WO1993023146A1 - Filter system for compressed air - Google Patents
Filter system for compressed air Download PDFInfo
- Publication number
- WO1993023146A1 WO1993023146A1 PCT/JP1993/000664 JP9300664W WO9323146A1 WO 1993023146 A1 WO1993023146 A1 WO 1993023146A1 JP 9300664 W JP9300664 W JP 9300664W WO 9323146 A1 WO9323146 A1 WO 9323146A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compressed air
- filter
- fine particles
- filter means
- liquid
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/003—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid
- B01D46/0031—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid with collecting, draining means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/17—Compressed air water removal
Definitions
- the present invention relates to a filter device for compressed air, and more particularly to a filter device for compressed air capable of better separating and removing liquid fine particles and solid fine particles such as water and oil contained in compressed air from the compressed air. It is about structure. Background art
- pipes for supplying compressed air to various pneumatic devices used in various factories, medical fields, nuclear power plants, and the like are usually provided with a protective or pneumatic device.
- a compressed air filter device is provided, and the filter device removes moisture, oil, solids, and the like contained in the compressed air.
- Japanese Patent Publication No. Sho 62-17663 discloses a type of such a filter device for compressed air, which has two types of filter devices and has a structure as shown in FIG. Have been.
- 10 is a first filter means having a predetermined first filling 20 in the cylinder 1-8
- 1 2 is a predetermined second filling 2 2 in the cylinder 18.
- This is a second filter means having:
- the first and second filter means 10 and ⁇ 2 are vertically arranged on a closed, predetermined volume of the capture chamber 16 and communicate with the capture chamber 16 respectively. It has been impatient.
- Reference numeral 14 denotes a manifold having a compressed air introduction passage 24 and a delivery passage 26.
- the passage 24 is communicated with the first filter means 10 and the delivery path 26 is communicated with the second filter means 12, so that the first and second filter means 10, 1 2 Attached to.
- reference numeral 28 denotes a drain device, from which the liquid collected in the trapping chamber 16 is discharged to the outside.
- the first filter means 1 Q includes a mesh made of metal moth fiber such as stainless steel as the first filling 20, and the second filling means 12 includes the second filling 2 2
- a mesh-like structure made of cotton or the like is generally housed in the form of a rolled molded body. Accordingly, first, the compressed air is passed through the first filter means 10 to condense or coalesce the vapor or liquid fine particles present in the compressed air, and is separated from the compressed air while being further compressed. By passing the air through the second filter means 12, liquid particles and solid particles remaining in the compressed air are adsorbed and vaporized, so that the vapor or liquid fine particles and the solid particles in the compressed air are absorbed. The aim is to reduce the shape of the particles as much as possible.
- the metal woven filler used as the first filler 20 of the first filter means 10 it is difficult to wind the metal woven filler used as the first filler 20 of the first filter means 10 without gaps.
- the winding state tends to be different depending on the operator.
- a gap may be formed between the filling and the inner surface of the cylindrical wall that contains the filling, and compressed air may pass through such a gap, and may further form a gap in the filling.
- the first filter means 10 removes liquid fine particles in the compressed air by passing through a gap existing in the air. There was a problem in that the casting effect was reduced, and the filter performance was likely to vary.
- an object of the present invention is to provide a compressed air filter provided with first filter means and second filter means. It is an object of the present invention to eliminate the dispersion of the fill performance of the first fill means in the evening device, to advantageously reduce the time for replacing the filter, and to advantageously reduce the cost.
- FIG. 1 is an explanatory longitudinal sectional view showing one example of a compressed air filter device according to the present invention.
- FIG. 2 is an explanatory diagram showing an enlarged view of a first filling means of the filling device of FIG.
- FIG. 3 is a plan view showing a deflector of the first filter means.
- FIG. 4 is a front view of the deflector of FIG.
- FIG. 5 is a bottom view of the deflector of FIG.
- FIG. 6 is an explanatory longitudinal sectional view showing an example of a conventional compressed air filter device.
- FIG. 1 shows a specific example of a compressed air filter device having a structure according to the present invention. That is, the filter device includes a lower housing 38 in which the first filter device 32, the second filter device 34, and the drain device 36 are housed, the mist filter device 40, and the air collecting cylinder 4. 2 having an upper housing 44 in which compressed air is introduced, and a compressed air introduction passage 46 and a delivery passage 48 arranged between the lower housing 38 and the upper housing 44.
- the partition member 50 is constituted.
- the partition member 50 having a substantially thick disk shape has an opening on the outer surface of a projection 51 a protruding radially outward and a bottom surface of the partition member 50.
