KR101929052B1 - Cone crusher - Google Patents

Abstract

A cone crusher according to an embodiment of the present invention includes a cylindrical upper frame having an opening for allowing an aggregate supplied from an aggregate supply unit having an inclined surface formed on an upper surface to be inserted therein, a cylindrical lower frame having a pulverizing means for pulverizing the aggregate inserted through the upper frame to a predetermined size or less and a discharge means for discharging the pulverized aggregate to the outside, and a release spring installed at predetermined intervals along the outer circumferential surface of the lower frame and configured to reduce a vertical load generated in an aggregate pulverization process.

Description

CONCRESSER {CONE CRUSHER}

The present invention relates to a cone crusher, and more particularly, to a cone crusher for crushing a large agglomerate into a small particle of rock or sand.

Generally, the collecting process of aggregate has a crushing process in which rocks are exploded using explosives such as dynamite in a quarry or a mine, and then crushed to a proper size required by the user using a crusher.

The crusher includes a jaw crusher for crushing a relatively large mass of aggregate, and a cone crusher for crushing aggregate crushed from the jaw crusher to a smaller size.

Among them, the cone crusher is an apparatus for crushing aggregate put between a mentee of a cone shape and a fixed cone cave and an aggregate put between a mentally rotating cement and a cone cave by friction and pressure, Is used mainly for producing recycled aggregate of small size from the above.

However, in the conventional cone crusher, since the crushed aggregate particles are uneven, the crushing process using the cone crusher must be performed several times, and only the function of crushing the aggregate is performed, so that an additional process such as sorting of foreign matters must necessarily be carried out There is a problem.

Accordingly, there is a growing need for the development of a cone crusher that produces high-quality recycled aggregate while shortening the production process of the recycled aggregate.

Korean Patent No. 10-1402595 Korean Patent No. 10-0999193

One aspect of the present invention provides a cone crusher in which foreign matter is automatically filtered in a pulverizing process while pulverizing aggregate and discharging only a predetermined amount of sand or less.

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

A cone crusher according to an embodiment of the present invention includes a cylindrical upper frame having an opening for allowing an aggregate supplied from an aggregate supplying means having an inclined surface formed on an upper surface to be inserted therein, A lower frame having a cylindrical shape and provided with discharge means for discharging the pulverized aggregate to the outside, and a vertical load generated at the predetermined intervals along the outer peripheral surface of the lower frame, And a release spring for reducing the pressure.

Wherein the crushing means comprises a rotating shaft which is installed in a direction perpendicular to the paper surface and which eccentrically rotates about a central axis in the longitudinal direction, a cone-shaped core coupled to one end of the rotating shaft, a mantle formed on an outer circumferential surface of the core, And a filtering member installed on a cone formed along the inner circumferential surface of the mantle and the lower frame, wherein the filtering member is made of an elastic material or a shape memory alloy material Wherein the upper surface is coupled along the circumference of the cone, the lower surface is coupled along the circumference of the mantle, and the side surface is a cylindrical structure having a mesh net, When the mantle and the cone cave come close to a predetermined nearest distance at a specific position in the course of eccentric rotation, The mesh network is closed as the upper surface and the lower surface disposed at a specific position approach each other and the side surface is crushed and the mantle and the cone cave are moved to different positions The upper surface and the lower surface are spaced apart from each other, and as the side surface is expanded, the mesh network is opened so that the aggregated material crushed at the specific position is discharged through the mesh net, The aggregate material is filtered to filter the metallic foreign substances contained in the aggregate in the crushing process of the aggregate material and to prevent the aggregate material, which is supplied to another region having a distance greater than the closest distance, The size of the mesh network may be the same as the closest distance.

According to one aspect of the present invention, it is possible to pass only sand of a predetermined size or less to produce sand having a predetermined particle size, and a metal material is adsorbed on the filtering member during the crushing process, You can filter.

1 is a perspective view showing a schematic shape of a cone crusher according to an embodiment of the present invention.
2 is a sectional view of the cone crusher shown in Fig.
3 to 5 are views showing specific shapes of the filtering member provided in the cone crusher according to the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

1 is a perspective view showing a schematic shape of a cone crusher according to an embodiment of the present invention.

The cone crusher 1 according to the present invention is an apparatus for crushing and discharging an aggregate material fed from an aggregate material supply means 10 and crushing large-sized construction waste such as concrete or brick to form recycled aggregate having small particles such as sand Can be produced.

