JP6226532B2 - Cyclone mist collector - Google Patents

Description

  The present invention relates to a cyclone mist collector.

  Conventionally, a cyclone mist collector as shown in Patent Document 1 has been used as a device for collecting mist from gas containing mist using centrifugal force. In the cyclone type mist collector, a gas supply pipe for supplying a gas containing mist is horizontally attached to an upper portion of a cylindrical main body whose upper end surface is closed. In addition, a collector for collecting mist separated from gas is attached to the lower end of the main body, and a gas exhaust pipe for exhausting gas from the main body through the upper end surface of the main body is attached coaxially with the main body. ing. The cyclone type mist collector is supplied with gas containing mist so as to swirl around the gas discharge pipe. Until it is discharged, the mist is separated to the outside by centrifugal force and dropped and collected in the collecting part.

  Furthermore, in the cyclone type mist collector shown in Patent Document 1, a collecting material for collecting mist is attached to the inner wall surface of the gas discharge pipe, and from the gas until it flows into the gas discharge pipe. The mist that was not separated can be collected.

JP-A-9-177529

  However, as shown in FIG. 7, in the cyclone type mist collector 100 as shown in Patent Document 1, the gas flow 130 that moves up the gas discharge pipe 114 is not arranged, so that the center of the gas discharge pipe 114 is The inclination angle θ1 of the spiral of the gas flow 130 with respect to the plane m11 orthogonal to the axis c11 was large. Therefore, the time for the gas to contact the collecting material 121 is shortened, and there is a problem that the collecting material 121 cannot sufficiently collect the mist.

  The present invention has been made to solve the above-described problems, and provides a cyclone mist collector capable of improving the mist collection efficiency.

  A cyclonic mist collector according to the present invention includes a cylindrical main body, a gas supply pipe that supplies gas containing mist to the main body, and a trap that is attached to the lower end of the main body and collects mist separated from the gas. A collecting portion and a cylindrical gas discharge pipe extending vertically in the main body so as to penetrate the upper end surface of the main body, and the gas from the main body rises while spirally turning in the gas discharge pipe The gas discharge pipe is attached to a mist collecting means for collecting mist contained in the gas rising inside, and an upper part of the mist collecting means. A rectifying plate that regulates the flow of gas in the exhaust pipe, and the rectifying plate has a small inclination angle θ of the spiral of the gas flow with respect to a plane m1 orthogonal to the central axis c1 of the gas exhaust pipe. Adjust the flow of gas.

  In the present invention, a rectifying plate is provided on the upper part of the mist collecting means, and the spiral flow angle of the gas flowing in the gas discharge pipe is changed with respect to the plane m1 perpendicular to the central axis c1 of the gas discharge pipe. The flow is rectified so as to be smaller (see the gas flow 30 in FIG. 5). Thereby, since the time for which the gas is in contact with the mist collecting means can be lengthened, the mist can be sufficiently collected from the gas by the mist collecting means, and the mist collecting efficiency can be improved.

  In the cyclone mist collector, the mist collecting means may be configured to collect mist on the inner wall surface of the gas discharge pipe. Since the specific gravity is larger than that of the gas, the mist is concentrated on the outer peripheral portion of the spiral swirl flow. Therefore, even if a mist collecting means is provided on the inner wall surface of the gas discharge pipe, sufficient mist collecting efficiency can be obtained. On the other hand, by collecting the mist on the inner wall surface of the gas discharge pipe, there are fewer things that obstruct the flow of gas discharged from the gas discharge pipe. For this reason, gas can be smoothly discharged | emitted through a gas exhaust pipe, and the pressure loss at the time of gas passing a mist collection means can be reduced.

