JP3799514B2 - Fiber reinforced solidifying material spraying device and spray nozzle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
When air-conditioning ducts or pipes are installed through penetrations in a building wall or floor, a narrow gap is created between the outer wall surface of the air-conditioning duct or pipe and the wall or floor penetration surface. The present invention relates to a fiber reinforced solidified material spraying apparatus for spraying and filling a fiber reinforced solidified material into the gap and a spray nozzle used therefor.
[0002]
[Prior art]
As a device for spraying a fiber-reinforced solidified material, a device as disclosed in a microfilm of Japanese Utility Model No. 4-15703 (Japanese Utility Model Publication No. 5-76546) has been known.
[0003]
As shown in FIG. 5, this spraying device sends the reinforcing fiber finely cut by the cutter B to the inner pipe D1 of the nozzle D through the transport pipe C by compressed air from the compressor A, and further, the mixer The solidified material such as mortar mixed in E is sent to the outer pipe D2 of the nozzle D through the transport pipe G by the mortar pump F, and the tip opening D3 of the inner pipe D1 and the tip nozzle port D4 of the outer pipe D2 In the mixing part D5 provided between the reinforcing fiber and the solidifying material, the reinforcing fiber and the solidifying material are mixed to form a fiber-reinforced solidifying material, and this is injected from the tip nozzle port D4.
[0004]
However, in this spraying device, the compressor A, the cutter B, and the mixer D are configured separately, so that the size becomes large as a spraying device for fiber-reinforced solidified material, so that the air-conditioning duct can be installed at a narrow site. There was an inconvenience that it could not be carried in and sprayed.
[0005]
Further, as a spray nozzle for fiber-reinforced solidified material, a spray nozzle disclosed in Japanese Utility Model Publication No. 57-60852 is known in addition to the nozzle D.
[0006]
This spray nozzle is shown as spray nozzle a in FIG. 6, and a cover e to which a tip end c for discharging a fiber-reinforced solidifying material is screwed to one end of a cylindrical nozzle body b and a water pipe d is fixed. A nozzle body b is movably attached, and an ejection nozzle f for spraying water is attached to the tip of the water pipe d.
[0007]
However, since the tip c of the spray nozzle a expands toward the tip, and the fiber-reinforced solidified material is diffused and discharged from the opening of the tip c, the fiber is filled in the narrow space such as the gap. When the reinforcing solidifying material is sprayed and filled, the fiber-reinforced solidifying material scatters around the filling portion and cannot be used in a narrow place.
[0008]
[Problems to be solved by the invention]
It is an object of the present invention to provide a fiber-reinforced solidifying material spraying device that can be used even in a narrow field, and a spray nozzle that can be used in the device to spray a fiber-reinforced solidifying material to a narrow filling place without scattering the fiber-reinforced solidifying material. Let it be an issue.
[0009]
[Means for Solving the Problems]
The present invention solves the above-mentioned problem, and the means thereof is, as described in claim 1, a hopper for mixing reinforcing fibers, cement, and a hydraulic inorganic adhesive by a screw conveyor , and this mixing. the spray machine main body of fiber reinforced hardening material and a blower for blowing fiber reinforced solidifying material, a pump for delivering to suck the water from an external water supply source, preventing bridging of the fiber reinforced solidifying material to the top of the hopper A rotary nozzle is attached, the blowing nozzle with a tapered conical tube with an open end is connected to the blower by a transport hose, and a water pipe with a watering nozzle attached to the tip is connected inside the conical tube. And a water spray hose connected to the water pipe and the pump by a water supply hose. A blowing device for reinforcing solidifying material.
