JPH1181674A - Spraying device and spraying nozzle for fiber-reinforced solidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spraying device for a fiber-reinforced solidifier capable of being used at a narrow site and provide a spraying nozzle used on the spraying device and capable of spraying the fiber-reinforced solidifier to a narrow filling position without scattering it. SOLUTION: This spraying device for a fiber-reinforced solidifier is provided with a spraying machine main body 2 having a blower 2a spraying the fiber- reinforced solidifier and a pump 2b feeding the water sucked from an external water feed source 6a via a suction hose 6 to a sprinkling nozzle 4b via a water feed hose 7 and a water pipe 4a. A spraying nozzle 3 fitted with a tapered conical tube 3b opened at the tip and the blower 2a are connected by a transportation hose 5. The fiber-reinforced solidifier is squeezed in the conical tube 3b, it is slightly spread and discharged from an opening 3e, and it is sprayed to a filling position. The water fed by the pump 2b is spouted from the jet port 4e of the sprinkling nozzle 4b opened near the opening 3e of the conical tube 3b, and the fiber-reinforced solidifier is reacted to water and solidified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION In the case where an air conditioning duct or piping is penetrated through a penetrating portion opened in a wall or floor of a building, a space between an outer wall surface of the air conditioning duct or piping and a penetration surface of the wall or floor is provided. Creates a narrow gap. The present invention relates to an apparatus for spraying a fiber-reinforced solidified material for spraying and filling the void with a fiber-reinforced solidified material, and a spray nozzle used for the same.

[0002]

2. Description of the Related Art Conventionally, an apparatus for spraying a fiber-reinforced solidified material has been disclosed in Japanese Utility Model Application No. Hei 4-15703 (Japanese Utility Model Application Laid-Open No. 5-765).
No. 46) is known.

[0003] This spraying device, as shown in FIG.
The reinforcing fiber finely cut by the cutter B is sent to the inner pipe D1 of the nozzle D via the transport pipe C by the compressed air from the compressor A, and the solidified material such as mortar mixed by the mixer E is further removed. , By the mortar pump F, is sent to the outer pipe D2 of the nozzle D via the transport pipe G, and is mixed with the reinforcing fiber at the mixing portion D5 provided between the distal opening D3 of the inner pipe D1 and the distal nozzle port D4 of the outer pipe D2. The solidified material is mixed to form a fiber-reinforced solidified material, which is jetted from the tip nozzle port D4.

However, in this spraying device, since the compressor A, the cutter B and the mixer D are separately constructed, the size of the spraying device for the fiber-reinforced solidified material becomes large, and the air-conditioning duct for the narrow air-conditioning duct is required. There was an inconvenience that it could not be carried into the installation site and sprayed.

[0005] Further, in addition to the above-mentioned nozzle D, a spray nozzle for spraying a fiber-reinforced solidified material has been conventionally used.
A spray nozzle as disclosed in Japanese Patent Publication No. 852 is known.

This spray nozzle is shown as a spray nozzle a in FIG. 6. A tip c for discharging a fiber-reinforced solidified material is screwed to one end of a cylindrical nozzle body b, and a water pipe d is fixed thereto. The cover e is movably attached to the nozzle body b, and a jet nozzle f for spraying water is attached to the tip of the water pipe d.

However, in the spray nozzle a, the tip c is enlarged toward the tip, and the fiber-reinforced solidified material is diffused and discharged from the opening of the tip c. When a fiber-reinforced solidified material is sprayed and filled at a location, the fiber-reinforced solidified material is scattered around the filled area and cannot be used in a narrow place.

[0008]

DISCLOSURE OF THE INVENTION The present invention relates to an apparatus for spraying a fiber-reinforced solidified material which can be used even in a small site, and a method for spraying the fiber-reinforced solidified material to a narrow filling portion without scattering the material. An object of the present invention is to provide a spray nozzle capable of performing the following.

