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Concrete spraying machine SSB 02.1 DUO Concrete spraying machine (gunite machine) TTS-400 Compulsory mixer M 180 COM-F

Concrete Spraying Machines (Gunite Machines) – SSB 14 / SSB 24

Field of Application

Concrete spraying machines series „SSB 14“ and „SSB 24“ have been designed for spraying concrete and refractory mixtures in the so-called dry way when the transported mixture gets moistened at the moment of spraying. The main advantage of this technology of spraying concrete is, in particular, its top rate of discharge from the jet (up to 30 m/s) which enables perfect consolidation of the concrete mixture and high strength of the sprayed concrete. Another important feature is the long distance transfer which enables the application of concrete mixture at hard to access places (up to 300 m horizontally and 100 m vertically). For more information regarding the dry technology of concrete spraying, please go to our Know How Database.


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Gunite machines series „SSB 14“ and „SSB 24“ are used, in particular, to reinforce surfaces of engineering structures and the construction of water works, to reinforce the vaulting of tunnels and collectors in underground engineering and to maintain concrete constructions. They are also used for spraying fire resistant materials (refractory materials) in metallurgy and chemical industries. Concrete spraying machines can also be used for the transport of loose material in glassworks and ironworks.

Manufactured Models

Concrete spraying machines SSB 14 and SSB 24 are manufactured in 5 basic models with different propulsion systems and output regulations for each of the series.

SSB 14 Series

The concrete spraying machine SSB 14 can reach a theoretical output of 0,5 – 3 m3/h and is designed for smaller scale concrete spraying work such as maintenance and repairs of concrete constructions, sealing, pointing, consolidation spraying, repairs of lining of blast furnaces, boilers and ranges of coke ovens.

Model Drive Output regulation
STANDARD One-speed electromotor smooth – variable belt pulley
DUO Two-speed electromotor two output positions – switch
COM-F One-speed electromotor smooth – frequency transformer
COM-V One-speed electromotor smooth – variator
COM-A Air turbine smooth

SSB 24 Series

SSB 24 concrete spraying machine is a more efficient option with a theoretical output of 4 – 6 m3/h. It is used for large scale concrete spraying work, in particular during the construction of foundations, shaft construction, and collector and tunnel construction. Thanks to the higher output, it can also be used for the transport of loose and dry materials.

Model Drive Output regulation
STANDARD One-speed electromotor One output position
DUO Two-speed electromotor Two output positions – switch
COM-F One-speed electromotor smooth – frequency transformer
COM-V One-speed electromotor smooth – variator
COM-A Air turbine smooth

Working Principle

Concrete spraying machines SSB work on the principle of pneumatic transport. Dry mixture (the natural moisture content of the transported mixture can be 7 % max.) for spraying or transport is poured into the chute and the pockets of the one sided dispensing drum located underneath the filling chute are filled in evenly. To enable a smoother transport of the mixture into the dispensing drum, the machine is equipped with a vibrator and clearing equipment. The rotating movement of the dispensing drum moves the mixture along to the blower, and the stream of air pressure blows it further along to the transport hose. A spraying jet is mounted onto the end of the hose. Gauge water is led to the jet and the transported mixture gets moistened here. The required moistening is regulated by an inlet cock.

The dispensing drum is driven either by an electromotor or an air turbine.

The output of the machine is regulated by:

  • rotation switch control (SSB 14 DUO, SSB 24 DUO)
  • mechanically by the variable belt pulley (SSB 14 STANDARD)
  • by the regulating knob of the variator (SSB 14 COM-V, SSB 24 COM-V)
  • by the frequency transformer remote control (SSB 14 COM-F, SSB 24 COM-F)
  • by the tap regulating the air turbine (SSB 14 COM-A, SSB 24 COM-A)

The concrete spraying machines propelled by an electromotor are designed for work where there is no danger of methane explosion. When working in an environment where there is such danger, it is essential to use a concrete spraying machine with an air turbine.

The machine can also be filled manually or using special mechanisms (such as belt conveyer, silo). In order to make the handling of bagged mixtures easier, the chute has an extension with a screen and a saw for cutting the bags.

The basic model is equipped with a manual lubricating gun which lubricates the abrasion surfaces of the sealing panel and the dispensing drum which prolongs the service life of these parts. Alternatively, each concrete spraying machine can be equipped with an automated central lubrication system which lubricates the specified places with specified amounts in specified frequencies in order to eliminate possible breakdowns caused by the human factor.

Technical Data

Parameter SSB 14 SSB 24
Output *) [m3/h] 0,5-3 4-6
Air consumption for transports of 40 m **) [m3/min] 2-5 6-8
Air pressure [Mpa] 0,5-0,6 0,5-0,6
Electromotor output [kW] 1,5; 1,35/1,87 2,2; 1,87/2,6
Mains connection 3× PEN 400 V 3× PEN 400 V
Inner diameter for transport hoses [mm] DN = 25,32,40,50 DN = 50
Granularity of transported material max. 16 mm for DN 40,50
max. 8 mm for DN 25,32
max. 16 mm
Horizontal transport distance [m] max. 300 max. 300
Vertical transport distance [m] max. 100 max. 100
Parameter SSB 14 SSB 24
Length [mm] 1000 1010
Width [mm] 780 780
Height [mm] 980 980
Weight (with no accessories) [kg] 300 350

*) These are theoretical values only. The actual output depends on the design of transported mixture, the capacity of the source of the compressed air, the transport distance and the diameter of the transport hose.

**) The data regarding the consumption of air is only approximate and depends on the momentary output of the machine, the transport distance and the diameter of the transport hose.

Advantages

  • easy handling due to the low weight of the machine
  • smooth regulation of the output (STANDARD and COM models)
  • belt drive preventing damage of the drive in the case of impulse stoppage of the machinery
  • remote control enabling the regulation of the output by the jet operator (COM-F model)
  • fast and easy termination of operation without demanding cleaning of the machinery
  • possibility of long distance transport of the concrete and transport to hard to access places (horizontally up to 300 m, vertically up to 100 m)
  • central lubrication prolongs the life of parts (sealing plates and the dosing drum)
  • low operational costs

Certification

All models of concrete spraying machines are in compliance with valid European Standards.

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