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Tubular screw conveyor

  • Essai
  • Plan d'accès
tubular screw conveyor Palamatic Process

Tubular screw conveyor - Mechanical conveyor for powders

Logo test center Palamatic Process

Mild steel, stainless steel 304 and 316L
Flow rate up to 25 t./h. depending on diameter and motorization

Standard, flexible or easyclean screw
The tubular screw is intended to maintain continuous operation of the process. The easyclean version ensures fast and effective cleaning, while the flexible version can easily avoid obstacles in a restricted environment.

Our tubular screw conveyors are available in 2 or 3 versions:

  • Light duty (flours)
  • Medium duty (animal feed, cereals, flour)
  • Heavy duty (cement, lime, plaster, mining products)


  • Hygiene
  • Rate
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Equipment advantages

- Multi-output bottom

- Stainless steel 304L/316L design

- End bearing with shaft sealing group

- Modulate design


View our equipment in videos

Screw conveying

View our equipment in photos

Vis tubulaire Palamatic

Tubular screw conveyor

Tubular screw conveyor by Palamatic Process

tubular screw conveyor tank loading

Tubular screw conveyor tank loading

Continuous conveying of bulk or powdery products

mechanical conveying powder handling

Mechanical conveying - Tubular screw conveyor

Stainless steel manufacturing screw conveyor.

screw conveyor under industrial mixer

Screw conveyor under industrial mixer

Continuous operation of the system. 

mechanical conveying filling line

Mechanical conveying

Tubular screw for bulk materials and raw ingredients conveying.

mechanical conveying screw bulk handling solutions

Mechanical conveying

The extracting screw is implemented under hoppers and ensures the dosage of the bulk materials. It includes an extraction thread at the start of the turn and a conveying thread. The extraction thread is a tight thread.


mechanical conveying screw bulk handling solutions

Mechanical conveying

The tubular screw is used for extraction under a hopper.

tubular screw palamatic process

Palamatic Process tubular screw

During the conveying process, the screw only ensures the transfer. It has an identical pitch over its entire length which is equal to the diameter of the turn. The conveying thread is an elongated thread which prevents the bulk material from settling.

double screw under hopper

Double screw under hopper

Manufacturing of food flavours.

processing screw conveyor

Processing screw conveyor

Screening and mechanical conveying of cereals.

screw conveyor for silo feeding

Screw conveyor for silo feeding

Tubular conveying screw for loading cereals into silos.

bag dump station conveying screw

Bag dum station with conveying screw

Tubular screw conveyor for feeding powder storage tank.

screw conveyor under sifter

Screw conveyor under sifter

Tubular screw fed by a vibratory screener.

tubular screw conveyor under bag dump station

Tubular screw conveyor under bag dump station

Mechanical conveying of milk powder.

tubular screw conveyor palamatic process

Tubular screw conveyor Palamatic Process

Hatch on tubular conveying screw for screw flight inspection.

tubular screw under storage silo

Tubular screw under storage silo

Tubular screw under storage silo for raw materials: silica, clay, calcium carbonate, lithothamnium

tubular screw conveyor tank feeding

Tubular screw conveyor tank feeding

Tubular screw conveyor for feeding calcium carbonate storage tank.

tubular screw conveyor

Tubular screw conveyor

2 types of bearings: 

- Plated bearings for low pulverized bulk materials

- Offset bearings for powdery and abrasive products.

preparation tank feeding

Preparation tank feeding

The process consists of a big bag feeding system (gravity conveyor), three big bag discharging stations and a tubular screw conveyor.

tank feeding

Tank feeding with raw ingredients

Powder feeding of processing tanks from big bags and sacks via a tubular screw conveyor.

bulk powder pneumatic conveyor palamatic process

Bulk materials pneumatic conveying

Integrated equipment:

- Pneumatic conveying VFlow® 02

- Tubular screw conveyor

- Manual slide valve

- Flexible fitting

tubular screw flexible connector

Tuular screw flexible connector

The purpose of this tubular screw conveyor is to dose the sugar at the outlet of the silo for feeding the vacuum conveying
Mass flow rate: 5000 kg/h. on bulk materials of density 1.

tubular screw conveyor reactor feeding

Tubular screw conveyor reactor feeding

Discharge and pneumatic conveying of fluorinated derivatives.

flexible connector industrial process under tubular screw

Flexible connector industrial process under tubular screw

This tubular screw conveyor is used for mechanically conveying DICOA from the hopper outlet to the reactor.


