CN120420761A - Intelligent-control low-temperature denitration filter material filter bag equipment and control method thereof - Google Patents
Intelligent-control low-temperature denitration filter material filter bag equipment and control method thereofInfo
- Publication number
- CN120420761A CN120420761A CN202510932919.2A CN202510932919A CN120420761A CN 120420761 A CN120420761 A CN 120420761A CN 202510932919 A CN202510932919 A CN 202510932919A CN 120420761 A CN120420761 A CN 120420761A
- Authority
- CN
- China
- Prior art keywords
- filter bag
- ventilation plate
- exhaust gas
- sleeve member
- dust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
本发明公开了智能调控的低温脱硝滤料滤袋设备及其控制方法，涉及除尘滤袋技术领域。本发明设备包括基座、滤袋、废气注入管、第一传感器及套筒件，套筒件内设有引流扇、海绵蜂窝柱、静电杆等组件，通过进气区、注入区、出气区实现气流分级过滤，利用第一、第二传感器监测粉尘浓度，智能调节引流扇功率和静电杆电压强度，本发明设计了废气注入、浓度检测、吸尘过滤、堵塞判定及维护等步骤，通过智能调控提升过滤效率，延长堵塞周期，简化维护流程，减少设备停机时间，降低维护成本，延长滤袋使用寿命。
The present invention discloses an intelligently controlled low-temperature denitrification filter bag device and a control method thereof, relating to the technical field of dust removal filter bags. The device comprises a base, a filter bag, an exhaust gas injection pipe, a first sensor, and a sleeve member. The sleeve member is provided with components such as a drainage fan, a sponge honeycomb column, and an electrostatic rod. The device achieves graded airflow filtration through an air inlet, injection, and outlet zone. First and second sensors are used to monitor dust concentration, and the drainage fan power and electrostatic rod voltage intensity are intelligently adjusted. The device incorporates exhaust gas injection, concentration detection, dust collection and filtration, blockage determination, and maintenance steps. Through intelligent control, the device improves filtration efficiency, extends the blockage cycle, simplifies maintenance procedures, reduces equipment downtime, lowers maintenance costs, and extends the service life of the filter bags.
Description
Technical Field
The invention relates to the technical field of dedusting filter bags, in particular to intelligent-control low-temperature denitration filter material filter bag equipment and a control method thereof.
Background
In the industrial production process, the filter bag of the low-temperature denitration filter material is used as a core component of dust collection equipment and is widely applied to the field of waste gas treatment. However, in the use process of the existing low-temperature denitration filter material filter bag, if the filter bag frequently encounters high-concentration dust airflow, the following outstanding problems may occur:
Firstly, the inner side surface of the filter bag is easy to accumulate a large amount of dust, and when the filter bag is blocked, the filter bag needs to be stopped for cleaning. The disassembly and cleaning processes of the traditional filter bag are complicated, so that a large amount of labor and time are consumed, the equipment downtime is prolonged, the production efficiency is affected, and the maintenance cost of enterprises is increased.
Secondly, along with the continuous accumulation of dust in the filter bag, the filtration performance of the filter bag can gradually decline, and the dust concentration after the waste gas treatment is difficult to stably reach the standard, and the environmental protection effect is influenced.
In addition, frequent disassembly and cleaning can cause mechanical damage to the filter bag, and meanwhile, long-term dust accumulation can cause chemical corrosion or physical aging of the filter bag, so that the service life of the filter bag is further shortened.
In conclusion, the filter bag is reduced in frequent disassembly and cleaning, the service life and the filtering effect of the filter bag are guaranteed, and the filter bag becomes a technical problem to be solved.
Disclosure of Invention
In order to solve the technical problems, the invention is realized by the following technical scheme:
The utility model provides an intelligent regulation and control's low temperature denitration filter material filter bag equipment, including the base, the filter bag of base below is established to the cover, the base is equipped with the waste gas injection pipe with the filter bag intercommunication, the base disposes the first sensor that is used for surveying real-time dust concentration in the filter bag, the base still installs the inside sleeve piece of inserting the filter bag, sleeve piece bottom side fixed mounting chassis, chassis central point puts the configuration solenoid valve that admits air, the sleeve piece is interior to be disposed in proper order from bottom to top has drainage fan, lower locating frame, lower aeration board, sponge honeycomb post, go up aeration board, go up locating frame, sleeve piece top side disposes the top cap. The sleeve part comprises an air inlet area positioned between the drainage fans of the chassis, an injection area arranged on the inner periphery of the lower positioning frame and an air outlet area arranged on the inner periphery of the upper positioning frame.
