KR101948507B1 - Air-blow type separating apparatus - Google Patents

Abstract

An air-blow type screening apparatus comprises: a charge conveyor for charging aggregates and objects to be screened; a wind power generating unit for generating wind power; a discharge conveyor for discharging the falling aggregates transferred by the charge conveyor to the outside; and an air-blow unit disposed on the discharge conveyor for receiving the wind power from the wind power generating unit and dispersing the objects to be screened by applying wind to the falling object to be screened. According to the present invention, unnecessary energy consumption can be reduced and screening efficiency can be increased.

Description

{AIR-BLOW TYPE SEPARATING APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air blowing type sorter, and more particularly, to an air blowing sorter for sorting falling aggregate by blowing impurities using wind.

The blowing type sorting device used for recycling aggregate blows off the aggregate with a blower to blow off impurities, foreign matter, and waste mixed with the aggregate, thereby sorting the aggregate that can be recycled.

When wind is supplied by the blower when the aggregate falls, the scatterable foreign matter contained in the fallen aggregate is scattered and separated, and the scattered aggregate is separated and recycled separately after falling as it is.

In the case of the conventional sorting apparatus, air is blown at a constant height, so that when the large aggregate is blocked from the front, it is difficult to sort out the foreign matters hidden behind, so that the sorting efficiency is reduced.

In addition, when aggregates and sorting objects of various sizes and weights are dropped, it is necessary to apply wind at an intensity more than necessary when a constant intensity of wind is continuously supplied. At the same time, There is a problem that is difficult to do.

Accordingly, there is a need for a blowing-type sorting apparatus that can perform effective sorting by supplying an appropriate amount of wind according to the size and weight of aggregate.

Korean Patent Registration No. 10-0582028

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a multi- The present invention has been made to solve the above problems, and it is an object of the present invention to provide an air filtering type sorting apparatus capable of increasing the sorting efficiency by detecting the weight and size of the aggregate and the sorting object to fall through.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an air blowing type sorter comprising: an input conveyor for inputting an aggregate and a sorting object; A wind power generating unit for generating wind power; A discharge conveyor for discharging the aggregated material conveyed by the input conveyor to the outside; And an air blowing unit disposed on the discharge conveyor for blowing air to the falling sorting object to scatter the sorting object.

According to an embodiment of the present invention, an aggregate conveyed by the input conveyor is inclined at the end of the input conveyor, and the aggregate is dropped to the discharge conveyor through the upper inclined surface, and the aggregate and the impact Sensing plate; A vibrator disposed below the sensing plate for vibrating the sensing plate up and down; A first size and a second size that are arranged in the aggregate dropping interval between the sensing plate and the discharge conveyor and adjust the size of the holes of the first and second tuyeres for discharging the wind sideways by the wind force transmitted from the wind- An adjustment panel and a second size adjustment panel; And controlling vibrations of the exciter, calculating the weight of the aggregate and the sorting object based on the magnitude of the impact sensed by the sensing plate, and calculating the size of the aggregate and the sorting object through the calculated weight of the aggregate and the sorting object And a control device for controlling the first sizing panel and the second sizing panel to open the first tuyer and the second tuyere at a predetermined size according to the estimated size, And the second tuyeres are arranged in the first tuyere and the second tuyere is provided with a sloping wall for preventing the falling aggregate from being separated from the first tuyere, the size of the hole of the first tuyere is larger than the size of the hole of the second tuyere, As shown in FIG.

According to the ventilating type sorter according to the present invention, it is possible to reduce unnecessary energy consumption and increase the sorting efficiency by applying the optimized wind according to the size and weight of the aggregate and the sorting object transported in real time, It is possible to separate and apply a wind having an intensity suitable for the size and weight of the sorting object, thereby further increasing the sorting efficiency.

However, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a schematic front view of a blowing-type sorter according to an embodiment of the present invention.
2 is a schematic side view of the ventilation type sorter of FIG.
3 is a control-related configuration diagram of the ventilation type sorter of FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Where the terms "comprises", "having", "done", and the like are used in this specification, other portions may be added unless "only" is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

It is to be understood that elements or layers are referred to as being "on " other elements or layers, including both intervening layers or other elements directly on or in between. Like reference numerals refer to like elements throughout the specification.

The sizes and thicknesses of the individual components shown in the figures are shown for convenience of explanation and the present invention is not necessarily limited to the size and thickness of the components shown.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other partially or entirely and technically various interlocking and driving is possible as will be appreciated by those skilled in the art, It may be possible to cooperate with each other in association.

Hereinafter, a blowing-type sorter according to the present invention will be described with reference to the accompanying drawings.

1 to 3, an air blowing type sorter 100 according to an embodiment of the present invention includes an input conveyor 110, a wind force generating unit 120, a sensing plate 130, 140, a discharge portion 150, a discharge conveyor 160, and a control device 170.

