a machine for cleaning seed cotton gathered from the ground and bollies.
The USSR produces the model UPKh-1.5B cotton gin. It works in the following manner. The cotton enters an air separator through a pipe feeder and is fed to a toothed cylinder, where large-size trash, such as clumps of earth and stones, is removed. The cylinder pulls the cotton across a screen, removing small debris, and a suction valve draws the cotton into a hopper. Feed rollers deliver the cotton to a rubbing cylinder that forces small debris through a screen, and the cotton is thrown onto a hulling cylinder. When cleaning bollies, the rubbing cylinder breaks the shell, and the seed cotton that is extracted is fed to the shelling cylinder. The shelling and blade cylinders then feed the cotton to a saw cylinder. The cotton is taken from the saws by a brush cylinder and fed to the saw cylinder for an additional cleaning. It is then removed by the brush cylinder and ejected toward a kicker or fed to the brush cylinder again, from which it is unloaded by a suction valve and pneumatic conveyor along a tube into a trailer.
The UPKh-1.5B cotton gin is driven by a pulley or takeoff shaft from a tractor engine or by an electric motor. The machine can clean 1,500 kg of seed cotton (with approximately 10 percent contamination) per hour. Its productivity for hand-picked bollies (with no more than 20 percent humidity) is 1,500kg/hr; for machine-picked bollies the productivity is 700–800kg/hr. Five workers are needed to operate the gin.
M. SH. GODIK