CN107339243B - Combustion-supporting fan capable of automatically cleaning filter screen - Google Patents
Combustion-supporting fan capable of automatically cleaning filter screen Download PDFInfo
- Publication number
- CN107339243B CN107339243B CN201710471223.XA CN201710471223A CN107339243B CN 107339243 B CN107339243 B CN 107339243B CN 201710471223 A CN201710471223 A CN 201710471223A CN 107339243 B CN107339243 B CN 107339243B
- Authority
- CN
- China
- Prior art keywords
- air inlet
- filter screen
- inlet channel
- nozzle
- combustion
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2267/00—Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
- B01D2267/30—Same type of filters
Abstract
The invention relates to a combustion-supporting fan capable of automatically cleaning a filter screen, and belongs to the technical field of fan equipment. The air inlet device consists of a left part and a right part which are symmetrically arranged at two sides of a fan and have the same structure, wherein each part comprises an air inlet channel, a filter screen, a baffle plate, an air cylinder connecting rod mechanism, a nozzle and a water supply pipeline connected with the nozzle, wherein the filter screen, the baffle plate and the air cylinder connecting rod mechanism are arranged at the front end of the air inlet channel; the baffle is positioned in the air inlet and is rotationally connected with two opposite side walls of the air inlet through rotating shafts fixed on two opposite sides of the baffle; the cylinder connecting rod mechanism is connected with the PLC control system, and the connecting rod is fixedly connected with the rotating shaft; the nozzle is positioned in the air inlet passage, and the water spraying direction of the nozzle faces the outside of the filter screen. The invention realizes the online automatic cleaning of the filter screen when the combustion fan operates, reduces the labor intensity of workers, ensures the continuity of the temperature of the heating section of the cold rolling continuous annealing furnace and reduces the generation of degradation products; the invention has simple structure, low cost and strong practicability and has wide popularization and application prospect.
Description
Technical Field
The invention relates to a combustion-supporting fan capable of automatically cleaning a filter screen, and belongs to the technical field of fan equipment.
Background
The terminal fan is a fan in which an air inlet channel is directly contacted with the atmosphere, a filter screen is arranged at the front end of the air inlet channel, and air enters a pipeline through the filter screen at the front end of the air inlet channel under the drive of the fan to participate in the process control of combustion, drying and the like. A combustion-supporting fan used in a cold rolling production line of a metallurgical enterprise belongs to a terminal fan. The combustion-supporting fan of the cold rolling production line is positioned at the heating section of the continuous annealing furnace, the heating section can be divided into 7 or 14 areas according to the structure of the production line, each area is provided with one combustion-supporting fan, the main function is to provide power to suck air, mix the air with coal gas at a burner, and burn the air to heat the plate strip through ignition of an ignition rod so as to achieve the purpose of annealing the plate strip. In order to ensure the cleanliness of injected air, a filter screen is arranged at the air inlet duct of the combustion-supporting fan; in the actual production process, the time sequence is jumped and stopped due to the fact that the fluctuation of the combustion air flow is large in each area of the heating section, so that the heating temperature cannot meet the requirement, and degradation products are generated. The analytical reasons are that: firstly, the existing filter screen of the combustion-supporting fan is often blocked, the density of the material of the filter screen is very small for ensuring the filtering effect, the filter screen is easy to block, and the blocking of the filter screen is further aggravated by the poor environmental conditions on site; secondly, the filter screen cannot be cleaned on line, the existing combustion-supporting fan only has one air inlet channel, negative pressure is arranged in the combustion-supporting air pipeline, and if the filter screen at the top end of the air inlet channel is cleaned, the combustion-supporting fan must be stopped, so that the filter screen cleaning during the on-line operation of the fan cannot be realized; finally, each time the filter screen is cleaned, the combustion-supporting fans are required to be shut down, each combustion-supporting fan supplies combustion-supporting air to 30-42 burners in 6 layers of one zone of the heating section, after the combustion-supporting fans are shut down, the temperature of the heating section area is rapidly reduced, even if the combustion-supporting fans are immediately restored to the restarting time sequence after being shut down, a certain time is also required, the filter screen is cleaned each time, the temperature of the whole heating section is greatly fluctuated, and the phenomenon is more obvious in the production of high-strength steel. Therefore, how to realize the online cleaning of the filter screen of the terminal fan such as the combustion-supporting fan becomes urgent.
