CN109812875B - Replacement recirculation ventilation method - Google Patents
Replacement recirculation ventilation method Download PDFInfo
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- CN109812875B CN109812875B CN201711132204.0A CN201711132204A CN109812875B CN 109812875 B CN109812875 B CN 109812875B CN 201711132204 A CN201711132204 A CN 201711132204A CN 109812875 B CN109812875 B CN 109812875B
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Abstract
The invention relates to the technical field of dust removing equipment, in particular to a replacement type recirculation ventilation method. The main technical scheme is as follows: the polluted gas self-replacement type filtering ventilation unit is characterized in that an air inlet at the upper part of the polluted gas self-replacement type filtering ventilation unit is exhausted from an air supply outlet after the filtering action of a filter cylinder and the heat exchange action of meter cold air, and the polluted gas in a factory is lifted by the clean gas exhausted from the air supply outlet and enters the air inlet. The polluted gas self-replacement type filtering and ventilating unit comprises a shell, wherein a filter cylinder and a fan are fixed in the shell, an air inlet is formed in the upper portion of the shell, and an air supply outlet is formed in the lower portion of the shell. The invention provides a replacement type recirculation ventilation method, which realizes the airflow organization function of replacement type air purification ventilation which can be achieved by a large centralized system, and has low one-time investment and low operation cost.
Description
Technical Field
The invention relates to a replacement type recirculation ventilation method, and belongs to the technical field of dust removal equipment.
Background
With the development of new technology and new process, dust pollutants are converted from the past large amount of dust fall to the more and more difficult-to-treat exhaust dust, and the dense and large amount of 0.1-2.0 μm small-particle-size polluted dust and aerosol generated by the processes of a plurality of industrial enterprises also bring environmental pollution problems in the factory boundaries of the industrial enterprises and the industrial buildings, such as smoke pollution, chemical pollution and pollution of other various toxic and harmful gases in the environment in the factory buildings. These contaminations seriously affect and harm the health of the practitioner and can lead to various disease risks and even life-threatening risks. The serious pollution results already cause the problems of medical burden and insufficient staff for a large number of enterprises, and the production is seriously influenced; the dust pollution thing of exhaling in the factory building leaks through door and window and ventilates to discharge and causes huge negative effects to surrounding environment air PM2.5 again, and traditional industrial enterprise's ventilation mode mainly by following several:
and (one) a natural ventilation mode using a roof ventilator.
The disadvantages are as follows: when the pollutant emission amount is higher, the requirement of air exchange times cannot be met. The heating buildings in winter have great heat loss, so that natural ventilation can not be realized in winter.
And (II) mechanically exhausting air by using a roof ventilator.
The disadvantages are as follows: the dust-exhaling aerosol accumulation height is usually below 6.5m, the roof ventilation of a building with the height of more than 8m cannot solve the problem of the lifting and air exchange of dust-exhaling pollutants in a working area, and a heating energy source is wasted greatly and cannot guarantee the heating effect aiming at the heating area in the north in winter, so that the dust-exhaling aerosol accumulation height cannot be opened for use in winter.
And thirdly, a large pipeline ventilation system is additionally arranged for forced circulation, filtration and ventilation.
The disadvantages are as follows: the huge exhaust system collects and filters polluted air in each workspace in a centralized manner, and the polluted air is uniformly delivered to the workspace through the huge air supply system, 75% of the energy of the fan is used for conveying air flow back and forth to cause a large amount of energy consumption, and more because the air duct system is limited by the structure, a lot of exhaust and air supply blind areas, namely uncontrollable polluted areas, exist. In addition, large area centralized control is more costly for small scale production or overtime ventilation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a replacement type recirculation ventilation method, which realizes the airflow organization function of replacement type air purification ventilation which can be achieved by a large centralized system.
The technical scheme of the invention is as follows: the displacement type recirculation ventilation method is characterized in that polluted gas is discharged from an air supply outlet after the filtering action of a filter cartridge and the heat exchange action of a surface air cooler are carried out on an air inlet at the upper part of a displacement type filtering ventilation unit, and the polluted gas in a factory is lifted by clean gas discharged from the air supply outlet to move upwards to enter the air inlet.
