JPS5924384Y2 - Inorganic fiber spray gun - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a gun for spraying inorganic fibers.

The inorganic fiber spraying gun mixes cement milk with inorganic fibers such as rock wool, glass wool, and asbestos, and sprays this onto reinforcing bars, walls, etc. to adhere the inorganic fibers there. The one shown in Figure 2 has been used conventionally.

The inorganic fiber spraying gun shown in FIG. 1 has a flange 4 equipped with an annular hollow part 3 on the outer periphery of the tip of a cylinder 2 for ejecting inorganic fibers 1, and a plurality of nozzles 5 on the front surface of the flange 4. It is formed by forming.

Note that 6 is a pipe for pumping the cement milk 7 into the hollow part 3 of the flange 4, and 8 is a flexible hose for pumping the inorganic fiber 1 into the cylinder 2, the other end of which is connected to a pressure feeding machine (not shown). Connected.

This inorganic fiber spraying gun pumps inorganic fibers 1 into a cylinder 2 via a flexible hose 8 and cement milk 7 into a hollow part 3 of a flange 4 via a vibro, respectively, by a pressure feeder (not shown).

Then, the inorganic fibers 1 forced into the cylinder 2 are ejected from the end of the cylinder, but before the inorganic fibers 1 reach the objects such as reinforcing bars and walls, the inorganic fibers are sprayed from the nozzle 5 of the flange 4. The cement milk 7 to be sprayed is mixed.

In such conventional inorganic fiber spraying guns, cement milk 7 is mixed with inorganic fibers 1 in front of the tip of the gun, so there is a risk that the cement milk 7 may scatter and adhere to objects other than the target object. , and the moment milk 7 is not sufficiently mixed into the inorganic fiber 1, and the mixing state of the cement milk 7 is not uniform.

In the conventional inorganic fiber spraying gun shown in FIG. 2, the cement milk pumping pipe 9 in the inorganic fiber spraying gun shown in FIG. The nozzle 10 is formed at the tip of the nozzle.

Note that among the elements in FIG. 2, the same reference numerals as in FIG. 1 indicate the same elements as in FIG. 1.

This gun for spraying inorganic fibers is similar to the gun shown in FIG.
Also, the cement milk 7 is passed through the pipe 9 to the nozzle 1.
0 by a pressure feeder (not shown).

Then, the inorganic fibers 1 forced into the cylinder 2 are ejected from the tip of the cylinder, but before the inorganic fibers 1 reach the objects such as reinforcing bars and walls, they are sprayed from the nozzle 10. Cement milk 7 is mixed.

The conventional inorganic fiber spraying gun shown in FIG. Cement milk 7 is not mixed sufficiently in the
Further, the mixing state of the cement milk 7 is not uniform.

Moreover, in this inorganic fiber spraying gun, the pipe 9 is replaced by the cylinder 2.
Since it is guided to the axis of the inorganic fiber 1, it becomes an obstacle to the pumping of the inorganic fiber 1.

In view of these problems, the present invention provides a spray gun that can mix inorganic fibers and cement milk 7 sufficiently and uniformly. A plurality of holes are bored at equal intervals in the circumferential direction and perpendicularly to the axis of the cylinder,
The hole is connected to a pipe for pumping cement milk, and inorganic fibers are fed to the cylinder, and cement milk is injected from the hole, so that the mixture of cement milk and inorganic fibers is jetted out from the cylinder for pumping. It is in.

The present invention will be explained below with reference to the embodiments shown in FIGS. 3 and 4.

The gun for spraying inorganic fibers according to the present invention shown in FIG.
A plurality of holes 12 are bored at approximately equal intervals in the circumferential direction, and a hollow annular body 13 is inserted from the outside of the cylinder 2 so as to cover the holes.
Further, one end of a cement milk pumping pipe 15 whose other end is connected to a pumping machine (not shown) is connected to the hollow part 14 of the hollow annular body.

Note that in this figure, elements marked with the same reference numerals as those in FIG. 1 indicate the same elements as those in FIG. 1.

In this inorganic fiber spraying gun, when injecting inorganic fibers 1 from a cylinder 2, cement milk 7 is injected onto the inorganic fibers 1 in the cylinder through a plurality of holes 12 provided in a distal peripheral wall 11, and the cement milk is is mixed with inorganic fiber 1.

