CN111467884A - Front dust removal and collection system of cloth bag type air dust collector - Google Patents
Front dust removal and collection system of cloth bag type air dust collector Download PDFInfo
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- CN111467884A CN111467884A CN202010169839.3A CN202010169839A CN111467884A CN 111467884 A CN111467884 A CN 111467884A CN 202010169839 A CN202010169839 A CN 202010169839A CN 111467884 A CN111467884 A CN 111467884A
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- air
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- hopper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- 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
- 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
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses a front dust removal and collection system of a cloth bag type air dust collector, which comprises an air inlet cylinder, wherein an air inlet pipe is arranged at the upper part of the air inlet cylinder, an exhaust pipe extending into the air inlet cylinder is arranged at the top of the air inlet cylinder, a dust collection hopper is arranged at the lower part of the air inlet cylinder, a dust box is arranged below the dust collection hopper, a conical air hopper is arranged below the exhaust pipe, and the upper part of the exhaust pipe is connected with the air inlet pipe of the cloth bag type air dust collector. The invention adopts the conical air hopper to carry out the preposed dust removal treatment of the industrial gas, so that large granular substances in the dust-containing gas are collected on the inner wall of the air hopper in advance, and simultaneously, the speed of the dust-containing gas reaching the dust hopper is reduced to be smaller or the air flow is dispersed, thereby preventing the air flow from blowing up the dust collected in the dust hopper and mixing the dust back to enter the exhaust pipe.
Description
Technical Field
The invention relates to the technical field of industrial gas dust removal equipment, in particular to a front dust removal and collection system of a cloth bag type air dust collector.
Background
In the steel industry, because air to be filtered contains a large amount of hard particles, a cloth bag type air dust collector is directly adopted for air filtration, the abrasion of a filter bag is serious, particularly the abrasion of the bottom of the filter bag is serious, the process of replacing the cloth bag of the air dust collector is complex, and the cost is high, so that a front dust removal system is required to be arranged in front of the cloth bag type air dust collector for pre-separating the hard large particle substances in the air. At present, a cyclone dust collector is generally adopted to carry out primary preposed dust collection and dust collection on air containing a large amount of hard and sharp particle dust, however, the dust collection efficiency of the prior preposed dust collection system on large particle substances is not high, and part of the large particle substances still enter a rear bag dust collector to cause serious abrasion of a bag, so that the service life of the bag air dust collector is influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the front dust removal and collection system of the bag type air dust collector, which has a simple structure, can effectively pre-separate hard large-particle substances in industrial waste gas, prolongs the service life of the whole air dust collector and reduces the maintenance workload.
In order to achieve the purpose, the technical scheme of the invention is to design a front dust removal and dust collection system of a cloth bag type air dust collector, which comprises an air inlet cylinder, wherein an air inlet pipe is arranged at the upper part of the air inlet cylinder, an exhaust pipe extending into the air inlet cylinder is arranged at the top of the air inlet cylinder, a dust collection hopper is arranged at the lower part of the air inlet cylinder, a dust box is arranged below the dust collection hopper, a conical air hopper is arranged below the exhaust pipe, and the upper part of the exhaust pipe is connected with the air inlet pipe of the cloth bag type air dust collector. The airflow containing hard large particles enters the air inlet cylinder body from the air inlet pipe at a high speed, and forms downward high-speed spiral movement airflow under the guiding action of the conical air hopper in the air inlet cylinder body, and most hard large particle substances in the airflow are separated from the airflow under the action of centrifugal force, collide with the inner wall of the air hopper and are captured on the inner wall of the air hopper. The invention adopts the conical air hopper to carry out the preposed dust removal treatment of the industrial gas, so that large granular substances in the dust-containing gas are collected on the inner wall of the air hopper in advance, and simultaneously, the speed of the dust-containing gas reaching the dust hopper is reduced to be smaller or the air flow is dispersed, thereby preventing the air flow from blowing up the dust collected in the dust hopper and mixing the dust back to enter the exhaust pipe.
