WO2008004319A1 - Cône de retenue et dispositif de retenue de filtre à poussière équipé de celui-ci - Google Patents
Cône de retenue et dispositif de retenue de filtre à poussière équipé de celui-ci Download PDFInfo
- Publication number
- WO2008004319A1 WO2008004319A1 PCT/JP2006/318185 JP2006318185W WO2008004319A1 WO 2008004319 A1 WO2008004319 A1 WO 2008004319A1 JP 2006318185 W JP2006318185 W JP 2006318185W WO 2008004319 A1 WO2008004319 A1 WO 2008004319A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- retainer
- cone
- main body
- filter cloth
- end side
- Prior art date
Links
- 230000008602 contraction Effects 0.000 claims description 89
- 239000002184 metal Substances 0.000 claims description 9
- 239000004744 fabric Substances 0.000 abstract description 121
- 239000000428 dust Substances 0.000 abstract description 118
- 238000011001 backwashing Methods 0.000 abstract description 46
- 239000000843 powder Substances 0.000 abstract 1
- 241000234435 Lilium Species 0.000 description 31
- 230000002093 peripheral effect Effects 0.000 description 22
- 230000000694 effects Effects 0.000 description 21
- 238000001914 filtration Methods 0.000 description 16
- 238000005259 measurement Methods 0.000 description 15
- 230000007246 mechanism Effects 0.000 description 11
- 238000003466 welding Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 230000007423 decrease Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229940081330 tena Drugs 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- 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
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- 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
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
- B01D46/0043—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding containing fixed gas displacement elements or cores
-
- 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
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/06—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material with means keeping the working surfaces flat
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
Definitions
- the present invention relates to a retainer cone disposed on a bag filter retainer for supporting a filter cloth of a dust collector on an inner side and a bag filter retainer including the cone.
- a dust collector As a dust collector, a filter cloth (filter bag) through which a dust-containing gas is passed to separate and collect dust, and a support frame (from below, which supports the filter cloth from the inside to maintain the shape of the filter cloth). And a retainer main body).
- the filter cloth collects dust and the loss of suction power increases with the passage of operation time, so it is necessary to intermittently or continuously remove the collected dust.
- a pulse jet type dust collector described in (Patent Document 1), (Patent Document 2), and the like.
- FIG. 7 (a) is a schematic cross-sectional view of the essential part showing the state of the filter cloth at the time of collecting the conventional bag filter retainer in the dust collector provided with a pulse jet type sweeping and dropping mechanism.
- FIG. 14 is a schematic cross-sectional view showing the state of the filter cloth when removing dust from a conventional bag filter retainer in a dust collector provided with a pulse jet type removal mechanism, and when removing (when backwashing).
- 50 is a conventional bag filter retainer disposed on the top of a dust collector provided with a pulse jet type removal mechanism 70
- 51 is a retainer body of the bag filter retainer 50
- 52 is a retainer body 51.
- a bench lily tube disposed at the upper end, 52a is a flange portion at the upper end of the bench tube 52, 55 is a cylindrical filter cloth disposed on the outer periphery of the retainer body 51, 60 holds the retainer 50 for bag filter
- the separator plate (cell plate) of the dust collector, 7 Oa is a nozzle of a pulse jet type removal mechanism 70 which is disposed above the bench lily pipe 52 and jets compressed air toward the bench lily pipe 52.
- the dust is removed from the outside of the filter cloth 55 and flows into the filter cloth 55, and the dust is filtered by the filter cloth 55. Collected on the outer circumference of the The separated and collected clean air flow is discharged from the bench lily pipe 52.
- the nozzle 70a of the removal mechanism 70 is disposed above the bench lily pipe 52, and as shown in FIG. 7 (b), compressed air is supplied from the nozzle 70a to the inside of the filter cloth 55 from the bench lily pipe 52 at regular intervals.
- the dust that has been jetted and adhered to the filter cloth 55 is instantaneously wiped off to the outside of the filter cloth 55.
- Patent Document 1 Japanese Patent Application Laid-Open No. 10-21410
- Patent Document 2 Japanese Patent Application Laid-Open No. 8-299732
- the pressure of the pulse jet is increased or when the bench lily pipe 52 is removed or when the bench lily pipe 52 is attached to the outside of the retainer main body 51, the negative pressure at the upper end of the filter cloth 55 is further increased.
- the filter cloth 55 is easily damaged. Therefore, the pressure of the pulse jet is usually in the range of about 196 kPa to 686 kPa. In order to prevent damage to the filter cloth 55, the pressure of the pulse jet is sometimes suppressed to 392 kPa or less. With this type of retainer, the pulse jets may not reach the lower end of the retainer body 51, and dust may not be able to be removed at the upper and lower ends.
- the present invention solves the above-mentioned conventional problems, and it is inserted into the center of the upper end portion of the retainer main body, which is a negative pressure generation region near the mounting position of the conventional bench lily tube, to backwash the filter cloth.
- the nozzle force at the upper portion of the retainer body A part of the compressed air to be injected can be dispersed in the radial direction of the retainer body to prevent negative pressure from being generated at the upper end side of the retainer body, and a filter including the upper end side of the retainer body
- the entire cloth can be expanded outward, dust and dust adhering to the filter cloth can be reliably removed and dropped, and the flow path cross-sectional area of the upper end of the retainer body can be enlarged compared to the conventional bench lily type.