Disclosure of Invention
The invention aims to solve the technical problem of providing the combustion-supporting fan capable of automatically cleaning the filter screen, which can realize the automatic online cleaning of the filter screen when terminal fans such as the combustion-supporting fan and the like run, ensure the temperature continuity of a heating section and reduce the generation of degradation products.
The technical scheme for solving the technical problems is as follows:
a combustion-supporting fan capable of automatically cleaning a filter screen comprises a left part and a right part which are symmetrically arranged on two sides of the fan and have the same structure, wherein each part comprises an air inlet channel, the filter screen arranged at the front end of the air inlet channel, a baffle plate, a cylinder connecting rod mechanism, a nozzle and a water supply pipeline connected with the nozzle; the baffle is positioned in the air inlet and is rotationally connected with two opposite side walls of the air inlet through rotating shafts fixed on two opposite sides of the baffle; the cylinder connecting rod mechanism is connected with the PLC control system, and the connecting rod is fixedly connected with the rotating shaft; the nozzle is positioned in the air inlet passage, and the water spraying direction of the nozzle faces the outside of the filter screen.
According to the combustion-supporting fan capable of automatically cleaning the filter screen, the air inlet channel is formed by connecting the inclined section and the horizontal section, the front end of the inclined section is positioned below the horizontal section, the U-shaped slide ways are fixed on two opposite edges of the front end of the inclined section, and the filter screen is arranged in the U-shaped slide ways; the baffle is installed in the inside of horizontal segment, and the size of baffle and the inside cross section size phase-match of intake duct.
The combustion-supporting fan capable of automatically cleaning the filter screen is characterized in that the nozzle is positioned in the inclined section of the air inlet channel and close to the filter screen; the water supply pipeline is provided with a cleaning valve.
The combustion-supporting fan capable of automatically cleaning the filter screen further comprises a drainage groove positioned below the inclined section of the air inlet channel.
According to the invention, one air inlet channel is changed into two air inlet channels, the two air inlet channels are respectively arranged at two sides of the fan, the filter screens are arranged at the front ends of the inclined sections of the two air inlet channels, and enter and fix the filter screens through U-shaped slide ways at the upper side and the lower side of the air inlet channel, so that the installation and the disassembly are convenient; the double air inlets can be used for one time or simultaneously, when one side or two sides of the filter screen need to be cleaned, one side needs to be cleaned firstly, the operation of the other side is ensured, and the other side is cleaned after the operation is finished, so that the two sides are not allowed to be cleaned simultaneously; the baffle is positioned in the horizontal section of the air inlet channel and is connected with the air cylinder through the connecting rod, the air cylinder is controlled by the PLC, when the filter screen on one side needs to be cleaned, the air cylinder is controlled by the PLC, and the air cylinder pushes the connecting rod to move, so that the baffle rotates clockwise or anticlockwise, and the air inlet channel on the side is closed; then a cleaning valve is opened through a PLC control system, and the filter screen is subjected to water spraying cleaning through a nozzle; because the nozzle is located inside the inclined section of the air inlet channel and is close to the filter screen, and the front end position of the inclined section is lower than that of the horizontal section of the air inlet channel, water after cleaning can flow out from the filter screen to enter the drainage tank due to the action of gravity, and the water is prevented from entering the horizontal section of the air inlet channel to influence the work of the fan.
When the invention works, the air inlets on the two sides are used for one standby, the standby side is assumed to be the left side, the right side is normally operated, the left side is now changed from standby to operation, and the filter screen on the right side is cleaned. Firstly, a left baffle is opened through a PLC control system, so that a left air inlet channel is unblocked, and the left filter screen is ensured to be completely dried; the right baffle is closed through the PLC control system, the right cleaning valve is opened, the right filter screen is cleaned, the time is set to 15 minutes, the right cleaning valve is closed after the cleaning is completed, the right baffle is kept closed, the right filter screen is kept standing for more than 5 hours, the right filter screen can be turned into a standby state after the right filter screen is completely dried, and the left side and the right side are alternately performed.
