KR101584697B1 - The mixing equipment of self-extinguishing Expandable Polystyrene manufacture machine - Google Patents

Abstract

The present invention relates to a stirring apparatus for preparing a flame-retardant polystyrene foam, wherein the apparatus is used to prepare a flame-retardant polystyrene foam, of which the vulnerability to heat and fire is complemented, by individually coating a flame-retardant agent on an expanded polystyrene (EPS) or expanded particles, which are obtained by making polystyrene added with a foaming gas, such as butane or pentane, into spherical particles, followed by heating and foaming, and more specifically, to a stirring apparatus for preparing a flame-retardant polystyrene foam, the stirring apparatus comprising: a flame-retardant agent supply unit, an expanded polystyrene particle supply unit, a stirring unit, and a driving motor for driving the stirring device, wherein the stirring unit includes: a hollow cylindrical body part; a rotation shaft, which is formed in the center of the body part in a longitudinal direction and has one side for receiving driving force provided from the driving motor; and a plurality of stirring wings radiating around the center of the rotation shaft, so the flame-retardant agent and the expanded polystyrene particles can be continuously stirred; the flame-retardant agent can be uniformly coated on the expanded polystyrene particles by extending the retention time in the stirring device; the agglomeration of the expanded polystyrene particles can be prevented during the process of coating expanded polystyrene particles; and the flame-retardant agent and the expanded polystyrene particles laid on the bottom inside the stirring device can be all stirred.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flame retardant styrofoam-

More particularly, the present invention relates to a stirrer for producing a flame retardant styrofoam, and more particularly, to a flame retardant foamed styrofoam, which is produced by making polystyrene into which spherical particles having a foaming gas such as butane or pentane are added, EPS, Expanded Polystyrene) are separately coated with a flame retardant to make a flame retardant styrofoam which is vulnerable to heat and fire.

Expanded polystyrene (EPS) is widely used throughout the industry due to its excellent insulating properties and cushioning properties. Especially, it is a useful item widely used for packaging materials for buildings, insulation materials for buildings and sound absorbing materials. Due to its weak characteristic, it acts as a diffusion medium of the firepower in case of fire, which causes not only a pumper which causes a large fire but also a serious disadvantage such as a toxic gas which is fatal to the human body in the process of burning, In recent years, studies and efforts have been actively made to impart flame retardant functionality to foamed styrofoam.

In general, EPS board refers to a product made by molding expanded polystyrene into a block shape and then cutting it into a certain thickness to form a board. EpiSea board is made by processing expanded polystyrene and has good processability and very light characteristics.

In addition, since the EPISBOARD is manufactured by foaming the EPISEID, it has numerous micropores therein, which not only excels in heat insulation but also effectively blocks noise and conversation contents coming from the outside, Was considered to be a building's insulation material and noise-proofing material, and is actually used as a thermal insulation material for buildings.

On the other hand, EPISBOARD is vulnerable to fire and has a disadvantage that it can burn easily when exposed to fire. Therefore, it has been regulated to be used as a thermal insulation material of buildings only with flame retardant epoxy board.

Today, the method of producing flame retardant epoxy board is roughly classified into the impregnation method using an organic flame retardant and the coating method using an inorganic flame retardant based on the treatment method of the flame retardant and the flame retardant used .

 An impregnation method using an organic flame retardant is a method of utilizing an organic material including an organic halogen element as a flame retardant used in an epoxy board. This method initially appeared in the course of seeking the flame retardation of the epoxy board. An organohalogen compound having an inert character is used as a flame retardant, and the organohalogen compound is added together with the foaming agent during the polymerization of the styrene monomer , And directly impregnating the flame-retardant agent in the produced epitaxial bead particles. However, since this method generates more harmful gas that is lethal to the human body from the above-mentioned organic halogen compound contained in the EPS board during a fire, it is hardly utilized today.

Methods for using an inorganic flame retardant include a method of manufacturing a flame retardant epoxy board by coating the surface of an EPS board with an inorganic flame retardant agent and a method of coating an inorganic flame retardant agent on the surface of each EPS bead , And thereafter refining the flame retardant-coated episode bead to produce a flame retardant epoxy board. Regardless of the method, when a flame retardant epoxy board using an inorganic flame retardant is used as a thermal insulation material for a building, an inorganic flame retardant forms an insulating film from a flame of fire even when a fire occurs, It is possible to prevent the epoxy board from being exposed to the flame, and since the inorganic flame retardant is decomposed or does not generate harmful gas, it is most widely used today.

