CN112370877A - Low-pressure-difference bag-type dust collector - Google Patents
Low-pressure-difference bag-type dust collector Download PDFInfo
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- CN112370877A CN112370877A CN202011223524.9A CN202011223524A CN112370877A CN 112370877 A CN112370877 A CN 112370877A CN 202011223524 A CN202011223524 A CN 202011223524A CN 112370877 A CN112370877 A CN 112370877A
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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
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
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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
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
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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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
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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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a low-pressure-difference bag-type dust collector which comprises a lower air duct, an air-distribution grid, an air duct bottom plate, a turning plate, a multifunctional baffle plate, an ash bucket, a bag, an air purifying chamber, a top cover, an injection pipe, an offline lifting valve group and an upper air duct, wherein the lower air duct is connected with the air-distribution grid; dusty gas meets the air distribution grid through the lower air duct, coarse particle dust in the dusty gas directly subsides after striking and falls through the air duct bottom plate landing ash bucket, and other air flows evenly get into the ash bucket through the air distribution grid, and dusty gas is filtered through the sack, and the outside is the dust, and inside is clean gas, and clean gas is through the air-purifying chamber, and off-line promotion valves flows through the upper air duct. The invention can greatly reduce the energy consumption of system operation and prolong the service life of the cloth bag by reducing the operation resistance of the dust remover in the use process of the dust remover. Meanwhile, the online maintenance function of the equipment is perfected.
Description
Technical Field
The invention belongs to the field of dust collectors in environmental management equipment, and particularly relates to a low-pressure-difference bag-type dust collector.
Background
With the rapid increase of national economy, in recent years, China has paid more and more attention to environmental protection, and the social requirement on environmental protection is higher and higher, and the development of economic construction inevitably has certain influence on the environment, wherein, dust pollution is an important cause of air pollution, and the waste gas discharged by factories contains a large amount of dust particles, which can cause serious pollution to the environment and needs dust removal by dust equipment.
The dust removing equipment is equipment for separating dust from flue gas to obtain clean air, and is used for controlling the pollution of particles discharged by a pollution source to the atmosphere and protecting the atmospheric environment. Most production type enterprises, dust collecting equipment is given first place to with the filtration formula dust remover, the sack cleaner is mostly the sack cleaner that prior art adopted, after the sack cleaner work a period, can accumulate a large amount of dusts on the sack, treat the dust accumulation when too much, just can influence the work efficiency of sack cleaner, in order to improve the work efficiency of sack cleaner, the staff need take off the sack and change, however, need whole equipment all to shut down, the production system that the company of taking supporting use needs to shut down, it is huge to shut down the expense.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the defects of the prior art, the invention provides a low-pressure-difference bag-type dust collector.
The technical scheme is as follows: a low-pressure-difference bag-type dust collector comprises a lower air duct, a cloth air grid, an air duct bottom plate, a turning plate, a multifunctional baffle, an ash bucket, a bag, an air purifying chamber, a top cover, a blowing pipe, an off-line lifting valve group and an upper air duct;
the lower air duct and the upper air duct jointly form the whole air duct, gas treatment chambers are fixedly arranged on two sides of the air duct, a plurality of cloth bags penetrating through the gas treatment chambers from top to bottom are arranged in the gas treatment chambers, a turning plate is arranged at the joint of the lower air duct and the gas treatment chambers at the bottom, an ash bucket is arranged at the bottom of the gas treatment chambers, a gas purification chamber is arranged at the top of the gas treatment chambers, a blowing pipe and an offline lifting valve group are arranged in the gas purification chamber, and a top cover is arranged at the top of the gas purification chamber;
the dust-containing gas meets the air distribution grid through the lower air duct, coarse particles in the dust-containing gas are settled after being impacted, the dust-containing gas slides off the dust hopper through the bottom plate of the air duct, the rest air flow uniformly enters the dust hopper through the air distribution grid, the dust-containing gas is filtered by the cloth bag, dust is arranged outside the dust-containing gas, clean gas is arranged inside the dust-containing gas, and the clean gas flows out through the air purifying chamber and the off-line lifting valve group through the upper air duct;
when air flow enters the ash bucket, a turning plate is matched, the turning plate is linked with an offline lifting valve group at the top, the turning plate is automatically opened and closed in the direction of air flow pressure in equipment, and the turning plate is opened in the direction of air flow when the offline lifting valve group is opened due to the fact that negative pressure of the equipment comes from an induced draft fan connected behind an upper air duct; when the off-line lifting valve group is closed, no air flow moves in the corresponding box chamber, the turning plate is closed under the self gravity, the top cover is opened at the moment, the corresponding cloth bag in the box chamber can be checked and replaced, when the top cover is opened, the part where the separating box chamber is directly connected with other box chambers is the off-line lifting valve group and the turning plate, the air flow pressure at the two parts is closing force at the moment, the closing can be ensured to be tighter, and the box chamber separation has safety guarantee;
when the ash is cleaned, high-pressure gas in the blowing pipe is blown into the cloth bag, external dust is forced to be removed away from the surface of the cloth bag and is settled to the ash bucket.
