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Grizzly Feeders

Grizzly Feeders

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Grizzly Feeders

Advanced technology and finest quality raw materials are used in the making of Grizzly Feeders. Robust in construction, these are utilized to adjust the consumption of the cone/ jaw crusher, which enables hassle-free operation of the crusher with high rate of production. They are manufactured according to the client's requirements and needs. This Grizzly Feeders are easy to operate with optimum performance and takes low maintenance. The offered machines are cost effective and perform well.

Basic Data you will require

Type of material being fed, its angle of repose and weight per cubic foot (kg/ m.cu). A rough calculation of the material sizes. The greatest dimension of the biggest piece. Needed feeder conveying distance. Ideal feeder capacity.

  • STEP 1: Utilizing the computed percentage of big size material, select the ideal width of feeder from Table A. Multiply this factor by the greatest dimension of the material's largest piece to determine minimal width of feeder width. There is also a throat opening factors where the use of a four-sided hopper is done. Proper factors are selected and multiplied by the same largest dimension to find minimal hopper throat opening.
  • STEP 2: Determine the different combinations of feeder slopes and widths available for the needed capacity. Neglect any which are tinier in width than the minimum feeder width calculated before. It may become necessary to enhance the minimum width of the feeder in order to gain the desired capacity. If so, ignore minimum width from previous step and substitute with the altered minimum feeder width for the needed capacity.
  • STEP 3: Now regard feeder length. Generally the positioning and size of companion equipment like conveyors, crushers, hoppers, aprons, chutes, etc. propose the given to minimized length of the feeder pan. Also, the pan could not be shorter than that which is required to hold the material at its repose angle on the pan after the shutting down of the feeder. Find out minimum pan lengthand make your own scaled diagram to demonstrate the angle of repose and slope of feeder on the rest and pan. Enable the throat opening of the proper hopper when utilizing a hopper with four sides. Add 12" (30 cm) to the length of the pan as a factor of safety to forestall the material from continuing to freely flowing. After this, add the length of any grizzly sections which is needed to the minimum pan length to ascertain the minimum feeder length.
  • STEP 4: Again evaluate slopes, width and capacities. Regard headroom and feeder length needs. Match these with location, critical dimensions and elevations of associated equipment. Recollect to allow for future demand of increase in capacity. Now select the slope/ width combination which matches the desired capacity and which is ideal for the particular installation and application. You would need to go steeper and narrower to match up with a crusher opening; possibly wider to have feed from an active apron conveyor. Or, you may need to go wider with comparatively less slopes to suit the limits of elevation. You are possiblly to discover that although over one size feeder will fulfil your capacity needs, one specific width/ length/ slope combination optimally serves your predefined needs.

Firsthand grizzly feeders, Straight-line motion by VGF Series. For regulated feeding of primary crushers after screening of quarry fines.

VGC Series Primary vibrating feeders mix run-of-quarry scalping and feeding oversize retained by grizzly bars to crusher. Fines passing the bars of steel spacing such as crusher jaw setting, could be directly sent to screening.

Advantages

  • Max. capacity working of the Crusher with low depreciation since the chamber for crushing is not filled with materials of undersize.
  • Grizzly fines, released by belt conveyor, crushed prod, safeguard the rubber belt from shearing and attrition owing to the discharge of product from primary crusher.

Table A-Section Factors

Percentage Large Size*

Feeder with Factor

Hopper throat Factor

1-10%

1.3

1.5

10-40%

1.5

2

40-60%

2

2.5

60-90%

2.5

3

90-100%

3

3.5

*Those pieces which have a size range of 75 to 100% of the greatest piece. If the largest piece is 91cm (36") then "largesize" are all pieces 69 cm (27") and larger.

Capabilities founded on material weighing 1600 kg/m.cu. (100 Ib./ft.cu), 30 cm(12") material bed depth and 13 mm (1/2") stroke at the rate of 800 RPM.

Slope of Pan

Feeder Width in mm/tons per House

800

900

1100

1200

1400

1500

1800

2000

2500

0 DEG

275

350

400

475

525

600

725

850

1000

5 DEG

375

450

525

600

675

750

900

1050

1160

10 DEG

450

550

650

725

825

900

1075

1250

1440

15DEG

550

650

750

850

975

1075

1300

1500

1850

Size

VGF 800

VGF 900

VGF 1100

VGF 1200

VGF 1400

VGF 1500

VGF 1800

VGF 2000

VGF 2500

Size of

800

900

1100

1200

1400

1500

1800

2000

2500

feed










deck










width










Grizzly

1600

1700

1800

2000

2400

2500

2600

3000

3200

length










Total

2800

3000

3300

3600

4200

4400

4600

5600

6600

length










Grizzly

50/

50/

50/

507

507

507

507

507

507

bars-

150

180

200

200

250

250

300

350

400

openings










Max. feed

500

600

700

800

1000

1100

1200

1400

1600

size mm










Max.

250

350

400

480

640

750

1040

1200

1400

capacity










TPH










Horse

15

20

25

30

30

40

50

75

100

power










Wt.

3500

4200

5200

6500

8800

9800

12200

14600

16200

Kgs.










Features

  • Large welded frame to tolerate high shock loads.
  • Transportation deck with grizzly and pan combination, back and side renewable liners.
  • Stepped grizzly and non-plugging, singly renewable, for easy fines passing and material tilting.
  • Vibrating unit comprises two counter-rotating eccentric shafts, geared jointly in oil-bath. Special roller bearings protected by grease labyrinths and in oil-bath.
  • Varying imbalance of the machine effects the setting of amplitude.
  • Actuation is by V-belts drive and 4-pole motor.
  • Special steel springs ordered for the installation on steel supporting structure or concrete.
  • Welded plate supporting structure (supplied on request), steel-sections preset and cross-breams for fines and feed discharge hopper application. It is possible to insert a device for uninterrupted output setting.

Mode

A

B

C

D

E

F

G

VGF 800

2800

800

1950

535

730

1290

1180

VGF 900

3000

900

2200

560

780

1350

1300

VGF 1000

3300

1100

2400

590

800

1400

1450

VGF 1200

3600

1200

2510

590

875

1460

1620

VGF 1400

4200

1400

2935

675

1000

1640

1800

VGF 1500

4400

1500

3100

700

1020

1720

2100

VGF 1800

4600

1800

3180

790

1190

1880

2275

VGF 2000

5600

2000

3500

900

1200

2000

2400

VGF 2500

6600

2500

4100

1100

1500

2200

2600