First, a method of coating an inorganic flame retardant on the surface of an epoxy board (a method of coating a surface of an epoxy board) is a method in which an epoxy resin is preliminarily foamed and then foamed inside the block mold to form an epoxy block , The above-mentioned epoxy block is cut to a predetermined thickness to convert it to an epoxy board (flat board), then an inorganic flame retardant solution is coated on one or both surfaces of the epoxy board (flat board) .

This method is advantageous in that once the epoxy board is manufactured, it can be divided into a flame retardant epoxy board or a conventional epoxy board depending on the use of the epoxy board. That is, when a flame-retardant epoxy board is required, the resulting epoxy board can be coated with a solution of an inorganic flame retardant agent. If a conventional epoxy board is required, it is advantageous to ship the flame retardant agent without separately treating the inorganic flame retardant agent . However, in the case of the flame-retardant epoxy board, the flame-retardant agent is coated only on the surface of the flame-retardant epoxy board, and the flame-retardant agent is not present inside the epoxy board. In order to overcome such disadvantages, a so-called sheath method is used to place a sheath in the middle of the epoxy board, and a flame retardant solution is put therein.

On the other hand, a method of directly coating the inorganic flame retardant on the surface of the episubide (Bead Coating Method) is a method in which the flame retardant solution is directly coated on the spherical surface of the primary prefoamed episobe bead, It is a method of secondary foaming.

In this method, primary prefoamed episobe beads are respectively coated with a flame retardant agent, the flame retardant-coated epoxy pre-expanded particles are again secondary foamed to form an epoxy block, and then the epoxy block is laminated to a predetermined thickness The flame retardant is contained not only on the surface of the epoxy board but also inside the epoxy board, and it is possible to expect a uniform flame retardant distribution throughout the entire epoxy board. Thus, the flame retardant epoxy board manufactured in this manner has the advantage of being able to exhibit more efficient flame retardant performance than the flame retardant epoxy board manufactured by any other method.

However, the conventional method for producing such a flame retardant epoxy board is such that a preliminarily foamed episobe bead and a flame retardant solution are introduced into a predetermined container, mixed for a certain period of time, and then dried. This method was carried out by injecting a predetermined amount of phosphazide and a predetermined amount of a flame retardant solution into a single container (tank), and after coating the phosphazide with the above flame retardant solution, ), And then a new episode bead and a flame retardant solution were introduced again. That is, conventionally, even in the case of the bead coating method, a batch process has been performed.

However, in this method, since the epoxy board and the flame retardant solution are mixed with each other in one tank and then dried thereon, the batch input and collective recovery systems are maintained. Therefore, depending on the amount of the injected flame retardant solution, it was difficult to uniformly and uniformly coat the surface of the globular shape. For example, when the solution of the flame retardant agent is insufficient, a normal thickness covering portion and an abnormally thin covering portion are present, whereas when the flame retardant solution is excessive, a normal thickness covering portion and an abnormally thick covering portion are generated Was to lose. This phenomenon has caused a direct or indirect negative influence on the final flame retardant performance of the final epoxy board.

As a result, in the flame-retardant epoxy board, the final flame-retardant performance is determined depending on whether or not a thin film can be formed uniformly by coating a flame-retardant material on the surface of the secondary foamed epoxy resin. Could not efficiently and uniformly coat flame retardant materials.

Further, according to the conventional method, the flame retardant solution can not be uniformly coated on the surface of the epoxy resin by a continuous method.

Korean Patent No. 10-0602196 Japanese Patent Publication No. 07278340

The object of the present invention is to solve the above problems, and an object of the present invention is to provide a stirring device for producing flame retardant styrofoam which can continuously stir flame retardant and foamed styrofoam particles.

It is still another object of the present invention to provide a stirring device for producing flame retardant styrofoam, which allows a flame retardant to be evenly coated on foamed styrofoam particles by increasing the staying time in the stirrer.

It is still another object of the present invention to provide a stirring device for producing a foamed styrofoam, which can prevent aggregation of foamed styrofoam particles during coating.

Finally, another object of the present invention is a stirring device for producing flame retardant styrofoam, which is capable of stirring both the flame retardant and the foamed styrofoam particles laid on the bottom of the stirrer.

In order to achieve the above object, the present invention provides a stirring device for producing flame retardant styrofoam, comprising a flame retardant supply part, a foamed styrofoam particle supplying part, a stirrer, and a driving motor part for driving the stirrer,

The agitator includes a hollow cylindrical body portion; A rotation shaft which is formed at a center of the body part in the longitudinal direction and has one side to receive a driving force provided from the driving motor unit; And a plurality of stirring vanes formed by being radiated around the rotation axis.

