Summary of Contents for DALIN DLVC
- Page 1 DLVC Installation,Operatio and Maintenance of VC Clutches HENAN DALIN RUBBER AND TELECOMMUNICATIONS APPARATUS CO.,LTD Mobile/Whatsapp: 0086 18588455677 tracy.du@hndl.net.cn...
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Page 2: Table Of Contents
Table of Contents INTRODUCTION ..............2 Description . - Page 3 Table of Contents ORDERING INFORMATION/ TECHNICAL ASSISTANCE ........22 Equipment Reference .
- Page 4 VC GRINDING MILL CLUTCHES Figure 1 : Component Parts for Dalin Type VC Element Mobile/Whatsapp: 0086 18588455677 tracy.du@hndl.net.cn...
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Page 5: Introduction
1.1.4 Where diameter space is limited, or the torque required is greater than a single element can transmit, all sizes of Dalin VC elements can be supplied as Denotes the most serious hazard, and is used dual units. when serious injury or death WILL result from... -
Page 6: Clutch Adjustment
Figure 2 Clutch Adjustment 1.3.2 To achieve the desired mill acceleration tim control valve is installed in the clutch air supply line 1.3.1 clutches are completely self-adjusting and and adjusted to restrict air to the clutch, while automatically compensate for lining and drum wear. allowing free ow away from the clutch for rapid disen- Lubrication is not required. -
Page 7: Installation
Inflation of the element without a drum in place will result in permanent dam- age to the element components. Mounting Arrangements Dalin VC grinding mill clutch applications are avail- 2.1.1 able in single-narrow, single-wide, dual-narrow and dual-wide mounting configurations. See Figure 4. The... - Page 8 TABLE 1 FASTENER ASSEMBLY TORQUE SN = SINGLE NARROW SW = SINGLE WIDE DN = DUAL NARROW DW = DUAL WIDE L = LUBED TORQUE - FT.LB. (Nm) (30 WT. MOTOR OIL OR ANTI-SEIZE) D = DRY TORQUE - FT.LB. (Nm) ELEMENT TO SPIDER/SIDE SIZE TORQUE...
- Page 9 TABLE 1 FASTENER ASSEMBLY TORQUE SN = SINGLE NARROW SW = SINGLE WIDE DN = DUAL NARROW DW = DUAL WIDE L = LUBED TORQUE - FT.LB. (Nm) (30 WT. MOTOR OIL OR ANTI-SEIZE) D = DRY TORQUE - FT.LB. (Nm) ELEMENT TO SPIDER/SIDE SIZE TORQUE...
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Page 10: Mounting Spider And Drum Hub
Mounting Spider and Drum Hub 2.3.4 Slide the heated drum hub or spider onto the shaft. Hold in position and allow to cool. 2.3.1 The spider and drum hub are bored for a press fit onto Shaft Alignment their respective shafts. The interference is approxi- mately 0.0005 inch per inch (0.0005 mm/mm) of shaft Parallel Alignment Tolerance diameter. -
Page 11: Axial Locking Device Adjustment
Angular Alignment Tolerance (Gap): 2.4.6 Shim and shift the base of the movable shaft to correct the misalignment. After tightening the base, recheck Not to exceed 0.0005 inch per inch (0.0005 mm/ the alignment and correct if necessary. Make sure to mm) diameter at which readings are taken (“D”... -
Page 12: Installation Of Element And Drum (Narrow, Dual Narrow And Single Wide)
2.5.3.7 Slide the housing back over the bearing and install the snap ring. 2.5.3.8 Secure and tighten the bearing housing to the adapter plate using four hex head screws and lockwashers. Tighten the screws to 35 ft.lb. (47Nm). 2.5.3.9 After completing assembly, lubricate both bearings with No. -
Page 13: Installation Of Element And Drums (Dual Wide)
2.7.8 Reassemble the air connection tubes. If an elbow has the appropriate fasteners. See Table 1. Make sure the been removed, use a good quality pipe sealant on the element fully engages the register in the spider. threads. See Figure 8. Note : The elbow assemblies on the outboard element 2.6.7 Attach the axial locking device (if required) mounting... - Page 14 TABLE 3 AIR CONNECTIONS FOR VC ELEMENTS SIZE AIR TUBE WASHER AIR TUBE WASHER 11.5VC500 201402 72 x 15 412178-02 412324-01 14VC500 201302 72 x 11 412178-03 412324-02 16VC600 201302 72 x 11 412178-03 412324-02 20VC600 201302 72 x 11 412178-03 412324-02 24VC650...
