JP6627231B2 - Particulate matter collection device - Google Patents

Description

  The present invention relates to a particulate matter trapping device.

  Airborne salts such as sea salt particles contained in the air cause corrosion of metals and the like when attached to structures containing metals and alloys (hereinafter, metals and the like). For this reason, in order to evaluate the corrosiveness caused by the atmospheric environment, the degree of adhesion of the airborne salt to the structure is measured. As a method for measuring the degree of adhesion of airborne salts, there is a method of collecting airborne salts by exposing gauze wound around a gas-permeable cylindrical support (gauze holder) to the atmosphere for a predetermined period of time (for example, , Patent Document 1).

International Publication No. WO 2014/049716

  However, in the method described in Patent Literature 1, it is necessary to perform an exchanging operation of removing the gauze from the support and winding a new gauze around the support in a continuous investigation exceeding a predetermined period. Further, in order to fix the gauze to the support, it is necessary to tie the gauze to the support with a thread or the like. Therefore, it is necessary to cut the thread or the like when removing the gauze. Thus, in the method described in Patent Literature 1, the work related to the repetition of the measurement was complicated.

  In view of the above, an object of the present invention is to provide a particulate matter collecting apparatus in which the operation of replacing a member that collects airborne salt is simpler.

  In order to solve the above-described problems and achieve the object, a particulate matter trapping device of the present invention has a support portion having a cylindrical outer peripheral surface that stands upright, a collector wound around the outer peripheral surface, A holding unit that is provided so as to be switchable between proximity and separation with respect to the collector wound around the outer peripheral surface, and that holds the collector when approaching the collector.

  As a desirable mode of the present invention, the holding part is provided rotatably with respect to the outer peripheral surface.

  As a desirable mode of the present invention, the holding part is rotatably provided by a rotation support part provided at least at one of an upper end and a lower end of the support part.

  As a desirable mode of the present invention, the above-mentioned holding part has a projection which rushes into the above-mentioned collection body in the side near the above-mentioned collection body.

  As a desirable mode of the present invention, the projection is a needle-like projection, and the holding section is a predetermined direction that is a direction orthogonal to a direction in which the support section is erected and is a direction along the outer peripheral surface. Corresponds to the width of the protrusion in the predetermined direction.

  As a desirable mode of the present invention, it has a box which has a roof and a ventilation opening provided in the side, and the above-mentioned supporter stands upright in the above-mentioned box.

  ADVANTAGE OF THE INVENTION According to this invention, the operation | work concerning the replacement | exchange of the member which collects airborne salt is more simplified.

FIG. 1 is a perspective view illustrating an example of the particulate matter trapping device according to the present embodiment. FIG. 2 is a diagram illustrating an example of the structure of the particulate matter trapping device according to the present embodiment. FIG. 3 is a perspective view illustrating an example of the structure of the support unit. FIG. 4 is a perspective view illustrating an example of a support around which the collector is wound. FIG. 5 is a diagram illustrating an example of a case where the holding unit illustrated in FIG. 2 has a rotation angle separated from a collector wound around the outer peripheral surface. FIG. 6 is a diagram illustrating an example of a case where the holding unit has the rotation angle illustrated in FIG. 5 and the collector is not wound around the support unit. FIG. 7 is a diagram illustrating an example of a positional relationship between the holding unit, the protrusion, and the collector. FIG. 8 is a diagram illustrating an example of a positional relationship between the holding unit, the protrusion, and the collector. FIG. 9 is an enlarged view of the distal end side of the holding unit 40. FIG. 10 is a front view of the holding unit and the rotation support unit when the holding unit has a rotation angle separated from the collecting body wound around the outer peripheral surface. FIG. 11 is a diagram illustrating an example of a columnar building to which a box is attached. FIG. 12 is a perspective view showing an example of the configuration inside the box.

  Next, a mode for carrying out the present invention (hereinafter, referred to as the present embodiment) will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an example of the particulate matter trapping device 1 according to the present embodiment. FIG. 2 is a diagram illustrating an example of the structure of the particulate matter trapping device 1 according to the present embodiment. The particulate matter collecting device 1 according to the present embodiment includes a support unit 10, a collecting body 15, holding units 40a and 40b, a storage unit 30, and a box 50.