- the retainer cone of the present invention and the bag filter retainer provided with the same have the following configuration.
- a cone for a retainer according to claim 1 of the present invention is a cone for a retainer which is inserted into the center of the upper end side of a retainer body of a retainer for a bag filter, and is provided at the upper end in the longitudinal direction. It has a configuration including an upper end contraction portion formed by contracting toward the upper end and a lower end contraction portion formed by contraction toward the lower end at the lower end portion in the longitudinal direction. According to this configuration, the following effects can be obtained.
- the upper end of the retainer cone in the longitudinal direction has an upper end contraction portion formed by contraction toward the upper end, so the nozzle force disposed on the upper portion of the bag filter retainer when backwashing the filter cloth
- part of the compressed air can be dispersed in the radial direction (peripheral direction) of the retainer main body so as to be reflected by the inclined surface of the upper end contraction portion, and on the upper end side of the retainer main body Negative pressure can be prevented from occurring, the entire filter cloth including the upper end side of the retainer main body can be expanded substantially uniformly outward of the retainer main body, and dusts adhering to the filter cloth can be reliably removed. Excellent in maintenance reliability, it is possible to expand the effective filtration area at the time of dust collection, improve the dust collection efficiency, and save energy.
- the cone for the retainer is inserted into the center on the upper end side of the retainer body of the bag filter retainer, whereby the outer periphery of the retainer cone is used as the flow path, and the flow path at the upper end of the retainer body
- the cross-sectional area can be expanded compared to the conventional bench lily type, the load on the blower used for suction at the time of dust collection can be significantly reduced, and energy saving is excellent.
- the lower end portion in the longitudinal direction of the retainer cone has the lower end contraction portion formed by contraction toward the lower end, when suction is performed by the blower at the time of dust collection, the filtered clean air flow is contracted at the lower end. It can be smoothly moved upstream along the inclined surface of the part, and suction efficiency is excellent with less pressure loss.
- the shape of the retainer cone may be a shape having an upper end contraction portion and a lower end contraction portion at the upper end and the lower end, respectively.
- the flow of compressed air during backwashing and the flow of clean air during dust collection become uniform over the entire circumference, and filtration is carried out efficiently with no spots on the entire surface of the filter cloth. Can be preferred.
- a conical shape, a hemispherical shape, an elliptical hemispherical shape, a shell shape, a polygonal pyramid shape or the like is suitably used.
- the overall shape of the retainer cone includes a conical top (conical ball type) in which upper and lower conical contractions are vertically symmetrical, and a conical, hemispherical, or elliptical hemisphere in the conical upper contraction.
- a spindle type in which the lower end contraction portions such as a shell shape and a shell shape are combined is preferably used. This is because it is excellent in the rectification effect, and the flow of air can be smoothed to reduce pressure loss.
- the upper end contraction portion and the lower end contraction portion may be formed continuously, or a cylindrical or prismatic trunk portion may be formed between the upper end contraction portion and the lower end contraction portion.
- Cylindrical body or prismatic body By providing it, it can be used to adjust the total length of the retainer cone or to mount it on the bag filter retainer.
- the mounting height of the retainer cone is preferably set at a position such that the total length of the retainer cone falls within the range of the negative pressure generation area near the conventional mounting position of the bench lily tube.
- the invention described in claim 2 of the present invention is the cone for a retainer according to claim 1, wherein the upper end contraction portion and the lower end contraction portion are conical, hemispherical, elliptical hemispherical, respectively. It has a configuration in which it is formed into a shell-like, multi-pyramidal shape or a single shape.
- the upper end contraction portion of the retainer cone is formed into any one of a conical shape, a hemispherical shape, an elliptical hemispherical shape, a cannonball shape, and a multi-pyramid shape, so that the compression jetted at the time of backwashing
- the force of the center (axial center) of the retainer body can also be directed radially toward the outer peripheral side to be dispersed radially, and the filter cloth on the upper end side of the retainer body can be surely expanded outward over the entire circumference, Dust can be removed efficiently.
- the lower end contraction portion of the retainer cone has a conical shape, a hemispherical shape, an elliptical hemispherical shape, a shell-like shape, many
- the clean air flow drawn during dust collection can be moved upstream along the entire circumference of the lower end contraction portion to reduce the blower load. Energy saving.
- the angle of the top portion of the upper end contraction portion of the retainer cone varies depending on the length of the upper end contraction portion, but it should be 50 degrees to 90 degrees, preferably 65 degrees to 75 degrees. Is desirable.
- the angle at the top of the upper end contraction portion of the retainer cone becomes smaller than 65 degrees, the compressed air injected during backwashing becomes difficult to disperse on the outer peripheral side of the retainer cone, and the negative pressure reduction effect tends to decrease.
- There is a tendency for dust removal at the upper end of the retainer body to be insufficient, and as the temperature exceeds 75 °, the amount of compressed air reaching the lower end of the retainer body during backwashing decreases. There is a tendency that the dust removal on the lower end side of the retainer main body is insufficient.
- the angle of the top of the lower end contraction portion of the retainer cone is formed to be 40 degrees to 90 degrees, preferably 65 degrees to 75 degrees, which also changes depending on the length of the lower end contraction portion and suction pressure of the blower. .