- a compressed air introduction passage 46 communicating with a lower opening 52 opening at the center is provided.
- the partition 51 is provided with a compressed air delivery passage 48 communicating with an upper opening 54 opened at the center of the upper surface of the partition member 50.
- a plurality of intermediate passages 56 penetrating vertically in the thickness direction are provided, and serve as communication passages for compressed air from the lower housing 38 side to the upper housing 44 side as described later.
- a drain receiving portion 58 having an upper opening portion 54 communicating with the delivery passage 48 is provided at a central portion thereof, and the drain receiving portion 5 8 on the outer peripheral surface of the partition member 50 at a position deviated by a predetermined angle with respect to the openings of the compressed air introduction passage 46 and the delivery passage 48. It is provided so as to open.
- the lower part of the partition member 50 having such a configuration is screwed in such a manner that the opening of the lower housing 38 is brought into contact with the lower part of the bottomed cylindrical member 38 so that the partition member 50 and the partition member 50 are screwed together.
- the lower housing 38 is integrally and airtightly assembled, and a closed space is formed in the lower housing 38.
- a first filter means 32 is disposed in the upper central portion of the closed space, and is located outside the first filter means 32. In this way, a second fill means 34 is arranged.
- the first filter means 32 has a structure in which a synthetic resin air deflector 68 is attached to a synthetic resin cylindrical body 62, and the first filter means 32 is larger than the cylindrical body 62. It is short and is press-fitted and fixed in a metal mounting cylinder 66 having an inner diameter substantially equal to the outer diameter of the cylindrical body 62.
- the first filter means 32 is fixed to the partition member 50 by screwing the upper end of the mounting cylinder 66 to the end of the lower opening 52 of the partition member 50. ing.
- a nut 76 is screwed to the lower end of the mounting cylinder 66.
- the lower end of the cylindrical body 62 is supported by an inner flange formed at the axial center of the inner peripheral surface of the nut 76.
- the deflector 68 has four spiral blades 72 formed around a shaft 70, as shown in FIGS.
- the blade 72 is formed such that the upper end portion 74 and the lower end portion 75 are located at positions that are mutually twisted by about 130 °.
- the deflector 68 is attached to the cylindrical body 62 by being locked to a stepped portion 64 formed substantially at the center of the inner peripheral surface of the cylindrical body 62 in the axial direction. It is arranged so that its axial direction coincides with the direction of air flow. '
- the compressed air guided from the introduction passage 46 of the partition member 50 is caused to pass through the first filter means 32, and is caused to hit the blade 72 of the deflector 68 to be turned.
- the liquid fine particles and the solid fine particles present in the compressed air can be effectively transferred to the outside in the radial direction and separated.
- the separated liquid fine particles and solid fine particles fall along the hole 78 of the nut 76 screwed to the lower end of the mounting cylinder 66, and fall on the wall of the nut 76.
- a drain device 36 As the drain device 36, a drain device having a structure disclosed in Japanese Utility Model Application Laid-Open No. 63-63478 is preferably employed, but is not limited thereto. Instead, any of various other known drain devices can be employed.
- a first filter means 32 unlike a conventional filter filled with a metal fiber filler such as stainless steel, the filling of the filler is not required. Problems such as variations in filter performance due to poor filling do not occur, and stable filter performance can be obtained. In addition, since there is no problem of clogging of the filling material, it is not necessary to periodically replace the first filling device 32 with this filling device. Furthermore, since the first filter means 32 can be easily manufactured using an inexpensive resin material or the like, the cost is very low.
- the second filling means 34 includes an inner cylinder 86 having an inner diameter larger by a predetermined dimension than the outer diameter of the mounting cylinder 66 of the first filling means 32, and the inner cylinder 86.
- An outer cylinder 88 having a predetermined size and a larger diameter than that of the outer cylinder and having substantially the same length is concentrically arranged, and a net-like wound body made of cotton fabric is filled as a filling 90 between them. It has the structure which was done.
- the upper end 34 is arranged at the upper end so as to contact the lower stepped portion 82 of the intermediate passage 56 of the partition member 50, while the lower end has a plurality of through holes at predetermined intervals in the circumferential direction. It is fixed to the partition member 50 by being supported by the nut 76 via the formed annular support member 84. With such an arrangement, the first filter means 32 protrudes downward at a predetermined length from the second filter means 34, and the first filter means The compressed air from which liquid fine particles and solid fine particles have passed through 32 is separated and guided to the second filter means 34 so that the remaining liquid fine particles and solid fine particles are adsorbed and vaporized. It is.
