KR101908730B1 - Abrasive material tank - Google Patents

Abstract

The present invention relates to an abrasive material tank including a first space including an abrasive material inlet and storing an abrasive material supplied through the abrasive material inlet, a second space including an abrasive material outlet, communicating with the first space via a connection passage, and storing the abrasive material supplied from the first space, a compressor injecting compressed air into each of the first and second spaces through an air inflow pipe, a spray device communicating with the abrasive material outlet and spraying the abrasive material supplied from the second space, a first opening and closing portion opening and closing the abrasive material inlet, a second opening and closing portion opening and closing the connection passage, and a control unit detecting the amount of the abrasive material stored in the first and second spaces and controlling opening and closing of the first opening and closing portion and the second opening and closing portion based on the detected information. In a case where the amount of the abrasive material in the first space is less than a set reference, the control unit opens the first opening and closing portion. In a case where the amount of the abrasive material in the second space is less than a set reference, the control unit opens the second opening and closing portion. In this manner, the control unit performs control so that the abrasive material is supplied from the first space.

Description

Abrasive material tank

The present invention relates to an abrasive tank and relates to an abrasive tank capable of continuous operation.

A blasting operation for spraying a high-speed abrasive, which is made of small grains, is often used in order to remove rust, smoothen the surface of the object, or remove foreign matter adhering to the surface. Generally, for cutting or polishing, wear-resistant particles such as diamond particles, carbides, boron oxides, nitrides, hard metal pieces and ceramic pieces are used. Among them, diamond is known to be the hardest substance among the earth's materials. Due to these properties, diamond is widely used for cutting and grinding tools.

Artificial diamonds were invented in the 1950s, and segmented-type cutting tips in which such artificial diamond particles are irregularly arranged as abrasives have also been used since the same time. The artificial diamond (hereinafter referred to as " diamond ") is widely used in the field of stone processing for cutting and grinding stone such as granite and marble, and the construction industry for cutting and grinding concrete structures.

A segmented diamond tool consists of a segment (diamond tip) with a diamond particle distribution and a metal body with the segment fixed.

FIG. 1 is a perspective view of a conventional abrasive sprayer. FIG. 1 is a perspective view of a conventional abrasive sprayer. FIG. 1 is a perspective view of the abrasive sprayer of FIG. An air supply pipe 27 as a passage through which the compressed air moves, and a regulator (not shown) for regulating the pressure of the compressed air. The compressor 28 supplies compressed air to the nozzle device 18, (30).

One prior art technique for an abrasive tank (jetting device) is disclosed in Korean Patent Publication No. 10-2011-0048804.

However, in the case of the conventional abrasive tank (injection device), there is a problem that the work is interrupted every time the abrasive material is refilled into the tank in the middle due to the limit of the space size in which the abrasive can be stored.

In order to solve the above problems, it is an object of the present invention to provide an abrasive tank capable of storing a larger amount of abrasive than in the prior art.

Another object of the present invention is to provide an abrasive tank capable of continuously performing an operation by supplying an abrasive material into the abrasive tank even during the spraying of the abrasive material through the jetting device.

It is another object of the present invention to provide an abrasive tank for preventing the abrasive material inside the abrasive tank from flowing out to the outside.

In order to solve the above-described problems, an embodiment of the present invention,

A first space including an abrasive inlet and storing an abrasive supplied through the abrasive inlet;

A second space including an abrasive material outlet and communicating with the first space through a connection passage and storing an abrasive supplied from the first space; And

A compressor for introducing compressed air into the first space and the second space through an air inlet pipe, respectively; The abrasive material tank can store a large amount of abrasive material and can supply the abrasive material to the inside of the abrasive material tank while the abrasive material is sprayed through the spray device.

According to another aspect of the present invention, there is provided a polishing apparatus comprising: a first opening / closing unit for opening / closing an inlet of the abrasive material; A second opening / closing unit for opening / closing the connection passage; And a controller for sensing an amount of the abrasive stored in the first space and the second space and controlling opening and closing of the first opening and closing part and the second opening and closing part based on the sensed information, The control unit opens the first opening and closing unit when the amount of the abrasive charged into the first space is less than the preset reference, and opens the second opening and closing unit when the amount of the abrasive charged into the second space is less than the set standard, Wherein the control unit controls the supply of the abrasive material from the space, wherein the first stopper unit is configured to open and close the opening hole of the first space and to be rotatable to the inside of the first space; A second stopper which opens and closes an opening in the second space and is rotatably installed inside the second space; And a handle detachably attached to an outer surface of the first stopper portion and an outer surface of the second stopper portion and having a length longer than a diameter of the first stopper portion and the second stopper portion, When at least one of the first opening and closing part and the second opening and closing part is opened and the handle of the first stopper part is detected or at least one of the second opening and closing part and the abrasive material outlet is open, When the separation of the abrasive tank is detected, a warning sound is generated, and the abrasive material in the abrasive tank can be prevented from flowing out to the outside.