[0009]

Means for Solving the Problems The present invention solves the above-mentioned problems, and the means for solving the above problems is a fiber in which a reinforcing fiber, a cement and a hydraulic inorganic adhesive are mixed as described in claim 1. A spray nozzle equipped with a pump for sucking and sending water from an external water supply source on a fiber reinforced solidified material spraying machine main body equipped with a blower for blowing a reinforced solidified material, and a spray nozzle having a tapered conical pipe with an open end, The blower is connected by a transport hose, and further, a water pipe with a watering nozzle attached to the tip is provided inside the conical tube, and the spouting nozzle of the watering nozzle is opened near the opening of the tip of the conical tube,
A spray device for a fiber-reinforced solidified material, wherein the water pipe and the pump are connected by a water supply hose.

[0010] In this spraying device, the fiber-reinforced solidified material is sent to the spraying nozzle through the transport hose, and when passing through the tapered conical tube, the inside of the conical tube becomes narrower toward the tip. The flow of the reinforcing solidified material is constricted there and is slightly spread from the tip opening and discharged. The fiber reinforced solidified material is sprayed toward the filling location.

[0011] At this time, water sucked from an external water supply source is sent from a water supply hose to a watering nozzle through a water pipe by a pump, and an injection port of the watering nozzle is provided inside the conical pipe at a tip thereof. Because it is open near the opening of
The water injected from the injection port collides with and mixes with the fiber-reinforced solidified material, and the fiber-reinforced solidified material mixed with water is discharged from the opening at the tip of the conical tube. And the fiber reinforced solidified material is
Reacts with water to increase its viscosity and adheres to the filling point,
There it solidifies.

Another solution is to attach a tapered conical tube having an open end to one end of a cylindrical nozzle body as described in claim 2, and to form an opening at the end inside the conical tube. A spray nozzle characterized by having an injection port of a watering nozzle opened in the vicinity.

In this spray nozzle, when the fiber-reinforced solidified material passes through the spray nozzle, it is narrowed toward the tip of the conical tube, and is slightly spread from the tip opening and discharged. Since the slightly expanded fiber reinforced solidified material is sprayed on the filling portion, the fiber reinforced solidified material does not scatter around the narrow filling portion. In addition, immediately after the fiber-reinforced solidified material protrudes from the opening at the tip of the conical tube, the water sprinkled from the spray nozzle outlet collides with and mixes with the fiber-reinforced solidified material, and the fiber-reinforced solidified material reacts with the water. To solidify at the filling point.

According to another aspect of the invention, there is provided a spray nozzle according to the second aspect, wherein the watering nozzle has a nozzle hole provided with a cylindrical hole and a throttle passage leading to the injection port, A spray nozzle characterized in that a cylindrical rotary member having a straight hole formed in the center and a spiral groove formed on the outer periphery is inserted into the cylindrical hole.

When water is sprayed in a mist state on the fiber-reinforced solidified material discharged from the conical tube, the amount of water that reacts with the fiber-reinforced solidified material becomes insufficient. Therefore, the spray nozzle is provided with a spiral groove of the rotating member. The rotating member is rotated by passing water through it, and the water is gently swirled in the communication passage, and the water that has been gently swirled and the water flowing through the straight hole in the center of the rotating member are not mist-like, but water droplets. And spray radially from the injection port. The radially sprayed water droplets evenly collide with the fiber reinforced solidified material discharged from the opening at the tip of the conical tube and mix with the fiber reinforced solidified material, so the sprayed fiber reinforced solidified material reacts with the water droplets to fill In place, it solidifies homogeneously.

[0016]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

In FIG. 1, reference numeral 1 denotes an apparatus for spraying the fiber-reinforced solidified material of the present invention. The fiber-reinforced solidified material is, for example, a mixture of a reinforcing fiber material such as rock wool mixed with cement and a hydraulic inorganic adhesive, and when reacted with water, its viscosity increases.

