CN113244710A - Multi-surface staggered filtering air duct with spiral cross flow filtering function - Google Patents
Multi-surface staggered filtering air duct with spiral cross flow filtering function Download PDFInfo
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- CN113244710A CN113244710A CN202110635648.6A CN202110635648A CN113244710A CN 113244710 A CN113244710 A CN 113244710A CN 202110635648 A CN202110635648 A CN 202110635648A CN 113244710 A CN113244710 A CN 113244710A
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- 238000001914 filtration Methods 0.000 title abstract description 25
- 239000000428 dust Substances 0.000 claims abstract description 48
- 238000009295 crossflow filtration Methods 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 3
- 238000009776 industrial production Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
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- 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
- B01D46/005—Crossflow filtration, i.e. having an inlet and two outlets
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- 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
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
- B01D46/0008—Two or more filter elements not fluidly connected positioned in the same housing
-
- 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
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- 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
- B01D46/58—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 parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention relates to the technical field of dust collection, in particular to a multi-surface staggered filtering air duct with spiral cross-flow filtering, which comprises an inner-layer channel, a middle-layer channel and an outer-layer channel, wherein the inner-layer channel, the middle-layer channel and the outer-layer channel are arranged from inside to outside; the inner layer channel is sleeved on the inner side of the middle layer channel in a conical structure, the inner diameter of the inner layer channel is gradually increased from the outer end to the inner end, the outer end of the inner layer channel is closed, and the inner end of the inner layer channel is provided with an inner layer outlet; an inner-layer filter tube is arranged between the middle-layer channel and the inner-layer channel, and an outer-layer filter tube is arranged between the middle-layer channel and the outer-layer channel. The invention can be applied to the pretreatment of the dusty airflow with large air quantity, realizes the prior shunting of a large amount of clean air and the effective concentration of the dusty airflow, and further reduces the integral operation resistance of the dust removal system.
Description
Technical Field
The invention relates to the technical field of dust collection, in particular to a multi-surface staggered filtering air duct with spiral cross-flow filtering.
Background
In industrial production, dust pollution is ubiquitous. The productive dust can cause different diseases according to different pathological characteristics and action characteristics, and particularly has great harm to the lung. In the surrounding environment, the dust can corrode buildings, adhere to the surfaces of plants, affect photosynthesis of the plants and inhibit plant growth. Dust explosions may result when certain dusts are poorly controlled and the concentration of the aggregate is high.
The filtration type dust removal is the most applied dust removal equipment for preventing and treating air pollution, and the improvement of the dust removal function of the filtration equipment has important significance for industrial production application. The filter dust collector that uses in present industrial production, dust collection efficiency is high, but not good to the treatment effect of the dirty gas of big amount of wind (if the tunnelling operation face, it is integrative with the dust removal to ventilate, it not only is used for the dust exhaust to ventilate, still need dilute the poisonous and harmful gas that the operation produced), the running resistance is too big, even adopt compound dust pelletizing system, if adopt coarse effect cyclone to handle in advance at the front end that filters the dust removal, but all amount of wind still need pass through the filter dust pelletizing system, the too big problem of running resistance can not effectively be solved.
The national patent of publication number CN 112473309 a discloses a composite dust collection system with cross-flow filtration, which adopts the design of a double-layer spiral cross-flow filtration air duct, and utilizes the air duct space to perform cross-flow filtration, so as to distribute clean air in advance from the cross-flow filtration air duct, reduce the air volume in the subsequent dead-end filtration system, and reduce the overall operation resistance of the composite dust removal system. But the air flow resistance of the double-layer spiral staggered filter air cylinder is larger and needs to be further reduced by design.
Based on the above reasons, the invention provides a multi-surface staggered filtering air duct with spiral cross-flow filtering.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a multi-surface staggered filtering air duct with spiral cross-flow filtration, the treatment capacity of dust-containing air flow is improved by adopting double-layer cross-flow filtration and spiral cross-flow filtration together with multiple surfaces, the local resistance of air flow is reduced by adopting a complementary section gradual change design, the multi-surface staggered filtering air duct can be applied to pretreatment of the dust-containing air flow with large air volume, a large amount of clean air is shunted in advance, the dust-containing air flow is effectively concentrated, and the integral operation resistance of a dust removal system is further reduced.
