Two machines with the same throughput behave very differently depending on whether they can be pushed or whether they stand still. The TYG-100 is a mobile vacuum oil purifier with a flow rate of 6000 L/h, while the ZYD-100 is the fixed type with the same flow rate of 6000 L/h, an overall size of 1200×1400×1800 mm and a weight of about 720 kg. The same processing capacity in one case can be pushed up to each tank in turn, in the other it stays where it was installed and is connected to fixed pipework.
The first criterion: is the work position fixed
If the oil always arrives from one place and leaves to another, a machine installed at a fixed position with fixed connections is the simpler choice, because it saves the time of pushing it about and connecting it up again and again. If the oil is spread over several tanks and several sites, or if the machine has to move between them according to the maintenance plan, the mobile type is the one that earns its place. Making a fixed machine movable only makes the handling harder, and fixing a mobile machine in one spot throws away the only advantage it has.
The second criterion: how often and how long the work window is
Where the window is short, the site usually wants the machine to come when it is called rather than to be positioned days in advance. The mobile type saves waiting time here, and the price is that every set-up means connecting the pipework again and confirming the connections. The longer and more concentrated the window, the more the stability of the fixed type counts.
There is an energy account to be settled as well. A mobile machine is switched on when it is needed, whereas a fixed machine that keeps its heating running while it stands idle draws power continuously. The fact that an idle machine is still spending money becomes more significant when it is counted over a year.
The third criterion: ground conditions and the route to it
A machine on casters asks more of the floor. The floor has to be level, the route has to be wide enough to push it through and there has to be room to turn. The weight of about 720 kg and the size of 1200×1400×1800 mm of the ZYD-100 decide that its place in the building cannot be moved around casually. The cart type oil purifier of the JL series takes a different route entirely, with a filtration accuracy of 10~25 μm, aimed at short distance transfer and coarse filtration, and it does not carry out degassing.
The ambient conditions have to be looked at as well. The TYA series is specified for an ambient temperature of -20~45 °C, and altitude affects the vacuum level, so below that range the heating and vacuum capability has to be confirmed on site before the installation method is decided.
The features of the two kinds of site
| Feature of the site | More suitable installation | Main cost |
|---|---|---|
| One site, long continuous operation | Fixed feet | The pipework and the power connection have to be built |
| Several sites, moved on a plan | Caster wheels | The pipework has to be connected again at every set-up |
| Level floor, wide clear route | Caster wheels, more flexible | The time spent pushing and positioning |
| Uneven floor, narrow route | Fixed feet | The position cannot be adjusted once it is chosen |
| Unattended running overnight | Fixed feet | Monitoring and protection have to be fitted |
Once the installation method is chosen
The power supply, the route of the pipework and the draining arrangement all have to be confirmed with it. The mobile type is about the flexibility of set-up, the fixed type is about the stability of the run, and the conditions that go with them are not the same. Using a mobile machine as if it were fixed leaves the stability below what was expected, and using a fixed machine as if it were mobile means tearing up a foundation that has already been built.
Wheels and feet solve one thing only, whether the machine can appear where the work is; every other condition still has to be confirmed on its own.
