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Vigna e grappoli

Preventing fires during pruning drying with nozzles

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INDUSTRY
Food and beverage industry
APPLICATION
Fire protection
INDUSTRY

Food and beverage industry

APPLICATION

Fire protection

PROBLEM

Prevent self-ignition

SOLUTION

Manifolds system and full cone nozzles

Vine shoots’ transformation

A winemaking equipment manufacturer solves the problem of self-combustion.

Vendemmia in vigna

The industry

From November to February, the pruning of vine plants produces considerable quantities of wood residues – long and mostly thin branches – called “vine shoots.”

Although they may seem worthless materials, there has been a progressive technological advance in recent years for recovering and enhancing this production waste. The vine shoots can be transformed into pellets in a righteous path of differentiation of energy resources.

The stages of vine shoot processing and transformation

Pellets are mainly obtained from the pruning of the vines. The process begins in the vineyards, where waste is collected and then passed through dryers and compactors.

1 | HARVEST
The vine shoots are collected from the ground by unique shredders that separate the wood chips from grass and leaves;

2 | DRYING
The drying phase can occur naturally in about two months or by special machinery capable of significantly reducing processing times;

3 | FRAGMENTATION
Once dried, the material is transformed into fine sawdust, which will then be converted into pellets;

4 | TRANSFORMATION INTO PELLETS
The sawdust – without other binders – is compressed into pellets in special mills that work between 40 and 80 ° C.

The problem

The customer who turned to PNR Italia is a manufacturer of wine-making equipment. The need was to prevent possible self-combustion fires on a belt that conducts the vine shoots in a dryer.

The dryer reaches an operating temperature between 100 and 120 ° C.

The conveyor belt is 11m long and 3m wide, and the pressure of the customer’s system is about 3.5 bar.

Although they may seem worthless materials, there has been a progressive technological advance in recent years in recovering and enhancing these production wastes.

Vigna e grappoli

The solution

The PNR Italia technical department designed a two-manifold system as long as the conveyor belt was placed 70 cm above the belt.

Each manifold is equipped with ten full cone spiral E nozzles for 20 nozzles throughout the system.

Each nozzle is placed 1.10m from the other, except for the two at the ends of the manifold, which are located 55cm, respectively, from the beginning and end of the manifold.

Illustrazione per studio di copertura

CONVEYOR BELT
ISOMETRIC VIEW

1 | MANIFOLDS WITH EBU NOZZLES
2 | CONVEYOR BELT
3 | DRYER

Studio di copertura

CONVEYOR BELT COVERAGE STUDY
FRONTAL VIEW | PLAN | SECTION

Advantages

EBU nozzles ensure optimal coverage of the area in case of fire.

Prodotto E

E

FULL CONE NOZZLES

The E-type full cone nozzle works on the impact principle. It deflects a water stream that impacts onto a spiral-profiled surface, providing the desired spray angle.
Their unique design makes them virtually clog-free and produces a broader spray coverage than other nozzles for a given flow and pressure.

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