- a cylindrical upper housing having a bottom is provided on the upper side of the partition member 50.
- a cylindrical mist filter 40 with the upper end and the lower end supported by a support plate 92 is provided with the first and second filter means 32.34.
- the partition member 50 is mounted in a liquid-tight manner on an outer portion of a drain receiving portion 58 provided at the center of the upper surface of the partition member 50.
- the sealed space inside the upper housing 44 is partitioned into the outside and the inside of the mist filter 40, and the space outside the mist filter 40 is divided into the intermediate passage 5 of the partition member 50. Through 6, it communicates with the closed space in the lower housing 38 below the partition member 50.
- the mist filter 40 may be any known mist filter as long as the cylinder wall is a cylindrical body having a porous ventilation wall, and for example, has a fine continuous ventilation hole. It is made of soft or hard urethane foam, sintered resin, glass fiber, etc. Then, when the compressed air passes from the outside to the inside through the ventilation wall having such a configuration, the vapor or liquid particles and solid particles remaining in the compressed air are attached and collected, and are removed from the compressed air. Or it can be lost.
- a screen 94 (a mesh is not shown) of a filter made of a metal mesh is provided on the inner and outer peripheral surfaces of the mist filter 40. A configuration without such a screen may be used.
- an air collecting cylinder 42 exhibiting a thin cylindrical shape with a predetermined length is provided at the center of the drain receiving portion 58 of the partition portion 50 ". Liquid-tightly fixed and erected in the upper opening 54, which allows the liquid particles trapped on the wall of the mist filter 40 to enter the delivery passage 48. It can be effectively prevented.
- the filter device having such a structure, first, the compressed air is guided from the compressed air introduction passage 46 of the partition member 50 into the first filter means 32 and turned. And centrifugation at that time By the action, liquid and solid fine particles of water and oil contained in the compressed air are effectively separated from the compressed air. Then, the separated liquid fine particles and solid fine particles are carried to the lower portion in the lower housing 38 and discharged from the drain device 36 to the outside.
- the compressed air from which the liquid fine particles and the solid fine particles are separated as described above is guided into the second filter means 34. Therefore, the liquid fine particles remaining in the compressed air are vaporized by the action of the airflow caused by being absorbed by the filling 90 or passing through the filling 90, and the remaining solid form. The fine particles will be collected when passing through the filling 90. Thereafter, the compressed air is further guided into the upper housing 44 through the intermediate passage 56 of the partition member 50, and passes through the cylindrical wall of the mist filter 40 from the outside to the inside, whereby The liquid particles and solid particles remaining in the air are trapped by the mist filter 40.
- the liquid fine particles captured by the mist filter 40 gradually fall inside the mist filter 40, stay at the lower part, and are pushed out inside the mist filter 40, thereby partitioning. It is collected in a drain receiving portion 58 provided on the upper surface of the member 50. Then, the liquid material is appropriately discharged to the outside through a drain flow passage 60 opened at the bottom of the drain receiving portion 58, but due to the presence of the air collecting cylinder 42, the delivery passage 48 It is well prevented from invading the sea.
- the mist filter 40 and the air collecting cylinder 42 are not essential components in the present invention, but by providing them, liquid particles in compressed air can be more effectively separated. It can be separated and removed.
- the compressed air is sequentially passed through the first filter means 32, the second filter means 34, and the mist filter 40.
- liquid fine particles and solid fine particles are effectively removed or eliminated from the compressed air, they exhibit a characteristic that there is no variation in fill performance in the first filter means 32 in particular, and exhibit stable liquid state. The effect of separating and removing the fine particles can be obtained.
- the time required for changing the filter is greatly reduced and the cost can be advantageously reduced as compared with the related art.
- a compressed air filter device using a deflector 68 for air swirling as the first filter means 32, and a conventional stainless steel fiber as the first filter means in the same filter device Prepare a filter device using a filter filled with rolls made of stainless steel as the filling material.
- the present invention is applied to a compressed air filter device having a configuration in which the first filter means and the second filter means are arranged concentrically.
- the present invention can be applied to compressed air filters having various other configurations.
- the first filter shown in FIG. It is needless to say that the present invention can also be applied to a filter device having a configuration in which the means and the second filter means are arranged in parallel.
- the compressed air filling device by passing the compressed air through the first and second filling means, the liquid fine particles in the compressed air, It removes or eliminates solid fine particles, but by using a deflector with spiral blades formed around the axis as the first filter means, the compressed air is swirled, and the liquid is centrifuged. It separates fine particles and solid fine particles. Therefore, unlike conventional filters in which a metal fiber wound material is filled as a filling in a conventional cylinder, there is no variation in filter performance, and liquid fine particles and solid fine particles are separated and removed stably from compressed air. It can be done.