In this case, the stirring vanes are formed at different angles from each other.

Further, the present invention is further characterized in that it further comprises an auxiliary stirring wing portion for connecting the stirring wing portion and the stirring wing portion.

At this time, the auxiliary stirring vanes are formed in a rod shape having a polygonal cross-sectional area, and the auxiliary stirring vanes are laid in different positions and angles to be attached to the stirring vanes.

The main body may further include an auxiliary roller for transmitting the driving force of the driving motor to the body so that the body rotates about the rotation axis.

In addition, the rotation direction of the body portion and the stirring vane portion may be reversed.

And a door part that can be opened and closed on a side surface of the body part so that the stirring vane and the auxiliary stirring vane located inside the body part can be repaired and managed.

As apparent from the above description, the present invention has an advantage that the flame retardant and the foamed styrofoam particles can be continuously stirred.

In addition, there is an advantage that the flame retardant can be uniformly coated on the foamed styrofoam particles by increasing the staying time in the stirrer.

In addition, there is an advantage that aggregation of the foamed styrofoam particles can be prevented during the coating process.

Further, there is an advantage that both the flame retardant and the foamed styrofoam particles laid on the bottom of the stirrer can be stirred.

1 is a perspective view of a stirring apparatus for producing flame retardant styrofoam according to an embodiment of the present invention.
FIG. 2 is a view of a rotating shaft, a stirring blade, and an auxiliary stirring blade among stirring devices for producing a flame retardant styrofoam according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

FIG. 1 is a perspective view of a stirring device for manufacturing a flame retardant styrofoam according to an embodiment of the present invention, FIG. 2 is a view showing a rotating shaft, a stirring blade, and an auxiliary stirring blade among stirring devices for producing flame- to be.

1 and 2, the stirring apparatus for producing a flame retardant styrofoam according to the present invention includes a flame retardant supply unit 300, a foamed styrofoam particle supply unit 200, a stirrer 100, And a motor unit (400), wherein the flame retardant styrofoam-

The stirrer (100) includes a hollow cylindrical body portion (110); A rotating shaft 120 which is formed at a center of the body 110 in a longitudinal direction and has one side to receive a driving force provided from the driving motor unit 400; And a plurality of stirring vanes 130 formed by spinning about the rotation axis 120.

Hereinafter, embodiments of the present invention will be described in detail.

The stirrer (100) for mixing a flame retardant and foamed styrofoam particles, the flame retarder supply part (300) attached to one side of the stirrer (100) and supplying the flame retardant; A foamed styrofoam particle supply unit 200 installed adjacently to the flame retardant supply unit 300 and supplying the foamed styrofoam particles; And a driving motor unit (400) disposed at a lower portion of one side of the stirrer (100) and supplying a rotational driving force to the stirrer (100).

In order to mix the flame retardant and the foamed styrofoam particles, they are mixed in the stirrer 100. To this end, the flame retardant supply part 300 for supplying the flame retardant and the foamed styrofoam particles and the foamed styrophomate particle supply part 200 are installed adjacent to one side of the stirrer 100.

Accordingly, the flame retardant and the foamed styrofoam particles are continuously introduced into the stirrer 100 through the flame retardant supply unit 300 and the foamed styrofoam particle supply unit 200, and the flame retardant and the foamed styrofoam particles The dosage can be adjusted.

The stirrer 100 includes a body 110 having a hollow cylindrical shape, a rotating shaft 120 formed in a longitudinal direction at a center of the body 110, And a plurality of stirring wing parts 130. The rotation shaft 120 rotates using power provided from the outside (the driving motor part 400), thereby rotating the stirring wing part 130 .

The flame retardant and the foamed styrofoam particles are introduced into the stirrer 100 and the rotating shaft 120 and the stirring wing 130 are rotated by using the rotational driving force of the driving motor unit 400 in the stirrer 100, And the foamed styrofoam particles are mixed with the flame retardant.

At this time, in order to mix the flame retardant and the foamed styrofoam particles well, it is preferable that the angles of the stirring vanes 130 are different from each other. If the angles of the stirring wing portions 130 are all the same, there is no difference in the flame retardant and the foamed styrofoam particles located between the stirring wing portions 130, The flame retardant may not be coated uniformly.