  FIG. 3 is a perspective view illustrating an example of the structure of the support unit 10. FIG. 4 is a perspective view showing an example of the support 10 around which the collector 15 is wound. 3 and 4, illustration of the holding units 40a and 40b and the rotation support unit 45 described later is omitted. The support portion 10 has a cylindrical outer peripheral surface that stands upright. Specifically, the support portion 10 has a cylindrical outer peripheral surface in a lattice shape, and has air permeability. More specifically, the support portion 10 is, for example, a synthetic resin structure having a cylindrical outer shape, and a resin lattice is provided so as to form the outer peripheral surface of the cylinder. The outer peripheral surface of the support portion 10 is supported by, for example, circular plates at both ends of the cylinder. The plate is an example of a structure for supporting the outer peripheral surface, and the structure is not limited to the plate. The structure may be, for example, a radiant (so-called spoke) shape.

  The collecting body 15 is wound around the outer peripheral surface of the support 10. Specifically, the collector 15 is, for example, gauze. The collecting body 15 is wound around the cylindrical outer peripheral portion of the support portion 10, and is further held by holding portions 40a and 40b from outside as shown in FIG. When the collector 15 wound around the support 10 is exposed to the air, the collector 15 adheres and collects particulate matter (for example, airborne salt such as sea salt particles) contained in the air. .

  FIG. 5 is a diagram illustrating an example in which the holding units 40a and 40b illustrated in FIG. 2 have a rotation angle separated from the collector 15 wound around the outer peripheral surface. The holding units 40a and 40b are provided so as to be able to switch between approaching and separating from the collector 15 wound around the outer peripheral surface, and hold the collector 15 when approaching the collector 15. Specifically, the holding portions 40a and 40b are provided rotatably with respect to the outer peripheral surface. More specifically, the holding section 40a is rotatably provided by a rotation support section 45a provided at the upper end of the support section 10, for example, as shown in FIG. The holding section 40b is rotatably provided by a rotation support section 45b provided at the lower end of the support section 10, for example, as shown in FIG. The rotation support portions 45a and 45b are provided at the upper end and the lower end of the support portion 10, and can rotate the holding portions 40a and 40b at positions protruding in the radial direction of the support portion 10 with respect to the outer peripheral surface of the support portion 10. I support it. The holding units 40a and 40b rotate around the rotation shaft 44 supported by the rotation support units 45a and 45b, so that the collector wound around the outer peripheral surface of the support unit 10 or the outer peripheral surface of the support unit 10 is rotated. 15 is operated so as to switch between proximity and separation. When the holding portions 40a and 40b are close to the collector 15 wound around the outer peripheral surface of the support portion 10, the holding portion 40a, 40b sandwiches the collector 15 between the outer peripheral surface of the support portion 10 as shown in FIG. It becomes.

  FIG. 6 is a diagram illustrating an example in which the holding units 40a and 40b have the rotation angles illustrated in FIG. 5 and the collecting body 15 is not wound around the support unit 10. When the holding portions 40a and 40b have the rotation angles as shown in FIG. 5, since the outer peripheral surface of the support portion 10 is open, the collector 15 can be attached to and detached from the support portion 10. That is, when the collecting body 15 is wound around the supporting portion 10 and when the collecting body 15 wound around the supporting portion 10 is removed, the holding portions 40a and 40b move the outer peripheral surface of the supporting portion 10 as shown in FIG. The rotation angle is set to be apart from the outer peripheral surface so as to be in an open state. After the collector 15 is wound around the support 10 as shown in FIG. 5, the holding units 40a and 40b are rotated so as to approach the collector 15 as shown in FIG. The collecting body 15 can be held by 40b. Hereinafter, the holding portion 40a provided rotatably by the rotation support portion 45a provided at the upper end of the support portion 10 and the rotation support portion 45b provided at the lower end of the support portion 10 are provided rotatably. When it is not necessary to distinguish the holding unit 40b from the holding unit 40b, the holding unit 40b may be described. When there is no need to distinguish between the rotation support 45a and the rotation support 45b, the rotation support 45 may be described.