The sorting object, including aggregates of various sizes and non-selected sizes, foreign matter, wastes and the like, is put into the ventilating sorting apparatus 100 through the input conveyor 110. The input conveyor 110 transfers the aggregate to the upper side of the inflow part 150 to be described later in order to drop the aggregate at the time of sorting. In this embodiment, the input conveyor 110 is shown as being disposed parallel to the ground on the upper side for the sake of understanding, but it may be disposed in an inclined state to convey the aggregate from the lower side to the upper side.

Among the aggregates of various sizes, wind power is used to sort out small objects such as aggregates and foreign matter, and to select large aggregates. The wind force necessary for sorting is generated through the wind power generating unit 120 and transmitted to the wind-up unit 150. The wind power generation unit 120 may be composed of a small-sized aggregate and a variety of known wind generators capable of generating sufficient wind power for picking up foreign matter.

 The sensing plate 130 is disposed at an end of the charging conveyor 110 so as to be inclined downward. The sensing plate 130 drops the aggregate conveyed by the input conveyor 110 downward. The aggregate that has passed through the input conveyor 110 is conveyed to the upper portion of the sensing plate 130 and descends along the upper inclined surface of the sensing plate 130 to be dropped.

The sensing plate 130 vibrates up and down by the vibrator 140. The sensing plate 130 may be vibrated by applying and releasing upward force to the sensing plate 130 by the vibrator 140 disposed below the sensing plate 130. The vibrating unit 140 vibrates the sensing plate 130 so that the aggregates on the sensing plate 130 are simultaneously moved up and down while moving on the inclined surface of the sensing plate 130. During the vibration, the aggregate moves up and away from the sensing plate 130, and impacts the sensing plate 130 while descending.

An impact due to the vibration of the aggregate is sensed through the sensing plate 130. Impacts of different sizes are sensed by the sensing plate 130 at different points of time by aggregates of different sizes. The sensing plate 130 may include one or more pressure sensors therein. The weight of the aggregate can be known through the magnitude of the impact applied to the sensing plate 130 at a certain point of time and the approximate size of the aggregate can be estimated in consideration of the density of the conventional aggregate. Thus, the size distribution of the aggregates moving on the sensing plate 130 in real time can be grasped.

As described above, since the aggregate conveyed through the input conveyor 110 is not dropped immediately but falls through the vibrating sensing plate 130, the air flow intensity can be adjusted for effective selection in consideration of the size distribution of the aggregates, The foreign matter attached to the aggregate can be separated in advance by applying vibration to the aggregate, thereby increasing the sorting efficiency.

The aggregate dropped from the sensing plate 130 is dropped onto the discharge conveyor 160 and discharged to the outside through the discharge conveyor 160. The inclined walls 161 and 162 are formed at both sides of the discharge conveyor 160 to prevent the aggregate falling on the discharge conveyor 160 from escaping to the outside.

An aggregated material falling down between the sensing plate 130 and the discharge conveyor 160 and an air blowing unit 150 for sorting the objects to be sorted by blowing air to the sorting object are disposed in a section where the aggregate falls.

The blowing unit 150 includes a first blowing hole 151 and a second blowing hole 152 through which wind is discharged laterally by the wind force transmitted from the wind power generating unit 120. The first blowing opening 151 has a larger opening size than the second blowing opening 152 and is disposed above the second blowing opening 152.

A first fixing panel 153 is disposed on the upper side of the first tuyere 151 and a second fixing panel 153 is disposed below the first tuyere 151 to move up and down as shown in FIG. A first size adjustment panel 154 is disposed.

A second fixing panel 155 is disposed on the upper side of the second air outlet 152 and a second fixing panel 155 is disposed on the lower side of the second air outlet 152 so as to adjust the size of the hole of the second air outlet 152, A second size adjustment panel 156 is disposed.

The greater the size of the holes in the tuyeres 151 and 152, the weaker the wind, and the smaller the hole, the stronger the wind. The stronger the wind, the larger and heavier the material can be selected. The sizes of the holes of the respective tuyeres 151 and 152 are determined based on the wind intensity necessary for pushing the aggregate and foreign matter smaller than the aggregate to be dropped onto the discharge conveyor 160 according to the set sorting conditions out of the discharge conveyor 160 Setting.

The windings of different intensities can be blown through the two tuyeres 151 and 152 to the sorting object and the aggregate to increase the sorting efficiency. If the wind is supplied only with relatively strong wind, the area of the wind will be narrowed, so that the sorting efficiency may be lowered depending on the transporting amount and transporting condition of the aggregate and the sorting object per hour. Accordingly, relatively heavy and large aggregates and foreign substances are selected through the second tuyeres 152 arranged at the lower side, and the first tuyeres 151 arranged at the upper side are provided with winds having a relatively weak intensity So that the sorting efficiency of the second tuyeres 152 can be further increased by sorting relatively light and small aggregates and foreign matter first.