  Further, in the cyclone type mist collector, the mist collecting means may comprise a mist discharge pipe having one end communicating with the gas discharge pipe below the rectifying plate and the other end communicating with the collection part or the lower part of the main body. it can. In the cyclone type mist collector, the pressure inside the collector or the lower part of the main body is usually smaller than the pressure inside the gas discharge pipe. Therefore, simply connecting the mist discharge pipe from the gas discharge pipe to the collecting part or the lower part of the main body generates a suction force for sucking the mist into the mist discharge pipe, and the mist is automatically sucked into the mist discharge pipe. The The mist sucked into the mist discharge pipe is automatically moved to the lower part of the collection section or the main body due to a pressure difference between the collection section or the lower section of the main body and the gas discharge pipe, so that the mist accumulates in the mist discharge pipe. There is nothing. Therefore, by using the mist discharge pipe as the mist collecting means, maintenance such as replacement of the mist collecting means becomes unnecessary, and the mist can be collected efficiently while the cyclone type mist collector is in operation. Further, when a gas containing dust such as cutting powder and polishing powder is supplied into the main body of the cyclone type mist collector together with the mist, if the collecting material 121 as in Patent Document 1 is used as the mist collecting means, However, since the trapping capacity of the trapping material 121 is reduced, the trapping material 121 must be frequently replaced. However, by using the mist discharge pipe as the mist collection means, the dust can be sucked into the mist discharge pipe and can move to the collection section through the mist discharge pipe having a diameter larger than that of the dust. For this reason, the mist discharge pipe is not clogged and the collecting ability is not lowered, and the dust can be continuously collected during the operation of the cyclone type mist collector.

  In the cyclone type mist collector, the gas supply pipe may be arranged in a tangential direction of the gas discharge pipe so that the gas swirls around the gas discharge pipe. As a result, the gas flows spirally only by supplying the gas containing mist from the gas supply pipe to the main body, so there is no need to provide a guide vane or the like for spiraling the gas in the main body. .

  In the cyclone type mist collector, the gas discharge pipe includes a central axis c1 of the gas discharge pipe, and an outer side opposite to the gas supply pipe with a plane m2 orthogonal to the central axis c2 of the gas supply pipe as a boundary. A dustproof plate is provided on at least a part of the wall surface, and a lower end portion of the dustproof plate can protrude downward from a lower end portion of the gas discharge pipe. The gas supplied from the gas supply pipe may contain dust together with mist. The gas containing mist and dust is spirally swirled and descends to separate the mist and dust. In particular, the separated dust hits the inner wall surface of the main body and rebounds to be discharged from the gas discharge pipe. It may be discharged as it is on the updraft. However, by providing a dustproof plate so as to protrude downward from the lower end of the gas discharge pipe at a position opposite to the gas supply pipe as in the present invention, the dust that bounces off the inner wall surface of the main body directly from the gas discharge pipe. It can prevent being discharged. Thereby, since dust falls and is collected by the collection part, the collection efficiency of dust can be improved.

  In the cyclone type mist collector, the gas supplied from the gas supply pipe to the main body swirls around the gas discharge pipe in one direction between the gas supply pipe and the outer wall surface of the gas discharge pipe. A restriction plate can be deployed. By providing the regulating plate in this way, the flow of the gas flowing into the main body from the gas supply pipe is adjusted so as to turn in one direction, and the inside of the main body is lowered while smoothly turning spirally. In addition, by adjusting the gas flow, the gas does not collide and the gas flow is not disturbed. Thereby, the gas flows smoothly in the main body, and the pressure loss of the gas can be reduced.

  Further, in the cyclone mist collector, the rectifying plate can have a ring shape. As a result, the rectifying plate only needs to be provided with a ring that can be fitted into the gas discharge pipe, and the rectifying plate can be easily attached.

  According to the cyclone type mist collector according to the present invention, the efficiency of collecting mist can be improved.

It is a partial section front view showing one embodiment of the cyclone type mist collector of the present invention. It is a top view of the cyclone type mist collector of FIG. It is the A section enlarged view of the cyclone type mist collector of FIG. It is BB sectional drawing of the cyclone type mist collector of FIG. It is a partial cross section front view of the gas exhaust pipe part of the cyclone type mist collector of FIG. It is a top view which shows the area | region which moves the position of the gas exhaust pipe of the cyclone type mist collector of FIG. It is a fragmentary sectional front view of the gas exhaust pipe part of the conventional cyclone type mist collector.

  Hereinafter, an embodiment of a cyclonic mist collector according to the present invention will be described with reference to the accompanying drawings. In the following, the vertical and horizontal directions are defined in the direction shown in FIG. In this specification, the cyclone type mist collector is described as being supplied with a gas containing mist, but in addition to the mist, a gas containing dust such as cutting powder or abrasive powder is also included. In this case, the dust is separated in the same manner as the mist.

  As shown in FIGS. 1 and 2, the cyclone mist collector 1 includes a main body 11, a gas supply pipe 12 that supplies a gas containing mist to the main body 11, and a collection unit that collects mist separated from the gas. 13 and a gas discharge pipe 14 for discharging gas from the main body.