The beneficial effects of the invention are as follows:
according to the invention, through the measures of changing the structure of the air inlet channel, adding the nozzle, the water supply pipeline and the like, the online automatic cleaning of the filter screen during the operation of the combustion-supporting fan is realized, the labor intensity of workers is reduced, the continuity of the temperature of the heating section of the cold rolling continuous annealing furnace is ensured, and the generation of degraded products is reduced; the design of U type slide has avoided among the prior art screw fixation filter screen to slide the silk easily and has led to the bolt to receive the problem of gravity rupture, and installation dismantlement is labour saving and time saving. The invention has simple structure, low cost and strong practicability and has wide popularization and application prospect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a view in the A-A direction of FIG. 1;
FIG. 3 is a schematic view of a U-shaped slide;
marked in the figure as: the air inlet channel 1, a filter screen 2, a baffle 3, an air cylinder 4, a connecting rod 5, a nozzle 6, a water supply pipeline 7, a rotating shaft 8, a U-shaped slideway 9, a cleaning valve 10, a drainage tank 11 and a fan 12.
Detailed Description
Fig. 1 to 3 show a combustion-supporting fan capable of automatically cleaning a filter screen, which is composed of a left part and a right part which are symmetrically arranged on two sides of a fan 12 and have the same structure, wherein each part comprises an air inlet channel 1, the filter screen 2, a baffle 3, a cylinder connecting rod mechanism composed of a cylinder 4 and a connecting rod 5, a nozzle 6, a water supply pipeline 7 connected with the nozzle 6, a cleaning valve 10 and a water drainage tank 11, wherein the cleaning valve 10 and the water drainage tank 11 are arranged on the water supply pipeline 7 and used for controlling water supply; the air inlet channel 1 is formed by connecting an inclined section and a horizontal section, the front end of the inclined section is positioned below the horizontal section, two opposite edges of the front end of the inclined section are fixed with U-shaped slide ways 9, and the filter screen 2 is arranged in the U-shaped slide ways 9; the baffle 3 is positioned in the horizontal section of the air inlet channel 1, the size of the baffle 3 is matched with the size of the cross section in the horizontal section of the air inlet channel 1, the left and right opposite sides of the baffle 3 are fixed with rotating shafts 8 which are perpendicular to the left and right sides and coaxial, and the rotating shafts 8 are rotationally connected with the left and right side walls of the horizontal section of the air inlet channel 1; the cylinder connecting rod mechanism is connected with the PLC control system, the connecting rod 5 is fixedly connected with the rotating shaft 8, and when the cylinder 5 acts, the connecting rod 5 can push the rotating shaft 8 to drive the baffle 3 to rotate, so that the air inlet channel 1 is closed or opened; in fig. 1 and fig. 2, 4 nozzles 6 are shown, a water supply pipeline 7 connected with the nozzles 6 penetrates through the side wall of the air inlet channel 1 and enters the air inlet channel 1, so that the nozzles 6 are positioned in the inclined section of the air inlet channel 1 and close to the filter screen 2, and the 4 nozzles 6 are arranged in a square shape, so that the water sprayed by the nozzles 6 can completely cover the area of the filter screen 2, and the cleaning effect is improved; the water spraying direction of the nozzle 6 faces the outside of the filter screen 2; the water drainage groove 11 is positioned below the inclined section of the air inlet channel 1 and is used for containing water liquid sprayed by the nozzle 6.
According to the invention, the number of the air inlet channels 1 in the prior art is changed from one to two, the two air inlet channels are respectively arranged at two sides of the fan 12, the filter screen 2 is arranged at the front ends of the inclined sections of the two air inlet channels 1, the filter screen 2 enters and is fixed through the U-shaped slide ways 9 at the upper side and the lower side of the air inlet channel 1, and the installation and the disassembly are convenient; the double air inlets can be used for one time or simultaneously, when one side or two sides of the filter screen 2 need to be cleaned, one side needs to be cleaned firstly, the operation of the other side is ensured, and the other side is cleaned after the operation is finished, so that the two sides are not allowed to be cleaned simultaneously; the baffle 3 is positioned in the horizontal section of the air inlet channel 1 and is connected with the air cylinder 4 through the connecting rod 5, the air cylinder 4 is controlled by the PLC, when a filter screen on one side needs to be cleaned, the air cylinder 4 is controlled by the PLC, and the air cylinder 4 pushes the connecting rod 5 to move, so that the baffle 3 rotates clockwise or anticlockwise, and the air inlet channel 1 on the side is closed; then the cleaning valve 10 is opened through the PLC control system, and the filter screen 2 is cleaned by spraying water through the nozzle 6; because the nozzle 6 is positioned in the inclined section of the air inlet channel 1 and is close to the filter screen 2, and the front end position of the inclined section is lower than the horizontal section of the air inlet channel 1, the cleaned water flows out of the filter screen 2 and enters the drainage groove 11 due to the action of gravity, so that the water is prevented from entering the horizontal section of the air inlet channel 1 to influence the work of the fan 12.