Another embodiment of the present invention is directed to a polishing pad comprising a first space including an abrasive inlet and containing an abrasive supplied through the abrasive inlet, an abrasive outlet, communicating with the first space via a connection passage, A compressor for introducing the compressed air into the first space and the second space through the air inlet pipe, an abrasive supplied from the second space in communication with the abrasive material outlet, A second opening and closing part for opening and closing the connecting passage, a second opening and closing part for opening and closing the connecting passage, a second space for detecting the amount of the abrasive stored in the first space and the second space, A control unit for controlling opening and closing of the first opening and closing unit and the second opening and closing unit by opening and closing an opening in the first space, A second stopper portion which is provided so as to be rotatable inside the second space by opening and closing an opening hole of the second space and a second stopper portion which is provided on the outer surface of the first stopper portion and on the outer surface of the second stopper portion, And a handle which is resiliently coupled and has a length longer than the diameter of the first stopper and the second stopper, wherein both ends of the stopper are inclined with respect to a plane inclined at a predetermined angle with respect to the longitudinal direction of the handle Wherein a length from the center point of the handle to the inclined surface is shorter than a radius of the first stopper portion and the second stopper portion, the abrasive tank comprising: There is an effect that the stopper portion or the second stopper portion can be opened and closed.

An embodiment of the present invention has an effect of storing a larger amount of abrasive than in the prior art.

Further, according to the embodiment of the present invention, the abrasive can be supplied to the inside of the abrasive tank even during the spraying of the abrasive through the spraying device, and therefore, there is an effect that continuous operation is possible.

Further, an embodiment of the present invention has an effect of preventing the abrasive material in the abrasive tank from flowing out to the outside.

1 is a perspective view of a conventional abrasive tank.
2 is a perspective view of an abrasive tank according to an embodiment of the present invention.
3 shows a cap and a handle according to an embodiment of the present invention.
Figure 4 illustrates another embodiment of the present invention with respect to the handle.
5 shows a control unit according to an embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the meantime, the structure of the apparatus described below is only for explaining the embodiment of the present invention, and is not intended to limit the scope of the present invention, and the same reference numerals used throughout the specification denote like elements.

The structure of the abrasive tank 1 according to an embodiment of the present invention will be described with reference to FIG.

An abrasive tank 1 according to an embodiment of the present invention includes a main body 100 including a first space 110 and a second space 120 in which supplied abrasive is stored, A compressor 300 for supplying compressed air to the main body 100 or the injecting device 200 and a control unit 400 for controlling the devices.

The main body 100 includes a first space 110 for receiving and storing an abrasive from the outside of the main body 100, a second space 120 for receiving and storing the abrasive stored in the first space 100, An abrasive inlet 130 corresponding to an inlet through which the abrasive is supplied to the first space 110, a connection passage 140 connecting the first space 110 and the second space 120, And an abrasive material outlet 150 corresponding to the outflow outlet.

The first space 110 includes a first air inlet 111 as an inlet through which the compressed air generated in the compressor 300 is introduced into the first space 110, And a first sensor (not shown) capable of measuring the amount of the abrasive stored in the first space 110. The first stopper 112 has a first stopper 112 for opening /

The first air inlet 111 may further include a check valve (not shown) to prevent the abrasive material or air in the first space 110 from flowing back to the compressor 300.

The first stopper portion 112 is an access passage of the first space 110 and opens the first stopper portion 112 when inspecting the interior of the first space 110. The handle 170 may be detachably connected or elastically coupled to the outer surface of the first stopper portion 112. A detailed description of the first stopper portion 112 and the handle 170 will be described later.

The first sensor may be any shape as long as it can measure the amount of abrasive material in the first space 110. For example, the amount of the abrasive can be measured by measuring the height of the abrasive stored in the first space 110 provided on the upper surface of the first space 110. Or the first sensor may be a weight sensor and may measure the amount of abrasive stored in the first space 110 by measuring the weight of the abrasive. The information measured by the first sensor is stored in the control unit 400.

The second space 120 includes a second air inlet 121 as an inlet through which the compressed air generated in the compressor flows into the second space 120, A second stop 122, and a second sensor (not shown) that can measure the amount of abrasive stored within the second space 120.

The second air inlet 121 may further include a check valve (not shown) to prevent the abrasive material or air in the second space 120 from flowing back to the compressor 300.

The second cap 122 opens and closes the second cap 122 when the inside of the second space 120 is checked. The handle 170 may be detachably connected or elastically coupled to the outer surface of the second stopper 122. A detailed description of the second stopper 122 and the handle 170 will be given later.

The second sensor has the same function and function as the first sensor.

The abrasive material inlet 130 includes a first opening and closing part 131. The first opening and closing part 131 controls the opening and closing of the abrasive inlet 130 and the opening and closing of which is controlled by the controller 400. [ For example, when the amount of the abrasive material in the first space 110 is equal to or greater than the predetermined amount, the first opening and closing part 131 is controlled to be closed. When the amount of the abrasive material in the first space 110 is less than the predetermined amount, The opening and closing part 131 can be controlled to be opened.

