JP2019000783A - Contaminant collector and centrifugal separator - Google Patents

Abstract

To provide a contaminant collector which enables reduction of labor and time for contaminant removal work compared to a conventional contaminant collector and is suitable for being used as a disposable item, and to provide a centrifugal separator using the contaminant collector.SOLUTION: A contaminant collector 1 is disposed at the inner side of a rotary container 21 in a centrifugal separator 2 and is used to collect contaminants in oil supplied to the rotary container 21 through centrifugal separation. The contaminant collector 1 has a collector main body 10 including a cylindrical part 101 and a bottom part 102 which closes one opening end of the cylindrical part 101. The collector main body 10 is formed by paper, and the cylindrical part 101 and the bottom part 102 are integrated. The collector main body 10 may be formed in a compressed structure. Further, the collector main body 10 may have a coating layer 11 formed by an oil-resistant resin on its surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a contaminant collection body and a centrifuge.

  Conventionally, oil such as forging oil, hydraulic oil, polishing oil, pressing oil, grinding oil, etc., is supplied to the rotating container of the centrifuge, and light oil and heavy impurities are separated by centrifugal force. By separating, used oil is purified. Contaminants adhering to the rotating container are usually removed by scraping with a spatula or the like.

  In order to simplify the removal work of foreign substances, for example, in Patent Document 1, a paper cylinder having fine irregularities of vertical stripes is mounted on the inner side of a rotating container of an overflow centrifuge. A technique for collecting contaminants in oil in a cylindrical body is disclosed.

Japanese Patent Publication No. 5-74416

  However, in the prior art, since a paper cylinder is used, not a few impurities adhere to the bottom wall of the rotating container. Therefore, in the prior art, in spite of collecting the foreign matter with the paper cylinder, the foreign matter adhering to the bottom wall of the rotating container has to be scraped off with a spatula or the like. At this time, if there is any scraping residue left on the bottom wall of the rotating container, there is a risk that the contaminant will be mixed again into the purified oil. For this reason, the operator must carefully perform the operation of removing the foreign substances adhering to the bottom wall of the rotating container, and there is a limit to reducing the time and effort required for the operation of removing the foreign substances.

  Further, when a bag-like rubber container is mounted inside the rotating container, the rubber container adheres to the rotating container due to the heat of oil and a large centrifugal force. Therefore, it is difficult to remove the rubber container at the time of removing impurities. Therefore, with a rubber container, it is difficult to reduce the time and effort required to remove impurities. In addition, a rubber container that collects impurities is poor in discardability and cannot be said to be suitable for disposable use.

  The present invention has been made in view of the above-mentioned background, and compared with the conventional case, it is possible to reduce the labor and time required for the removal work of foreign matters, and the foreign matter collecting body suitable for disposable use, and also using the same. It is intended to provide a centrifuge.

One aspect of the present invention is a contaminant collection body that is disposed inside a rotating container in a centrifuge and collects impurities in oil supplied to the rotating container by centrifugation,
It has a collector body with a cylindrical part and a bottom part that closes one open end of the cylindrical part,
The collector main body is formed of paper, and is in a contaminant collector in which the cylindrical portion and the bottom portion are integrated.

  Another aspect of the present invention is a centrifuge having the contaminant collection body.

  If a separate cylindrical part and bottom part are used and the collector is configured by simply fitting the bottom part into the cylindrical part, the bottom part may be lifted by the centrifugal force and the bottom part may come off. Even if the bottom portion does not come off, the oil leaks significantly from the gap due to the fitting due to strong centrifugal force. On the other hand, the contaminant collection body has a collection body main body provided with a cylindrical portion and a bottom portion that closes one opening end of the cylindrical portion, and the collection body main body includes a tubular portion and a bottom portion. Are integrated. Therefore, in the said contaminant collection body, a bottom part does not slip out and oil does not leak from the clearance gap between a bottom part and a cylindrical part. Therefore, according to the said contaminant collection body, it can suppress that oil adheres to both the inner peripheral wall and bottom wall of a rotary container, and the effort and time concerning the removal operation | work of a contaminant are reduced compared with the past. be able to. Further, the collector body is formed of paper. Therefore, the contaminant collection body to which the contaminants are attached can be removed from the rotating container and discarded as it is. Therefore, the contaminant collection body is suitable for disposable use.

  Since the centrifuge uses the contaminant collection body, it is possible to reduce the labor and time required to remove the contaminant.

