KR20230111320A - A device of glass bead and a method of preparing the same - Google Patents

Abstract

The present invention relates to a glass bead manufacturing apparatus and manufacturing method, and specifically, to a housing having an inner space and a discharge port disposed at the lower part; a chamber disposed on top of the housing; a furnace disposed inside the chamber; heating means disposed inside the chamber and at the periphery of the furnace; an injection unit disposed above the chamber and injecting a glass raw material into the furnace; a discharge portion through which molten glass raw material is discharged from the furnace; a scattering means (400) disposed in the lower portion of the furnace inside the housing to form glass beads by scattering glass raw materials falling from the discharge unit; and a storage tank for collecting the glass beads discharged through the outlet of the housing, wherein the scattering means is disposed in the lower part of the furnace inside the housing, and includes a rotating rotor; guide members spaced apart along the circumferential direction of the rotating rotor to cover a portion of the outer circumference of the rotating rotor; and a glass bead manufacturing apparatus and manufacturing method comprising a rotation controller controlling rotation of the rotary rotor.

Description

A device of glass bead and a method of preparing the same}

The present invention relates to a glass bead manufacturing apparatus and manufacturing method, and more particularly, to a glass bead manufacturing apparatus and manufacturing method for easily adjusting the particle size of the glass beads to be produced and producing glass beads having a uniform particle size and particle shape in high yield.

In general, lanes are displayed on roads, particularly road surfaces, for driving directions or for distinguishing lanes and roads, and these lanes are drawn with paint for lane marking. Looking at the components, pigments, resins, glass beads, filling materials, etc. are usually used.

Glass beads currently used for road pavement and signs have a refractive index almost similar to that of general glass (nd = 1.5), and may cause dangerous situations by not properly distinguishing lanes and indicating directions in bad weather or night driving.

According to the glass bead classification described in Korean standard KS L 2521, one type of glass bead is classified into No. 1, No. 2, and No. 3 according to its refractive index, and among them, No. 2 is disclosed to have a medium refractive index of 1.64 to 1.8.

On the other hand, as a method for producing beads or beads, molten material is free-falling from a certain height to create particles of various sizes. For example, in US Patent No. 7323047 (hereinafter referred to as 'Patent Document 1'), beads of a certain size are proposed. However, when glass beads are manufactured using the manufacturing apparatus disclosed in Patent Document 1, since the length required for cooling while free-falling after the molten material is discharged must be about 4 to 50 m, the manufacturing apparatus has a problem in that it must be large.

In addition, Korean Patent Registration No. 0495266 (hereinafter referred to as 'Patent Document 2') proposes a method of forming glass beads by scattering molten glass through a spray nozzle, but the manufacturing method disclosed in Patent Document 2 also has a problem that, like Patent Document 1, the length of the suction duct must be very long, and due to the high viscosity of the molten glass, the glass is stretched and stretched when spraying with the spray nozzle to produce thread-like glass fibers. Such glass fiber is an impurity to be classified and removed in the manufacture of glass beads, and has limitations in that the production yield of glass beads is lowered and the complexity of the process and the cost increase.

US Patent No. 7323047 Korea Patent No. 0495266

The present invention has been made to solve the problems in the related art as described above, and an object of the present invention is to increase the yield of glass beads by suppressing the generation of impurities such as glass fibers as well as easily adjusting the particle size of glass beads to be manufactured according to needs.

In addition, the present invention is to improve the uniformity of the particle size and particle shape of the manufactured glass beads.

The present invention provides a glass bead manufacturing apparatus and a glass bead manufacturing method for solving the above-mentioned problems.

One embodiment of the present invention, the inner space is formed, the lower portion of the housing in which the outlet is disposed; a chamber disposed on top of the housing; a furnace disposed inside the chamber; a heating means disposed inside the chamber and at the periphery of the furnace; an injection unit disposed above the chamber and injecting a glass raw material into the furnace; a discharge portion through which molten glass raw material is discharged from the furnace; a scattering means disposed in the lower portion of the furnace inside the housing to form glass beads by scattering glass raw materials falling from the discharge unit; and a storage tank for collecting the glass beads discharged through the outlet of the housing, wherein the scattering means is disposed in the lower portion of the furnace inside the housing, and includes a rotating rotor; guide members spaced apart along the circumferential direction of the rotating rotor to cover a portion of the outer circumference of the rotating rotor; and a rotation control unit controlling rotation of the rotation rotor.

