:2000 QUALITY MANAGEMENT SYSTEM CERTIFICATION

Operation Manual of

JXFM110 Model Hammer Type Whirlwind Mill

Shanghai Jiading Cereals and Oil Instruments Co. Ltd.

China National Cereals and Oil Quality Supervision and Inspection Center

Sales Hotline .: ,   

After Sales Service Hotline .:      Zip Code: 201800

Address:  Lane 2420 No. 12, Huancheng Road, Jiading District, Shanghai, China

1. General Description of Operation Principle of Hammer Type Whirlwind Mill         

When making physical inspection and chemical analysis of the grain quality, the grain departments normally pulverize the sample to be measured and detected.

JXFM110 model hammer type whirlwind mill is developed and produced by Shanghai Jiading Cereals and Oil Instruments Co. Ltd. (hereinafter referred to as the Company) under the cooperation with China National Cereals and Oil Quality Supervision and Inspection Center. The company has absorbed advantages of same category of foreign products, so that the product becomes a crushing equipment which has features of smart appearance, compact structure, convenient operation, stable running and long service life. The mill is suitable to be used in grain processing industry for pulverizing of intermediate and small size grains, such as wheat and rice with water content that meet national standards. The mill has following features:

1. It can pulverize various grains with high efficiency and high speed. The sample grains are pulverized by means of high speed mill hammers (16800 r/min) into fine and uniform powder which enter into a stainless steel collector through a screening plate and then is fabricated into a sample powder.
2. On the inner wall of the tank there stacked with a layer of domestically advanced sound absorbing material which makes noise to be lower than that of the same domestic and abroad products.
3. There is an embedded temperature protector within the motor. Once the temperature of motor exceeds a set temperature limit, it would automatically stop running and start again when the temperature decreases to the normal value below the limit.
4. The high speed air flow produced during pulverizing sample grains has a self cleaning effect. Therefore, no manual cleaning the mill cylinder is required generally during the interval between sample pulverizing operations.
5. After going through sieves with different screening hole sizes, the pulverized sample powder is suitable for samples’ preparation and measurement and analysis of their various indexes, such as wheat gluten quantity and quality, falling number, near infrared compositions, grain viscosity and other fineness requirements etc..
6. For large grain samples of irregular form (such as maize grains), a preliminary pulverizing by means of laboratory pulverizing mill or direct feeding pulverizing is required.
7. The high speed air flow produced during hammer pulverizing could result in loss of water content in sample grains. Normally, a sample grains that contain 10 – 20% water would loss 5 – 10% water content during the pulverizing process.

2. Technical Specification of Hammer Type Whirlwind Mill                              

   Voltage of Power Supply               AC 220 ± 10 V, 50 Hz

   Output Power of Motor                 750 W

   Diameter of Working Chamber           110 mm

   Rotational Speed of Mill Hammer       16800 r/min

   Hole Diameter of Screening Plate      0.5, 0.8, 1.5 mm

   External Sizes                        530´530´650 mm

   Weight of Whole Machine               51 kg

3. Packing List                                                                          

When unpacking the box, please check the box content against the packing list.

  Description                                 Quantity

3.1 Main Machine of Whirlwind Mill             one (major article)

3.2 Stainless Steel Collector                  one set (accessory)

3.3 Transparent sample feed hopper             one (accessory)

3.4 Filter bag                                 one (accessory)

3.5 Power Supply Cord of 2 m length            one (accessory)

3.6 Automatic feeding device                   one set (optional spare)

3.7 Driving belt                               one (spare)

3.8 Stainless Steel Screening Plate with Æ0.5 and Æ1.5 holes

                                               one for each (spares)

3.9 Sealing O-ring of Æ19´2.65 mm             one (spare)

3.10 M6´10 Socket head cap screws              two (spares)

3.11 M6 Socket Head Spanner                    one (spare)

3.12 25 mm sweeping brush                      one (spare)

3.13 Quality Certificate of Product            one copy(spare)

3.14 Operation Manual of JXFM110 Hammer Type Whirlwind Mill 

                                               one copy(spare)

4. Installation Guide of Hammer Type Whirlwind Mill                                  

      After unpacking, check various accessories and spares against the packing list and the accessories must be mounted on the main machine.

4.1 Place the main machine of hammer type whirlwind mill on a flat and sound

work stand surface.

4.2 Carefully read the operation manual and the operation precautions

printed on both sides of the whirlwind mill.

