SPIRAL CONVEYORS STC - STCM - STCV

Transcription

1 Shaftless Spiral Conveyors MACHINE DESCRIPTION R.E.M. srl range of screw conveyors is a broad and vaste selection where units for every application can be found. R.E.M. srl screw The range includes: - Shaftless Srew Conveyors model STC - Mixing Shaftless Screw Conveyors model STCM - Vertical Shaftless Screw Conveyors model STCV The models are all based on the same technology Screw conveyors are made of the following sections: - Screen - Transport section (tube or trough) - Discharge w/ or w/o compactor - Drive - Support R.E.M. srl offers this type of machine, that can treat the following materials: - dewatered, conditioned or thickened biological sludges - screened materials containing high percentages of sands - solid urban waste - floating substances from civil or industrial plants - waste deriving from food processing (both animal and vegetable foodstuffs). REM STC screw conveyors are composed of a duct (trough) in a U shape that contains a screw which, according to the customer s needs, can be of medium or large thickness; the screw contained in the conveyor has the characteristic of not being equipped with an internal shaft. This allows the machine to be able to process materials whose entangled or thread-like nature doesn t succeed in clogging up the processing zone on the whole length of the conveyor. On the bottom of the conveyor there is a liner of HDPE material in the form of plates that are easily adapted at the base of the trough and fastened to it by external nuts and bolts. This liner is totally antifriction and wearproof. At the machine outlet it is possible to fit an axial type of outlet. The machine is completely closed thanks to covers fixed to the structure by nuts and bolts; this, clearly, makes it possible to operate without any squirting, leaking and bad smells that can be given off by the treated material. REM STCM mixing screws, shafted or shaftless, are made of special steel and completed with paddles that are attached to the flighting (shaftless) or to the shaft (shafted). The shafted version features a shaftless section at the loading endside which does both the feeding system and the support of the mixer itself. The design of the paddles is studied to improve the sludge/lime mixing and conveying ability of the machine. Queste palette vengono realizzate in particolare per migliorare la miscelazione di calce e fanghi. The STCV conveyor is a system analog to the STC; this conveyor differs from standard for its vertical installation which allows an installation in a tight space. The footprint is very small as it has a tubular body which contains the screw. The tubular construction assure that no leaks or odours may occur. WORKING LOGIC FOR SHAFTLESS SCREW CONVEYOR - MOD. STC The screw conveyor compactors are equipped with an inlet zone that, depending on the flow rate requirements of the incoming material, can have three different sizes, i.e.: 1. SQUARE INLET 2. RECTANGULAR INLET 3. INCLINED INLET The material is conveyed from the inlet zone to the outlet. The screw conveyors are perfectly adaptable machines, in length, to the transport requirements of the material. MAIN FEATURES MOD. STC The shaftless screw conveyors, mod. STC, are offered in different variants that do not need intermediate bearings. STC screws have the following characteristics: 1. Standard execution in st. st. AISI 304L/AISI 316L 2. Inlets and outlets having square, rectangular or inclined (15 /30 ) shape 3. Trough made of st. st. AISI Spiral made of high resistance micro-alloy carbon steel, st. st. AISI 304/316 (optional) 5. Liner made of HDPE or (optional) wear strips made of st. st. AISI No mechanical parts in direct contact to conveyed product 44