In addition, one embodiment of the present invention provides a method for manufacturing a glass bead using the glass bead manufacturing apparatus.

According to the present invention, the particle size of the manufactured glass beads can be easily adjusted according to the user's needs, and the production yield of the glass beads is increased by suppressing the generation of impurities such as glass fibers, and the manufactured glass beads have a uniform particle size and particle shape.

1 is a view showing a first embodiment of a glass bead manufacturing apparatus 100 according to the present invention.
2 to 4 show first to third embodiments of the scattering means 400 of FIG. 1 .
5 is a diagram showing a first embodiment of a classification means 700 .
6 is a view showing a glass bead manufacturing process sequence.

Hereinafter, preferred embodiments of a glass bead manufacturing apparatus and manufacturing method according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention includes a housing having an inner space formed therein and a discharge port disposed thereon; a chamber disposed on top of the housing; a furnace disposed inside the chamber; heating means disposed inside the chamber and at the periphery of the furnace; an injection unit disposed above the chamber and injecting a glass raw material into the furnace; a discharge portion through which molten glass raw material is discharged from the furnace; a scattering means disposed below the furnace inside the housing to form glass beads by scattering glass raw materials falling from the discharge unit; and a storage tank for collecting the glass beads discharged through the outlet of the housing, wherein the scattering means is disposed in the lower part of the furnace inside the housing, and includes a rotating rotor; guide members spaced apart along the circumferential direction of the rotating rotor to cover a portion of the outer circumference of the rotating rotor; and a rotation control unit controlling rotation of the rotation rotor.

In the present invention, "glass" is a material having infinite viscosity and solidified with high transparency in which a mixture of silica sand, soda ash, lime carbonate, etc. is melted at a high temperature and then cooled.

1 is a view showing a first embodiment of a glass bead manufacturing apparatus 100 according to the present invention.

The glass bead manufacturing apparatus 100 may include a housing 200, a chamber 300, a furnace 310, a heating unit 320, a dispersing unit 400, a cooling unit 500, a storage tank 600, and a classification unit 700, wherein the dispersing unit 400 is disposed inside the housing 200 below the furnace 310, and includes a rotating rotor; guide members spaced apart along the circumferential direction of the rotating rotor to cover a portion of the outer circumference of the rotating rotor; and a rotation controller controlling rotation of the rotation rotor.

The housing 200 is formed to have an internal space of a certain size, and the internal space can be made of a size sufficient to generate a glass bead, so that the scattering distance of the glass bead required for manufacturing the desired size and shape of the glass bead can be sufficiently satisfied.

A plurality of observation windows may be disposed around the housing 200, and a worker may visually check the glass bead generation state in the inner space through the observation windows. The size of the observation window can be adjusted according to the needs of the user.

A cooling means 500 for cooling the generated glass beads may be disposed at the bottom of the housing 200 .

The storage tank 600 located at the lower part of the housing 300 collects glass beads, and the collected glass beads move to the classification unit 700 through an outlet disposed at the lower part of the storage tank 600. The discharge hole may be located in the lower part of the storage tank 600 in the shape of a hopper protruding downward from the storage tank 600 .

The chamber 300 may be disposed on one side of an upper end of the housing 200 . The inside of the chamber 300 may consist of a plurality of compartments. At this time, the inside of the chamber 300 may be heated by a heating means 320 including a heat source and a heating coil.

The heating coil may be included in one compartment inside the chamber 300, and preferably may be positioned to surround the inner wall of the chamber 300. The heat source unit transfers electricity or heat to the heating coil to heat the heating coil, ultimately heating the inside of the chamber 300 .

The furnace 310 is disposed in another section inside the chamber 300 . When the inside of the chamber 300 is heated by the heating means 320, the furnace 310 is heated.

At this time, the upper part of the furnace 310 has a container shape so that the glass raw material can be stored in a molten state, and the lower part of the furnace 310 has a nozzle shape so that the glass raw material can be dropped into the housing 200.