4.3 Take stainless steel collector (14) and unscrew the fixing screw (12) on the upper side of  discharge pipe on right side of main machine. Insert the feed pipe on upper part of the collector into discharge pipe (13), fasten the screws after adjustment of collector angle. Put the air filter bag (11) around the big pipe on upper part of the collector.

4.4 Open the front door (7), loosen the circular connecting nut (3) on the upper of rubber sealing sleeve which locates on the upper part of mill cylinder and butterfly nuts at right side (16). Open the front cover (6) of mill cylinder and check if the mill hammer is loose. Then pull

    and hold outer side of blades of mill hammer with left hand and fasten M16 stainless steel   nut on the center shaft clockwise by means of a spanner with right hand. Check the size of screening plate (a screening plate with hole size Æ0.8mm is mounted when delivered). Close the front cap (6) of mill cylinder and fasten butterfly nut (16) and circular nuts (3), then close the front door (7).

4.5 Check if the voltage of power supply meets requirement and then connect the plug with power supply socket.

4.6 Check if the rotational direction of mill hammer is in coincidence with that pointed out by arrow on the front cover of mill cylinder (counter clockwise).

4.7 Pull down the spring clamp (15) of the collector with left hand and take out the sample cup on lower part of stainless steel collector with right hand. Then pour out the foreign object in the cup and lightly rotate it several times leftwards and rightwards after replacing it back to prevent leakage.

4.8 Install the transparent feed hopper into feeding head (10) and press it soundly. Totally open adjustment plate (2) of stainless steel throttle valve.

4.9 Press the green start button (8) on lower left side. For the first time application, let the motor running idly for 2 to 3 minutes.

4.10 Press the red stop button (9) to stop the machine.

1. Feed Hopper;                                2. Throttle Adjustment Plate;

3. Connecting Nut;                             4. Connecting Sealing O-ring;

5. Fixing Screw of Screening Plate;             6. Front cover of Mill Cylinder;

7. Front Door;                                 8. Start Button;

9. Stop Button;                                10. Feeding head;

11. Filter bag;                                12. Fix screw;

13. Connecting Sleeve of Discharge Pipe;       14. Collector;

15. String Clamp;                              16. Butterfly Nut;

5. Operational Guide of Hammer Type Whirlwind Mill                               

5.1 Before operation of hammer type whirlwind mill, it should be confirmed that the operation voltage is AC 220 ± 10 V with frequency 50 Hz. The current capacity of power supply socket should be equal to or greater than 10 A.

5.2 Before putting sample grains into feed hopper, it should be confirmed that there is no small metal pieces or other hard object within the sample grains.

5.3 The hammer type whirlwind mill should be placed on clean, dry, well ventilating, level and sound stand to ensure normal running of the equipment.

5.4 After connecting to power supply, the start button should be pressed only after having adjusted the throttle valve on feeding head to the maximum position. After normal operation of the whirlwind mill, pour the sample grain into feed hopper and then adjust the throttle valve to let the sample grain gradually enter into mill cylinder. The entering speed of grain should not be too fast, to avoid the blocking operation.

5.5 After having pulverized the sample grain, let the mill operate with time delayed for 40 to 60 seconds to clean the mill cylinder automatically, and then press the red stop button to stop the mill.

5.6 The quantity of pulverized sample grain for each time is 200 to 300 g.

5.7 The feed speed could be adjusted by the adjustment plate of throttle valve on the feeding head. The feed speed depends on water content within the sample grain. The greater the water content in the sample grain is, the slower the feed speed should be. For 300 g of wheat grain with standard water content, the normal pulverizing time is about 90 seconds. If there

    is abnormal sound from the motor, it means the feed speed is too high.

5.8 For sample grain with high water content, the feed speed should be very low. Otherwise, the dough would be burnt due to high temperature within mill cylinder. If this phenomena has happened, the mill cylinder and whole powder discharge duct should be cleaned immediay.

5.9 If an automatic feeding device is used, the feed quantity of sample grain could be adjusted by the speed regulator, so that the necessity of controlling feed quantity of sample grain by means of manual adjustment of throttle valve could be totally excluded.

5.10 After finishing pulverizing of sample grain, the upper part of collector must be beaten several times with a small wood stick. Then take out the sample grain cup and screening and weighing as required.

5.11 If falling number or the index in relation to water content is measured, the weight measured by means of scale must be corrected to that at the standard water content.

6. Description of Circumstances where the Hammer Whirlwind Mill is not Applicable    

6.1 The hammer type whirlwind mill is not suitable to be applied to pulverize sample grains with high water content, high viscosity, high oil content and high cellulose. Otherwise, not only the pulverizing effect would be not satisfactory, but also the machine would possibly be damaged and even motor could be burnt out.

