CN103463889A - Off-line dedusting air door of self-pressing dedusting bag-type dust remover and dedusting method thereof - Google Patents
Off-line dedusting air door of self-pressing dedusting bag-type dust remover and dedusting method thereof Download PDFInfo
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- CN103463889A CN103463889A CN2013104583160A CN201310458316A CN103463889A CN 103463889 A CN103463889 A CN 103463889A CN 2013104583160 A CN2013104583160 A CN 2013104583160A CN 201310458316 A CN201310458316 A CN 201310458316A CN 103463889 A CN103463889 A CN 103463889A
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Abstract
The invention relates to an off-line dedusting air door of a self-pressing dedusting bag-type dust remover. A common pulse-jet bag dust collector is large in equipment size, and due to the fact that the dedusting airflow of the pulse-jet bag dust collector has large impact on a filter bag, the service life of the filter bag is short. Further, the common pulse-jet bag dust collector is large in occupied area, large in quantity of needed accessory equipment, high in construction cost and large in operation consumption. Being different from the fact that compressed air with normal temperature and normal oxygen content (21%) is adopted by the pulse-jet bag dust collector as a dedusting air source, purified smoke is adopted by the self-pressing back-flushing bag-type dust remover as a dedusting air source and is same with the smoke in the dust remover in temperature, and the oxygen content is also reduced greatly. The off-line dedusting air door of self-pressing dedusting bag-type dust remover comprises a door frame (7), a door shaft (2) is mounted in the middle of the door frame (7), door planks are mounted on the door shaft (2), the door planks comprise an upper door plank and a lower door plank, and a door shaft base (8) is mounted at the bottom end of the door shaft (2). The off-line dedusting air door of the self-pressing dedusting bag-type dust remover is used for controlling the opening and closing of a dedusting air channel.
Description
technical field:
the present invention relates to a kind of off-line ash-clearing air door and dust collection method thereof of self-pressure deashing sack cleaner.
background technology:
conventional pulse bag type dust collector, equipment volume is huge, and because pulse pocket type dust catcher deashing air-flow (pressure 80--600kpa) is larger to the impact of filter bag, the service life of filter bag is lower.And conventional sack cleaner floor space is large, needs the auxiliary device of use many, construction cost is high, operation energy consumption is large.
the general self-pressure back-blowing bag-type dust collector used now, adopted the outer filter mode of pulse bag type dust collector, carry out locellus self-pressure blowback off-line ash-clearing with the method that strengthens air compartment quantity, thereby reduced the deashing actual air volume, reduced the impact of deashing on systematic air flow.Due to the purifying smoke deashing that adopts the 2--3kpa pressure of only having an appointment, the deashing air-flow impacts less to filter bag.From pulse bag type dust collector, adopt the compressed air of normal temperature, normal oxygen content (21%) different as the deashing source of the gas, the self-pressure back-blowing bag-type dust collector is as the purifying smoke of deashing source of the gas, and with the flue gas isothermal in deduster, oxygen content also reduces (<7%) greatly.Improved dust removing effects, do not produced temperature difference dewfall, the filter bag protection is effective, the life-span is long.Simultaneously, use is evened up, the mode of stretching filter bag has significantly reduced the adhesive force of filter bag surface dust, has reduced the deashing power requirement, thereby has reduced operation energy consumption, has improved the service life of deduster.Energy resource consumption also greatly reduces.Therefore, the self-pressure back-blowing bag-type dust collector has promotional value.But, the discovery that is in operation, general self-pressure back-blowing bag-type dust collector has following several obvious shortcomings, has affected promoting the use of of self-pressure back-blowing bag-type dust collector.
these problems are mainly:
1. the back-blowing machinery device that deashing is used is fragile.The back-blowing of the general self-pressure back-blowing bag-type dust collector of use is to be stirred air door or controlled back-blowing position and air quantity by the telescopic air door by chain type now.Owing to containing the pernicious gas such as sulfur dioxide in the deduster flue gas, damages of easily getting rusty of back-blowing machinery device, cause that equipment breakdown takes place frequently, the deduster stoppage in transit.