It is typical explanatory drawing of the crusher of Example 1, and the centrifuge of Example 1 which has this. FIG. 3 is a front view of a contaminant collection body according to the first embodiment. FIG. 3 is a plan view of a contaminant collection body according to the first embodiment. FIG. 4 is a cross-sectional view taken along the line IV-IV of the contaminant collection body of Example 1. It is sectional drawing of the foreign material collection body of Example 2 corresponding to FIG. It is sectional drawing of the foreign material collection body of Example 3 corresponding to FIG. It is sectional drawing of the contaminant collection body of Example 4 corresponding to FIG. It is sectional drawing of the contaminant collection body of Example 6 corresponding to FIG.

  The said contaminant collection body is arrange | positioned inside the rotation container in a centrifuge, and is for collecting the contamination in the oil supplied to a rotation container by centrifugation. The oil containing impurities may be either a water-insoluble oil or a water-soluble oil. Examples of the oil include forging processing oil, hydraulic working oil, polishing processing oil, pressing processing oil, grinding processing oil, and lubricating oil.

  The foreign matter collector has a collector body including a cylindrical portion and a bottom portion that closes one open end of the cylindrical portion. In the collector body, the cylindrical portion and the bottom portion are integrated. That is, the collector body is integrally connected so that the bottom part does not come off from the cylindrical part. Specifically, the cylindrical portion and the bottom portion can be configured to be integrated seamlessly. According to this configuration, since there is no seam between the cylindrical part and the bottom part, it is possible to reliably suppress oil leakage from the seam. In addition, the cylindrical portion and the bottom portion may be integrated with a seam. In this case, it is preferable that the seam is sealed with an adhesive, a sealant, or the like in order to reliably suppress oil leakage from the seam.

  The collector body is made of paper. Examples of paper include waste paper pulp, wood pulp, and cardboard. Specifically, the collector body can be constituted by a pulp mold molded body. According to this configuration, a seamless collector body that has a bottomed cylindrical shape relatively easily by integrally molding the cylindrical portion and the bottom portion with a pulp raw material including waste paper pulp using a pulp mold molding method. Can be formed. Moreover, according to this structure, the contaminant collection body excellent in the discardability after collection of contaminants is obtained.

  The said contaminant collection body WHEREIN: The collection body main body can be set as the structure compressed. According to this configuration, since the denseness of the papers constituting the collector body is improved, the shape stability of the contaminant collector can be improved. Moreover, the surface unevenness | corrugation of a collector main body is reduced and the surface is planarized. Therefore, according to this structure, the adhesiveness of the said contaminant collection body with respect to the inner peripheral wall and bottom wall of a rotation container can be improved. Therefore, according to this configuration, it is possible to obtain a contaminant collection body that is difficult to rotate when the rotating container rotates. Moreover, according to this structure, when removing the contaminant collection body from the rotating container and disposing it, a contaminant collection body that can be easily removed without sticking to the rotating container is obtained. In addition, the collector main body can be set as the structure compressed in the direction (direction perpendicular | vertical to the surface of a collector main body) specifically, the thickness direction of a collector main body. Examples of the method for compressing the collector body include press molding.

  The said contaminant collection body can be set as the structure which has a coating layer comprised from oil-resistant resin on the surface of a collection body main body. Since the collector body is made of paper, the oil will soak in as it is used, and the oil that has passed through the collector body will adhere to the rotating container, and the appearance of the rotating container will be impaired when the contaminant collector is removed. Can be considered. According to the said structure, the seepage of the oil to the outer surface of a contaminant collection body is suppressed by the coating layer. Therefore, according to the said structure, it is excellent in the external appearance in the container of the rotation container at the time of removing the said contaminant collection body. Moreover, according to the said structure, since a collector main body is reinforced with a coating layer, it is advantageous also to the intensity | strength improvement of a contaminant collector.

  At this time, the coating layer may be formed on the outer surface of the collector body, may be formed on the inner surface of the collector body, or formed on both the inner surface and the outer surface of the collector body. May be. In particular, according to the configuration in which the coating layer is formed only on the outer surface of the collector body, the oil oozes out to the outer surface of the contaminant collector is suppressed by the coating layer. In addition to this, there is no possibility that a product or the like generated by the reaction between the coating layer and the additive in the oil component inside the contaminant collection body is mixed into the purified oil. Therefore, this configuration is advantageous for improving the quality of the purified oil.

  As the oil resistant resin, for example, an unsaturated polyester resin or the like can be mentioned as a preferable one. Unsaturated polyester resin can exhibit high oil resistance by curing with a curing agent, and can form a hard coating layer. Therefore, according to this structure, the effect by the coating layer mentioned above can fully be exhibited. In addition, the oil-resistant resin constituting the coating layer may be partially or entirely impregnated inside the surface of the collector body, or may not be impregnated. According to the former configuration, it is possible to obtain a contaminant collection body that is advantageous for improving the adhesion between the collection body main body and the coating layer.