- the angle of the top of the lower end contraction portion of the retainer cone becomes smaller than 65 degrees, the length of the lower end contraction portion tends to be longer and the processability and handleability tend to be deteriorated, and as it becomes larger than 75 degrees It can be seen that it is difficult for the clean air flow drawn during dust collection to move smoothly along the lower end contraction portion.
- the bag filter retainer according to claim 3 of the present invention is annularly formed of a metal wire.
- a retainer main body comprising a plurality of fixed rings arranged at predetermined intervals and a plurality of longitudinal wires joined to the outer side of the fixed ring, and inserted into a central portion on the upper end side of the retainer main body
- a configuration including the retainer cone according to any one of claims 1 to 3 and a fixing member for fixing the retainer cone to the retainer body.
- the retainer cone is inserted into the center on the upper end side of the retainer body, thereby retaining a portion of the compressed air ejected from the nozzle at the top of the retainer when the filter cloth is backwashed. It can be dispersed in the radial direction of the main body to prevent negative pressure from being generated on the upper end side of the retainer main body, and the entire filter cloth including the upper end side of the retainer main body is expanded outward to remove dust adhering to the filter cloth.
- the filter cloth can be prevented from being damaged and the long life of the filter cloth is excellent.
- the passage cross-sectional area of the upper end portion of the retainer body can be enlarged compared to the conventional bench lily type by arranging the retainer cone at the center portion on the upper end side of the retainer body. As a result, the load on the blower used for suction during dust collection can be significantly reduced, and energy saving is excellent.
- the retainer cone By having a fixing member for fixing the retainer cone to the retainer main body, the retainer cone can be easily attached to the existing retainer main body, and the filtering performance can be improved by effectively using the existing retainer main body. The life of the filter cloth can be significantly improved.
- the pressure of pulse jet (compressed air) can be selected in a wide range from low pressure (for example, about 196 kPa) to high pressure (for example, about 686 kPa), and the pressure control of pulse jet (compressed air) is Easy to handle, excellent in versatility.
- the fixing member may be any member that can fix the retainer cone to the retainer body, but it does not obstruct the flow of the air flow between the retainer body serving as the flow path and the retainer cone. Structure and arrangement are preferred. Specifically, a rod-like member such as a metal wire is disposed on the outer periphery of the retainer cone in parallel with the longitudinal direction of the retainer main body, and its tip is bent toward the outer periphery of the retainer main body. Or fixed by welding etc. to an annular flange disposed at the upper end of the longitudinal wire or the retainer main body, or a rod-like member such as a metal wire radially to the outer circumference of the retainer main body. It is preferable to use one that is disposed and fixed to the fixing ring of the retainer main body or the longitudinal wire by welding or the like.
- a fourth aspect of the present invention is the bag filter retainer according to the third aspect, wherein the fixing member is parallel to a longitudinal direction of the retainer main body on an outer periphery of the retainer cone. And an extending portion which is extended to the hanging portion and is fixed to an annular flange portion which is provided at an upper end portion of the retainer main body. .
- the hanging portion of the fixing member is disposed on the outer periphery of the retainer cone in parallel with the longitudinal direction of the retainer main body, so that it prevents the clean air flow during dust collection and the flow of compressed air during backwashing. It is possible to easily fix the extension portion extended to the hanging portion to the annular flange portion disposed at the upper end portion of the retainer body without causing harm, so that the mounting workability can be improved. Excellent.
- a fifth aspect of the present invention is the bag filter retainer according to the third aspect, wherein the fixing member has a radial shape in the radial direction of the retainer main body on the outer periphery of the retainer cone. And at least one of the longitudinal wire or the fixing ring of the retainer main body is fixed to one side or the other. /.
- the fixing member is radially disposed on the outer periphery of the retainer cone in the radial direction of the retainer main body and fixed to at least one of the longitudinal wire of the retainer main body and the fixing ring, clean air flow during dust collection In addition, it can reliably support the outer periphery of the retainer cone that does not impede the flow of compressed air during backwashing, and is excellent in fixing stability.
- a portion of the pulse jet (compressed air) injected when backwashing the filter cloth is dispersed in the radial direction (peripheral direction) of the retainer main body, and the entire filter cloth including the upper end side of the retainer main body is substantially uniformly removed.
- a part of the pulse jet (compressed air) injected when backwashing the filter cloth is dispersed in the radial direction (peripheral direction) of the retainer body to prevent negative pressure from being generated on the upper end side of the retainer body.
- the flow passage cross-sectional area of the upper end portion of the retainer main body can be expanded as compared with the conventional bench lily pipe. It is possible to provide a retainer cone that can significantly reduce the load on the load and improve energy saving.
- the clean air flow sucked and filtered by the blower can be guided and smoothly moved upstream of the retainer main body, reducing pressure loss of the bag filter retainer and improving suction efficiency.
- a retainer cone can be provided.
- the compressed air to be jetted at the time of backwashing can be distributed substantially uniformly without spots from the center (axial center) of the retainer main body at the upper end contraction portion, and the filter cloth on the upper end side of the retainer main body
- a portion of the compressed air to be jetted when backwashing the filter cloth can be dispersed in the radial direction of the retainer body to prevent negative pressure from being generated on the upper end side of the retainer body, including the upper end side of the retainer body Inflate the entire filter cloth outwards and remove dust from the filter cloth!