- the first filter means since there is no problem of clogging, regular filter replacement is not required, and the labor for filter replacement can be greatly reduced. Furthermore, since such a deflector can be provided as an inexpensive resin molded product, there is an advantage that the cost can be advantageously reduced.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Compressor (AREA)
- Separating Particles In Gases By Inertia (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69313791T DE69313791T2 (de) | 1992-05-20 | 1993-05-20 | Filtersystem für druckluft |
US08/090,179 US5385592A (en) | 1992-05-20 | 1993-05-20 | Filter device for compressed air |
EP93910364A EP0601196B1 (en) | 1992-05-20 | 1993-05-20 | Filter system for compressed air |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15269292A JP3288070B2 (ja) | 1992-05-20 | 1992-05-20 | 圧縮空気用フィルタ装置 |
JP4/152692 | 1992-05-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993023146A1 true WO1993023146A1 (en) | 1993-11-25 |
Family
ID=15546054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/000664 WO1993023146A1 (en) | 1992-05-20 | 1993-05-20 | Filter system for compressed air |
Country Status (6)
Country | Link |
---|---|
US (1) | US5385592A (ja) |
EP (1) | EP0601196B1 (ja) |
JP (1) | JP3288070B2 (ja) |
CN (1) | CN1032349C (ja) |
DE (1) | DE69313791T2 (ja) |
WO (1) | WO1993023146A1 (ja) |
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JPH0717269B2 (ja) * | 1986-12-23 | 1995-03-01 | 凸版印刷株式会社 | 筒状物品の受け渡し装置 |
US4897094A (en) * | 1988-04-05 | 1990-01-30 | Maeda Shell Service Co., Ltd. and J&M Co., Ltd. | In-line filter assembly for compressed air |
US4925466A (en) * | 1988-11-23 | 1990-05-15 | La-Man Corporation | Filter cartridge assembly |
JPH0515932Y2 (ja) * | 1988-11-24 | 1993-04-27 | ||
US4889544A (en) * | 1989-01-09 | 1989-12-26 | Hsu Chia Tsong | Cooler-dehumidifier-filter 3-in-one apparatus for treating compressed air |
US5002593A (en) * | 1989-02-22 | 1991-03-26 | Nippon Air Brake Co., Ltd. | Compressed-air dryer |
US4964898A (en) * | 1989-04-03 | 1990-10-23 | Vividstar International Inc. | Dryer separater |
JP2543671Y2 (ja) * | 1991-03-13 | 1997-08-13 | 株式会社前田シェルサービス | 圧縮空気用フィルタ装置 |
-
1992
- 1992-05-20 JP JP15269292A patent/JP3288070B2/ja not_active Expired - Lifetime
-
1993
- 1993-01-07 CN CN93100387A patent/CN1032349C/zh not_active Expired - Lifetime
- 1993-05-20 US US08/090,179 patent/US5385592A/en not_active Expired - Lifetime
- 1993-05-20 EP EP93910364A patent/EP0601196B1/en not_active Expired - Lifetime
- 1993-05-20 WO PCT/JP1993/000664 patent/WO1993023146A1/ja active IP Right Grant
- 1993-05-20 DE DE69313791T patent/DE69313791T2/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS63107719U (ja) * | 1986-12-27 | 1988-07-12 | ||
JPS63160921U (ja) * | 1987-04-06 | 1988-10-20 | ||
JPS63160922U (ja) * | 1987-04-09 | 1988-10-20 |
Non-Patent Citations (1)
Title |
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See also references of EP0601196A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114288791A (zh) * | 2021-12-08 | 2022-04-08 | 合肥江航飞机装备股份有限公司 | 一种机载氧气浓缩器用气源处理装置 |
CN114288791B (zh) * | 2021-12-08 | 2023-06-16 | 合肥江航飞机装备股份有限公司 | 一种机载氧气浓缩器用气源处理装置 |
Also Published As
Publication number | Publication date |
---|---|
JP3288070B2 (ja) | 2002-06-04 |
EP0601196A4 (en) | 1994-08-17 |
EP0601196A1 (en) | 1994-06-15 |
US5385592A (en) | 1995-01-31 |
CN1078919A (zh) | 1993-12-01 |
CN1032349C (zh) | 1996-07-24 |
DE69313791D1 (de) | 1997-10-16 |
EP0601196B1 (en) | 1997-09-10 |
DE69313791T2 (de) | 1998-05-20 |
JPH05317630A (ja) | 1993-12-03 |
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