Pasteurizer tunnel for the jars or bottles with a total surface depending on the line capacity. The tunnel is usually divided in three sections – heating/holding; pre-cooling; cooling.
The treatment time is adjustable according to the production needs and jars size, by means of belt speed regulation through moto variator. Each sections have almost the same dimensions.
Conveyor belt: is manufactured by belt like intralox type. The belt is suitable to resistant to the process temperature and high pressure / weight load. Upper cover in AISI 304 stainless steel; hydraulic sealed proof stainless steel hood placed at the inlet of the tunnel complete with aspiration fan pulling and return axle in square tubular stainless steel Plastic diaphragm at the inlet and outlet of the tunnel Transmission by chain of 1” with protection cover.
Some additional characteristics of the tunnel are:
temperature control in the preheating and heating section which regulate the steam by a modulating valve
external hood, manufactured in AISI 304 stainless steel, for suction of the steam from the first section
upper covers of the tunnel, manufactured in AISI 304 stainless steel and designed at hydraulic seal proof
Tunnel divided in three sections :
first section – heating and holding section- by means of hot water, heated up to 98°C by means of stainless steel heat exchanger coil water/steam; water temperature can be widely adjust according to the production needs. The unit is completed by thermal regulator with its by pass group and instruments for temperature water indication. Hot water is sprayed by means of nozzles, placed on the upper side of the belt conveyor, and completely dismountable for an easy cleaning and maintenance.
second section – pre-cooling with water at about 60°C, coming from the last section. Water from this section will be discharged by an over flow and it can be recycled using a pump, into the cooling tower.
third section –final cooling – is provide with manifold for the cooling water distribution from the cooling tower, equipped with modulating valve. The water is collected in a chute, placed in the lower part of the tunnel section and pumped by a proper centrifugal pump into the pre-cooling section; the pump will suct the water from a lateral and external bin completed with level control and extractable stainless steel filter grid.