Glass raw material is supplied to the furnace 310 through an injection unit located at the upper part of the chamber 300 . The glass raw material may exist in a heated and molten state inside the furnace 310 .

Since the glass raw material falling into the scattering means 400 is high temperature in a molten state, fire bricks may be used to protect the inner wall of the housing 200 .

In the present invention, the inside of the housing 200 is an atmospheric atmosphere or an oxidizing gas atmosphere, and may form an atmospheric pressure or a slightly negative pressure environment. An oxidizing gas atmosphere refers to an atmosphere containing 10 ppm or more of an oxidizing gas such as oxygen, ozone or oxygen nitride.

The scattering means 400 is disposed in the lower part of the furnace 310 inside the housing 200, and the glass raw material discharged from the furnace 310 falls onto the rotating rotor of the scattering means 400, scattering the glass raw material, and cooling and forming glass beads at the same time.

Basically, since glass raw materials in a high-temperature molten state fall from the furnace 310 to the scattering unit 400, it is connected to a chiller to prevent thermal damage and can be continuously cooled between processes.

2 to 4 describe specific embodiments of the scattering means 400 of FIG. 1 .

The rotating rotor constituting the scattering unit 400 is disposed below the furnace 310 inside the housing and scatters the glass raw material falling from the furnace 310 through rotational force/centrifugal force.

As a specific embodiment, in FIG. 2, the scattering means 401 uses a flat roller 430 as a rotating rotor, and in FIGS. 3 and 4, the scattering means 402, 403 use a cylindrical concave-convex roller 431 formed with a plurality of teeth along the circumferential direction as a rotating rotor, and a disk-shaped concave-convex plate 432 formed with a plurality of teeth along the circumferential direction, respectively.

2 to 4, the scattering means 401, 402, 403 includes a flat roller 430, a cylindrical concave-convex roller 431 having a plurality of teeth formed along the circumferential direction, and a plurality of teeth formed along the circumferential direction. A guide member 420 spaced apart from each other in the circumferential direction to cover a portion of the outer circumference of the concave-convex plate 432; and a rotation controller (not shown) for controlling rotation of the rotation rotor.

The size, scattering area, or production yield of glass beads may be adjusted by adjusting the inclination of the teeth of the uneven roller 431 or the uneven plate 432 . The tooth may be configured in a triangular cross-sectional shape, but there is no shape limitation as long as it can function to scatter the molten glass raw material.

For example, when a concave-convex roller 431 or concave-convex plate 432 having a relatively high height and inclination of teeth is selectively installed and operated, the falling glass raw material is subjected to a stronger pushing force, so that the scattering area of the glass beads increases and the size of the glass beads generated in the scattering process becomes smaller.

At this time, when linked with the increase in rotation speed, the production yield also increases. For example, when a worker increases the rotational speed of the rotating rotor, the conductive material dropped from the furnace 310 receives a stronger centrifugal force and is scattered into the inner space of the housing 200. In addition, since it receives strong centrifugal force, the scattering area increases.

Also, as the rotational speed increases, the number of revolutions per unit time of the rotating rotor increases, so the amount of glass beads scattered by the drop impact and centrifugal force per unit time also increases. That is, the production yield per unit time is increased, the production yield is improved, and the overall product productivity is improved.

Conversely, when the operator reduces the rotational speed of the rotating rotor, the centrifugal force is relatively weakened, so that the scattering area of the glass beads decreases and the size increases. In addition, since the number of revolutions per unit time of the rotating rotor decreases, the amount of production per unit time also decreases, resulting in a lower production yield.

In the present invention, the adjustment of the size, scattering area, production yield, etc. of the glass beads can be easily and simply performed by the operator by adjusting the rotational speed of the rotating rotor.

The scattering means includes a rotating rotor; lack of guidance; and a rotation control unit controlling rotation of the rotation rotor, wherein the rotation control unit is connected to a rotation shaft of the rotation rotor to control rotation of the rotation rotor. The rotation control unit may control a motor (not shown) interlocked with the rotation shaft of the rotation rotor. An operator may adjust the rotational speed of the rotating rotor in order to adjust the glass bead size, scattering area, production yield, and the like.

