CN114904653A

CN114904653A - Air purification equipment and air purification system

Info

Publication number: CN114904653A
Application number: CN202210380853.7A
Authority: CN
Inventors: 许小红; 郭明丰; 黄正威
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-09
Filing date: 2022-04-09
Publication date: 2022-08-16

Abstract

The invention belongs to the technical field of air purification, and particularly relates to air purification equipment and an air purification system, which comprise an electrostatic dust collector; the electrostatic dust collector also comprises a machine body, and one end of the machine body is provided with an air inlet; the other end of the machine body is provided with an air outlet; the lower end of the machine body is provided with an ash outlet; an installation frame is arranged above the ash outlet; according to the invention, through the arrangement of the dust cleaning mechanism, the dust cleaning mechanism can replace the electromagnetic vibration hammer, so that the dust cleaning mechanism scrapes off the dust with high specific resistance adhered to the dust collecting motor plate, the problem that the dust is separated from the dust collecting electrode plate due to vibration of the electromagnetic vibration hammer and secondary flying of the dust is caused is reduced, and through the arrangement of the dust flying prevention module, the dust flying prevention module can prevent the smoke entering the machine body from blowing to the fallen dust, the problem of secondary flying of the dust is further avoided, and the dust removing effect of the electrostatic dust remover is improved; the practicability of the invention is improved.

Description

Air purification equipment and air purification system

Technical Field

The invention belongs to the technical field of air purification, and particularly relates to air purification equipment and an air purification system.

Background

The working principle of the electrostatic dust collector is that a high-voltage electric field is utilized to ionize smoke, and dust charges in airflow are separated from the airflow under the action of the electric field; the negative electrode is made of metal wires with different section shapes, and is called a discharge electrode and a corona electrode; the positive electrode is made of metal plates with different geometric shapes, and is called a dust collecting electrode; the performance of the electrostatic dust collector is influenced by three factors of dust property, equipment construction, flue gas flow velocity and the like; in addition, the existing electrostatic precipitator raps the discharge electrode through the electromagnetic rapping hammer, but the rapping easily causes secondary flying of dust, thereby reducing the effect of the electrostatic precipitator;

at present, low-sulfur coal is generally used in thermal power generation of various countries in the world to limit the emission of sulfur oxides, and for the low-sulfur coal, the content of alumina and silica in dust generated by combustion is high, so that the specific resistance of the dust is too high, and after the dust with the too high specific resistance reaches a dust collecting electrode, the charge on the dust is not easy to discharge, so that the adhesion force of the dust with the high specific resistance on the dust collecting electrode is too large, the dust is easy to continuously accumulate on the dust collecting electrode, a voltage gradient is formed between dust layers, and local breakdown and discharge phenomena are generated; in order to ensure that the dust with high specific resistance is vibrated and dropped from the dust collecting motor, the vibration force of the electromagnetic vibration hammer is increased frequently, so that the dust with high specific resistance can be separated from the dust collecting electrode, but the vibration force of the electromagnetic vibration hammer is increased, so that the dust is secondarily raised and increased, the dust removing effect of the electrostatic dust collector is reduced, and the discharged air purifying effect is poor.

In view of this, the invention provides an air purification device and an air purification system, which solve the technical problem of secondary dust flying caused by the vibration of the electromagnetic vibration hammer.

Disclosure of Invention

In order to make up the defects of the prior art, the invention provides air purification equipment and an air purification system, wherein an electrostatic dust collector used in the invention can replace an electromagnetic vibration hammer through the arrangement of a dust cleaning mechanism, so that the dust cleaning mechanism scrapes off dust with high specific resistance adhered to a dust collection motor plate, the problem that the dust is separated from the dust collection electrode plate due to vibration of the electromagnetic vibration hammer and secondary flying of the dust is caused is reduced, and the dust-flying prevention module can prevent smoke entering a machine body from blowing to the falling dust through the arrangement of the dust-flying prevention module, so that the problem that the secondary flying of the dust is further avoided, and the dust removal effect of the electrostatic dust collector is improved; the practicability of the invention is improved.