The aggregate discharged to the outside by the discharge conveyor 160 and the aggregate and the foreign matter separated to the outside of the discharge conveyor 160 by the discharge portion 150 are sorted into aggregate (not shown) and foreign matter sorting (not shown) Can be loaded.

3, the controller 170 estimates the size of the aggregate using the vibration control of the vibrator 140 and the magnitude of the impact sensed by the sensing plate 130, The first control panel 154 and the second control panel 156 are controlled such that the sizes of the first and second tuyeres 151 and 152 are adjusted.

In the case of a relatively small or light body, it is preferable to set the intensity of vibration through the vibrator 140 to be large for effective shock detection. Therefore, after vibrating the sensing plate 130 with the exciter 140 through the initial set value, the controller 170 increases the vibration intensity when the magnitude of the sensed impact is relatively small and is inappropriate for the aggregate size estimation A feedback process can be performed.

The magnitude value of the impact sensed through the sensing plate 130 can be transmitted to the controller 170 in real time to be verified and the controller 170 can estimate the size of the aggregate in real time. The first sizing panel 154 and the second sizing panel 156 can be controlled by the controller 170 such that each of the tuyeres 151 and 152 is opened to a predetermined size according to the size of the estimated aggregate .

On the other hand, the surface of the sensing plate 130 and the slanted walls 161 and 162 are coated with 110 to 130 parts by weight of a high-density polyethylene resin (HDPE) based on 100 parts by weight of the polypropylene resin to improve mechanical properties and twisting, (C12H22O11) powder, 1 to 10 parts by weight of talc, 1 to 10 parts by weight of germanium powder, 15 to 25 parts by weight of glass fiber reinforced plastic, 2 to 7 parts by weight of glue, 5 to 10 parts by weight of cork powder, 4 to 8 parts by weight of boehmite (Boehmite, AlO (OH)) and having a specific gravity of 1.02 to 1.10, and a protection against top wear The sheet is attached to the top by the adhesive composition described later.

The plastic composition may include polypropylene resin, high density polyethylene resin (HDPE), talc and germanium powder.

When the above-mentioned plastic composition is used, it is possible to improve the mechanical properties such as heat resistance and durability, to improve the twisting phenomenon, to promote the metabolism by radiating the far-infrared rays and to improve the storage stability of the food stored in the plastic container It is possible to produce an effect of producing a plastic sheet (product) which can be improved.

Polypropylene resin is a thermoplastic resin which is obtained by polymerization of propylene and is known as an environmentally friendly material which is inexpensive in performance and is free from the risk of contact with the contents of foods or cosmetics. It is excellent in properties and thermal properties.

The polypropylene may be at least one selected from a propylene homopolymer, a random copolymer, and a block copolymer. In order to improve the mechanical properties, a homopolymer and a random copolymer are mixed at a weight ratio of 3: 2 .

High-density polyethylene (HDPE) resin is a synthetic resin produced by polymerizing ethylene, and has excellent flowability, rigidity, impact resistance, electrical insulation, moldability, and cold resistance.

The high-density polyethylene resin may have the effect of improving the formability by mixing with the polypropylene resin to strengthen the tensile force in the production of the plastic sheet or the product, and a variety of known products can be used.

Talc improves mechanical properties such as strength and heat resistance of a plastic composition, and it is preferable to use a talc powder having a particle size of 150 to 200 mesh for mixing with a polypropylene resin or the like.

The talc may be used in admixture with other filler components, and may preferably be mixed with the dolomite powder at a weight ratio of 1: 1 to contribute to improvement of the durability of the plastic composition.

Germanium is a silver-white quasi-metal, which has the effect of promoting metabolism by radiating a large amount of far-infrared rays and anions which are beneficial to the human body.

In addition, germanium, due to its semiconducting properties, causes germanium ions (outer electrons) to enter the body when it comes into contact with the skin, thereby enhancing the vitality. When it enters the body, it is released out of the body in 20 to 30 hours together with various harmful substances. There is no side effect at all.

Particularly, when the particles of inorganic germanium come into contact with human skin, semiconductor properties are introduced into the skin tissue by the osmotic action of the outer electron. It has been found that germanium, which penetrates into capillaries in subcutaneous tissue, moves electrons in blood vessels through blood vessels, cleanses blood, normalizes blood, and discharges excess electrons to relieve pain.

The germanium can be used in the form of a powder. It is preferable that the germanium ore is finely cut to 3 cm or less and then the cut germanium ore is pulverized to a particle size of 80 to 100 mesh.

In one embodiment, the plastic composition preferably comprises 110 to 130 parts by weight of high-density polyethylene resin, 170 to 190 parts by weight of talc, and 1 to 10 parts by weight of germanium powder, based on 100 parts by weight of the polypropylene resin.