  The main body 11 is formed in a cylindrical shape, the upper part has a straight pipe shape having a constant diameter, and the lower middle part has a tapered shape whose diameter decreases toward the lower end. Furthermore, the lower part 11b of the main body 11 therebelow has a straight pipe shape having a diameter reduced by the taper shape of the middle part. The upper end of the main body 11 is closed, and a collecting portion 13 is attached to the opening at the lower end of the main body 11.

  A gas supply pipe 12 is attached to the upper part of the main body 11, and a gas exhaust pipe 14 is attached through the closed upper end surface. If it demonstrates concretely, the gas supply pipe | tube 12 is formed in the cross-sectional rectangular shape, and is connected with the straight pipe | tube-shaped part of the main body 11 horizontally from the tangential direction. That is, the gas supply pipe 12 is arranged in the tangential direction of the gas discharge pipe 14, and the gas supplied from the gas supply pipe 12 swirls around the gas discharge pipe 14. Further, the gas discharge pipe 14 is formed in a cylindrical shape, and is attached extending coaxially with the main body 11 in the vertical direction. The lower end of the gas discharge pipe 14 is located below the position facing the outlet opening of the gas supply pipe 12 in the main body 11 and between the straight pipe shape and the tapered shape 11a of the main body 11. It extends.

  Further, as shown in FIGS. 1 to 3, the cyclone type mist collector 1 includes a mist discharge pipe (mist collecting means) 21 that collects mist contained in gas flowing into the gas discharge pipe 14. And a rectifying plate 22 for adjusting the flow of gas flowing inside.

  One end of the mist discharge pipe 21 is connected to the opening 14 a provided in the gas discharge pipe 14 above the upper end surface of the main body 11 and below the rectifying plate 22, and the other end is connected to the collection unit 13. doing. For the mist discharge pipe 21, for example, a flexible resin tube such as a drain tube can be used. When the cyclone type mist collector 1 is used mainly for collecting oil mist, the inner surface of the mist discharge pipe 21 is preferably made of a material that does not easily adhere to oil.

  The rectifying plate 22 has a ring shape, and is formed in a circular shape whose outer shape is in contact with the inner wall surface 14 b of the gas exhaust pipe 14. The rectifying plate 22 is attached to the upper part of the opening 14a connected to the mist discharge pipe 21 so as to be orthogonal to the central axis c1 of the gas discharge pipe 14 inside the gas discharge pipe 14. The position where the current plate 22 is attached is particularly preferably in the range from directly above the upper end edge 14c of the opening 14a to a few ten mm above the upper end edge 14c (distance D in FIG. 3).

  Further, as shown in FIGS. 1 and 4, the cyclone mist collector 1 includes a dustproof plate 23 attached to the lower end portion of the gas discharge pipe 14, and a gas supply pipe 12 and an outer wall surface 14 d of the gas discharge pipe 14. A restriction plate 24 is provided between them.

  The dustproof plate 23 is formed, for example, by bending a rectangular metal plate, a resin plate, or the like. The dustproof plate 23 includes the central axis c1 of the gas exhaust pipe 14 and is a plane m2 orthogonal to the central axis c2 of the gas supply pipe 12, that is, the point 12a where the gas supply pipe 12 contacts the main body 11 and the center of the gas exhaust pipe 14. It is arranged on the outer wall surface 14d of the gas discharge pipe 14 on the side opposite to the gas supply pipe 12 with a plane m2 including the axis c1 as a boundary. Specifically, the dustproof plate 23 is provided in a range widened or narrowed by a predetermined angle α with reference to a 180 ° region a1 on the opposite side of the gas supply pipe 12 with respect to the surface m2. The predetermined angle α is preferably 30 °. And the dustproof board 23 is attached so that it may protrude below rather than the lower end part of the gas exhaust pipe 14. FIG. The lower end of the dustproof plate 23 preferably extends from the lower end of the gas discharge pipe 14 to the boundary 11a between the straight pipe shape and the taper shape of the main body 11.

  The restriction plate 24 is formed of, for example, a rectangular metal plate, a resin plate, or the like. The restriction plate 24 has a height substantially equal to the height of the inner wall of the inner side surface 12 b of the gas supply pipe 12, and when attached to the outlet end of the gas supply pipe 12, The width abuts against the wall surface 14d. In the present embodiment, one end of the regulating plate 24 is attached to the inner wall of the side surface 12b on the inner side of the gas supply pipe 12, and the other end is curved and attached along the outer wall surface 14d of the gas exhaust pipe 14. Yes. Here, the inner side surface 12 b of the gas supply pipe 12 means the lower side in FIG. 4, that is, the side opposite to the side surface where the gas supply pipe 12 and the main body 11 are in contact.