In order to realize the purpose of the invention, the invention adopts the technical scheme that:
the invention discloses a multi-surface cross-flow filtering air duct with spiral cross-flow filtering, which comprises an inner layer channel, a middle layer channel and an outer layer channel which are arranged from inside to outside, wherein the outer layer channel is in a tubular structure, the outer end of the outer layer channel is closed, the inner end of the outer layer channel is provided with an outer layer outlet, the middle layer channel is sleeved in the outer layer channel in a conical structure, the outer diameter of the middle layer channel is gradually reduced from the outer end to the inner end, the outer end of the middle layer channel is provided with an inlet, and the inner end of the middle layer channel is connected with a concentrated dust outlet channel; the inner layer channel is sleeved on the inner side of the middle layer channel in a conical structure, the inner diameter of the inner layer channel is gradually increased from the outer end to the inner end, the outer end of the inner layer channel is closed, and the inner end of the inner layer channel is provided with an inner layer outlet; an inner-layer filter tube is arranged between the middle-layer channel and the inner-layer channel, and an outer-layer filter tube is arranged between the middle-layer channel and the outer-layer channel.
The spiral filter is characterized in that a spiral channel is arranged inside the middle-layer channel and consists of a plurality of spiral filter plates, an outer air outlet is arranged at the joint of the spiral channel and the outer filter tube, and an inner air outlet is arranged at the joint of the spiral channel and the inner filter tube.
The distance between the adjacent spiral filter plates is gradually increased from the outer air outlet to the inner air outlet.
And the distance between the adjacent spiral filter plates is increased by the expansion angle of 3-5 degrees from the outer air outlet to the inner air outlet.
The spiral filter plate is made of porous materials.
The spiral filter plate is a ceramic filter element or a stainless steel filter element or a sintered plate filter element.
The invention has the beneficial effects that:
1. the design of the spiral cross flow channel increases the treatment area and improves the purification efficiency. The air duct provided by the invention adopts three layers of channels and two cross-flow filtering surfaces, which is beneficial to improving the treatment area of the dusty air flow; the spiral channel is arranged in the middle layer channel, so that on one hand, the air flow can flow in the middle layer channel in a spiral mode, the scouring effect on dust cakes deposited on the two cross-flow filtering surfaces is improved, on the other hand, the spiral channel is designed into a channel with a cross-flow filtering function, the dust-containing air flow treatment area is further increased, the multi-surface parallel connection is realized, and more clean air is divided in advance.
2. The complementary section gradual change design avoids overlarge local resistance. Based on the change of the on-way air quantity in the inner, middle and outer three-layer channels, the gradual change design of the cross sections of the channels is adopted on the premise of maintaining the original appearance of the air duct, so that the concentration of the cross sections of the air flow in the channels is avoided, and the local resistance of the air flow in the channels is reduced. And moreover, the spiral channel is internally provided with a structure with a narrow outer part and a wide inner part, so that the sizes of the whole cross sections of the inner outlet and the outer outlet of the spiral channel can be kept close to each other, and the local resistance caused by the concentration of wind current can be avoided.
3. As a pretreatment technology, the operation load of a subsequent dust removal system can be effectively reduced. When the design provided by the invention is applied to pretreatment of high-air-volume dust-containing airflow, a large amount of clean air can be shunted in advance, and the dust-containing concentration of the airflow entering a subsequent dust treatment system can be concentrated, so that the load of the subsequent dust removal system is obviously reduced, and the overall running resistance is reduced. The scale of a subsequent dust removal system can be reduced, and the overall investment and operation and maintenance cost are reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the filter comprises an outer filter tube, 2 inner filter tubes, 3 spiral filter plates, 4 inner channels, 5 middle channels, 6 outer channels, 7 outer air outlets, 8 spiral channels, 10 dust shrinkage outlet channels, 11 inner air outlets, 12 outer outlet ports and 13 inlet ports.
Detailed Description
The invention is further illustrated below:
referring to fig. 1 of the drawings, a drawing,
the invention discloses a multi-surface cross-filtration air duct with spiral cross-flow filtration, which comprises an inner-layer channel 4, a middle-layer channel 5 and an outer-layer channel 6 which are arranged from inside to outside, wherein the outer-layer channel 6 is of a tubular structure, the outer end of the outer-layer channel is closed, the inner end of the outer-layer channel is provided with an outer-layer outlet 12, the middle-layer channel 5 is sleeved in the outer-layer channel 6 in a conical structure, the outer diameter of the middle-layer channel is gradually reduced from the outer end to the inner end, the outer end of the middle-layer channel is provided with an inlet 13, and the inner end of the middle-layer channel is connected with a concentrated dust outlet channel 10; the inner-layer channel 4 is sleeved on the inner side of the middle-layer channel 5 in a conical structure, the inner diameter of the inner-layer channel is gradually increased from the outer end to the inner end, the outer end of the inner-layer channel is closed, and the inner end of the inner-layer channel is provided with an inner-layer outlet; an inner-layer filter pipe 2 is arranged between the middle-layer channel 5 and the inner-layer channel 4, an outer-layer filter pipe 1 is arranged between the middle-layer channel 5 and the outer-layer channel 6, and two cross-flow filter surfaces of the three-layer channels are adopted, so that the dust-containing air flow treatment area is favorably increased. When the method is applied to pretreatment of the large-air-volume dusty airflow, a large amount of clean air can be shunted in advance, and the airflow dusty concentration entering a subsequent dust treatment system can be concentrated, so that the load of the subsequent dust removal system is remarkably reduced, and the overall running resistance is reduced. The scale of a subsequent dust removal system can be reduced, and the overall investment and operation and maintenance cost are reduced.