  7 and 8 are diagrams illustrating an example of a positional relationship among the holding unit 40, the protrusion 42, and the collector 15. FIG. In FIG. 7, the handle 49 is not shown in order to give priority to showing the position of the needle. The holding unit 40 has a protrusion 42 that protrudes into the collector 15 on a side close to the collector 15. The protrusion 42 of the holding unit 40 is, for example, a needle-like protrusion 42. Specifically, for example, as shown in FIGS. 7 and 8, the protrusion 42 is a needle made of, for example, a metal having a diameter of 2 mm or less or a simple substance or a compound similar thereto, and has a mesh of gauze that functions as the collector 15. The collector 15 can be penetrated like sewing. The arrangement of the protrusions 42 in the holding portion 40 is such that when the holding portion 40 is at a rotation angle close to the outer peripheral surface of the support portion 10, the protrusion 42 passes through a lattice-shaped gap on the outer peripheral surface of the support portion 10. It is provided at the position where it is possible. When the holding unit 40 is close to the collector 15, the protrusion 42 penetrates the collector 15 and passes through the gap of the lattice on the outer peripheral surface of the support 10 as shown in FIG. It is a position to enter inside. The diameter and number of the projections 42 can be changed as appropriate. Although the number of the projections 42 shown in FIG. 5 and the like is five, the number is not limited thereto, and may be four or less, or six or more. Further, the protrusion 42 is not limited to a conical needle and may be, for example, a polygonal pyramid.

  FIG. 9 is an enlarged view of the distal end side of the holding unit 40. The holding portion 40 has, for example, a width D in a predetermined direction that is a direction perpendicular to the direction in which the support portion 10 is erected and along the outer peripheral surface corresponds to the width of the projection 42 in the predetermined direction. Specifically, the width D of the holding portion 40 is sufficient to support the projection 42 having a predetermined diameter (for example, 2 mm or less) and sufficient to hold the collector 15. It is the minimum width (for example, 3 mm) that can have strength. The holding section 40 and the rotation supporting section 45 of the present embodiment are made of, for example, a synthetic resin, but the materials of the holding section 40 and the rotation supporting section 45 can be appropriately changed. The width D of the holding portion 40 and the width of the protrusion 42 are merely examples, and are not limited thereto, and may be appropriately determined in consideration of the material of the holding portion 40 and the like. By making the width D of the holding portion 40 smaller, the area of the outer peripheral surface of the collector 15 covered by the holding portion 40 can be made smaller, so that the area of the outer peripheral surface of the collector 15 exposed to the atmosphere can be reduced. It becomes easy to secure.

  FIG. 10 is a front view of the holding unit 40 and the rotation supporting unit 45 when the holding unit 40 has a rotation angle separated from the collector 15 wound around the outer peripheral surface. The holding of the rotation angle of the holding unit 40 is performed, for example, by using the projections 47 (convex portions) whose positions change in conjunction with the depressions 48 a and 48 b (recesses) provided in the rotation support unit 45 and the rotation angle of the holding unit 40. ). Specifically, for example, as shown in FIG. 10, a protrusion 47 is provided inside a wheel 46 that rotates while sharing the rotation shaft 44 with the holding unit 40. Further, the rotation support portion 45 is provided with two recesses 48 a and 48 b that can be fitted with the protrusion 47. The position of the depression 48a corresponds to the position of the protruding portion 47 when the holding portion 40 has a rotation angle close to the collector 15. The position of the depression 48b corresponds to the position of the protruding portion 47 when the holding portion 40 has a rotation angle separated from the collector 15. As shown in FIGS. 5, 7 and the like, the fitting angle between the protruding portion 47 and the recesses 48a and 48b allows the holding portion 40 to maintain the rotation angle with respect to the collecting body 15.

  In the present embodiment, a handle 49 is provided on the holding unit 40. The handle 49 is provided on the opposite side of the protrusion 42. The worker who removes the collecting body 15 can rotate the holding portion 40 by grasping the handle 49, so that the collecting body 15 can be more easily removed.

  The rotation support portion 45 is fixed to the support portion 10 by being screwed to the support portion 10 with a screw V. However, this is an example of a method of fixing the rotation support portion 45 and is not limited thereto. For example, the rotation support section 45 may be fixed to the support section 10 by bonding or the like.

