JP2013100840A - Seal member, and seal structure and mist elimination device equipped therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seal structure which seals a gap between structures oppositely joined to each other and contains a seal member for preventing the leakage of oil mist or the like.SOLUTION: The structure includes a fixing member 30 which makes joining surfaces 23 formed at joining ends 22 of cylindrical bodies 21 to come into intimate contact with sealing surfaces 2 opposed to a seal member 1, and fastening slopes 31 for fastening the joining surfaces 23 of the joining ends 22 toward the sealing surfaces 2 under a state that the joining surfaces 23 are close contact with the sealing surfaces 2. The fixing member 30 is formed of a fastening band 32 for acting the force F3 by which the fastening slopes 31 axially presses the seal member 1 to the joining ends 22 by fastening the joining ends 22 of the cylindrical bodies 21 in an axial center direction of the seal member 1 from an outer peripheral side with the joining surfaces 23 brought into intimate contact with the sealing surfaces 2.

Description

  The present invention relates to a seal member that seals between structures that are opposed to each other, a seal structure that includes the seal member, and a mist removing device that includes the seal structure.

  Conventionally, seal structures that prevent oil leakage and the like have been employed in various technical fields. In this sealing structure, for example, in the case of connection surfaces of structures facing two parts, a sealing member (also referred to as “gasket”) is provided between them to achieve sealing.

  For example, as a prior art related to this type of sealing member, there is a gasket in which a longitudinal groove portion is continuously formed between an upper portion and a lower portion in its cross section. The gasket is provided with a first extending portion and a second extending portion in the upper portion and an upper longitudinal groove portion therebetween, and a first outer longitudinal groove portion and a second longitudinal groove portion on a side surface of the lower portion. (For example, refer to Patent Document 1).

  Further, as a prior art related to the seal structure, a shaft in which a large diameter portion and a small diameter portion are formed concentrically, and similarly, a large diameter portion and a small diameter portion are formed concentrically and have a shaft hole through which the shaft is inserted. A seal member having an inner peripheral seal lip and an outer peripheral seal lip; and mounting the seal member between the shaft and the housing and inserting the shaft; Some have a pressing portion that presses toward the inner peripheral surface and presses the outer peripheral side seal lip toward the outer peripheral surface (see, for example, Patent Document 2).

  On the other hand, for example, in a machine factory or the like, cutting oil is supplied to cool or lubricate a tool, and this cutting oil scatters in the air during processing to cause an oil mist (in this specification and claims). In this case, both “oil-based” and “water-soluble” are included. The oil mist thus scattered not only harms the health of the worker, but also causes contamination of surrounding machines and causes air pollution when discharged outside the factory.

  Therefore, the present applicant has invented a mist removing device that collects and removes oil mist and the like in such a gas, and has filed an application earlier. In this mist removing apparatus, a tubular filter is erected on a support plate, a mist-containing gas is supplied to the hollow portion of the tubular filter from the lower part, and the mist collected by the tubular filter is dropped from the tubular filter and is disposed below. It discharges to the mist reservoir (see, for example, Patent Document 3).

JP 2007-127270 A JP 2010-65810 A JP 2010-44202 A

  However, in the gasket described in Patent Document 1, the first extension portion is formed by disposing the lower portion in the groove-shaped portion provided on one of the opposed surfaces and pressing the other surface in the upper portion. And the second extending portion are deformed to seal the two surfaces, and thus can be used only for the joint portion in a structure having a limited structure, and the structure is joined oppositely as in the present invention. It is not possible to seal between objects.

  Further, the seal structure described in Patent Document 2 is to widen the seal lip by inserting the shaft into the shaft hole of the housing. It is not something that can be sealed.

  Furthermore, in the case of the mist removing device described in Patent Document 3, the filter area can be easily changed by changing the height of the disposing portion for disposing the tubular filter, but the seal portion can be further stabilized. It is desired to maintain sealing performance and facilitate assembly.

  Therefore, the present invention provides a seal member that seals between structures to be joined oppositely to prevent leakage of oil mist, a seal structure including the seal member, and a mist removing apparatus including the seal structure. With the goal.

  In order to achieve the above object, a sealing member of the present invention is a ring-shaped sealing member at a joining end portion for joining a structure having a cylindrical cross-section facing each other in the axial direction, and the joining end portion of the structure A seal main body portion having a predetermined thickness that is opposed to be in close contact with the joint surface formed on the inner surface, and an inner peripheral convex portion that is formed on the inner peripheral portion of the seal main body portion and wraps around the inner peripheral portion of the joint surface And an outer peripheral convex part that is formed on the outer peripheral part of the seal main body part and goes around the outer peripheral part of the joint surface. According to this configuration, if the joint end of the structure is brought into close contact with the seal surface facing the seal member, the joint surface of the joint end is in close contact with the inner peripheral convex portion and the outer peripheral convex portion of the seal main body portion. Can be sealed.