The connecting passage 140 includes a second opening and closing part 141 and the second opening and closing part 141 is responsible for opening and closing the connecting passage 140 and the opening and closing thereof is controlled by the control part 400. For example, when the amount of the abrasive material in the second space 120 is equal to or greater than the predetermined amount, the second opening and closing part 141 is controlled to be closed. When the amount of the abrasive material in the second space 120 is less than the predetermined amount, The opening and closing part 141 can be controlled to be opened.

The abrasive material outlet 150 may further include a device for regulating opening and closing. When the abrasive material is sprayed in the spray device 200, the device is opened and the abrasive material in the second space 120 moves to the spray device 200 through the abrasive material outlet 150.

The injection device 200 includes a nozzle device 220 for injecting an abrasive material, a hose 210 connecting the nozzle device 220 and the abrasive material outlet 150, a compressor 300 or an air compressor And a hose (230).

When the ejection button (not shown) provided on the nozzle device 220 is pressed, the abrasive material is introduced through the hose 210 and the compressed air is introduced through the air hose 230 at the same time. That is, the compressed air is mixed with the abrasive material and is injected through the nozzle device 220.

The compressed air generated in the compressor 300 flows into the first space 110 through the first air inlet pipe 310 communicated with the first air inlet 111. The compressed air is also introduced into the second space 120 through the second air inlet pipe 320 communicated with the second air inlet 121.

The compressed air introduced into the first space 110 causes the abrasive in the first space 110 to move into the second space 120 and the compressed air introduced into the second space 120 moves into the second space 120, So that the abrasive in the sprayer 200 can be easily moved.

When the compressed air flows into the first space 110, the first opening and closing part 131 is controlled to be closed and the second opening and closing part 141 is controlled to be opened. So that the abrasive material in the first space 110 can be prevented from being discharged to the outside through the abrasive material inlet 130 and can be moved only into the second space 120.

The second opening and closing part 141 is controlled to be closed when compressed air flows into the second space 120 and the opening and closing device provided in the abrasive material outlet 150 is controlled to be opened. So that the abrasive in the second space 120 can be prevented from moving into the first space 110 through the connection passage 140 and can be moved only to the injection device 200.

When the amount of the abrasive stored in the second space 120 is less than the set amount, the controller 400 opens the second opening and closing part 141 and controls the first opening and closing part 131 to be closed. That is, the first opening and closing part 131 and the second opening and closing part 141 are not opened at the same time. Therefore, since the abrasive can be continuously supplied from the first space 110, the injection device 200 can be continuously operated.

When the amount of abrasive stored in the first space 110 is less than the predetermined amount, the controller 400 can send a signal to the user through a separate alarm device (not shown). The user who received the signal can open the first opening / closing part 131 directly and then input the abrasive.

As another example, when the amount of abrasive stored in the first space 110 is less than the predetermined amount, the controller 400 may automatically open the first opening and closing part 131. [ However, when the first opening and closing part 131 is opened, the second closing part 141 is controlled so that the closed state is maintained even if the amount of the abrasive stored in the second space 120 is less than the set amount.

When the user senses that a predetermined amount of abrasive material is stored when the user loads the abrasive material into the first space 110 through the abrasive material inlet 130, the controller 400 instructs the user to charge the abrasive material in the first space 110 The alarm device can be notified that it is completed. Also, the controller 400 may control the first opening and closing part 131 to be automatically closed within a predetermined time after the alarm device is turned off.

The injector 200 can continue to operate while filling the abrasive in the first space 110. [ Since the second opening and closing part 141 is closed when the abrasive is filled in the first space 110, the abrasive stored in the second space 120 can continuously supply the abrasive to the sprayer 200. [

3 shows a first stop 112 provided in an opened hole of the first space 110 and a second stop 122 provided in an opened hole of the second space 120 .

The first stopper portion 112 and the second stopper portion 122 are hinged to be rotatable in an inner direction of the first space 110 and an inner direction of the second space 120, respectively. That is, when a force is applied to the outer surface of the first space 110 and the outer surface of the second space 120 in the inward direction of the spaces, the first stopper portion 112 and the second stopper portion 122 move in the first space 110 and into the interior of the second space 120, with the result that the open holes are opened. The inside of the first space 110 and the inside of the second space 120 can be checked or cleaned through the open holes.

A handle 170 is further provided on the outer surfaces of the first stopper portion 112 and the second stopper portion 122. The handle 170 may be detachably attached to the outer surface or may be resiliently coupled to the outer surface.