The technical scheme adopted by the invention for solving the technical problem is as follows: the invention relates to air purification equipment, which comprises an electrostatic dust collector; the electrostatic precipitator further comprises:

the air conditioner comprises a machine body, wherein one end of the machine body is provided with an air inlet; the other end of the machine body is provided with an air outlet; the lower end of the machine body is provided with an ash outlet; an installation frame is arranged above the ash outlet; the mounting frame is fixedly connected with the inner wall of the machine body; a dust collecting electrode plate is fixedly arranged at the upper end of the mounting rack; a spirally-wound corona electrode is arranged in the machine body; the corona electrode is fixedly connected with the machine body; the dust collecting electrode plates are positioned on two sides of the corona electrode;

a dust removal mechanism; the ash removal mechanism is arranged on one surface of the dust collecting electrode plate close to the corona electrode; the ash removal mechanism is used for cleaning dust adhered to the dust collecting electrode plate;

a dust-raising prevention module; the dust-raising prevention module is arranged below the ash cleaning mechanism; the dust-raising prevention module is used for blocking dust cleaned by the dust cleaning mechanism so as to avoid secondary flying of the dust;

a controller; the controller is used for controlling the whole electrostatic dust collector to automatically operate.

Preferably, the ash removal mechanism comprises:

the dust cleaning plate is provided with sliding grooves on two sides of the dust collecting electrode plate; a bracket is connected in the sliding groove; mounting grooves are formed in the upper ends of the two supports; the ash removing plate is rotationally connected to the opposite groove walls of the two mounting grooves through a torsion spring; the bottom of the mounting groove is fixedly connected with an electromagnetic chuck; one surface of the ash removing plate close to the electromagnetic chuck is fixedly connected with an iron bar; the dust prevention module is arranged at the lower end of the bracket;

the cleaning rod is rotatably connected with the machine body; the cleaning rod is arranged in the center of the corona electrode; the upper end of the cleaning rod is rotatably connected with a blade; one end of the blade, which is far away from the cleaning rod, is fixedly connected with the cleaning rod through a telescopic module; the blade is C-shaped;

the transmission module is arranged between the cleaning rod and the ash cleaning plate; the cleaning rod drives the ash removing plate to ascend and descend in the sliding groove through the transmission module.

Preferably, the surface of the cleaning rod is connected with a connecting rod in a sliding manner; one end of the connecting rod, which is far away from the cleaning rod, is connected with a sleeve in a sliding way; one end of the sleeve pipe, which is far away from the connecting rod, is fixedly connected with a cleaning sleeve; an extension spring is arranged in the sleeve; one end of the extension spring is fixedly connected with the cleaning sleeve, and the other end of the extension spring is fixedly connected with the connecting rod; the cleaning sleeve is in sliding contact with the corona electrode.

Preferably, the transmission module comprises a worm; the bracket is spirally connected with the worm; the lower end of the cleaning rod is fixedly connected with a gear; a transmission rod is rotationally connected in the sliding groove; threads are arranged at two ends of the transmission rod; one end of the transmission rod is in spiral transmission with the worm, and the other end of the transmission rod is in spiral transmission with the gear.

Preferably, the telescopic module comprises a fixing rod made of PA material; one end of the fixed rod is hinged with the cleaning rod, and the other end of the fixed rod is provided with a groove; a telescopic rod made of PA material is connected in the groove in a sliding and sealing manner; one end of the telescopic rod, which is far away from the groove, is hinged with the blade; the telescopic rod is fixedly connected with the bottom of the groove through a tower-shaped spring; the bottom of the groove is fixedly connected with an electromagnet; one end of the telescopic rod close to the groove is fixedly connected with an iron sheet.

Preferably, the dust prevention module comprises a folding plate; one end of the folding plate is hinged with the support, and the other end of the folding plate is hinged with the mounting frame; the two adjacent folding plates are hinged with each other; and PTFE membranes are fixedly connected to two sides of the folding plate.

Preferably, the vertical section of the folding plate is a right trapezoid; when the folding plate is extended, the inclined surface faces the dust collecting electrode plate.

Preferably, the lower end of the cleaning rod is fixedly connected with a conical dust cover; the dust cover is made of PTFE material; a through groove is formed in the surface of the dust cover; the transmission rod is connected in a rotating and sealing mode in the through groove.

