1. The main technical specification and the gargets of the function

2. Technological process

3. Structure of the main parts and adjustment

4. Disassembly and assembly of the roller

5. Teeth arrangemnet of the roller and replace of the roller

6. Transmission route and the adjustment of the v-belt

7. Reel separator

8. Safe operation of the machine

9. Common troubles and fixing methods

10. List of the vulnerable parts

11. List of packing

1.The main technical specification and targets of the function

2. Technological process

Technological process(Fig.1)

After being cleaned and tempered (moisture content shuld becontrolled within 13%-15%), the wheat is lifted to the hopper i by hand, then the wheat fed evenly by feeding roller is ground between the fast roller 4 and slow roller 5. the ground wheat enter the reel separator and is separated through the down hopper 6. the bran flows out through the bran vent, the flour flows out through the flour vent. the bran is fed into the hopper manually once more, ususlly the overtail should be ground five times. the flour of the first three times is F2 flour, the other is the second- rate flour, F2 flour mixed with second-rate flour is standard flour. It can be lifted with pneumatic lifter.

Technological process (Fig. 1)

Technological process figure: 1. hopper 2.deflector 3:feeding roller 4: fast roller 5: slow roller 6: down hopper 7: reel separator

3. Structure&adjustment of the main parts.

In order to keep the machine in good conditions and prolong its service life, it should be frequently adjusted, maintained and repaired.

Thus the operator should know well the procedures and the knowledge of adjustment, maintenance and repairment of the whole set and each parts.

(1). Feed control(Fig.2)

The new products have been adjusted to normal position, but is may be loose after long disance transportation . so it must be adjusted again according to Fig2; Loosen the nut 4, turn the flow adjustinghand wheel5 clockwise, make the gap up to 0.2mm between deflector2 and feeding roller1, then turn the nut4 nestle closely to adjusting casing coupling3 and fasten two nuts each other.

Flow is controlled by the clearance between deflector2 and feeding roller. because the particle of the feed is diffeerent every times, so the gap should be adjusted according to the particle. at the same time , the thickness of the flow must be proper and cover evenly, if too thick, it cna't be ground completely, if too thin, the output is low and the roller also damaged easily. The flow decrease when turn the handwheel clockwise and increase if contrary.

Flow adjustment (Fig.2)

fig2 flow adjustment

1.feeding roller 2.deflector 3.casing coupling 4.nut 5.flow adjusting handwheel 6.flow meter 7.screw.

(2). Adjustment of roller gap:(see Fig.3)

Initial adjustment:

First shut the brake, then adjust the spring and make them shorten 8-10mm and the pressure of two springs should be epual. check the gap of the rollers with eyes or with a stell plate of 0.5-1.0mm.

Fine adjustment:

Feed a piece of paper of 300mm wide into the roller, then turn the gap adjustin handwheel 1 to adjust the gap, turn the v-belt by hand, obserying whether the rolling trace is even or not. If not, adjust the nut7 to make the fast rollers and slow rollers parallel. After shutting the brake, the washer 8 on the cellar bolt should be movable slightly. Don't press it too much. at last adjust two nuts 13 to make the shortened spring epual.

Adjustment druing the operation

Check whether the ground stock is even or not, if not, adjust the pressing spring13.

Gap adjustment (Fig.3) 

fig3. gap adjustment

1.gap adjusting handwheel 2.gap meter 3.screw 4.locking device 5.cellar bolt 6.fast roller 7.handle 8.slow roller 9.nut 10.washer 11.ball bearing housing r ing spring ing ring 15.nut

(3). Adjustment of the wallboard (see Fig.4)

The wooden (or nylon) wallboard 2 in the inner wall of the two ends of the shell is used to prevent the grain from leaking from the ends of the roller. When the diameter of the roller becomes smaller, loosen the nut 3 and make the wallboard downwards until the grain is not leaking. then, fasten the nut.

1.case 2.left ,right wallboard 3.nut

4.Disassembly and assembly of the roller

4.1. Disassemble the protection cover, v-belt and the pulley of the fast (slow) roller axles.

4.2. Disassemble the gear box and the gear on the right of the machine.

4.3. Disassemble the grinding door and four brackets.

4.4. Disassemble the four besring housing (Fig 5)

4.4.1 Disassemble the cover of the bearing 1.

4.4.2 Make the ear of the thrust washer straight from the groove of the nut 2 and turn the counter clockwise.

4.4.3 Hit the locking sleeve slightly inwards with the hard wooden stick, to separate from the roller axle7.

4.4.4 Disassemble the bearing house with the bearing, locking sleeve and positioner from the roller axle.

4.4.5 Take out the roller from the bearing, locking sleeve from the grinding door and take care of surface of the rollers.

