| Full Screen Hammer Mill |
As its name implies, Full screen hammer mill have 80 % screening area as compare to 50 % in half screen hammer mill. This machine is an answer to many fine or coarse grinding problems that we usually face. Our Full screen hammer mill has so many other features also that make it an ultimate choice. |
Efficient Grinding by maximum grinding surface |
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Dynamically balanced rotor means vibration level minimum to the Standard norms. Forward and Reverse rotation of rotor allows utilization of cutting points of hammers without wastage of time. Further hammers and hammer holding rods are heat treated for prolonged life and static balanced to avoid viberations. |
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| Quick span Locking mechanism |
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Quick span Locking mechanism of doors makes accessing the grinding chamber for screen changing etc.very easy. |
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| Interlock Sieve pressing Device |
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Interlock Sieve pressing Device makes sieve changing quickly, without any tools and eliminates unevenness of sieve. |
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| Direct Coupled Motor |
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Direct Coupled Motor with grinder means no slipping of belts and no loss of power. |
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| Rotary Feeder |
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Rotary Feeder for uniform feeding of product into the mill. For maximum safety of mill, rotary feeder is equipped with self cleaning magnet for removing metal objects etc., which can be cleaned within 10 seconds. |
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Gap adjustment by dual position of hammers on rotor allows hammer tip to screen gap-adjustment which are fit for normal grinding and fine grinding. |
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For safety reasons Hammer mill doors interlocked with main motor. |
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| Technical Specifications |
| Model |
CapacityKgs/Hr. Maize Grinding |
CapacityKgs/Hr.Mixed feed Grinding |
Capacity Kgs/Hr. |
Power (H.P.) |
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Starter
4mm |
Grower
5mm |
Finisher
6mm |
Starter 4mm |
Grower 5mm |
Finisher 6mm |
Millet grinding |
FSHM 1015 |
1800 |
3200 |
4000 |
2500 |
4000 |
5500 |
1800 |
10 - 15 |
FSHM 1525 |
2500 |
3800 |
4800
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3200 |
4500 |
6800 |
2600 |
15 – 25 |
FSHM 2040 |
4500 |
6500 |
9000
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6500 |
8500 |
11000 |
4500 |
20 - 40 |
FSHM 3075 |
6000 |
8500 |
13000
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8000 |
10000 |
13000 |
8000 |
30 - 75 |
| FSHM 50120 |
8500 |
10500 |
12000 |
12000 |
14000 |
16000 |
10000 |
50-120 |
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In most feed manufacturing facilities, the grinding operation is first or second largest energy consumer .So an efficient machine that can grind the material to the required fineness with minimum of power, will not only cut the cost of grinding but also play significant roll in producing quality pellets by helping to improve mixing, conditioning and pelleting process . |
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| FSHM-1015 |
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Lark introduces model FSHM-1015, a hammer mill specially designed for small feed mills. It can run on 10 HP motor and has solved the problems of fine grinding. It has given outstanding results on millet grinding and can be used as separate unit. For normal grinding it has provision to shift to coarse grinding. It is supplied with Inlet hopper, outlet hopper, vibration dampers. |
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| FSHM-2040 |
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Lark introduces model FSHM-2040, a hammer mill specially designed for feed mills with 4-6 MT/hr mash. For pelleting operation it can crush 3-4 MT/hr on 40 hp with 3mm hole screen.
It can run on 20 to 40 HP motor and has same features as model-1015. |
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| FSHM-3075 |
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Lark introduces model FSHM-3075, a hammer mill specially designed for feed mills with 8-10 MT/hr mash. For pelleting operation it can crush 6-8 MT/hr on 60 hp with 3mm hole screen. |
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| FSHM-50120 |
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Lark introduces model 50-120 of patented design which is specially suitable for fine grinding in pelleting operations. It is capable of grinding 10-12 ton per hour easily on 3mm hole screen using just 100 h.p only , besides it has other features also. |
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It has unique feature of Quick Gap Adjustment between hammer tip to screen which plays a crucial role in efficiency as well as quality of grinding .We can get fine feed for pelleting as well coarse feed for finisher /parent flock with equal ease. |
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Manually operated rotor break mechanism provided to stop the hammer mill quickly without wasting any time while changing of screens etc. |
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It can run on 2800 rpm or 1400 rpm as per requirement of quality of grinding required. |
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It is ideally suitable for 14-16 MT per hour Mash feed Plant and 10 MT per Hour Pellet Plant. |
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OUR PATENTED QGA - TECHNOLOGY |
Inventing this technology is one more feather to our cap and a total grinding solution for all types of grinding. “Quick-Gap-Adjustment” QGA, as its name implies this technology is a boon for grinding different sizes of products as fine/ Medium/ coarse by quick change of gap between hammer tip and screen, thus creating ideal parameters for optimum grinding of product. |
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| Grinding different sizes of product (fine/ Medium/ coarse) |
In poultry feed, we need different particle size of feed referred to as fine or coarse to feed a day old chicks to full age broiler/ chicken. For optimum grinding we need different parameters for fine grinding or coarse grinding.