  Moreover, the said sealing surface may be formed in the circular arc shape closely_contact | adhered to the circular arc part of the inner periphery and outer periphery of the joining surface formed in the joining end part of the said structure. If comprised in this way, since the joining surface of the joining edge part currently formed in circular arc shape and the sealing surface of a sealing member will closely_contact | adhere with arc-shaped surface, it will be in contact with uniform surface pressure, and the stable sealing performance will be achieved. Can keep.

  Further, the inner circumferential convex portion may have an inner circumferential extending portion that extends to the inner circumference of the joining surface that is opposed and joined to a height near the arc center of the seal surface. If comprised in this way, since the inner peripheral extension part formed in the inner peripheral convex part of a sealing member will wrap around to the inner periphery of a joint surface, it will contact | adhere to the circular arc center vicinity of a seal surface, Therefore Oil mist and the like inside the structure can be sealed with the inner surface of the structure in contact with the inner surface of the structure.

  Moreover, the said seal main body part may have a slit part extended in radial direction from the inner peripheral part to the predetermined position of an outer peripheral part. If comprised in this way, if a disk shaped board | plate material is inserted in a slit part, a board | plate material can be hold | maintained to the inner peripheral part of a sealing member, and the outer peripheral part of the board | plate material can be sealed with a sealing member.

  On the other hand, the seal structure of the present invention is a seal structure including any one of the above-described seal members, and is provided at a joint end portion of the structure so as to be in close contact with the seal surface facing the seal member. A joining member formed; and a fixing member having a fastening slope for fastening the joining end portions toward each other in a state where the joining surface is in close contact with the seal surface. According to this configuration, the joint surface is further pressed against the seal surface by the fastening inclined surface of the fixing member in a state where the joint surface at the joint end portion of the structure is in close contact with the seal surface of the seal member. Sealing at the joint end is possible.

  In addition, the fixing member tightens the joint end portion in the axial direction of the seal member from the outer peripheral side in a state where the joint surface is in close contact with the seal surface, so that the tightening inclined surface causes the joint end portion to A tightening band that opposes and exerts a force pressing toward the seal member may be provided. According to this structure, the joining surface is brought into intimate contact with the sealing surface by the force of pressing the joining end toward the seal member by the tightening slope by the radial tightening operation of the joining end by the fastening band. It can be easily sealed by the tightening operation of the tightening band.

  Further, the tightening band is configured such that a force acting point of a tightening slope for tightening the joining end portion in the axial direction is located on an inner peripheral side with respect to an outer peripheral end portion of the plate member inserted into the slit portion. It may be. If comprised in this way, the force which acts on a sealing member via a junction end part by tightening a clamping band to an axial center direction will act on the inner peripheral side rather than the outer peripheral end part of the board | plate material inserted in the slit part. Therefore, both the holding of the plate material by the sealing member and the sealing can be achieved.

  On the other hand, the mist removing apparatus of the present invention is a mist removing apparatus having any one of the above-described seal structures, and supplies a mist-containing gas and discharges the collected mist, and above the drain part. A filter part disposed in a vertical direction, a tubular body surrounding the filter part, a lid for closing the upper end of the tubular body, and a mist in the hollow part of the tubular filter A supply device for supplying a gas, and the cylindrical body has a joint end at an end in the vertical direction, and the seal structure at the joint end for joining the cylindrical body in the axial direction. . In this specification and claims, the collected mist in the mist-containing gas is referred to as “mist”. Further, the longitudinal arrangement of the tubular filter means that the axial center direction is arranged vertically. According to this structure, the mist removal apparatus which collects the mist in the mist containing gas supplied from the lower part into the hollow part of the tubular filter from the drain part by the tubular filter, and discharges the collected mist to the lower part of the tubular filter. In the above, the joining end portion of the cylindrical body joined to face each other so as to form the filter portion can be sealed with a seal structure.

  In addition, the filter portion has a filter mounting plate for attaching the tubular filter at a lower end, and tightens the joining end portion with the fixing member in a state where the filter mounting plate is inserted into the slit portion of the seal member. A filter mounting plate may be fixed to the seal member. If comprised in this way, a filter mounting plate can be hold | maintained and sealed by the slit part of a sealing member, and the joining surface of a joining end part can be sealed with the sealing surface which this sealing member opposes, and three types are sealed by a sealing member. The members can be sealed simultaneously.

  Moreover, the extension unit part which has a cylindrical body with the same diameter as the said cylindrical body may be provided, and the said sealing structure may be provided in the joining end part of the said cylindrical body. If comprised in this way, the height of the space which arrange | positions a tubular filter is possible by arrange | positioning an extension unit part vertically above a filter part, and the filter area can be changed by changing the length of a tubular filter. Can be changed. Further, the extension unit portion may be provided with a deodorizing unit having a deodorizing material.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to maintain the sealing performance in the joining edge part of the structure joined facing, and to prevent leaks, such as oil mist. In addition, when the structure is assembled, it can be easily arranged and assembled at the position of the joining end.

