JP2022157870A - Fiber spraying device and fiber spraying method - Google Patents

Abstract

To provide a technique by which in a fiber spraying device used for spraying method of fiber composition by dry construction method or semi-dry construction method, pulsation is less likely to occur in a fiber pumping path, and it is less likely to occur that even when stopping supply of fibers such as rock wools into the fiber pumping path, fine particles of the fibers staying in the fiber pumping path continue to eject from a fiber discharge port, and the fibers are clogged in the fiber pumping path.MEANS: A pressure in a fiber pumping path is measured by a pressure gauge fiber, pressure data Pm in the fiber pumping path at that time is transmitted to (K) calculator, and is compared to allowable pressure upper limit value data Pmax stored in a memory for an allowable pressure upper limit value and allowable pressure lower limit value data Pmin stored in a memory for an allowable pressure lower limit value. When the pressure data is out of an allowable pressure range, a transmission order is issued from a controller, and an overpressure transmission device or an underpressure transmission device, which has received the order, notifies circumferential people that the pressure data is out of the allowable pressure range.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber spraying apparatus used for rock wool spraying work using a dry spraying method or a semi-dry spraying method.

BACKGROUND ART For the purpose of imparting fire resistance, fire resistance, sound absorption and/or heat insulation, etc., it is widely practiced to provide a fiber layer made of rock wool on the surface of a structure. For the formation of the fiber layer, a spraying method using granular fibers (fiber clumps with a diameter of several mm to several cm) and water as a main component is often used. As the rock wool spraying method, a wet method, a dry method, and a semi-dry method are known.

In the wet construction method, a covering material for spraying is used, which is made by blending secondary materials (surfactants and thickeners) with the main material (granular rock wool fibers and cement), and water is added to this and kneaded with a mixer. It is a method of blowing an object from a nozzle with compressed air.

In the dry method, a dry mixture (dry mixture, hereinafter sometimes referred to as "rock wool-cement blend" or "cotton blend") obtained by dry-mixing rock wool granular fibers and cement in advance is applied to a rock wool sprayer (rock wool The cotton is put into a cotton blowing device called a cotton blowing machine or a cotton removing machine, and the cotton is loosened by a built-in removing part such as a rotary cutter or a rotating rod, and a rotary feeder or the like built in the removing cotton. Quantitatively delivered into the pumping path by a blower (blower), pumped through the hose, discharged from the spray nozzle, and at the same time, multiple spouts arranged around the periphery of the spray nozzle or / and the center of the spray nozzle In this method, pressurized water is sprayed from one nozzle located near the shaft, and the two are merged, mixed, and sprayed.

The semi-dry construction method is a construction method in which rock wool granular fibers and cement are not mixed in advance. In the semi-dry method, granular rock wool fibers are put into the dissolving device in the same way as the mixed cotton in the dry method, and finely granulated (with a diameter of several mm to A fiber mass of about several centimeters) is sent quantitatively into the pressure feed route by a rotary feeder or the like built in the puffing device, and the fiber is pressure fed through the hose by a blower and supplied to the spray nozzle. be. After cement is mixed with water in a mixer to form a cement slurry, it passes through a conveying pipe (cement slurry pressure-feeding hose) by a slurry pump and is placed in a granular fiber spraying nozzle for a liquid material (cement slurry) spray nozzle. supplied to The cement slurry is sprayed from liquid material (cement slurry) spray nozzles arranged around the periphery of the granular fiber spray nozzle, or liquid material (cement slurry) spray nozzles arranged near the central axis of the granular fiber spray nozzle (For cement slurry) It is sprayed from a spray nozzle, joins and mixes with rock wool, and forms a fiber layer consisting of rock wool and cement hydrate. According to the semi-dry construction method, it is possible to form a coating layer with less floating dust and a bulk density close to that of the dry construction method. For this reason, the semi-dry method has become the mainstream of the rock wool spraying method (see, for example, Patent Document 1 (page 2, Figure 3), Patent Document 2 (Figure 4), and Non-Patent Document 1. ).

Compared to the wet method, the dry method and the semi-dry method can be pumped over a longer distance. There is no need to move it many times and it does not take time and effort. Moreover, the dry construction method and the semi-dry construction method can reduce the bulk density of the coating layer (blasted rock wool layer) formed by the rock wool spraying method compared to the wet construction method. For this reason, the dry construction method and the semi-dry construction method are more commonly used than the wet construction method.

Japanese Patent Application Laid-Open No. 2002-348978 JP-A-07-166618

``Fireproof coating work'' [online], First Built Co., Ltd. [Searched on March 5, 2021], Internet <URL: http://www.firstb.co.jp/fireproofing_01.html>

However, in the dry and semi-dry methods, depending on the construction conditions, pulsation occurs when rock wool granular fibers or blended cotton (hereinafter referred to as "rock wool" or "fibers" as appropriate) is pumped, and rock wool Even when the supply to the fiber pumping path is stopped, fine particles of rock wool remaining in the fiber pumping path continue to be ejected from the fiber discharge port, or the fiber pumping path may be clogged with rock wool.

When pulsation occurs, the quality of the formed fiber composition becomes unstable. When fine particles of rock wool are discharged, dust flies around and the working environment deteriorates. If the inside of the fiber pumping path becomes clogged, the construction will be interrupted immediately. Since these occur unexpectedly, the builder during construction has a heavy psychological burden.

The present invention is intended to solve the above problems, and in a fiber spraying device used for a fiber composition spraying method by a dry method or a semi-dry method, pulsation is unlikely to occur in the fiber pumping path, and rock wool etc. Even if the supply of the fibers into the pressure-feeding path of the fibers is stopped, the fine particles of the fibers remaining in the pressure-feeding path of the fibers are unlikely to continue to be ejected from the fiber discharge port, and the fibers are clogged in the pressure-feeding path of the fibers. The purpose is to provide a technology that makes it difficult for this to happen.

The present invention is intended to solve the above problems, in a fiber spraying device used for a fiber composition spraying method by a dry method or a semi-dry method, suppressing the occurrence of pulsation in the fiber pumping path, Even if the supply of fibers such as fibers to the fiber pressure-feeding route is stopped, the fine particles of the fibers remaining in the fiber pressure-feeding route are suppressed from continuing to be ejected from the fiber discharge port, and the fibers It is an object of the present invention to provide a technique capable of improving workability by suppressing clogging in a pumping path.

