CN103463889B - The off-line ash-clearing air door of self-pressure deashing sack cleaner and dust collection method thereof - Google Patents
The off-line ash-clearing air door of self-pressure deashing sack cleaner and dust collection method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of off-line ash-clearing air door of self-pressure deashing sack cleaner.Conventional pulse bag type dust collector, equipment volume is huge, and because pulse pocket type dust catcher deashing air-flow is comparatively large to the impact of filter bag, the service life of filter bag is lower.And the sack cleaner floor space of routine is large, need auxiliary device many, construction cost is high, operation energy consumption is large.Adopt the compressed air of normal temperature, normal oxygen content (21%) different as deashing source of the gas from pulse bag type dust collector, 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 greatly.The present invention's composition comprises: doorframe (7), and be provided with door-hinge (2) in the middle of described doorframe (7), described door-hinge (2) is provided with door-plate, and described door-plate comprises door-plate, lower door-plate, and described door-hinge (2) bottom is provided with door-hinge seat (8).The present invention is for controlling the opening and closing in deashing 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 comparatively large to the impact of filter bag, the service life of filter bag is lower.And the sack cleaner floor space of routine is large, need auxiliary device many, construction cost is high, operation energy consumption is large.
the general self-pressure back-blowing bag-type dust collector of present use, have employed the outer filter mode of pulse bag type dust collector, carry out locellus self-pressure blowback off-line ash-clearing with the method strengthening air compartment quantity, thus reduce deashing actual air volume, reduce the impact of deashing on systematic air flow.Owing to adopting the purifying smoke deashing of 2--3kpa pressure of only having an appointment, deashing air-flow impacts less to filter bag.Adopt the compressed air of normal temperature, normal oxygen content (21%) different as deashing source of the gas from pulse bag type dust collector, self-pressure back-blowing bag-type dust collector is as the purifying smoke of deashing source of the gas, with the flue gas isothermal in deduster, oxygen content also reduces (< 7%) greatly.Improve dust removing effects, do not produce temperature difference condensation, filter bag protected effect is good, the life-span is long.Meanwhile, with evening up, the mode of stretching filter bag significantly reduces the adhesive force of filter bag surface dust, reduces deashing power requirement, thus decreases operation energy consumption, improve the service life of deduster.Energy resource consumption also greatly reduces.Therefore, self-pressure back-blowing bag-type dust collector has promotional value.But be in operation discovery, general self-pressure back-blowing bag-type dust collector has following several obvious shortcoming, have impact on promoting the use of of self-pressure back-blowing bag-type dust collector.
these problems are mainly:
1. the back-blowing mechanical device of deashing is fragile.The back-blowing of the general self-pressure back-blowing bag-type dust collector of present use be stir air door by chain type or by telescopic air door to control back-blowing position and air quantity.Due in deduster flue gas containing the pernicious gas such as sulfur dioxide, back-blowing mechanical device easily gets rusty damages, causes equipment breakdown to take place frequently, deduster stoppage in transit.
seal is poor.Air door is stirred or telescopic air door is all the mechanical device moved in orbit due to chain type, need larger gap, therefore blowback air port seal is poor, inleakage is large, cause and please grey effect decline, in addition, because back-blowing is the port of export drawing self-induced-air machine, leaks out and cause partial circulating, not only add the load of air-introduced machine, waste energy but also reduce equipment and exert oneself.
electric device fault rate is high.The chain type of general self-pressure back-blowing bag-type dust collector stirs air door or telescopic air door is all the mechanical device moved in orbit, and under making its supporting electric device be in disadvantageous service condition, easily generation accident, affects 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:
an off-line ash-clearing air door for self-pressure deashing sack cleaner, its composition comprises: doorframe, and be provided with door-hinge in the middle of described doorframe, described door-hinge is provided with door-plate, and described door-plate comprises door-plate, lower door-plate, and described door-hinge bottom is provided with door-hinge seat.
the off-line ash-clearing air door of described self-pressure deashing sack cleaner, described doorframe is rectangle, is provided with median septum in the middle of described rectangle, and have axis hole in the middle of described median septum, 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 rectangle steel plate, and described snakelike pressing plate centre position is circular groove, 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, and described circular groove two ends have one group of screw, and the surrounding of described door-plate has screw.