It is sectional drawing of the sealing member which concerns on this invention. (a)-(f) is sectional drawing of the example from which the sealing member shown in FIG. 1 differs. It is a whole perspective view of the sealing member shown in FIG. It is an exploded sectional view showing a seal structure concerning the present invention. It is a perspective view which shows the clamping lever of the clamping band in the seal structure shown in FIG. It is sectional drawing of the assembly-like body of the seal structure shown in FIG. It is a force action figure to the seal member in the seal structure shown in FIG. It is a partial cross section front view of the mist removal apparatus which concerns on this invention provided with the seal structure shown in FIG. It is a partial cross section side view of the mist removal apparatus shown in FIG. It is XX arrow sectional drawing shown in FIG. It is a partial expanded sectional view of the mist removing apparatus shown in FIG. 9, (a) is sectional drawing in a XIA part, (b) is sectional drawing in a XIB part.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following embodiments, a cylindrical body in a mist removing device 50 to be described later is taken as an example of a cylindrical cross-sectional structure, and a sealing member 1 that seals a joining end portion of the cylindrical body and a sealing structure including the same 20 will be described. Further, in the following embodiments, as will be described later, an example in which the joining end portion of the cylindrical body is formed in an arc shape, and thus the seal surface 2 of the seal member 1 is also formed in an arc shape will be described.

  As shown in FIG. 1, the sealing member 1 is opposed to be in close contact with a joining surface 23 (FIG. 4) formed on a joining end 22 (FIG. 4) of a cylindrical body 21 (FIG. 4) in its cross section. Thus, a seal body 3 having a predetermined thickness on which a seal surface 2 is formed is provided. The seal surface 2 of this embodiment is formed in an arc shape that is in close contact with the joint surface 23 of the joint end 22.

  Further, the seal body portion 3 is formed with an inner peripheral convex portion 5 that wraps around the inner peripheral portion of the joint surface 23 at the inner peripheral portion, and an outer peripheral convex portion 6 that wraps around the outer peripheral portion of the joint surface 23 at the outer peripheral portion. Yes. The inner peripheral convex portion 5 and the outer peripheral convex portion 6 are formed in a symmetric shape in the vertical direction with respect to the center of the seal main body portion 3 in the illustrated cross section.

  The inner peripheral convex portion 5 has an inner peripheral extending portion 7 formed so as to go around to the inner periphery of both joint surfaces 23 that are opposed and joined. The inner peripheral extending portion 7 extends so as to extend to a position near the arc center O of the seal surface 2 (see FIG. 5 for the assembled state).

  Further, in the seal member 1 of this embodiment, the seal body 3 is provided with a slit portion 8 extending in the radial direction from the inner peripheral portion to the predetermined position of the outer peripheral portion over the arc center O of the seal surface 2. . The slit portion 8 is used to seal and support the periphery of the filter mounting plate 40 (FIG. 6) when used as a seal structure 20 of a mist removing device 50 described later. Details will be described later.

  As for the size relationship in the cross section of the seal member 1, the height H 1 of the inner peripheral convex portion 5 is formed to be larger than the height H 2 of the outer peripheral convex portion 6. The slit portion 8 is formed to a distance W2 extending in the radial direction to a predetermined position on the outer peripheral portion with respect to the distance W1 from the inner peripheral surface to the arc center O.

  2 (a) to 2 (f) are cross-sectional views of different examples of the seal member 1, and the seal member 1 may have a shape other than the preferable cross-sectional shape shown in FIG. 1). FIG. 2A shows an example in which the slit portion 8 is formed up to an intermediate portion between the inner peripheral surface and the outer peripheral surface. FIG. 2B is an example in which the slit portion 8 is not provided, and can be used as a seal member used where there is no filter mounting plate 40 described later. 2 (c) shows an example in which the inner peripheral surface is formed in a convex shape, FIG. 2 (d) shows an example in which the inner peripheral surface is formed in a concave shape, and FIG. 2 (e) shows an inner peripheral convex portion. 5 is an example formed low. FIG. 2 (f) shows an example in which an O-ring 9 is inserted into the inner peripheral side end of the slit portion 8. In the case of this example, the seal member 1 common to the place where the filter mounting plate 40 described later is provided can be used to suppress excessive deformation of the seal member 1 when used in a place where the filter mounting plate 40 is not provided. These forms are examples, and the partial cross-sectional shape of the seal member 1 may be determined according to the use conditions and the like.