  In the said contaminant collection body, it can be set as the structure by which resin is mixed with the papers which comprise a collection body main body. According to this configuration, since the minute gaps in the paper are blocked by the resin, the penetration of oil into the collector body is suppressed, which is advantageous for suppressing the seepage of oil to the outer surface of the contaminant collection body. is there. Further, according to this configuration, the strength of the paper is improved by the resin, which is advantageous for improving the strength of the collector body. In particular, when the collector body is composed of paper mixed with a resin and has the above-described coating layer on the surface of the collector body, the synergistic effect of the two causes the outside of the contaminant collector. The effect of suppressing oil seepage from the surface and the reinforcing effect of the collector body can be ensured. In addition to the above, when the collector main body is compressed, the synergistic effect can be further ensured.

  Any resin can be used as long as it does not impair the moldability of the collector body. Moreover, when comprising a collector main body from a pulp mold molding, it is preferable that the said resin has hydrophilicity from viewpoints, such as the moldability by pulp mold molding. In addition, the resin is preferably a thermoplastic resin from the viewpoint that it is easily melted by applying heat and then re-solidified to easily close a gap between papers. Specific examples of the resin include polyolefin resins such as polyethylene and polypropylene. These can be used alone or in combination of two or more. Further, the content of the resin in the collector main body is preferably 5% by mass or more, more preferably 10% by mass or more, and further preferably 15% by mass or more, from the viewpoint of obtaining an effect by addition of the resin. be able to. In addition, the content of the resin in the collector body is preferably 50% by mass or less, more preferably 40% by mass or less, from the viewpoints of blockage of minute gaps in paper, cost, moldability, and the like. Preferably, it can be 30 mass% or less.

  In the above-described contaminant collection body, the thickness of the collection body main body can be preferably 1 mm or more and 5 mm or less, more preferably 1.5 mm or more and 3 mm or less. When the thickness of the collector main body is 1 mm or more, the contaminant collector is less likely to be damaged when the contaminant collector is attached to the rotary container or when the contaminant collector is detached from the rotary container. Moreover, it becomes easy to ensure the shape maintenance property of the said contaminant collection body. On the other hand, when the thickness of the collector body is 5 mm or less, it is advantageous for securing moldability by pulp mold molding, press moldability, and the like.

  The said contaminant collection body WHEREIN: A collection body main body can be set as the structure by which a packing member is provided along an opening edge. In the centrifuge, a rotating container having a lid is generally used. Therefore, according to the said structure, it can suppress that oil leaks from the clearance gap between the opening edge of a collector main body, and the cover part of a rotation container by a packing member. The packing member can be made of rubber or the like. Specifically, the packing member may have a fitting groove into which the opening edge of the collector body is fitted. According to this configuration, since the packing member can be attached and detached, a contaminant collecting body that can reuse the packing member is obtained.

  In addition, each structure mentioned above can be arbitrarily combined as needed, in order to acquire each effect etc. which were mentioned above.

  Hereinafter, the foreign substance collection body and centrifuge of an Example are demonstrated using drawing. In addition, about the same member, it demonstrates using the same code | symbol.

Example 1
The contaminant collection body and centrifuge of Example 1 are demonstrated using FIGS. 1-4. As shown in FIG. 1, the centrifuge 2 of this example has the contaminant collection body 1 of this example.

  In this example, specifically, the centrifuge 2 rotates the rotating container 21 composed of an aluminum pot or the like, the contaminant collection body 1 disposed inside the rotating container 21, and the rotating container 21. And a driving belt 24 that transmits the rotational force of the motor 22 to the rotating shaft 23 of the rotating container 21, and an outer case 25 that houses the rotating container 21. The exterior case 25 has a partition wall 251 inside, and the rotating container 21 is disposed on the inner peripheral side of the partition wall 251. Moreover, the case top plate 250 of the exterior case 25 is configured to be openable and closable. The rotating container 21 has an annularly formed lid portion 211 attached to the upper portion thereof, and the foreign matter collector 1 can be attached and detached by removing the lid portion 211. The oil to be purified stored in the oil tank 3 such as processing equipment is sent to the upper part of the rotary container 21 by the pump 261 or the like. The opening end of the pipe 271 for supplying the oil to be purified is disposed above the substantially central portion of the lid portion 211, and the oil to be purified passes through a hole portion 212 formed in the substantially central portion of the lid portion 211. It is supplied into the contaminant collection body 1 through. On the other hand, the oil purified by adhering contaminants to the inner surface of the contaminant collector 1 by centrifugal force is separated from the upper portion of the rotary container 21 via the piping 272 for sucking the purified oil, and the exterior case 251. 25 is supplied to a space 252 between the oil tank 25 and the oil tank 3 through an oil discharge port 253 formed in the outer case 25. The open end of the pipe 272 on the oil suction side is arranged facing the inner peripheral wall 213 side of the rotary container 21. The rotating container 21 has a central portion of the bottom wall 214 protruding toward the inside of the container. The rotating shaft 23 is connected to the protruding portion 215.