[0010]
In this spraying device, a rotating blade for preventing bridging is attached to the fiber-reinforced solidified material on the upper part of a hopper to be mixed by a screw conveyor. Furthermore, in this spraying device, since the fiber-reinforced solidified material is sent to the spray nozzle via the transport hose and passes through the tapered conical tube, the inside of the conical tube becomes narrower as it goes to the tip. The flow of water is squeezed there and discharged from the tip opening slightly spreading. 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 through a water pipe to a water spray nozzle by a pump, and the water spray nozzle has an outlet near the opening at the tip thereof inside the conical tube. Therefore, the water jetted from the injection port collides with the fiber-reinforced solidified material and is mixed, and the fiber-reinforced solidified material mixed with water is discharged from the opening at the tip of the conical tube. The fiber-reinforced solidified material reacts with water to increase its viscosity, adheres to the filling site, and solidifies there.
[0012]
The invention described in claim 2 is directed to supplying water from an external water supply source to a fiber reinforced solidified material spraying machine body provided with a blower for blowing out a fiber reinforced solidified material in which reinforcing fibers, cement, and a hydraulic inorganic adhesive are mixed. A pump that sucks and feeds, a spray nozzle with a tapered conical tube with an open end and a blower are connected by a transport hose, and a water pipe with a watering nozzle attached to the tip is provided inside the conical tube The water spray nozzle is opened near the opening of the tip of the conical tube, and the water pipe and pump are connected by a water supply hose. The water spray nozzle is a throttle that reaches the nozzle hole and the cylindrical hole. A passage is provided, a straight hole is formed in the center of the cylindrical hole, and a cylindrical rotating member having a spiral groove formed on the outer periphery is inserted.
According to a third aspect of the present invention , a tapered conical tube having an open end is attached to one end of a cylindrical nozzle body, and a water spray is formed in the conical tube in the vicinity of the opening of the end. It is a spray nozzle characterized by opening an injection port of a nozzle.
[0013]
In this spray nozzle, when the fiber-reinforced solidified material passes through the spray nozzle, it is squeezed as it goes to the tip of the conical tube, and is discharged from the tip opening slightly. Since the slightly expanded fiber reinforced solidified material is sprayed on the filling portion, the fiber reinforced solidifying material is not scattered around the narrow filling portion. In addition, the water sprayed from the spray nozzle outlet collides with the fiber reinforced solidified material immediately after the fiber reinforced solidified material protrudes from the opening at the tip of the conical tube, and the fiber reinforced solidified material reacts with the water. Solidify at the filling point.
[0014]
Furthermore, in this spray nozzle, the watering nozzle is provided with a cylindrical hole in the nozzle cap and a throttle passage leading to the injection port, a straight advance hole is formed in the cylindrical hole, and a spiral groove is formed on the outer periphery. It is a spray nozzle characterized by inserting a cylindrical rotating member.
[0015]
When water is sprayed onto the fiber-reinforced solidified material discharged from the conical tube in a mist, the amount of water that reacts with the fiber-reinforced solidified material is insufficient. Therefore, this spray nozzle sprays water into the spiral groove of the rotating member. By rotating the rotating member, the water is swirled loosely in the communication path. The loosely swirled water and the water flowing through the straight advance hole in the central portion of the rotating member are made into water droplets instead of mist. It ejects radially from the ejection port. Since the water droplets injected radially collide with the fiber reinforced solidified material discharged from the opening of the tip of the conical tube and mix with the fiber reinforced solidified material, the sprayed fiber reinforced solidified material reacts with the water droplets and fills Solidify uniformly at the point.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0017]
In FIG. 1, reference numeral 1 denotes a fiber-reinforced solidifying material spraying apparatus of the present invention. The fiber-reinforced solidified material is, for example, a mixture of a reinforced fiber material such as rock wool and cement and a hydraulic inorganic adhesive, and its viscosity increases when it reacts with water.