- the maintenance reliability is excellent, the effective filtration area at the time of dust collection can be expanded, and the dust collection efficiency can be improved, and the filter cloth is a retainer on the upper end side of the retainer body.
- the bag filter retainer is excellent in maintenance property and energy saving property, which can surely expand outward the entire filter cloth including the upper end side, can eliminate dust attached to the filter cloth, and can improve the drop effect. Can be provided.
- the filter cloth can be deformed in proportion to the pressure of the pulse jet (compressed air) at the time of backwashing, so it has excellent versatility that broadens the selection of the pressure of the pulse jet (compressed air), We can provide a bag filter retainer that is easy to handle and has excellent maintenance reliability.
- a bag filter cartridge excellent in fixing stability that can securely support the retainer cone from the outer periphery without obstructing the flow of clean air during dust collection and compressed air during backwashing. We can provide tena.
- FIG. 1 is a front view of a cone for a retainer according to a first embodiment of the present invention.
- FIG. 3 A plan view of a bag filter retainer provided with a retainer cone according to Embodiment 1 of the present invention
- FIG. 4 (a) Principal part schematic cross-sectional view showing the state of the filter cloth at the time of dust collection of the bag filter retainer provided with the cone for a retainer according to the first embodiment of the present invention (b) Principal part schematic cross-sectional view showing the state of the filter cloth at the time of backwashing of the bag filter retainer having the retainer cone in mode 1
- FIG. 5 (a) A front elevation view showing a first modified example of the retainer cone in the first embodiment of the present invention (b) A second modified example of the retainer cone in the first embodiment of the present invention A front view showing (c) A front view showing a third modified example of the retainer cone in the first embodiment of the present invention (d) A fourth modified example of the retainer cone in the first embodiment of the present invention Front view shown
- FIG. 6 (a) A cross-sectional front view of a main portion of a bag filter retainer provided with a cone for a retainer according to Embodiment 2 of the present invention ( b ) A cross-sectional view taken along line A-A in FIG. 6 ( a )
- FIG. 7 (a) Principal part schematic cross-sectional view showing the state of the filter cloth at the time of dust collection of the conventional bag filter retainer in a dust collector equipped with a pulse jet type dropping mechanism [b] Pulse jet type Removal of dust from the conventional bag filter retainer in a dust collector equipped with a drop mechanism, and a main part schematic cross-sectional view showing the state of the filter cloth at the time of drop (at the time of backwashing)
- FIG. 1 is a front view of a retainer cone according to Embodiment 1 of the present invention.
- FIG. 1, 1 is a conical cone type (abacus ball type) according to the first embodiment of the present invention, and the cone for retainer according to the first embodiment of the present invention 2
- the top contraction of the formed retainer cone 1, 2a is the top of the top contraction 2
- 3 is the longitudinal direction.
- the lower end shrinking portion of the retainer cone 1 which is formed in a conical shape by being contracted toward the lower end at the lower end portion, 3a is the top of the lower end shrinking portion 3 and 4 is formed between the upper end shrinking portion 2 and the lower end shrinking portion 3 It is a cylindrical torso.
- FIG. 2 is a front elevational view in cross section of a main portion of a bag filter retainer provided with a retainer cone according to the first embodiment of the present invention
- FIG. 3 is a core for the retainer according to the first embodiment of the present invention
- FIG. 6 is a plan view of the bag filter retainer provided with
- 10 is a bag filter retainer disposed by inserting the retainer cone 1 according to the first embodiment into the center on the upper end side of the retainer body 11, and 12 is a metal wire such as stainless steel.
- Fixed ring of retainer body 11 which is annularly formed and arranged at predetermined intervals, 13 is made of metal wire such as stainless steel etc. and joined by spot welding etc. on the circumference of the outer peripheral side of fixing ring 12
- An opening formed in the center of the opening 14b is an opening peripheral edge of the annular flange 14;
- 15 is a substantially L-shaped metal wire such as stainless steel;
- Fixing member for fixing the cone 1 for retainer to the tena main body 11 16a is a hanging portion of the fixing member 15 disposed parallel to the longitudinal direction of the retainer main body 11, 16b extends to the hanging portion 16a Extended part of the fixing member 15 which is locked by the opening peripheral part 14b of the annular flange part 14 disposed at the upper end of the retainer main body 11, a is a diameter of the retainer main body 11, 1 is an annular flange
- the upper surface force of the portion 14 is also the distance to the top 2 a of the upper end contraction portion 2 of the retainer cone 1, 1 is the cylindrical barrel 4 of the retainer cone 1 from the upper surface of the annular flange portion 14
- X is the length of the top contraction 2
- X is the length of the bottom contraction 3
- y is
- the retainer cone 1 is provided at the upper end and the lower end respectively with the upper end contraction portion 2 and the lower end contraction portion 3 By forming it with an axially symmetric rotating body, the flow of compressed air at backwashing and clean air flow at the time of dust collection can be made uniform over the entire circumference, so that the filter cloth can be efficiently and completely fixed. It can be filtered.