  The contaminant collection body 1 of this example is disposed inside the rotary container 21 in the centrifuge 2 and is used for collecting the contaminants in the oil supplied to the rotary container 21 by centrifugation. The foreign matter collector 1 has a bottomed cylindrical collector body 10 that includes a cylindrical portion 101 and a bottom portion 102 that closes one open end of the cylindrical portion 101. The collector body 10 is made of paper, and the cylindrical portion 101 and the bottom portion 102 are integrated.

  In this example, an example is shown in which a protruding portion 215 is formed at the center portion of the bottom wall 214 of the rotary container 21 in the centrifuge 2. Therefore, a cover portion 103 for covering the protruding portion 215 protruding from the bottom wall 214 of the rotating container 21 is formed on the bottom portion 102 of the collector body 10 in the contaminant collecting body 1 of the present example. The cylindrical portion 101 of the collector body 10 can be brought into close contact with the inner peripheral wall 213 of the rotating container 21 with a slight clearance. Further, the bottom 102 of the collector body 10 can be brought into close contact with the bottom wall 214 of the rotating container 21 with a slight clearance.

  In this example, the collector main body 10 is specifically formed from waste paper pulp using a pulp molding method. The collector body 10 is in a compressed state. In this example, the collector body 10 is formed by compressing a dried body obtained by pulp molding a used paper pulp raw material, and then pressing the dried body with a mold adjusted to a temperature of 150 ° C. It is formed by doing. Specifically, the thickness of the collector body 10 can be set to 2 mm, for example.

  The contaminant collection body 1 of the present example includes a collection body main body 10 including a tubular portion 101 and a bottom portion 102 that closes one opening end of the tubular portion 101, and the collection body main body 10 has a tubular shape. The part 101 and the bottom part 102 are integrated. Therefore, in the contaminant collection body 1 of this example, the bottom portion 102 does not come out, and oil does not leak from the gap between the bottom portion 102 and the tubular portion 101. Therefore, according to the foreign substance collection body 1 of this example, it can suppress that oil adheres to both the inner peripheral wall 213 and the bottom wall 214 of the rotation container 21, and compared with the past, the removal operation of foreign substances is possible. Such labor and time can be reduced. Moreover, the collector main body 10 is formed from paper. Therefore, the contaminant collection body 1 of the present example to which the impurities are attached can be removed from the rotating container 21 and discarded as it is. Therefore, the contaminant collection body 1 of this example is suitable for disposable.

  Since the centrifuge 2 of the present example uses the contaminant collection body 1 of the present example, it is possible to reduce the labor and time required to remove the contaminants.

(Example 2)
The contaminant collection body and centrifuge of Example 2 are demonstrated using FIG. The contaminant collection body 1 of this example has a coating layer 11 made of an oil-resistant resin on the surface of the collection body main body 10. In this example, specifically, the coating layer 11 is formed on the outer surface of the collector body 10. More specifically, the coating layer 11 is formed on the outer surface of the cylindrical portion 101 and the outer surface of the bottom portion 102. The oil resistant resin is specifically an unsaturated polyester resin. More specifically, as the oil resistant resin, for example, “Polyester resin for stacking” manufactured by Nippon Special Paint Co., Ltd. can be used.

  According to the contaminant collection body 1 of this example, the coating layer 11 suppresses oil seepage to the outer surface of the contamination collection body 1. Therefore, according to the contaminant collection body 1 of the present example, the appearance of the rotating container 21 in the container when the contamination collection body 1 is removed is excellent. Moreover, according to the foreign material collection body 1 of this example, since the collection body main body 10 is reinforced by the coating layer 11, it is advantageous to the strength improvement of the foreign material collection body 1. FIG. Furthermore, according to the contaminant collection body 1 of this example, the product generated by the reaction between the coating layer 11 and the additive in the oil component inside the contamination collection body 1 may be mixed into the purified oil. Absent. Therefore, according to the foreign matter collector 1 of this example, it is advantageous for improving the quality of the purified oil. Other configurations and operational effects are the same as those of the first embodiment.