The preferable technical scheme is that the conical air scoop comprises an upper air scoop and a lower air scoop which are overlapped up and down and are communicated with each other in at least two inverted cones. The wind fill stack of at least two back tapers, the air current that contains the large granule forms decurrent high-speed screw motion air current under the guide effect of last wind fill, most stereoplasm large granule material in the air current separates from the air current under the effect of centrifugal force, collide with the inner wall of last wind fill and be caught in the inner wall of last wind fill, the spiral air current at this moment still has great kinetic energy and a large amount of slightly less particle size's material including by the parcel, the air current that contains a large amount of slightly less particle size material is rotatory and is getting into down the wind fill from last wind fill, the space is enlarged suddenly after the last wind fill gets into down the wind fill, the air current rotational speed suddenly drops, partial little granule material is also caught on the inner wall of down the wind fill, carry out the fractional stage collection to the particulate matter of the different grade type in the dusty gas, avoid the.
When an air inlet pipe of the cloth bag type air dust collector sucks air through an exhaust pipe, in order to avoid that dust collected in an ash collecting hopper is sucked out or the suction force sucked up by the exhaust pipe collides with downward airflow in a conical air hopper to form series flow, a further preferable technical scheme is that an air guide cylinder is further arranged in the conical air hopper, the air guide cylinder and the exhaust pipe are arranged, the upper section of the air guide cylinder is cylindrical, the lower section of the air guide cylinder is conical, a gap is formed between the periphery of the air guide cylinder and a lower outlet of the lower air hopper, the lower bottom surface of the air guide cylinder is lower than the lower bottom surface of the lower air hopper, and the upper top surface of the air guide cylinder is higher than the lower bottom surface of the upper air hopper. Dust collected by the inner wall of the conical air hopper falls into the dust collecting hopper from a gap outside the air guide cylinder; when the exhaust pipe inhales, gas enters from the bottom of the air guide cylinder and then is exhausted from the exhaust pipe, the inner wall of the conical cylinder body at the lower section of the air guide cylinder plays a role of blocking and intercepting part of dust again, and the dust removal efficiency is improved.
In order to enable all dust-containing gas entering the air inlet cylinder from the air inlet pipe to enter the exhaust pipe after being subjected to pre-dedusting, a further preferable technical scheme is that a partition plate is arranged on the upper top surface of the upper air hopper, the air guide cylinder penetrates through the partition plate and is in through connection with the exhaust pipe, and a blocking net matched with the air guide cylinder is arranged on the inner wall of the air guide cylinder. The exhaust pipe is communicated with the air duct, the outer wall of the exhaust pipe is hermetically connected with the upper top surface of the upper air hopper through a partition plate, dust-containing gas firstly enters the conical air hopper to primarily remove large particles, then rises from the bottom of the air duct and enters the exhaust pipe, and then enters the dust remover to remove dust of small particles, so that the dust removal efficiency of the front dust removal system is improved, and the dust removal filtering pressure of the rear dust remover is reduced; the inner wall of the air duct is provided with the blocking net, so that large-particle dust collected in the dust collecting hopper can be prevented from being sucked out to the air dust collector when the exhaust duct sucks air. The barrier net can be an arc-shaped or conical barrier net which protrudes upwards, so that dust on the barrier net can fall freely.
In order to enable dust-containing gas entering the upper air hopper and the lower air hopper to form spiral downward whirlwind in a uniform direction, avoid the formation of turbulent flow caused by left-right collision of air flow in the air hoppers and increase the capability of the upper air hopper and the lower air hopper for capturing large-particle dust, a further preferable technical scheme is that spiral wind guide structures are arranged in the upper air hopper and the lower air hopper.
The spiral wind guiding structure comprises a spiral wind guiding plate, and spiral cyclone channels are formed between the wind guiding plate and the inner wall of the upper wind hopper, the inner wall of the lower wind hopper and the outer wall of the wind guiding cylinder respectively.
