Alfa Laval Gunclean Toftejorg TZ-750, Инструкция по эксплуатации, Страница: 8 / 49

Page 6 Instruction Manual, Gunclean Toftejorg TZ-750 Fixed & Portable
Standard machines and machines delivered with ATEX certification
in accordance with Directive 94/9/EC
IM-TE91A400-EN7
General Description
The Gunclean Toftejorg TZ-750 is a media driven and media lubricated tank cleaning machine. As it is
self lubricating, there are no lubricating substances such as oil, grease etc. in the machine which need
to be regularly changed.
Functioning
The flow of the cleaning fluid into the machine passes through a turbine, which is set into rotation. The
turbine rotation is through a gearbox transformed into a combined horizontal rotation of the machine
body and a vertical rotation of the nozzles.
The combined motion of the machine body and the nozzles ensures a fully indexed tank cleaning
coverage. After 11¼ revolutions of the Hub with nozzles (10
3
/
4
revolutions of the machine body), one
coarse cleaning pattern is laid out on the tank surface. During the following rounds, this pattern is
repeated 3 times, each of which is displaced ¼ of the mesh in the pattern. After a total of 45 revolutions
of the Hub with nozzles (43 revolutions of the machine body), a complete cleaning pattern has been
laid out, and the first pattern is repeated.
1
st
cycle 2
nd
cycle 3
rd
cycle 4
th
cycle
The speed of rotation of the turbine depends on the flow rate through the machine. The higher the flow
rate is, the higher the speed of rotation will be. In order to control the RPM of the machine for a wide
range of flow rates, the efficiency of the turbine can be changed (50% - 100% - 0% Turbine/Inlet
guide).
Apart from the jet flow through the nozzles, fluid is leaking through the top of the machine, at the hub
and through the bottom cover. The leakages between the moving parts at the top and at the hub are
cleaning the gabs and thus preventing build-up of material that might cause extra friction. The flow
through the bottom cover is due to the fact that the machine is media lubricated, and that accordingly a
flow through the gearbox is needed.