  As shown in FIG. 3, the seal member 1 is formed in a ring shape so as to come into contact with a joining end portion 22 that joins the cylindrical body 21 facing each other in the axial direction. In this figure, the cross section is shown exaggerated with respect to the diameter of the seal member 1, but as the actual seal member 1, for example, the cross section height H1 (FIG. 1) is about 20 mm and the diameter is about 600 mm. It is formed in the size etc.

  As a manufacturing method of the seal member 1, for example, a product having a cross-sectional shape shown in FIG. 1 is linearly extruded by an extrusion molding machine or the like, and is cut by a necessary circumferential length. At that time, considering the difference in circumferential length between the inner surface and the outer surface, cutting is performed so as to form a smooth ring shape. Then, there is a method of forming the ring-shaped sealing member 1 by bonding the end portions with an adhesive. Further, the material of the seal member 1 varies depending on use conditions, but NBR 60 (nitrile rubber hardness 60) or the like is used when used for an oil mist removing device or the like.

  According to the sealing member 1 configured as described above, as will be described later, if the joining end portion 22 of the structure is brought into close contact with the opposing seal surface 2 of the sealing member 1, the inner peripheral convex portion 5 of the seal main body portion 3 and The joint surface 23 of the joint end portion 22 can be tightly sealed with the outer peripheral convex portion 6 (see FIG. 6 described later).

  In addition, since the joint surface 23 of the joint end portion 22 and the seal surface 2 of the seal member 1 are in close contact with each other with an arcuate surface, stable sealing performance can be maintained.

  In addition, the inner peripheral extending portion 7 formed on the inner peripheral convex portion 5 of the seal member 1 wraps around to the inner periphery of the joining surface 23 and reaches a position near the arc center O of the sealing surface 2. It is possible to prevent leakage of oil mist and the like inside the structure in contact with the inner surface of the structure having a cylindrical cross section.

  In addition, the slit part 8 can hold | maintain the filter attachment board 40 in the inner peripheral part of the sealing member 1, if a disk-shaped filter attachment board (plate | board material) 40 is inserted so that it may mention later. By sandwiching and joining between the joining end portions 22, three of the outer peripheral portion of the filter mounting plate 40 and the joining end portions 22 of the upper and lower tubular bodies 21 can be sealed together by one seal member 1. it can.

  Next, based on FIGS. 4-7, the sealing structure 20 provided with the said sealing member 1 is demonstrated. The seal structure 20 is exemplified by a portion where the cylindrical body 21 is joined up and down.

  As shown in FIG. 4, the seal structure 20 includes the seal member 1, a joining end 22 of a cylindrical body 21 that is brought into close contact with the opposing seal surface 2 of the seal member 1, and a slit portion 8 of the seal member 1. And a fixing member 30 for tightening the joining end portion 22 from the outer peripheral side (shown in FIG. 9 described later in plan view).

  The fixing member 30 is clamped to obliquely press the arc portion 24 formed on the outer periphery of the joint end 22 in a state where the joint end 22 is brought into contact with the opposing seal surface 2 of the seal member 1. A fastening band 32 having a slope 31 is provided (FIG. 6). The fastening band 32 in which the fastening slope 31 is formed has a substantially U-shaped cross section. The fastening band 32 in this figure shows only a cross-sectional portion.

  As shown in FIG. 5, the tightening band 32 is a so-called outer lever band, and the tightening band 33 provided so as to surround the joining end portion 22 is closed with the tightening lever 33 provided in the butt division portion. The diameter is reduced by tilting in the direction, and the joining end 22 is fastened and fixed inward in the radial direction. Although this is a known technique, in this embodiment, pins 34 and 35 fixed to the opposite ends of the fastening band 32 are provided, and one end of the fastening lever 33 is rotatably attached to one pin 34. It has been. Further, at both sides of the tightening lever 33, one end is supported by the pin 35 and the other end is rotated by the pin 36 when the other end exceeds the pin 34 which is a rotation fulcrum of the tightening lever 33. A link plate 37 that is freely supported is provided. Therefore, when the tightening lever 33 is separated from the tightening band 32, the end portions of the tightening band 32 are opened, and when the lever is laid along the tightening band 32, the diameter is narrowed and the diameter is reduced.

  Thus, the fastening band 32 of this embodiment reduces the diameter of the portion of the fastening band 32 located on the outer periphery of the ring-shaped joining end portion 22 by closing the fastening lever 33 (FIG. 10). The joining end portion 22 is pressed against the sealing surface 2 of the sealing member 1 by the tightening inclined surface 31 to be sealed. The tightening band 32 of this embodiment has a structure that can be tightened toward the joining end portion 22 with a single touch by the tightening lever 33. For example, the joining end portion 22 is screwed into the joining end portion 22 like a bolt band. It is good also as a structure which winds and fixes.

