SU1370204A1 - Shotcreting nozzle - Google Patents

Abstract

The invention relates to construction. The purpose of the invention is to increase the efficiency of mixing the components with the aggregate. The device contains a tip 1 with a cylindrical body 2, humidifiers made in the form of two plugs - central 3 and peripheral 4. A mixed dry mixture is fed to the nozzle. The passage through the sleeve 3 of the humidifier, the central part of the dry mixture is moistened with cement mortar. Mixing takes place between the sleeves 3 and 4. Next, the mixture passes through the sleeve 4 humidifier. At the same time, through the annular channel 9, cement mortar is supplied to the periphery and wetting to the required consistency occurs. 3 il. five

Description

ft

00

o you

about

four

k-7

BUT

  f J

fi

one

The invention relates to the construction, in particular to devices for applying a concrete mix by the method of jumping.

The purpose of the invention is to increase the efficiency of mixing the components with the aggregate.

Figure 1 shows the nozzle section; figure 2 - section aa in fig, 1 in fig.Z - section bb in figure 1.

The nozzle contains a tip 1 connected to the cylindrical body 2 by means of a threaded connection, humidifiers made in the form of two sleeves, the first sleeve 3 of the humidifier located in the center of the inner space of the case 2 and the second sleeve 4 of the humidifier located on the periphery of the connection of the case 2 and the barrel-tip 1. The central sleeve 3 of the humidifier is located along the movement of the components in front of the peripheral sleeve 4. The distance between the sleeves 3 and 4 is assumed to be three to five diameters of the housing 2.

The central sleeve 3 of the humidifier is made in the form of a hollow ring with holes 5 for supplying a filler, for example cement mortar, to the center of the component stream and radially arranged connections 6 for communication with the annular cavity 7 around the housing 2,

The peripheral sleeve 4 of the humidifier contains an annular cavity 8 communicated with the inner space of the housing 2 and the stem-tip 1 along the periphery by means of an adjustable

an annular channel 9 formed by no 40 components with a filler; a sleeve is the junction between the ends of the body 2 and the barrel of the tip 1. The cement mortar under pressure is fed into the annular cavities 7 and 8 through nozzles 10 and 11.

The nozzle works as follows.

Compressed air is fed to the nozzle by a pre-mixed dry mixture of components. Initial components

the humidifier is installed in series with each other, with the central sleeve mounted along the movement of the components in front of the peripheral sleeve of the humidifier, which is fixed with the formation of an adjustable annular channel at the junction between the housing and the handpiece.

20

five

ten

five

02042

pass through the sleeve 3 of the humidifier, located in the center of the inner space of the housing 2, while the central part of the dry mixture flow is wetted with cement mortar, which flows under pressure from the nozzle 10 through the annular cavity 7, the radial nozzles 6 and the orifice 5. The distance between sleeves 3 and 4, the mixture of components and cement slurry is mixed vigorously.

Next, the mixture passes through the cross section of the sleeve 4 humidifier. At the same time, through the 15th annular channel 9, cement mortar is supplied under pressure at the periphery of the stream, which is partially mixed in the center of the mixture of components. The periphery of the dry mix is moistened to the desired consistency.

The dry mixture, moistened in the center and on the periphery of the stream, is transported by compressed air to the barrel-tip, mixed vigorously in

it flies out of the nozzle and hits the treated surface.

Claims (1)

Invention Formula Concrete spray nozzle comprising a cylindrical body with a tip, humidifiers made in the form of central and peripheral sleeves with nozzles for feeding components, the central sleeve being connected to the annular cavity by means of nozzles, in order to increase the mixing efficiency components with filler, bushings the humidifier is installed in series with each other, with the central sleeve installed along the movement of the components in front of the peripheral sleeve of the humidifier, which is fixed with the formation of an adjustable annular channel at the junction between the housing and the handpiece. Aa us.2 B C (rig. 3