Since the viscosity of the molten glass stored in the furnace 310 is very high, glass fibers may be produced when the molten glass is scattered in the scattering molding step. In particular, the molten glass is scattered due to the wind caused by the rotation of the rotating rotor, generating a large amount of glass fibers in the form of thin threads rather than spheres. As a result, the production yield of glass beads is lowered, and the guide member 420 serves as a windshield for the rotating rotor to prevent glass fibers from being generated from molten glass.

The guide member 420 is spaced apart along the circumferential direction of the rotating rotor to cover a portion of the outer circumference of the rotating rotor.

At this time, the guide member 420 may be spaced apart from the rotating rotor at an interval of 1 cm or less, preferably at an interval of 0.5 cm or less, and more preferably at an interval of 0.3 cm or less. As long as the rotation of the rotating rotor is not hindered, the smaller the distance between the guide member 420 and the rotating rotor, the better.

The guide member 420 is configured to surround a portion of the outer circumference of the rotating rotor while being spaced apart from the rotating rotor. Preferably, the guide member 420 may be disposed to surround 10% to 99% of the circumference of the rotating rotor.

In addition, the operator can adjust the size of the glass beads, the scattering area, and the production yield by adjusting the height H1 or the inclination D1 of the teeth of the concave-convex roller 431 and the concave-convex plate 432 .

For example, when the concave-convex roller 431 and the concave-convex plate 432, which have relatively high height H1 and inclination D1 of the teeth, are selectively mounted and operated, the falling conductive material receives a stronger pushing force, so the scattering area of the glass beads increases, and the size of the glass beads generated in the scattering process becomes smaller. At this time, when linked with an increase in rotation speed, the production yield also increases.

Conversely, when the concave-convex roller 431 and the concave-convex plate 432, which are processed to have a relatively small height H1 and inclination D1 of the teeth, are selectively mounted and operated, a relatively weak pushing force is applied, so that the scattering area of the glass beads is reduced and the size is relatively increased.

In the present invention, the adjustment of the size, scattering area, production yield, and the like of the glass beads is characterized in that the operator easily achieves the replacement operation of the concave-convex roller 431 having different teeth.

The cooling means 500 is located at the bottom of the housing 200, and allows scattered glass beads to freely fall to the cooling plate of the cooling means 500. The cooling plate of the cooling means 500 has an inclination on the horizontal surface to increase the contact time and area between the cooling plate of the cooling unit 500 and the scattered glass beads for efficient cooling.

The cooling means 500 may be fixed to the bottom of the housing, or may include a vibration system to move glass beads dispersed to the storage tank 600 simultaneously with cooling.

The vibrating system includes a cooling plate and a first vibrating feeder coupled to the cooling plate and including a vibrator, so that glass beads generated by vibrating the cooling plate are cooled and moved to the storage tank 600 .

The vibrating system prevents scattered glass beads from aggregating or entangling on the cooling plate.

The glass bead manufacturing apparatus of the present invention may additionally include a sorting means 700 for classifying the glass beads collected in the storage tank according to shape and/or size.

The glass beads collected in the storage tank preferably have a spherical shape, but since non-spherical glass beads are also generated and mixed in the storage tank in the scattering molding step, it is necessary to separate the non-spherical glass beads later. Alternatively, it is necessary to classify glass beads according to size and/or shape in order to commercialize glass beads according to needs.

FIG. 5 shows a first embodiment of a sorting means 700 for sorting the glass beads moved from the reservoir of FIG. 1 .

The sorting unit 700 includes an inlet 710 for supplying glass beads collected in the storage tank to a diaphragm 720, a diaphragm 720, and a second vibration feeder 730, and the diaphragm 720 has an inclination with respect to a horizontal plane and/or a vertical plane.

When the glass beads collected in the storage tank are supplied to the diaphragm 720 through the inlet 710, the glass beads on the diaphragm 720 are moved onto the diaphragm by the vibration of the tilted diaphragm 720, and the glass beads can be classified because the moving distance and moving path of the glass beads vary according to the shape and/or size.