According to a further preferable technical scheme, elastic material layers are arranged on the inner walls of the upper air hopper and the lower air hopper and on the upper surfaces of the air guide plates. Set up the elastic material layer, the large granule dust among the dusty gas strikes on the elastic material layer, and the elastic recoil strength of elastic material layer has reduced the speed of large granule dust, and the difference appears with the gaseous speed of dusty, and the large granule dust is no longer along with gaseous motion to accelerate the subsidence of large granule dust.
Further preferably, the spiral wind guiding structure comprises spiral wind guiding grooves arranged on the inner walls of the upper wind scoop and the lower wind scoop.
In order to avoid the deposition of large-particle dust in the upper air hopper and the lower air hopper, a further preferable technical scheme is that vibration motors are arranged on the outer side walls of the upper air hopper and the lower air hopper.
The further preferred technical scheme is that an airflow buffering bin is further arranged between the air inlet pipe and the air inlet cylinder, and one side surface of the airflow buffering bin is matched with the outer wall of the air inlet cylinder. The airflow buffering bin can enable high-speed dust-containing gas to slightly reduce the speed and enter the air inlet barrel more stably, and the separation efficiency is improved.
In order to facilitate the separation of the ash box when the front-end dust removal and ash collection system operates, a further preferred technical scheme is that an outlet of the ash collection hopper is connected with an inlet of the ash box through a slot, and a plug board used for closing and opening a connecting port between the ash collection hopper and the ash box is arranged in the slot.
In order to remind and warn workers to clean the ash collecting hopper and the ash box, the further preferable technical scheme is that a material level meter for detecting the ash level in the ash collecting hopper is further arranged on the side wall of the ash collecting hopper.
The invention has the advantages and beneficial effects that: the front dust removal and collection system has the characteristics of simple structure, capability of effectively pre-separating hard large-particle substances in industrial waste gas, prolonged service life of the integral air dust collector and reduced maintenance workload. The invention adopts the conical air hopper to carry out the preposed dust removal treatment of the industrial gas, so that large granular substances in the dust-containing gas are collected on the inner wall of the air hopper in advance, and simultaneously, the speed of the dust-containing gas reaching the dust hopper is reduced to be smaller or the air flow is dispersed, thereby preventing the air flow from blowing up the dust collected in the dust hopper and mixing the dust back to enter the exhaust pipe; the arrangement of at least two air hoppers on the upper part and the lower part is used for grading and collecting different types of particle substances in the dust-containing gas, so that excessive concentration of the particle substances is avoided; an air guide cylinder is arranged in the air hopper, when an air inlet pipe of the air dust remover sucks air through an exhaust pipe, air enters from the bottom of the air guide cylinder and is exhausted from the exhaust pipe, and a conical cylinder at the lower section of the air guide cylinder plays a role in blocking and intercepting part of dust again, so that the dust removal efficiency is improved; the exhaust pipe is communicated with the air duct, the outer wall of the exhaust pipe is hermetically connected with the upper top surface of the upper air hopper through a partition plate, dust-containing gas firstly enters the conical air hopper to primarily remove large particles, then rises from the bottom of the air duct and enters the exhaust pipe, and then enters the dust remover to remove dust of small particles, so that the dust removal efficiency of the front dust removal system is improved, and the dust removal filtering pressure of the rear dust remover is reduced; the inner wall of the air duct is provided with the blocking net, so that large-particle dust collected in the dust collecting hopper can be prevented from being sucked out to the air dust collector when the exhaust duct sucks air. The blocking net can be an arc-shaped or conical blocking net which protrudes upwards, so that dust on the blocking net can fall freely; the spiral wind guide structure enables dust-containing gas entering the upper wind scoop and the lower wind scoop to form spiral downward whirlwind in a uniform direction, avoids the air flow from colliding left and right in the wind scoop to form turbulent flow, and increases the capacity of the upper wind scoop and the lower wind scoop for capturing large-particle dust; the airflow buffering bin can enable high-speed dust-containing gas to slightly reduce the speed and enter the air inlet barrel more stably, and the separation efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of a pre-dedusting ash collection system of the present invention.