The handle 170 is longer than the diameter of the first stopper portion 112 and the diameter of the second stopper portion 122. That is, the handle 170 is longer than the maximum diameter of the open holes provided in the surfaces of the first space 110 and the second space 120. Accordingly, when the handle 170 is attached to the first stopper portion 112 and the second stopper portion 122, the handle 170 can be opened or closed along the periphery of the open hole, ). As a result, the first stopper portion 112 and the second stopper portion 122 are prevented from rotating into the first space 110 and the second space 120, respectively, through the attachment of the handle 170.

On the other hand, only one of the knobs 170 is provided as shown in the upper part of FIG.

The handle 170 needs to be rotated in contact with the tool for opening and closing the stopper portion, and in this process, the handle may be damaged.

A plastic composition is formed on the surface of the handle 170 connected to the first stopper portion 112.

The plastic composition includes polypropylene resin, high density polyethylene resin (HDPE), talc and germanium powder. INDUSTRIAL APPLICABILITY The present invention can improve mechanical properties such as heat resistance, durability and the like, can improve the twisting phenomenon, and can radiate the far-infrared rays, thereby minimizing the harmfulness to the metabolism promotion and the workers handling the present invention.

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 enhancing the tensile force in the production of the detailed composition of the present invention and the present invention, and various 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.

The plastic composition preferably contains 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 detailed composition of the present invention and the present invention is manufactured 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 More preferable. 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, .

On the other hand, the plastic composition may further contain various additives in order to improve mechanical properties, mixing properties, moldability, antibacterial properties and the like.

In one embodiment, the plastic composition may further comprise a garlic extract. The garlic extract is a natural adhesive component and functions as a binder for improving the mixing property with other constituents such as a polypropylene resin and a high-density polyethylene resin. The garlic extract is peeled and crushed, and 2 to 3 parts by weight of water is added per 1 part by weight of garlic. After heating at 80 to 100 캜 for 5 hours or more, the liquid component is extracted and filtered, The liquid component can be prepared by concentrating at 55 to 60 占 폚. The garlic extract is preferably contained in an amount of 10 to 20 parts by weight based on 100 parts by weight of the polypropylene resin. When the content of the garlic extract is less than 10 parts by weight, the polypropylene resin and talc can not be properly entangled so that the surface of the composition of the present invention and the composition of the present invention may not be uniformly formed. When the content is more than 20 parts by weight , There is a possibility that the dispersibility and the mixing property of each component may be rather lowered.

At this time, sucrose (C ₁₂ H ₂₂ O ₁₁ ) powder may be mixed and used to supplement the function of the garlic extract. Sucrose improves the mixing property of the entire composition to enable extrusion in the form of a thin film during the stretching process for producing a plastic composition and makes it possible to catch molecules which cause viscosity problems during mixing with a polypropylene resin or the like, It can also contribute to problem solving. The sucrose is preferably a powder having a particle size of from 1 to 120 탆 in an amount of 95 wt% or more, which is filtered through a 120-mesh net, and is preferably contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the polypropylene resin. When the content of sucrose is less than 1 part by weight, the effect expressed by sucrose is insignificant. When the amount of the sucrose is more than 5 parts by weight, the viscosity of the plastic composition is excessively increased, and it is difficult to form a uniform sheet.

In one embodiment, the plastic composition may further comprise a clay powder. Kaolin is white clay based on kaolinite and halloysite, and has excellent resistance to abrasion and thermal shock. The clay is preferably contained in an amount of 5 to 10 parts by weight based on 100 parts by weight of the polypropylene. If the amount of the clay is less than 5 parts by weight, there is a problem that the resistance to the external environment is weak. If the amount is more than 10 parts by weight, a synergistic effect of mechanical properties such as a decrease in compressive strength may not be exhibited.

Plastic composition may further include a titanium dioxide (TiO _2). The titanium dioxide can serve as a filler capable of improving the heat resistance of the plastic composition. The titanium dioxide is preferably contained in an amount of 5 to 15 parts by weight based on 100 parts by weight of the polypropylene resin. If the amount of titanium dioxide is less than 5 parts by weight, the abrasion resistance of the present invention and the detailed constitution of the present invention formed by the plastic composition can not be effectively improved. If the amount exceeds 15 parts by weight, workability may be deteriorated, May be poor.

The plastic composition may further comprise aluminum hydroxide. Aluminum hydroxide functions as an antimicrobial agent capable of improving the antimicrobial properties of the plastic composition. 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 may be contained in an amount of 2 to 7 parts by weight based on 100 parts by weight of the polypropylene resin. If the content of aluminum hydroxide is less than 2 parts by weight, it is difficult to exhibit the antimicrobial effect to be achieved. If the content is more than 7 parts by weight, the compatibility with other components may be impaired.

Further, the plastic composition may further contain a dispersant, an antifoaming 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 plastic composition.

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]

A plastic composition was prepared according to the composition shown in Table 1 below. Each material was made of commercially available material. In the case of garlic extract, it was prepared as described in the description of the invention, and the aluminum hydroxide used was gamma-boehmite.