[0018]
The spraying device 1 absorbs water from an external water supply source 6a through a water absorption hose 6 to a spraying machine main body 2 provided with a blower 2a that blows out a fiber-reinforced solidified material, and a water spray hose 7 and a water spray nozzle 4b at the tip. A pump 2b for supplying water to the attached water pipe 4a is connected, and the blowing nozzle 3 to which a tapered conical tube 3b having an open end for discharging the fiber-reinforced solidified material is connected to the blower 2a by a transport hose 5, Further, the spray port 4e of the watering nozzle 4b is opened near the opening 3e at the tip of the conical tube 3b.
[0019]
As shown in FIGS. 2A and 2B, the case 2c of the sprayer main body 2 is divided into two upper and lower halves 2c1 and 2c2 for convenience of carrying. A hopper 2d is provided in the upper half 2c1 of the case 2c, a fiber reinforced solidified material is put into the hopper 2d, and the fiber reinforced solidified material is attached to the lower half 2c2 of the case 2c by a screw conveyor 2e attached to the lower portion of the hopper 2d. To the blower 2a provided in
[0020]
The blower 2a is driven by a motor 2g provided in the lower half 2c2. The pump 2b provided in the lower half 2c2 is also driven by the motor 2g.
[0021]
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 with each other, and cement or a hydraulic inorganic adhesive is deposited on the fiber reinforced solidified material in the hopper 2d. It may not fall smoothly, 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 fiber-reinforced solidified material from bridging, a rotary blade 2f is attached to the upper part of the hopper 2d. The rotary blade 2f and the screw conveyor 2e are rotated by another motor 2h attached to the upper half 2c1 of the cover 2c.
[0022]
As shown in FIGS. 3 (A) and 3 (B), the spray nozzle 3 is a discharge nozzle for discharging a fiber-reinforced solidified material to one end of a metal cylindrical nozzle body 3a having a diameter of about 50 mm and a length of about 200 mm. A tapered conical tube 3b having an open end is screwed as an outlet.
[0023]
In the illustrated embodiment, the length of the conical tube 3b is about 90 mm, and the diameter of the opening 3e at the tip thereof is about 30 mm or more so as not to be clogged by the fiber-reinforced solidified material. The tube 3b is screwed into one end of the nozzle body 3a with the diameter of the opening 3e changed according to the width of the gap as a filling location. The other end of the nozzle body 3a is connected to the transport hose 5 using a metal stopper (not shown).
[0024]
Further, an elongated hole 3c is formed in the longitudinal direction of the nozzle body 3a. Then, a long hole 3f and two elongated holes 3g and 3g are formed in the cover 3d fixed to cover the hole 3c so as to extend on both sides thereof. A sliding plate 3h is provided inside the hole 3c so as to overlap the inner surface of the edge of the hole 3c.
[0025]
A water pipe 4a is attached to the sliding plate 3h, and male screws 3i and 3i are passed through the elongated holes 3g and 3g, respectively, and fastened to female screw portions provided on the sliding plate 3h. The sliding plate 3h can be fixed to the nozzle body 3a. Further, by moving the sliding plate 3h, the spray port 4e of the water spray nozzle 4b attached to the tip of the water pipe 4a is opened in the vicinity of the opening 3e at the tip inside the conical tube 3b. is there.
[0026]
Sprinkler nozzles 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. The water pipe 4a extends out of the nozzle body 3a through the long hole 3f, and an end 4c of the water pipe 4a is connected to the water amount adjuster 4d.
[0027]
In order to finally adjust the position of the watering nozzle 4b and the amount of water, the male screws 3i and 3i are once loosened, and the position of the watering nozzle 4b is temporarily set. Then, the fiber reinforced solidified material is discharged on a test basis, and the water amount adjuster 4d is operated to eject water from the injection port 4e of the water spray nozzle 4b to determine the wetness of the fiber reinforced solidified material. Is good, the male screws 3i and 3i are tightened to fix the sliding plate 3h to the nozzle body 3a.
[0028]
In order to spray and fill the fiber-reinforced solidified material into the narrow gap between the outer wall of the air conditioning duct and the through surface of the wall or floor using the blowing device 1, first, the side opposite to the blowing side of the gap is used. For example, a cover plate made of rock wool board is provided in the gap portion so that the fiber-reinforced solidified material does not fly to the opposite side.