As an optimization: if the turning plate is lacked, all the box chambers are still communicated through the air channel after the off-line lifting valve group is closed, the negative pressure loss of the whole system can be caused by opening the top cover, the system is broken down, and the fault loss is generated by connecting the box chambers.
As an optimization: the air distribution grille has the function of air equalization, the arrangement angle of the grille is vertical to the air inlet direction, and coarse particle dust can impact the grille, so that the flow velocity of the part of dust is rapidly reduced, and the sedimentation effect is achieved.
As an optimization: the angle of the air duct bottom plate is more than 30 degrees, and coarse particle dust can smoothly enter the dust hopper.
As an optimization: the turnover plate and the surrounding structure form a flap valve, can be automatically opened and closed according to the size of wind pressure, does not need independent operation, and can adapt to high temperature.
As an optimization: the multifunctional baffle plate can play a role in guiding flow, controls the direction of air flow to be downward, protects the cloth bag from being washed away, and prolongs the service life of the cloth bag. And the dust falling by blowing can be prevented from falling to the air port to form secondary dust raising, and the dust removal load is reduced.
As an optimization: when the airflow of the lower air duct (1) enters the ash bucket (6), the space with a certain height of the section of the whole box chamber is an air inlet pipeline, the air inlet speed and the wind resistance at the position are both very small, and the dust-containing gas can be uniformly distributed to each cloth bag, so that the cloth bag dust removal efficiency is improved, and the service life is prolonged.
Has the advantages that: the low-pressure-difference bag-type dust collector is provided with the online maintenance automatic switch device, so that the box chamber can be independently offline in the using process of the dust collector, online maintenance is facilitated, the online maintenance function is completed, the manufacture is simple, and the failure rate is low. Although the design of this device is simple, but perfect separation case room, and the operation is especially simple and practical.
Drawings
FIG. 1 is a schematic front view of the structure of embodiment 1 of the present invention;
FIG. 2 is a schematic side view of the structure of embodiment 1 of the present invention;
FIG. 3 is a schematic top view of the structure of embodiment 1 of the present invention;
FIG. 4 is a partial schematic structural diagram I of embodiment 1 of the present invention;
FIG. 5 is a second partial schematic structural diagram of embodiment 1 of the present invention;
FIG. 6 is a schematic front view of the structure of embodiment 2 of the present invention;
FIG. 7 is a schematic side view of embodiment 2 of the present invention;
FIG. 8 is a schematic top view of the structure of embodiment 2 of the present invention;
FIG. 9 is a partial schematic structural diagram I of the embodiment 2 of the present invention;
fig. 10 is a partial structural schematic diagram of embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Specific example 1
The device is a low-pressure-difference bag-type dust collector which is provided with an online maintenance automatic switch device, can be used for independently offline a box chamber in the using process of the dust collector, is convenient for online maintenance, supplements and perfects the online maintenance function, and has simple manufacture and low failure rate.