[Table 1]

[Experimental Example 1]

The compositions of Examples 1 to 5 were heated and then stretched to prepare a plastic sheet having a thickness of 10 mm. The uniformity of the sheet surface was confirmed, and it is shown in Table 2 below. The uniformity was measured using a laser sensor (N ₂ laser, oscillation wavelength 337.1 nm, UDHO Laser., Japan), and 30 points were randomly selected to measure their surface roughness ㅁ 0.3 is less than 0.3, and more than 0.3 is not. Here, Examples 1 and 5 were subjected to a third elongation in the longitudinal direction, and Examples 2 to 4 were subjected to a third elongation in the longitudinal direction, the width direction and the longitudinal direction.

[Table 2]

As shown in Table 2, in the case of Examples 1 to 5, the uniformity of the produced sheet was all good. Among them, it was found that the uniformity of Example 3 was the most excellent.

[Experimental Example 2: Torsion Test]

The compositions of Examples 1 to 5 were heated and then stretched to prepare a plastic sheet having a thickness of 2 mm and then molded to produce 100 plastic articles. At this time, the finished product was evaluated for completeness, . Here, Examples 1 and 5 were subjected to a third elongation in the longitudinal direction, and Examples 2 to 4 were subjected to a third elongation in the longitudinal direction, the width direction and the longitudinal direction.

[Table 3]

As shown in Table 3, in Examples 2 to 4, more than 90% of normal products could be made. Particularly, in Example 3, the defective rate was very small.

[Experimental Example 3: Odor test]

An odor test was carried out for Examples 1 and 3 using ammonia gas. After the initial concentration measurement, the concentration after 5 minutes was measured and the deodorization rate was evaluated. The results are shown in Table 4 below.

[Table 4]

As shown in Table 4, it was found that Example 1 had little deodorizing effect, but Example 3 showed some deodorizing effect.

[Experimental Example 4: Antimicrobial Test]

The compositions of Examples 1 and 3 were tested for antibacterial activity (JIS Z 2801). Staphylococcus aureus ATCC 6538 (Staphylococcus aureus) and Escherichia coli ATCC 25922 (Escherichia coli) were used as the test strains, and the antibacterial activity (antibacterial activity value) was evaluated.

[Table 5]

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. In the case of Example 3, it was confirmed that the antibacterial effect by γ-boehmite was exhibited.

A sealing material is formed on the surface of the handle 170 connected to the second stopper 122.

The sealing material is preferably formed of a sealing composition comprising a silicone resin, molybdenum disulfide, copper powder and sodium silicate.

The silicone resin is a binder resin for forming a sealing material composition, and the molecular structure thereof is in the form of a siloxane bond (Si-O bond) in which silicon and oxygen alternate, and silicon is at least selected from the group consisting of methyl group, phenyl group, It may have one functional group. Silicone resins are commercially available or can be prepared by methods well known in the art, for example, by reacting metal silicon with methyl chloride at about 300 DEG C using a catalyst, dimethyldichlorosilane, methyltrichlorosilane or A mixture of these is obtained, and a silicone resin produced by hydrolysis thereof can be used.

Molybdenum disulfide (MoS ₂ ) is found in thin veins in minerals and is mined and used as a lubricant. Molybdenum disulfide (MoS ₂ ) 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 10 to 20 parts by weight based on 100 parts by weight of the silicone resin based on the solid content. When the amount of the molybdenum disulfide is less than 10 parts by weight, the abrasion resistance can not be improved effectively, and when it exceeds 20 parts by weight, the adhesion of the sealing composition may be deteriorated. When the adhesiveness of the sealing composition deteriorates, the sealing material is hardly fixed on the surface of the roller.

The copper powder is used as a lubricating component such as molybdenum disulfide, and is preferably used together with molybdenum disulfide. Copper powders can reduce the anti-wear and anti-friction properties of the seal material produced by forming a self-lubricanting and self-repairing coating on the friction surface. The copper powder is preferably an auxiliary component of the lubricating component and is contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the silicone resin based on the solid content. When the amount is less than 1 part by weight, the effect of improving the abrasion resistance by the copper powder can not be obtained. When the amount is more than 5 parts by weight, there is a concern that the mixing property of the sealing composition may be inhibited.

Sodium silicate is used to improve adhesion to roller surface. It does not cause pollution unlike existing adhesives and is environmentally friendly and has excellent adhesion. The sodium silicate is preferably contained in an amount of 20 to 30 parts by weight based on 100 parts by weight of the silicone resin based on the solid content. When the amount of sodium silicate is less than 20 parts by weight, adhesion performance may be deteriorated. When the amount is more than 30 parts by weight, there is a fear that abrasion resistance may be lowered.

The sealing composition may further include an additional auxiliary component for improving the function of the sealing material. That is, it may contain antimony oxide (Sb ₂ O ₃ ) to improve heat resistance, may include clay to improve durability, and may include silica airgel to improve heat insulation.