- the retainer cone 1 can be grasped by grasping the extending portion 16b of the fixing member 15 or the like.
- the extension portion 16 b can be easily inserted into the retainer main body 11, and the extension portion 16 b can be engaged with the opening peripheral portion 14 b of the annular flange portion 14 to be suspended and fixed.
- the retaining portion 16b can be fixed to the opening peripheral edge 14b of the annular flange 14 by the weight of the retainer cone 1, but the opening peripheral edge 14b of the annular flange 14 can be fixed.
- the extension portion 16 b can be held to effectively prevent positional deviation, rotation, rattling, and the like of the retainer coin 1.
- a flat annular member is disposed at the end of the extending portion 16b and screwed to the opening peripheral portion 14b of the annular flange portion 14, or the extending portion 16b and the opening peripheral portion 14b of the annular flange portion 14 are directly
- the retainer body 11 and the retainer cone 1 can be securely and firmly fixed, and the fixing stability is excellent.
- the number of the fixing members 15 can be appropriately selected from 2 to 6.
- the fixing members 15 are preferably arranged at equal angular intervals in the circumferential direction of the retainer cone 1. This is because the flow of the air flow becomes uniform over the entire circumference, dust removal can be performed without unevenness, and the stability of the filtration performance is excellent.
- the horizontal projected area ⁇ & 2 ⁇ 4) was formed to 0.2 times to 0.4 times.
- the maximum cross-sectional area (horizontal projection area) of the retainer cone 1 becomes smaller than 0.2 times the cross-sectional area (horizontal projection area) of the retainer main body 11, the compressed air injected during backwashing It becomes difficult to disperse it around the periphery, the negative pressure reduction effect is reduced, dust removal at the upper end of the retainer main body 11 tends to be insufficient, and as it becomes larger than 0.4 times
- the channel cross-sectional area ( ⁇ & 2 ⁇ 4 ⁇ ⁇ ⁇ 2 4) at the upper end of the main body 11 is insufficient, and the amount of compressed air reaching the lower end of the retainer main body 11 tends to be insufficient at the time of backwashing.
- the load on the blower at the time of dust collection tends to increase and the driving efficiency tends to decrease.
- the angle ⁇ of the top portion 2 a of the upper end contraction portion 2 of the retainer cone 1 was formed to have a force of 65 degrees to 75 degrees, which also changes depending on the length ⁇ of the upper end contraction portion 2.
- the angle ⁇ of the top portion 2a of the upper end contraction portion 2 of the retainer cone 1 becomes smaller than 65 °, the compressed air injected during backwashing becomes difficult to disperse on the outer peripheral side of the retainer cone 1 and the negative pressure is reduced.
- dust removal at the upper end of the retainer main body 11 tends to be insufficient, and as it becomes larger than 75 degrees, the lower end side of the retainer main body 11 is backwashed at the time of backwashing. This is because it was found that the amount of compressed air to be reached was reduced, and it was found that dust removal on the lower end side of the retainer main body 11 tended to be insufficient.
- the angle ⁇ of the top 3 a of the lower end contraction portion 3 of the retainer cone 1 is the length of the lower end contraction portion 3
- the length X tends to be longer and the processability and handleability tend to decrease.
- Fig. 4 (a) is a main part schematic cross-sectional view showing the state of the filter cloth at the time of dust collection of the retainer for the bag filter provided with the cone for a retainer according to the first embodiment of the present invention.
- FIG. 7 is a main part schematic cross-sectional view showing the state of the filter cloth at the time of backwashing of the bag filter retainer provided with the retainer cone in the first embodiment of the invention.
- 25 is a cylindrical filter cloth disposed on the outer periphery of the retainer body 11
- 30a is a pulse jet type disposed above the bag filter retainer 10 and injecting compressed air into the retainer body 11. It is a nozzle of 30 pay-off mechanisms.
- the suction negative pressure by the blower during dust collection increases at the upper end of the retainer main body 11 near the blower, so the amount of dust adhesion at the upper end of the retainer main body 11 increases.
- the positive pressure on the upper end side of the retainer main body 11 can be made higher than that on the lower end side near the nozzle 30a that jets the pulse jet by preventing the generation of the negative pressure at the time of backwashing. Dust can be removed effectively.
- FIG. 5 (a) is a front view showing a first modified example of the retainer cone in the first embodiment of the present invention
- FIG. 5 (b) is a second view of the retainer cone in the first embodiment of the present invention
- FIG. 5 (c) is a front view showing a third modified example of the retainer tongue according to the first embodiment of the present invention
- FIG. 5 (d) is the present invention
- FIG. 18 is a front view showing a fourth modified example of the retainer cone in the first embodiment of the present invention.
- the point that the retainer cone la in the first modification differs from the retainer cone 1 in the first embodiment is that the upper end contraction portion 2 and the lower end contraction portion 3b are not vertically symmetrical.
- the curvature of the top portion 3a 'of the lower end contraction portion 3b is smaller than the curvature of the top portion 2a of the upper end contraction portion 2 and is formed in an arc shape.
- the retainer cone lb in the second modification differs from the retainer cone 1 in the first embodiment in that the lower end contraction portion 3c is formed in a hemispherical shape.