As shown in fig. 1-5, the low pressure difference bag-type dust collector structurally comprises a lower air duct 1, an air-distribution grid 2, an air duct bottom plate 3, a turning plate 4, a multifunctional baffle plate 5, an ash bucket 6, a bag 7, an air purifying chamber 8, a top cover 9, an injection pipe 10, an off-line lifting valve group 11 and an upper air duct 12.
The lower air duct 1 is used for dust-containing gas to enter. The air distribution grille 2 has the function of air equalization, the arrangement angle of the grille is vertical to the air inlet direction, and coarse particle dust can impact the grille, so that the flow velocity of the part of dust is rapidly reduced, and the sedimentation effect is achieved. The angle of the air duct bottom plate 3 is more than 30 degrees, and coarse particle dust can smoothly enter the dust hopper. The turnover plate 4 and the surrounding structure form a flap valve which can be automatically opened and closed according to the size of wind pressure, does not need to be independently operated and can adapt to high temperature. The multifunctional baffle 5 can play a role in guiding flow, controls the direction of air flow to be downward, protects the cloth bag from being washed away, and prolongs the service life of the cloth bag. And the dust falling by blowing can be prevented from falling to the air port to form secondary dust raising, and the dust removal load is reduced. The dust hopper 6 is used for collecting dust. The cloth bag 7 filters dust, the outer part of the cloth bag adsorbs the dust, and the inner part of the cloth bag is clean gas. The box chamber of the air purifying chamber 8 is filled with clean gas filtered by a cloth bag. The top cover 9 is used for installing the cloth bag and opening when the cloth bag is disassembled and replaced. The blowing pipe 10 is used for cleaning dust. The off-line lifting valve group 11 is a control valve (a lifting valve and an electric shutter valve) for independently separating the dust remover box chamber from the working state. The upper air duct 12 is used for passing clean air into the subsequent process.
The lower air duct 1 and the upper air duct 12 jointly form a whole air duct, gas treatment chambers are fixedly mounted on two sides of the air duct, a plurality of cloth bags 7 which run through the gas treatment chambers from top to bottom are mounted in the gas treatment chambers, turning plates 4 are mounted at the joints of the lower air duct 1 and the gas treatment chambers, ash hoppers 6 are mounted at the bottoms of the gas treatment chambers, a gas purification chamber 8 is mounted at the top of the gas treatment chambers, a blowing pipe 10 and an offline lifting valve group 11 are mounted in the gas purification chamber 8, and a top cover 9 is arranged at the top of the gas purification chamber 8.
The dust-containing gas meets the air distribution grid 2 through the lower air duct 1, coarse particles in the dust-containing gas are settled after being impacted, the coarse particles slide down to the dust hopper through the air duct bottom plate 3, other air flows uniformly enter the dust hopper 6 through the air distribution grid 2, the abrasion of coarse particles to the cloth bag is particularly serious, the part directly settles and can greatly increase the service life of the dust removal cloth bag, the amount of dust entering the dust removal system can be greatly reduced, the load of the dust removal system is reduced, and the energy is saved.
When the air current gets into ash bucket 6, old-fashioned structure is the pipeline that contracts, and here wind speed windage can all be very big, and new construction design is that the space of whole case cross-section certain height is the intake stack, and the air inlet wind speed and the windage of here can all be very little, has so mated turning over board 4 for this reason, and simultaneously, turning over board 4 and the off-line lifting valve group 11 linkage at top.
The turning plate 4 is automatically opened and closed in the direction of the air flow pressure in the equipment, and the turning plate 4 is opened in the direction of the air flow when the offline lifting valve group 11 is opened because the negative pressure of the equipment comes from the induced draft fan connected behind the upper air duct 12; when the off-line lifting valve group 11 is closed, no air flow moves in the corresponding box chamber, the turning plate 4 is closed under the self gravity, and the top cover 9 is opened at the moment to check and replace the corresponding cloth bag 7 in the box chamber. When the top cover 9 is opened, the direct connection part of the separation box chamber and other box chambers is the offline lifting valve group 11 and the turning plate 4, and the air pressure at the two parts is closing force, so that the closing is ensured to be more compact, and the box chamber separation has more safety guarantee.