In addition, a rod-shaped auxiliary stirring wing 140 having a polygonal cross-sectional area is formed between the stirring wing 130 and the stirring wing 130. The auxiliary stirring wing part 140 is positioned between the stirring wing part 130 and the stirring wing part 130 to prevent the foamed styrofoam particles between the stirring wing parts 130 from clumping do. When the foamed styrofoam particles do not aggregate, the flame retardant may be uniformly coated on the outer surface of the foamed styrofoam particles.

At this time, the auxiliary stirring wing 140 has different positions and angles to be laid between the stirring wing parts 130 and is different because the angle of the stirring wing part 130 is not constant So that the foamed styrofoam particles located between the stirring vanes 130 and the flame retardant can be mixed well.

In addition, since the stirring wing 130 and the auxiliary stirring wing 140 form different angles and positions, the time for positioning the flame retardant and the foamed styrofoam particles inside the stirrer 100 is increased, The flame retardant can be uniformly coated on the outer surface of the styrofoam particle.

Further, it is preferable that the body 110 of the stirrer 100 is also configured to rotate. For this purpose, in order to rotate the body portion 110, which is not capable of rotating autonomously, a driving force must be provided from the outside, and the auxiliary roller portion 500 plays a role.

At least one of the auxiliary roller unit 500 is located on the outer surface of the body 110 so that the rotational driving force of the driving motor unit 400 is transmitted to the body 110, So that it can rotate.

The reason why the body 110 is rotated is that the flame retardant and the foamed styrofoam particles are positioned inside the body 110. When the body 110 does not rotate, The flame retardant and the foamed styrofoam particles are deposited on the bottom of the inner surface of the part (110). Although the flame retardant and the foamed styrofoam particles in the bottom of the body 110 can be mixed again by the rotation of the stirring wing 130 and the auxiliary stirring wing 140, The flame retardant and the foamed styrofoam particles injected into the flame retardant can be used for mixing evenly.

At this time, the rotating direction of the stirrer 100 and the rotating direction of the stirring wing 130 and the auxiliary stirring wing 140 are opposite to each other. If the stirrer 100, the stirring wing 130 and the auxiliary stirring wing 140 are rotated in the same direction, the stirring effect due to rotation may be lowered, would.

The stirring wing 130 and the auxiliary stirring wing 140 may be hinged at one side so as to open and close the side of the body 110 in order to solve the process of mixing the flame retardant and the foamed styrofoam particles, Thereby forming a combined door portion 150.

The user operates and controls the stirring device for producing a flame retardant styrofoam according to the present invention as described above by controlling the rotating speed of the stirrer 100, the rotating shaft 120, the stirring wing 130, and the auxiliary stirring wing 140, The controller 600 is located at one side of the stirrer 100 to adjust the temperature of the agitator 100.

The stirrer for producing a flame-retardant foam of the present invention constituted as described above is a part of the process for producing flame retarded styrofoam, and is a stirrer used in a part of the process. After the stirrer 100, a mixer 700 is located, and the process after the mixer 700 is the same as the conventional method.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various modifications may be made without departing from the scope and spirit of the invention.

100 - stirrer
110 -
120 - rotating shaft
130 - stirring wing
140 - auxiliary stirring wing
150 - door part
200 - foamed styrofoam particle supply part
300 - Flame retardant supplier
400 - drive motor section
500 - Auxiliary roller section
600 -
700 - Mixer

Claims (7)

A stirrer, and a driving motor for driving the stirrer, wherein the stirrer for producing a flame retardant styrofoam,
The stirrer may include:
A hollow cylindrical body portion;
A rotation shaft which is formed at a center of the body part in the longitudinal direction and has one side to receive a driving force provided from the driving motor unit; And
And a plurality of stirring vanes formed by being radiated around the rotation axis,
Wherein the stirring vanes are formed at different angles from each other. delete The method according to claim 1,
Further comprising an auxiliary stirrer for connecting the stirring wing portion and the stirring wing portion. The method of claim 3,
Wherein the auxiliary stirring wing is formed in a rod shape having a polygonal cross-sectional area, and the auxiliary stirring wing portion is installed at different positions and angles to the stirring wing portion. The method according to claim 1,
Further comprising: at least one auxiliary roller portion for transferring a driving force of the driving motor portion to the body portion so that the body portion rotates about the rotation axis, on an outer side of the body portion. 6. The method of claim 5,
Wherein the rotating direction of the body part and the stirring blade is opposite to each other. The method according to claim 1,
Further comprising: a door portion that can be opened and closed on a side surface of the body portion so that the stirring wing and the auxiliary stirring wing located inside the body portion can be repaired and managed.

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