  Next, the operation of the cyclonic mist collector 1 will be described with reference to FIG. First, a gas containing mist is supplied from the gas supply pipe 12 to the main body 11. At this time, since the gas supply pipe 12 is arranged in the tangential direction of the gas discharge pipe 14, the gas including the mist supplied from the gas supply pipe 12 swirls around the gas discharge pipe 14 in a spiral shape. To do. The gas supplied into the main body 11 descends in the main body 11 while turning spirally, and then reverses and rises. Meanwhile, the mist is separated from the gas containing the mist by centrifugal force. Then, the gas rises and is discharged while spirally turning in the gas discharge pipe 14. Further, the mist separated from the gas falls and is collected by the collection unit 13 attached to the lower end of the main body 11.

  Further, in the gas discharge pipe 14, while the gas ascends while spirally rotating, the mist remaining in the gas without being separated in the main body 11 is separated by the centrifugal force. The separated mist is sucked into the mist discharge pipe 21 by the action of the rectifying plate 22 and the mist discharge pipe 21 and is collected in the collection unit 13. That is, in the cyclone type mist collector 1, since the pressure of the collection unit 13 is usually lower than that of the gas discharge pipe 14, the pressure difference between the gas discharge pipe 14 and the collection unit 13 causes the opening 14 a to open. A suction force for sucking mist into the mist discharge pipe 21 is generated. On the other hand, as shown in FIG. 5, the rectifying plate 22 causes the inclination angle θ of the spiral of the gas flow 30 flowing in the gas exhaust pipe 14 to the plane m1 perpendicular to the central axis c1 of the gas exhaust pipe 14 to It is smaller than the inclination angle θ1 of the spiral of the gas flow 130 when 22 is not provided. Therefore, the separated mist is prevented from rising without being sucked into the mist discharge pipe 21 along the inner wall surface 14b of the gas discharge pipe 14 at the periphery of the opening 14a. As a result, the separated mist is sucked into the mist discharge pipe 21 and collected by the collection unit 13 without being discharged as it is on the rising air current in the gas discharge pipe 14.

  As described above, in the present invention, the rectifying plate 22 is attached in the gas exhaust pipe 14 to rectify the gas flow 30 in the gas exhaust pipe 14, and the mist exhaust pipe 21 is attached to the lower part of the rectifying plate 22. Thus, most of the gas that rises while turning spirally passes through the opening 14a to which the mist discharge pipe 21 is attached. Since the gas flow 30 is a gentle flow having a small spiral inclination angle θ by the rectifying plate 22, the mist separated in the gas flow 30 is not repelled by the periphery of the opening 14a. It is sucked into the mist discharge pipe 21. Thereby, the mist which could not be collected in the main body 11 can be collected in the gas exhaust pipe 14, and the collection efficiency of mist can be improved.

  Further, since a dustproof plate 23 is attached to the lower end of the gas discharge pipe 14 on the opposite side of the gas supply pipe 12, the mist-containing gas supplied from the gas supply pipe 12 strikes the inner wall surface of the main body 11. It is possible to prevent the gas from being directly bounced and discharged from the gas discharge pipe 14. Therefore, the gas containing the mist supplied into the main body 11 can always descend once in the main body 11 and collect the mist during that time, so that the mist collecting efficiency can be further improved.

  Further, since the restriction plate 24 is provided at the outlet end of the gas supply pipe 12, the gas supplied from the gas supply pipe 12 to the main body is restricted so as to turn around the gas discharge pipe 14 in one direction. Thereby, it can prevent that the gas supplied into the main body 11 collides, and the flow of gas is disturbed, and can reduce the pressure loss of gas. Further, since the pressure loss of the gas is reduced, the air volume of the gas sucked by the cyclone mist collector 1 is increased, and the gas flow rate can be increased. A large centrifugal force can be obtained by spirally turning the gas at a high speed, and the separating ability of the cyclonic mist collector 1 can be improved. On the other hand, by reducing the pressure loss of the gas, it is possible to reduce the power source necessary for operating the cyclone mist collector 1 with a desired decomposition capability.