  As shown in FIG. 6, according to this seal structure 20, the joint surface 23 formed on the joint end portion 22 of the cylindrical body 21 is brought into close contact with the seal surface 2 facing the seal member 1, and the slit portion 8 is The filter mounting plate 40 is inserted, and the joining end portion 22 is tightened by the fastening band 32 from the outer peripheral side of the joining end portion 22 in a state where the joining surface 23 is in close contact with the seal surface 2.

  Then, by tightening the joint end portion 22 in the radial direction with the tightening band 32 toward the center, the joint surfaces 23 of both the joint end portions 22 are sealed to the seal surface 2 of the seal member 1 by the tightening inclined surface 31. Press towards.

  Due to the radial tightening force F1 of the joint end portion 22 by the tightening band 32, a force F2 that obliquely tightens the joint surface 23 toward the seal surface 2 acts on the joint end portion 22 in contact with the tightening inclined surface 31. Similar to the force F2, the joint surface 23 is brought into close contact with the seal surface 2 of the seal member 1 by a force F3 that presses the joint end portion 22 toward the seal member 1.

  The tightening band 32 is tightened by closing the tightening lever 33 to reduce the diameter of the tightening band 32 positioned on the outer periphery of the ring-shaped joining end 22 and joining the tightening band 32 with the tightening slope 31. Since the end 22 can be pressed against the sealing surface 2 of the sealing member 1, it can be performed with a simple operation.

  Moreover, since the filter mounting plate 40 is inserted into the slit portion 8 in this embodiment, the joint end portion 22 and the filter mounting plate 40 are fixed at the same time by tightening the joint end portion 22 with the tightening band 32. can do. In addition, the outermost peripheral end portion of the slit portion 8 is outside the position (force action point) at which the tightening slope 31 of the tightening band 32 is in contact with the joining end portion 22 (outside the one-dot chain line connecting the force F3). Therefore, the filter mounting portion 40 can be held and sealed by the force that presses the joint end portion 22 against the seal member 1.

  FIG. 7 is a diagram schematically showing a state in which the sealing member 1 is pressed by the joint end 22. When the sealing surface 2 is pressed by the joint end 22, the seal member 1 is slightly deformed and the joint end is pressed. Close to the part 22.

  As described above, according to the seal structure 20, the joint end 22 of the cylindrical member (structure) 21 is in close contact with the seal surface 2 of the seal member 1. Is tightened by the tightening band 32 from the outer peripheral side toward the axial center of the seal member 1, and the force that presses the joining surface 23 against the seal surface 2 by the tightening inclined surface 31 of the tightening band 32 acts oppositely. Therefore, sealing at the joining end portion 22 of the cylindrical body 21 is possible.

  That is, the tightening inclined surface 31 exerts a force that presses the joint end 22 toward the seal member 1 by the radial tightening operation of the joint end 22 by the tightening band 32, and thus the joint surface 23 is sealed by this force. It can be pressed and brought into close contact with the surface 2 and sealed by a simple fixing operation.

  Note that the above-described seal member 1 provided in the seal structure 20 is provided with the inner peripheral convex portion 5 and the outer peripheral convex portion 6, so that the seal member 1 is positioned in a state of being placed on the joining end portion 22 of the lower cylindrical body 21. Since the positioning can be performed even when the joining end 22 of the cylindrical body 21 to be placed on the upper part is placed on the upper part, the seal structure 20 can be assembled with good workability when the cylindrical body 21 is placed.

  Next, based on FIGS. 8-11, the mist removal apparatus 50 is demonstrated. In addition, the same code | symbol is attached | subjected to the structure same as the structure shown to the said FIG. 1, 3-7, and the description is abbreviate | omitted.

  As shown in FIGS. 8 and 9, the mist removing apparatus 50 of this embodiment includes a gantry 60 supported by four casters 61, a drain portion 70 provided on the gantry 60, and the drain. The filter part 80 provided in the upper part of the part 70 and the extension unit part 90 provided in the upper part of this filter part 80 are provided.

  The gantry 60 has a frame structure and is provided with a blower (feeder) 62 on the lower surface. The blower 62 is driven by a drive motor 63 and sucks air from the filter unit 80 to which the exhaust pipe 64 is connected, thereby supplying (suctioning) a mist-containing gas A to the hollow portion of the tubular filter 100 as will be described later. ). Exhaust air from the blower 62 is discharged through a silencer duct 65. The blower 62 is configured such that the output is variable, and the suction amount from the inside of the filter unit 80 can be variably controlled. As this variable control, for example, inverter control can be employed.

  The bottom plate 75 of the drain part 70 is fixed to the upper end of the gantry part 60. A drain portion cylindrical body 71 that forms an outer shell of the drain portion 70 is fixed to the bottom plate 75. The bottom plate 75 and the drain cylindrical body 71 are fixed by attaching a packing 77 (for example, rubber packing) to the concave receiving portion 76 formed around the bottom plate 75 as shown in the sectional view of FIG. The joint end 72 formed on the lower end of the drain cylindrical body 71 is placed on the packing 77 and tightened with the tightening band 39. The fastening band 39 has the same structure as the fastening band 32 described above, but has a small height direction dimension.