The antimony oxide is used for improving the heat resistance of the sealing material and lowering the thermal expansion coefficient, and is preferably contained in an amount of 5 to 10 parts by weight based on 100 parts by weight of the silicone resin based on the solid content. If the amount of the antimony oxide is less than 5 parts by weight, the coefficient of thermal expansion can not be sufficiently reduced, and if it exceeds 10 parts by weight, the mixing property of the sealing composition may be impaired.

Clay is an aggregate of fine hydrated silicate minerals. It is used to strengthen the durability of the seal material. It is a material that mixes with an appropriate amount of water to produce plasticity, shows rigidity when dried, and sintered at high temperature. Concretely, clay may use kaolinite and / or bentonite, and it is preferable to mix kaolinite and bentonite in a weight ratio of 1: 1 in order to obtain the best effect. The clay is preferably contained in an amount of 1 to 3 parts by weight based on 100 parts by weight of the silicone resin on a solid basis. When the amount is less than 1 part by weight, the durability enhancement effect by the clay can not be obtained. When the amount exceeds 3 parts by weight, the mixing property of the sealing material composition is impaired and the sealing material may not be effectively produced.

Silica aerogels have a high surface area (500 to 1,200 m ² / cm ³ ), many nanopores (88 to 99.8%), low density (~ 0.003 g / cm ³ ) and high thermal barrier properties (0.005 W / Gel method and the sealing material is used to improve the heat insulating property so that heat due to friction with the inner wall of the chamber 10 is not transferred to the plunger 20. [ The silica airgel is preferably contained in an amount of 5 to 15 parts by weight based on 100 parts by weight of the silicone resin based on the solid content. If the amount of the silica airgel is less than 5 parts by weight, a sufficient heat insulating effect can not be obtained. If the amount is more than 15 parts by weight, the durability of the sealing material may be deteriorated.

Hereinafter, the structure and effect of the present invention will be described in more detail with reference to specific experimental examples.

[Production Example 1]

100 parts by weight of silicone resin, 15 parts by weight of molybdenum disulfide, 3 parts by weight of copper powder and 25 parts by weight of sodium silicate were mixed to prepare a sealing composition.

[Production Example 2]

8 parts by weight of antimony oxide, 2 parts by weight of clay (mixture of sea salt and bentonite in a weight ratio of 1: 1) and 10 parts by weight of silica airgel were further added to prepare a sealing composition.

[Experimental Example 1: Abrasion resistance test]

The sealing compositions of Production Examples 1 and 2 were applied to the roller surface and dried to form a sealing material, and after the substrate transferring operation was performed for 24 hours, the appearance of the sealing material was evaluated. The results are shown in Table 1 below, and the criteria were O (almost no signs of wear),? (10% to 30% wear), and X (wear of 30% or more).

[Table 1]

As shown in Table 1, the sealing materials in Manufacturing Examples 1 and 2 were in a satisfactory state, but the sealing materials of Production Example 2 were judged to have superior abrasion resistance.

[Experimental Example 2: Heat resistance test]

A phosphate layer was formed with an amount of 3 g / m ² on the electroplated galvanized steel sheet having a plating amount of 25 / m 2 on one side using PALBOND 3050, Phosphoric Acid Phosphate Phosphate Treatment Agent of Parkerizing Co., And 2 were coated at a coating amount of 3 g / m ² to form a film, and then the film was held in an electric oven at 500 ° C. for 24 hours. The film was cut in an X- 3 mm or less, and X: peeling width exceeding 3 mm). The results are shown in Table 2 below.

[Table 2]

As shown in Table 2, the sealing materials in Manufacturing Examples 1 and 2 were in a satisfactory state, but it was judged that the heat resistance of the sealing material of Production Example 2 was more excellent.

The controller 400 detects whether the handle 170 provided in the first stopper portion 112 is detached or rotated while at least one of the first opening and closing portion 131 and the second opening and closing portion 141 is open. , It generates a warning sound through the alarm device.

When at least one of the second opening and closing part 141 and the abrasive material outlet 150 is opened and separation or rotation of the handle 170 provided on the second stopper 122 is detected, .

In addition, the controller 400 alerts the user through an alarm device, and can change the lock 170 to a rocked state to isolate the handle 170 from the source.

When the first stopper 112 or the second stopper 122 is opened when at least one of the first opening / closing part 131, the second opening / closing part 14 and the abrasive material outlet 150 is opened, And the pressure of the compressed air flowing into the second space 120 is large, the abrasive stored in the respective spaces can be discharged to the outside through the first stopper portion 112 or the second stopper portion 122. It is possible to secure the safety of the user and to prevent the damage of the abrasive tank by generating a warning sound through the alarm device or changing the lock state so that the handle is not separated.

Also, while the spraying device 200 is operating, the control unit 400 changes the lock 170 such that the detachment or rotation of the handle 170 provided in the second stopper portion 122 is shut off from the source.