When the surface of the sensing plate 130 and the inclined walls 161 and 162 is manufactured by using the plastic composition, it is important to control the specific gravity of the plastic composition in order to eliminate the twisting phenomenon and the like. The specific gravity is preferably 1.02 to 1.10 More preferably 1.03 to 1.05. That is, when the high-density polyethylene resin is less than 110 parts by weight or less than 170 parts by weight with respect to 100 parts by weight of the polypropylene resin, the mechanical properties such as durability are restricted If the high-density polyethylene resin is more than 130 parts by weight or the talc is more than 190 parts by weight based on 100 parts by weight of the polypropylene resin, the specific gravity of the plastic composition is increased and the moldability may be deteriorated.

If the amount of the germanium powder is less than 1 part by weight with respect to 100 parts by weight of the polypropylene resin, far infrared ray emission effect due to germanium is difficult to manifest. If the amount is more than 10 parts by weight, It can become bad.

In one embodiment, the plastic composition described above may further comprise glass fiber reinforced plastic to enhance impact resistance.

Fiberglass Reinforced Plastic (FRP) is a material in which glass-based minerals are used as main materials and aromatic nylon fibers and thermosetting resins are combined with glass-based minerals.

The glass-based mineral may be at least one selected from the group consisting of silica sand, limestone, feldspar, and soda ash, but is not limited thereto.

As the thermosetting resin, various known thermosetting resins can be used, and preferably, polyester or epoxy resin can be used.

Glass fiber reinforced plastics can be produced by mixing materials such as glass-based minerals and putting them into a melting furnace. Each air layer sealed between glass fibers functions as a heat insulating layer, so that it is excellent in incombustibility, sound absorption property and workability.

Also, it is stronger than iron, lighter than aluminum, and does not rust. It has excellent nonflammability and is not deformed by heat and is easy to process.

At this time, it is preferable to add glue to improve the mixing property with glass fiber reinforced plastic (pellet type) and PVC.

Glue is a substance that solidifies the liquid of an animal such as an animal's skin, intestines, bones, etc., and solves problems such as the release of environmental hormones while improving the binding force of each component.

The glass fiber reinforced plastic and the glue are preferably contained in an amount of 15 to 25 parts by weight and 2 to 7 parts by weight, respectively, based on 100 parts by weight of the polypropylene resin. If the glass fiber reinforced plastic and the glue are less than the above range, If it exceeds the range, the product may be cracked during production and is uneconomical.

In one embodiment, the cork powder may be further included to improve the elasticity of the surface of the sensing plate 130 and the inclined walls 161 and 162 using the plastic composition.

The cork powder can be prepared by removing the shell of oak oak, and then crushing it. For the cork powder to be mixed with polypropylene resin or the like, it is preferable to use fine pulverized particles which are sieved through a mesh of 400 mesh or more.

The cork powder is preferably contained in an amount of 5 to 10 parts by weight based on 100 parts by weight of the polypropylene resin. When the cork powder is less than 5 parts by weight, the degree of improvement of the elasticity is insignificant. When the cork powder is more than 10 parts by weight, The voids formed in the inside during manufacturing may become large and the durability may be weakened.

In addition, sucrose (C12H22O11) powder may be further added to improve the mixing property of the cork powder and other ingredients.

The sucrose not only smoothes the pores formed between the cork powders but also tends to be viscous in the process of mixing with PVC and the like, which can catch the molecules causing the problem of bad odor, which can contribute to solving the problem of bad odor.

The sucrose is preferably a powder that has been passed through a 500-mesh net, and is preferably contained in an amount of 1 to 4 parts by weight based on 100 parts by weight of the polypropylene resin. When sucrose is less than 1 part by weight, If the amount is more than 4 parts by weight, it is not only economical but also may weaken the mechanical properties of the product.

In one embodiment, the plastic composition may further comprise a white powder. Potassium alum (potassium aluminum sulfate, AlK (SO4) 2 12H2O) can be used for alum, and it can be obtained from natural alum.

Concretely, it can be produced by dissolving alunculus in water and filtering it, then breaking it, and cooling it if irregularly shaped crystals are formed. The alumina is preferably contained in an amount of 2 to 5 parts by weight based on 100 parts by weight of the polypropylene resin. When the alumina content is less than 2 parts by weight, the alumina effect is insignificant.

In one embodiment, the plastic composition according to the present invention may further comprise boehmite (Boehmite, AlO (OH)) to improve antimicrobial properties.

Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Among them, boehmite is excellent in crystallinity, excellent in thermal stability and chemical stability, structurally neutral, It is preferable to use an excellent? -Behoeite.

The γ-boehmite can be produced by supercritical synthesis of only water (pure water) and aluminum (Al). It is preferable that boehmite is included in 3 to 8 parts by weight with respect to 100 parts by weight of the polypropylene resin. If the content of boehmite is less than 3 parts by weight, it is difficult to exhibit the antimicrobial effect to be achieved. There is a possibility that the mixing property of the resin is deteriorated.

