Types of Rotary Feeder - Maschinen Fabrik (India) Private Limited

**Standard Rotors :**
(a) Closed Rotor Generally used with bag filters, cyclone separators, Silo, Screw Conveyors and other low pressure conveying systems. This type is provided in standard models.
	(b) Open Rotor Generally suited for general range of products upto a pressure of 1.0kg/cm². Stuffing box gland type seals are provided with suitable packing materials.
(c) Adjustable Bladed Rotor Suited for most products to be conveyed under a differential pressure of 1.5 kg/cm²
	(d) Scalloped Rotor Suited for sticky materials, often provided with Teflon coating for handling food grade materials or where product build up is to be minimised. Maximum working pressure of 1.0kg/cm².

Selection :

The following procedure of selection of right size, type and speed of Rotary Feeder is recommended.

Properties of material handled are to be ascertained. A set of characteristics of standard materials along with the data is available on request.
Temperature, lump size, abrasive index of material are to be correctly known. Large lump sizes are handled in bigger models and slower speed are selected for higher abrasive index of material.
The required capacity is to be ascertained by the volumetric efficiency of the Rotary Feeder for various types of feeding conditions and operation speeds, refer Table B ( Technical Data )
Theoretical displacement of various sizes over a range of speeds is given in Table C.
Standard dimensions of various models are given in Table A.
Specifications and dimensions must be certified for installation by our engineers.

**Standard Specification :**
Body :	Carbon Steel Fabricated, Stress Relieved / Stainless Steel AISI 304/316
End Plates :	Carbon Steel Fabricated, Stress Relieved / Stainless Steel AISI 304/316
Rotor :	Carbon Steel Fabricated, Stress Relieved / Stainless Steel AISI 304/316
Shaft :	C-45 / SS-304 / SS-316 Construction.
Bearings :	Outboard, Self aligning Flanged block type, externally regreasing nipples.
Shaft Seal :	Stuffing box gland type with Graphited Asbestos / Graphoil / Teflon impregnated packing materials
Drive :	TEFC Helical Geared Motor, Power Transmision chain, Sprockets, Safety enclosure, Tensioning screw.

**Special Constructions :**
Body :	Replacable hard chromed bore liner. (For abrasive duty applications).
End Covers :	Replacable hard chromed end discs.
Rotor :	Teflon lining (for Sticky / food grade materials)
Bearings :	High temperature cintered metal oilite bearings IS:3980
Glands :	Air / Nitrogen purging through lantern rings ( for fines / abrasive )
Discharge :	Venting air pockets
Wear Tip :	Rubber / Nylon / Polythene / Teflon / M.S./S.S.

**Standard Dimensions :**
Size	A	B	C	D1	D2	E	F	H	L	L1	L2	L3	S	M X Lg	No X lg	TF	U	V	W
RF150	150	230	200	35	30	100	-	310	592	243	18	70	11.5	M10x25	M12x40	15	33	8	60
RF200	200	280	250	45	40	85	80	360	656	271	22	70	11.5	M10x25	M14x45	15	43	12	60
RF250	250	346	310	45	40	100	110	440	726	306	22	70	13.5	M12x30	M14x45	20	43	12	60
RF300	300	410	370	55	50	120	130	490	814	339	23	90	13.5	M12x30	M16x50	20	53.5	14	80
RF350	350	460	420	55	50	140	140	540	874	364	23	100	13.5	M12x30	M16x50	20	53.5	14	90
RF450	450	584	534	60	55	110x5	-	670	1022	427	29	110	17.5	M16x35	M16x50	22	59	16	100
RF600	600	734	684	60	55	140x5	-	820	1172	502	29	110	17.5	M16x35	M16x50	22	59	16	100

**Volumetric Efficiencies :**
Speed (RPM)	1-10	11-20	21-30	31-40
Full Head Material	0.95	0.75	0.65	0.50
Manually Loaded Hopper	0.90	0.75	0.60	0.50
Conveyor Fed	0.90	0.75	0.50	0.40
Cyclone Separator Fed	0.75	0.50	0.40	0.33

**Theoritical Displacements :**
Model	Displacement Cu.Mtr / RPM	Displacement at RPM ( Cu Mtrs / Hr.)
		5	10	15	20	25	30	35	40
RF150	0.002	0.6	1.2	1.8	2.4	3.0	3.6	4.2	4.6
RF200	0.005	1.5	3.0	4.5	6.0	7.5	9.0	10.5	12.0
RF250	0.011	3.3	6.6	9.9	13.2	16.5	19.8	23.1	26.4
RF300	0.019	5.7	11.4	17.1	22.8	28.5	34.2	39.9	45.6
RF350	0.030	9.0	18.0	27.0	36.0	45.0	54.0	63.0	72.0
RF450	0.069	20.7	41.4	62.1	82.8	103.5	124.2	144.9	165.6
RF600	0.167	50.1	100.2	150.3	200.4	250.5	300.6	350.7	400.8

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Note : Please take a print out of the RFQ and send us by fax at (91 33 2474 7762 / 276 1775) or by post at Maschinen Fabrik (India) Pvt. Ltd., 11/45, Panditia Road, Kolkata 700 029