Figure 4 illustrates another embodiment of the handle 170 of the present invention in which the handle 170, the first or second stop 112, 122 is viewed from the side.

4, the support 160 protrudes a predetermined distance along the peripheries of the open holes of the first space and the second space, and the handle 170 is in contact with the support 160. The knob 170 is connected to the first or second stopper portion 112 or 122 via the connecting shaft 172.

The handle 170 is composed of a connecting shaft 172 and a bar 171 which is longer than the opening hole by a predetermined distance. The length of the bar 171 is longer than the maximum diameter of the support 160 or the open hole. Accordingly, the bar 171 is caught by the support member 160, and as a result, the insertion into the first space or the second space is impossible. In addition, the first or second stopper portions 112 and 122 connected to the bar 171 are not rotatable into the first and second spaces.

Referring to the lower drawing of FIG. 4, it can be seen that the contact between the bar 171 and the support base 160 is released. The bar 171 is resiliently engaged with the first or second stopper portions 112 and 122 through the connecting shaft 172 and the elastic member 173. [ When the user pulls the bar 171 in the direction away from the first or second stopper portion 112 or 122, the bar 171 is not separated from the first or second stopper portion 112 or 122, (173).

When the contact between the bar 171 and the support base 160 is released, the force (rod) to which both ends of the bar 171 are applied disappears. At this time, both ends of the bar 171 can rotate with respect to the central portion of the bar 171. Concretely, the bar 171 is composed of a central portion 171a and a rotating portion 171b provided at both ends of the central portion 171a. The rotating portion 171b can rotate about the center portion 171a with reference to a plane inclined at a predetermined angle with respect to the longitudinal direction of the bar 171. [

That is, the surface where the center portion 171a and the rotating portion 171b are in contact with each other is inclined at a predetermined angle with respect to the longitudinal direction of the bar 171. The inclined surface may be formed at about 45 degrees with respect to the longitudinal direction of the bar 171, but is not limited thereto.

Specifically, the length from the center point of the bar 171 to the inclined surface is shorter than the radius of the first or second stopper portion 112, 122.

Accordingly, when the rotary part 171b at both ends is rotated as shown in the lower view of FIG. 4, the bar 171 is no longer moved to the first space or the second space Inserted and rotated. When a force is applied to the first or second stopper portion 112 or 122 in the situation shown in the lower view of FIG. 4, the first or second stopper portion 112 or 122 is rotated into the first space or the second space .

4 shows a state in which the handle 170 controls the rotation of the first or second stopper portions 112 and 122 only by the deformation of the bar 171 without being separated from the first or second stopper portions 112 and 122 Gt; embodiment. ≪ / RTI >

5 shows a control unit according to an embodiment. The control unit is a combination of software and hardware that collectively controls the abrasive tank. The control unit may be a control box and also an explosion proof equipment.

An object to be explosion-proof is placed inside the control unit 400. The explosion-proof object may be placed in a state in which it is exposed to the inner space of the control unit or may be stored independently in the control unit. When the object to be explosion-proof is embedded in the control unit independently, it is safely stored from an ignition source such as a fire or a flammable gas, and the inflow of the ignition material into the control unit is completely blocked, so that the damage caused by the explosion can be prevented in advance and can be safely stored.

The control unit includes a solenoid valve for introducing compressed gas into the control unit; A relief valve for discharging the fluid inside the control unit; An explosion-proof temperature sensor (102) disposed on the inner wall of the control unit; A cooler disposed on an inner wall of the control unit; A heater disposed on an inner wall of the control unit; The controller may further include: a heater driver for driving the heater when the temperature received from the explosion-proof temperature sensor is -10 degrees or less; And a cooler driving unit for driving the cooler when the temperature received from the explosion-proof temperature sensor is 200 degrees or more. The control unit may also control to open or close the relief valve and the solenoid valve.

The solenoid valve 50 introduces the compressed gas into the control unit 400. A compressed gas is supplied into the control unit 400 through the solenoid valve 50. That is, when the solenoid valve 50 is opened, the compressed gas flows into the controller 400, and when the solenoid valve 50 is closed, the compressed gas can not flow into the controller 400.

The relief valve 60 allows the fluid inside the control unit 400 to flow out. The relief valve 60 discharges the fluid inside the control unit 400 to the outside of the control unit 400 or blocks the discharge of the fluid. That is, when the relief valve 60 is opened, the fluid inside the control unit 400 is discharged to the outside of the control unit 400. In addition, when the relief valve 60 is closed, the discharge of the fluid inside the control unit 400 is blocked.

The explosion-proof type temperature sensor 102 is disposed on the inner wall of the control unit 400. In detail, the explosion-proof type temperature sensor 102 is disposed on the inner surface, the left surface, the right surface, and the bottom surface of the control unit 400.

The cooler 30 is disposed on the inner wall of the control unit 400. The cooler 30 is an air cooler (Vortex cooler) and disposed on the upper surface of the control unit 400.