- the retainer cone lc in the third modification is different from the retainer cone 1 in the first embodiment in that a cylindrical barrel 4 is disposed between the upper end contraction portion 2 and the lower end contraction portion 3. Is a point that is formed.
- the point in which the retainer cone Id in the fourth modification is different from the retainer cone 1 in the first embodiment is that the upper end contraction portion 2b and the lower end contraction portion 3d are each formed in an octagonal pyramid shape. And an octagonal prismatic cylindrical portion 4a is formed between the upper end contraction portion 2b and the lower end contraction portion 3d.
- a combination of the conical upper end contraction portion 2 with the conical lower end contraction portion 3 (3b, 3c) or the octagonal pyramidal shape The shape of the force retainer cone described for the combination of the upper end contraction portion 2b and the lower end contraction portion 3d is not limited to these combinations.
- the upper end contraction portion 2 it is also possible to use an oval hemispherical shape, a hemispherical shape, a shell-like shape, a polygonal pyramid shape other than an octagonal pyramid, etc. Shapes such as polygonal pyramid may be used.
- the axially symmetric rotating body as shown in FIG. 1 and FIGS.
- the back of the filter cloth 25 is disposed at the upper portion of the bag filter retainer 10
- a part of the compressed air can be dispersed in the radial direction (outer peripheral direction) of the retainer main body 11 as it is reflected by the inclined surface of the upper end compression portion 2.
- the negative pressure can be prevented from being generated on the upper end side of the retainer main body 11, and the entire filter cloth 25 including the upper end side of the retainer main body 11 can be expanded substantially uniformly outward.
- the dust can be reliably removed, maintenance reliability is excellent, the effective filtration area at the time of dust collection can be expanded, the dust collection efficiency can be improved, and the energy saving property is excellent.
- the retainer cone 1 is inserted into the center on the upper end side of the bag filter retainer 10 so that the outer periphery of the retainer cone 1 serves as a flow passage, and the flow at the upper end of the retainer main body 11 than the conventional bench lily pipe.
- the road cross-sectional area can be expanded, the load on the blower used for suction during dust collection can be significantly reduced, and energy saving is excellent.
- the retainer cone 1 has the lower end contraction portion 3 formed by being contracted toward the lower end at the lower end portion in the longitudinal direction of the retainer cone. Therefore, when suction is performed by the blower during dust collection, the filtered clean air is contracted at the lower end. It can be smoothly moved upstream along the inclined surface of the part 3 and the efficiency of suction with less pressure loss is excellent.
- the upper end contraction portion 2 of the retainer cone 1 is formed conically.
- the compressed air to be jetted can be uniformly distributed in the radial direction without causing any unevenness in the center (axial center) force of the retainer body 11 and the filter cloth 25 on the upper end side of the retainer body 11 can be distributed all around. It can be reliably expanded outward, and dust can be removed efficiently.
- the lower end contraction portion 3, 3b, 3c, 3d is formed in a conical shape, an elliptical hemispherical shape, a hemispherical shape, or a polygonal pyramid shape, so that the clean air flow drawn during dust collection is reduced at the lower end contraction portion 3 It can be moved smoothly upstream almost uniformly along the entire circumference of the block, and the load on the blower can be reduced, resulting in excellent energy saving.
- the retainer cone 1 is inserted into the center portion on the upper end side of the retainer main body 11 so that compressed air ejected from the nozzle 30a on the upper portion of the retainer main body 11 when the filter cloth 25 is backwashed.
- a part of the filter body can be dispersed in the radial direction of the retainer main body 11 to prevent negative pressure from being generated on the upper end side of the retainer main body 11, and the entire filter cloth 25 including the upper end side of the retainer main body 11 is expanded outward.
- the dust adhering to the cloth 25 can be reliably removed, the effective filtration area at the time of dust collection can be expanded, the dust collection efficiency can be improved, and the filter cloth 25 on the upper end side of the retainer main body 11 can be used.
- the strong attraction can be alleviated to prevent the filter cloth 25 from being broken, and the filter cloth is excellent in long life.
- the retainer cone 1 is inserted into the center on the upper end side of the retainer main body 11 to enlarge the flow passage cross-sectional area of the upper end of the retainer main body 11 compared to the conventional bench lily type. As a result, the load on the blower used for suction during dust collection can be greatly reduced, and energy saving is excellent.
- the retainer cone 1 can be easily attached to the existing retainer body 11, and the existing retainer body 11 can be effectively used to greatly improve the filtration performance and the life of the filter cloth.
- Fig. 6 (a) is a cross-sectional front view of an essential part of a bag filter retainer having a cone for a retainer according to a second embodiment of the present invention
- Fig. 6 (b) is an A-A line arrow of Fig. 6 (a).
- FIG. The same components as those in Embodiment 1 are assigned the same reference numerals and descriptions thereof will be omitted.
- the bag filter retainer 10a having the retainer cone in the second embodiment differs from the first embodiment in that the retainer cone 11 is radially extended in the radial direction of the retainer main body 1 1.
- the book fixing members 15a are disposed at equal angular intervals and are welded and fixed to the fixing ring 12 of the retainer main body 11.
- the retainer cone lc is inserted into the retainer main body 11, and the other end of the fixing member 15a is the retainer main body 11
- the retainer body 11 and retainer cone lc can be securely and firmly fixed by welding to the fixing ring 12 of the second embodiment.