Hereinafter, the composition and effect of the plastic composition according to the present invention will be described in more detail with reference to specific examples and comparative examples. However, this embodiment is intended to explain the present invention more specifically, and the scope of the present invention is not limited to these embodiments.

[Example 1]

180 kg of polypropylene resin, 200 kg of high density polyethylene resin (HDPE), 310 kg of talc and 15 kg of germanium powder were mixed to prepare a plastic composition.

[Example 2]

And 36 kg of glass fiber reinforced plastic and 9 kg of glue were further mixed to prepare a plastic composition.

[Example 3]

9 kg of cork powder, 5 kg of sucrose powder, 5 kg of white powder, and 9 kg of gamma-boehmite were further mixed to prepare a plastic composition.

[Comparative Example 1]

Was prepared in the same manner as in Example 1, except for talc.

[Experimental Example 1: Evaluation of impact resistance]

A specimen (20 cm * 30 cm, thickness 20 mm) was prepared using the plastic compositions of Examples 1 to 3 and Comparative Example 1, and a weight of 3 kg was dropped at a height of 2 m. The degree of breakage of each specimen was measured, The results are shown in Table 1 below.

As can be seen from the above Table 1, it was found that the examples including the talc were superior in impact resistance as compared with Comparative Example 1 which did not include talc. In particular, in Examples 2 and 3 containing glass fiber reinforced plastics, the best results were obtained.

[Experimental Example 2: Evaluation of heat resistance]

The specimen of Experimental Example 1 was heated for 3 hours in a hot air circulating heating furnace maintained at 80 ° C, and yellowing degree was visually observed. The results are shown in Table 2 below.

As can be seen from Table 2, in Examples 1 to 3, yellowing portions were hardly observed unlike Comparative Example 1. As a result, it was found that the heat resistance of the example was much better than that of the comparative example 1.

[Experimental Example 3: Evaluation of antimicrobial activity]

Example 1, Example 3 and Comparative Example 1 were subjected to a test for antibacterial activity (JIS Z 2801). Aspergillus niger ATCC 9642 (fungus) was used as the test strain and the antibacterial activity (antibacterial activity value) was evaluated and shown in Table 3 below.

The antimicrobial activity value refers to a value obtained by evaluating the degree of antimicrobial activity by comparing the number of strains cultured for a certain period of time. When the value is 1 or more, 90% or more of the strains are present, 2 or more are 99% , More than 99.99% of the strain is over 4, and more than 5 is more than 99.999% of the strain is killed.

As can be seen from the above Table 3, it was predicted that the antibacterial activity of Example 3 including gamma-boehmite was much better than those of other cases.

The protective sheet is made of the same plastic composition as the surface of the sensing plate 130 and the inclined walls 161 and 162 and is made of polyvinyl alcohol (PVA) 1 to 30 parts by weight per 30 to 90 parts by weight of the ethylene vinyl acetate (EVA) 10 to 30 parts by weight of water, 5 to 30 parts by weight of calcium carbonate, 0.1 to 1 part by weight of a surfactant, 1 to 20 parts by weight of a thixotropic imparting agent, 3 to 7 parts by weight of sodium silicate, 3 to 7 parts by weight of molybdenum disulfide (MoS2) Toluene-diisocyanate (TDI), hydrogenated TDI, trimethyl propane-TDI (trimethyl propane-TDI), 5 to 10 parts by weight of water, TDI), tripe- nylmethane-triisocyanate (TTI), diphenylmethane-4,4-diisocy- anate (MDI), hydrogenated MDI, and hexamethylene-diisocyanate -diisocyanate, < / RTI > HDI) And the surface of the sensing plate 130 and the inclined walls 161 and 162 is prevented from being worn by the adhesive composition comprising an isocyanate compound and consisting of 1 to 20 parts by weight of the curing agent, And is attached to the top of the surface of the plate 130 and the inclined walls 161 and 162.

The adhesive composition used for attaching the protective sheet is an adhesive composition comprising a main component and a curing agent, wherein the main component comprises 30 to 90 parts by weight of an ethylene vinyl acetate (EVA) resin, 1 to 30 parts by weight of polyvinyl alcohol (PVA) 10 to 30 parts by weight of calcium carbonate, 5 to 30 parts by weight of calcium carbonate, 0.1 to 1 part by weight of a surfactant and 1 to 20 parts by weight of a thixotropic agent, and the curing agent may include an isocyanate compound.

The adhesive composition is a water-soluble two-component adhesive composition composed of a subject and a curing agent, which can be applied and cured to produce an adhesive sheet or an adhesive. The adhesive composition is excellent in physical properties such as adhesiveness and heat resistance Wood board such as plywood, inorganic board such as magnesium board, PVC, and the like.

The subject basically comprises an ethylene vinyl acetate (EVA) resin, polyvinyl alcohol (PVA), water, calcium carbonate, a surfactant and a thixotropic agent, the ethylene vinyl acetate resin being the main component of the subject, The strength of the adhesive sheet or adhesive can be kept constant.