  The storage unit 30 is provided below the support unit 10 and stores the liquid and the solid dropped from the collector 15. Specifically, the storage unit 30 is, for example, a container-shaped member whose upper part is open, and has a structure capable of storing the liquid and the solid that have fallen from above. More specifically, the storage unit 30 includes, for example, a cylindrical side wall 31 whose diameter is larger than the diameter of the cylinder formed by the collector 15 wound around the support unit 10, and one end of the cylinder formed by the side wall 31. And a bottom 32 that closes the lower end. The storage unit 30 receives the liquid, the solid, or both, which have fallen from above, at the bottom 32, and prevents leakage to the outside by the side wall 31.

  It is desirable that the storage unit 30 is provided at a position where the side wall 31 does not shield the side of the collector 15 exposed to the atmosphere. Further, the shape of the storage section 30 is arbitrary. For example, the storage unit 30 may have a shape obtained by dividing a capsule forming a spherical outer peripheral surface into two. The storage unit 30 has a shape capable of storing the liquid and the solid that have dropped from above. Specifically, it is assumed that the storage unit 30 has an open state at the top and a container shape or a shape depressed downward at the inside.

  The box 50 houses the support 10 around which the collector 15 is wound. Specifically, the box body 50 has, for example, a rectangular parallelepiped shape having a roof part 51, a bottom part 52, and four side parts 53. The box body 50 has a hollow inside, and is provided so as to be able to house the support portion 10 around which the collector 15 is wound.

  The box 50 has an opening for ventilation on the side. Specifically, the box body 50 has a louver on the side, for example. More specifically, each of the four side surfaces 53 of the box body 50 is provided such that a plurality of blades 53a are parallel to each other at intervals in the vertical direction. The box 50 is provided so that the atmosphere (wind) outside the box 50 can pass through the inside of the box 50 by the gap between the blades 53a functioning as an opening.

  The wing plate 53a is provided so as to be inclined downward from the inside of the box body 50 to the outside. Thereby, falling objects such as rain can be suppressed from entering the inside of the box body 50 from the opening. In addition, the roof portion 51 is provided so as to project outside the side surface portion 53 of the box body 50. Accordingly, it is possible to more reliably suppress falling objects such as rain from falling onto the collecting body 15 wound around the support portion 10. The box 50 is a so-called hundred-leaf box.

  FIG. 11 is a diagram illustrating an example of a columnar building 60 to which the box body 50 is attached. The box 50 is provided so that the support 10 around which the collector 15 is wound can be introduced from the outside to the inside, and the support 10 held inside can be taken out together with the wound collector 15. Is desirable. In the present embodiment, one of the four side surfaces 53 of the box body 50 is a door and is provided to be openable and closable. It is desirable that the shutter be provided on the opposite side (for example, in the case of the northern hemisphere, on the north side) opposite to the direction passing through the meridian (for example, in the case of the northern hemisphere) above the horizon in the diurnal movement of the sun. In addition, in the example shown in FIG. 11, by setting the door to the side of the columnar building 60 (for example, a utility pole or the like), the installation and collection of the support 10 around which the collector 15 is wound around the columnar building 60 is collected. Is easier for the worker to perform.

  FIG. 12 is a perspective view showing an example of the configuration inside the box 50. In FIG. 12, illustration of the storage unit 30 is omitted. The support part 10 is erected inside the box 50. Specifically, inside the box 50 of the present embodiment, the support 10 around which the collector 15 is wound is held in an upright state, and the collector 15 wound around the support 10 is placed in the box 50. Is provided with a holding structure for exposing it to the atmosphere inside. More specifically, the holding structure includes, for example, a shaft 21 that is a rod-shaped member, and two locking portions 22 and 23 that lock both ends of the shaft 21. The shaft 21 is provided so as to penetrate the plate of the support 10 in a state substantially overlapping the central axis of the cylindrical shape of the support 10. Although the support 10 of the present embodiment is fixed to the shaft 21, the shaft 21 may be insertable into and removable from the support 10. The storage part 30 is fixed below the support part 10 by being fixed to the shaft 21, for example. The two locking portions 22 and 23 are provided vertically in a positional relationship having an interval corresponding to the length of the shaft 21 so that the shaft 21 is provided vertically, for example. The support portion 10 is provided so that the central axis of the cylinder is vertical by the two locking portions 22 and 23 locking the shaft 21 to which the support portion 10 is fixed inside the box 50. For example, the lower one of the two locking portions 22 and 23 is a locking portion 22 (see FIG. 2) having a hole into which the shaft 21 can be inserted, and the other is a plate-shaped member 23a and a rotating member 23b. The locking portion 23 has a mechanism for holding the shaft 21 having entered the notch portion 23c formed in the plate-like member 23a by the rotating member 23b. The notch 23c is provided, for example, from the side of the horizontally provided plate-like member 23a toward the inside, and has a width corresponding to the diameter of the shaft 21. The plate-like member 23a provided with the notch 23c is capable of entering or removing the shaft 21 from the side. The rotating member 23b is rotatably supported on a fulcrum 23d on one surface side of the plate-like member 23a, and rotates so as to switch between opening and closing the entrance side of the notch 23c. The specific form of the two locking portions 22 and 23 is merely an example, and is not limited to this, and can be appropriately changed.