The sponge honeycomb column is provided with a plurality of vertical airflow channels and slots which are distributed with the airflow channels in a staggered mode, wherein the injection area, the airflow channels and the air outlet area are vertically communicated, and each slot is provided with a plurality of expansion grooves along the vertical direction.
The bottom side of the upper ventilation plate is fixedly provided with a plurality of static rods, and the static rods are inserted into the slots. The sleeve member side plate is provided with an exhaust electromagnetic valve communicated with the air outlet area, and the top cover is provided with a second sensor for detecting the real-time dust concentration of the air outlet area.
As a preferable technical scheme of the device, the inner wall of the sleeve member is provided with a wire bundle groove, and the top cover is provided with a wire bundle wire-collecting head of an outward output line.
As a preferable technical scheme of the device, the bottom side of the lower positioning frame is abutted with the drainage fan, and the top side of the lower positioning frame is abutted with the lower ventilation plate. The bottom side of the upper positioning frame is abutted with the upper ventilation plate, and the top side of the upper positioning frame is abutted with the top cover.
As a preferred embodiment of the device according to the invention, the sponge pore size of the sponge honeycomb column is greater than the average size of the exhaust gas dust particles.
As a preferable technical scheme of the device, the electrostatic rod vertically passes through the slot, and the bottom surface of the electrostatic rod is abutted with the top surface of the lower ventilation slot.
As a preferable technical scheme of the device, a side opening is formed in a side plate of the sleeve member, and the exhaust electromagnetic valve is inserted in the position of the side opening. The exhaust solenoid valve is provided with a positioning ring, and the size of the positioning ring is larger than that of the side opening. And a positioning groove matched with the positioning ring is formed in one side plate of the upper positioning frame, and a vent hole for communicating the air outlet area with the exhaust electromagnetic valve is formed in the position of the positioning groove.
As a preferable technical scheme of the device, the bottom surface of the sponge honeycomb column is provided with a lower socket positioned at the bottom of the airflow channel, and the top surface of the sponge honeycomb column is provided with an upper socket positioned at the top of the airflow channel. The upper side of the lower ventilation plate is provided with a first tube head inserted in the position of the lower socket, the lower ventilation plate is provided with a first air hole vertically penetrating through the lower ventilation plate and the first tube head, and the bottom surface of the lower ventilation plate is provided with an air inlet wide mouth communicated with the first air hole. The lower side of the upper ventilation plate is provided with a second tube head inserted into the upper socket position, and the upper ventilation plate is provided with a second air hole vertically penetrating through the upper ventilation plate and the second tube head.
The invention provides a control method of low-temperature denitration filter material filter bag equipment, which comprises the following steps:
s1, injecting waste gas into the filter bag by the waste gas injection pipe.
S2, after the waste gas enters the filter bag, the first sensor detects dust concentration in the waste gas and records as C 1, if C 1>=C Standard of ,C Standard of is a preset reference value, a dust collection mode is started, namely an air inlet electromagnetic valve and an air outlet electromagnetic valve are opened, a drainage fan is started, and the real-time power P=P 0+Pc of the drainage fan is started. Wherein, P 0 is the basic power, the basic power P 0 is positively correlated with the rate of exhaust gas injection into the filter bag, and P c is the concentration difference power, the concentration difference power P c∝ΔC,ΔC=C1-C Standard of .
S3, enabling the air flow with the dust concentration exceeding the standard to enter an injection area through a drainage fan, and then entering an air flow channel of the sponge honeycomb column.
S4, electrifying the electrostatic rod, enabling dust in the airflow channel to move towards the electrostatic rod under the action of electrostatic adsorption force, enabling the dust to enter holes of the sponge honeycomb columns, and enabling part of the dust to enter the expansion groove around the electrostatic rod, wherein the voltage intensity U & ltdelta & gt C of the electrostatic rod.