Technical specification

Dimensions in mm : 


layout tubular screw bulk handling
Types 100 120 150 200 250 300 350 400 500
ØA 114 139 168 219 273 323 406 457 558
ØB 114 139 168 219 273 323 406 457 558
C Customized
ØD 114 139 168 219 273 323 406 457 558
E Customized
F 140 140 160 180 220 220 270 280 340
G 120 120 140 160 180 220 280 320 360
L Customized
P 114 114 124 124 124 124 151 151 162
T 280 280 280 355 410 465 535 590 740
V 265 265 265 315 365 435 485 540 655



Available options

  • Mechanical conveying
    Mechanical conveying

    Rotation controller

    To secure the process

Case studies
  • Processing line for biscuit production factory

    Processed powder: Crystal sugar - Line for biscuit factory - Food manufacturer that specializes in biscuits, chocolate and cocoa. The customer's process requirements involved the milling of granulated...
  • Brewery feeding line

    Processed powders: malt, barley and wheat powder - Brewery feeding line - The goal of the installation is to screen the cereals used in the beer production process.
  • Manufacture of food flavours

    Processed powder: maltodextrin with a bulk density of 500 kg/m³ - Manufacturing of food flavours - Company specialized in mushroom extraction - Maltodextrin is packed in 20 and 25 kg bags. The...
  • Ethanol production

    Processed powders: fluorinated derivatives: ammonium bifluoride, sodium fluoride, potassium fluoride, magnesia - Ethanol production - This customer is a specialist in the processing of oilseeds for...
  • Liquor manufacturing

    Processed powders: beet crystal sugar and cane sugar - Liquor manufacturing - French company specialized in the manufacture of spirits and syrups. The syrups are intended for CHR professionals and...
  • Rubber calendering line

    Processed powders: 2 references of carbon black (micro pearl) - Rubber calendering line - The facility includes 2 container discharge systems that supply 2 mixing lines with powdered carbon black.
  • Fertilizers - Urea

    Processed powder: urea Fertilizers - Urea Company based in Vietnam, leader in the production of fertilizing products.
  • Sludge liming

    Processed powder: Lime - Sludge liming - Manufacturer of dairy products - The project consists of adding lime at the outlet of the filter press for the treatment of water from the manufacturing...
  • Adblue - Urea- DeNOx

    Processed powders: solid urea, demined water and liquid urea - Adblue, Urea, Denox - Supplier of DeNOX solutions for thermal power plants to reduce nitrogen oxide emissions.
  • Cake mix

    Processed powders: modified starch, sodium bicarbonate, fat powder, whipping base, gelatin, milled sugar - Cake mix - Company based in Saudi Arabia that manufactures and distributes dry food materials...
  • Animal nutrition food supplements

    Processed powders: silica, clay, calcium carbonate, lithothamnium - Animal nutrition food supplements - This customer is a producer of specific mixtures of botanical extracts. In order to ensure its...
  • Loading of activated carbon

    Processed powders: activated carbon - Loading of activated carbon - Installation for the world's leading supplier of coal for energy purposes.
  • Truck and wagon loading

    Processed powder: adipic acid - Truck and wagon loading - The installation is especially designed to meet all the customer's constraints, in particular operation of the installation at a flow rate of...
  • Cementation of nuclear waste

    Processed powders: Cement + filler, lime and calcium nitrate - Cementation of nuclear waste - This process is intended for the cementation of fines and resins
  • Sugar packing

    Processed powder: white sugar - Sugar packing - The FlowMatic© 04 bulk bag filling station allows dust-tight packaging of all types of powders, limits dust emissions and automates the removal of the...
  • Packing of white sugar and crystal sugar in big bag