The heater 40 is disposed on the inner wall of the control unit 400. The heater (40) can output heat through a juxtaposition generated by flowing a current to a resistance wire or the like. The heater 40 is disposed on the lower surface of the control unit 400.

The heater driving unit and the cooler driving unit are included in the control unit and mean one unit or block performed by the microprocessor included in the control unit.

The heater driving unit drives the heater 40 when the temperature received from the explosion-proof temperature sensor is less than -20 degrees. The explosion-proof type warmth sensor transmits the measured temperature in real time to the controller 400. The heater driver drives the heater 40 when the internal temperature of the controller 400 is less than -20 degrees. At least a part of the configuration of the controller 400 may malfunction if the internal temperature of the controller 400 is less than -20 degrees.

More specifically, the heater driving unit drives the heater 40 when the temperature received from at least one of the explosion-proof temperature sensors disposed on the upper, left, right, and lower surfaces of the controller 400 is -20 degrees or less .

The cooler driving unit 1270 drives the cooler 30 when the temperature received from the explosion-proof temperature sensor is 40 degrees or more. If the internal temperature of the control unit 400 is 40 degrees or more, at least a part of the configuration of the control unit 400 may malfunction.

More specifically, when the temperature received from at least one of the explosion-proof temperature sensors disposed in the upper, left, right, and lower surfaces of the controller 400 is 40 degrees or more, the cooler driving unit 1270 controls the cooler 30 .

Due to the cooler 30 and the heater 40, the internal temperature of the controller 400 can be maintained in a range of -20 degrees to 40 degrees.

The relief valve (60) is formed on an upper portion or a lower portion of one side of the top surface, and the solenoid valve (50) is formed on the upper surface of the relief valve (60) The relief valve 60 is formed at the lower part of the surface facing the one surface, and when the relief valve 60 is formed at the lower surface of the one surface, the relief valve 60 is formed on the surface facing the one surface.

That is, when the solenoid valve 50 is disposed on the upper right side of the inside of the control unit 400, the relief valve 60 is disposed below the left side of the inside of the control unit 400. The compressed gas is introduced through the solenoid valve 50 and the fluid inside the control unit 400 is discharged through the relief valve 60. When the flammable gas heavier than the compressed gas flows into the control unit 400, the flammable gas flows into the control unit 400 through the solenoid valve 50 on the upper right side of the control unit 400, And can be discharged through the lower relief valve 60.

When the solenoid valve 50 is disposed below the right side of the inner side of the control unit 400, the relief valve 60 is disposed on the upper left side of the inner side of the control unit 400. The compressed gas is introduced through the solenoid valve 50 and the fluid inside the control unit 400 is discharged through the relief valve 60. When the flammable gas, which is lighter than the compressed gas, flows into the control unit 400, the flammable gas flows into the control unit 400 through the solenoid valve 50 in the lower right side of the control unit 400, And can be discharged through the upper relief valve 60.

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: abrasive tank
100: main body 110: first space 111: first air inlet
112: first stopper 120: second space 121: second air inlet
122: second stopper 130: abrasive inlet 131: first opening / closing part
140: connecting passage 141: second opening and closing part 150: abrasive material outlet
160: support member 170: handle 171: bar
172: connection shaft 173: elastic member 200: injection device
210: Hose 220: Nozzle device 230: Air hose
300: compressor 310: first air inlet pipe 320: second air inlet pipe
400:

Claims (2)

A first space including an abrasive inlet and storing an abrasive supplied through the abrasive inlet;
A second space including an abrasive material outlet and communicating with the first space through a connection passage and storing an abrasive supplied from the first space; And
A compressor for introducing compressed air into the first space and the second space through an air inlet pipe, respectively; , ≪ / RTI &
A first opening and closing unit for opening and closing the abrasive inlet;
A second opening / closing unit for opening / closing the connection passage; And
And a controller for sensing an amount of the abrasive stored in the first space and the second space and controlling opening and closing of the first opening and closing part and the second opening and closing part based on the sensed information,
Wherein the control unit opens the first opening and closing unit when the amount of the abrasive charged into the first space is less than a predetermined standard and the control unit opens the second opening and closing unit when the amount of the abrasive charged into the second space is less than a predetermined standard, So that the abrasive is supplied from the first space,
A first stopper which opens and closes an opening hole of the first space and is rotatable inside the first space;
A second stopper which opens and closes an opening in the second space and is rotatably installed inside the second space; And
And a handle detachably provided on an outer surface of the first stopper portion and an outer surface of the second stopper portion and having a length longer than a diameter of the first stopper portion and the second stopper portion,
Wherein the control unit detects the detachment of the handle of the first stopper unit when at least one of the first opening and closing unit and the second opening and closing unit is open or at least one of the second opening and closing unit and the abrasive material outlet is open, And a warning sound is generated when separation of the handle of the second cap portion is sensed
Abrasive tank. delete

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