The spraying device 1 absorbs water from an external water supply source 6a via a water absorption hose 6 to a spraying machine main body 2 provided with a blower 2a for blowing out a fiber-reinforced solidified material, and sprays water to the tip via a water supply hose 7. A pump 2b for feeding water to a water pipe 4a to which a nozzle 4b is attached, and a spray nozzle 3 to which a tapered conical pipe 3b having an open end for discharging a fiber-reinforced solidified material is attached, and the blower 2a are connected by a transport hose 5. Connected to the nozzle 4e of the watering nozzle 4b.
Is opened near the opening 3e at the tip of the conical tube 3b.

The case 2c of the spraying machine body 2 is shown in FIG.
As shown in (A) and (B), for convenient carrying,
The upper and lower halves 2c1 and 2c2 are divided. Case 2
c, a hopper 2d is provided in the upper half 2c1.
d, the fiber-reinforced solidified material is fed to the blower 2a provided in the lower half 2c2 of the case 2c by the screw conveyor 2e attached to the lower part of the hopper 2d.

The blower 2a is driven by a motor 2g provided in the lower half 2c2. Also, the lower half 2c
2 is also driven by the motor 2g.

When a large amount of the fiber reinforced solidified material is put into the hopper 2d at a time, the reinforcing fibers of the fiber reinforced solidified material are entangled, and cement or a hydraulic inorganic adhesive is deposited thereon, and the fiber reinforced solidified material is transferred to the hopper 2d. It may not fall smoothly in 2d, and only the lower part of the fiber-reinforced solidified material may be scraped off by the screw conveyor 2e and the upper part may be bridged. In order to prevent such a bridging of the fiber-reinforced solidified material, a rotor 2f is attached to the upper part of the hopper 2d. The rotor 2f and the screw conveyor 2e are rotated by another motor 2h attached to the upper half 2c1 of the cover 2c.

As shown in FIGS. 3A and 3B, the spray nozzle 3 has, for example, a diameter of about 50 mm and a length of about 200 mm.
A tapered conical tube 3b having a distal end opened as a discharge port for discharging the fiber-reinforced solidified material is screwed into one end of a cylindrical nozzle body 3a made of metal having a diameter of mm.

In the illustrated embodiment, the length of the conical tube 3b is about 90 mm, and the diameter of the opening 3e at the end thereof is set so that the fiber-reinforced solidified material does not cause clogging.
The diameter of the conical tube 3b is changed to about 30 mm or more, and the conical tube 3b is screwed to one end of the nozzle main body 3a with the diameter of the opening 3e changed according to the width of the space as the filling point. The other end of the nozzle body 3a is connected to the transport hose 5 using a metal stopper (not shown).

Further, an elongated hole 3c is made in the longitudinal direction of the nozzle body 3a. Then, in the cover 3d fixed so as to cover the hole 3c, two elongated holes 3g and 3g are opened so as to extend to the long hole 3f and both sides thereof. Inside the hole 3c,
A slide plate 3h overlapping the inner surface of the edge of the hole 3c is provided.

A water pipe 4a is attached to the sliding plate 3h, and male screws 3i, 3i are passed through the elongated holes 3g, 3g, respectively, and fastened to female screw portions provided on the sliding plate 3h. In this way, the sliding plate 3h is connected to the nozzle body 3a.
It can be fixed to. Further, by moving the sliding plate 3h, the injection port 4e of the watering nozzle 4b attached to the tip of the water pipe 4a is opened inside the conical tube 3b near the opening 3e at the tip. is there.

The sprinkler nozzle 4b, as shown in FIG. 3 (C), in which opening the injection port 4e the distal end surface of the circular cross section of the metal nozzle cap 4b _1. In addition, water pipe 4a
Extends outside the nozzle body 3a through the elongated hole 3f,
The end 4c is connected to the water regulator 4d.

To finally adjust the position of the watering nozzle 4b and the amount of water, the male screws 3i, 3i are temporarily loosened,
The position of the watering nozzle 4b is temporarily set. Then, the fiber reinforced solidified material is experimentally discharged, and water is ejected from the injection port 4e of the watering nozzle 4b by operating the water amount regulator 4d.
The degree of wetting of the fiber-reinforced solidified material is determined. If the degree of wetting is good, the male screws 3i, 3i are tightened to fix the sliding plate 3h to the nozzle body 3a.