The spiral channel 8 is arranged in the middle layer channel 5, the spiral channel 8 is composed of a plurality of spiral filter plates 3, an outer air outlet 7 is arranged at the joint of the spiral channel 8 and the outer layer filter pipe 1, an inner air outlet 11 is arranged at the joint of the spiral channel 8 and the inner layer filter pipe 2, the spiral channel is arranged in the middle layer channel, on one hand, air flow can flow in the middle layer channel in a spiral mode, the scouring effect on dust cakes deposited on two cross-flow filter surfaces is improved, on the other hand, the spiral channel is designed into a channel with a cross-flow filtering function, the dust-containing air flow treatment area is further increased, and the multi-surface parallel connection is realized, so that more clean air can be shunted in advance.
The distance between the adjacent spiral filter plates 3 is gradually increased from the outer air outlet 7 to the inner air outlet 11.
Adjacent interval between the spiral filter plate 3 by go out gas port 7 to interior gas outlet 11 and be 3~5 expansion angle grow, and 5 interior gas stream dusty concentration of middle level passageway improves (concentration), and the velocity of flow of gas in the passageway is tried to reduce gradually, but because the design that 5 sections of middle level passageway diminish gradually, the gas velocity of flow can not lead to the velocity of flow to reduce because of the reduction of the gas total amount in the filtration passageway, has guaranteed the shearing force that the wind current washed the dirt cake.
The spiral filter plate 3 is made of a porous material, and preferably, the spiral filter plate 3 is a ceramic filter element or a stainless steel filter element or a sintered plate filter element.
The working principle is as follows:
the dusty airflow enters from the left inlet 13 of the middle layer channel 5 of the cross filtering air cylinder, and the dusty airflow rotates and flows in the middle layer channel 5 under the flow guiding effect of the spiral channel 8.
Clean air flow can pass through the inner-layer filter tube 2 to enter the inner-layer channel 4, or pass through the outer-layer filter tube 1 to enter the outer-layer channel 6, or pass through the spiral filter plate 3 to enter the spiral channel 8, air flow entering the spiral channel 8 can enter the inner-layer channel 4 through the inner air outlet 11 or enter the outer-layer channel 6 through the outer air outlet 7, and dust in the air flow is correspondingly intercepted on the outer wall of the inner-layer conical filter tube 2, the outer wall of the outer-layer filter tube 1 and the outer wall of the spiral filter plate 3 and is attempted to be deposited to form dust cakes. The dust cake which is attempted to be deposited is washed by the shearing force generated by the wind flow rotating and flowing in the middle layer channel and continues to rotate along the wind channel along with the wind flow.
With the leaving of a large amount of clean gas, the dust concentration of the gas flow in the middle layer channel 5 is increased (concentrated), the flow speed of the gas in the channel is reduced gradually, but due to the design that the section of the middle layer channel 5 is reduced gradually, the flow speed of the gas cannot be reduced due to the reduction of the total gas amount in the filtering channel, and the shearing force of the wind flow for washing the dust cake is ensured.
The clean air flows in the inner layer channel 4, the outer layer channel 6 and the spiral channel 8 are discharged through respective outlets; while the dusty gas stream in the intermediate conical channel 5 enters the next device of the dedusting system through the concentrated dust outlet channel 10.
Through multi-face multi-azimuth cross-flow filtration between the inner layer and the middle layer, between the middle layer and the outer layer and on the spiral layer, the cross-flow filtration area is increased, and clean airflow can be conveniently and rapidly separated from dust-containing airflow in a large quantity.
Through the design of complementary section gradual change of each channel of the inner layer, the middle layer and the outer layer and the size design of the channel with the width being wide and the width being narrow in the spiral layer, the relative stability of the wind speed of each wind flow section is kept, the overlarge local resistance is prevented, and the overall stable wind flow and the smaller running resistance are maintained.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention and the contents of the drawings or directly or indirectly applied to the related technical fields are included in the scope of the present invention.