As a result of intensive studies for solving the above problems, the present inventors measured the pressure in the fiber pumping path with a pressure gauge, transmitted the pressure data P _m in the fiber pumping path at that time to the arithmetic device, and determined the allowable pressure upper limit value. The allowable pressure upper limit value data P _max stored in the memory for the allowable pressure lower limit value and the allowable pressure lower limit value data P _min stored in the allowable pressure lower limit value memory are compared. Equipped with a transmission device that informs a person that the pressure is excessive or insufficient, and the control device suppresses or increases the supply of fibers from the constant supply device of the peptizer to the fiber pressure-feeding pipe in response to a suppression command or an increase command. The inventors have found that the above problem can be solved by increasing the amount, and completed the present invention. That is, the present invention is a fiber spraying device represented by (1) or (2) and a fiber spraying method represented by (4) and (5) below.
(1) (A) A fiber passage having a fiber injection port at one end and a fiber pumping hose connection port at the other end, one or more liquid additive injection ports, and one or more liquid additives a fiber spray nozzle having a material hose connection;
(B) a fiber pumping hose;
(C) a pipping machine comprising a fiber inlet, a pipping device, a metering device, a motor and a fiber pumping tube;
(D) a blower;
(E) a hose for liquid additive;
(F) a liquid additive pump having an inlet and an outlet;
The fiber pressure-feeding hose (B) is connected to the fiber pressure-feeding hose connection port of the fiber spray nozzle (A), and the liquid additive hose (E) is connected to the liquid additive hose connection port,
The fiber pressure-feeding hose (B) is connected to one end of the fiber pressure-feeding pipe of the pulverizer (C), and the blower (D) is connected to the other end. A fiber pumping path is formed to the fiber injection port of the attachment nozzle (A),
The liquid additive hose (E) is connected to the outlet of the liquid additive pump (F), and the liquid additive supply source (G) communicates with the inlet of the liquid additive pump (F). A fiber spraying device comprising:
Furthermore,
(H) a pressure gauge capable of transmitting pressure data;
(I) a memory for an allowable pressure upper limit;
(J) a memory for the lower limit of allowable pressure;
(K) a computing device;
(L) a controller;
(M) an overpressure transmission device;
(N) having an underpressure transmission device;
The pressure gauge (H) is arranged in the fiber pumping route, and the pressure data P _m in the fiber pumping route measured by the pressure gauge (H) is transmitted to the arithmetic unit (K),
After transmitting the allowable pressure upper limit value data P _max stored in the allowable pressure upper limit value memory (I) to the arithmetic unit (K), when the following equation (1) is satisfied, the pressure excess transmission A transmission command is sent to the device (M), and a mechanism is provided to inform the surrounding people that the overpressure transmission device (M) is overpressure when the transmission command is received,
After transmitting the allowable pressure lower limit value data P _min stored in the allowable pressure lower limit value memory (J) to the arithmetic unit (K), when the following equation (2) is satisfied, the pressure shortage transmission A transmission command is sent to the device (N), and a mechanism is provided to inform people around that the pressure shortage transmission device (N) is underpressure when the transmission command is received,
The supply of fibers from the constant supply device of the paver (C) to the fiber pumping pipe is increased by an increase command from the control device (L),
A fiber spraying device characterized in that the supply of fibers from the constant supply device of the cotton combing machine (C) to the fiber pumping pipe is suppressed by a suppression command from the control device (L).
P _m >P _max (1)
P _m <P _min (2)
(2) further comprising (O) a target pressure upper limit value memory and/or (P) a target pressure lower limit value memory;
Furthermore,
(Q) Equipped with a pressure normal transmission device,
The target pressure upper limit value data P _Tmax stored in the target pressure upper limit value memory (O) and the target pressure lower limit value data P _Tmin stored in the target pressure lower limit value memory (P) are converted into the arithmetic unit ( K), and when the following formula (3) is obtained,
A normal state transmission command from the control device (L) is sent to the normal pressure transmission device (Q). The fiber spraying device according to the above (1), characterized in that it comprises a mechanism for informing surrounding people that it is within the target range.
_{PTmin≤Pm≤PTmax ( 3} )
(3) Using the fiber spraying device of (1) or (2) above, the fibers are put into the fiber inlet of the defibering machine (C) and sprayed from the fiber spray nozzle of the fiber spray nozzle (A). Then, the liquid additive is supplied from the liquid additive supply source (G) and is sprayed from the fiber injection port of the fiber spray nozzle (A), so that the combined mixture of the fiber and the liquid additive is applied to the object to be coated. In the fiber spraying method of spraying,
A person who learns from the excess pressure transmission device (M) that the pressure in the fiber pumping path has exceeded the allowable pressure upper limit and is in excess pressure causes the control device (L) to issue a suppression order, and the suppression The command suppresses the supply of fibers from the constant supply device of the peptizer (C) to the fiber pumping pipe,
A person who learns from the pressure shortage transmission device (N) that the pressure in the fiber pumping path is below the allowable pressure lower limit value and is in a pressure shortage causes the control device (L) to issue an increase command to increase the pressure. A method of blowing fibers, characterized in that, on command, the supply of fibers from the metering device of said peptizer (C) to the fiber pumping pipe is increased.
(4) A person who knows that the pressure in the fiber pumping path is within the target pressure range from the target pressure lower limit value to the target pressure upper limit value by the normal pressure transmission device (Q) A holding command is issued from, and the amount of fiber supplied per unit time from the constant supply device of the peptizer (C) to the fiber pumping pipe (hereinafter sometimes simply referred to as "supply amount"). ) is kept constant.

The present invention is intended to solve the above problems, and according to the present invention, pulsation in the fiber pressure-feeding path is difficult to occur, and even if the supply of fibers such as rock wool to the fiber pressure-feeding path is stopped, the fiber pressure-feeding can be performed. A fiber composition produced by a dry method or a semi-dry method, in which it is difficult for the fine particles of fibers remaining in the path to continue to be ejected from the fiber discharge port, and it is difficult for the fibers to clog the fiber pumping path. A fiber spraying device for use in the spraying method is obtained.

In addition, according to the present invention, in a fiber spraying device used for a fiber composition spraying method by a dry method or a semi-dry method, the occurrence of pulsation in the fiber pumping path is suppressed, and fibers such as rock wool Even if the supply of the fiber to the fiber pressure-feeding route is stopped, the fine particles of the fibers remaining in the fiber pressure-feeding route are suppressed from continuing to be ejected from the fiber discharge port, and the fibers are prevented from It is possible to suppress the occurrence of clogging and improve workability. By suppressing the pulsation, the mixing ratio of the fibers and the liquid additive is stabilized, and the quality of the formed fiber composition is stabilized. By suppressing the ejection of fine particles, the generation of dust is suppressed and the working environment is improved. By suppressing clogging in the fiber pumping path, construction is completed without interruption.

FIG. 1 is a schematic diagram of a fiber blowing device of the present invention. FIG. 2 is a diagram showing the relationship between the amount of fiber supplied into the fiber pumping path for each hose length, the hose pressure, and the transport speed. FIG. 3 is an image diagram of the pressure in the fiber pumping path. FIG. 4 is an image diagram of the pressure in the fiber pumping path.

The fiber spraying device of the present invention is
(A) A fiber passage having a fiber injection port at one end and a fiber pumping hose connection port at the other end, one or more liquid additive injection ports, and one or more liquid additive hose a fiber spray nozzle having a connection port;
(B) a fiber pumping hose;
(C) a pipping machine comprising a fiber inlet, a pipping device, a metering device, a motor and a fiber pumping tube;
(D) a blower;
(E) a hose for liquid additive;
(F) a liquid additive pump having an inlet and an outlet;
The fiber pressure-feeding hose (B) is connected to the fiber pressure-feeding hose connection port of the fiber spray nozzle (A), and the liquid additive hose (E) is connected to the liquid additive hose connection port,
The fiber pressure-feeding hose (B) is connected to one end of the fiber pressure-feeding pipe of the pulverizer (C), and the blower (D) is connected to the other end. A fiber pumping path is formed to the fiber injection port of the attachment nozzle (A),
The liquid additive hose (E) is connected to the outlet of the liquid additive pump (F), and the liquid additive supply source (G) communicates with the inlet of the liquid additive pump (F). A fiber spraying device comprising:
Furthermore,
(H) a pressure gauge capable of transmitting pressure data;
(I) a memory for an allowable pressure upper limit;
(J) a memory for the lower limit of allowable pressure;
(K) a computing device;
(L) a controller;
(M) an overpressure transmission device;
(N) having an underpressure transmission device;
The pressure gauge (H) is arranged in the fiber pumping route, and the pressure data P _m in the fiber pumping route measured by the pressure gauge (H) is transmitted to the arithmetic unit (K),
After transmitting the allowable pressure upper limit value data P _max stored in the allowable pressure upper limit value memory (I) to the arithmetic unit (K), when the following equation (1) is satisfied, the pressure excess transmission A transmission command is sent to the device (M), and a mechanism is provided to inform the surrounding people that the overpressure transmission device (M) is overpressure when the transmission command is received,
After transmitting the allowable pressure lower limit value data P _min stored in the allowable pressure lower limit value memory (J) to the arithmetic unit (K), when the following equation (2) is satisfied, the pressure shortage transmission A transmission command is sent to the device (N), and a mechanism is provided to inform people around that the pressure shortage transmission device (N) is underpressure when the transmission command is received,
The supply of fibers from the constant supply device of the paver (C) to the fiber pumping pipe is increased by an increase command from the control device (L),
It is characterized in that the supply of fibers from the fixed amount supply device of the cotton combing machine (C) to the fiber pumping pipe is suppressed by the suppression command from the control device (L).
_Pm > _Pmax (1)
_Pm < _Pmin (2)