  As shown in FIGS. 8 and 9, the filter portion 80 provided on the upper portion of the drain portion 70 has a filter portion cylindrical body 81 that forms an outer shell of the filter portion 80. And the joining end part 82 provided in the lower end of this filter part cylindrical body 81 and the joining end part 72 provided in the upper end of the said drain part cylindrical body 71 are joined by the sealing structure 20 mentioned above. Yes.

  A filter mounting plate 40 for arranging the tubular filter 100 is provided at the lower end of the filter portion 80. The filter mounting plate 40 is formed in a disk shape, and a mounting portion 41 for arranging a plurality of tubular filters 100 is provided on the upper surface thereof. The filter mounting plate 40 is a partition plate between the drain part 70 and the filter part 80. The attachment portion 41 is provided with a flange portion 43 upward from the periphery of the circular opening hole 42. The tubular filter 100 is configured such that the flange 43 provided on the filter mounting plate 40 and the lower end inner diameter coincide with each other.

  The tubular filter 100 is formed in a tubular shape whose upper end is closed, and is inserted into the flange portion 43 provided in the mounting portion 41 of the filter mounting plate 40 from above, so that the axial direction of the tubular filter 100 is vertical. 100 can be disposed on the upper surface of the filter mounting plate 40. In the tubular filter 100 of this embodiment, as shown in FIG. 10, six filters are radially arranged on the upper surface of the filter mounting plate 40 at equal intervals.

  In this embodiment, six tubular filters 100 are provided. However, by increasing or decreasing the number of the tubular filters 100, the filter area can be flexibly changed according to various cutting machines or the use conditions. Therefore, the number can be adjusted as needed.

  As shown in FIGS. 8 and 9, as the tubular filter 100, a filter formed of a plurality of layers is used. The mist collected by the tubular filter 100 drops and accumulates in the drain portion 70 by gravity. In the mist removing device 50, the tubular filter 100 having a circular cross section is used, but a tubular filter 100 having a polygonal cross section or the like may be used.

  Further, an exhaust port 85 is provided on one side of the filter unit tubular body 81, and the exhaust port 85 and the blower 62 are connected by an exhaust pipe 64. Thus, by driving the blower 62, the air a in the filter unit 80 is sucked from the exhaust port 85 through the exhaust pipe 64.

  Therefore, according to the tubular filter 100, the mist-containing gas A that has entered the hollow portion of the tubular filter 100 from the opening hole 42 of the filter mounting plate 40 passes from the lower portion of the tubular filter 100 through the filter surface 101 around the side surface to the mist. The gas a from which the mist has been removed flows from the exhaust port 85 to the blower 62 through the exhaust pipe 64.

  Further, a check valve 45 is provided at the center of the filter mounting plate 40 for discharging the mist that has dropped from the outer periphery of the filter 100 and leaked onto the filter mounting plate 40 to the drain portion 70. ing. The configuration for discharging mist from the filter unit 80 to the drain unit 70 is not limited to the check valve 45.

  Further, the extension unit portion 90 is provided with an extension unit portion cylindrical body 91 that forms an outer shell of the extension unit portion 90. The extension unit cylindrical body 91 has the same diameter as that of the filter cylindrical body 81 and a height dimension. This extension unit cylindrical body 91 is also provided with an arc-shaped joining surface 93 at the joining end 92 at the upper end and the lower end.

  And the joining end part 92 provided in the lower end of this extension unit part cylindrical body 91 is the joining end part 82 provided in the upper part of the said filter part cylindrical body 81, and the seal | sticker shown to FIGS. 4-6 mentioned above. Joined by structure 20. This joint can be easily connected and joined by the fastening band 32 described above.

  Moreover, since the joint surfaces 83 and 93 of the joint end portions 82 and 92 are sealed by the seal member 1 provided in the seal structure 20, the inside of the filter portion tubular body 81 and the extension unit portion tubular body 91 are sealed. It is possible to prevent leakage of oil mist and the like by sealing the inside.

  In addition, a disc-shaped lid body 95 that closes the upper surface of the extension unit portion cylindrical body 91 is provided on the upper portion of the extension unit portion cylindrical body 91. As shown in FIG. 11 (a), the lid body 95 is provided with a semicircular recess 96 that opens downward on the periphery thereof, and a packing 97 is provided on the lower surface of the recess 96. The lid body 95 is formed by tightening the fastening band 32 with the fastening lever 33 in a state where the peripheral concave portion 96 is placed on the joint end portion 92 provided at the upper end of the extension unit portion cylindrical body 91. The joining end 92 of the cylindrical part 91 is brought into close contact with the packing 97 and fixed.