[0029]
Next, the fiber reinforced solidified material is put into the hopper 2d, and the fiber reinforced solidified material is fed into the blower 2a by the screw conveyor 2e. The blower 2 a blows the fiber-reinforced solidified material through the transport hose 5 and pumps it to the nozzle 3. 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 as it goes to the tip, so that the flow of the fiber reinforced solidified material is narrowed down and the fiber reinforced solidified material is reinforced. The solidified material is slightly spread and discharged from the tip opening 3e of the conical tube 3b, and the fiber-reinforced solidified material is sprayed on the filling portion.
[0030]
At the same time, the water sent from the water supply hose 7 to the water pipe 4a by the pump 2b of the sprayer main body 2 is adjusted by the water amount adjuster 4d and injected from the injection port 4e of the water spray nozzle 4b. The jetted water collides with and mixes with the fiber-reinforced solidified material discharged from the opening 3e of the conical tube 3b.
[0031]
As a result, the water-curable inorganic adhesive and cement of the fiber reinforced solidified material react with water to increase the viscosity of the fiber reinforced solidified material, and the fiber reinforced solidified material adheres to the outer wall, wall, or floor of the air-conditioning duct related to the gap. It adheres to the penetrating surface, fills in the gap, and solidifies there. The air conditioning duct is held by the fiber-reinforced solidified material solidified at the filling location.
[0032]
In addition, as a fiber reinforced solidified material in which rock wool, cement and hydraulic inorganic adhesive are mixed in advance at the factory, the product name “Brobest R” (registered trademark) manufactured and sold by Ask Corporation can be exemplified and used. This eliminates the need to mix ingredients on site.
[0033]
As an embodiment different from the above, there is a spray nozzle 3 ′ using a watering nozzle that sprays water radially toward the fiber-reinforced solidified material to be discharged. As shown in FIG. 4 (A), the spray nozzle 3 'is formed by screwing a watering nozzle 8 different from the above at the tip of a water pipe 4a.
[0034]
As shown in FIG. 4B, the watering nozzle 8 has a cylindrical hole 8c formed on one end surface side of a metal nozzle cap 8a having a circular cross section, and the injection port 8b on the other end surface is formed from the hole 8c. A restricting passage 8d is provided, and a rotating member 9 is rotatably inserted into the hole 8c. The rotating member 9 has a rectilinear hole 9b formed at the center and three spiral grooves 9a, 9a, 9a formed on the outer periphery. Further, a threaded portion 8e is provided on one end face of the nozzle cap 8a and is screwed 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 indicated by the arrow α in FIG. 4B, and the water flowing into the passage 8d is indicated by the arrow β. Rotate gently. The loosely swirling water merges with the water that has passed through the rectilinear hole 9b, so that the swirling action is further relaxed, and the water is ejected radially from the ejection port 8b in the form of water droplets instead of mist.
[0035]
The water droplets ejected radially collide evenly with the fiber-reinforced solidified material discharged from the tip opening 3′e of the conical tube 3′b, and thereby the fiber-reinforced solidified material is uniformly solidified. The duct is held at a uniform strength by the solidified fiber-reinforced solidified material.
[0036]
【The invention's effect】
In the present invention, the blower body is equipped with a blower for blowing out the fiber-reinforced solidified material and a pump for feeding water absorbed from the outside, and the blower is connected to a blowing nozzle for discharging the fiber-reinforced solidified material through a transport hose. Furthermore, since the watering nozzle for injecting water for solidifying the fiber-reinforced solidifying material and the pump are connected by a water supply hose through a water pipe, the spraying device can be made compact, and the air conditioning duct is narrow. Even at the installation site, there is an effect that the spraying device can be carried in and used.
