Spraying gun for GFRC

GFRC' spraying gun (model RPN) is the main element of GFRC equipment.

It is consists of: URN (a point of cut roving) and URS (a point of opening and mixing). The operation concept of RPN is the following: the glass roving is resupplyed to joining the pipe of cut roving and handle to cutoff knife. The drum rotation with the blades are carried out by the pneumatic drive (1-st take-over point of compressed air). Solidarily there is an air supply through a separate channel to a hermetically closed chamber URR (2-st take-over point of compressed air) and form a flame body from a chopped glass fiber.

The spraying gun for GFRC application of the model RPN4

The fiber is collected in a container after URR in case of using premix. In case of using sprayed plaster base, the fiber handles to URS after URR, where on the nozzle atomizer exit it is mixed with the mix, coming from the grout pump and the air (3-st take-over point of compressed air). As a result there is the formed flame body from the chopped fiber and the overrun matrix.

The specifications of the concentrical spraying gun for GFRC:

Items	Unit measure	Description
The gear system		Pneumatic
The rotation speed of the pneumatic drive	r/min	not more than 2000
The capability of the pneumatic drive	W	500
The solution throughput	m3/hr	0,16-0,24
The fiber productivity*	kg/min	0.3 – 0.6
The fiber length**	mm	10, 15, 20, 30, 40
The compressed air flow of the pneumatic drive	m3/min	up to 0,57
The compressed air flow to the fiber blowing	m3/min	up to 0,35
The compressed air flow for spattering of a cement grout	m3/min	up to 1.2
The compressed air pressure for the pneumatic drive	Megapascal (kg/sm2)	0.40-0.63  (4.0-6.3)
The compressed air pressure for the fiber blowing	Megapascal (kg/sm2)	0.3-0.6  (3-6)
The compressed air pressure for spattering of a cement grout	Megapascal (kg/sm2)	0.2-0.3  (2-3)
The noise level of the pneumatic drive	dB	95,0
Net weight РПН4/RPN4 РПН5/RPN5	kg	4,2 3,9
The dimensional specifications (length-width-depth)	mm	410 х 203 х 390