GB1164925A - Liquid-Cooled Processing Vessel. - Google Patents

Abstract

1,164,925. Finishing. J. F. RAMPE. 20 July, 1967 [25 Aug., 1966], No. 33437/67. Heading B3D. [Also in Division B2] A liquid-cooled processing vessel, for use in rod, ball and pebble mills, orbital finishing machines and the like, comprises a body portion and end portions, a shield of abrasion-resistant material loosely lining the vessel and means for introducing a cooling liquid to and directing it through a space between the shield and the vessel. An orbital finishing machine has an opentopped tub 1 comprising a generally cylindrical steel shell 2 with vertical flanges 2a. A flat steel end piece 3 is welded to one end of the shell. Welded to the other end of the shell is a steel end piece 4 having a discharge opening 4a, a door 5 and a discharge shoot 6. At the bottom of the tub is a drain assembly 7. A steel cradle 8 welded to the tub comprises steadying pieces 8a, one or more longitudinal members 8b and two longitudinal angles 8c. The latter are welded to uprights 9 connected through rubber-in-shear mounting assemblies 11 to stationary uprights 10. Eccentric shafting 12 is driven by a pulley 13 to impart vibration. A shield 16, consisting of a backing 17 of 16-gauge impact and abrasion resistant sheet steel to which is permanently bonded a thick layer 18 of high performance rubber, is a loose fit in the shell 2 and is of undulating shape, resulting in spaces 19 between it and the shell 2. The top portions of the shield 16 are clamped to the shell by two longitudinal strips 22 secured by bolts 23 and nuts 24. On each of the two opposite sides of the shell 2 a series of mounting pieces 26 is welded to the outer surface of the shell, each piece receiving the threaded hollow stem of an elbow fitting 27. A conduit serving as a common source of cooling water communicates with inlets 28 in the fittings 27. The water passes through openings 29 in the shell into the spaces 19. At one end is a shield 30, consisting of a metal backing sheet 31 to which is bonded a layer 32 of rubber, and having vertical ridges 33 behind which are vertical spaces acting as water courses. Spacers 34 are located between the shield and the end piece 3; bolts 35 passing through the top spacer hold the shield 30 in place so that it can hang more or less loosely. Cooling water entering through mounting pieces 38 and fittings 39 tends to fill voids 37 behind the shield 30 which act as headers. At the bottom of the tub the shield 16 has a group of small openings 40 overlying a large drain opening immediately above the drain assembly 7, so that any water entering through the end piece 3 which finds its way into the shield 16 can escape. Metal shields without rubber linings may be used. The ridges may extend parallel to the major axis of the tub, annular headers being provided at the ends of the vessel.