[0037]
Further, in the present invention, the inside of the conical tube becomes narrower as it goes to the tip, and the flow of the fiber-reinforced solidified material is squeezed when passing through the conical tube, and slightly expands from the tip opening of the conical tube. Discharge and spray it toward a narrow filling point, and at the same time, water sprayed from the spray nozzle nozzle collides with the fiber reinforced solidified material and mixes with the fiber reinforced solidified material. It can be filled with and solidified there.
[0038]
Furthermore, in the present invention, the water swirled loosely by the rotation of the rotating member of the water injection nozzle and the water that has passed through the rectilinear hole opened in the central portion of the rotating member are in the form of water droplets that radiate from the injection port. Since the sprayed water droplets uniformly collide with the fiber reinforced solidified material discharged from the conical tube, react with the fiber reinforced solidified material, the fiber reinforced solidified material is filled and solidified at the filling location, The solidified fiber-reinforced solidified material has an effect of holding the air conditioning duct with uniform strength.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a fiber-reinforced solidifying material spraying apparatus according to the present invention.
FIG. 2A is a front view of a sprayer main body of a fiber-reinforced solidified material. (B) is the IIB-IIB sectional view taken on the line of FIG. 2 (A).
FIG. 3A is a partially cut side view of the spray nozzle of the present invention. (B) is the IIIB-IIIB sectional view taken on the line of FIG. 3 (A). (C) is an expanded sectional view of the front-end | tip part of the spray nozzle of FIG. 3 (A).
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 jet nozzle used for the spray nozzle.
FIG. 5 is a schematic diagram showing a conventional fiber-reinforced solidifying material spraying apparatus.
FIG. 6 is a side view showing a conventional spray nozzle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Spraying apparatus 2 Spraying machine main body 2a Blower 2b Pump 3 Spraying nozzle 3a Cylindrical nozzle main body 3b Tapered conical tube 3e Opening 4a Water pipe 4b, 8 Sprinkling 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 Restriction passage 9 Rotating member 9a Spiral groove 9b Straight advance hole

Claims (3)

The reinforcing fiber and cement and hydraulic inorganic adhesive and hopper mixing by the screw conveyor, the spray machine main body of fiber reinforced hardening material and a blower for blowing the mixed fiber reinforced consolidated material, water from an external water supply source Equipped with a pump that inhales and delivers
A rotary blade for preventing bridging of the fiber-reinforced solidified material is attached to the upper part of the hopper,
The blower nozzle attached with a tapered conical tube with an open end is connected to the blower by a transport hose, and a water pipe with a water spray nozzle attached to the tip 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 in the vicinity of the opening, and the water pipe and the pump are connected by a water supply hose. A fiber reinforced solidified material spraying machine body equipped with a blower that blows out fiber reinforced solidified material mixed with reinforcing fibers, cement, and a hydraulic inorganic adhesive is equipped with a pump that sucks and sends water from an external water supply source,
The blower nozzle attached with a tapered conical tube with an open end is connected to the blower by a transport hose, and a water pipe with a water spray nozzle attached to the tip is provided inside the conical tube, A water spray nozzle is opened near the opening, and the water pipe and pump are connected by a water supply hose.
The sprinkling nozzle is provided with a cylindrical hole in the nozzle cap and a throttle passage leading to the injection port, a straight hole is formed in the cylindrical hole, and a cylindrical groove is formed on the outer periphery. An apparatus for spraying a fiber-reinforced solidified material, wherein a member is inserted. A tapered nozzle having a tapered opening attached to one end of a cylindrical nozzle body, and a spray nozzle having an opening of a water spray nozzle in the vicinity of the opening of the tip inside the cone,
The sprinkling nozzle is provided with a cylindrical hole in the nozzle cap and a throttle passage leading to the injection port, a straight hole is formed in the cylindrical hole, and a cylindrical groove is formed on the outer periphery. A spray nozzle comprising a member inserted therein.

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