S5, the air flow continues to enter the air outlet area upwards, the second sensor detects the concentration of the air flow dust in the air outlet area, the concentration is recorded as C 2, if the duration of the C 2>=C Standard of exceeds the preset duration of the system, the air inlet electromagnetic valve and the air outlet electromagnetic valve are judged to be blocked, the drainage fan is stopped, and the control system outputs corresponding prompt information.
S6, maintenance personnel disconnect the waste gas injection, clean or replace the sponge honeycomb column, and restart the waste gas injection and filtration operation.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention monitors the dust concentration in the filter bag and the air outlet area in real time through the first sensor and the second sensor, and intelligently adjusts the power of the drainage fan and the voltage intensity of the electrostatic rod according to the dust concentration. When the dust concentration exceeds the standard, the dust collection mode is automatically started, the filtering efficiency is improved, the dust concentration after waste gas treatment is ensured to reach the standard stably, and the intellectualization and the high efficiency of the filtering process are realized.
2. According to the invention, the sponge honeycomb column is provided with a plurality of vertical airflow channels, the slots which are staggered with the airflow channels, a plurality of expansion grooves which are arranged along the vertical direction of each slot, and other structures, so that the total amount of adsorbable dust of the sponge honeycomb column can be greatly increased, the blocking period of a filter bag is prolonged, the cleaning and replacement frequency of maintenance personnel is reduced, and the maintenance cost is reduced.
3. In the invention, when the holes of the sponge honeycomb column are judged to be blocked, maintenance personnel only need to disconnect the waste gas injection action, and after the bolts of the top cover are detached, the parts such as the top cover, the sleeve part and the like can be taken out, so that the sponge honeycomb column can be cleaned or replaced conveniently and rapidly, the equipment downtime is greatly shortened, and the production efficiency is improved.
In a word, the application can effectively reduce frequent disassembly and cleaning of the filter bag, avoid mechanical damage to the filter bag, reduce excessive accumulation of dust in the filter bag through intelligent regulation and control, and reduce chemical corrosion and physical aging speed of the filter bag, thereby prolonging the service life of the filter bag.
Drawings
Fig. 1 is a schematic view of the overall structure of the apparatus of the present invention.
Fig. 2 is a partially enlarged schematic view of the structure at a in fig. 1.
Fig. 3 is a partially enlarged schematic view of the structure at B in fig. 1.
FIG. 4 is a schematic view of the overall combination of a sleeve member and associated dust filter element of the present invention.
Fig. 5 is a bottom view of the device of fig. 4.
FIG. 6 is a schematic view of the sleeve member and associated dust filter element of the present invention shown disassembled.
Fig. 7 is a bottom view of the device of fig. 6.
Fig. 8 is a schematic view showing the disassembly of the sponge honeycomb column, the upper ventilation plate and the lower ventilation plate in the invention.
Fig. 9 is a bottom view of the device of fig. 8.
Fig. 10 is a schematic vertical cross-section of a sponge honeycomb of the present invention.
FIG. 11 is a schematic diagram of the structure of the upper positioning frame and the exhaust solenoid valve according to the present invention.
The device comprises a 1-base, a 2-filter bag, a 3-waste gas injection pipe, a 4-first sensor, a 5-sleeve piece, a 501-air inlet area, a 502-injection area, a 503-air outlet area, a 504-wire bundle groove, a 505-side opening, a 6-chassis, a 7-air inlet electromagnetic valve, an 8-drainage fan, a 9-lower positioning frame, a 10-lower ventilation plate, a 1001-first pipe head, a 1002-first air hole, a 1003-air inlet wide opening, an 11-sponge honeycomb column, 1101-air flow channels, 1102-slots, 1103-expansion grooves, 1104-lower sockets, 1105-upper sockets, 12-upper ventilation plates, 1201-second pipe heads, 1202-second air holes, 1203-static rods, 13-air outlet electromagnetic valves, 1301-positioning rings, 14-upper positioning frames, 1401-positioning grooves, 1402-ventilation openings, 15-top covers, 1501-wire bundle line concentration heads and 16-second sensors.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The first embodiment of the invention designs an intelligent-control low-temperature denitration filter material filter bag device, as shown in fig. 1, which mainly comprises a base 1, a filter bag 2, an exhaust gas injection pipe 3, a first sensor 4, a sleeve member 5, a chassis 6, an air inlet electromagnetic valve 7, a drainage fan 8, a lower positioning frame 9, a lower ventilation plate 10, a sponge honeycomb column 11, an upper ventilation plate 12, an exhaust electromagnetic valve 13, an upper positioning frame 14, a top cover 15, a second sensor 16 and other parts.