  In the present embodiment, one of the two locking portions 22 and 23 that locks above the shaft 21 is fixed to the roof portion 51 side in the box 50. The other of the two locking portions 22 and 23 that locks below the shaft 21 is fixed to the bottom 52 side in the box 50.

  As described above, according to the present embodiment, the support portion 10 having the cylindrical outer peripheral surface to be erected, the collector 15 wound on the outer peripheral surface, and the proximity and separation of the collector 15 wound on the outer peripheral surface. And a holding unit 40 for holding the collector 15 when approaching the collector 15. For this reason, by bringing the holding unit 40 close to the collecting body 15 wound around the support unit 10, the collecting body 15 wound around the supporting unit 10 is held, and the holding unit 40 is moved from the collecting body 15 wound around the supporting unit 10 to the holding unit. The collection body 15 can be easily detached from the support 10 by separating the 40. Therefore, the installation and replacement of the collector 15 can be performed more easily. As described above, according to the present embodiment, the operation relating to the replacement of the member for collecting the airborne salt is more simplified.

  Further, the holding unit 40 is provided so as to be rotatable with respect to the outer peripheral surface. Therefore, the switching between the approach and the separation of the holding unit 40 with respect to the collecting body 15 can be performed by the rotation operation. Therefore, switching between the approach and the separation of the holding unit 40 with respect to the collecting body 15 at the time of installing and replacing the collecting body 15 can be performed more easily.

  In addition, the holding unit 40 is rotatably provided by rotating support units 45 provided at the upper and lower ends of the support unit 10. For this reason, the support part 10 and the holding part 40 can be handled integrally. Therefore, since the positioning of the collecting body 15 wound around the supporting portion 10 and the holding portion 40 is easier, the collecting body 15 can be more easily installed.

  In addition, the holding unit 40 has a protrusion 42 protruding into the collector 15 on a side close to the collector 15. For this reason, it is possible to more reliably hold the collecting body 15 by piercing the projection 42 in the collecting body 15.

  Further, the protrusion 42 is a needle-like protrusion 42, and the holding portion 40 has a width in a predetermined direction which is a direction orthogonal to the standing direction of the support portion 10 and a direction along the outer peripheral surface. In the predetermined direction. For this reason, it becomes easy to secure the area of the outer peripheral surface of the collector 15 exposed to the atmosphere.

  The support 10 around which the collector 15 is wound is held in the box 50. For this reason, it is possible to prevent falling objects such as rain from falling onto the collecting body 15 wound around the support portion 10.

  In addition, since the collector 15 wound around the support portion 10 has a cylindrical shape, the airborne salt that flies by wind and the like from more directions intersecting the center axis of the cylinder can be collected more evenly. can do.

  Further, a storage unit 30 is provided below the support unit 10 and stores the liquid and the solid dropped from the collector 15 wound around the support unit 10. For this reason, after adhering to the collector 15, the liquid and the solid dropped from the collector 15 can be stored. Therefore, by collecting the liquid and the solid stored in the storage unit 30 at the time of collecting the collecting body 15, the total amount of the airborne salt collected by the collecting body 15 can be grasped with higher accuracy. .

  The embodiments have been described above, but the present invention is not limited by the contents of these embodiments. The above-mentioned components include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those that are in the so-called equivalent range. Further, the components described above can be appropriately combined. Furthermore, various omissions, replacements, or changes of the components can be made without departing from the spirit of the above-described embodiments and the like.