the off-line ash-clearing air door of described self-pressure deashing sack cleaner, the edges of boards of described door-plate are provided with rubber pressing plate, described rubber pressing plate is arranged on described door-plate by rubber hold-down bolt, between described rubber pressing plate and described door-plate, heat-resisting acid-resisting rubber bar is installed, the edge of described heat-resisting acid-resisting rubber bar sealing 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 air inlet flue, and described upper door-plate and described lower door-plate are that 90 ° of angles 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, back-blowing air channel exports with the pure qi (oxygen) of deduster air-introduced machine and is connected, and makes the pure qi (oxygen) having 2kpa--3kpa pressure in back-blowing air channel all the time, at each cloth bag subchamber outlet and back-blowing wind passage mouth, the air door that keeps out the wind is installed, and with its edge of rubber seal of more than 200 DEG C Celsius of heatproof, acid and alkali-resistance, prevents air leakage phenomena from occurring, two air doors that the off-line ash-clearing of self-pressure deashing sack cleaner controls are coaxial, axle of the air door and axle bed adopt not only wear-resisting but also corrosion-resistant 316L type stainless steel to manufacture, the lower end of axle adopts the thimble-type structure of verge ring to mate with axle bed, not only reaches positioning function but also reduce rotary resistance, the upper end of axle of the air door stretches out in outside deduster, 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, when deduster normally works, the air door of back-blowing wind passage mouth is in closed condition, the door opening of cloth bag subchamber outlet, the normal dedusting of deduster, when the cloth bag dust stratification amount of deduster increases, when resistance is greater than 1200pa, trigger the operating point of pneumatic operated valve, system opens pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag subchamber outlet simultaneously, each air compartment of deduster carries out off-line ash-clearing respectively, 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 subchamber 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 structure is simple, and power consumption is little.
the present invention makes door-hinge and door-hinge seat by using stainless steel, corrosion-resistant while wear-resisting, long service life, can 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, and increase sealing property, minimizing is leaked out, and improves ash-removal effect.
bypass air flue established by the sack cleaner that the present invention installs, prevents from when ignition of the boiler and baker smoking, burning out cloth bag, simultaneously again can on-bne repair, the method for operation is flexible, improves equipment security of operation degree.
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present invention.In figure, 1 is door-plate, and 2 is door-hinge, and 3 is rubber hold-down bolt, and 4 is rubber pressing plate, and 5 is Heat-stable rubber strip, and 6 is snakelike pressing plate, and 7 is doorframe, and 8 is 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 rubber pressing plate, and 5 is 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.
detailed description of the invention:
embodiment 1:
a kind of off-line ash-clearing air door of self-pressure deashing sack cleaner, its composition comprises: doorframe 7, is provided with door-hinge 2, described door-hinge 2 is provided with door-plate in the middle of described doorframe 7, described door-plate comprises door-plate, lower door-plate, and described door-hinge 2 bottom is provided with door-hinge seat 8.
embodiment 2:
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to embodiment 1, described doorframe 7 is rectangle, be provided with median septum 9 in the middle of described rectangle, have axis hole in the middle of described median septum 9, upper ledge and the lower frame of described doorframe 7 have axis hole.
embodiment 3:
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to embodiment 1 or 2, described door-hinge seat 8 is cylindrical, described door-hinge seat 8 upper surface is conical recess, described door-hinge 2 is arranged in the axis hole of described doorframe 7, and described door-hinge 2 lower end assigns in the conical recess of described door-hinge seat 8.
embodiment 4:
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to embodiment 1-3, described door-plate 1 is fixed on door-hinge 2 by one group of snakelike pressing plate 6, described snakelike pressing plate 6 is rectangle steel plate, described snakelike pressing plate 6 centre position is circular groove, and described circular groove two ends have through hole.
embodiment 5:
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to embodiment 1-4, cylinder axis is installed on described door-hinge 2 top, and described door-hinge lower end is conical.
embodiment 6:
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to embodiment 1-5, the centre of described door-plate 1 is circular groove, and described circular groove two ends have one group of screw, and the surrounding of described door-plate 1 has screw.
embodiment 7:
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to embodiment 1-6, the edges of boards of described door-plate 1 are provided with rubber pressing plate 4, described rubber pressing plate 4 is arranged on described door-plate 1 by rubber hold-down bolt 3, is provided with heat-resisting acid-resisting rubber bar 5 between described rubber pressing plate 4 and described door-plate 1.