At this time, the cement milk 7 infiltrates toward the center of the inorganic fibers 1 from multiple directions of the cylindrical peripheral wall, and the inorganic fibers are distributed throughout the inorganic fibers while reaching the object, resulting in a uniformly mixed state.

Note that it is preferable that the cement milk 7 is injected toward the center of the cylinder 2 and approximately perpendicular to the axial direction through the holes 12. Therefore, when the wall thickness of the cylinder 2 is thick, the holes 12 are preferably injected. It is preferable to make the holes perpendicular to the wall surface.

Furthermore, as described above, if the holes 12 are provided in the peripheral wall 11 at the distal end of the cylinder 2, it is possible to prevent the cement milk 7 from sticking to the inner peripheral surface of the cylinder, and there is no risk of inhibiting the pumping of the inorganic fibers 1 (see FIG. 4). The gun for spraying inorganic fibers shown in FIG. 1 shows another embodiment.

This gun for spraying inorganic fibers is the same as the gun shown in FIG. 3, with a hole 17 for adding water 16 added thereto.

A plurality of holes 17 are formed at approximately equal intervals in the circumferential direction of the base peripheral wall 18 of the cylinder 2, and are covered by a hollow annular body 19 disposed on the outside of the cylinder 2.

The other end of the hollow part 20 of this hollow annular body 19 is connected to a pressure feeder (
(not shown) is connected to one end of a water pressure feeding pipe 21.

In this figure, elements marked with the same reference numerals as in FIG. 3 indicate the same elements as in FIG. 3.

In this inorganic fiber spraying gun, inorganic fibers 1 are pumped into a cylinder 2 via a flexible hose 8, are first sprayed through a plurality of holes 17 at the base of the cylinder, are given sufficient moisture with filtered water 16, and then are At the tip, cement milk 7 is sprayed as in the case of the inorganic fiber spraying gun shown in FIG. 3, and the object is sprayed with the cement milk sufficiently and uniformly impregnated.

In the case of such an inorganic fiber spraying gun shown in FIG. The cement milk 7 is quickly mixed into the inorganic fibers 1, which is more advantageous in making the cement milk 7 homogeneous.

Note that if a surfactant is added to the water 16 described above, it will become more compatible.

The gun for spraying inorganic fibers according to the present invention, as described above, sprays cement milk into the cylinder for pumping inorganic fibers from a plurality of locations toward the axis of the cylinder, almost perpendicular to the axis.
Cement milk is thoroughly and uniformly mixed into the inorganic fibers,
Spraying has no risk of contaminating parts other than the target object, and there is no need to spray cement milk in the form of a mist, so there is no need to use high-pressure compressed air for that purpose, and there is no need to use high-pressure compressed air to spray the cement milk. There is also less wear.

[Brief explanation of drawings]

1 and 2 are longitudinal cross-sectional views of main parts of a conventional inorganic fiber spraying gun, FIG. 3 is a longitudinal cross-sectional view of main parts of a gun for inorganic fiber spraying according to the present invention, and FIG. 4 is another embodiment. FIG. 1...Inorganic fiber, 2...Cylinder, 7...
...Cement milk, 8...Flexible hose, 11...Tip peripheral wall, 12...
Hole, 13...Hollow annular body, 14...Hollow part, 15...Pipe, 16...Water,
17... Hole, 18... Base peripheral wall, 19
...Hollow annular body, 20 ...Hollow part, 2
1...Pipe.

Claims (1)

[Claims for Utility Model Registration] 1. A plurality of holes 12 are bored in the peripheral wall 11 of the cylinder 2 for pressure-feeding inorganic fibers at equal intervals in the circumferential direction and at right angles to the axis of the cylinder. The hole 12 is connected to a pipe 15 for pumping cement milk, and the inorganic fibers are fed to the cylinder 2, and the cement milk is injected from the hole 12, and the mixture of cement milk and inorganic fibers is transferred to the cylinder 2 for pumping. A gun for spraying inorganic fibers that sprays out air from 2. 2 A plurality of holes 12 are provided in the tip peripheral wall 11 of the pressure-feeding cylinder 2, and water supply holes 17 are provided in the base peripheral wall 18 at equal intervals in the circumferential direction.
A gun for spraying inorganic fibers according to claim 1, which is a utility model, and has a hole 17 connected to a water pressure feeding pipe 21.