Tubular screw conveyors

for the mechanical conveying of bulk materials

PAUL GROTH tubular screw conveyors for horizontal or ascending mechanical conveying of floury, granular and lumpy bulk materials.

With the appropriate design, tubular screw conveyors can also perform other tasks such as dosing, wetting, mixing and crushing.

Starting with our standard modular-system we adapt the tubular screw conveyor to the product properties, the installation option and other process requirements.

Tubular screw conveyors

Tubular screw conveyor
Basic design

  • Motor bracket with geared motor and flexible coupling
  • Tubular screw conveyors made of steel: outside painted and inside untreated, or hot-dip galvanised
  • Tubular screw conveyors made of stainless steel: bath pickled and outside glass-bead blasted
  • Screw thread made of highly wear-resistant steel too

 

Tubular screw conveyor sizes and technical data

Tubular screw conveyor   RS100 RS125 RS170 RS220 RS270 RS320 RS400
Jacket diameter mm 102 128 168 219 273 324 406
Thread diameter mm 87 110 150 200 250 300 380
Intended JACOB pipework Ø Ø mm 150 150 150/200 200/250 250/300 300/350 -
Capacity example depending on product properties and the intended processing
Grain 0.75 t/m³
Inclination 0°
Inclination 30°
Inclination 45°
Inclination 60°
t/h
t/h
t/h
t/h
7
5.5
5
4
10
8
7
5
30
25
20
15
60
50
45
35
85
70
65
50
115
95
85
65
150
120
110
85
Powder 0.5 t/m³
Inclination 0°
Inclination 30°
Inclination 45°
Inclination  60°
t/h
t/h
t/h
t/h
3.5
2.8
2.4
2
5
4
3.5
2.7
15
12
10
8
25
20
18
13
40
32
28
22
55
45
38
30
95
75
65
50
Material thickness in the standard design
Jacket (stainless steel) mm 2.2(2.0) 3.2 (2.0) 4.0 (3.0) 4.5 (3.0) 5.0 (3.0) 5.6 (3.0) 5.6 (4.0)
Thread inner/outer
Steel
Stainless steel
mm
mm
-
-
-
-
3/1.6
3/1.6
6/3
3.5/1.7
6/3
-
6/3
-
8/8
-
Screw flights
Steel
Stainless steel
mm
mm
3
3
3
3
5
4
5
4
5
4
5
4
6
5

Tubular screw conveyors design and accessories

Tubular screw conveyors

Angular inlet suitable for
Jacob transition piece

Tubular screw conveyors

Round inlet on Jacob pipework system

Tubular screw conveyors

Angular outlet suitable for
Jacob transition piece

Tubular screw conveyors

Round outlet to Jacob pipework system

Tubular screw conveyors

Loose counterflange
available for inlet and/or  outlet

Tubular screw conveyors

Progressive thread pitch

Tubular screw conveyors

Paddle thread
with paddles screwed in

Tubular screw conveyors

Overflow valve
with safety switch

Tubular screw conveyors

Inside overflow valve

Tubular screw conveyors

Capacitive sensor

Tubular screw conveyors

Two-part intermediate bearing

Tubular screw conveyors

Jacket pipe divided

Tubular screw conveyors

Hinged cover with safety switch 

Tubular screw conveyors

Holding plate

Tubular screw conveyors

Rain cover for geared motor

Tubular screw conveyors

Speed control

Tubular screw conveyors

Version for dry food

Tubular screw conveyors

ATEX zone 22 and 21

Tubular screw conveyors

Operating instructions
German or English

Shaft sealing for screw conveyors

The shaft seals of our screw conveyors can optional be constructed according to the conditions of use. Well established versions are shown in the table below. The shaft sealing rings are available for food and non-food.

Tubular screw conveyors

HP shaft seals flush with end plate

Tubular screw conveyors

Aluminium housing with two shaft sealing rings and grease block or flushing air connection

Tubular screw conveyors

Shaft sealing with stuffing box

Dimension drawing for tubular screw conveyors

Tubular screw conveyors

The dimensions of our different tubular screw conveyor types and their connecting dimensions are shown in the dimension drawing and the following table.

Dimensions of tubular screw conveyors

    RS170 RS220 RS270 RS320
A mm 180 (250) 250 (250) 300 (300) 350
A1 mm 202 (270) 270 (270) 325 (325) 375
A2 mm 220 (290) 290 (290) 345 (345) 375
A3 mm 71 (66) 75 62 (67) 71 (71)
B mm Ø 250 Ø 300 Ø 350 Ø 420
D mm Ø 168 Ø 219 Ø 273 Ø 324
L1 mm - - - -
L2 mm 56 56 59 60

Examples from our production

How to contact us

Phone +49 4121-7957-0

Fax +49 4121-7957-79

eMail e-mail@paul-groth.com

Contact us

Use the contact form or email, and the right employee will contact you directly.

To the contact form

Tags: Conveying technologyDischargeScrew conveyorScrew conveyorsTube screw conveyorsTubular screw conveyors

print