Claims (6)
1. The utility model provides a have multiaspect mistake filter dryer that spiral cross-flow filtered concurrently which characterized in that: the device comprises an inner-layer channel (4), a middle-layer channel (5) and an outer-layer channel (6) which are arranged from inside to outside, wherein the outer-layer channel (6) is of a tubular structure, the outer end of the outer-layer channel is closed, and the inner end of the outer-layer channel is provided with an outer-layer outlet (12); the middle layer channel (5) is sleeved in the outer layer channel (6) in a conical structure, the outer diameter of the middle layer channel is gradually reduced from the outer end to the inner end, the outer end of the middle layer channel is provided with an inlet (13), and the inner end of the middle layer channel is connected with the concentrated dust outlet channel (10); the inner layer channel (4) is sleeved on the inner side of the middle layer channel (5) in a conical structure, the inner diameter of the inner layer channel is gradually increased from the outer end to the inner end, the outer end of the inner layer channel is closed, and the inner end of the inner layer channel is provided with an inner layer outlet; an inner-layer filter tube (2) is arranged between the middle-layer channel (5) and the inner-layer channel (4), and an outer-layer filter tube (1) is arranged between the middle-layer channel (5) and the outer-layer channel (6).
2. The multi-face staggered filter drum combined with spiral cross-flow filtration according to claim 1, wherein: the inside of middle level passageway (5) is equipped with spiral channel (8), spiral channel (8) comprise a plurality of spiral filter plate (3), spiral channel (8) with the handing-over department of outer chimney filter (1) is equipped with out gas port (7), and its handing-over department with inlayer chimney filter (2) is equipped with interior gas outlet (11).
3. The multi-face staggered filter drum combined with spiral cross-flow filtration according to claim 2, wherein: the distance between the adjacent spiral filter plates (3) is gradually increased from the outer air outlet (7) to the inner air outlet (11).
4. The multi-face staggered filter drum combined with spiral cross-flow filtration according to claim 3, wherein: the distance between the adjacent spiral filter plates (3) is increased by the expansion angle of 3-5 degrees from the outer air outlet (7) to the inner air outlet (11).
5. The multi-face staggered filter drum combined with spiral cross-flow filtration according to claim 4, wherein: the spiral filter plate (3) is made of porous materials.
6. The multi-face staggered filter drum combined with spiral cross-flow filtration according to claim 5, wherein: the spiral filter plate (3) is a ceramic filter element or a stainless steel filter element or a sintered plate filter element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110635648.6A CN113244710A (en) | 2021-06-08 | 2021-06-08 | Multi-surface staggered filtering air duct with spiral cross flow filtering function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110635648.6A CN113244710A (en) | 2021-06-08 | 2021-06-08 | Multi-surface staggered filtering air duct with spiral cross flow filtering function |
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| Publication Number | Publication Date |
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| CN113244710A true CN113244710A (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110635648.6A Pending CN113244710A (en) | 2021-06-08 | 2021-06-08 | Multi-surface staggered filtering air duct with spiral cross flow filtering function |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006014962U1 (en) * | 2006-09-27 | 2008-02-07 | Mann + Hummel Gmbh | filtering device |
| CN202277724U (en) * | 2011-08-30 | 2012-06-20 | 成都易态科技有限公司 | Crossflow filtration filter core component |
| CN105709480A (en) * | 2014-12-18 | 2016-06-29 | 克朗斯股份公司 | Hydrodynamically Optimized Filter Candle |
| CN112473309A (en) * | 2020-12-22 | 2021-03-12 | 南昌大学 | Combined type dust collecting system with cross-flow filtration |
| CN216934978U (en) * | 2021-06-08 | 2022-07-12 | 南昌大学 | Multi-surface staggered filtering air duct with spiral cross flow filtering function |
-
2021
- 2021-06-08 CN CN202110635648.6A patent/CN113244710A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006014962U1 (en) * | 2006-09-27 | 2008-02-07 | Mann + Hummel Gmbh | filtering device |
| CN202277724U (en) * | 2011-08-30 | 2012-06-20 | 成都易态科技有限公司 | Crossflow filtration filter core component |
| CN105709480A (en) * | 2014-12-18 | 2016-06-29 | 克朗斯股份公司 | Hydrodynamically Optimized Filter Candle |
| CN112473309A (en) * | 2020-12-22 | 2021-03-12 | 南昌大学 | Combined type dust collecting system with cross-flow filtration |
| CN216934978U (en) * | 2021-06-08 | 2022-07-12 | 南昌大学 | Multi-surface staggered filtering air duct with spiral cross flow filtering function |
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