- the other end of the fixing member 15 a may be fixed to the longitudinal wire 13 of the retainer main body 11.
- the retainer cone lc is used in the present embodiment, the retainer cone 1, la and lb described in the first embodiment can be used in the same manner. Further, in place of the fixing member 15a, the same fixing member 15 as that of the first embodiment is used for fixing.
- the number and arrangement of the fixing members 15a are the same as in the first embodiment, so the description will be omitted.
- the bag filter retainer having the retainer cone according to the second embodiment of the present invention is configured and operated. Therefore, the functions obtained in (1) to (5) of the first embodiment In addition to the above, the following effects can be obtained.
- the fixing member 15a is disposed on the outer periphery of the retainer cone lc in a radial manner in the radial direction of the retainer main body 11, and is fixed to at least one of the longitudinal wire 13 and the fixing ring 12 of the retainer main body 11.
- the pressure at the time of backwashing was measured by the bag filter retainer provided with the retainer cone described in the first embodiment.
- the bag filter retainer 10 used for the pressure measurement has a diameter a of 160 mm of the retainer main body 11, an overall length of 9000 mm of the retainer main body 11, an overall length of 128 mm of the retainer cone 1, an upper contraction portion 2 and a lower contraction portion of the retainer cone 1.
- Angle ⁇ of the top 2a, 3a of 3 a 70 degrees
- Pulsed jet (compressed air) of 294 kPa was jetted for 0.2 seconds from the nozzle 30a to the bag filter retainer 10, and the pressure was measured at each position of 200 mm, 350 mm and 3 000 mm from the upper end of the bag filter retainer 10 See Figure 4).
- a digital differential pressure gauge manufactured by Nagano Keiki Co., Ltd., model number GC62 was used.
- the pressure range is 5kPa to 5kPa
- the comparator output responsiveness: The display of measured values by 5 ms or less and the graph creation by analog output (responsiveness: within 50 ms or less) were performed.
- the peak hold function of the digital differential pressure gauge stored the maximum pressure and the minimum pressure applied to the pressure port in the internal memory as the peak value and the bottom value.
- the pressure was measured in the same manner as in Example 1 except that the pressure of the pulse jet (compressed air) ejected from the nozzle 30a was changed to 490 kPa.
- the pressure was measured in the same manner as in Example 1 except that a conventional bench lily pipe 52 (see FIG. 7) was attached instead of the retainer cone 1.
- the pressure was measured in the same manner as in Comparative Example 1 except that the pressure of the pulse jet (compressed air) injected from the nozzle 30a was changed to 490 kPa.
- FIGS. 8 to 11 show the measurement results of pressure.
- the horizontal axis represents time
- the vertical axis represents pressure. Note that on the graph, the part exceeding the display range ( ⁇ 1.2 kPa) is cut, and there are cases where the peak value that can not follow the response of the analog output does not appear, but the maximum described in the figure
- the pressure and the maximum negative pressure are the maximum pressure (peak value) and the minimum pressure (bottom value) values stored in the internal memory of the digital differential pressure gauge, respectively, and there is no problem in measurement.
- Example 1 the pressure in the steady state in which the injection force of the pulse jet (compressed air) also has a sufficient time has shown the suction pressure of the blower In Comparative Example 1, although it is 0.12 to 1 0.1 kPa On the other hand, in Example 1, the pressure was -0.23 to 0.18 kPa, and it became clear that the suction efficiency was improved and the load on the blower could be significantly reduced.
- injection is performed from the nozzle at the top of the retainer main body when backwashing the filter cloth by being inserted at the center of the upper end of the retainer, which is a negative pressure generation region near the mounting position of the conventional bench lily tube.