Furthermore, the replaceable filtering and ventilating unit comprises a shell, a filter cylinder and a fan are fixed in the shell, an air inlet is formed in the upper portion of the shell, and an air supply outlet is formed in the lower portion of the shell.
Furthermore, the displacement type filtering and ventilating unit comprises a shell, a pollutant gas channel, a filter cylinder and a clean gas channel are arranged in the shell, an air inlet is formed in the upper part of the shell, and an air supply outlet is formed in the lower part of the shell; the filter cartridge is arranged on the inner side of the air inlet, the outlet of the filter cartridge is connected to the clean air channel, and the tail end of the clean air channel is connected to the air supply outlet. The pollutant gas channel is a channel between the shell and the filter cartridge and between the shell and the clean gas channel.
Further, the filter cartridge is opened downwards.
Furthermore, a back flushing system and a fan are arranged in the clean gas channel.
Furthermore, a confluence ejector pipe is arranged between the filter cylinder and the clean gas channel, the back-blowing system comprises a back-blowing air bag and a back-blowing pipe, the back-blowing pipe is provided with a jet orifice, and the jet orifice is positioned below the inner part of the confluence ejector pipe.
Furthermore, a pollutant runner module is arranged in the clean gas channel and consists of a pollutant runner module structure body and an outer box plate;
the pollutant flow channel module structure body comprises a saddle-shaped top plate and a side plate which are connected with each other, the side edge of the side plate is obliquely arranged and connected with an ash guide plate, and the bottom parts of the side plate and the ash guide plate are connected with an ash receiving groove; a back-blowing air bag is fixed inside the sharp corner of the saddle-shaped top plate, a back-blowing pipe is connected below the back-blowing air bag, and a surface air cooler and a fan are fixed between the side plates.
Furthermore, an ash collecting vehicle is arranged below the ash receiving groove.
Furthermore, the fan is a variable frequency fan.
Furthermore, a surface air cooler is arranged above the fan.
The invention has the following beneficial effects:
(1) the invention makes full use of the gas circulation process of the dust removal process, and clean gas is fed from the bottom of the plant, so that the polluted gas is lifted and discharged from the upper part, and the clean air and the polluted gas are not mixed in the process, thereby improving the dust removal and air exchange effects and achieving the purpose of energy conservation.
(2) When the circulating air volume is designed equivalently, the ventilation frequency of the invention is doubled compared with that of the traditional replacement ventilation method, namely if the traditional replacement ventilation reaches 2 times of ventilation, the invention can reach 4 times of ventilation frequency when the circulating air volume is the same, and the energy consumption is saved by more than 70 percent compared with that of the traditional replacement ventilation method because no power is transmitted; under the method for calculating the circulating air quantity of the same pollutant generation quantity, the circulating air quantity of the pollutant collected by arranging the air outlets at the proper height is 80% of the circulating air quantity of the air outlets arranged outside the safety distance of the overhead crane bridge on the top of a workshop, and the fan air quantity model selection parameter is reduced by 20%.
(3) The fresh air exchange device in the tall and large space has flexible fresh air arrangement, carries out high-efficiency energy conversion with the exhaust air, is mutually combined with the displacement type filtering and ventilating unit device to realize the non-blind area air supply and exhaust air flow organization of the whole workshop, and has the best purifying and ventilating effect. And the one-time investment is low, and the operation cost is low.
Drawings
FIG. 1 is a front view of a replacement filter ventilation unit;
FIG. 2 is a sectional view A-A of the front view of the replaceable filtering and ventilating unit when it is turned on;
FIG. 3 is a sectional view taken along line A-A of the front view of the replaceable filtering and ventilating unit when it is shut down or back blown;
FIG. 4 is a side view of a replacement filter ventilation unit;
FIG. 5 is a sectional view B-B of a side view of the replacement filter ventilation unit;
FIG. 6 is a cross-sectional view of a replacement filter ventilation unit converging eductor tube;
FIG. 7 is an S-directional view of FIG. 6;
FIG. 8 is a top view of a replacement filter ventilation unit;
FIG. 9 is a perspective view of a replacement filter and vent unit;
FIG. 10 is a perspective view of a contaminant flow channel module;
FIG. 11 is a partial schematic view of a contaminant flow channel module 1;
FIG. 12 is a partial schematic view of a contaminant flow channel module 2;
FIG. 13 is a front view of a contaminant flow channel module;
FIG. 14 is a side view of a contaminant flow channel module;
FIG. 15 is a cross-sectional view taken along line C-C of FIG. 14;
FIG. 16 is a top view of a contaminant flow channel module;
FIG. 17 is a layout of the overall plant of the present invention;
FIG. 18 is a cross-sectional view of the overall plant of the present invention.