Particularly, the cone crusher 1 according to the present invention can always pulverize and discharge the aggregate at a predetermined size, that is, a predetermined size or less in the process of pulverizing the aggregate. In this process, the metallic impurities contained in the aggregate It can be automatically filtered.

Specifically, the cone crusher 1 according to an embodiment of the present invention includes an upper frame 100, a lower frame 200, and a release spring 300.

The upper frame 100 is a cylindrical member, and the aggregate for generating the circulating aggregate can be introduced into the cone crusher 1. For this purpose, an opening (injection hole) for injecting the aggregate supplied from the aggregate supplying means 10 having the inclined surface formed therein into the upper surface of the upper frame 100 may be formed.

The lower frame 200 is a cylindrical member connected to the lower end of the upper frame 100. The lower frame 200 may include crushing means for crushing the aggregate charged through the upper frame 100 to a predetermined size or less, driving means for driving the crushing means, and discharge means for discharging the crushed aggregate to the outside have. Details related to this will be described later.

The release springs 300 are installed at regular intervals along the outer circumferential surface of the lower frame 200 and are capable of reducing the vertical load generated during the aggregate crushing process. That is, the release spring 300 is provided to prevent the cone crusher 1 from being damaged by the vertical load generated in the crushing process of the aggregate, Can be absorbed.

In addition to this, although not shown, the cone crusher 1 according to the present invention comprises a conveyor for conveying the crushed aggregate to a specific position, a conveyor for conveying the crushed aggregate to a specific position, A fluid supply hose, and the like.

As described above, the cone crusher 1 according to the embodiment of the present invention is provided in a cylindrical shape as a whole, so that the agglomerate introduced by the eccentric rotation of the rotation shaft provided therein can be uniformly crushed, and the vertical load So that the durability of the cone crusher 1 can be improved.

Hereinafter, the concrete configuration and function of the cone crusher 1 shown in Fig. 1 will be described with reference to Fig. 2 and Fig.

2 is a sectional view of the cone crusher 1 of Fig.

As described above, the crushing means may be formed inside the lower frame 200.

Specifically, the crushing means includes a rotating shaft 210 rotating in an eccentric direction, a core 220 in a cone shape coupled to one end of the rotating shaft 210, a mantle 225 formed on an outer circumferential surface of the core 220, And a head 227 formed on the rotating shaft 210 to uniformly disperse the aggregate.

The rotary shaft 210 is installed in a direction perpendicular to the paper surface, and can be eccentrically rotated about a central axis in the longitudinal direction. The rotary shaft 210 may be eccentrically rotated with respect to the central axis by receiving a driving force from a driving motor 215 coupled to the barbell gear 213. Accordingly, the mantle 225 protruding from the outer circumferential surface of the rotary shaft 210 can also be eccentrically rotated with respect to the cone 230 formed on the inner surface of the lower frame 200.

At this time, the mantle 225 is eccentrically rotated so as to approach a predetermined distance from one of the points of the cone 230. In this way, the mantle 225 is rotated by the rotation axis 210, The aggregate charged into the approaching position can be crushed.

The head 227 formed on the rotary shaft 210 disperses the aggregate material uniformly supplied through the upper frame 100 so that the crushing process is performed in all areas between the mantle 225 and the cone cave 230 along the eccentric rotation . That is, only the aggregate that is smaller than the separation distance between the mantle 225 and the cone cave 230 falls down to the bottom of the mantle 225, so that only the aggregated aggregate can be discharged.

At this time, the cone crusher according to the prior art has a problem that the particle size of the discharged aggregate is not uniform. The separation distance d1 between the mantle 225 and the cone 230 on the left side L is larger than the separation distance d2 on the right side R as shown in FIG. ).

In this case, as the mantle 225 approaches the cone 230 at the left side (L), the crushing process due to friction and pressure occurs, and the aggregate can be crushed so as to have particles smaller than the approach distance d1 . On the other hand, at the right side R, the crushing process does not occur as the cone cave 230 and the mantle 225 are separated from each other. At this time, when aggregate smaller than the separation distance (d2, d2 > d1) on the right side (R) is input, the aggregate falls down without being crushed. Accordingly, the aggregate discharged through the right (R) L) is discharged with different particle sizes.