2. seal is poor.Because chain type is stirred air door or the telescopic air door is all the mechanical device moved in orbit, need larger gap, therefore blowback air port seal is poor, inleakage is large, cause and please grey effect descend, in addition, because back-blowing is the port of export that draws the self-induced-air machine, leak out and caused partial circulating, increased the load of air-introduced machine, wasted energy and reduction equipment is exerted oneself.
3. the electric device fault rate is high.The chain type of general self-pressure back-blowing bag-type dust collector stirs air door or the telescopic air door is all the mechanical device moved in orbit, makes its supporting electric device under disadvantageous service condition, and easily generation accident, affect safe operation.
summary of the invention:
the object of the present invention is to provide a kind of off-line ash-clearing air door of self-pressure deashing sack cleaner.
the object of the present invention is achieved like this:
a kind of off-line ash-clearing air door of self-pressure deashing sack cleaner, its composition comprises: doorframe, in the middle of described doorframe, door-hinge is installed, on described door-hinge, door-plate is installed, described door-plate comprises door-plate, lower door-plate, described door-hinge bottom is equipped with the door-hinge seat.
the off-line ash-clearing air door of described self-pressure deashing sack cleaner, described doorframe is rectangle, and median septum is installed in the middle of described rectangle, in the middle of described median septum, has axis hole, upper ledge and the lower frame of described doorframe have axis hole.
the off-line ash-clearing air door of described self-pressure deashing sack cleaner, described door-hinge seat is cylindrical, described door-hinge seat upper surface is conical recess, and described door-hinge is arranged in the axis hole of described doorframe, and described door-hinge lower end assigns in the conical recess of described door-hinge seat.
the off-line ash-clearing air door of described self-pressure deashing sack cleaner, described door-plate is fixed on door-hinge by one group of snakelike pressing plate, described snakelike pressing plate is the rectangle steel plate, and described snakelike pressing plate is circular groove on centre position, and described circular groove two ends have through hole.
the off-line ash-clearing air door of described self-pressure deashing sack cleaner, cylinder axis is installed on described door-hinge top, and described door-hinge lower end is conical.
the off-line ash-clearing air door of described self-pressure deashing sack cleaner, the centre of described door-plate is circular groove, described circular groove two ends have one group of screw, on the surrounding of described door-plate, have screw.
the off-line ash-clearing air door of described self-pressure deashing sack cleaner, the rubber pressing plate is installed on the edges of boards of described door-plate, described rubber pressing plate is arranged on described door-plate by the rubber hold-down bolt, and heat-resisting acid-resisting rubber bar is installed between described rubber pressing plate and described door-plate.
the off-line ash-clearing air door of described self-pressure deashing sack cleaner, described upper door-plate connects the pure qi (oxygen) outlet of air-introduced machine, and described lower door-plate connects the air inlet flue, and described upper door-plate and described lower door-plate are 90 ° of angles and are arranged on described door-hinge.
the dust collection method that the off-line ash-clearing air door of described self-pressure deashing sack cleaner carries out, during the deduster normal operation, the air door of back-blowing wind passage mouth is in closed condition, the door opening of cloth bag locellus outlet, the normal dedusting of deduster, cloth bag dust stratification amount increase when deduster, when resistance is greater than design resistance, trigger the operating point of pneumatic operated valve, system is opened pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag locellus outlet simultaneously, each air compartment of deduster carries out respectively off-line ash-clearing, after reaching setting-up time, off-line ash-clearing is complete respectively for each air compartment, the air door of back-blowing wind passage mouth is closed successively, open the air door of cloth bag locellus outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.
beneficial effect:
1. the present invention reduces rotary resistance by door-hinge and door-hinge seat, and simple in structure, power consumption is little.