  Moreover, since the mist discharge pipe 21 attached to the opening 14a of the gas discharge pipe 14 is used as the mist collecting means 21 for collecting the mist from the gas discharge pipe 14, the flow of gas flowing in the gas discharge pipe 14 is changed. There are fewer obstacles. Therefore, since the gas can smoothly pass through the gas discharge pipe 14, it is possible to prevent an increase in gas pressure loss in the gas discharge pipe 14. On the other hand, since the mist has a specific gravity greater than that of the gas, the mist is collected in the outer peripheral portion of the spiral swirl flow of the gas, and thus is reliably collected by the mist discharge pipe 21. Further, in the mist discharge pipe 21, the mist flows to the collection section 13 due to the pressure difference between the gas discharge pipe 14 and the collection section 13, so that the mist does not stay in the mist discharge pipe 21 and is discharged. Maintenance of the pipe 21 is not required, and the mist can be continuously collected efficiently while the cyclone mist collector 1 is in operation.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this Embodiment, A various change is possible unless it deviates from the meaning. For example, in the present embodiment, the gas discharge pipe 14 is provided coaxially with the main body 11, but the position of the central axis c1 'of the gas discharge pipe 14' can be moved as shown in FIG. In FIG. 6, only the main body 11, the gas supply pipe 12, and the gas discharge pipes 14 and 14 ′ are illustrated for easy understanding of the drawing.

  More specifically, the gas exhaust pipe 14 ′ includes a central axis c1 of the gas exhaust pipe 14 when the gas exhaust pipe 14 is arranged coaxially with the main body 11, and a plane parallel to the central axis c2 of the gas supply pipe 12. The central axis c1 ′ is located in a region a2 up to 135 ° from the side where the gas supply pipe 12 is disposed on the surface m3 with the base point p on the opposite side to the gas supply pipe 12 with respect to m3. Can do. At this time, the central axis c <b> 1 ′ of the gas exhaust pipe 14 ′ is moved so that the outer wall surface 14 d ′ of the gas exhaust pipe 14 ′ does not contact the main body 11. By shifting the central axis c1 of the gas discharge pipe 14 in this way, the flow of gas flowing from the gas supply pipe 12 into the main body 11 becomes smoother, and the flowing gas in the main body 11 collides with each other to cause the flow of gas. There is no disturbance, and the pressure loss of the gas flowing in the main body 11 can be further reduced. At this time, when the gas exhaust pipe 14 is coaxial with the main body 11, the regulation plate 24 only needs to be large enough to block between the gas supply pipe 12 and the gas exhaust pipe 14, and the gas exhaust pipe 14 is moved. In this case, it is not always necessary to close the space between the gas supply pipe 12 and the gas discharge pipe 14 ′.

  Moreover, in the said embodiment, although the mist discharge pipe 21 has connected the gas discharge pipe 14 and the collection part 13, it is not necessarily required. That is, the mist discharge pipe 21 only needs to be able to suck out mist from the gas discharge pipe 14. For example, the other end of the mist discharge pipe 21 can communicate with the lower portion 11 b of the main body 11. Further, the other end of the mist discharge pipe 21 may be connected to a separately provided suction device or the like without communicating with a part of the main body 11, and the mist can be sucked from the gas discharge pipe 14 by the suction device. Furthermore, the mist collecting means 21 does not necessarily have a tube shape like the mist discharge pipe 21. For example, the mist collection means 21 is attached to the inner wall surface 14b of the gas discharge pipe and can absorb the mist. It can also be used as a collecting material. Moreover, when the pressure loss of the gas in the gas exhaust pipe 14 does not become a problem, the gas exhaust pipe 14 can be packed with a collecting material.

  Moreover, in the said embodiment, although the baffle plate 22 is exhibiting ring shape, a some circular-arc-shaped board | plate material can also be arrange | positioned along the circumferential direction of the gas exhaust pipe 14, for example. At this time, it is only necessary that the arc-shaped plate material is provided so that the circumferential interval between the arc-shaped plate members is not too small and the spiral inclination angle θ of the gas flow 30 is reduced. Also, when the rectifying plate 22 has a ring shape, the shape of the hole in the ring is not limited to a circular hole similar to the outer shape, and may be an arbitrary shape.