During normal operation, dirty gas filters through sack 7, and the outside is the dust, and inside is clean gas, and clean gas is through air-purifying chamber 8, off-line lifting valve group 11, upper airway 12 outflow.
During ash removal, high-pressure gas in the blowing pipe 10 is sprayed into the cloth bag 7, and external dust is forced to be removed away from the surface of the cloth bag and then is settled to the ash hopper 6.
The structure of the device can ensure that the air speed is stable, the wind resistance is small, and the negative pressure of dust filtration is small when the air flows through the cross section of each part in the system, so that the pressure difference of an upper air channel and a lower air channel of the equipment is small, and the stable requirements (mainly embodied as a negative pressure drainage state) of the front system and the rear system of the equipment are ensured. And a plurality of dust speed reduction settlement points are added on the structure, so that the dust removal load can be reduced. The fan energy consumption required for realizing the same effect is very small.
Specific example 2
As shown in fig. 6 to 10, the respective components of the device are identical to those of embodiment 1, and the device can be used at normal temperature, that is, at a low temperature, and electrically controlled, except that the flap 4 is replaced with the louver 4. When the temperature is too high, the use cannot be carried out for the following reasons: when the heat conduction device is used in a high-temperature working condition (more than 200 ℃) of the kiln tail, the environment temperature is high (about 60 ℃), electrical equipment, sealing elements and the like directly conduct heat with equipment associated with the interior of the equipment, the temperature exceeds 80 ℃, and the device is easy to damage and poor in stability.
The invention can greatly reduce the energy consumption of system operation and prolong the service life of the cloth bag by reducing the operation resistance of the dust remover in the use process of the dust remover. Meanwhile, the online maintenance function of the equipment is perfected.
Claims (7)
1. The utility model provides a low pressure difference sack cleaner which characterized in that: the device comprises a lower air duct (1), an air distribution grid (2), an air duct bottom plate (3), a turning plate (4), a multifunctional baffle plate (5), an ash bucket (6), a cloth bag (7), a gas purification chamber (8), a top cover (9), a blowing pipe (10), an offline lifting valve group (11) and an upper air duct (12);
the air conditioner is characterized in that the lower air duct (1) and the upper air duct (12) jointly form the whole air duct, gas treatment chambers are fixedly mounted on two sides of the air duct, a plurality of cloth bags (7) penetrating through the gas treatment chambers from top to bottom are mounted in the gas treatment chambers, turning plates (4) are mounted at the joints of the lower air duct (1) and the gas treatment chambers at the bottom, ash hoppers (6) are mounted at the bottoms of the gas treatment chambers, a gas purification chamber (8) is mounted at the top of the gas treatment chambers, a blowing pipe (10) and an offline lifting valve group (11) are mounted in the gas purification chamber (8), and top covers (9) are arranged at the tops of the gas purification chambers (8;
the dust-containing gas meets the air distribution grid (2) through the lower air duct (1), coarse particle dust in the dust-containing gas directly settles after being impacted, the dust falls off the dust hopper through the air duct bottom plate (3), other gas flows uniformly enter the dust hopper (6) through the air distribution grid (2), the dust-containing gas is filtered by the cloth bag (7), the dust is outside, the clean gas is inside, the clean gas passes through the air purifying chamber (8), the off-line lifting valve group (11) and flows out through the upper air duct (12);
when air flow enters the ash bucket (6), a turning plate (4) is matched, the turning plate (4) is linked with an offline lifting valve group (11) at the top, the turning plate (4) is automatically opened and closed through the air flow pressure direction in equipment, because the negative pressure of the equipment comes from an induced draft fan connected behind an upper air duct (12), when the offline lifting valve group (11) is opened, the turning plate (4) is opened through the air flow direction; when the off-line lifting valve group (11) is closed, no air flow moves in the corresponding box chamber, the turning plate (4) is closed under the self gravity, the corresponding cloth bag (7) in the box chamber can be checked and replaced by opening the top cover (9), when the top cover (9) is opened, the part where the separating box chamber is directly connected with other box chambers is the off-line lifting valve group (11) and the turning plate (4), the air flow pressure at the two parts is closing force, the closing can be ensured to be tighter, and the box chamber separation has safety guarantee;
during ash removal, high-pressure gas in the blowing pipe (10) is sprayed into the cloth bag (7), external dust is removed from the surface of the cloth bag under stress and is settled to the ash bucket (6).