. the present invention is by using stainless steel to make door-hinge and door-hinge seat, corrosion-resistant in the time of wear-resisting, long service life, can be under the rugged environment of air channel long-term stable operation, reduce maintenance workload.
the present invention, by fixing high-temperature resistant rubber on the edge of door-plate, increases sealing property, and minimizing is leaked out, and improves ash-removal effect.
establish the bypass air flue on the sack cleaner that the present invention installs, prevent from smoking, burning out cloth bag when ignition of the boiler and baker, simultaneously again can on-bne repair, the method for operation is flexible, has improved equipment security of operation degree.
the accompanying drawing explanation:
accompanying drawing 1 is structural representation of the present invention.In figure, 1 is door-plate, and 2 is door-hinge, and 3 is the rubber hold-down bolt, and 4 is the rubber pressing plate, and 5 is the Heat-stable rubber strip, and 6 is snakelike pressing plate, and 7 is doorframe, and 8 is the door-hinge seat, and 9 is median septum, and 10 is bolt.
accompanying drawing 2 is A point partial enlarged drawings of accompanying drawing 1.In figure, 1 is door-plate, and 4 is the rubber pressing plate, and 5 is the Heat-stable rubber strip.
accompanying drawing 3 is structural representations of door-hinge 2 in accompanying drawing 1.
accompanying drawing 4 is structural representations of door-plate 1 in accompanying drawing 1.
accompanying drawing 5 is top views of accompanying drawing 4.
accompanying drawing 6 is structural representations of snakelike pressing plate 6 in accompanying drawing 1.
accompanying drawing 7 is top views of accompanying drawing 6.
accompanying drawing 8 is structural representations of doorframe 7 in accompanying drawing 1.
accompanying drawing 9 is top views of accompanying drawing 8.
accompanying drawing 10 is structural representations of door-hinge seat 8 in accompanying drawing 1.
the specific embodiment:
embodiment 1:
a kind of off-line ash-clearing air door of self-pressure deashing sack cleaner, its composition comprises: doorframe 7, in the middle of described doorframe 7, door-hinge 2 is installed, and on described door-hinge 2, door-plate is installed, described door-plate comprises door-plate, lower door-plate, and described door-hinge 2 bottoms are equipped with door-hinge seat 8.
embodiment 2:
according to the off-line ash-clearing air door of the described self-pressure deashing of embodiment 1 sack cleaner, described doorframe 7 is rectangle, and median septum 9 is installed in the middle of described rectangle, in the middle of described median septum 9, has axis hole, and upper ledge and the lower frame of described doorframe 7 have axis hole.
embodiment 3:
off-line ash-clearing air door according to the described self-pressure deashing of embodiment 1 or 2 sack cleaner, described door-hinge seat 8 is cylindrical, described door-hinge seat 8 upper surfaces are conical recess, described door-hinge 2 is arranged in the axis hole of described doorframe 7, and described door-hinge 2 lower ends assign in the conical recess of described door-hinge seat 8.
embodiment 4:
off-line ash-clearing air door according to the described self-pressure deashing of embodiment 1-3 sack cleaner, described door-plate 1 is fixed on door-hinge 2 by one group of snakelike pressing plate 6, described snakelike pressing plate 6 is the rectangle steel plate, described snakelike pressing plate is circular groove on 6 centre positions, and described circular groove two ends have through hole.
embodiment 5:
according to the off-line ash-clearing air door of the described self-pressure deashing of embodiment 1-4 sack cleaner, cylinder axis is installed on described door-hinge 2 tops, and described door-hinge lower end is conical.
embodiment 6:
according to the off-line ash-clearing air door of the described self-pressure deashing of embodiment 1-5 sack cleaner, the centre of described door-plate 1 is circular groove, and described circular groove two ends have one group of screw, on the surrounding of described door-plate 1, have screw.
embodiment 7:
off-line ash-clearing air door according to the described self-pressure deashing of embodiment 1-6 sack cleaner, rubber pressing plate 4 is installed on the edges of boards of described door-plate 1, described rubber pressing plate 4 is arranged on described door-plate 1 by rubber hold-down bolt 3, and heat-resisting acid-resisting rubber bar 5 is installed between described rubber pressing plate 4 and described door-plate 1.
