- Energy Saving – due to the recirculation of the air flows, aimed to optimize heat recovery, and to the ventilation that is controlled and channeled in a highly efficient way, the heat exposure of the pieces to be dried is increased making the best use of the heat and air in the system
- Space Saving – thanks to the vertical movement of the trays in the dryer, the machine footprint is reduced to a minimum, even in case of very long drying times
- Drying Environment With Filtered Air and Controlled Ventilation – it is designed to guarantee the final quality of the cured work-pieces. Air temperature and air speed in various zones are set according to the parameters of drying required. The air flows are channeled appropriately to create ventilation tangent to the surface of the pieces. The air in the system is pre-filtered
Vertical dryer with belt trays
The Contivert Dryer with belt trays has all the advantages of a linear dryer, while requiring only a minimum of space and energy. Belt trays arranged one on top of the other ensure controlled air flow, with both its speed and temperature adapted to the drying cycle and the finishing material used
The machine’s operating sequence:
The conveyor belt is set in motion as soon as a belt pallet coming up from below has reached the loading and unloading level and a batch of freshly lacquered work-pieces has been identified by the photocell. After the loading of a new batch and the unloading of the dried work-pieces have been completed, the following movements are carried out simultaneously in the Convert:
- The belt tray which has just been loaded moves up by one cycle in only 2,5 seconds (1 cycle=1 rack stage)
- The next belt tray starts moving up and reaches the loading and unloading position
- The belt tray on the top starts moving in the next cabin
- The belt tray at the bottom starts moving in the previous cabin
The model of the Contivert, the number of the belt trays and the overall height of the dryer are determined by:
- The output of the upstream lacquering unit (coating and automatic spraying machine)
- The drying cycle specified by the lacquer manufacturer
The maximum work-piece thickness in the contivert depends on the distance between trays
The thickness of the workpieces to be dried determines the distance between the belt pallets (rack clearance) and therefore as a consequence the number of the belt pallets possible in the relevant Contivert model of a certain height. A sufficient distance between the belt pallets is essential to ensure correct air circulation over the work-pieces and therefore effective drying
- Max thickness : 60 – 90 – 150 mm
- Distance (rack clearance) : 90 – 120 – 180 mm
The contivert design concept has the following models:
- Contivert ETC 2/2
Consisting of 2 cabins with belt pallets - Contivert ETC 3/2
Consisting of 2 cabins with belt pallets and 1 cabin for spacing
- Contivert ETC 4/2
Consisting of 2 cabins with belt pallets and 2 cabins for spacing - Contivert ETC 4/4
Consisting of 4 cabins with belt pallets
CONTIVERT ETC1
| Six daylight dryer CONTIVERT ETC1 mod. | |
|---|---|
| ETC1 - 5500 | |
| ETC1 - 6500 | |
| ETC1 - 7500 | |
CONTIVERT ETC 2/2
Belt dryer with belt pallets
The Contivert system (patented) is based on pallets equipped with conveyor belts. These belts pallets move mechanically – vertically and horizontally in cycle – through the Contivert unit, which is divided into a flash off zone, two temperature-controlled heating zones and a cooling zone, all with variably controlled air speeds. The air flow is restricted in the upward and downward direction by the belt pallets and to the sides by baffle plates
The flash off and cooling zones are located in the lower part of the unit. The air flow is blown into the cooling zone. During the cooling process, the air is heated by the workpieces and the belt pallets and then it is blown into the flash off zone, at the end of which another fan guides it out of the unit. The heating zones in the upper part of the unit work according to the recirculating air principle. Air is guided through the two heating zones at different temperatures
Vertical dryer with belt pallets
| VERTICAL DRYER CONTIVERT MOD. | | | | |
|---|---|---|---|---|
| No. of chambers | | | | |
| No. of zones | | | | |
| No. of trays | | | | |
| Tray clearance mm | | | | |
| Tray length mm | | | | |
Belt tray vertical dryer
It requires minimal time between loads, without any necessity of a load acceleration zone in the entrance area (the zone quite frequently required in dryers with bar pallets) The whole line is highly productive and space saving
Vertical dryer with bar trays
- The vertical dryer with fixed bar trays for the support of the workpieces is an economically viable version, that also satisfies the needs of long drying times in reduced space
- It keeps the same division into ventilation zones as in belt dryers
- The cyclic work of this dryer requires a waiting time between loads which is longer than that of a belt dryer, the time is however normally reduced thanks to an acceleration transport in the entrance area to the vertical
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