In order to spray and fill the narrow space between the outer wall of the air conditioning duct and the penetrating surface of the wall or the floor with the fiber reinforced solidifying material by using the blowing device 1, first, A backing plate made of, for example, rock wool board is provided in the opposite void portion so that the fiber-reinforced solidified material does not fly to the opposite side.

Next, the fiber-reinforced solidified material is put into the hopper 2d, and the fiber-reinforced solidified material is sent to the blower 2a by the screw conveyor 2e. The blower 2a
Thus, the fiber-reinforced solidified material is pressure-fed to the spray nozzle 3 via the transport hose 5. When the fiber-reinforced solidified material passes through the tapered conical tube 3b from the nozzle body 3a of the spray nozzle 3, the inside of the conical tube 3b becomes narrower toward the tip, so that the flow of the fiber-reinforced solidified material is reduced, and the fiber reinforcement is reduced. The solidified material spreads slightly from the distal end opening 3e of the conical tube 3b and is discharged, and the fiber reinforced solidified material is sprayed on the filling location.

At the same time, the amount of water sent from the water supply hose 7 to the water pipe 4a by the pump 2b of the spraying machine body 2 is adjusted by the water amount controller 4d, and the watering nozzle 4b
From the injection port 4e. The injected water collides with and mixes with the fiber-reinforced solidified material discharged from the opening 3e of the conical tube 3b.

Accordingly, the water-hardening inorganic adhesive and the cement of the fiber-reinforced solidification material react with water to increase the viscosity of the fiber-reinforced solidification material, and the fiber-reinforced solidification material is applied to the outer wall or wall of the air-conditioning duct with respect to the gap. And adheres to the penetration surface of the floor and fills the voids where it solidifies. The air conditioning duct is held by the fiber-reinforced solidified material solidified at the filling location.

As a fiber-reinforced solidified material in which rock wool, cement, and a hydraulic inorganic adhesive have been previously mixed in a factory, a product name “Brovest R” (registered trademark) manufactured and sold by Ask Co., Ltd. can be exemplified. Use of this eliminates the need to mix raw materials on site.

As another embodiment different from the above, there is a spray nozzle 3 'using a water spray nozzle for spraying water radially toward the fiber-reinforced solidified material to be discharged. As shown in FIG. 4A, the spray nozzle 3 '
A sprinkling nozzle 8 different from the above is screwed to the tip of a.

As shown in FIG. 4B, the water spray nozzle 8 has a cylindrical hole 8c formed on one end face side of a metal nozzle cap 8a having a circular cross section, and the other end face is sprayed from the hole 8c. A throttle passage 8d reaching the opening 8b is provided, and a rotating member 9 is rotatably inserted into the hole 8c. The rotating member 9 has a straight hole 9b formed in the center and three spiral grooves 9a, 9a, 9a formed on the outer periphery.
Also, a screw portion 8 is provided on one end face of the nozzle cap 8a.
e, and screw it to the tip of the water pipe 4a.
Then, the water passing through the spiral grooves 9a, 9a, 9a rotates the rotating member 9 as shown by an arrow α in FIG. 4B, and the water flowing into the passage 8d is shown by an arrow β. Then, make a gentle turn. The gently swirled water merges with the water that has passed through the rectilinear hole 9b, so that the slewing action is further reduced, and
From b, it becomes a water droplet instead of a mist, and is jetted radially.

The radially sprayed water droplets form a conical tube 3
Since the fiber-reinforced solidified material discharged from the tip opening 3'e of the tip 'b uniformly collides with the solidified material, the air-conditioning duct becomes more homogeneous with the solidified fiber-reinforced solidified material. Retained in strength.