4.4.6 Assemble are contrary to the above (1-5), and the connection surface should be cleaned. the bearing is rubbed in lubricant. (The bolt should better be rubbed in engine oil)

5. Teeth of roller arrangement and the replace of the gear

5.1 Teeth of roller arrangement

The arrangement of the new grooved roller should be arranged as blunt-to-blunt. after the teeth are worn or productivity is obviously decreasing, the fast and the slow rollers should be exchange or reverse the slow roller to make the arrangement blunt-to sharp. If teh teeth is worn and the productivity is decreasing further, the teeth should become sharp-to sharp by reversing the fast roller. When the tooth point become big surface and the pruducitity is decreasing worse, the power consumption is obviously increasing, the grinding roller should be grooved. Usually after grinding 10000KG flour, the rolle should be grooved again. Recommended teeth mumber :19-20 teeth/inch

angle: 35°/65° slope:1:8

Arrangement of the roller (Fig.6)

5.2 Replacement of the gears: (see table 2)

After the rollers grooved for more time, the diameter of it would become small, and when the centre distance of the roller become smaller gradually, it is necessary to replace the gears.

table 2

6. Transmission route and the adjustment of the belt

6.1 Transmission route (Fig.7)

The motor 1 drives the linking belt wheel 4 and make the fast roller 5 work, then the slow roller 9 begins to work with the joining gear (10) and gear (11). at teh same time , the small pulley 6 of the clutch to make the feeding roller 8 begins to work, pulley 2 of reel separator can be driven by pulley 4.

Fig7: transmission route

1.motor 2.pulley 3.reel separator 4.pulley 5.fast roller 6.pulley 7.pulley 8.feeding roller 9.gear 10.gear 11.slow roller

6.2 adjustment of the transmission belt

6.2.1 loosen the locking nuts of the motor bracket and move the motor, make the tension of the v-belt proper (the motor would be heat if the belt is too tight, but if the belt is too loose, the speed would decrease) then fasten the nuts.

6.2.2 Adjust the v-belt of the reel separator

Move the tensional wheel to make the tension proper.

7. Reel separator

.1 Structure of the reel separator

The reel separator is composed of the cage, brush, bran panel and case, the cage is supported by three bolts of M12, and covered with silk. When the silk is used for a long time, the six nuts of M12 should be adjusted in time and make the silk tight.

7.2 Replacement of the silk

You can obtain different fine flour by replacing the silk. when replace the silk, it should be proper, if too tight, it would affect the quality of the flour and the life of the silk. If too loose, the stock can't be sieved completely and easy to damage.

7.3 Replacement of the brush

The brush inside the cage is used to clean the silk. when the brush is damaged, you should adjust in time and make the brush touch the silk slighty. don't brush too much so as to prolong the life the silk.

8. Safe operation of the machine

8.1 Installation of the machine

The machine should be installed firmly and correctly. It must be fixed into the concret foundation (or wooden cushion plate) with M12 foundation bolt.

8.2 Lubrication

The foundation of the machine can be given fully play and its life can be prolonged under the condition of good operation and repairment.

The librication is one of the important repairments.

8.2.1 Lubrication of the bearing (table 3)

Table 3

8.2.2 Lubrication of the gear

The lubricating method of the gear is using oil pool, No. 45 machine oil is used during work, the oil height should suberge the big gear 12-15mm, clean and remove the dirt when replace teh oil.

8.2.3 Lubrication of the other parts

All the rubbing parts of the turning, moving should be slightly lubricated.

8.3. The gap and dimension of the new machine have been adjusted into the correct position, so it is not necessary to adjust, but the user should inspect and see whether the parts are missed or damaged as follows:

8.3.1 . Inspect before running. Inspect the tightness and reliablity of the safe equipment.

Inspect and see whether the screws is loosse, whether the gap of the roller is even, whether the motor touch the ground well.

8.3.2. Inspect when running unloadly.

Start the motor and see whether the direction of the pulley is correct or not. And whether its speed fulfil the repairment. Adjust the handwheel 1 according to figure 3 and make the roller have some clearace, push the operating handle 7 to shut the brake and see whether there are cross motions or bearing noise, if normal, operate the machine unloadly 30 minutes.

8.3.3. Inspect after stopping the machine.

Inspect and see whethe the brush and goose feather brush is good, the silk is good.

8.4. Operation

After installation and adjustment, the new machine grind 40kg bran to get rid of the dirt, then start to grind wheat.

8.4.1. Turn the miniadjusting handwheel to the required position.

8.4.2 Put the grain into the upper hopper.

8.4.3 Switch on the button (three-phase brake) to operate the machine.

8.4.4. Slowly push the operating handle to working position and check the fineness of the ground granin. Adjust the gap handwheel and feed handwheel separately.

8.5. Cleaning

8.5.1 After work, take away the bran from the machine. Open two grinding doors and windows to exharst the hot air. At the asme time, operate the machine unloadly for several minutes.

8.5.2 After work, take away the sieve cage and clean it up, use a brush to clean the lfour in the silk and inside the sieve cage.

8.6. Attentions

8.6.1. Carefully and slowly shut the brake, otherwise the parts may be damaged.

8.6.2. No iron nail, metal piece or hard stone is mixed into the machine.

8.6.3. Prohibit pushing the machine to working position when running unloadly, when the upper hopper has small stock, you must switch off the brake immediately.

8.6.4. If the vulnerable parts of the machine is damaged, you must replace in time.

8.6.5. This machine is mainly used to grind the wheat. If grind the maize, the roller and the silk should be replaced by coarse ones.

8.6.6. This machine is not suitable to grind soybean and other oiled grains.

9. Common breakdown ad method to settle

10.Stipulation of graranteeing the repairment, replacement and return for the product quality

1.Under the conditions of strictly abiding by the stipulation of operating, maintaining, from the date of purchase, our Co.,Limited grarantee to repair, return if the machine can't run or damage owing to the poor quality(except the vnlnerable parts).

2. When the user asks us to repair or replace the bad machine, operation instruction certificate of inspection, invoice must be shown, otherwise the bad machine can't be repaired or replaced.

11. Packing list

12 Technical Data