In order to solve such a problem, the cone crusher 1 according to an embodiment of the present invention further includes a filtering member 240. In this regard, the description will be made with reference to Figs. 3 to 5 together.

3 to 5 are views showing specific shapes of the filtering member 240 of FIG.

The filtering member 240 may be formed of a cylindrical mesh structure having open upper and lower surfaces. The lower surface of the filtering member 240 may be coupled to the mantle 225 and the upper surface may be coupled with the cone 230.

At this time, the filtering member 240 may be made of a material or a structure having flexibility. For example, the filtering member 240 may be made of an elastic material or a shape memory alloy material.

4, the eccentric rotation of the rotating shaft 210 causes the portion 225 of the mantle 225 adjacent to the cone cave 230 to move in a direction As the upper and lower surfaces of the formed filtering member 240 approach each other, the side becomes distorted, and the mesh net formed in the corresponding region L can be closed. When the rotating shaft 210 is eccentrically rotated to the right region R, the crushed side face portion is unfolded while the upper face and the lower face of the filtering member 240 are separated from each other. As a result, It can be passed through a mesh network and discharged.

Since the mesh size of the filtering member 240 according to the present invention is the same as the minimum separation distance d1 between the cone 230 and the mantle 225, The aggregate that is supplied to the right side R is not filtered by the filtering member 240 and is not dropped to the lower portion of the mantle 225 because aggregates larger than the mesh size are filtered by the filtering member 240. Thereafter, when the rotating body 210 eccentrically rotates to the right region R, the aggregate that has not been passed by the filtering member 240 can be crushed.

The filtering member 240 disposed in a cylindrical shape along the outer circumferential surface of the cone cage 230 and the mantle 225 is formed in a region where the cone 230 and the mantle 225 are close to each other, And the aggregate exceeding the maximum proximity distance d1 between the cone 230 and the mantle 225 can be prevented from passing through the remaining area. Accordingly, the cone crusher 1 according to the present invention provided with the filtering member 240 has the effect that only the pulverized aggregate of a predetermined size (mesh mesh size or less) can be always discharged regardless of the position of the eccentric rotation do.

Meanwhile, as shown in FIG. 5, the filtering member 240 may receive a current to generate a magnetic force. As described above, since the filtering member 240 is made of a metal material such as an elastic material or a shape memory alloy, a magnetic field may be formed on the surface of the filtering member 240 when a current is applied.

Accordingly, in the crushing process of the aggregate, the foreign substance of the metallic material contained in the aggregate adheres to the side surface of the filtering member 240 having the magnetic field, and the crushed aggregate material of the non-metallic material does not affect the filtering member 240 .

The filtering member 240 may receive current in various manners, for example, be supplied with current generated during operation of the driving motor 215, or may be supplied with power from an external power source. The user can maximize the filtering function of the metallic foreign matter by adjusting the intensity of the current applied to the filtering member 240 based on the kind, size, and the like of the metallic foreign substance contained in the aggregate.

The cone crusher 1 equipped with the filtering member 240 may have the following effects.

Conventionally, an aggregate is put into a cone crusher to crush an aggregate, and then the crushed aggregate is conveyed by using a conveyor belt or the like. In this process, a bar or scraper is separated, A post-treatment process for sorting the aggregates having the above-mentioned properties was inevitably accompanied. That is, according to the related art, additional processes are additionally required after the pulverizing process to produce the recycled aggregate, which is costly and time consuming.

However, the cone crusher 1 according to the present invention has the effect of automatically performing the above-described addition process in the process of crushing aggregate due to the filtering member 240 installed therein, so that the high- Can be produced.

Meanwhile, the cone crusher 1 according to the present invention may be provided with a portion that can be damaged by an external force such as friction or impact, for example, a discharge portion formed at a distance between the cone cave 230 and the mantle 225, Can be formed.

The plastic composition according to one embodiment of the present invention includes polypropylene resin, high density polyethylene resin (HDPE), talc and germanium powder. Thus, the cone crusher 1 according to the present invention can improve the mechanical properties such as heat resistance and durability, and the twisting phenomenon 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 does not have a risk of being in contact with the contents of foods or cosmetics. The polypropylene resin is excellent in chemical resistance, mechanical properties , And excellent in thermal properties. The polypropylene may use at least one selected from a propylene homopolymer, a random copolymer and a block copolymer, but a homopolymer and a random copolymer are mixed in a weight ratio of 3: 2 to improve mechanical properties .