embodiment 8:
off-line ash-clearing air door according to the described self-pressure deashing of embodiment 1-7 sack cleaner, described upper door-plate connects the pure qi (oxygen) outlet of air-introduced machine, described lower door-plate connects the air inlet flue, and described upper door-plate and described lower door-plate are 90 ° of angles and are arranged on described door-hinge 2.
embodiment 9:
the dust collection method that the off-line ash-clearing air door of the described self-pressure deashing of a kind of embodiment of utilization 1-8 sack cleaner carries out, during the deduster normal operation, the air door of back-blowing wind passage mouth is in closed condition, the door opening of cloth bag locellus outlet, the normal dedusting of deduster, cloth bag dust stratification amount increase when deduster, when resistance is greater than design resistance, trigger the operating point of pneumatic operated valve, system is opened pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag locellus outlet simultaneously, each air compartment of deduster carries out respectively off-line ash-clearing, after reaching setting-up time, off-line ash-clearing is complete respectively for each air compartment, the air door of back-blowing wind passage mouth is closed successively, open the air door of cloth bag locellus outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.
embodiment 10:
off-line ash-clearing air door according to the described self-pressure deashing of embodiment 1-9 sack cleaner, a back-blowing air channel is set separately when manufacturing sack cleaner, be connected with the pure qi (oxygen) outlet of deduster air-introduced machine, make to have all the time in the back-blowing air channel pure qi (oxygen) of 2kpa--3kpa pressure; In the outlet of each cloth bag locellus and back-blowing wind passage mouth, the air door that keeps out the wind is installed, and its edge of rubber seal Celsius more than 200 ℃ with heatproof, acid and alkali-resistance, can effectively prevent the air leakage phenomena generation; Two air doors that the off-line ash-clearing of self-pressure deashing sack cleaner is controlled are coaxial, it is the manufacture of the wear-resisting 316L of corrosion-resistant again type stainless steel that axle of the air door and axle bed adopt, the lower end of axle adopts thimble-type structure and the axle bed coupling of verge ring, reaches positioning function and reduces again rotary resistance.The upper end of axle of the air door stretches out in outside the deduster body, and a pneumatic operated valve is installed in the upper end of each axle of the air door, and the appendix of each pneumatic operated valve is connected with related system with electric controling line, two air doors are coaxial, its angle is 90 degree, during the deduster normal operation, the air door of back-blowing wind passage mouth is in closed condition, the door opening of cloth bag locellus outlet, the normal dedusting of deduster, cloth bag dust stratification amount increase when deduster, when resistance is greater than design resistance (1200pa left and right), trigger the operating point of pneumatic operated valve, system is opened pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag locellus outlet simultaneously, each air compartment of deduster carries out respectively off-line ash-clearing, after reaching setting-up time, off-line ash-clearing is complete respectively for each air compartment, the air door of back-blowing wind passage mouth is closed successively, open the air door of cloth bag locellus outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.
embodiment 11
off-line ash-clearing air door according to the described self-pressure deashing of embodiment 1-10 sack cleaner, major technique key point of the present invention is: two air doors that the off-line ash-clearing of self-pressure deashing sack cleaner is controlled are coaxial, axle of the air door and axle bed adopt 316L type stainless steel to manufacture, the lower end of axle adopts thimble-type structure and the axle bed coupling of verge ring, reaches positioning function and reduces again rotary resistance.The upper end of axle of the air door stretches out in outside the deduster body, a pneumatic operated valve is installed in the upper end of each axle of the air door, the appendix of each pneumatic operated valve is connected with related system with electric controling line, cloth bag dust stratification amount increase when deduster, when resistance is greater than design resistance, trigger the operating point of pneumatic operated valve, system is opened pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag locellus outlet simultaneously, each air compartment of deduster carries out respectively off-line ash-clearing, after reaching setting-up time, off-line ash-clearing is complete respectively for each air compartment, the air door of back-blowing wind passage mouth is closed successively, open the air door of cloth bag locellus outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.Thoroughly solved that the back-blowing machinery device that the general self-pressure back-blowing bag-type dust collector deashing of present use uses is fragile, the problems such as seal is poor, inleakage is large, electric device fault rate height, the fault rate that has greatly reduced deduster has improved again deduster equipment security of operation degree.