As shown in figure 1, a base 1 is used as a supporting main body of equipment, a sleeve member 5 is arranged on the upper side, a filter bag 2 is sleeved on the lower side, and an exhaust gas injection pipe 3 communicated with the filter bag 2 is arranged on the side surface and used for introducing exhaust gas to be treated. The base 1 is also provided with a first sensor 4 for detecting the dust concentration in the filter bag 2 in real time.
As shown in figure 1, the filter bag 2 is sleeved below the base 1 and is a place for preliminary filtering of waste gas, and dust particles are separated after the waste gas enters the filter bag 2 from the waste gas injection pipe 3.
As shown in fig. 1, 2, 3 and 4, the sleeve member 5is inserted into the filter bag 2 and is an installation carrier of the core filter assembly, and the inside of the sleeve member is sequentially provided with a drainage fan 8, a lower positioning frame 9, a lower ventilation plate 10, a sponge honeycomb column 11, an upper ventilation plate 12 and an upper positioning frame 14 from top to bottom, and the top of the sleeve member is closed by a top cover 15. The sleeve member 5is provided with side openings 505 on its side plates for mounting the exhaust solenoid valve 13. The inner wall of the sleeve member 5is provided with a wire bundle groove 504, and the top cover 15is provided with a wire bundle wire-collecting head 1501 for arranging and leading out internal circuits.
As shown in figure 1, the air inlet area 501 is positioned between the chassis 6 and the drainage fan 8, is communicated with the interior of the filter bag 2 through the air inlet electromagnetic valve 7 in the center of the chassis 6, and is an inlet for the out-of-standard dust air flow to enter the sleeve member 5.
As shown in fig. 1 and 2, the injection area 502 is formed by the inner periphery of the lower positioning frame 9, the bottom side of the lower positioning frame 9 is abutted against the drainage fan 8, and the top side is abutted against the lower ventilation plate 10 for guiding the air flow to enter the sponge honeycomb column 11.
As shown in fig. 1 and 3, the air outlet area 503 is formed by the inner periphery of the upper positioning frame 14, the bottom side of the upper positioning frame 14 is abutted against the upper ventilation plate 12, the top side is abutted against the top cover 15, and is an outlet of filtered air flow, and the top is provided with a second sensor 16 for detecting the dust concentration of the air area 503.
As shown in fig. 1,2,3 and 10, the sponge honeycomb column 11 is a core filtering component, and is provided with a plurality of vertical air flow channels 1101 and slots 1102 distributed in a staggered manner with the air flow channels 1101, wherein each slot 1102 is provided with a plurality of expansion grooves 1103 along the vertical direction. The bottom and top surfaces of the sponge honeycomb columns 11 are respectively provided with a lower socket 1104 and an upper socket 1105 for connection with the lower ventilation plate 10 and the upper ventilation plate 12.
As shown in fig. 1,2, 8, 9 and 10, the lower ventilation plate 10 has a wide inlet 1003 on the bottom side, a first tube head 1001 on the top surface, and a lower socket 1104 for inserting the sponge honeycomb column 11. The lower ventilation plate 10 is provided with a first air hole 1002 vertically penetrating therethrough, and is communicated with the air inlet wide opening 1003 and the first tube head 1001 for guiding air flow into the air flow channel 1101.