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 be mixed with the above-mentioned polypropylene resin to improve the moldability by reinforcing the tensile force in the production of the plastic sheet or the product, and a variety of known products may be used.

The talc improves the mechanical properties such as the strength and heat resistance of the plastic composition, and it is preferable to use a talc powder having a particle size of 150 to 200 mesh for mixing with 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 silvery white metal, which has the effect of promoting metabolism by emitting a large amount of far infrared rays and anions which are beneficial to the human body. Also, due to its semiconducting nature, germanium has a function of increasing the vitality of germanium ions (outer electrons) when they come into contact with the skin. When entering the body, it is released out of the body within 20 ~ 30 hours with various harmful substances, so there is no poisoning or side effects 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 tissues, moves electrons in the blood vessels through the blood vessel walls, performs blood purification, normalizes blood, and discharges excess electron flow to relieve pain. The germanium can be used in the form of 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 per 100 parts by weight of the polypropylene resin. When the plastic sheet is produced by using the plastic composition, it is important to control the specific gravity of the plastic composition in order to eliminate the twisting phenomenon. The specific gravity is preferably 1.02 to 1.10, more preferably 1.03 to 1.05. That is, when the content of the high-density polyethylene resin is less than 110 parts by weight or the talc is less than 170 parts by weight based on 100 parts by weight of the polypropylene resin, mechanical properties such as durability and the like are limited. Is more than 130 parts by weight or the talc is more than 190 parts by weight, there is a possibility that 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 rays emission effect due to germanium is difficult to manifest. If the amount is more than 10 parts by weight, .

In one embodiment, the plastic composition described above may comprise glass fiber reinforced plastic to enhance impact resistance. Fiberglass Reinforced Plastic (FRP) is a material made mainly of glass-based minerals and a combination of glass-based minerals with aromatic nylon fibers and thermosetting resins. 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, a polyester or an epoxy resin can be used. Glass fiber reinforced plastics can be produced by mixing materials such as glass-based minerals and putting them in a melting furnace. Each air layer sealed between the glass fibers functions as a heat insulating layer, so that it is excellent in nonflammability, sound absorption properties and workability. It is also stronger than iron, lighter than aluminum, and does not rust. Also, it is excellent in nonflammability and is not deformed by heat and is easy to be processed. 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 organs such as animal's skin, intestines, bones, etc., and can solve the 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 based on 100 parts by weight of the polypropylene resin. If the amount is less than the above range, the impact resistance strengthening and embossing may be deteriorated, and if it exceeds the above range, a cracking phenomenon may occur during production of the product, which is uneconomical.

In one embodiment, the plastic composition according to the present invention may comprise cork powder to improve the elasticity. 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, voids formed in the inside of the product during manufacture may be increased and 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 powder, but also tends to become viscous during the mixing process with the PVC, so that it can catch the molecules that cause 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, the effect expressed by sucrose is insignificant. When the amount of sucrose 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 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. It is preferable that the alum is contained in an amount of 2 to 5 parts by weight based on 100 parts by weight of the polypropylene resin. When the content of alum is less than 2 parts by weight, the effect by alum is insignificant, and when it is more than 5 parts by weight, it is uneconomical.

In one embodiment, the present invention may include Boehmite (AlO (OH) 2) to improve antibacterial properties. Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Of these, γ-boehmite excellent in crystallinity and excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property is preferably used. The γ-boehmite can be prepared by supercritical synthesis of only water (pure water) and aluminum (Al). The boehmite is preferably contained in an amount of 3 to 8 parts by weight based on 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 an antimicrobial effect to be achieved. If the content is more than 8 parts by weight, there is a fear that mixing property with other components is impaired.

Hereinafter, the structure and effects of 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]

Was prepared in the same manner as in Example 1, except for talc, and this was used as a comparative example.

[Experimental Example 1: Evaluation of impact resistance]

A specimen (20 cm * 30 cm, thickness 20 mm) was prepared using the plastic compositions of the examples and comparative examples. A weight of 3 kg was dropped at a height of 2 m and the degree of breakage of each specimen was measured. .

[Table 1]

As can be seen from the above Table 1, it was found that the embodiments including talc are superior in impact resistance to the comparative examples which do 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.

