steel and all welding shall be in accordance with the latest applicable codes of theAmerican Welding Society. The Rotary Fan Press construction shall allow easy access to internal components,operational adjustments, and routine maintenance shall be possible without taking the Rotary Fan Press out ofservice. All servicing of the equipment shall be within the building clearances established on the drawings provided.D. Both the inner and outer housing shall be of one (1) piece constructed of a combination one inch (1”) thick steelring and heavy plate powder coated. The outer housing shall have a clear and sealed hinged window for viewingand access to the filter screen outer support for all dewatering channels. The channel housings shall containall liquids within themselves and have a three inch (3”) filtrate discharge located in the bottom of each side ofthe housings.E. The dewatering channels shall have pneumatically adjusted radial seals, to maintain the seal for the outer filtersupport wheel. Any equipment requiring any manual adjustment for the radial seal shall not be considered acceptablefor this application.Rotary Press Trailer System Specification Page 8 of 16
F. Each channel shall have an inner and outer filtration element and filter element support made of 304 stainlesssteel. The filter element supports shall be mounted and attached to the common drive shaft that is directly attachedto the gear reduction drive of the Rotary Fan Press. Under maximum loading conditions, the elementsupports shall not have a deflection greater than 0.005” over the entire surface area or require internal bearingsfor support of the element support wheels.G. The dewatering channel filtration elements shall be constructed of two (2) slotted non-clogging filter screenswith supports constructed of 304 stainless steel, separated and sealed by a poly-glass filled channel center seal.H. Each of the Rotary Fan Press dewatering channels shall have both internal and external filter wash options. Thewash water time intervals shall be operator directed through the main operator panel. Washing of the filter elementsshall be capable of being done without interrupting the dewatering process at any time. The Rotary FanPress internal filter screen wash requires sixteen (16) gpm at a minimum of forty-five (45) psi per channel andthe external filter screen wash requires sixteen (16) gpm at a minimum of forty-five (45) psi per channel. Theincoming water connection shall be 1-1/2” FNPT to the distribution manifold which contain the 110V solenoidoperated valves for controlling the water flow.I. Each dewatering channel shall have a tapered pneumatic adjustable self-compensating glass filled poly sludgecake restrictor gate. With the restrictor gate in its fully open position it shall not restrict the sludge cake openingin any way.J. Individual 304 stainless steel cake discharge chutes shall be provided for each dewatering channel. Each cakedischarge chute shall have an easy to remove inspection cover to gain access to the cake discharge area of theRotary Fan Press.2.04 – Sludge Feed PumpA. A positive displacement rotary lobe sludge feed pump shall be used to provide adjustable and even feeding ofthe sludge stream to the press. The sludge feed pump shall be capable of supplying 125% of the specifiedmaximum speed, not to exceed four hundred-fifty (450) rpm. This combination shall be direct coupled andmounted on one (1) common base and securely fastened to the trailer floor. Progressive cavity pumps are notacceptable for this specification.1. Rotary Lobe Pump Will Be “Böerger” or Equal.15-120 gpm Under 450 rpm.Suction 3”, Discharge 3”, 150# ANSI Flanged Stainless Steel.Epoxy Coated per Section 2.13.2. Pump Drive Will Be “Nord” or Equal.5 hp with A Min 1.15 sf.Ratio: 4:1Epoxy Coated per Section 2.13.2.05 – Electrical Control Panel (General)A. An electrical control panel shall be furnished with the Rotary Fan Press Trailer System to control the Rotary FanPress functions and those of related ancillary equipment specified herein. The panel shall be pre-assembled,pre-wired and shall include all controls necessary for semi-automatic and manual system operations. The panelshall be suitably wired for connection to a 480 Volt, 3 Phase, 60 Hertz power source. A step down transformerprovides 120V AC control power and the DC voltage shall be 24V.B. Wiring shall be accomplished in a neat and organized manner through PVC wire duct, where practical, and tiedsecurely in position with nylon cable ties when not. All trailer mounted conduit shall be Schedule 40 PVCand/or non-metallic liquid tight conduit.Rotary Press Trailer System Specification Page 9 of 16
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Page 3 and 4: C. Within five (5) business days of
Page 5 and 6: C. Each copy of the manual shall be
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Page 12 and 13: 2.08 - Trailerby the PLC and will t
Page 14 and 15: Fine Adjustment Sensitivity.Four (4
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rotary press trailer system specification - The City of Titusville, Florida

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