More specifically, the glass beads on the diaphragm 720 may be classified according to the purpose of the shape and/or size of the glass beads by a combination of the width, length, inclination, intensity of vibration, frictional force of the surface of the diaphragm 720, and gravity.

For example, the diaphragm 720 may be configured to be inclined at 0.1° to 10° with respect to the horizontal plane and at 0.1° to 10° with respect to the vertical plane. In this case, the non-spherical glass beads move to the highest point of the diaphragm while drawing a low curve with respect to the moving direction, but the spherical glass beads move to the low point of the diaphragm while drawing a high curve with respect to the moving direction.

The diaphragm 720 shown in FIG. 4 is a deck having a triangular matte surface and has an inclination of about 10° with respect to the horizontal and vertical planes.

The glass beads introduced from the inlet 710 are provided to one corner of the diaphragm 720 and move across the diaphragm 720 by gravity and vibration of the deck. The spherical glass bead moves a relatively short distance on the diaphragm 720 and then falls to the lower right corner, but the non-spherical glass bead moves to a higher point and falls to the upper left corner. Depending on where the dropped glass bead is located, various types of glass beads can be collected.

In this way, the shape and size grade of the glass beads to be classified may be defined by adjusting the width, length, inclination, intensity of vibration, and frictional force of the surface of the diaphragm 720 of the diaphragm 720 .

The basic structure of the glass bead manufacturing apparatus 100 according to the present invention has been described above, and a glass bead manufacturing method using the above-described bead manufacturing apparatus 100 will be described below.

6 is a view showing a glass bead manufacturing process sequence. The generation area of glass beads described below may refer to an inner space of the housing 200 .

Referring to FIG. 5 , the glass bead manufacturing method in the first embodiment of the present invention may include a raw material injection step (S1), a heating step (S2), a scattering molding step (S3), a cooling step (S4), and a collecting step (S5).

First, in the raw material injection step (S1), the operator drops and injects the glass raw material into the furnace 310 through the injection part of the chamber 300.

In the next heating step (S2), the worker operates the heating means 320 to heat the furnace 310 to melt the glass raw material in the furnace 310.

In the next scattering molding step (S3), by operating the rotation control unit of the scattering unit to rotate the rotating rotor, the molten glass raw material falling from the furnace 310 is dropped to the rotating rotor, and is scattered into the inner space of the housing 200 by the centrifugal force of the rotating rotor to be formed into beads.

At this time, as discussed above, the operator adjusts the rotational speed of the rotational rotor through the rotation control unit to adjust the size, scattering area, production yield, and the like of the glass beads.

Alternatively, as described above, the operator can adjust the size, scattering area, production yield, etc. of the glass beads by adjusting, in detail replacing or changing the height or inclination of the teeth of the rotating rotor.

In the next cooling step (S4), the scattered and formed glass beads are cooled, and then in the collecting step (S5), the operator harvests the glass beads produced through the outlet.

The above details merely show specific examples of the glass bead manufacturing method and the manufacturing apparatus.

Therefore, it should be noted that those skilled in the art can easily understand that the present invention can be substituted or modified in various forms without departing from the spirit of the present invention described in the claims below.

100: glass bead manufacturing device 200: housing
300: chamber 310: furnace
320: heating means 400: scattering means
500: cooling means 600: reservoir
700: sorting means
401, 402, 403: scattering means 410: rotating shaft
420: guide member
430: rotating rotor (flat roller)
431: rotating rotor (convex-convex roller)
432: rotating rotor (convex plate)
710: inlet 720: diaphragm
730: second vibration feeder