2 7. Low speed - No blocking or clogging even when conveying fibrous material 8. Entirely sealed unit for leackage and odour-free environments 9. Possibility to discharge in bags 10. Extremely easy to transport materials even of difficult composition 11. Complete absence of emission of bad smells, as equipped with closing covers 12. Minimum overall dimensions and maximum versatility, high processing outputs. GENERAL DIMENSIONAL DATA FOR SHAFTLESS SCREW MOD. STC The data in the chart alongside are to be considered approximate; since the machine is able to process materials of different types and therefore of different organic compositions, take these values as illustrative references that must be clarified and requested from our Engineering - Sales department. STC STC150 STC200 STC250 STC300 STC400 STC FLOWRATES - m 3 / h STC INCLINATION 0 INCLINATION 30 - max. S TC150 S TC200 S TC250 S TC300 S TC400 S TC WORKING LOGIC FOR MIXING SHAFTLESS SCREW CONVEYOR - MOD. STCM Screw mixers have a loading section similar to the conveyors STC. The material is conveyed from the inlet to the mixing zone where the paddles induce the required mixing effect for the proper dispersion of the lime into the sludge or any other material.the mixed product is at the same time conveyed toward the outlet. As the unit combines the conveying and the mixing feature, it may be extended in length to accommodate the layout needs. MAIN FEATURES MOD. STCM 1. Standard construction AISI 304L/AISI 316L 2. Square, rectangular or inclined Inlets and outlets (inclination 15 deg max) 3. Paddles made of HRS mild steel (standard) or AISI304/AISI316 (optional) 4. Liner is HDPE (standard) or AISI304 wear bars (optional) 5. No mechanical components in direct contact to the handled product. 6. Low speed 7. No clogging or blockages risks even with fibrous materials 8. Unit entirely enclosed for odour/spillages prevention 9. Possibility to discharge in plastic bags 10. Ease of conveying of not-free-flowing materials 11. No nuisance or emissions 12. Perfect mixing of the materials (even liquids as option) 13. Easy and quick maintenance 14. Low power consumption GENERAL DIMENSIONAL DATA FOR MIXING SHAFTLESS SCREW MOD. STCM The data in the chart alongside are to be considered approximate; since the machine is able to process materials of different types and therefore of different organic compositions, take these values as illustrative references that must be clarified and requested from our Engineering dep. 45

3 STCM STCM150 STCM200 STCM250 STCM300 STCM400 STCM FLOWRATES - m 3 /h STCM INCLINATION 0 INCLINATION 15 - max. STC150 60% STC200 60% STC250 60% STC300 60% STC400 60% STC 60% WORKING LOGIC FOR SHAFTLESS - MOD. STCV The vertical shaftless conveyors are equipped with a round inlet which requires to be flanged to a horizontal screw feed which screw enters the inlet until reaching the tube of the vertical unit. The feeder assure that the material is always conveyed upwards without falling backwards. From the inlet the material is conveyed toward the outlet at the top end. The vertical shaftless conveyors are units suitable for handling different type of materials. MAIN FEATURES MOD. STCV The shaftless vertical screw conveyors, mod. STCV, are offered in several configurations, all of them do not require intermediate supports or hangers. The STCV conveyors have the following characterics: 1. Standard execution in st. st. AISI 304L/AISI 316L 2. Inlets and outlets having square, rectangular or inclined (15 ) shape 3. Trough made of st. st. AISI Spiral made of high resistance micro-alloy carbon steel, st. st. AISI 304/AISI 316 (optional) 5. Liner made of HDPE or (optional) wear strips made of st. st. AISI No mechanical parts in direct contact to conveyed product 7. Low speed 8. No blocking or clogging even when conveying fibrous material 9. Entirely sealed unit for leackage and odour-free environments 10. Possibility to discharge in bags. 11. Complete absence of emission of bad smells, as equipped with closing covers 12. Minimum overall dimensions and maximum versatility 13. High processing outputs. GENERAL DIMENSIONAL DATA FOR VERTICAL SCREW MOD. STCV The data in the chart alongside are to be considered approximate; since the machine is able to process materials of different types and therefore of different organic compositions, take these values as illustrative references that must be clarified and requested from our Engineering - Sales department. STCV STCV150 STCV200 STCV250 STCV300 STCV400 STCV FLOWRATES - m 3 / h n.b.: the manufacturer may modify some dimensions or sizes without prior information 46