embodiment 8:
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to embodiment 1-7, described upper door-plate connects the pure qi (oxygen) outlet of air-introduced machine, described lower door-plate connects air inlet flue, and described upper door-plate and described lower door-plate are that 90 ° of angles are arranged on described door-hinge 2.
embodiment 9:
a kind of dust collection method utilizing the off-line ash-clearing air door of the self-pressure deashing sack cleaner described in embodiment 1-8 to carry out, when deduster normally works, the air door of back-blowing wind passage mouth is in closed condition, the door opening of cloth bag subchamber outlet, the normal dedusting of deduster, when the cloth bag dust stratification amount of deduster increases, when resistance is greater than design resistance, trigger the operating point of pneumatic operated valve, system opens pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag subchamber outlet simultaneously, each air compartment of deduster carries out off-line ash-clearing respectively, 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 subchamber outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.
embodiment 10:
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to embodiment 1-9, when manufacturing sack cleaner, a back-blowing air channel is set separately, export with the pure qi (oxygen) of deduster air-introduced machine and be connected, make the pure qi (oxygen) having 2kpa--3kpa pressure in back-blowing air channel all the time; At each cloth bag subchamber outlet and back-blowing wind passage mouth, the air door that keeps out the wind is installed, and with its edge of rubber seal of more than 200 DEG C Celsius of heatproof, acid and alkali-resistance, can effectively prevents air leakage phenomena from occurring; Two air doors that the off-line ash-clearing of self-pressure deashing sack cleaner controls are coaxial, axle of the air door and axle bed employing i.e. wear-resisting but also corrosion-resistant 316L type stainless steel manufactures, not only the lower end of axle adopts the thimble-type structure of verge ring to mate with axle bed, reaches positioning function but also reduce rotary resistance.The upper end of axle of the air door stretches out in outside 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, when deduster normally works, the air door of back-blowing wind passage mouth is in closed condition, the door opening of cloth bag subchamber outlet, the normal dedusting of deduster, when the cloth bag dust stratification amount of deduster increases, when resistance is greater than design resistance (about 1200pa), trigger the operating point of pneumatic operated valve, system opens pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag subchamber outlet simultaneously, each air compartment of deduster carries out off-line ash-clearing respectively, 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 subchamber outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.
embodiment 11
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to embodiment 1-10, major technique key point of the present invention is: two air doors that the off-line ash-clearing of self-pressure deashing sack cleaner controls are coaxial, axle of the air door and axle bed adopt 316L type stainless steel to manufacture, not only the lower end of axle adopts the thimble-type structure of verge ring to mate with axle bed, reaches positioning function but also reduce rotary resistance.The upper end of axle of the air door stretches out in outside 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, when the cloth bag dust stratification amount of deduster increases, when resistance is greater than design resistance, trigger the operating point of pneumatic operated valve, system opens pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag subchamber outlet simultaneously, each air compartment of deduster carries out off-line ash-clearing respectively, 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 subchamber outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.The problems such as the back-blowing mechanical device thoroughly solving the general self-pressure back-blowing bag-type dust collector deashing used now is fragile, seal is poor, inleakage is large, electric device fault rate height, the fault rate namely greatly reducing deduster turn improves deduster equipment security of operation degree.
embodiment 12:
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to embodiment 1-11, when manufacturing sack cleaner, a back-blowing air channel is set separately, export with the pure qi (oxygen) of deduster air-introduced machine and be connected, make the pure qi (oxygen) having 2kpa--3kpa pressure in back-blowing air channel all the time; At each cloth bag subchamber outlet and back-blowing wind passage mouth, the air door (i.e. 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 with its edge of rubber seal of more than 200 DEG C Celsius of heatproof, acid and alkali-resistance, can effectively prevent air leakage phenomena from occurring; Two air doors that the off-line ash-clearing of self-pressure deashing sack cleaner controls are coaxial, axle of the air door and axle bed employing i.e. wear-resisting but also corrosion-resistant 316L type stainless steel manufactures, not only the lower end of axle adopts the thimble-type structure of verge ring to mate with axle bed, reaches positioning function but also reduce rotary resistance.The upper end of axle of the air door stretches out in outside 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, when deduster normally works, the air door of back-blowing wind passage mouth is in closed condition, the door opening of cloth bag subchamber outlet, the normal dedusting of deduster, when the cloth bag dust stratification amount of deduster increases, when resistance is greater than design resistance, trigger the operating point of pneumatic operated valve, system opens pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag subchamber outlet simultaneously, each air compartment of deduster carries out off-line ash-clearing respectively, 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 subchamber outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.
Claims (6)
1.
a kind of off-line ash-clearing air door of self-pressure deashing sack cleaner, its composition comprises: doorframe, it is characterized in that: described doorframe is provided with door-hinge in the centre of doorframe horizontal direction, described door-hinge is provided with door-plate, described door-plate comprises door-plate, lower door-plate, and described door-hinge bottom is provided with door-hinge seat;
described doorframe is rectangle, and described rectangle doorframe is provided with median septum in the centre of doorframe vertical direction, and have axis hole in the middle of described median septum, upper ledge and the lower frame of described doorframe have axis hole;
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, described door-hinge is successively through axis hole, the axis hole of median septum, the axis hole of lower frame of upper ledge, and described door-hinge lower end assigns in the conical recess of described door-hinge seat;
described door-plate is fixed on door-hinge by one group of snakelike pressing plate, and described snakelike pressing plate is rectangle steel plate, and described snakelike pressing plate centre position is circular groove, and described circular groove two ends have through hole.
2.
the off-line ash-clearing air door of self-pressure deashing sack cleaner according to claim 1, is characterized in that: the centre of described door-plate is circular groove, and described circular groove two ends have one group of screw, and the surrounding of described door-plate has screw.
3.
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to claim 1 or 2, it is characterized in that: the edges of boards of described door-plate are provided with rubber pressing plate, described rubber pressing plate is arranged on described door-plate by rubber hold-down bolt, between described rubber pressing plate and described door-plate, heat-resisting acid-resisting rubber bar is installed, the edge of described heat-resisting acid-resisting rubber bar sealing door-plate.
4.
the off-line ash-clearing air door of the self-pressure deashing sack cleaner according to claim 1 or 2, it is characterized in that: described upper door-plate connects the pure qi (oxygen) outlet of air-introduced machine, described lower door-plate connects air inlet flue, and described upper door-plate and described lower door-plate are that 90 ° of angles are arranged on described door-hinge.
5.
the off-line ash-clearing air door of self-pressure deashing sack cleaner according to claim 3, it is characterized in that: described upper door-plate connects the pure qi (oxygen) outlet of air-introduced machine, described lower door-plate connects air inlet flue, and described upper door-plate and described lower door-plate are that 90 ° of angles are arranged on described door-hinge.
6.
a kind of dust collection method utilizing the off-line ash-clearing air door of the described self-pressure deashing sack cleaner of one of claim 1-5 to carry out, it is characterized in that: back-blowing air channel exports with the pure qi (oxygen) of deduster air-introduced machine and is connected, and makes the pure qi (oxygen) having 2kpa--3kpa pressure in back-blowing air channel all the time, at each cloth bag subchamber outlet and back-blowing wind passage mouth, the air door that keeps out the wind is installed, and with its edge of rubber seal of more than 200 DEG C Celsius of heatproof, acid and alkali-resistance, prevents air leakage phenomena from occurring, two air doors that the off-line ash-clearing of self-pressure deashing sack cleaner controls are coaxial, axle of the air door and axle bed adopt not only wear-resisting but also corrosion-resistant 316L type stainless steel to manufacture, the lower end of axle adopts the thimble-type structure of verge ring to mate with axle bed, not only reaches positioning function but also reduce rotary resistance, the upper end of axle of the air door stretches out in outside deduster, 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, when deduster normally works, the air door of back-blowing wind passage mouth is in closed condition, the door opening of cloth bag subchamber outlet, the normal dedusting of deduster, when the cloth bag dust stratification amount of deduster increases, when resistance is greater than 1200pa, trigger the operating point of pneumatic operated valve, system opens pneumatic operated valve successively, the air door of back-blowing wind passage mouth is opened successively, close the air door of cloth bag subchamber outlet simultaneously, each air compartment of deduster carries out off-line ash-clearing respectively, 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 subchamber outlet simultaneously, the deashing process of one-period completes, deduster enters normal operating conditions.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN103463889B true CN103463889B (en) | 2015-09-30 |
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| US20030041729A1 (en) * | 1999-12-29 | 2003-03-06 | Finigan Justin J. | Method and apparatus for cleaning filter bags of bag houses |
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|---|---|---|---|---|
| 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 |
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Also Published As
| Publication number | Publication date |
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| CN103463889A (en) | 2013-12-25 |
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