  The space between the lid body 95 joined in the vertical direction and the filter mounting plate 40 is an arrangement space for the tubular filter 100. That is, the internal space between the filter unit 80 and the extension unit 90 is an arrangement space for the tubular filter 100. Further, the space between the filter mounting plate 40 and the bottom plate 75 is a portion for storing the supply space of the mist-containing gas A and the collected mist m. An air inlet 78 for sucking the mist-containing gas A is provided in the drain part 70 on the side surface of the drain part cylindrical body 71.

  In addition, as the drain part cylindrical body 71, the filter part cylindrical body 81, and the extension unit part cylindrical body 91, for example, a bent portion is formed on a metal plate of about 1 mm to give strength to the cylindrical body. By adopting the formed one, weight reduction and cost reduction can be achieved, and the mist removing device 50 can be easily assembled. Moreover, as these cylindrical bodies 71, 81, 91, it is also possible to form with plastics other than a metal plate, and the material, shape, etc. of the cylindrical bodies 71, 81, 91 are not limited. In addition, the weight of the mist removing device 50 can be reduced by reducing the weight of the gantry 60, the filter 80, the extension unit 90, and the like, and the movement according to the installation conditions can be easily performed.

  Further, when the odor component remains in the treated gas, the extension unit 90 may be deodorized as having functions such as activated carbon adsorption, ozonolysis, and ultraviolet irradiation.

  According to the mist removing apparatus 50 configured as described above, as shown in FIGS. 8 and 9, when the blower 62 is driven, the gas a in the filter unit 80 is sucked from the exhaust port 85 through the exhaust pipe 64. Since the inside of the filter unit 80 has a negative pressure, the mist-containing gas A is sucked into the drain unit 70 from the intake port 78 through the tubular filter 100.

  When the mist-containing gas A sucked into the drain part 70 is sucked into the wide space of the drain part 70 from the intake port 78, the flow rate is reduced, and then the tubular filter is passed through the opening hole 42 of the filter mounting plate 40. 100 hollow parts are supplied from below. The mist-containing gas A supplied from the lower side to the upper side of the tubular filter 100 passes through a wide filter surface of the plurality of tubular filters 100 at a slow flow rate, and the mist is collected by the tubular filter 100 when passing. The mist collected by the tubular filter 100 travels along the tubular filter 100 due to gravity and hangs down from the opening hole 42 to the drain portion 70 and is stored. Then, the gas a that has flowed from the periphery of the tubular filter 100 to the filter unit 80 and the extension unit unit 90 is discharged from the exhaust port 85 to the muffler duct 65 through the exhaust pipe 64.

  As described above, the mist m collected at the lower part of the tubular filter 100 is discharged downward from the lower part of the tubular filter 100 even when the mist-containing gas A having a high mist concentration is discharged by the tubular filter 100 arranged vertically. The mist-containing gas A having a low mist concentration passes through the upper portion of the mist, and the mist in the mist-containing gas A can be efficiently collected by the tubular filter 100.

  Also, the mist m that has oozed out from the lower part of the tubular filter 100 to the upper part of the filter mounting plate 40 opens the check valve 45 (FIG. 8) provided at the center of the filter mounting plate 40 into the drain part 70. Can be discharged.

  When the seal member 1 is used between the filter part tubular body 81 without the filter mounting plate 40 and the extension unit part tubular body 91, as shown in FIG. What is necessary is to insert an O-ring 9 or the like having the same thickness as the filter mounting plate 40 into the portion 8 so as to suppress excessive deformation of the seal member 1.

  On the other hand, as shown in FIGS. 8 and 9, if the extension unit cylindrical body 91 is used, the extension unit cylindrical body 91 is mounted on the upper part of the filter portion cylindrical body 81, and these joint portions are fastened with a fastening band. Since the height at which the tubular filter 100 is disposed can be easily increased by connecting with 32 (not shown), the tubular filter 100 disposed on the filter mounting plate 40 is made a long tubular filter 100, so that the filter area is increased. Can be easily increased.

  That is, in this example, the example in which the one-stage extension unit 90 is provided on the upper part of the filter unit 80 is shown. However, the extension unit cylindrical body 91 may be connected in a plurality of stages. Any number of extension unit cylindrical bodies 91 may be arranged vertically above the filter unit 80 according to the required area and the like. At this time, according to the seal structure 20 provided in the mist removing device 50, the extension unit cylindrical body 91 can be easily connected, and the operation of changing the arrangement section of the tubular filter 100 can be easily performed. The filter area can be easily changed.

  Therefore, according to the mist removing apparatus 50, it is possible to easily adjust the filter area according to the change of the place of use or the processing amount of the mist-containing gas A, and the oil mist or the like is sealed to various use conditions. It is possible to provide a mist removing device that can easily cope with the problem.