Wherein: 1. the device comprises a shell, 2, an air inlet, 3, a filter cylinder, 4, a confluence injection pipe, 5, a back-blowing air bag, 6, a back-blowing pipe, 7, a surface air cooler, 8, a fan, 9, an air supply outlet, 10, an ash collecting vehicle, 11, a jet orifice, 12, a vibration ash remover, 13, an outer box plate, 14, a pollutant flow channel module structure body, 141, a saddle-shaped top plate, 142, a side plate, 143, an ash guide plate, 144, an ash receiving groove, 15, a fresh air exchange device, 16 and a displacement type filtering and ventilating unit.
Detailed Description
The invention will be further described with reference to the following detailed description and accompanying figures 1-18:
the displacement type recirculation ventilation method is characterized in that polluted gas is discharged from an air supply outlet 9 after being filtered by a filter cartridge 3 and subjected to heat exchange by a surface air cooler 7 from an air inlet 2 at the upper part of a displacement type filtering ventilation unit 16, and the polluted gas in a factory building is lifted by clean gas discharged from the air supply outlet 9 to move upwards to enter the air inlet 2. The displacement type filtering and ventilating unit 16 comprises a shell 1, a pollutant gas channel, a filter cartridge 3 and a clean gas channel are arranged in the shell 1, an air inlet 2 is arranged at the upper part of the shell 1, and an air supply outlet 9 is arranged at the lower part of the shell; the filter cartridge 3 is arranged at the inner side of the air inlet 2, the outlet of the filter cartridge 3 is connected to a clean air channel, and the tail end of the clean air channel is connected to the air supply outlet 9. The filter cartridge 3 is open downwards. A back flushing system and a fan 8 are arranged in the clean gas channel. A confluence ejector pipe 4 is arranged between the filter cartridge 3 and the clean gas channel, the back-blowing system comprises a back-blowing air bag 5 and a back-blowing pipe 6, the back-blowing pipe 6 is provided with a jet orifice 11, and the jet orifice 11 is positioned below the inner part of the confluence ejector pipe 4. A pollutant runner module is arranged in the clean gas channel and consists of a pollutant runner module structure body 14 and an outer box plate 13; the pollutant flow channel module structure body 14 comprises a saddle-shaped top plate 141 and a side plate 142 which are connected with each other, the side edge of the side plate 142 is obliquely arranged and connected with an ash guide plate 143, and the bottom parts of the side plate 142 and the ash guide plate 143 are connected with an ash receiving groove 144; a back-blowing air bag 5 is fixed in the sharp corner of the saddle-shaped top plate 141, a back-blowing pipe 6 is connected below the back-blowing air bag 5, and a surface cooler 7 and a fan 8 are fixed between the side plates 142. The dust collecting vehicle 10 is arranged below the dust collecting groove 144. The fan 8 is a variable frequency fan. And a surface cooler 7 is arranged above the fan 8. And a vibration ash remover 12 is arranged in the gas channel of the pollutant flow channel module.
When the device is in operation, a negative pressure area can be formed in the cavity of the device by the operation of the fan 8, air to be purified in a welding factory building is continuously collected and sucked into the device, airflow firstly enters the cavity of the device through the air return type self-hanging shutter, part of pollutant dust hits the air return type self-hanging shutter and directly falls into the dust guide groove 144, the other part of pollutant dust is filtered through the filter cartridge 3, dust particles and welding smoke dust are blocked or adsorbed on the surface of a coating film outside the filter cartridge 3, the filtering efficiency of the filter cartridge 3 on the dust with the particle size of more than 0.3 mu m is more than 99.9%, clean air entering the clean area is subjected to heat and moisture exchange with freezing (heating) circulating water in the surface air cooler 7 through the confluence injection pipe 4, and the surface air cooler 7 is subjected to cooling and dehumidifying (or heating) treatment and then is uniformly sent to the factory building area through the replacement air supply opening 9.