As shown in fig. 1, 3, 8, 9 and 10, the upper ventilation plate 12 has a second tube head 1201 at the bottom side and is inserted into the upper insertion opening 1105 of the sponge honeycomb column 11. The upper ventilation plate 12 is internally provided with a second air hole 1202 vertically penetrating through, and is communicated with the second pipe head 1201 and the air outlet area 503, and is used for guiding out filtered air flow. The bottom side of the upper ventilation plate 12 is also fixed with a plurality of static bars 1203, the static bars 1203 are inserted into the slots 1102, static adsorption dust is generated after the static bars 1203 vertically penetrate through the slots 1102, the bottom surface is abutted with the top surface of the lower ventilation plate 10, the installation stability is ensured, and meanwhile, the sponge honeycomb columns 11 are prevented from being extruded.
As shown in fig. 1, 5 and 6, an air inlet electromagnetic valve 7 is arranged in the center of the chassis 6 and used for controlling the communication state between the filter bag 2 and the air inlet area 501 of the sleeve member 5, and when the filter bag is opened, the air inlet electromagnetic valve is used for allowing the exceeding dust air flow to enter the sleeve member 5.
As shown in fig. 1, 4, 5, 6 and 11, the exhaust electromagnetic valve 13 is inserted into the side opening 505 of the sleeve member 5, provided with a positioning ring 1301 (the size is larger than that of the side opening 505), and is fixed in cooperation with the positioning groove 1401 of the side plate of the upper positioning frame 14, and the positioning groove 1401 is provided with a vent 1402, which is communicated with the air outlet area 503 and the exhaust electromagnetic valve 13 and is used for controlling the discharge of the filtered air flow.
The invention designs a control method of low-temperature denitration filter material filter bag equipment, and the specific control principle is as follows:
First, the exhaust gas injection pipe 3 injects exhaust gas into the filter bag 2.
After the exhaust gas enters the filter bag 2, the first sensor 4 detects the dust concentration in the exhaust gas, denoted as C 1.
If C 1≥C Standard of （C Standard of is a preset reference value), starting a dust collection mode:
The air inlet solenoid valve 7 and the air outlet solenoid valve 13 are opened, the drainage fan 8 is started, the real-time power P=P 0+Pc of the drainage fan 8 is started, wherein P 0 is basic power (the basic power P 0 is positively related to the speed of injecting the waste gas into the filter bag 2), and Pc is concentration difference power (concentration difference power P c∝ΔC,ΔC=C1-C Standard of ).
Then, the dust concentration exceeding air flow enters the injection region 502 through the flow guiding fan 8, and then enters the air flow passage 1101 of the sponge honeycomb 11.
At the same time, the electrostatic rod 1203 is energized, the dust in the air flow channel 1101 is subjected to electrostatic adsorption force, moves toward the electrostatic rod 1203, and enters the pores of the sponge honeycomb column 11, and part of the dust enters the expansion groove 1103 around the electrostatic rod 1203 (the structure can greatly increase the total amount of adsorbable dust of the sponge honeycomb column 11), wherein the voltage strength U ≡deltac of the electrostatic rod 1203.
Then, the dust airflow continues to enter the air outlet area 503 upwards, the second sensor 16 detects the dust concentration of the airflow in the air outlet area 503, and the dust concentration is recorded as C 2, if the duration of C 2≥C Standard of exceeds the preset duration (for example, 5 seconds) of the system, the hole blockage of the sponge honeycomb column 11 is judged, the air inlet electromagnetic valve 7 and the air outlet electromagnetic valve 13 are closed, the drainage fan 8 is stopped, and the control system outputs corresponding prompt information.
After the holes of the sponge honeycomb columns 11 are blocked, maintenance personnel disconnect the exhaust gas injection action, remove the bolts of the top cover 15, take out the top cover 15 and the sleeve piece 5, open the top cover 15, take out the upper positioning frame 14, take out the exhaust electromagnetic valve 13, take out the upper ventilation plate 12 and the sponge honeycomb columns 11, and clean the sponge honeycomb columns 11 or directly and quickly replace new sponge honeycomb columns 11.