In simple hammer mills, the required particle size is obtained by changing the hole size of screens while the other parameter of hammer mill such as tip speed of hammer mill, gap between hammer tip to screen, remain same.
In modern hammer mills, to obtain coarse/fine grinding following step are taken.
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Screen of smaller hole for fine and bigger hole for coarse feed is used. |
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Speed of motor can be changed by fitting a VFD (Variable frequency drive) or dual speed motor or D.C. motor. |
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Gap adjustment between hammer tip to screen is varied by changing the position of hammers on different PCD on circular plates of rotor. |
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| Our Modifications: |
Our Modifications relates to point III Gap Adjustment between hammer tip to screen.
In prevailing method of gap adjustment, as the no. of hammer on rotor goes on increasing with increase in size of hammer mill. Particularly on bigger hammer mills it wastes so much time to remove all the hammers from one position and fitting in other position. Sometimes, requirements are there to shift from one setting to other many times a day. So practically it is not usually possible to always change the gap by altering the position of hammer for varying quality of feed because it causes huge production loss as well as trained person are required for it. So usually only changing of screen is done to achieve the target. It result compromises on quality of feed and production loss.
If a hammer mill is set for smaller gap say 10 mm for fine grinding with 3 mm hole screen. It will not give required coarseness of feed, if 6 mm hole screen is employed until gap is increased to suit 6 mm hole. By increasing hole size of screen, uneven grinding is achieved.
Similarly if a hammer mill is set for coarse feed with say 25 mm gap with 6 mm hole screen for coarse feed, it will get jammed if operated on 3 mm hole screen or otherwise will give poor output.
In our modified design, gap adjustment can be done in two ways: - |
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Fixture on Screen: - a) for coarse grinding clamping is fixed inside of screen so as to provide more gaps.
b) For fine grinding clamping is fixed on outside of screen to give small gap. |
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Fixture on screens for coarse grinding only:- In this design simple screens are used for fine grinding with no clamping/ fixtures on it.
But for coarse grinding screens with inside clamping are used. To increase the gap to accommodate coarse screen, top & bottom screen holding assembly is moved either mechanically using cam shafts or pneumatically or hydraulically. Adjustment in clamping device is also provided to compensate for bigger gap screen. |
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Different Models in QGA series |
All our full screen models as mentioned above are available with optional QGA feature. |
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Rotary Feeder: |
Even if a hammer mill is properly designed and well matched to its required job, it may not perform well if it not fed properly.
A typical hammer mill feeder is expected to meet following requirements.
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The feeder must provide a "UNIFORM CURTAIN" of materials to hammer mill grinding chamber. |
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This curtain of material must be fed FULL WIDTH across the Grinding chamber of hammer mill. |
| Our latest designed Rotary vane type Hammer Mill Feeder has following features: |
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Conventional vane type feeder has 6 or 8 vanes across the width of grinding chamber which has the drawback of feeding in slugs that causes uneven feeding.
But our modified feeder has long vanes converted into multiple cups that provide instead of 6 discharge points to 24 or more depending on size, which results more even feed rate and distribution of material across full width of mill intake. |
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Feeder Drive Panel: In this variable frequency drive (VFD) is used to control the speed of feeder .It has following features:
(a) In auto mode VFD controls the feeding rate automatically with respect to load of main motor. This drive communicates the "Load" or "Amperage" of Hammer Mill main drive motor to the feeder motor to adjust the feeder speed. This ensures that the feeder does not supply the mill more material than Hammer Mill main drive motor can tolerate.
(b) In Manual Mode, we can control feeding manually through a potentiometer. |
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Incase of any major problem in electronic Feeder Drive Panel , we have provided a direct mechanical bye pass mechanism which allows gravity feeding through slide gate control to keep the plant running. |
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Fuel Width self cleaning type magnets provided to prevent iron thrash entering the mill with collection tray. |
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