The fibers in the present invention refer to granular fibers or short fibers, or granular fibers or short fibers blended with a binder such as cement and dry-mixed (however, the bulk of the fiber exceeds the bulk of the binder). . Here, the bulk of the binder is the value obtained by dividing the mass of the binder contained by the bulk density of the binder, and the bulk of the fiber (granular fiber or short fiber) is the volume of the fiber (granular fiber or short fiber). A value obtained by dividing the mass by the bulk density of the fiber. When short fibers are used as the fibers in the present invention, those with a fiber length of 60 mm or less are preferably used, and those with a fiber length of 30 mm or less are more preferably used. When the fiber length is long, the cross-sectional area of the fiber pressure-feeding hose (B), the fiber passage of the fiber spray nozzle (A), and the fiber pressure-feeding pipe of the cotton breaker (C), that is, the cross-sectional area of the fiber pressure-feeding route is large. The fiber pressure feeding hose (B) and the fiber spraying nozzle (A) are large and heavy, making it difficult to carry out the spraying operation.
The granular fiber is a fiber lump having a diameter of several mm to several cm, preferably a fiber lump having a diameter of 5 mm to 5 cm. In the case of mineral fibers such as rock wool, one or two or more of the processes of crushing, defusing, cutting, classifying (e.g., sieving), and granulating raw cotton that is just a collection of fiberized mineral fibers It is granular cotton obtained through a combination of Granular cotton of rock wool includes fine cotton of rock wool and fine cotton. (trade name), Taiheiyo Material Co., Ltd. "Taiheiyo Mineral Fiber Granular Cotton" (trade name), and other commercially available rock wool granular cotton, fine cotton, and fine cotton can be suitably used. When such granular rock wool is used, heat is hardly transmitted to the substrate covering the rock wool, and heat insulating properties, fire resistance or non-combustibility can be obtained, and sound absorption can also be obtained.

Examples of the material of the fiber in the present invention include inorganic fibers, organic fibers, and mixtures of inorganic fibers and organic fibers. Inorganic fibers include, for example, metal fibers, carbon fibers, rock wool, glass wool, and ceramic wool. Organic fibers include, for example, vegetable fibers such as cellulose fibers and jute fibers, animal fibers such as wool and feathers, and the like. synthetic fibers such as polypropylene fibers and polyvinyl alcohol fibers; Even if the wool is exposed to 800° C. or higher, it is more preferable because it can maintain its shape without being melted and is excellent in terms of heat resistance or fire resistance. Here, rock wool is a material (mineral fiber) obtained by rapidly cooling a material mainly composed of rock melted in a melting furnace, blast furnace slag, or the like. For example, it also includes slag wool manufactured from materials mainly composed of blast furnace slag.

Examples of liquid additives in the present invention include water, aqueous solutions, inorganic slurries, resin emulsions, inorganic-containing resin emulsions (resin-containing inorganic slurries), and mixtures of two or more of these. More preferred examples include water, an aqueous solution, a slurry of hydraulic inorganic powder such as cement or blast furnace slag powder, an inorganic powder such as cement or blast furnace slag powder containing Al ₂ O ₃ , CaO and/or SiO ₂ in its composition, and silicic acid. Slurries containing alkali and water, synthetic resin emulsions (polymers), and cement-containing resin emulsions (resin-containing cement slurries) can be mentioned. Examples of the resin emulsion used for the liquid additive include emulsions of synthetic rubber (e.g., styrene/butadiene copolymer, chloroprene rubber, acrylonitrile/butadiene copolymer, methyl methacrylate/butadiene copolymer, etc.), and natural rubber emulsions. Emulsions, synthetic resins (e.g., polyolefins (e.g., polyethylene, polypropylene, etc.), polychloropyrene, polyacrylic acid esters, styrene-acrylic copolymers, all-acrylic copolymers, vinyl acetate resins (e.g., polyvinyl acetate, acetic acid Vinyl-Acrylic Copolymer, Vinyl Acetate-Acrylic Ester Copolymer, Modified Vinyl Acetate, Ethylene-Vinyl Acetate Copolymer, Ethylene-Vinyl Acetate-Vinyl Chloride Copolymer, Vinyl Acetate-Vinyl Versatate Copolymer, Acrylic Emulsions of vinyl acetate-Veova (trade name of vinyl t-decanoate) copolymers, unsaturated polyester resins, polyurethane resins, alkyd resins, epoxy resins, etc.), bituminous materials (e.g., asphalt, rubber asphalt, etc.) ) emulsions. Due to the viscosity of the liquid additive itself, the liquid additive is expected to play a role as an aggregating agent for aggregating fibers together. Therefore, hydraulic inorganic powder slurries such as cement slurries, slurries containing inorganic powders containing Al ₂ O ₃ , CaO and/or SiO ₂ such as cement or blast furnace slag powders in their compositions, alkali silicates and water, and synthetic Resin emulsions (polymers) as well as cement-containing resin emulsions (resin-containing cement slurries) are particularly preferred. This is because hardening and/or evaporation of the dispersion medium binds the fibers together more firmly.

The fiber spray nozzle (A) in the present invention comprises a fiber passage having one end serving as a fiber injection port and the other end serving as a fiber pressure feeding hose connection port, one or more liquid additive injection ports, and one Alternatively, it is equipped with a plurality of hose connection ports for liquid additives. The fiber passage provided in the fiber spray nozzle is preferably formed by a fiber conduit, the cavity inside the fiber conduit is the fiber passage, and one end of the opening of the fiber conduit is the fiber injection port. , and the opening at the other end is the fiber pumping hose connection port. The material of the fiber conduit is not particularly limited, and is preferably one or a combination of two or more selected from metals, resins such as rubber, ceramics, glass, stone, wood and bamboo. From the standpoint of ease of application and toughness, it is more preferable to use one or a combination of two or more selected from metals, resins such as rubber, and ceramics.

The jet nozzle for the liquid additive provided in the fiber spray nozzle (A) used in the present invention has one or more on the wall forming the fiber passage, inside the fiber passage and/or on the outer periphery of the fiber jet port. Arrangement is preferred. When one injection port for the liquid additive is arranged inside the fiber passage, it is preferable to arrange the flocculant injection port in the center axis of the fiber passage, and the wall forming the fiber passage or the fiber injection port When arranging the injection port for the liquid additive on the outer circumference of It is preferable to arrange injection ports for the liquid additive so that the central axes of the flow of the liquid additive intersect.

The material of the fiber pressure-feeding hose (B) and the liquid additive material hose (E) used in the present invention is not particularly limited, and may be one or a combination of two or more selected from metals and resins such as rubber. Although it can be exemplified as a preferable one, a resin-made one is more preferable because it is easy to handle, and a resin-made pressure-resistant hose is preferable because internal pressure is applied to both hoses.

The pulverizer (C) in the present invention comprises a fiber inlet, a pulverizer, a metering device, a motor and a fiber pumping pipe. There may be more than one fiber inlet, peptizer, metering device, motor and fiber pumping tube. Fibers introduced into the fiber inlet are unwound by the pruning device and then sent to the fixed amount supply device, and a fixed amount of fibers per unit time is supplied to the fiber pumping pipe. The puffing device has one or more protrusions (e.g., I-shaped, L-shaped, plate-shaped, needle-shaped protrusions, etc.), blades, blades or chains attached or formed on the rotating shaft, It has a structure in which the rotation shaft is rotated by driving a motor provided in the cotton combing machine (C).

The shape and material of the fiber inlet of the pulverizing machine (C) in the present invention is not limited as long as it has a structure that allows the fibers to be put into the pulverizing machine (C). This is preferred because the fibers can be fed into the peptizer (C).

The quantitative feeding device of the peptizer (C) in the present invention may be any device as long as it can supply fibers in a fixed amount, and preferable examples thereof include a screw feeder, a belt feeder and a rotary feeder. A rotary feeder is preferable for supplying a fixed amount of fibers to the pressure-feeding pipe because it is easy to supply the fibers to the fiber pressure-feeding pipe in a closed state. The quantitative feeding device of the pulverizer (C) has a structure in which a screw, roller, rotor, etc. rotate by driving the motor provided in the pulverizer (C), and Accordingly, the number of revolutions per unit time of screws, rollers, rotors, etc. varies.