  The centrifuge 2 of this example has the contaminant collection body 1 of this example. Other configurations and operational effects are the same as those of the first embodiment.

Example 3
The contaminant collection body and centrifuge of Example 3 are demonstrated using FIG. The contaminant collection body 1 of this example has a coating layer 11 made of an oil-resistant resin on the surface of the collection body main body 10. In this example, specifically, the coating layer 11 is formed on the inner surface of the collector body 10. More specifically, the coating layer 11 is formed on the inner surface of the cylindrical portion 101 and the inner surface of the bottom portion 102. Other configurations are the same as those of the second embodiment. Further, the foreign matter collector 1 of this example has the same action as that of Example 2 except that there is a possibility that a product or the like resulting from the reaction between the coating layer 11 and the additive in the oil component may be mixed into the purified oil. There is an effect.

  The centrifuge 2 of this example has the contaminant collection body 1 of this example. Other configurations and operational effects are the same as those of the second embodiment.

(Example 4)
The contaminant collection body and centrifuge of Example 4 are demonstrated using FIG. The contaminant collection body 1 of this example has a coating layer 11 made of an oil-resistant resin on the surface of the collection body main body 10. In this example, specifically, the coating layer 11 is formed on both the outer side surface and the inner side surface of the collector body 10. More specifically, the coating layer 11 is formed on the outer and inner surfaces of the cylindrical portion 101 and on the outer and inner surfaces of the bottom portion 102. Other configurations and operational effects are the same as those of the third embodiment.

  The centrifuge 2 of this example has the contaminant collection body 1 of this example. Other configurations and operational effects are the same as those of the third embodiment.

(Example 5)
The contaminant collection body and centrifuge of Example 5 will be described. In the contaminant collection body 1 of this example, a resin is mixed with papers constituting the collection body main body 10. Specifically, the resin is a hydrophilic polyolefin-based resin. Specifically, the content of the resin in the collector body 10 can be set to, for example, 25% by mass. Other configurations are the same as those of the second embodiment.

  According to the contaminant collection body 1 of the present example, since the minute gaps of paper are blocked by the resin, the penetration of oil into the collection body main body 10 is suppressed, and the contamination collection body 1 has an outer surface. It is advantageous for suppressing oil seepage. Further, since the strength of paper is improved by the resin, it is advantageous for improving the strength of the collector body 10. Other functions and effects are the same as those of the second embodiment.

  The centrifuge 2 of this example has the contaminant collection body 1 of this example. Other configurations and operational effects are the same as those of the second embodiment.

(Example 6)
The contaminant collection body and centrifuge of Example 6 are demonstrated using FIG. In the contaminant collection body 1 of this example, the collection body main body 10 has a packing member 12 along the opening edge. The packing member 12 is made of rubber and has a fitting groove 121 into which the opening edge of the collector body 10 is fitted.

  According to the contaminant collection body 1 of this example, the packing member 12 can suppress oil from leaking from the gap between the opening edge of the collection body main body 10 and the lid portion 211 of the rotating container 21. Other configurations and operational effects are the same as those of the second embodiment.

  The centrifuge 2 of this example has the contaminant collection body 1 of this example. Other configurations and operational effects are the same as those of the second embodiment.

  As mentioned above, although the Example of this invention was described in detail, this invention is not limited to the said Example, A various change is possible within the range which does not impair the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Contaminant collection body 10 Collection body main body 101 Cylindrical part 102 Bottom part 2 Centrifuge 21 Rotating container

Claims (9)

A contaminant collector for collecting contaminants in oil, which is disposed inside a rotating container in a centrifuge and supplied to the rotating container, by centrifugation,
It has a collector body with a cylindrical part and a bottom part that closes one open end of the cylindrical part,
The said collector main body is formed from paper, The contaminant collector which the said cylindrical part and the said bottom part are integrated.   The foreign matter collector according to claim 1, wherein the tubular portion and the bottom portion are integrated seamlessly.   The contaminant collector according to claim 1 or 2, wherein the collector body is compressed.   The contaminant collection body of any one of Claims 1-3 which has a coating layer comprised from an oil-resistant resin on the surface of the said collection body main body.   The contaminant collection body according to claim 4, wherein the oil-resistant resin is an unsaturated polyester resin.   The contaminant collection body according to claim 4 or 5, wherein the coating layer is formed on an outer surface of the collection body.   The contaminant collection body according to any one of claims 1 to 6, wherein the paper is mixed with a resin.   The said collector main body is a foreign material collector of any one of Claims 1-7 by which a packing member is provided along an opening edge.   A centrifuge having the contaminant collection body according to any one of claims 1 to 8.

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