6.2 A single phase capacitor started motor is used on the hammer type whirlwind mill and its output power is 750 W. It cannot be used to start with load and for long time full load running. Otherwise, the temperature within mill cylinder would rise rapidly, or the motor would be damaged due to overloading.

6.3 The hammer type whirlwind mill is not applicable to pulverize the sample grains with high hardness, large size or irregular form. If such sample grains must be pulverized with the whirlwind mill, they should be first processed by preliminary pulverizing and then pulverized by the whirlwind mill.

7. Trouble Shooting of Common Failures, Service and Maintenance of Hammer Whirlwind Mill      

7.1 Cleaning

      If abnormal sound or low powder output efficiency (powder output lasts for long time) is heard or observed during the application process, it means that the machine should be stopped for cleaning. The cleaning should be done as following:

1. Disconnect power supply and take away the sample cup. Loosen the fix screw (12) on the connecting sleeve (13) of discharge pipe, and then turn the collector 90 degree forward. Wipe and clean internal chamber of collector;
2. Remove the collector and poke and stir the discharge duct with a small stick;
3. Remove filter bag and clean it;
4. Adjust proper tension of driving belt as described in section 7.4;
5. If the whirlwind mill is continuously used for a long period, it should be cleaned everyday.

7.2 Replacement of Screening Plate

1. Disconnect power supply and open the front cover (6) of mill cylinder as described in section 4.4;
2. Unscrew both M4 nuts (5) on left and right of external side on fix pressing plates of the screening plate;
3. Loosen both M4 screws on left and right from inner side with a screw driver;
4. Pull out original screening plate and insert new screening plate;
5. The procedure of locking up pressing plate is just opposite to the steps mentioned above for removing.

7.3 Replacement of Mill Hammer

      If the mill hammer is worn out seriously or deformed under the effect of a force, it should be replaced according to following procedure:

1. Buy a new mill hammer by mail;
2. Disconnect power supply and open the front cover (6) of mill cylinder as described in section 4.4;
3. Then pull and hold outer side of blades of mill hammer with left hand and unscrew M16 stainless steel hexagon nut on the center shaft counter clockwise with right hand;
4. Remove the nut and mount a new mill hammer, then fasten as described in section 4.4;
5. When mounting the new mill hammer, it is prohibited to beat on new mill hammer. Otherwise, it could result in deformation of mill hammer and effect the quality.

7.4 Locking up and Replacement of Driving Belt

      After long term operation of hammer type whirlwind mill, the driving belt would definiy elongate and be worn out, resulting in slipping of belt or low working efficiency. At this time, it is necessary to adjust belt tension or to replace the driving belt as following:

1. Disconnect power supply and unscrew 6 M5 screws on the back sealing plate, remove the back sealing plate;
2. Adjust both upper and lower nuts of bolts fixing the motor to make the driving belt tensioned tightly;
3. When replacing driving belt, first unscrew bolts fixing motor and lift the motor on one side. Replace the driving belt between the pulley of motor and spindle of mill cylinder, and then re-tension the new belt.
4. Mount the back sealing plate.

7.5 Start failure

1. Disconnect power supply;
2. Tip the whole machine 90 degree from front backwards;
3. Remove 4 M5 screws on cover of electric box on base surface, and remove the contactors of heat relay from the cover;
4. Press the reset switch of heat protector;
5. Mount the cover of electric box in procedure opposite to that steps mentioned above and start again.

7.6 Tripping of internal heat protector within motor due to overheating of

the motor

      Wait for some time and restart the motor after it is cooled down.

7.7 Burning out of Motor due to Overloading

      Remove the motor and send it to the Company for repair.

8. Three Guarantees Services Provided to You (domestic customers only)                

8.1 Period of three guarantees service

1. If the machine part (non-vulnerable part) damages during normal use in accordance to this manual and these damages or failures are really caused by defects in manufacturing or quality that does not meet the required technical specification within one year from the buying date of customer, the Company has responsibility of three guarantees, i.e. of repair, exchange and returning back of defect product for replacement free of charge with the copy of buying invoice as the evidence;
2. The customers of the Company’s products enjoy repair and service in the whole life of the products;

8.2 Establishment of customer archives

When you have bought the equipment, please fill out following archives card as required and send it back to development department of the Company to facilitate maintaining contact to and providing technical service to you.

Customer Archives Card of JXFM110 Hammer Type Whirlwind Mill