[0036]

The invention according to claim 1 is provided with a blower that blows out fiber-reinforced solidified material and a pump that feeds water absorbed from the outside in a spraying machine main body.
Via a transport hose, it is connected to a blowing nozzle that discharges the fiber reinforced solidified material, and further, a watering nozzle that jets water for solidifying the fiber reinforced solidified material and the pump are connected with a water supply hose through a water pipe. Therefore, the size of the spraying device can be reduced, and the spraying device can be carried in and used even at a narrow air-conditioning duct installation site.

According to the second aspect of the present invention, the inside of the conical tube becomes narrower toward the tip, and the flow of the fiber-reinforced solidified material is restricted when passing through the conical tube,
Discharges slightly from the opening at the tip of the conical tube and sprays it toward a narrow filling point.At the same time, water injected from the nozzle of the watering nozzle collides with the fiber-reinforced solidified material and mixes with the fiber-reinforced solidified material. Therefore, there is an effect that the fiber-reinforced solidification material can be filled in a narrow filling portion and solidified there.

Further, the invention according to claim 3 is characterized in that the water that has been gently swirled by the rotation of the rotating member of the water injection nozzle and the water that has passed through the straight hole formed in the center of the rotating member have a droplet shape. As the water is ejected radially from the injection port, the radially ejected water drops evenly collide with the fiber reinforced solidified material discharged from the conical tube, react with the fiber reinforced solidified material, and react with the fiber reinforced solidified material. Is filled and solidified at the filling location, and the solidified fiber-reinforced solidified material has an effect of maintaining the air conditioning duct with uniform strength.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a device for spraying a fiber-reinforced solidified material according to the present invention.

FIG. 2A is a front view of a spraying machine main body of a fiber-reinforced solidified material. FIG. 2B is a cross-sectional view taken along the line IIB-IIB in FIG.

FIG. 3A is a partially cut side view of the spray nozzle of the present invention. (B) is a drawing of IIIB-IIIB in FIG.
Line sectional view. FIG. 3C is an enlarged sectional view of a tip portion of the spray nozzle of FIG.

FIG. 4A is a side view of a spray nozzle according to another embodiment of the present invention. (B) is a partially cut perspective view of a water injection nozzle used for the spray nozzle.

FIG. 5 is a schematic view showing a conventional apparatus for spraying a fiber-reinforced solidified material.

FIG. 6 is a side view showing a conventional spray nozzle.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Sprayer 2 Sprayer main body 2a Blower 2b Pump
3 spray nozzle 3a cylindrical nozzle body 3b tapered conical tube
3e opening 4a water pipe 4b, 8 watering nozzle 4b1, 8a nozzle cap 4e, 8b injection port
5 Transport hose 6a External water supply source 6 Water absorption hose
7 Water supply hose 8c Cylindrical hole 8d Throttle passage
9 Rotating member 9a Spiral groove 9b Straight running hole

Claims (3)

[Claims] Water is sucked from an external water supply source and sent to a fiber reinforced solidified material spraying machine main body provided with a blower for blowing a fiber reinforced solidified material in which a reinforcing fiber, cement and a hydraulic inorganic adhesive are mixed. A pump, a spray nozzle having a tapered conical tube with an open end connected to the blower and a blower, and a water pipe with a sprinkler nozzle mounted at the end is provided inside the conical tube. An apparatus for spraying a fiber-reinforced solidified material, characterized in that an injection port of a watering nozzle is opened near an opening at a tip of a pipe, and the water pipe and a pump are connected by a water supply hose. 2. A sprung nozzle having a tapered conical tube with an open end attached to one end of a cylindrical nozzle body, and an injection port of a watering nozzle is opened inside the conical tube near an opening at the end. And spray nozzle. 3. The spraying nozzle according to claim 2, wherein the watering nozzle has a cylindrical hole and a throttle passage extending to the injection port in the nozzle cap, and a straight-moving hole is formed in the cylindrical hole in the center. A spray nozzle characterized in that a cylindrical rotary member having a spiral groove formed in the outer periphery is inserted.