TABLE OF CONTENTS There are at least six types of batch and continuous tub vibrators: U cross-section, inverted keyhole section, half-U cross-section, single, dual, or overhead drives (Fig. 10-6). Batch equipment comes with or without dividers. Continuous machines may or may not have a means to control continuous process cycle time.
Round vibrators with no elevation in the chamber are of at least four types: with dividers, without dividers (discussed later), curved outer wall, (Fig. 10-16) or straight outer wall (Fig. 10-14). Round vibrators are available with or without a separation system.
Round vibrators with an elevation in the chamber (Fig. 10-16) and the big ratio designs have at least two additional variables: 1) type of separation deflector and its method of actuation, and 2) screen deck type and material.
Round continuous machines also have at least two additional variables: screen deck type and material, and a system, if any, for controlling continuous cycle time. The ratio is the diameter of the center section of a bowl divided by the channel diameter. Figure 10-16 shows a big ratio machine. Ratios greater than 4 are found in so-called "big" ratio machines.
Oval vibrators possess the variables associated with round vibrators with an elevation plus the potential additional variable of ratio of length to width. Figure 10-22 shows an oval high energy vibratory machine.
Portable tub machines can be used at the point of machining. Some of these allow...