[Table 2]

As can be seen from the above Table 2, in the Examples, yellowing portions were hardly observed unlike the Comparative Examples. As a result, it was found that the heat resistance of the example was very excellent as compared with the comparative example.

[Experimental Example 3: Evaluation of antimicrobial activity]

The antibacterial activity test (JIS Z 2801) was carried out for Example 1, Example 3 and Comparative Example. 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.

[Table 3]

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 coupling between the filtering member 240 and the cone cave 230 or between the filtering member 240 and the mantle 225 may be performed in the same manner as in the case of the cone crusher 1 according to the present invention, Etc.) can be attached by the adhesive composition according to the present invention.

The adhesive composition according to one embodiment of the present invention is an adhesive composition comprising a base and a curing agent, wherein the base is composed of 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 1 to 20 parts by weight of a thixotropic agent, and the curing agent includes an isocyanate compound. The present invention relates to a water-soluble two-component adhesive composition comprising a subject and a curing agent, which can be applied and cured to produce an adhesive sheet or an adhesive, and is excellent in physical properties such as adhesiveness and heat resistance, Inorganic board such as wood board or magnesium board, and PVC sheet.

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 the 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 present invention has solved the problems such as environmental problems by excluding the epoxy resin.

Polyvinyl alcohol (PVA) plays a role in 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 or the like, and when it exceeds 30 parts by weight, the relative content of ethylene vinyl acetate is decreased, so that the cohesive force of the adhesive sheet or the adhesive may be weakened. In addition, when the present invention is used in an ondol floor or the like, antimony oxide and zirconium oxide may be used together with polyvinyl alcohol in order to supplement the functionality of polyvinyl alcohol. Antimony oxide and zirconium oxide may enhance the heat resistance of the adhesive sheet or adhesive to be produced, and they 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. Below this range, the effect of improving the heat resistance is insignificant, and when it exceeds the above range, it is not economical.

Water is used as the solvent of the subject. Unlike conventional adhesive sheets or adhesives, the present invention has the effect of solving environmental pollution problems because volatile organic solvents are not used. The 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. If the amount of water is less than 10 parts by weight, the ethylene vinyl acetate resin or the like can not be effectively dissolved, and if it exceeds 30 parts by weight, the water may become too thin to lower the strength of the adhesive sheet or the adhesive.

Calcium carbonate controls the viscosity of the adhesive composition and reduces shrinkage during 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, and the hardness of the adhesive sheet or adhesive may become poor. When the amount exceeds 30 parts by weight, the viscosity may become too tight and productivity may be deteriorated. In addition, the present invention may use various materials such as wormwoods and clays to replace calcium carbonate. For example, dolomite and / or talc may be used. At this time, it is preferable to mix dolomite and talc in a weight ratio of 1: 1 in order to improve mechanical properties. It is also preferable that the powder has a particle size of 150 to 200 mesh. When the powder is used to have a particle size of 150 to 200 mesh, it is mixed with other components such as ethylene vinyl acetate resin Can be improved.

The surfactant is used to reduce the surface tension when mixing the adhesive composition and to improve the application 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 of 8 to 14 carbon atoms.

The thixotropic agent is to prevent 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 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 water in an appropriate amount to produce plasticity when kneaded, rigidity when dried, and sintered when baked at 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. If the thixotropic imparting agent is less than 1 part by weight, the flowability can not be controlled sufficiently, and if the thixotropic imparting agent is more than 20 parts by weight, the flowability is 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 sodium silicate is less than 3 parts by weight, the degree of improvement of the adhesion performance is insignificant. When the amount is more than 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 properties of a hexagonal crystal structure in which shear is likely to occur, 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 improved effectively, and when it exceeds 5 parts by weight, the adhesion strength may be deteriorated. At this time, copper powder may be mixed with molybdenum disulfide.

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 amount of the flame retardant is less than 1 part by weight, the degree of improvement of the flame retardancy is insignificant. When the amount is more than 5 parts by weight, the flame retardant agent is not only economical but also has poor compatibility with other components. The flame retardant may be 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.