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Page 15: Air Control System
Rigid piping will result in excessive loads on the rotorseal bearings, shortening life. Electrical Controls The basic Dalin grinding mill clutch control is shown 2.9.1 on Figure 10. This control provides run, inch and timed inch features only. Timed inch creates a delay... - Page 16 Standard Air Tank Group Pressure Switch Set at min p.s.i. 1.5 to 5 and interlock with Flow control valve 1/2, 3/4 & 1-1/2 NP motor starter so motor cannot be started with Bushing Clutch clutch engaged. Use normally closed contacts. Pressure Gauge Pipe Nipple Pipe Elbow...
- Page 17 Figure 10 : WIRING DIAGRAM FOR GRINDING MILL CONTROL PANEL REFERENCE : LA- 9811...
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Page 18: Torque, Rpm And Pressure Limits
TABLE 5 MAXIMUM SAFE OPERATING SPEEDS Size Maximum Size Maximum Maximum Maximum Size (Wide) Size (Wide) (Narrow) (Narrow) 11.5VC500 1800 28VC650 1000 14VC1000 1800 42VC1200 14VC500 1500 33VC650 16VC1000 1400 46VC1200 16VC600 1400 35VC650 20VC1000 1300 52VC1200 20VC600 1200 37VC650 24VC1000 1250 51VC1600... - Page 19 (11) to supply a pressure rate of approxi- The non-asbestos friction material used on mately 20 psig/sec. (1.4 bar/sec.). Due to the non-lin- Dalin VC clutches may not develop rated earity of the pressure-time curve (See Figure 11), it torque initially, as a short “wear-in” period is will be easier to use a reduced value to set the flow required.
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Page 20: Maintenance
4.0 MAINTENANCE Operation with friction material worn to less than minimum allowable thickness will result Only qualified personnel should maintain and in damage to the drum. repair these units. Faulty workmanship may Note : A wear indicating groove (See Figure 12) is result in personal injury or equipment dam- provided on each end of the friction block. -
Page 21: Operation
TABLE 7 Operation of the clutch on a drum that has Drum Wear Limits worn, or has been machined, to less that min- imum allowable diameter will result in dam- NARROW SERIES age to the element components. Max. Allowable wear on Element Size Drum Diameter* inch 4.1.2.2 Air Actuating Tube - Check that the tube has not... -
Page 22: Removal Of Element Assembly And Drum (Narrow, Dual Narrow And Single Wide)
4.1.2.9 Excessive Dust Accumulation - If dust becomes 4.3.4 Disconnect the axial locking device (if used) from the packed in the backing plate cavities, a pressurized spider and separate the shafts as far as the bearings enclosure should be considered. Excessive accumula- will allow. -
Page 23: Friction Lining Replacement
Figure 13 4.6.1 Make sure the torque bars and release springs have been removed from the backing plates. Whenever the element is removed and disas- 4.6.2 For riveted friction shoe assemblies, drill the rivets sembled, it is always good practice to replace with a 15/64 inch (6 mm) drill and tap the rivet body the release springs. -
Page 24: Assembly Of The Element
4.7.9 Note the orientation of the air connections and install the through bolts and locknuts where applicable. 4.7.10 Re-install the elbows using a good quality sealant on the pipe threads. Install the air connections on single narrow, dual narrow and single wide elements. Install only the short air connections (element closest to spi- der) on dual wide elements. - Page 25 6.0 ORDERING INFORMATION/ TECHNICAL ASSISTANCE Equipment Reference 6.1.1 If possible locate the assembly drawing(s) and bill of material to insure the correct spare parts are used.
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