2. The low pressure drop bag-type dust collector of claim 1, wherein: if the turning plate (4) is lacked, all the chambers are still communicated through the air channel after the off-line lifting valve group (11) is closed, the negative pressure of the whole system is lost when the top cover (9) is opened, the system is broken down, and fault loss is caused by connection.
3. The low pressure drop bag-type dust collector of claim 1, wherein: the air distribution grille (2) has the function of air equalization, the arrangement angle of the grille is vertical to the air inlet direction, and coarse particle dust can impact the grille, so that the flow velocity of the part of dust is rapidly reduced, and the sedimentation effect is achieved.
4. The low pressure drop bag-type dust collector of claim 1, wherein: the angle of the air duct bottom plate (3) is more than 30 degrees, and coarse particle dust can smoothly enter the dust hopper.
5. The low pressure drop bag-type dust collector of claim 1, wherein: the turnover plate (4) and the surrounding structure form a flap valve, can be automatically opened and closed according to the size of wind pressure, does not need to be independently operated, and can adapt to high temperature.
6. The low pressure drop bag-type dust collector of claim 1, wherein: the multifunctional baffle (5) can play a role in guiding flow, controls the direction of air flow to be downward, protects the cloth bag from being washed away, prolongs the service life of the cloth bag, can prevent dust falling by blowing from falling to an air port to form secondary dust raising, and reduces dust removal load.
7. The low pressure drop bag-type dust collector of claim 1, wherein: when the airflow of the lower air duct (1) enters the ash bucket (6), the space with a certain height of the section of the whole box chamber is an air inlet pipeline, the air inlet speed and the wind resistance at the position are both very small, and the dust-containing gas can be uniformly distributed to each cloth bag, so that the cloth bag dust removal efficiency is improved, and the service life is prolonged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011223524.9A CN112370877A (en) | 2020-11-05 | 2020-11-05 | Low-pressure-difference bag-type dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011223524.9A CN112370877A (en) | 2020-11-05 | 2020-11-05 | Low-pressure-difference bag-type dust collector |
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| Publication Number | Publication Date |
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| CN112370877A true CN112370877A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011223524.9A Pending CN112370877A (en) | 2020-11-05 | 2020-11-05 | Low-pressure-difference bag-type dust collector |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101422679A (en) * | 2008-11-21 | 2009-05-06 | 中冶焦耐工程技术有限公司 | Balance flap valve special for air-output changing dust removal system |
| CN201361501Y (en) * | 2008-12-30 | 2009-12-16 | 沈阳远大环境工程有限公司 | Anti-blockage low-resistance pulse dust collector |
| CN203736998U (en) * | 2014-01-21 | 2014-07-30 | 中材装备集团有限公司 | Bag dust filter special for grinding system |
-
2020
- 2020-11-05 CN CN202011223524.9A patent/CN112370877A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101422679A (en) * | 2008-11-21 | 2009-05-06 | 中冶焦耐工程技术有限公司 | Balance flap valve special for air-output changing dust removal system |
| CN201361501Y (en) * | 2008-12-30 | 2009-12-16 | 沈阳远大环境工程有限公司 | Anti-blockage low-resistance pulse dust collector |
| CN203736998U (en) * | 2014-01-21 | 2014-07-30 | 中材装备集团有限公司 | Bag dust filter special for grinding system |
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Application publication date: 20210219 |
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