embodiment 12:
off-line ash-clearing air door according to the described self-pressure deashing of embodiment 1-11 sack cleaner, a back-blowing air channel is set separately when manufacturing sack cleaner, be connected with the pure qi (oxygen) outlet of deduster air-introduced machine, make to have all the time in the back-blowing air channel pure qi (oxygen) of 2kpa--3kpa pressure; In each cloth bag locellus outlet and back-blowing wind passage mouth, the air door (being the off-line ash-clearing air door of novel self-pressure deashing sack cleaner of the present invention) that keeps out the wind is installed, and its edge of rubber seal Celsius more than 200 ℃ with heatproof, acid and alkali-resistance, can effectively prevent that air leakage phenomena from occurring; Two air doors that the off-line ash-clearing of self-pressure deashing sack cleaner is controlled are coaxial, it is the manufacture of the wear-resisting 316L of corrosion-resistant again type stainless steel that axle of the air door and axle bed adopt, the lower end of axle adopts thimble-type structure and the axle bed coupling of verge ring, reaches positioning function and reduces again rotary resistance.The upper end of axle of the air door stretches out in outside the deduster body, and a pneumatic operated valve is installed in the upper end of each axle of the air door, and the appendix of each pneumatic operated valve is connected with related system with electric controling line, two air doors are coaxial, its angle of cut is 90 degree, during the deduster normal operation, the air door of back-blowing wind passage mouth is in closed condition, the door opening of cloth bag locellus outlet, the normal dedusting of deduster, cloth bag dust stratification amount increase when deduster, when resistance is greater than design resistance, trigger the operating point of pneumatic operated valve, system is opened pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag locellus outlet simultaneously, each air compartment of deduster carries out respectively off-line ash-clearing, after reaching setting-up time, off-line ash-clearing is complete respectively for each air compartment, the air door of back-blowing wind passage mouth is closed successively, open the air door of cloth bag locellus outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.
Claims (9)
1. the off-line ash-clearing air door of a self-pressure deashing sack cleaner, its composition comprises: doorframe is characterized in that: in the middle of described doorframe, door-hinge is installed, on described door-hinge, door-plate is installed, described door-plate comprises door-plate, lower door-plate, and described door-hinge bottom is equipped with the door-hinge seat.
2. the off-line ash-clearing air door of self-pressure deashing sack cleaner according to claim 1, it is characterized in that: described doorframe is rectangle, median septum is installed in the middle of described rectangle, in the middle of described median septum, has axis hole, upper ledge and the lower frame of described doorframe have axis hole.
3. the off-line ash-clearing air door of self-pressure deashing sack cleaner according to claim 1 and 2, it is characterized in that: described door-hinge seat is cylindrical, described door-hinge seat upper surface is conical recess, described door-hinge is arranged in the axis hole of described doorframe, and described door-hinge lower end assigns in the conical recess of described door-hinge seat.
4. according to the off-line ash-clearing air door of claim 1 or 2 or 3 described self-pressure deashing sack cleaners, it is characterized in that: described door-plate is fixed on door-hinge by one group of snakelike pressing plate, described snakelike pressing plate is the rectangle steel plate, described snakelike pressing plate is circular groove on centre position, and described circular groove two ends have through hole.
5. according to the off-line ash-clearing air door of claim 1 or 2 or 3 or 4 described self-pressure deashing sack cleaners, it is characterized in that: cylinder axis is installed on described door-hinge top, and described door-hinge lower end is conical.
6. according to claim 1 or 2 or the off-line ash-clearing air door of 3 or 4 or 5 described self-pressure deashing sack cleaners, it is characterized in that: the centre of described door-plate is circular groove, described circular groove two ends have one group of screw, on the surrounding of described door-plate, have screw.