In addition, the subject may further include aluminum hydroxide to improve the antimicrobial properties of the adhesive sheet or adhesive to be produced. It is preferable to use boehmite (AlOH (OH)) as the aluminum hydroxide. Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Of these, γ-boehmite excellent in crystallinity and excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property is preferably used. The γ-boehmite can be prepared by supercritical synthesis of only water (pure water) and aluminum (Al). The aluminum hydroxide is preferably contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate. If the content of aluminum hydroxide is less than 5 parts by weight, it is difficult to exhibit the antimicrobial effect to be achieved. If the content is more than 10 parts by weight, the compatibility 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 on the subject to maintain proper viscosity and hardness, thereby shortening the curing time and prolonging the pot life when mixing the curing agent and the curing agent, . The isocyanate compound is preferably a compound containing two or more 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, trimethyl propane- Triisocyanate (TTI), diphenylmethane-4,4-diisocyanoate (MDI), hydrogenated MDI, or hexamethylene-diisocyanate (HDI) Is preferably used. The curing agent is preferably contained in an amount of 1 to 20 parts by weight based on 100 parts by weight of the subject.

The above-mentioned adhesive sheet or adhesive is prepared by preparing a water-soluble two-component adhesive composition by mixing a subject and a curing agent, and then applying and curing the adhesive composition to a work site. If necessary, And may further include a dispersant, an antifoaming agent, an antiseptic agent, a thickener, and the like within the range not impairing 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 have.

Hereinafter, the structure and effects of 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]

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 2]

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 in the same manner as in Example 1,

[Example 3]

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, and this was prepared in the same manner as in Example 3 Respectively.

[Comparative Example]

A comparative epoxy epoxy flooring adhesive (SEP-4300, manufactured by Samchang Chemical Co., Ltd.) was used as a comparative example.

[Experimental Example 1: Adhesion Test]

An adhesive strength test (KS F 4715) was conducted for Examples and Comparative Examples, and the results are summarized in Table 4 below.

[Table 4]

The adhesion strength of LH construction was 0.8 N / mm < 2 > or more, and both the examples and the comparative examples satisfied the acceptance criteria. However, it was found that the bonding strengths of the examples were superior to those of the comparative examples.

[Experimental Example 2: Evaluation of heat resistance]

The adhesive sheets or adhesives of Examples and Comparative Examples 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 below.

[Table 5]

As can be seen from the above Table 5, in the Examples, yellowing portions were hardly observed unlike the Comparative Examples. As a result, it was found that the heat resistance of the example was very excellent as compared with the comparative example.

[Experimental Example 3: Evaluation of antimicrobial activity]

The adhesive compositions of Example 3 and Comparative Examples 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.

[Table 6]

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, it was found that the antibacterial activity of Example 3 including gamma-boehmite was much better than that of Comparative Example.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

1: Cone crusher
100: upper frame
200: Lower frame
210: rotating body
220: Core
225: The mantle
230: Cone Cave
240: Filtering member

Claims (2)

A cylindrical upper frame having an opening for receiving aggregate supplied from an aggregate supplying means having an inclined surface formed on an upper surface thereof;
A lower frame having a cylindrical shape and provided with a crushing means for crushing the aggregate charged through the upper frame to a predetermined size or smaller and a discharging means for discharging the crushed aggregate to the outside; And
And a release spring installed at predetermined intervals along an outer circumferential surface of the lower frame to reduce a vertical load generated in an aggregate crushing process,
Wherein the crushing means comprises:
A core formed in an outer peripheral surface of the core, the core being formed in an upper portion of the rotation shaft, the core being formed in a vertical direction from the ground and having a rotation axis that eccentrically rotates about a central axis in the longitudinal direction, And a filtering member installed on a cone formed along the inner circumferential surface of the mantle and the lower frame,
Wherein the filtering member comprises:
A flexible metal material made of an elastic material or a shape memory alloy material, the upper surface of which is coupled along the circumference of the cone, the lower surface of which is coupled along the circumference of the mantle, Lt; / RTI >
The upper surface and the lower surface disposed at the specific position approach each other when the mantle and the cone come close to a predetermined closest distance in a specific position in the course of eccentric rotation of the rotary shaft, The mesh network is closed,
When the closest distance is formed at a position different from the specific position in the process of eccentrically rotating the rotary shaft, the upper surface and the lower surface are separated from each other, and as the side is expanded, And the aggregate crushed at the specific position is opened and discharged through the mesh net,
And filtering the metallic foreign matter contained in the aggregate in the crushing process of the aggregate by receiving the current,
Wherein the size of the mesh net is formed to have the same size as the closest distance so that the aggregate to be fed into another region having a distance greater than the closest distance in the aggregate crushing process is not passed without being crushed. delete

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