When the equipment runs for a period of time, a lot of dust can be attached to the outer wall of the filter cartridge 3, the front-back pressure difference of the filter cartridge 3 increases the power consumption, then the back-blowing system is automatically started to back-blow and clean the filter cartridge 3, the back-blowing system mainly comprises a back-blowing air bag 5 and a back-blowing pipe 6, when back blowing is executed, the system can control an electromagnetic valve on the back-blowing air bag 5 to open, because compressed air with the pressure of 0.5-0.6MPa is stored in the back-blowing air bag 5, the back-blowing air can be ejected from an ejection opening 11 of the back-blowing pipe 6 at supersonic speed, when flowing through a converging injection pipe 4 with Venturi effect, a large amount of air flow can be ejected into the converging injection pipe 4 and is accelerated to be diffused into a cavity of the filter cartridge 3 to form air flow impact and vibration on the filter cartridge 3, part of the air can be ejected reversely (from the inside of the filter cartridge to the outside), and the impact and vibration of the air, the ash falls on the ash guide plate 143 and slides into the two side joint ash grooves 144, thereby achieving the purpose of ash removal; at this time, the air return type self-hanging shutter installed at the air inlet 2 of the equipment can completely shield reverse airflow to prevent dust from leaking out and spraying out of the unit equipment. The cleaned dust is converged through two sides of the unit equipment and falls into the dust receiving groove 144, and finally is collected into the dust collecting vehicle 10 at the bottom of the unit equipment, and the dust collecting vehicle 10 is arranged on the ground right below the replacement type filtering and ventilating unit device and can be sealed mechanically or poured electrically.
The replacement type filtering and ventilating unit 16 of the invention does not need to design a large number of vertically and horizontally crossing factory building air supply and exhaust pipelines in the workshop ventilating system scheme to connect the air outlet, the dust removal ventilating unit and the air supply barrel, and the distribution of the air flow organization can be realized only by installing the replacement type filtering and ventilating unit 16 at the locally required position. The replacement type filtering ventilation unit 16 can realize group control and high-efficiency collection of smoke dust in a high-concentration area (area with proper height) accumulated by welding smoke dust, and can supply air at the upstream of a local welding smoke dust generation point, thereby realizing the purpose of lifting pollutants.
The number of cartridges of the present invention may be odd or even and may be vertical, inclined or transverse.
The above-mentioned embodiments are only used for explaining the inventive concept of the present invention, and do not limit the protection of the claims of the present invention, and any insubstantial modifications of the present invention using this concept shall fall within the protection scope of the present invention.
Claims (5)
1. The displacement type recirculation ventilation method is characterized in that polluted gas is discharged from an air supply outlet (9) after being filtered by a filter cartridge (3) and subjected to heat exchange by a surface air cooler (7) from an air inlet (2) at the upper part of a displacement type filtering ventilation unit (16), and the polluted gas in a factory building is lifted by clean gas discharged from the air supply outlet (9) to move upwards to enter the air inlet (2);
the displacement type filtering and ventilating unit (16) comprises a shell (1), a pollutant gas channel, a filter cartridge (3) and a clean gas channel are arranged in the shell (1), an air inlet (2) is formed in the upper part of the shell (1), and an air supply outlet (9) is formed in the lower part of the shell (1); the filter cartridge (3) is arranged on the inner side of the air inlet (2), the outlet of the filter cartridge (3) is connected to a clean air channel, and the tail end of the clean air channel is connected to an air supply outlet (9);
the filter cartridge (3) is opened downwards;
a back flushing system and a fan (8) are arranged in the clean gas channel;
a confluence ejector pipe (4) is arranged between the filter cartridge (3) and the clean gas channel, the back-blowing system comprises a back-blowing air bag (5) and a back-blowing pipe (6), the back-blowing pipe (6) is provided with a jet orifice (11), and the jet orifice (11) is positioned below the inner part of the confluence ejector pipe (4);
a pollutant flow channel module is arranged in the clean gas channel and consists of a pollutant flow channel module structure body (14) and an outer box plate (13);
the pollutant flow channel module structure body (14) comprises a saddle-shaped top plate (141) and a side plate (142) which are connected with each other, the side edge of the side plate (142) is obliquely arranged and connected with an ash guide plate (143), and the bottom parts of the side plate (142) and the ash guide plate (143) are connected with an ash receiving groove (144); the novel sewage treatment device is characterized in that a back-blowing air bag (5) is fixed in the sharp corner of the saddle-shaped top plate (141), a back-blowing pipe (6) is connected to the lower portion of the back-blowing air bag (5), and a surface air cooler (7) and a fan (8) are fixed between the side plates (142).