Claims (24)

a housing in which an inner space is formed and a discharge port is disposed at a lower portion;
a chamber disposed on top of the housing;
a furnace disposed inside the chamber;
heating means disposed inside the chamber and at the periphery of the furnace;
an injection unit disposed above the chamber and injecting a glass raw material into the furnace;
a discharge portion through which molten glass raw material is discharged from the furnace;
a scattering means disposed in the lower portion of the furnace inside the housing to form glass beads by scattering glass raw materials falling from the discharge unit; and
And a storage tank for collecting the glass beads discharged through the outlet of the housing,
The scattering means is disposed in the lower part of the furnace inside the housing, and includes a rotating rotor; guide members spaced apart along the circumferential direction of the rotating rotor to cover a portion of the outer circumference of the rotating rotor; and a rotation control unit controlling rotation of the rotation rotor. According to claim 1,
The guide member is a glass bead manufacturing apparatus spaced apart from the rotating rotor at intervals of 1 cm or less. According to claim 1,
The guide member is arranged to surround 10% to 99% of the circumference of the rotating rotor. According to claim 1,
The guide member is arranged to surround the entire outer circumference of the rotating rotor except for the area where the molten glass raw material is dropped and scattered on the rotating rotor. According to claim 1,
The rotating rotor is a flat roller, a concave-convex roller having a plurality of teeth along the circumferential direction, or a concave-convex plate. According to claim 5,
Glass bead manufacturing apparatus for controlling the size, scattering area or production yield of glass beads by adjusting the height or inclination of the teeth of the concave-convex roller and the concave-convex plate. According to claim 1,
Glass bead manufacturing apparatus further comprising a cooling means for cooling the scattered glass beads inside the housing. According to claim 7,
The cooling means is fixed to the bottom of the housing; or
A glass bead manufacturing apparatus comprising a conveyor system or a vibration system to move scattered glass beads to a storage tank. According to claim 8,
The vibration system of the cooling means is
cooling plate; and a vibrator coupled to the cooling plate to vibrate the cooling plate.
Glass bead manufacturing apparatus comprising a. According to claim 1,
Glass bead manufacturing apparatus further comprising a classification means for classifying the glass beads collected in the storage tank according to shape or size. According to claim 10,
The classification means,
Including an inlet for supplying the collected glass beads onto a vibrating plate, a vibrating plate and a second vibrating feeder,
The glass bead manufacturing apparatus wherein the diaphragm has an inclination with respect to a horizontal plane and / or a vertical plane. According to claim 11,
A glass bead manufacturing apparatus for classifying glass beads according to the size and/or shape of the glass beads by adjusting at least one of the width, length, inclination, intensity of vibration, and frictional force on the surface of the diaphragm. According to claim 11,
Glass bead manufacturing apparatus wherein the diaphragm is inclined at 0.1 ° to 10 ° relative to the horizontal plane. According to claim 11,
Glass bead manufacturing apparatus in which the diaphragm is inclined at 0.1 ° to 10 ° with respect to the vertical plane. A method for manufacturing glass beads using the glass bead manufacturing apparatus according to any one of claims 1 to 14. A raw material injection step of injecting a glass raw material;
A heating step of heating and melting the glass raw material;
Scattering molding step of scattering the glass raw material and molding it into a bead form;
A glass bead manufacturing method comprising a collecting step of collecting glass beads,
In the scattering molding step, in order to scatter the molten glass raw material,
Glass bead manufacturing method of scattering the glass raw material by using a rotating rotor including a guide member disposed spaced apart along the circumferential direction in the scattering molding step. According to claim 16,
The glass bead manufacturing method further comprising a cooling step of cooling the glass beads after the scattering molding step and before the collecting step. According to claim 16,
After the collecting step, the glass bead manufacturing method further comprising a classification step of classifying the collected glass beads by shape and / or size. According to claim 16,
The glass bead manufacturing method, characterized in that in the scattering molding step, using a centrifugal force to scatter the molten glass raw material. According to claim 16,
The guide member is a glass bead manufacturing method spaced apart from the rotating rotor at intervals of 1 cm or less. According to claim 16,
The guide member is arranged to surround 10% to 99% of the circumference of the rotating rotor. According to claim 16,
The guide member is arranged to surround the entire outer circumference of the rotating rotor except for the area where the molten glass raw material is dropped and scattered on the rotating rotor. According to claim 16,
The rotating rotor is a flat roller, a cylindrical concave-convex roller formed with a plurality of teeth along the circumferential direction, or a concave-convex plate. According to claim 23,
The glass bead manufacturing method of controlling the size, scattering area or production yield of glass beads by adjusting the height or inclination of the teeth of the concave-convex roller and the concave-convex plate.

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