  For example, the holding unit 40 may be provided on at least one of the upper end and the lower end of the support unit 10. When the holding portion 40 is provided at one of the upper end and the lower end of the support portion 10, for example, the length of the holding portion 40 extending from one of the rotation support portions 45 is set to be equal to the height of the outer peripheral surface of the support portion 10. By associating with the length along the direction, the collector 15 wound around the outer peripheral surface can be held more reliably.

  Further, in the above embodiment, the support portion 10 is erected by the shaft 21 and the two locking portions 22 and 23, but this is an example of a specific form for erection of the support portion 10. The present invention is not limited to this, and can be changed as appropriate. For example, a fiber, string or cloth-like extending portion provided to extend from both ends of the cylinder of the support portion 10 is provided, and both ends of the extending portion are connected to the ceiling side of the box 50 (for example, the roof portion 51). You may make it hold | maintain on the lower surface side etc. and the bottom part 52 side (for example, the upper surface side of the bottom part 52).

  In addition, an index indicating the direction during the period of exposure to the air may be given to the support unit 10 or a configuration that is integrally treated with the support unit 10. For example, an index such as a center line (for example, a line along the extending direction of the cylinder) is attached to a surface of the outer peripheral surface of the shaft 21 to which the support portion 10 is fixed, which is to face the door of the box body 50. May be. In this case, the worker installed the support portion 10 around which the cotton was wound so that the indicator was located at the front, so that after the collection of the support portion 10 around which the cotton was collected, which portion was facing which direction. Can be easily grasped.

  Further, the collector 15 can collect not only the airborne salt such as sea salt particles, but also other particulate matter existing in the atmosphere.

  The provision of the particulate matter trapping device 1 is not limited to the columnar building 60. The particulate matter trapping device 1 can be provided in any structure that can face a gas-permeable space, such as a steel tower. Further, the particulate matter collecting device 1 may be installed on the ground.

DESCRIPTION OF SYMBOLS 1 Particulate matter collection device 10 Supporting part 15 Collecting body 21 Shaft 22, 23 Locking part 30 Storage part 40 Retaining part 42 Protrusion 45 Rotation support part 50 Box body 51 Roof part 53 Side part 53a Blade plate

Claims (6)

A support portion having a cylindrical outer peripheral surface to be erected,
A collector wound around the outer peripheral surface,
A holding unit that is provided so as to be switchable between proximity and separation with respect to the collector wound around the outer peripheral surface and holds the collector when approaching the collector,
A rotation support portion provided on at least one of an upper end and a lower end of the support portion and rotatably supporting a rotation axis of the holding portion;
A wheel whose rotation angle is determined in accordance with the rotation angle of the holding unit, sharing the rotation axis with the holding unit,
The wheel is provided with a protruding portion that protrudes toward the rotation support portion,
The rotation support portion is provided with two recesses that can be fitted with the protrusions,
The rotation angle of the holding portion at which one of the two recesses and the protrusion are fitted is a rotation angle at which the holding portion is close to the collector,
The particulate matter collecting device according to claim 1, wherein a rotation angle of the holding portion at which the other of the two recesses and the protrusion are fitted is a rotation angle at which the holding portion is separated from the collection body. Comprising two said holding parts,
One of the two holding portions is rotatably provided by the rotation support portion provided at an upper end of the support portion,
The other of the two holding portions is rotatably provided by the rotation support portion provided at a lower end of the support portion,
The one and the other face each other across the upper end and the lower end,
The particulate matter trapping device according to claim 1, wherein a non-contact part is provided between the one part and the other part so that the holding part does not contact the trapping body. 3. The particulate matter trapping device according to claim 1, wherein the holding portion has a handle on a side opposite to a side close to the trapping body. 4. The particulate matter trapping device according to any one of claims 1 to 3, wherein the holding unit has a protrusion that protrudes into the trapping body on a side close to the trapping body. The protrusion is a needle-like protrusion,
The width of the holding portion in a predetermined direction which is a direction orthogonal to a direction in which the support portion is erected and which is a direction along the outer peripheral surface corresponds to a width of the projection in the predetermined direction. The particulate matter collecting device according to the above. A box having a roof and an opening for ventilation provided on the side,
The particulate matter trapping device according to any one of claims 1 to 5, wherein the support portion is provided upright in the box.

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