  Moreover, in the said embodiment, although the gas supply pipe 12 is formed in the cross-sectional rectangular shape, it does not necessarily need to be formed in a cross-sectional rectangular shape, and circular shape may be sufficient as it. In this case, the restricting plate 24 is formed in a size that covers about one-fourth of the circumference, and may be provided at a position corresponding to the inner side surface 12b.

  Further, in the above embodiment, the regulation plate 24 is attached to the outlet end of the gas supply pipe 12, but it is not necessarily required to be attached to the outlet end of the gas supply pipe 12. The restriction plate 24 covers the space between the gas supply pipe 12 and the outer wall surface 14d of the gas discharge pipe 14, and the gas supplied from the gas supply pipe 12 to the main body 11 swirls around the gas discharge pipe 14 in one direction. As long as it can be regulated like this. That is, for example, it may be attached to the gas discharge pipe 14 or may be directly attached to the main body 11.

  In the above embodiment, the dustproof plate 23 is formed by curving a plate material and is attached to the lower end portion of the gas exhaust pipe 14, but can be formed integrally with the gas exhaust pipe 14, for example. As an example, when the gas discharge pipe 14 is formed, the length of the lower end of the gas discharge pipe 14 is set to a position where the dustproof plate 23 is provided (at least a part on the side opposite to the gas supply pipe 12 with respect to the surface m2). Then, the dustproof plate 23 can be formed integrally with the gas exhaust pipe 14 by shortening at a position where the dustproof plate 23 is not provided. Thus, the dust-proof plate 23 should just be provided so that the lower end part of the gas exhaust pipe 14 may be extended below in the predetermined part of the circumferential direction.

  In the above-described embodiment, the gas supply pipe 12 is provided along the tangent line of the main body 11 to cause the mist-containing gas supplied into the main body 11 to spiral, but for example, the gas supply pipe 12 May be arranged parallel to the axis of the main body 11 and a guide vane may be provided in the main body 11 to cause a spiral turn.

DESCRIPTION OF SYMBOLS 1 Cyclone-type mist collector 11 Main body 11b Lower part of main body 12 Gas supply pipe 13 Collection part 14, 14 'Gas exhaust pipe 14b Inner wall surface of gas exhaust pipe 14d Outer wall surface of gas exhaust pipe 21 Mist exhaust pipe (mist collecting means)
22 Rectification plate 23 Dustproof plate 24 Restriction plate c1, c1 ′ Center axis of gas discharge pipe c2 Center axis of gas supply pipe m1 Surface perpendicular to center axis of gas discharge pipe m2 surface θ Inclination angle

Claims (4)

A cylindrical main body, a gas supply pipe for supplying a gas containing mist to the main body, a collecting unit attached to the lower end of the main body and collecting mist separated from the gas, and an upper end surface of the main body A cyclone-type mist collector that includes a cylindrical gas discharge pipe extending vertically through the main body so as to penetrate, and is discharged when the gas from the main body rises while spirally turning in the gas discharge pipe. And
The gas exhaust pipe is
One end is connected to an opening provided in the gas discharge pipe, and the other end is connected to the lower part of the collection unit or the main body to collect mist contained in the gas rising in the gas discharge pipe. A mist discharge pipe ,
A ring-shaped outer shape having a circular shape in contact with the inner wall surface of the gas exhaust pipe, and having a rectifying plate attached above the opening of the gas exhaust pipe ;
The rectifying plate is a cyclone type mist collector that adjusts the gas flow in the gas discharge pipe so that the inclination angle θ of the spiral of the gas flow with respect to the plane m1 orthogonal to the central axis c1 of the gas discharge pipe is small. The cyclone type mist collector according to claim 1, wherein the gas supply pipe is disposed toward a tangential direction of the gas discharge pipe so that the gas swirls around the gas discharge pipe. Wherein the gas discharge pipe, wherein including the center axis c1 of the gas discharge pipe and in the boundary surface m2 orthogonal to the center axis c2 of the gas supply pipe, at least part of the outer wall surface opposite to the gas supply pipe Is provided with a dustproof plate,
The cyclone type mist collector according to claim 2 , wherein a lower end portion of the dustproof plate protrudes downward from a lower end portion of the gas discharge pipe. A restriction plate is provided between the gas supply pipe and the outer wall surface of the gas discharge pipe so that the gas supplied from the gas supply pipe to the main body swirls around the gas discharge pipe in one direction. The cyclone type mist collector according to claim 2 or 3, which is provided.

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