7. according to claim 1 or 2 or 3 or the off-line ash-clearing air door of 4 or 5 or 6 described self-pressure deashing sack cleaners, it is characterized in that: the rubber pressing plate is installed on the edges of boards of described door-plate, described rubber pressing plate is arranged on described door-plate by the rubber hold-down bolt, and heat-resisting acid-resisting rubber bar is installed between described rubber pressing plate and described door-plate.
8. according to claim 1 or 2 or 3 or 4 or the off-line ash-clearing air door of 5 or 6 or 7 described self-pressure deashing sack cleaners, it is characterized in that: described upper door-plate connects the pure qi (oxygen) outlet of air-introduced machine, described lower door-plate connects the air inlet flue, and described upper door-plate and described lower door-plate are 90 ° of angles and are arranged on described door-hinge.
9. the dust collection method that the off-line ash-clearing air door that utilizes the described self-pressure deashing of one of claim 1-8 sack cleaner carries out, it is characterized in that: during the deduster normal operation, the air door of back-blowing wind passage mouth is in closed condition, the door opening of cloth bag locellus outlet, the normal dedusting of deduster, cloth bag dust stratification amount increase when deduster, when resistance is greater than design resistance, trigger the operating point of pneumatic operated valve, system is opened pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag locellus outlet simultaneously, each air compartment of deduster carries out respectively off-line ash-clearing, after reaching setting-up time, off-line ash-clearing is complete respectively for each air compartment, the air door of back-blowing wind passage mouth is closed successively, open the air door of cloth bag locellus outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310458316.0A CN103463889B (en) | 2013-10-01 | 2013-10-01 | The off-line ash-clearing air door of self-pressure deashing sack cleaner and dust collection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310458316.0A CN103463889B (en) | 2013-10-01 | 2013-10-01 | The off-line ash-clearing air door of self-pressure deashing sack cleaner and dust collection method thereof |
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| CN103463889A true CN103463889A (en) | 2013-12-25 |
| CN103463889B CN103463889B (en) | 2015-09-30 |
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| CN201768447U (en) * | 2010-07-14 | 2011-03-23 | 安徽省利特环保技术有限公司 | Valve for off-line dust cleaning device |
| CN202569834U (en) * | 2012-04-24 | 2012-12-05 | 包头市泽润机械设备有限责任公司 | Off-line device for long-bag low-pressure pulse bag-type dust remover |
| CN103007650A (en) * | 2012-12-18 | 2013-04-03 | 平安电气股份有限公司 | Revolving door three-way offline valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030041729A1 (en) * | 1999-12-29 | 2003-03-06 | Finigan Justin J. | Method and apparatus for cleaning filter bags of bag houses |
| CN2609640Y (en) * | 2003-03-29 | 2004-04-07 | 大连海顺收尘器厂 | Chambered back induced-draught bag type dust separator |
| CN201006382Y (en) * | 2007-02-16 | 2008-01-16 | 吉林安洁环保有限公司 | Low-pressure impulse bag-type collector with U-shaped sedimentation chamber and built-in by-pass air flue |
| CN201189428Y (en) * | 2008-05-08 | 2009-02-04 | 李忠大 | Forward and reverse quick switching device |
| CN201255240Y (en) * | 2008-08-07 | 2009-06-10 | 海宁洁宇环保设备有限公司 | Pneumatic off-line service valve for bag type dust collector |
| CN201342301Y (en) * | 2009-01-21 | 2009-11-11 | 无锡东雄重型电炉有限公司 | Flip horizontal multi-leaf type off-line valve |
| CN201768447U (en) * | 2010-07-14 | 2011-03-23 | 安徽省利特环保技术有限公司 | Valve for off-line dust cleaning device |
| CN202569834U (en) * | 2012-04-24 | 2012-12-05 | 包头市泽润机械设备有限责任公司 | Off-line device for long-bag low-pressure pulse bag-type dust remover |
| CN103007650A (en) * | 2012-12-18 | 2013-04-03 | 平安电气股份有限公司 | Revolving door three-way offline valve |
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| Publication number | Publication date |
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| CN103463889B (en) | 2015-09-30 |
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