Conventionally, an epoxy resin is used as a main component of an adhesive sheet or an adhesive. However, in the case of an adhesive sheet or an adhesive using an epoxy resin, volatile organic compounds such as benzene toluene are released to adversely affect the environment and human body.

However, the adhesive composition of the present invention can solve problems such as environmental problems by excluding an epoxy resin.

Polyvinyl alcohol (PVA) has a role of improving the heat resistance, water resistance and adhesiveness of an adhesive sheet or adhesive to be produced.

The polyvinyl alcohol is preferably contained in an amount of 1 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. When the amount of the polyvinyl alcohol is less than 1 part by weight, it is difficult to improve the heat resistance, , The relative content of ethylene vinyl acetate may be reduced and the cohesive force of the adhesive sheet or adhesive may be weakened.

Further, in the present invention, antimony oxide and zirconium oxide may be used together with polyvinyl alcohol in order to supplement the functionality of polyvinyl alcohol when used in an ondol floor or the like.

Antimony oxide and zirconium oxide are materials capable of enhancing the heat resistance of the adhesive sheet or adhesive to be produced and are preferably contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. The effect of enhancing is insignificant, and when it exceeds the above range, it is uneconomical.

Water can be used as a solvent for the subject.

INDUSTRIAL APPLICABILITY The present invention has the effect of solving the environmental pollution problem without using a volatile organic solvent unlike the conventional adhesive sheet or adhesive.

Water is preferably contained in an amount of 10 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. When the amount of water is less than 10 parts by weight, ethylene vinyl acetate resin and the like can not be effectively dissolved. The strength of the adhesive sheet or the adhesive may be lowered.

Calcium carbonate modulates the viscosity of the adhesive composition and reduces shrinkage upon curing.

The calcium carbonate is preferably contained in an amount of 5 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate (EVA) resin. When the amount of calcium carbonate is less than 5 parts by weight, sufficient shrinkage does not occur during curing, If the amount is more than 30 parts by weight, the viscosity may become too tight and the productivity may be deteriorated.

In addition, the present invention may use various materials such as wormwood and clay to replace calcium carbonate. For example, dolomite and / or talc may be used.

In order to improve the mechanical properties, dolomite and talc are preferably mixed at a weight ratio of 1: 1, and the powder preferably has a particle size of 150 to 200 mesh, The use of the finely pulverized powder to improve the mixing property with other components such as ethylene vinyl acetate resin.

The surfactant is used in order to reduce the surface tension when mixing the adhesive composition and to improve the coating property.

The surfactant is preferably contained in an amount of 0.1 to 1 part by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin.

As the surfactant, known nonionic surfactants and anionic surfactants can be used, but in order to effectively reduce the surface tension, it is preferable to use a gemini type sulfonic acid type surfactant containing an alkyl chain having 8 to 14 carbon atoms .

The thixotropic agent prevents the adhesive composition from flowing down by suppressing the separation phenomenon between the subject and the curing agent when the adhesive composition is applied to the adhesive sheet or the adhesive, and it is possible to use various known various substances such as silica, acryl copolymer and the like But it is preferable to use a clay.

Clay is an aggregate of fine hydrated silicate minerals. It refers to a material that is mixed with an appropriate amount of water and kneaded to produce plasticity, exhibits rigidity when dried, and sintered when baked at a high temperature.

Specifically, at least one powder selected from the group consisting of kaolinite, fumed silica and bentonite may be used, but in order to obtain the best effect, it is preferable to use a mixture of fumed silica and bentonite in a weight ratio of 1: 1.

The thixotropic agent is preferably contained in an amount of 1 to 20 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. When the thixotropic imparting agent is less than 1 part by weight, the flowability can not be sufficiently controlled, If the amount is more than 50 parts by weight, the flowability may be excessively vanished and the productivity may be lowered.

In addition, the subject may further include sodium silicate to improve the adhesive strength of the adhesive sheet or adhesive to be produced.

Unlike conventional adhesives, sodium silicate does not cause pollution and is environmentally friendly and has excellent adhesion.

The sodium silicate is preferably contained in an amount of 3 to 7 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin based on the solid content. When the amount of the sodium silicate is less than 3 parts by weight, If it exceeds 7 parts by weight, miscibility with other components may be deteriorated.

The subject may further include molybdenum disulfide to improve the abrasion resistance of the adhesive sheet or adhesive to be produced.

Molybdenum disulphide (MoS2) is found in thin veins in minerals and is mined and used as a lubricant.

Molybdenum disulfide (MoS2) has inherent characteristics of a hexagonal crystal structure in which shear is easily generated, such as graphite, but the lubricating action is superior to that of graphite.

The molybdenum disulfide is preferably contained in an amount of 1 to 5 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin based on the solid content. When the amount of the molybdenum disulfide is less than 1 part by weight, the abrasion resistance can not be effectively improved. If it is exceeded, it may rather deteriorate the adhesive strength.