In the figure: 1. an air inlet cylinder; 2. an air inlet pipe; 3. an exhaust duct; 4. a dust collecting hopper; 5. an ash bin; 6. an upper wind scoop; 7. a lower wind scoop; 8. an air duct; 9. blocking; 10. an air deflector; 11. a vibration motor; 12. an airflow buffer bin; 13. a slot; 14. a level gauge; 15. a separator.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in figure 1, the invention relates to a front dust removal and collection system of a bag type air dust collector, which comprises an air inlet cylinder body 1, wherein an air inlet pipe 2 is arranged at the upper part of the air inlet cylinder body, an exhaust pipe 3 extending into the air inlet cylinder body is arranged at the top part of the air inlet cylinder body, a dust collection hopper 4 is arranged at the lower part of the air inlet cylinder body, an ash box 5 is arranged below the dust collection hopper, a conical air hopper is arranged below the exhaust pipe, and the upper part of the exhaust pipe is connected with the air inlet pipe of the bag type air dust collector.
The conical wind scoop comprises at least two inverted cone upper wind scoop 6 and lower wind scoop 7 which are overlapped and communicated up and down.
An air duct 8 is further arranged in the conical air hopper, the air duct and the exhaust pipe are coaxially arranged, the upper section of the air duct is cylindrical, the lower section of the air duct is conical, a gap is reserved between the periphery of the air duct and the lower outlet of the lower air hopper, the lower bottom surface of the air duct is lower than the lower bottom surface of the lower air hopper, and the upper top surface of the air duct is higher than the lower bottom surface of the upper air hopper.
The upper top surface of the upper air hopper is provided with a partition plate 15, the air guide cylinder penetrates through the partition plate and is communicated with the exhaust pipe, and the inner wall of the air guide cylinder is provided with a conical blocking net 9.
Spiral air guide structures are arranged in the upper air hopper and the lower air hopper, each spiral air guide structure comprises a spiral air guide plate 10, and spiral cyclone channels are formed among the air guide plates, the inner wall of the upper air hopper, the inner wall of the lower air hopper and the outer wall of the air guide cylinder respectively.
And elastic material layers are arranged on the inner walls of the upper air hopper and the lower air hopper and on the upper surfaces of the air deflectors.
And the outer side walls of the upper air hopper and the lower air hopper are provided with vibrating motors 11.
An airflow buffer bin 12 is further arranged between the air inlet pipe and the air inlet cylinder, and one side surface of the airflow buffer bin is matched with the arc-shaped outer wall of the air inlet cylinder.
The outlet of the ash collecting hopper is connected with the inlet of the ash box through a slot 13, and a plugboard used for closing and opening a connecting port between the ash collecting hopper and the ash box is arranged in the slot.
And a material level meter 14 for detecting the ash level in the ash collecting hopper is also arranged on the side wall of the ash collecting hopper.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a leading dust removal collection grey system of sack formula air cleaner, includes the air inlet barrel, the upper portion of air inlet barrel is equipped with the air-supply line, is equipped with the exhaust pipe that stretches into in the air inlet barrel at air inlet barrel top, the lower part of air inlet barrel is equipped with the ash collecting bucket, and the below of ash collecting bucket sets up the ash bin, its characterized in that, the below of exhaust pipe sets up the toper wind scoop, the top and the air-supply line connection of sack formula air cleaner of exhaust pipe.
2. The front dust-removing and dust-collecting system of the bag-type air dust collector as claimed in claim 1, wherein the tapered air scoop comprises at least two inverted cone-shaped upper air scoop and lower air scoop which are overlapped and communicated up and down.