Claims (4)
1. A combustion-supporting fan capable of automatically cleaning a filter screen is characterized in that: the air inlet device consists of a left part and a right part which are symmetrically arranged at two sides of a fan (12) and have the same structure, wherein each part comprises an air inlet channel (1), a filter screen (2) arranged at the front end of the air inlet channel (1), a baffle (3), a cylinder connecting rod mechanism, a nozzle (6) and a water supply pipeline (7) connected with the nozzle (6); the baffle plate (3) is positioned in the air inlet channel (1) and is rotationally connected with two opposite side walls of the air inlet channel (1) through rotating shafts (8) fixed on two opposite sides of the baffle plate (3); the cylinder connecting rod mechanism is connected with the PLC control system, and the connecting rod (5) is fixedly connected with the rotating shaft (8); the nozzle (6) is positioned in the air inlet channel (1), and the water spraying direction of the nozzle (6) faces the outside of the filter screen (2); the air inlet channel (1) is formed by connecting an inclined section and a horizontal section, the front end of the inclined section is positioned below the horizontal section, U-shaped slide ways (9) are fixed on two opposite edges of the front end of the inclined section, and the filter screen (2) is arranged in the U-shaped slide ways (9); the nozzle (6) is positioned in the inclined section of the air inlet channel (1) and is close to the filter screen (2).
2. A combustion fan capable of automatically cleaning a filter screen as set forth in claim 1, wherein: the baffle (3) is arranged in the horizontal section, and the size of the baffle (3) is matched with the size of the internal cross section of the air inlet channel (1).
3. A combustion fan capable of automatically cleaning a filter screen as set forth in claim 1, wherein: the water supply pipeline (7) is provided with a cleaning valve (10).
4. A combustion fan capable of automatically cleaning a filter screen as in claim 1, 2 or 3, wherein: it also comprises a drainage groove (11) positioned below the inclined section of the air inlet channel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471223.XA CN107339243B (en) | 2017-06-20 | 2017-06-20 | Combustion-supporting fan capable of automatically cleaning filter screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471223.XA CN107339243B (en) | 2017-06-20 | 2017-06-20 | Combustion-supporting fan capable of automatically cleaning filter screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107339243A CN107339243A (en) | 2017-11-10 |
| CN107339243B true CN107339243B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710471223.XA Active CN107339243B (en) | 2017-06-20 | 2017-06-20 | Combustion-supporting fan capable of automatically cleaning filter screen |
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| Country | Link |
|---|---|
| CN (1) | CN107339243B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008101861A (en) * | 2006-10-20 | 2008-05-01 | Dai-Dan Co Ltd | Filter device installed in ventilation duct |
| CN202161863U (en) * | 2011-05-25 | 2012-03-14 | 杨光 | Automatic backwashing filter |
| CN102729452A (en) * | 2012-07-19 | 2012-10-17 | 浙江大学 | Automatic circulation screen filter device for blow-molding melt |
| CN103629811A (en) * | 2013-11-08 | 2014-03-12 | 中国人民解放军总后勤部建筑工程研究所 | Self-powered fuel oil fan heater |
| CN105617784A (en) * | 2015-12-30 | 2016-06-01 | 周桂灵 | Air filter |
| CN205823669U (en) * | 2016-05-24 | 2016-12-21 | 天津金宝丰风机制造有限公司 | A kind of there is noise reduction can the gas fan of on-line cleaning |
-
2017
- 2017-06-20 CN CN201710471223.XA patent/CN107339243B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008101861A (en) * | 2006-10-20 | 2008-05-01 | Dai-Dan Co Ltd | Filter device installed in ventilation duct |
| CN202161863U (en) * | 2011-05-25 | 2012-03-14 | 杨光 | Automatic backwashing filter |
| CN102729452A (en) * | 2012-07-19 | 2012-10-17 | 浙江大学 | Automatic circulation screen filter device for blow-molding melt |
| CN103629811A (en) * | 2013-11-08 | 2014-03-12 | 中国人民解放军总后勤部建筑工程研究所 | Self-powered fuel oil fan heater |
| CN105617784A (en) * | 2015-12-30 | 2016-06-01 | 周桂灵 | Air filter |
| CN205823669U (en) * | 2016-05-24 | 2016-12-21 | 天津金宝丰风机制造有限公司 | A kind of there is noise reduction can the gas fan of on-line cleaning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107339243A (en) | 2017-11-10 |
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