At this time, copper powder may be mixed with molybdenum disulfide.

Further, the subject may further include a flame retardant agent to improve the flame retardancy of the adhesive sheet or adhesive to be produced.

The flame retardant is preferably contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the ethylene vinyl acetate resin. When the flame retardant is less than 1 part by weight, the degree of improvement of the flame retardancy is insignificant. In addition, there is a fear that the miscibility with other components may deteriorate.

The flame retardant can be a white powder, which can be a potassium alum (potassium aluminum sulfate, AlK (SO 4) 2 12H 2 O) and can be obtained from natural alum.

Concretely, it can be produced by dissolving alunculus in water and filtering it, then breaking it, and cooling it if irregularly shaped crystals are formed.

In addition, the subject may further include aluminum hydroxide to improve the antibacterial property of the adhesive sheet or adhesive to be produced.

As the aluminum hydroxide, boehmite (AlO (OH)) is preferably used.

Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Among them, boehmite is excellent in crystallinity, excellent in thermal stability and chemical stability, structurally neutral, It is preferable to use an excellent? -Behoeite.

The γ-boehmite can be produced by supercritical synthesis of only water (pure water) and aluminum (Al).

It is preferable that aluminum hydroxide is contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate. When the content of aluminum hydroxide is less than 5 parts by weight, it is difficult to exhibit the antimicrobial effect to be achieved, There is a possibility that the miscibility with other components may be impaired.

As the curing agent, those containing an isocyanate compound can be used.

The isocyanate compound has excellent solubility in water, and the curing agent can be uniformly mixed to the subject to maintain the proper viscosity and hardness, thereby shortening the curing time, and prolonging the pot life when mixing the curing agent with the curing agent, It has a remarkable improvement.

The isocyanate compound is preferably a compound containing at least two isocyanate groups in one molecule, and is preferably a compound containing at least two isocyanate groups in a molecule, such as toluene-diisocyanate (TDI), hydrogenated TDI, trimethylpropane-TDI Tripe- nylmethane-triisocyanate (TTI), diphenylmethane-4,4-diisocy- anate (MDI), hydrogenated MDI, or hexamethylene-diisocyanate , And it is preferable that the curing agent is included in an amount of 1 to 20 parts by weight based on 100 parts by weight of the subject.

The above-mentioned adhesive composition is prepared by mixing a subject and a curing agent to prepare an aqueous two-part adhesive composition, and then applying and curing the composition to a work site. If necessary, the adhesive composition may be partially or completely removed, And may further contain a dispersing agent, an antifoaming agent, an antiseptic agent, a thickening agent and the like within the range not hindering the object of the present invention, and may further include a coloring component to realize various colors of the adhesive sheet or adhesive to be produced .

Hereinafter, the composition and effect of the adhesive composition according to the present invention will be described in more detail through specific examples and comparative examples. However, this embodiment is intended to explain the present invention more specifically, and the scope of the present invention is not limited to these embodiments.

[Example 4]

80 parts by weight of ethylene vinyl acetate, 20 parts by weight of polyvinyl alcohol, 25 parts by weight of water, 10 parts by weight of calcium carbonate, 1 part by weight of a surfactant and 5 parts by weight of a thixotropic agent were mixed to prepare a subject. Toluene-diisocyanate and 25 parts by weight of a curing agent containing toluene-diisocyanate (TDI) were mixed and cured to prepare an adhesive sheet or an adhesive.

At this time, a gemini surfactant having 8 carbon atoms was used as a surfactant. The overall process of synthesis of the surfactant started with the reaction of diamine with 1-bromoalkane. 0.1 mole of N, N, N ', N'-tetramethyl-1,3-diaminopropane (N, N', N'- -bromooctane) was added to 300 g of acetonitrile and stirred for 30 minutes. The solution was refluxed at 353 K for 12 hours, and then the acetonitrile solvent was removed using a rotary evaporator. 500 g of diethylether was added to the resulting product to recrystallize the product. After filtering, it was washed with 500 g of diethyl ether and unreacted impurities were removed.

The product thus obtained was treated in a 323 K vacuum oven for 12 hours to remove residual solvent to prepare a gemini surfactant.

[Example 5]

Except that 5 parts by weight of atomium oxide and 5 parts by weight of zirconium oxide were further added in the form of powder to the subject.

[Example 6]

Except that 5 parts by weight of sodium silicate, 3 parts by weight of molybdenum disulfide, 3 parts by weight of alumina and 8 parts by weight of? -Behohexite were further added in powder form to the subject. Respectively.

[Comparative Example 2]

A comparative example 2 is a conventional epoxy ondol floor adhesive (SEP-4300, manufactured by Samchang Korea).

[Experimental Example 4: Adhesion Test]

An adhesive strength test (KS F 4715) was carried out for the Example and Comparative Example 2, and the results are summarized in Table 4 below.

The adhesion strength of the LH construction was 0.8 N / mm 2 or more as the acceptance standard, and all of the examples 4 to 6 and the comparative example 2 satisfied the acceptance criteria. However, it was found that the bonding strengths of Examples 4 to 6 were superior to those of Comparative Example 2.

[Experimental Example 5: Evaluation of heat resistance]

The adhesive sheets or adhesives of Examples 4 to 6 and Comparative Example 2 were heated for 8 hours in a hot-air circulating heating furnace maintained at 80 캜, and the yellowing degree was visually observed. The results are shown in Table 5 .

As can be seen from Table 5, in Examples 4 to 6, yellowing portions were hardly observed unlike Comparative Example 2. As a result, it was found that the heat resistance of the example was much better than that of Comparative Example 2.

[Experimental Example 6: Evaluation of antimicrobial activity]

The adhesive compositions of Example 6 and Comparative Example 2 were subjected to an antibacterial activity test (JIS Z 2801). Aspergillus niger ATCC 9642 (fungus) was used as a test strain and the antibacterial activity (antibacterial activity value) was evaluated and shown in Table 6 below.

The antimicrobial activity value refers to a value obtained by evaluating the degree of antimicrobial activity by comparing the number of strains cultured for a certain period of time. When the value is 1 or more, 90% or more of the strains are present, 2 or more are 99% , More than 99.99% of the strain is over 4, and more than 5 is more than 99.999% of the strain is killed.

As can be seen from the above Table 6, Example 6 including gamma-boehmite showed excellent antimicrobial activity as compared with Comparative Example 2.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the present invention is not limited to those embodiments and various changes and modifications may be made without departing from the scope of the present invention. . Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

110: Feeding conveyor
120: Wind power generating unit
130: sensing plate
140: Exciter
150:
151: First tuyere
152: second tuyere
153: first fixed panel
154: first resize panel
155: second fixed panel
156: 2nd resize panel
160: Discharge conveyor
161, 162: inclined wall
170: Control device
100: Ventilating type sorting device

Claims (2)

An input conveyor 110 for inputting an aggregate and a sorting object;
A wind power generation unit 120 for generating wind power;
A discharge conveyor 160 for discharging the aggregate material transferred by the charging conveyor 110 and falling; And
And a blowing part (150) disposed on the discharge conveyor (160) for blowing a falling object to the sorting object to scatter the sorting object,
The aggregate conveyed by the input conveyor 110 is dropped onto the discharge conveyor 160 through the upper inclined surface and the aggregate conveyed by the aggregate and the sorting object A sensing plate 130 for sensing the temperature of the liquid.
A vibrator 140 disposed below the sensing plate 130 for vibrating the sensing plate 130 up and down;
A first tuyere 151 disposed in the aggregate falling section between the sensing plate 130 and the discharge conveyor 160 and configured to discharge wind sideways by the wind force transmitted from the wind power generating unit 120, A first sizing panel 154 and a second sizing panel 156 for adjusting the size of each hole of the tuyeres 152; And
The vibration of the vibrator 140 is controlled and the weight of the aggregate and the sorting object is calculated on the basis of the magnitude of the impact sensed by the sensing plate 130. The weight of the aggregate and the sorting object, The first sizing panel 154 and the second sizing panel 154 are adjusted so as to open the first tuyer 151 and the second tuyere 152 at a predetermined size according to the estimated size, Further comprising a controller (170) for controlling the panel (156)
On both sides of the discharge conveyor 160, oblique walls 161 and 162 for preventing the falling aggregate from being separated are formed,
The size of the hole of the first tuyere 151 is adjusted to be larger than the size of the hole of the second tuyere 152,
The first tuyere 151 is disposed on the upper side of the second tuyere 152,
A protective sheet is attached to the upper surface of the sensing plate 130 by an adhesive composition,
The adhesive composition comprises
Wherein the adhesive composition comprises a base and a curing agent,
The subject matter is a composition comprising 30 to 90 parts by weight of an ethylene vinyl acetate (EVA) resin, 1 to 30 parts by weight of polyvinyl alcohol (PVA), 10 to 30 parts by weight of water, 5 to 30 parts by weight of calcium carbonate, 0.1 to 1 part by weight of a surfactant And from 1 to 20 parts by weight of a thixotropic agent,
The polyvinyl alcohol is contained in an amount of 1 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin,
Antimony oxide and zirconium oxide are contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin,
The sodium silicate is contained in an amount of 3 to 7 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin on a solid basis,
Molybdenum disulfide is contained in an amount of 1 to 5 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin based on the solid content,
The flame retardant is a white powder, and the flame retardant is contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the ethylene vinyl acetate resin,
Aluminum hydroxide is contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate,
The curing agent containing an isocyanate compound is contained in an amount of 1 to 20 parts by weight based on 100 parts by weight of the subject.
Ventilated sorting apparatus (100).
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