The blower in the present invention is not particularly limited as long as it can apply pressure to the fiber pumping path and supply air, but a ring blower and/or a roots blower are preferable. The blower is connected to the fiber pumping pipe of the combing machine (C). The connection referred to in the present invention includes not only direct connection but also indirect connection except for the case where the same effect as direct connection cannot be obtained. The blower in the present invention may be part of the combing machine (C).

The liquid additive pump (F) used in the present invention has an inlet and an outlet. The inlet of the liquid additive pump (F) communicates with the liquid additive supply source (G), and the outlet of the liquid additive pump (F) is connected to the liquid additive hose (E). ing. The liquid additive pump (F) used in the present invention may be of any type as long as it can pump the liquid additive. For example, reciprocating pumps (e.g., diaphragm type pumps, piston type pumps, plunger pumps, etc.), rotary pumps (e.g., screw type pumps, gear type pumps, etc.), centrifugal pumps (e.g., turbine pumps, volute pumps, etc.), squeeze type pumps A pump etc. are mentioned. Preferred examples of the liquid additive pump (F) used in the present invention include a reciprocating pump, a rotary pump, and a squeeze pump, since the liquid additive can be easily pumped at a constant rate.

Preferred examples of the liquid additive supply source (G) in the present invention include a liquid additive storage tank in which the liquid additive is stored and a liquid additive supply plug. When the liquid additive is water, the liquid additive supply tap is, for example, a water tap (faucet). The inlet of the liquid additive pump (F) and the liquid additive supply source (G) are often connected via a hose (pipe).

The pressure gauge (H) in the present invention is not particularly limited as long as it can transmit and transmit the measured pressure data Pm in the fiber pumping path to the _computing device (K). The pressure gauge is arranged in the fiber pressure-feeding route, but placing it in the fiber pressure-feeding pipe of the pulverizer (C) or in the fiber pressure-feeding route within 10 m from the fiber pressure-feeding pipe reduces the effect of pressure loss. This is preferable because it is almost negligible, and the influence of failure occurrence in the fiber pumping route is likely to appear as pressure fluctuation. The pressure gauge (H) may be placed directly on the fiber pressure-feeding pipe or fiber pressure-feeding hose (B) of the pulverizer (C), or may be placed on a metal pipe such as a steel pipe and then placed on the peptizer (C). Alternatively, the exchange may be arranged in the fiber pressure-feeding route by sandwiching the replacement with the fiber pressure-feeding pipe and the fiber pressure-feeding hose (B), or two fiber pressure-feeding hoses (B).

The control device (L) in the present invention may be of any mechanism as long as it can control the supply of fibers from the constant supply device of the peptizer (C) to the fiber pumping pipe. For example, a method of controlling the voltage or frequency of the motor driving the metering device of the cotton combing machine (C), or a method of driving the metering device of the cotton combing machine (C) via a gear device (gearbox). A preferred example is a system that adjusts the gear ratio of the gear device when the vehicle is on.

The allowable pressure upper limit value data P _max is stored in the allowable pressure upper limit value memory (I) in the present invention. Allowable pressure lower limit value data _Pmin is stored in the allowable pressure lower limit value memory (J). The allowable pressure upper limit value data P _max and allowable pressure lower limit value data P _min are the hose length and routing conditions (arrangement conditions) of the fiber pumping hose (B), and the air blower when fiber is not supplied to the fiber pumping pipe. It may be determined from the construction conditions such as the wind speed, the target discharge amount of the fiber per unit time (the amount of fiber supplied to the fiber pumping pipe), etc., or the fiber to the fiber pumping pipe may be tested before this construction. is supplied and jetted (discharged) from the fiber injection port of the fiber spray nozzle (A), and there is no pulsation or clogging in the fiber pumping path and no large fluctuations in the pressure in the fiber pumping path. It may be determined from the pressure data _Pm in the fiber pumping path measured by the pressure gauge (H) at that time. In addition, before this construction, the amount of fiber supplied to the fiber pressure-feeding pipe per unit time was changed, and the fiber was experimentally supplied to the fiber pressure-feeding pipe and injected from the fiber injection port of the fiber spray nozzle (A) ( discharge), and confirmed that no pulsation or clogging occurred in the fiber pumping route and that there was no large fluctuation in the pressure inside the fiber pumping route, and the pressure gauge (H) at that time measured The maximum value of the pressure data Pm in the fiber pumping path may be set as the _allowable pressure upper limit data _Pmax , and the minimum value of the pressure data _Pm in the fiber pumping path may be set as the allowable pressure lower limit data _Pmin .

In the present invention, the pressure data P _m in the fiber pumping path measured by the pressure gauge (H) is transmitted to the arithmetic unit (K), and the upper limit of allowable pressure stored in the memory for upper limit of allowable pressure (I) After transmitting the value data P _max to the arithmetic device (K), when the following equation (1) is satisfied, a transmission command is sent to the overpressure transmission device (M), and when the transmission command is received, the pressure The excess transmission device (M) is equipped with a mechanism to inform surrounding people of excess pressure.
_Pm > _Pmax (1)
As a mechanism for informing surrounding people that the overpressure transmission device (M) has an excess pressure, It is a mechanism to inform humans. Preferred examples of the mechanism for visually notifying surrounding people include a display device such as a liquid crystal display, a rotating light such as a red light, and a display lamp. In addition, as a mechanism for audibly notifying surrounding people, a warning device such as a buzzer or a whistle, a bone conduction device such as a bone conduction earphone, or a device for playing music or voice are preferable examples. Moreover, a vibrator is a preferable example of a mechanism for informing surrounding people by a tactile sensation.

In the present invention, the pressure data P _m in the fiber pumping path measured by the pressure gauge (H) is transmitted to the arithmetic unit (K), and the lower limit of allowable pressure stored in the memory for lower limit of allowable pressure (J) After transmitting the value data P _min to the calculation device (K), when the following equation (2) is satisfied, a transmission command is sent to the pressure shortage transmission device (N), and when the transmission command is received, the pressure It has a mechanism to inform people around that the under pressure transmission device (N) is under pressure. The underpressure transmission device (N) is a device having a transmission mechanism similar to the overpressure transmission device (M), and the overpressure transmission device (M) may also serve as the underpressure transmission device (N). .
_Pm < _Pmin (2)

The present invention further comprises (O) a target pressure upper limit value memory and/or (P) a target pressure lower limit value memory, and (O) the target pressure upper limit value stored in the target pressure upper limit value memory. After transmitting the value data P _Tmax and (P) the target pressure lower limit value data P _Tmin stored in the target pressure lower limit value memory to (K) the arithmetic unit, when the following expression (3) is satisfied, the control A normal state transmission command from the device (L) is sent to the normal pressure transmission device (Q), and the normal pressure transmission device (Q) that has received the normal state transmission command detects that the pressure in the fiber pumping path is within the target range. It is preferable to have a mechanism for notifying surrounding people of something. The normal pressure transmission device (Q) is a device having a transmission mechanism similar to the over pressure transmission device (M) and the under pressure transmission device (N), and the over pressure transmission device (M) and/or the under pressure transmission device (Q) It may also serve as the device (N).
_{PTmin≤Pm≤PTmax ( 3} )

Target pressure upper limit value data P _Tmax is stored in the target pressure upper limit value memory (O) in the present invention. Target pressure lower limit value data P _Tmin is stored in the target pressure lower limit value memory (P). Target pressure upper limit value data P _Tmax and target pressure lower limit value data P _Tmin are similar to allowable pressure upper limit value data P _max and allowable pressure lower limit value data P _min , depending on the length of the fiber pressure feeding hose (B) and the handling conditions ( arrangement conditions), the wind speed of the blower when fiber is not supplied to the fiber pumping pipe, and the target discharge amount of fiber per unit time (the amount of fiber supplied to the fiber pumping pipe). Alternatively, fibers may be supplied to the fiber pressure-feeding pipe on a trial basis before this construction, and injected (discharged) from the fiber injection port of the fiber spray nozzle (A) to prevent pulsation and clogging in the fiber pressure-feeding route. After confirming that the pressure in the fiber pumping path has not occurred and that the pressure in the fiber pumping path has not changed significantly, the pressure data _Pm in the fiber pumping path measured by the pressure gauge (H) at that time good. In addition, before this construction, the amount of fiber supplied to the fiber pressure-feeding pipe per unit time was changed, and the fiber was experimentally supplied to the fiber pressure-feeding pipe and injected from the fiber injection port of the fiber spray nozzle (A) ( discharge), and confirmed that no pulsation or clogging occurred in the fiber pumping route and that there was no large fluctuation in the pressure inside the fiber pumping route, and the pressure gauge (H) at that time measured The maximum value of the pressure data P _m in the fiber pumping path may be set as the target pressure upper limit data P _Tmax , and the minimum value of the pressure data P _m in the fiber pumping path may be set as the target pressure lower limit data P _Tmin . The target pressure upper limit data P _Tmax and the target pressure lower limit data P _Tmin are set within the range given by the following formula (4) and the range given by the following formula (5), respectively. Preferably, the pressure in the fiber pumping path can be easily set within the range from the lower limit of the _allowable pressure to the upper limit of the allowable pressure. The value data P _Tmin are set within the range of the following equation (7). The target pressure upper limit data P _Tmax and the target pressure lower limit data P _Tmin may be the same value. In this case, the target pressure upper limit value memory (O) may also serve as the target pressure lower limit value memory (P).
P _min ≤ P _Tmax ≤ P _max (4)
P _min ≤ P _Tmin ≤ P _max (5)
P _min < P T _max < P _max (6)
_Pmin < _Ptmin < _Pmax (7)

The pressure data _{Pm in the fiber pumping path measured by the pressure gauge (H) is transmitted to the arithmetic unit (K), and the allowable pressure upper limit value data Pmax stored} in the allowable pressure upper limit memory (I) is transmitted to the arithmetic unit (K), and when the above formula (1) is satisfied, a transmission command is sent to the overpressure transmission device (M), and when the transmission command is received, the overpressure transmission device ( M) is overpressured to people in the surroundings (e.g., the person operating the fiber blasting device of the present invention and/or the person monitoring the fiber blasting device of the present invention) and notifying them. The person who receives it recognizes that the pressure in the fiber pumping path exceeds the allowable upper pressure limit. The person who recognizes that the pressure is overpressure directly or the person who operates the fiber spraying device of the present invention or who is informed by this person that the pressure is overpressure, monitors the fiber spraying device of the present invention. A person who is doing so operates the control device (L) to issue a restraining order. This suppression order suppresses the supply of fibers from the metering device of the peptizer (C) to the fiber pumping pipe. As a result, the pressure data _Pm in the fiber pumping path becomes smaller. Then, the above formula (1) is no longer satisfied. Then, the transmission command is not transmitted, and the overpressure transmission device (M) is not transmitted. If the transmission mechanism provided in the excess pressure transmission device (M) is a display device, the display of excess pressure will disappear, if it is a rotating light or indicator lamp, it will go off, if it is an alarm device, the alarm will go off, and if it is a vibrator. stops vibrating.

Furthermore, when the supply of fibers from the constant supply device of the peptizer (C) to the fiber pressure-feeding pipe is suppressed, the pressure data Pm in the fiber pressure- _feeding path becomes a smaller value. The fiber spraying apparatus of the present invention comprises a target pressure upper limit value memory (O), a target pressure lower limit value memory (P), and a pressure normal transmission device (Q), and the target pressure upper limit value memory (O ) and the target pressure lower limit value data P _Tmin stored in the target pressure lower limit value memory (P) are _transmitted to the arithmetic unit (K), and then the above When the equation (3) is satisfied, the pressure normal transmission device (Q) detects that the pressure is within the target range by surrounding people (for example, the person operating the fiber spraying device of the present invention and / or The person monitoring the fiber spraying apparatus of the present invention will be notified, and the person receiving the notification will recognize that the pressure in the fiber pumping path is within the target range. A person who directly recognizes that the pressure is within the target range or a person who operates the fiber spraying apparatus of the present invention or who is informed by this person that the pressure is within the target range. The person monitoring the fiber spraying device operates the controller (L) to issue a hold command. By this holding instruction, the amount of fiber supplied from the metering device of the peptizer (C) to the fiber pumping pipe per short period of time is held. As a result, the pressure data _Pm in the fiber pumping path becomes constant.

The pressure data Pm in the fiber pumping path measured by the pressure gauge (H) is transmitted to the _arithmetic device (K), and the allowable pressure lower limit value data _Pmin stored in the allowable pressure lower limit value memory (J) is transmitted to the arithmetic unit (K), and when the above equation (2) is satisfied, a transmission command is sent to the underpressure transmission device (N), and when the transmission command is received, the underpressure transmission device (N ) is under pressure to the people around (for example, the person operating the fiber spraying device of the present invention and/or the person monitoring the fiber spraying device of the present invention) and receiving the notification A human being who has been trained recognizes that the pressure in the fiber pumping path is below the lower limit of the allowable pressure, that is, the pressure is insufficient. The person who recognizes the pressure shortage directly or the person operating the fiber spraying device of the present invention who is informed of the pressure shortage by this person or monitors the fiber spraying device of the present invention. A person operating the control device (L) issues an increase command. This increase command increases the supply of fiber from the metering device of the peptizer (C) to the fiber pumping tube. As a result, the pressure data _Pm in the fiber pumping path increases. Then, the above formula (2) is no longer satisfied. Then, the transmission command will not be transmitted, and the underpressure transmission device (N) will not be transmitted.

Furthermore, when the supply of fibers from the constant supply device of the peptizer (C) to the fiber pumping pipe increases, the pressure data _Pm in the fiber pumping path becomes a larger value. The fiber spraying device of the present invention comprises a target pressure upper limit value memory (O), a target pressure lower limit value memory (P) and a pressure normal transmission device (Q), and the target pressure lower limit value memory (P ) and the target pressure lower limit value data P _Tmin stored in the target pressure lower limit value memory (P) are _transmitted to the arithmetic unit (K), and then the above When the equation (3) is satisfied, the pressure normal transmission device (Q) detects that the pressure is within the target range by surrounding people (for example, the person operating the fiber spraying device of the present invention and / or The person monitoring the fiber spraying apparatus of the present invention will be notified, and the person receiving the notification will recognize that the pressure in the fiber pumping path is within the target range. A person who directly recognizes that the pressure is within the target range or a person who operates the fiber spraying apparatus of the present invention or who is informed by this person that the pressure is within the target range. The person monitoring the fiber spraying device operates the controller (L) to issue a hold command. By this holding command, the amount of fiber supplied from the metering device of the peptizer (C) to the fiber pumping pipe per unit time is held. As a result, the pressure data _Pm in the fiber pumping path becomes constant.
By operating the control device (L) as described above, the pressure data _Pm in the fiber pumping path is set within the range from the target pressure lower limit value data _PTmin to the target pressure upper limit value data _PTmax , that is, the allowable pressure lower limit value. Since it can be within the range of the allowable pressure upper limit data P _max from the data P _min , it is difficult for pulsation to occur in the fiber pressure feeding route, and the supply of fibers such as rock wool to the fiber pressure feeding route is stopped. Furthermore, it is difficult for the fine particles of the fibers remaining in the fiber pumping path to continue to be ejected from the fiber discharge port, and it is difficult for the fibers to clog the fiber pumping path.

In the fiber spraying method of the present invention, the fiber spraying device is used, and the fibers are fed into the fiber inlet of the defibering machine (C) and sprayed from the fiber spray nozzle of the fiber spraying nozzle (A). , the liquid additive is supplied from the liquid additive supply source (G) and is sprayed from the fiber injection port of the fiber spray nozzle (A) to spray a combined mixture of the fibers and the liquid additive onto the object to be coated. In the fiber spraying method to attach,
A person who learns from the excess pressure transmission device (M) that the pressure in the fiber pumping path exceeds the allowable pressure upper limit value and is in excess pressure causes the control device (L) to issue a suppression order, and the suppression The command suppresses the supply of fibers from the constant supply device of the peptizer (C) to the fiber pumping pipe,
A person who has learned from the pressure shortage transmission device (N) that the pressure in the fiber pumping path has fallen below the allowable pressure lower limit value and is in a pressure shortage causes the control device (L) to issue an increase command, and the increase is performed. It is characterized in that the supply of fibers from the metering device of the peptizer (C) to the fiber pumping pipe is increased on command.

A person who has learned from the normal pressure transmission device (Q) that the pressure in the fiber pumping path is within the target pressure range from the target pressure lower limit value to the target pressure upper limit value issues a holding command from the control device (L). is issued, and the amount of fiber supplied per unit time from the constant supply device of the peptizer (C) to the fiber pumping pipe is kept constant by the holding command.

EXAMPLES The present invention will be described below based on examples, but the present invention is not limited to the examples. FIG. 1 shows a schematic diagram of an example of the fiber spraying device of the present invention. The fiber spraying device 10 includes a fiber spraying nozzle 1, a fiber pressure-feeding hose 9, a pruning machine 20, a blower 14, a steel pipe equipped with a pressure gauge 2 so as to measure the pressure inside the pipe, and a liquid additive. material hose 6, liquid additive material pump 7, conversion device 31, arithmetic device 30, allowable pressure upper limit value memory 32, allowable pressure lower limit value memory 33, target pressure upper limit value memory 34 , a target pressure lower limit value memory 35, a control device 40, an excess pressure transmission device (display device) 50, an underpressure transmission device (display device) 51, and a normal pressure transmission device (display device) 53. ing.

The fiber spray nozzle 1 includes a fiber conduit having one end of an opening serving as a fiber injection port and the other opening serving as a fiber pressure-feeding hose connection port, and liquid addition to a central axis inside the fiber conduit (fiber passage). One injection port 3 for material is arranged. The injection port 3 for the liquid additive is one end of the opening of the metal pipe, and the opening at the other end of the metal pipe protrudes outside the fiber conduit, and serves as a hose connection port for the liquid additive. A hose 6 is connected. The other end of the liquid additive hose 6 is connected to the discharge port of the liquid additive pump 7 . A suction hose is connected to the inlet of the liquid additive pump 7 , and the other end of the suction hose is inserted into the liquid additive 4 stored in the liquid additive storage tank 8 .

A fiber pressure-feeding hose 9 is connected to a fiber pressure-feeding hose connection port of the fiber spray nozzle 1, and the other end of the fiber pressure-feeding hose 9 is installed so that a pressure gauge 2 can measure the internal pressure. connected to an opening in a metal tube that The other end of the metal tube is connected to the fiber pumping tube 26 of the paver 20 . The other end of the fiber pumping pipe 26 is connected to a blower (roots blower) 14 . The blower (roots blower) 14, the fiber pressure-feeding pipe 26 of the defibering machine 20, the metal pipe on which the pressure gauge 2 is installed, the fiber pressure-feeding hose 9, and the fiber conduit of the fiber spraying nozzle 1 are in communication with each other. A fiber pressure-feeding path is formed from the fiber pressure-feeding pipe 26 of the machine 20 to the fiber conduit (fiber injection port) of the fiber spraying nozzle 1 .

The cotton removing machine 20 includes a fiber pumping pipe 26, a fiber input port consisting of a hopper 23, a first cotton removing section 21 (cotton removing device), a second cotton removing section 22 (cotton removing device), and a screw feeder 24 (quantitative feeder). device), a rotary feeder 25 (quantitative feeding device), and a motor (not shown). The first unfibering section 21 has a plurality of L-shaped steel rods on a rotating shaft, and the fibers thrown into the hopper 23 when the L-shaped steel rods are rotated by rotating the rotating shaft by driving a motor. The fiber 11 is loosened by hitting the fiber 11 and falls onto the screw feeder 24. - 特許庁By rotating the screw feeder 24 driven by a motor, the loosened fibers are supplied to the second unfibering section 22 at a constant rate. The second unfibering section 22 has a structure in which a plurality of steel projections (I-shaped steel rods) are attached to a rotating shaft. The fibers sent to the second unfibering section 22 collide with the I-shaped steel rod rotating by the drive of the motor, and become fibers 5 which are further loosened. After entering the pocket formed by two flat plates welded to the rotary shaft of the rotary feeder 25 arranged under the second unfibering section 22, the granular fiber 5 is fed to the rotary shaft of the rotary feeder 25 by a motor. By rotating with the drive of , a fixed amount of fiber is supplied to the fiber pumping pipe 26 arranged below the rotary feeder 25 . In the case of a dry mixture in which the fibers are granular fibers such as mixed cotton or short fibers blended with a binder such as cement, the dry mixture finely divided by the granular fibers or short fibers is quantitatively supplied to the fiber pumping pipe 26.

The loosened fibers 5 quantitatively supplied to the fiber pressure-feeding pipe 26 are pressure-fed through the fiber pressure-feeding path to the fiber injection port of the fiber spray nozzle 1 by the air flow from the blower 14, and are ejected (discharged) from the fiber injection port. be done. On the other hand, after the liquid additive 4 stored in the liquid additive storage tank 8 is sucked by the liquid additive pump 7 , it passes through the liquid additive hose 6 to the fiber spray nozzle 1 . It is injected from the injection port 3 for the liquid additive provided, is joined and mixed with the disentangled fibers 5 injected (discharged) from the fiber injection port, and is sprayed on the object 13 to be coated. A fibrous layer consisting of the merged mixture is formed on the surface.

A pressure gauge 2 measures the pressure in the fiber pumping path. The hose length is set to 20 m, 40 m, and 60 m, and the mixed cotton (rock wool/cement mixed cotton) is used as the fiber, and the amount of supply per unit time to the fiber pumping pipe 26 (fiber pumping route) is changed to change the hose pressure (fiber The pressure in the pumping path) and the fiber discharge time were measured as shown below to determine the fiber conveying speed. The results are shown in FIG.

・Supply amount of blended cotton per unit time Remove the spray nozzle from the fiber pressure-feeding hose, attach a hemp bag to the end of the fiber pressure-feeding hose, blow out only the blended cotton for 30 seconds, and the mass of the material in the hemp bag at that time W was measured, and the supply amount S of the blended cotton per unit time was obtained by the following equation (8). The supply amount can be set by controlling the number of revolutions per unit time of the motor of the peptizer 20 based on a command from the control device 40 .
S=W/0.5 (8)

- Mixed cotton discharge time After stopping the rotation of the rotary feeder 25 of the pulverizing machine, that is, stopping the supply of the mixed cotton to the fiber pressure-feeding pipe 26, the rock wool granular fibers contained in the mixed cotton are completely discharged from the fiber pressure-feeding path. The time until the discharge of the mixed cotton was measured and defined as the discharge time t of the mixed cotton. Furthermore, the value obtained by dividing the length of the fiber pressure-feeding hose (hose length) L by the discharge time t was obtained as the conveying speed V using the following equation (9).
V=L/t (9)

From FIG. 2, when the amount of fiber (blended cotton) supplied to the fiber pumping pipe 26 (fiber pumping route) per unit time increases, the hose pressure (pressure in the fiber pumping route) increases and the conveying speed decreases. It turns out that it is a tendency. If the conveying speed is too low, there is a risk that the fibers will clog the fiber pumping path. Also, the amount of fiber (blended cotton) supplied to the fiber pumping pipe 26 (fiber pumping route) per unit time can be estimated from the hose pressure (the pressure in the fiber pumping route). If the hose pressure (the pressure in the fiber pumping path) is too high, the fibers tend to clog the fiber pumping path, pulsation tends to occur, and fine particles of the fiber tend to continue to be ejected from the fiber discharge port. Also, if the hose pressure (the pressure in the fiber pressure-feeding route) is too low, the amount of fiber (blended cotton) supplied to the fiber pressure-feeding pipe 26 (fiber pressure-feeding route) per unit time is too small, resulting in a long construction time. .

In the fiber _spraying device 10 shown in FIG. It can be sent to a memory 33 for lower limit value, a memory 34 for target pressure upper limit value, and a memory 35 for target pressure lower limit value. Before the main construction, the amount of fiber supplied to the fiber pressure-feeding pipe 26 per unit time is changed, and the fiber is supplied to the fiber pressure-feeding pipe 26 on a trial basis and injected (discharged) from the fiber injection port of the fiber spray nozzle 1. Then, it is confirmed that no pulsation or clogging occurs in the fiber pumping route and that the pressure inside the fiber pumping route does not change greatly. Four points of pressure data P _m in the fiber pumping path are collected and stored in the allowable pressure lower limit value memory 33, the target pressure lower limit value memory 35, the target pressure upper limit value memory 34, and the allowable pressure upper limit value memory 32 in ascending order of pressure. The feed can be defined as allowable pressure lower limit value data P _min , target pressure lower limit value data P _Tmin , target pressure upper limit value data P _Tmax , and allowable pressure upper limit value data P _max . Each data of allowable pressure lower limit value data P _min , target pressure lower limit value data P _Tmin , target pressure upper limit value data P _Tmax , and allowable pressure upper limit value data P _max may be numerically input, or the fiber spraying apparatus 10 Data recorded in a recording medium such as a read-only memory (ROM) or random access memory (RAM) provided in the device or a recording medium of an external device (for example, a server) may be read and used.

During the actual execution of fiber spraying, the pressure data P _m in the fiber pumping path measured by the pressure gauge 2 is sent to the computing device 30 via the conversion device 31 . Also, the allowable pressure upper limit value data P _max stored in the allowable pressure upper limit value memory 32 and the allowable pressure lower limit value data P _min stored in the allowable pressure lower limit value memory 33 are transmitted to the arithmetic device 30 . . It is checked in the arithmetic unit 30 whether or not the following formula (1) or the following formula (2) is satisfied.
_Pm > _Pmax (1)
_Pm < _Pmin (2)

When the above formula (1) holds, the pressure in the fiber pumping path is too high, that is, the amount of fiber supplied to the fiber pumping pipe 26 per unit time is too large, so the above formula (1) holds. A signal, or transmission command, is sent from the arithmetic unit 30 to the overpressure transmission device (display device) 50 . The overpressure transmission device (display device) 50 that has received the transmission command displays that the pressure is overpressure, so that people around (for example, the person operating the fiber spraying device 10 and/or the fiber blower (person monitoring the attachment device 10). As a display of excess pressure, for example, it is preferable to display the characters "overpressure" on the display, display the measured pressure value in red on the display, and turn on a red rotating light. Examples include: A person who receives the notification, that is, recognizes the display of the excess pressure, recognizes that the pressure in the fiber pumping path exceeds the allowable pressure upper limit.
A person who recognizes that the pressure is overpressure is directly or a person who operates the fiber spraying device 10 or a person who monitors the fiber spraying device 10 who is informed that the pressure is overpressure. operates the control device 40 to issue a restraining order and transmit it to the paver 20 .
Receiving the suppression command, the pulverizer 20 suppresses the number of revolutions per unit time of the motor, thereby reducing the number of revolutions per unit time of the rotary shafts of the screw feeder 24, the second peptization section 22 and the rotary feeder 25. is suppressed, reducing the amount of fiber supplied to the fiber pumping pipe 26 per unit time. The motor provided in the cotton puffing machine 20 directly receives the control command from the control device 40, and the rotation speed of the motor per unit time is suppressed, and the unit of rotation axis of each of the screw feeder 24, the second puffing section 22 and the rotary feeder 25 is controlled. The number of rotations per hour may be suppressed to reduce the amount of fiber supplied to the fiber pumping pipe 26 per unit time.
When the amount of fiber supplied to the fiber pumping pipe 26 per unit time decreases, the pressure in the fiber pumping path decreases, and the pressure data P _m in the fiber pumping path transmitted to the arithmetic device 30 decreases. ) ceases to hold. Then, the transmission command is not sent from the arithmetic device 30 to the overpressure transmission device (display device) 50, and the overpressure transmission device (display device) 50 stops displaying that the pressure is over.

When the above formula (2) holds, the pressure in the fiber pumping path is too low, that is, the amount of fiber supplied to the fiber pumping pipe 26 per unit time is too small, so the above formula (2) holds. A signal, or transmission command, is sent from the arithmetic unit 30 to the underpressure transmission device (display device) 51 . The lack of pressure transmission device (display device) 51 that has received the transmission command displays that the pressure is insufficient, and the surrounding people (for example, the person operating the fiber spraying device of the present invention and / or the book) Inform the person monitoring the inventive fiber blasting device). As a display of insufficient pressure, for example, displaying the characters "pressure insufficient" on the display, displaying the measured pressure value in yellow on the display, turning on a yellow rotating light, etc. are suitable examples. It is mentioned as. A person who receives the notification, that is, recognizes the indication that the pressure is insufficient, recognizes that the pressure in the fiber pumping path is below the lower limit of the allowable pressure.
A person who directly recognizes that the pressure is insufficient, or a person who operates the fiber spraying device 10 or a person who monitors the fiber spraying device 10 who is informed of the pressure shortage by this person, By operating the control device 40 , an increase command is issued and transmitted to the paver 20 .
Upon receiving the increase instruction, the pulverizer 20 increases the rotation of the motor per unit time, thereby increasing the number of rotations per unit time of the rotary shafts of the screw feeder 24, the second peptizer 22 and the rotary feeder 25. to increase the amount of fiber supplied to the fiber pumping pipe 26 per unit time. The motor provided in the peptizer 20 directly receives an increase command from the control device 40, suppresses the number of revolutions per unit time of the motor, and rotates the screw feeder 24, the second peptizer 22, and the rotary feeder 25. The number of rotations per hour may be increased to increase the amount of fiber supplied to the fiber pumping pipe 26 per unit time.
When the amount of fiber supplied to the fiber pumping pipe 26 per unit time increases, the pressure in the fiber pumping path increases, and the pressure data P _m in the fiber pumping path transmitted to the arithmetic device 30 increases. 2) does not hold. Then, the transmission command is not sent from the arithmetic device 30 to the underpressure transmission device (display device) 51, and the underpressure transmission device (display device) 51 stops indicating that the pressure is over.

By repeating these steps, the pressure in the fiber pumping path falls within the permissible range, that is, the amount of fiber supplied to the fiber pumping pipe 26 per unit time falls within the permissible range, and pulsation in the fiber pumping path is less likely to occur. Even if the supply of fibers such as rock wool to the fiber pumping path is stopped, it is difficult for the fine particles of the fibers remaining in the fiber pumping path to continue to be ejected from the fiber discharge port, and the fibers are Clogging in the pumping path is less likely to occur. FIG. 3 shows an image diagram of the pressure in the fiber pumping path.

Furthermore, the above formula (1) holds, a signal (transmission command) indicating that the above formula (1) holds is sent from the arithmetic device 30 to the overpressure transmission device (display device) 50, and the overpressure transmission that received the transmission command The device (display device) 50 displays the fact that the pressure is exceeded, informs the surrounding people, and receives the notification and recognizes that the pressure in the fiber pumping path is excessive, or the pressure from this person. The person who is informed of the excess operates the control device 40 to issue a restraining order and send it to the pulverizer 20, and the unit of the rotation axis of each of the screw feeder 24, the second pulverization section 22 and the rotary feeder 25 The number of rotations per hour is suppressed, and the amount of fibers supplied to the fiber pumping pipe 26 per unit time is reduced. Then, when the amount of fiber supplied to the fiber pumping pipe 26 per unit time decreases, the pressure in the fiber pumping path decreases, and the pressure data P _m in the fiber pumping path transmitted to the arithmetic unit 30 decreases. When (1) is no longer established, the transmission command is no longer sent from the computing device 30 to the overpressure transmission device (display device) 50, and the overpressure transmission device (display device) 50 no longer indicates that the pressure is over.
Further, when the amount of fiber supplied to the fiber pumping pipe 26 per unit time is reduced, the pressure inside the fiber pumping path is further lowered, and the pressure data _Pm in the fiber pumping path transmitted to the arithmetic device 30 becomes smaller.
The target pressure upper limit value data P _Tmax stored in the target pressure upper limit value memory 34 and the target pressure lower limit value data P _Tmin stored in the allowable target pressure lower limit value memory 35 are transmitted to the arithmetic device 30 . Confirm whether or not the following equation (3) is satisfied in the arithmetic unit 30 P _Tmin ≤ P _m ≤ P _Tmax (3)
When the pressure data P _m in the fiber pumping path satisfies the above formula (3), that is, when the pressure in the fiber pumping path falls within the target pressure range from the target pressure lower limit value to the target pressure upper limit value, the computing device 40 , a normal state transmission command is sent to the pressure normal transmission device (display device) 53 .
The normal pressure transmission device (display device) 53 receives the normal state transmission command, and the mechanism (display mechanism) that informs the surrounding people that the pressure in the fiber pumping path is within the target range operates to notify the surrounding people. . As an indication that the pressure in the fiber pumping path is within the target range, for example, display the characters "pressure normal" on the display, display the pressure measurement value in blue on the display, and turn on the blue lamp. A suitable example is to allow A person who receives the notification, that is, perceives the indication that the pressure in the fiber pumping path is within the target range, perceives that the pressure in the fiber pumping path is within the target range.
The operator of the fiber spraying device 10 or the fiber spraying device 10 who has been informed directly or by a person who has recognized that the pressure in the fiber pumping path is within the target range that the pressure is insufficient. A person who is monitoring operates the control device 40 to issue a hold command and transmit it to the paver 20 .
Upon receiving the holding command, the pulverizer 20 keeps the number of revolutions per unit time of the motor constant. The number of revolutions is kept constant, and the amount of fiber supplied to the fiber pumping pipe 26 per unit time is kept constant. A motor provided in the cotton puffing machine 20 directly receives a holding command from the control device 40 to keep the number of revolutions per unit time of the motor constant and to The number of revolutions per unit time may be kept constant, and the amount of fiber supplied to the fiber pumping pipe 26 per unit time may be kept constant.

When the amount of fiber supplied to the fiber pumping pipe 26 per unit time is maintained, the pressure in the fiber pumping path falls within the target range. If the amount of fiber supplied to the fiber pressure-feeding pipe 26 per unit time is maintained, pulsation is less likely to occur in the fiber pressure-feeding route, and even if the supply of fibers such as rock wool to the fiber pressure-feeding route is stopped, the fiber It is difficult for the fine particles of the fibers remaining in the pumping path to continue to be ejected from the fiber discharge port, and it is difficult for the fibers to clog the inside of the fiber pumping path. FIG. 4 shows an image diagram of the pressure in the fiber pumping path.

The present invention provides a fiber composition by spraying a fiber such as rock wool or a fiber composition that is employed for the purpose of imparting fire resistance, fire resistance, sound absorption, and/or heat insulation to a member of a structure, for example. It can be suitably used in construction to form a layer.

REFERENCE SIGNS LIST 1 fiber spray nozzle 2 pressure gauge 3 injection port for liquid additive 4 liquid additive 5 granular fiber 6 hose for pressure-feeding liquid additive 7 pressure-feeding pump for liquid additive 8 storage tank for liquid additive 9 hose for pressure-feeding fiber 10 Textile spraying device 11 fiber or fiber drying composition 12 fiber layer 13 composed of confluent mixture object to be coated 14 blower
20 Threading Machine 21 First Threading Section 22 Second Threading Section 23 Hopper 24 Screw Feeder 25 Rotary Feeder (Quantitative Feeder)
26 Fiber pumping pipe 30 Arithmetic device 31 Conversion device 32 Allowable pressure upper limit value memory 33 Allowable pressure lower limit value memory 34 Target pressure upper limit value memory 35 Target pressure lower limit value memory 40 Control device 50 Overpressure transmission device (display device) 51 Underpressure transmission device (display device)
53 pressure normal transmission device (display device)

Claims (4)

(A) A fiber passage having a fiber injection port at one end and a fiber pumping hose connection port at the other end, one or more liquid additive injection ports, and one or more liquid additive hose a fiber spray nozzle having a connection port;
(B) a fiber pumping hose;
(C) a pipping machine comprising a fiber inlet, a pipping device, a metering device, a motor and a fiber pumping tube;
(D) a blower;
(E) a hose for liquid additive;
(F) a liquid additive pump having an inlet and an outlet;
The fiber pressure-feeding hose is connected to the fiber pressure-feeding hose connection port of the fiber spray nozzle, and the liquid additive hose is connected to the liquid additive hose connection port,
The fiber pressure-feeding hose is connected to one end of the fiber pressure-feeding pipe of the cotton removing machine, and the air blower is connected to the other end thereof. is formed and
A fiber spraying device in which the liquid additive hose is connected to the discharge port of the liquid additive pump, and the liquid additive supply source communicates with the inlet of the liquid additive pump,
Furthermore,
(H) a pressure gauge capable of transmitting pressure data;
(I) a memory for an allowable pressure upper limit;
(J) a memory for the lower limit of allowable pressure;
(K) a computing device;
(L) a controller;
(M) an overpressure transmission device;
(N) having an underpressure transmission device;
The pressure gauge is arranged in the fiber pressure-feeding route, and the pressure data P _m in the fiber pressure-feeding route measured by the pressure gauge is transmitted to the arithmetic device,
After transmitting the allowable pressure upper limit value data P _max stored in the allowable pressure upper limit value memory to the arithmetic unit, when the following equation (1) is satisfied, a transmission command is sent to the overpressure transmission device. provided with a mechanism that informs surrounding people that the overpressure transmission device is overpressure when the transmission command is received,
After transmitting the allowable pressure lower limit value data P _min stored in the allowable pressure lower limit value memory to the arithmetic device, when the following equation (2) is satisfied, a transmission command is sent to the pressure shortage transmission device. provided with a mechanism that informs surrounding people that the pressure shortage transmission device is underpressure when the transmission command is received,
increasing the supply of fibers from the metering device of the paver to the fiber pumping pipe in response to an increase command from the control device;
A fiber spraying device P _m >P _max . )
_Pm < _Pmin (2) Furthermore,
(O) a target pressure upper limit memory and/or (P) a target pressure lower limit memory,
Furthermore,
(Q) Equipped with a pressure normal transmission device,
After transmitting the target pressure upper limit value data P _Tmax stored in the target pressure upper limit value memory and the target pressure lower limit value data P _Tmin stored in the target pressure lower limit value memory to the arithmetic unit, In the case of formula (3),
A normal state transmission command from the control device is sent to the normal pressure transmission device, and the normal pressure transmission device that has received the normal state transmission command detects that the pressure in the fiber pumping path is within the target range. 2. A fiber blowing device according to claim 1, further comprising a human notification mechanism.
_{PTmin≤Pm≤PTmax ( 3} ) Using the fiber spraying apparatus according to claim 1 or 2, fibers are fed into the fiber inlet of the defibering machine, and the liquid additive is supplied from the fiber spray nozzle of the fiber spray nozzle. A fiber spraying method in which a combined mixture of fibers and liquid additives is sprayed onto an object to be coated by supplying it from a source and spraying it from the fiber injection port of the fiber spraying nozzle,
A person who has learned from the excess pressure transmission device that the pressure in the fiber pumping path has exceeded the allowable pressure upper limit value is causing the control device to issue a suppression order, and according to the suppression order, the peptizer The supply of fibers from the constant supply device to the fiber pumping pipe is suppressed,
A person who has learned from the insufficient pressure transmitting device that the pressure in the fiber pumping path is below the lower limit of the allowable pressure and has insufficient pressure causes the control device to issue an increase command, and according to the increase command, the peptizer. A method for spraying fibers, characterized in that the supply of fibers from the metering device of claim 1 to the fiber pumping pipe is increased. A person who knows from the normal pressure transmission device that the pressure in the fiber pumping path is within the target pressure range from the target pressure lower limit value to the target pressure upper limit value causes the control device to issue a hold command, 4. The method of spraying fibers according to claim 3, wherein the amount of fibers supplied per unit time from the constant supply device of said peptizer to the fiber pumping pipe is kept constant by a holding command.

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