    Processed powders: white refined sugar, surfine caster sugar, crystal sugar - Packing in big bag of white sugar and crystal sugar - This big bag installation is designed to achieve a minimum flow rate...
  • Perlite conveying

    Processed powder: perlite - Perlite unloading, dosing and conveying - This mineral handling facility consists of an EasyFlow® 125 big bag deconditioning station.
  • Calcium carbonate loading

    Processed Materials: calcium carbonate, aluminum oxide, titanium dioxide, silica - Calcium carbonate loading into storage tank - For this project our client company is a specialist in the manufacture...
  • Pharmaceutical powder discharging process

    Processed material: sodium bicarbonate - Powder processes in pharmaceutical laboratories - Deconditioning of raw materials (sodium bicarbonate for pharmaceutical application) from big bags.
  • Tanker truck loading

    Processed product: plastic granules - Tanker truck loading - Container tipping equipment for the transfer of plastic granules into a tanker truck
  • Dissolution of urea

    Processed materials: liquid urea - Dissolution of urea - The 500m² facility consists of the production unit, polypropylene and HDPE storage tanks and storage of solid urea big bags.
  • Unloading big bags containing grains and cereals

    Process products: wheat bran, wheat flour, disinsected wheat bran - Unloading big bags containing grains and cereals - This big bag emptying station aims to feed insects (larvae and adults) with dry...
  • Entomoculture treatment unit

    Treated products: droppings, dead insects, live insects - Treatment unit in the entomoculture - This unit allows the treatment of non-compliant products from the main process.
  • Déconditionnement et alimentation de cuves de préparation

    Processed powders : Frying batter (flours, starches, spices, colourings...) - The installation concerns a pre-mixing line of ingredients for the food industry.
  • Weighing, conveying, dosing and transfer

    Products processed: snack cakes (starch, rice flour, oats) - Weighing, conveying, dosing and transfer - Extraction from big bags and sacks to feed a kneading tank.
  • Unloading and filling of manganese dioxide big bags

    Processed powder: lithium nickel potassium oxide - Unloading, filling of big bags and transfer of material - The objective of this installation is to protect the operators with equipment designed to...
  • Loading big bags of soda ash

    Treated powder : Natural soda ash - Automatic big bag filling line with buffer hoppers. Remote control system ensuring traceability and safety of the process.
  • Manufacturing process for sealants

    Processed powder : Sodium hypophosphite - Manufacture and installation of a new turnkey process line for the production of coatings and sealants in an ATEX hazardous location.
  • Process for feeding mixers

    Processed powders: potato flakes, semolina, salt, breadcrumbs - New workshop for the production of fillings - Unloading, transfer, storage, dosing.
  • Black mass treatment process

    Treated powder: black mass - Black mass treatment process - Process to unload the black mass from big bags, precisely dose and repulp it with water, without clogging reactions or dust emissions from...
  • Process for the production of chocolate

    Process materials: granulated Sugar, whey, skim milk powder, and various other minor additives - Process for the production of chocolate - Objectives: unloading, transfer, storage and dosing of...
  • High-rate big bag unloading system for the plastics and polymer industry

    Processed powders: PET resin granules and PET flakes - Fully automated big bag discharging line - Big bag compaction at the end of the line
  • Industrial Equipment for Feeding a Solvent Reactor - ATEX

    Treated powder: Titanium dioxide (TiO2) - Feeding of a solvent reactor in the inks and coatings sector - Emptying station for big bags and sacks with powder transfer system by a tubular screw.
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Big bag discharging - Telescopic tube - Easyflow EF1

Telescopic tube, Electric hoist loading, Forklift truck loading, low...

Easyclean tubular screw ECD

Quick cleaning, Continuous operation

Screw feeder - 4 models from D10 to D13

Weight or volumetric dosing system, 24 to 6 458 liters/h.

Lump breaker - 3 models

Crushing, Lump breaking, Granulating

Industrial mill - 4 models

Powders micronization
production line palamatic process

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