- the effective filtration area can be expanded, the dust collection efficiency can be improved, and the retainer for the bag filter excellent in energy saving property can be provided, the filtration efficiency of the existing dust collector is improved, and the life of the filter cloth is extended. Contribute to resource saving and energy saving.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800063413A CN101213006B (zh) | 2006-07-05 | 2006-09-13 | 保持器用锥体以及具有保持器用锥体的袋滤器用保持器 |
JP2007524107A JP4313834B2 (ja) | 2006-07-05 | 2006-09-13 | バグフィルタ用リテーナ |
US11/815,989 US20100132318A1 (en) | 2006-07-05 | 2006-09-13 | Retainer cone and bag filter retainer provided with the same |
GB0714028A GB2442083A (en) | 2006-07-05 | 2006-09-13 | Retainer cone and bug filter retainer having the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006186046 | 2006-07-05 | ||
JP2006-186046 | 2006-07-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008004319A1 true WO2008004319A1 (fr) | 2008-01-10 |
Family
ID=38894296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/318185 WO2008004319A1 (fr) | 2006-07-05 | 2006-09-13 | Cône de retenue et dispositif de retenue de filtre à poussière équipé de celui-ci |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100132318A1 (ja) |
JP (2) | JP4313834B2 (ja) |
KR (1) | KR100919853B1 (ja) |
CN (1) | CN101213006B (ja) |
GB (1) | GB2442083A (ja) |
WO (1) | WO2008004319A1 (ja) |
Cited By (1)
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WO2018101125A1 (ja) | 2016-11-29 | 2018-06-07 | セイコーエプソン株式会社 | 集塵装置、及び、シート製造装置 |
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US8110025B1 (en) | 2010-09-20 | 2012-02-07 | Walter Meier (Manufacturing) Inc. | Dust collector chip separation baffle |
JP5583564B2 (ja) * | 2010-12-08 | 2014-09-03 | 前田建設工業株式会社 | 粉体又は粒状体の加水装置 |
WO2013022163A1 (ko) * | 2011-08-10 | 2013-02-14 | Lee Choong-Joong | 벤츄리 노즐과 이를 탑재한 집진장치용 필터 구조체 |
KR101228884B1 (ko) * | 2011-08-10 | 2013-02-01 | 이충중 | 벤츄리 노즐과 이를 탑재한 집진장치용 필터 구조체 |
JP5426704B2 (ja) * | 2012-02-22 | 2014-02-26 | 株式会社神鋼環境ソリューション | バグフィルタ用リテーナ |
EP2668989A1 (de) * | 2012-06-01 | 2013-12-04 | Filtrox Engineering AG | Filterkerze und Reinigungseinrichtung für die Anschwemmfiltration, Anschwemmkerzenfilter, Verwendung einer Filterkerze, Verfahren zum Auf- oder Nachrüsten einer Filteranlage, Verfahren zum Betreiben eines Anschwemmkerzenfilters, Verfahren zum Phasenwechsel |
WO2014069811A1 (ko) * | 2012-11-02 | 2014-05-08 | Lee Choong-Joong | 탄두형 충격기류 분산 장치 |
KR101476696B1 (ko) * | 2013-02-26 | 2015-01-06 | 이충중 | 탄두형 충격기류 분산 장치 |
KR101446229B1 (ko) * | 2012-11-02 | 2014-10-01 | 이충중 | 탄두형 충격기류 분산 장치와 이를 탑재한 집진장치용 필터 구조체 |
KR101495057B1 (ko) * | 2013-01-14 | 2015-02-25 | 이충중 | 이동식 필터 백 재생장치 |
WO2016006742A1 (ko) * | 2014-07-11 | 2016-01-14 | 이충중 | 이동식 필터 백 재생장치 |
KR101737269B1 (ko) * | 2015-08-18 | 2017-05-18 | 이충중 | 구조를 개선한 블로우 파이프 및 이를 포함하는 집진기 |
US20210205745A1 (en) * | 2018-03-07 | 2021-07-08 | Products Unlimited, Inc. | Orifice-defining entry plate with support brace for filtration device |
EP3762126A4 (en) | 2018-03-07 | 2021-11-10 | Products Unlimited, Inc. | INLET PLATE DEFINING A PORT FOR A FILTRATION DEVICE |
CN111760388B (zh) * | 2020-07-09 | 2022-04-15 | 冀东水泥重庆合川有限责任公司 | 一种面向环保监控和节能优化的布袋收尘器 |
CN112071340B (zh) * | 2020-08-20 | 2022-03-29 | 西咸新区秦汉新城新丝路数字文化科技有限公司 | 一种互联网区块链技术研发用自动清灰储存磁盘 |
KR102658374B1 (ko) * | 2022-01-18 | 2024-04-17 | 주식회사 우진이엔지 | 가스 선회류 유도기 및 가스 선회류 유도기가 장착된 활성탄 재생 반응기 |
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2006
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- 2006-09-13 US US11/815,989 patent/US20100132318A1/en not_active Abandoned
- 2006-09-13 GB GB0714028A patent/GB2442083A/en not_active Withdrawn
- 2006-09-13 CN CN2006800063413A patent/CN101213006B/zh active Active
- 2006-09-13 WO PCT/JP2006/318185 patent/WO2008004319A1/ja active Application Filing
-
2007
- 2007-06-25 KR KR1020077014463A patent/KR100919853B1/ko active IP Right Grant
- 2007-10-22 JP JP2007274251A patent/JP2008049341A/ja not_active Withdrawn
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JPS61107917A (ja) * | 1984-09-26 | 1986-05-26 | ウエスチングハウス エレクトリック コ−ポレ−ション | ろ過装置 |
JPH05184836A (ja) * | 1991-12-31 | 1993-07-27 | Osamu Asai | セルフクリーニング型のバッグフィルタ集塵機 |
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WO2018101125A1 (ja) | 2016-11-29 | 2018-06-07 | セイコーエプソン株式会社 | 集塵装置、及び、シート製造装置 |
US11135540B2 (en) | 2016-11-29 | 2021-10-05 | Seiko Epson Corporation | Dust collecting device and sheet manufacturing apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP4313834B2 (ja) | 2009-08-12 |
GB2442083A8 (en) | 2011-03-09 |
KR100919853B1 (ko) | 2009-09-30 |
JP2008049341A (ja) | 2008-03-06 |
CN101213006B (zh) | 2012-05-23 |
CN101213006A (zh) | 2008-07-02 |
KR20080021576A (ko) | 2008-03-07 |
GB2442083A (en) | 2008-03-26 |
US20100132318A1 (en) | 2010-06-03 |
JPWO2008004319A1 (ja) | 2009-12-03 |
GB0714028D0 (en) | 2007-08-29 |
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