4 D - mm 10 PRIMARY STANDARD DIMENSIONAL DATA FOR SHAFTLESS SCREW STC The information which follow describe the main components regarding this kind of screw conveyors, mod. STC. Here we remind to Customers that this ATTENTION THE MACHINE CAN BE USED IN THE INCLINATED POSITION UP TO A MAX. OF 30 A - mm D - mm STC A min. - mm A max. - mm D - mm STC STC STC STC STC STC Materials of Construction: Fabricated parts: AISI Stainless Steel 304/316 Spiral: AISI Stainless Steel 304/316/HRS IMPORTANT THE COVERING CAN BE MADE OF HDPE MATERI- AL OR THE CUSTOMER CAN REQUEST ANTIRUBBING PLACES MADE OF AISI304 STAINLESS STEEL. n.b.: the manufacturer may modify some dimensions or sizes without prior information STANDARD DIMENSIONAL DATA FOR MIXING SCREW STCM The information which follow describe the main components regarding this kind of screw conveyors, mod. STCM. Here we remind to Customers that this ATTENTION THE MACHINE CAN BE USED IN THE INCLINATED POSITION UP TO A MAX. OF 15 IMPORTANT THE COVERING CAN BE MADE OF HDPE MATERIAL OR THE CUSTOMER CAN REQUEST ANTIRUBBING PLACES MADE OF AISI304 STAINLESS STEEL. E - mm A - mm n.b.: the manufacturer may modify some dimensions or sizes without prior information 47

5 STCM A min. - mm A max. - mm D - mm E - mm STCM STCM STCM STCM STCM STCM Materials of Construction: Fabricated parts: AISI Stainless Steel 304/316 Spiral: AISI Stainless Steel 304/316/HRS n.b.: the manufacturer may modify some dimensions or sizes without prior information STANDARD MAIN COMPONENTS WHICH COMPOSE SHAFTLESS SCREW STC The information which follow describe the main components regarding this kind of screw conveyors, mod. STC. Here we remind to Customers that this 1. SCREW U TROUGH (HRS / St.St. AISI304 / St.St. AISI316) 2. SPIRAL(HRS / St.St. AISI304 / St.St. AISI316) 3. LINER IN HDPE 4. COVERS(HRS / St.St. AISI304 / St.St. AISI316) 5. OUTLET - DISCHARGING AREA 6. INLET - LOADING AREA 7. ELECTRICAL MOTOR 8. GEARMOTOR n.b.: the manufacturer may modify some dimensions or sizes without prior information 48

6 STANDARD MAIN COMPONENTS WHICH COMPOSE MIXING SCREW STCM The information which follow describe the main components regarding this kind of screw conveyors, mod. STCM. Here we remind to Customers that this 1. SCREW "U" TROUGH (ST. ST. AISI304/AISI316) 2. MIXING SHAFT WITH PADDLES (ST. ST. AISI304/AISI316 / HRS CARBON STEEL WITH TUNGSTEN CARBIDE REINFORCED SURFACE) 3. HDPE LINER 4. BOLTED COVERS FOR TROUGH 5. LOADING HOPPER 6. UNLOADING OUTLET 7. PACKING GLAND SEAL 8. GEARBOX FLENDER-SIEMENS 9. ELECTRIC MOTOR STANDARD DIMENSIONAL DATA FOR FOR VERTICAL SHAFTLESS SCREW STCV ATTENTION THE MACHINE CAN BE USED ONLY IN VERTICAL POSITION Materials of Construction: Fabricated parts: AISI Stainless Steel 304/ AISI Stainless Steel 316 Spiral: AISI Stainless Steel 304/ AISI Stainless Steel 316/ HRS STCV A min. - mm A max. - mm D - mm E - mm STCV STCV STCV STCV STCV STCV n.b.: the manufacturer may modify some dimensions orsizes without prior information 49

7 F PRIMARY STCV E2 - mm F - mm G - mm H - mm L - mm E2 E STCV STCV STCV STCV STCV STCV 508 L n.b.: the manufacturer may modify some dimensions or sizes without prior information D C B A H STANDARD MAIN COMPONENTS WHICH COMPO- SE VERTICAL SCREW STCV 1. CONVEYING TUBE (HRS / AISI304 / AISI316) 2. SPIRAL (HRS / AISI304 / AISI316) 3. AISI WEARING BARS 4. ROUND INLET 5. FLANGED ROUND OUTLET 6. LATERAL ADJUSTABLE SUPPORT 7. BASE SUPPORT 9. GEARBOX 10. PACKING GLAND G 50