  In the above embodiment, the example in which the joining end portion 22 is formed in an arc shape has been described. However, the joining end portion 22 has an inner peripheral portion and an outer peripheral portion formed in an arc shape, and an intermediate portion formed in a linear shape. The shape of the joining end portion 22 is not limited to the above embodiment.

  Moreover, although the example which provided the long tubular filter 100 extended to the extension unit part cylindrical body 91 was shown in the said embodiment, it is made to use the tubular filter 100 which can change length by the joint mechanism which is not shown in figure. May be.

  Furthermore, the said embodiment has shown an example, The various change in the range which does not impair the summary of this invention is possible, and this invention is not limited to the said embodiment.

  The seal member according to the present invention can be used for sealing a joining end portion that joins structures having a cylindrical cross section facing each other in the axial direction in a mist removing device or the like.

1 Seal member
2 Seal surface
3 Seal body
5 Inner convex part
6 Perimeter convex
7 Inner peripheral extension
8 Slit
9 O-ring 20 Seal structure 21 Tubular body (structure)
22 Joining end 23 Joining surface 24 Arc part 30 Fixing member 31 Tightening slope 32 Tightening band 33 Tightening lever 39 Tightening band 40 Filter mounting plate 41 Mounting part 42 Opening hole 43 Hook 45 Check valve 50 Mist removing device 60 Stand 62 Blower (suction machine)
63 drive motor 64 exhaust pipe 65 silencer duct 70 drain part 71 drain part cylindrical body 72 joint end part 73 joint surface 75 bottom plate 76 concave receiving part 77 packing 78 air inlet 80 filter part 81 filter part cylindrical body 82 joint end part 83 Joining surface 85 Exhaust port 90 Extension unit part 91 Extension unit part cylindrical body 92 Joining end part 93 Joining surface 95 Cover body 96 Recessed part 97 Packing 100 Tubular filter
A Mist-containing gas
a Gas
m Mist
O Arc center

Claims (10)

A ring-shaped seal member at a joining end portion for joining a cylindrical cross-section structure facing the axial direction,
A seal main body portion having a predetermined thickness that forms a seal surface so as to be in close contact with the joint surface formed at the joint end of the structure;
An inner peripheral convex portion that is formed on the inner peripheral portion of the seal main body and wraps around the inner peripheral portion of the joint surface;
An outer peripheral convex portion that is formed on the outer peripheral portion of the seal main body portion and goes around the outer peripheral portion of the joint surface;
The sealing member characterized by having.   2. The seal member according to claim 1, wherein the seal surface is formed in an arc shape in close contact with an arcuate portion of an inner periphery and an outer periphery of a joint surface formed at a joint end portion of the structure.   The seal member according to claim 2, wherein the inner circumferential convex portion has an inner circumferential extending portion that extends to an inner circumference of a joint surface that is opposed and joined to a height near the arc center of the seal surface. .   The seal member according to any one of claims 1 to 3, wherein the seal main body portion has a slit portion extending in a radial direction from an inner peripheral portion to a predetermined position on the outer peripheral portion. A seal structure comprising the seal member according to any one of claims 1 to 4,
The sealing member;
A bonding surface formed at a bonding end of the structure so as to be in close contact with an opposing sealing surface of the sealing member;
A sealing structure, comprising: a fixing member having a tightening slope that tightens the joint end portions toward the seal surface in a state where the joint surface is in close contact with the seal surface.   The fixing member tightens the joint end portion from the outer peripheral side in the axial direction of the seal member in a state where the joint surface is in close contact with the seal surface, so that the tightening inclined surface seals the joint end portion to the seal end. The seal structure according to claim 5, wherein the seal structure is configured by a tightening band that opposes a force pressing toward a member.   The tightening band is configured such that a force acting point of a tightening slope for tightening the joining end portion in the axial direction is located on an inner peripheral side with respect to an outer peripheral end portion of a plate member inserted into the slit portion. The seal structure according to claim 6. A mist removing apparatus comprising the seal structure according to any one of claims 5 to 7,
While supplying the mist-containing gas, the drain part for discharging the collected mist,
A filter part that is positioned above the drain part and in which a tubular filter is disposed vertically;
A cylindrical body surrounding the filter portion;
A lid for closing the upper end of the cylindrical body;
A feeder for supplying a mist-containing gas to the hollow portion of the tubular filter,
The cylindrical body has a joining end at an end in the vertical direction,
A mist removing apparatus comprising the sealing structure at a joining end part for joining the cylindrical body in the axial direction. The filter portion has a filter mounting plate for attaching the tubular filter at a lower end,
The mist removal according to claim 8, wherein the filter mounting plate is fixed to the seal member by tightening the joining end portion with the fixing member in a state where the filter mounting plate is inserted into the slit portion of the seal member. apparatus. An extension unit having a cylindrical body having the same diameter as the cylindrical body;
The mist removing apparatus according to claim 9, wherein the sealing structure is provided at a joining end portion of the cylindrical body.

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