2. The displacement recirculation ventilation method according to claim 1, characterized in that the displacement filtration ventilation unit (16) comprises a housing (1), the housing (1) is internally fixed with a filter cartridge (3) and a fan (8), the air inlet (2) is arranged at the upper part of the housing (1), and the air outlet (9) is arranged at the lower part of the housing (1).
3. The displacement recirculation ventilation method of claim 1, characterized in that a dust collection vehicle (10) is disposed below the dust collection tank (144).
4. A displacement recirculation ventilation method according to claim 1, characterized in that said fan (8) is a variable frequency fan.
5. A displacement recirculation ventilation method according to claim 1, characterized in that a surface cooler (7) is installed above the fan (8).
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| CN201711132204.0A CN109812875B (en) | 2017-11-15 | 2017-11-15 | Replacement recirculation ventilation method |
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| CN201711132204.0A CN109812875B (en) | 2017-11-15 | 2017-11-15 | Replacement recirculation ventilation method |
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| CN109812875A CN109812875A (en) | 2019-05-28 |
| CN109812875B true CN109812875B (en) | 2021-04-16 |
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| CN113446668A (en) * | 2021-07-30 | 2021-09-28 | 西安建筑科技大学 | Split type air conditioner indoor unit device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785024A (en) * | 2015-04-01 | 2015-07-22 | 成都易态科技有限公司 | Gas filtering device |
| CN204522576U (en) * | 2015-01-15 | 2015-08-05 | 凯天环保科技股份有限公司 | The dust entirety served back under a kind of administers all-in-one |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509265A (en) * | 2016-01-25 | 2016-04-20 | 福建海晟环境科技有限公司 | Intelligent ventilation, dust removal and purification system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204522576U (en) * | 2015-01-15 | 2015-08-05 | 凯天环保科技股份有限公司 | The dust entirety served back under a kind of administers all-in-one |
| CN104785024A (en) * | 2015-04-01 | 2015-07-22 | 成都易态科技有限公司 | Gas filtering device |
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| CB03 | Change of inventor or designer information |
Inventor after: Zheng Xiang Inventor after: Yao Weiguo Inventor after: Lin Hongzhu Inventor after: Caiyukun Inventor after: Zhao Xinxin Inventor after: Fu Mingzhi Inventor before: Yao Weiguo Inventor before: Zheng Xiang Inventor before: Lin Hongzhu Inventor before: Caiyukun Inventor before: Zhao Xinxin Inventor before: Fu Mingzhi |
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Effective date of registration: 20191127 Address after: 116600, Jinzhou New District, Liaoning, Dalian double D digital 3 Road No. 8 Applicant after: MEGAUNITY ENVIRONMENTAL SOLUTIONS CO.,LTD. Applicant after: Beijing Air Research heating and cooling equipment installation engineering technology Co.,Ltd. Address before: 116600, Jinzhou New District, Liaoning, Dalian double D digital 3 Road No. 8 Applicant before: MEGAUNITY ENVIRONMENTAL SOLUTIONS CO.,LTD. |
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Address after: Floor 4, No. 300, Dongxin Road, Xukou Town, Wuzhong District, Suzhou City, Jiangsu Province, 215156 Patentee after: Suzhou Zhaohe Air System Co.,Ltd. Patentee after: Beijing Air Research heating and cooling equipment installation engineering technology Co.,Ltd. Address before: 116600 No.8, digital3 Road, shuangd port, Jinzhou new district, Dalian City, Liaoning Province Patentee before: MEGAUNITY ENVIRONMENTAL SOLUTIONS CO.,LTD. Patentee before: Beijing Air Research heating and cooling equipment installation engineering technology Co.,Ltd. |
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