And then the whole replaced assembly is installed again, and the exhaust gas injection and filtering operation is restarted.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510932919.2A CN120420761A (en) | 2025-07-08 | 2025-07-08 | Intelligent-control low-temperature denitration filter material filter bag equipment and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510932919.2A CN120420761A (en) | 2025-07-08 | 2025-07-08 | Intelligent-control low-temperature denitration filter material filter bag equipment and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN120420761A true CN120420761A (en) | 2025-08-05 |
Family
ID=96556267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202510932919.2A Pending CN120420761A (en) | 2025-07-08 | 2025-07-08 | Intelligent-control low-temperature denitration filter material filter bag equipment and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN120420761A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050229564A1 (en) * | 2002-08-05 | 2005-10-20 | Toshiaki Yamamoto | Exhaust gas treating apparatus |
| CN103447153A (en) * | 2013-07-29 | 2013-12-18 | 武汉龙净环保科技有限公司 | Electronic dust remover |
| CN106140472A (en) * | 2016-08-29 | 2016-11-23 | 四川环翔科技有限责任公司 | A kind of electrostatic air filtration structure of honeycomb texture |
| CN206996158U (en) * | 2017-04-22 | 2018-02-13 | 西安铁路职业技术学院 | A kind of electric automatization dust arrester |
| CN114377854A (en) * | 2022-01-24 | 2022-04-22 | 安徽天顺环保过滤材料有限公司 | Combined electrostatic dust collection filter bag for coal-fired boiler and implementation method thereof |
| CN222112156U (en) * | 2023-12-22 | 2024-12-06 | 安徽万纬工程管理有限责任公司 | A flue gas emission filtering device for heavy oil catalytic cracking |
-
2025
- 2025-07-08 CN CN202510932919.2A patent/CN120420761A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050229564A1 (en) * | 2002-08-05 | 2005-10-20 | Toshiaki Yamamoto | Exhaust gas treating apparatus |
| CN103447153A (en) * | 2013-07-29 | 2013-12-18 | 武汉龙净环保科技有限公司 | Electronic dust remover |
| CN106140472A (en) * | 2016-08-29 | 2016-11-23 | 四川环翔科技有限责任公司 | A kind of electrostatic air filtration structure of honeycomb texture |
| CN206996158U (en) * | 2017-04-22 | 2018-02-13 | 西安铁路职业技术学院 | A kind of electric automatization dust arrester |
| CN114377854A (en) * | 2022-01-24 | 2022-04-22 | 安徽天顺环保过滤材料有限公司 | Combined electrostatic dust collection filter bag for coal-fired boiler and implementation method thereof |
| CN222112156U (en) * | 2023-12-22 | 2024-12-06 | 安徽万纬工程管理有限责任公司 | A flue gas emission filtering device for heavy oil catalytic cracking |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101239841B1 (en) | White plume and odorous gas treatment module | |
| CN104676768A (en) | Air purifier with humidifying function | |
| CN119857319B (en) | Indoor exhaust treatment device | |
| CN120420761A (en) | Intelligent-control low-temperature denitration filter material filter bag equipment and control method thereof | |
| CN117065467A (en) | Cassette dry dust collector | |
| CN209840351U (en) | FFU air supply unit | |
| CN108981009B (en) | Intelligent fresh air purification system and fresh air purification treatment control method | |
| KR20150015194A (en) | Snap ring type bag filter combined diffuser | |
| CN220939406U (en) | Multiple filter equipment is used in municipal sewage treatment | |
| KR100845958B1 (en) | Filter fixing structure of dust collector | |
| KR101035379B1 (en) | Dust collector injection device | |
| CN219531106U (en) | Air purifying device | |
| CN102091486B (en) | Straight inserted bag-type air dust removal apparatus | |
| RU2209655C2 (en) | Cartridge filter | |
| CN205065907U (en) | air purifier | |
| CN211462427U (en) | Filter bag with similar elliptical cross section applied to urea granulation process | |
| CN212327686U (en) | Automatic dust removal equipment for flue gas treatment | |
| CN110917874B (en) | Air purifier | |
| KR101303266B1 (en) | Injector for dust collector | |
| JP2001269526A (en) | Dust collector | |
| KR100545265B1 (en) | Bag filter | |
| CN220900674U (en) | Dust collector in clean room | |
| CN204693638U (en) | With the air purifier of humidification function | |
| CN222480702U (en) | Air purifying device | |
| CN221548913U (en) | Environment-friendly indoor air purification device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |