Collecting polar plate self-cleaning structure
Technical field
This utility model belongs to uses electrostatic effect to separate diffusing particle field from gas or steam (such as air), is specifically related to a kind of collecting polar plate self-cleaning structure.
Background technology
The operation principle of electrostatic precipitator is to utilize high voltage electric field to make flue gas ionize, and dust in air-flow is charged to be separated with air-flow under electric field action.Negative pole is made up of the plain conductor of different section shape, is sparking electrode.Positive pole is made up of the metallic plate of different geometries, is collecting electrode.
Line plate type electrostatic cleaner unit is the one of electrostatic precipitator, is made up of with dust collecting pole plate discharge electrode polar curve, and dust collector pole is formed by the steel plate combination through rolling, and discharge electrode weight suspends in midair, is distributed on parallel dust interpolar.Electrostatic precipitation is exactly to utilize electric charge load produced by corona discharge to the granule in air-flow, makes the process that electrically charged particle moves under electric field force effect and is deposited on dust collector pole.In industrial waste gas dedusting, horizontal Elex precipitator is most widely used, and its installation is easier to, and Operation and maintenance are more convenient.Dusty gas horizontally enters into from cleaner unit side, and purified gas is discharged by opposite side.
Must remove in time when dust stratification on dust collector pole reaches certain thickness, otherwise can reduce electric field intensity, affect efficiency of dust collection, even cause anti-electric-corona discharge, thus affect the properly functioning of electric cleaner.Anti-electric-corona discharge is to affect the huge challenge that electrostatic precipitator is run, and is at high temperature more easy to occur, and when showing as identical running voltage, causes the dust stratification thickness of inverse corona to be much smaller than under room temperature under high temperature.The ash-clearing technology that general electrostatic precipitator is commonly used has lateral mechanical vibrator, top electromagnetic shaking and sound wave ashing.
Lateral rapping is with motor as power, by decelerator band moving axis and beater, it is achieved rapping.It is power that the mode of this rapping needs to additionally introduce motor, wastes the energy;Top electromagnetic shaking is to promote trip rod to certain altitude with the captivation of hot-wire coil, and during power-off, trip rod inertia falls shock pole plate or cathode frame realizes rapping.Under the rapping that top electromagnetic shaking is long-term, pole plate, polar curve long-term jitter, easily cause the fatigue of discharge electrode, the lost of life of guiding discharge pole;Sound wave ashing is with compressed air as power source, by the strong sound wave feed-in Electric Field in ESP space of certain energy, is converted into mechanical energy after arriving pole plate, polar curve, dust layer is made to produce the higher-order of oscillation, offset the surface adhesion in dust layer, make the knoisphere lumpd loosen and come off, reach deashing purpose.But the compressed air that sound wave ashing uses can reduce the gas temperature by high temperature electrostatic cleaner unit significantly, increase energy consumption.
Utility model content
The purpose of this utility model is to provide a kind of collecting polar plate self-cleaning structure, utilizes the dust on this structure cleaning collecting plate to save the energy, and does not affect electrostatic precipitation temperature.
For reaching above-mentioned purpose, base case of the present utility model is as follows:
Collecting polar plate self-cleaning structure, including controller, two air intake branches, cylinder, piston, connector and the scraper plate for collecting plate dedusting, described cylinder two ends seal, and described piston is slidably connected in cylinder, described connector one end is connected with piston, and the other end is connected with scraper plate;Two air intake branch one end all connect the air inlet of line plate type electrostatic cleaner unit, and an air intake branch other end connects with cylinder one end, and another root air intake branch other end connects with the cylinder other end;Being mounted on electrically-controlled valve on two air intake branches, two electrically-controlled valve are all electrically connected with the controller.
The principle of this programme: first pass through opening interval time and starting of the electric control valve on controller two air intake branches of setting, when controller controls a wherein air intake branch air inlet, gas pressure in cylinder increases, gas push piston moves in cylinder, piston is then moved by connector scraper plate, just can be scraped by the dust that adsorb on collecting plate when scraper plate moves;When controller controls another root air intake branch air inlet, the gas push piston in cylinder moves in the opposite direction, and the dust of the absorption on collecting plate is scraped by scraper plate again, repeats the dust cleaning that said process can will adsorb on collecting plate.
The effect of this programme: in this programme, line plate type electrostatic cleaner unit is make use of to treat the gas of dedusting freely dexterously, utilization treats that dedusting gas push piston moves in cylinder, thus drive scraper plate to be scraped by the dust adsorbed on collecting plate, this programme need not additional power-equipment, saving the energy, additionally the temperature in cleaner unit will not be impacted by the dedusting method of this programme, so nor affecting on the dust removing effects of cleaner unit.
Prioritization scheme 1, the further optimization to base case, described scraper plate is thermoplastic elastomer (TPE) scraper plate.Thermoplastic elastomer (TPE) scraper plate has flexibility, it is possible to fit with collecting plate, it is simple to scraped by the dust adsorbed on collecting plate, and above-mentioned scraper plate is capable of withstanding higher temperature.
Prioritization scheme 2, the further optimization to base case, described cylinder two ends are equipped with sealing lid, and this sealing lid removably connects with cylinder.By the gas in air intake branch entrance cylinder with dust, having dust and accumulate in cylinder after using a period of time, above-mentioned connected mode is easy to open sealing lid, and clears up the dust in cylinder.
Prioritization scheme 3, the further optimization to prioritization scheme 2, described sealing covers and is provided with thread segment and conical section, is provided with the taper hole coordinated with conical section in cylinder, and described sealing lid is connected with cylinder screw by thread segment.The mode that sealing lid is connected with cylinder screw is simple and firmly, additionally sealing is covered and coordinated by conical section and taper hole with cylinder, can form preferably sealing.
Prioritization scheme 4, to base case, the further optimization of prioritization scheme any one of 1-3, described electrically-controlled valve is electromagnetic valve.The corresponding time of electromagnetic valve is as short as several millisecond, and control accuracy is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model collecting polar plate self-cleaning constructive embodiment 1;
Fig. 2 is the structural representation of this utility model collecting polar plate self-cleaning constructive embodiment 2.
Detailed description of the invention
Below by detailed description of the invention, this utility model is described in further detail:
Reference in Figure of description includes: collecting plate 10, air intake branch 20, cylinder 30, piston 40, connector 50, scraper plate 60, sealing lid 70, thread segment 71, electrically-controlled valve 80, controller 90.
Embodiment 1
Embodiment 1 is the most as shown in Figure 1: collecting polar plate self-cleaning structure, including 90, two air intake branches 20 of controller, cylinder 30, piston 40, connector 50 and the scraper plate 60 for collecting plate 10 dedusting, cylinder 30 two ends seal, piston 40 is slidably connected in cylinder 30, connector 50 one end is connected with piston 40, and the other end is connected with scraper plate 60;Two air intake branch 20 one end all connect the air inlet of line plate type electrostatic cleaner unit, and air intake branch 20 other end connects with cylinder 30 one end, and another root air intake branch 20 other end connects with cylinder 30 other end;Being mounted on electrically-controlled valve 80 on two air intake branches 20, two electrically-controlled valve 80 all electrically connect with controller 90, and the electrically-controlled valve 80 of the present embodiment is electromagnetic valve, and the corresponding time of electromagnetic valve is as short as several millisecond, and control accuracy is high.
In the present embodiment, scraper plate 60 is thermoplastic elastomer (TPE) scraper plate 60.Thermoplastic elastomer (TPE) scraper plate 60 has flexibility, it is possible to fit with collecting plate 10, it is simple to scraped by the dust of absorption on collecting plate 10, and above-mentioned scraper plate 60 is capable of withstanding higher temperature.
In the present embodiment, cylinder 30 two ends are equipped with sealing lid 70, and this sealing lid 70 is connected by four screws with cylinder 30.Entering gas in cylinder 30 with dust by air intake branch 20, have dust and accumulate in cylinder 30 after using a period of time, above-mentioned connected mode is easy to open sealing lid 70, and clears up the dust in cylinder 30.
Embodiment 2
As shown in Figure 2, it is in place of difference with embodiment 1: this programme seals lid 70 and is connected not by screw with cylinder 30, seal lid 70 and be provided with thread segment 71 and conical section, in cylinder 30, be provided with the taper hole coordinated with conical section, seal lid 70 and threadeded with cylinder 30 by thread segment 71.Simply and firmly, additionally sealing lid 70 is coordinated by conical section and taper hole with cylinder 30 to seal 70 modes threadeded with cylinder 30 of covering, and can form preferable sealing.
Specific works principle:
It is specifically described as a example by embodiment 1 below: as shown in Figure 1, first pass through controller 90 and set opening interval time and starting of electrically-controlled valve 80 on two air intake branches 20, as a example by being 2 hours interval time, when controller 90 controls wherein air intake branch 20 air inlet, gas pressure in cylinder 30 increases, gas push piston 40 moves in cylinder 30, and piston 40 is then moved by connector 50 scraper plate 60, just can be scraped by the dust of absorption on collecting plate 10 when scraper plate 60 moves;After being spaced 2 hours, controller 90 controls another root air intake branch 20 air inlet, gas push piston 40 in cylinder 30 moves in the opposite direction, and the dust of the absorption on collecting plate 10 is scraped by scraper plate 60 again, and repeating said process can be by the dust cleaning of absorption on collecting plate 10.
In this programme, line plate type electrostatic cleaner unit is make use of to treat the gas of dedusting freely dexterously, utilization treats that dedusting gas push piston 40 moves in cylinder 30, thus drive scraper plate 60 to be scraped by the dust of absorption on collecting plate 10, this programme need not additional power-equipment, saving the energy, additionally the temperature in cleaner unit will not be impacted by the dedusting method of this programme, so nor affecting on the dust removing effects of cleaner unit.
Above-described is only embodiment of the present utility model, and in scheme, the known general knowledge such as concrete structure and characteristic too much describes at this.Should be understood that; for a person skilled in the art, on the premise of without departing from this utility model structure, it is also possible to make some deformation and improvement; these also should be considered as protection domain of the present utility model, and these are all without affecting effect and the practical applicability that this utility model is implemented.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. records the content that may be used for explaining claim.