3. The bag-type air dust collector front dust-collecting system according to claim 2, wherein an air duct is further arranged in the conical air funnel, the air duct and the exhaust duct are arranged, the upper section of the air duct is cylindrical, the lower section of the air duct is conical, a gap is formed between the periphery of the air duct and the lower outlet of the lower air funnel, the lower bottom surface of the air duct is lower than the lower bottom surface of the lower air funnel, and the upper top surface of the air duct is higher than the lower bottom surface of the upper air funnel.
4. The front dust removal and collection system of the bag-type air dust collector of claim 3, wherein a partition plate is arranged on the upper top surface of the upper air hopper, the air duct penetrates through the partition plate and is communicated with the exhaust duct, and a blocking net is arranged on the inner wall of the air duct.
5. The front dust-collecting and ash-collecting system of the bag-type air dust collector as claimed in claim 4, wherein a spiral air-guiding structure is arranged in the upper air hopper and the lower air hopper.
6. The front dust-removing and dust-collecting system of the bag-type air dust collector as claimed in claim 5, wherein the spiral air guiding structure comprises a spiral air guiding plate, and a spiral cyclone channel is formed between the air guiding plate and the inner wall of the upper air hopper, the inner wall of the lower air hopper and the outer wall of the air guiding cylinder respectively.
7. The front dust-collecting system of the bag-type air dust collector of claim 6, wherein the inner walls of the upper air hopper and the lower air hopper and the upper surface of the air deflector are provided with elastic material layers.
8. The front dust-collecting and ash-collecting system of the bag-type air dust collector of claim 5, wherein the spiral wind-guiding structure comprises spiral wind-guiding grooves arranged on the inner walls of the upper wind hopper and the lower wind hopper.
9. The front dust collecting system of the bag-type air dust collector of any one of claims 1 to 8, wherein vibration motors are arranged on the outer side walls of the upper air hopper and the lower air hopper.
10. The front dust collecting system of the bag-type air dust collector of claim 9, wherein an air flow buffer bin is further disposed between the air inlet pipe and the air inlet cylinder, and one side surface of the air flow buffer bin is adapted to the outer wall of the air inlet cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010169839.3A CN111467884A (en) | 2020-03-12 | 2020-03-12 | Front dust removal and collection system of cloth bag type air dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010169839.3A CN111467884A (en) | 2020-03-12 | 2020-03-12 | Front dust removal and collection system of cloth bag type air dust collector |
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| CN111467884A true CN111467884A (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010169839.3A Pending CN111467884A (en) | 2020-03-12 | 2020-03-12 | Front dust removal and collection system of cloth bag type air dust collector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112044186A (en) * | 2020-08-30 | 2020-12-08 | 陈景花 | Bag type dust collector for industrial environmental protection dust removal |
| CN112066506A (en) * | 2020-09-04 | 2020-12-11 | 汪茂学 | Ventilation and dust removal system for high-rise building |
| CN112704981A (en) * | 2020-12-04 | 2021-04-27 | 安徽华创环保设备科技有限公司 | Aluminum dust collector for preventing cross contamination of medicinal powder and using method thereof |
| CN113634050A (en) * | 2021-08-26 | 2021-11-12 | 广东新氧器净化科技有限公司 | Cyclone collision dust removal pretreatment device |
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| CN112704981A (en) * | 2020-12-04 | 2021-04-27 | 安徽华创环保设备科技有限公司 | Aluminum dust collector for preventing cross contamination of medicinal powder and using method thereof |
| CN113634050A (en) * | 2021-08-26 | 2021-11-12 | 广东新氧器净化科技有限公司 | Cyclone collision dust removal pretreatment device |
| CN113634050B (en) * | 2021-08-26 | 2023-04-07 | 广东新氧器净化科技有限公司 | Cyclone collision dust removal pretreatment device |
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Application publication date: 20200731 |