Preferably, the inner wall of the chute is connected with a corrugated sheet made of PTFE material in a sliding manner; the number of the corrugated sheets is at least two; one end, far away from each other, of each of the two corrugated sheets is fixedly connected with the groove wall of the sliding groove, and one end, close to each other, of each of the two corrugated sheets is fixedly connected with the support.

The air purification system disclosed by the invention comprises the air purification equipment; the air purification system includes:

an air preheater; the air preheater is communicated with the boiler; the air preheater is used for recovering the heat of the flue gas and reducing the temperature of the flue gas;

the air inlet of the electrostatic dust collector is communicated with the air preheater; the electrostatic dust collector is used for purifying and removing dust from the flue gas cooled by the air preheater;

the induced draft fan is communicated with an air outlet of the electrostatic dust collector; the induced draft fan is used for pumping out air after dust removal in the electrostatic dust collector; flue gas in the pressure boiler enters an electrostatic dust collector through an air preheater to carry out flue gas dust collection;

the air inlet of the absorption tower is communicated with the induced draft fan; the induced draft fan introduces air into the absorption tower for desulfurization and denitrification treatment; and discharging the desulfurized and denitrated air from an air outlet of the absorption tower.

The invention has the following beneficial effects:

1. the electrostatic dust collector has the advantages that the dust removing mechanism can replace the electromagnetic vibration hammer through the arrangement of the dust removing mechanism, so that dust with high specific resistance adhered to the dust collecting motor plate is scraped off by the dust removing mechanism, the problem that the dust is separated from the dust collecting electrode plate due to vibration of the electromagnetic vibration hammer and secondary flying of the dust is caused is solved, the dust preventing module can prevent smoke entering a machine body from blowing to the fallen dust through the arrangement of the dust preventing module, the problem that the dust is secondarily flying is further avoided, and the dust removing effect of the electrostatic dust collector is improved; the practicability of the invention is improved.

2. The electrostatic dust collector used in the invention can prevent falling dust from being blocked by the dust cover through the arrangement of the dust cover, so that the dust is prevented from falling into the meshing position of the transmission rod and the gear, the friction force generated by the meshing of the transmission rod and the gear is reduced, the abrasion between the transmission rod and the gear is reduced, the service life of the transmission rod and the gear is prolonged, the effect that the blade drives the transmission rod to rotate is also improved, and the actual application effect of the electrostatic dust collector is effectively improved.

Drawings

The invention is further described with reference to the following figures and embodiments.

FIG. 1 is a perspective view of an electrostatic precipitator for use in the present invention;

FIG. 2 is a schematic view of the construction of an electrostatic precipitator used in the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a schematic view of the telescoping pole used in the present invention;

FIG. 5 is a schematic view of a folded sheet used in the present invention;

FIG. 6 is a perspective view of a deashing plate for use in the present invention;

in the figure: 1. a body; 11. an air inlet; 12. an air outlet; 13. an ash outlet; 14. a mounting frame; 15. a dust collecting electrode plate; 16. a corona electrode; 2. cleaning the ash plate; 21. a chute; 211. a corrugated sheet; 22. a support; 23. mounting grooves; 24. an electromagnetic chuck; 25. iron bars; 26. folding the plate; 261. a PTFE membrane; 3. a cleaning rod; 31. a blade; 32. a connecting rod; 33. a sleeve; 34. an extension spring; 35. cleaning the sleeve; 36. fixing the rod; 361. a groove; 362. an electromagnet; 37. a telescopic rod; 38. a tower-shaped spring; 4. a worm; 41. a gear; 42. a transmission rod; 43. a dust cover; 431. a through groove.

Detailed Description

The present invention will be further described with reference to the following detailed description so that the technical means, the creation features, the achievement purposes and the effects of the present invention can be easily understood.

The embodiment of the invention provides air purification equipment, which solves the problems that low-sulfur coal is generally used in thermal power generation to limit the emission of sulfur oxides, and for the low-sulfur coal, the content of alumina and silica in dust generated by combustion is high, so that the specific resistance of the dust is too high, and after the dust with the too high specific resistance reaches a dust collecting electrode, the charge on the dust is not easy to discharge, so that the adhesion of the dust with the high specific resistance on the dust collecting electrode is too high, the dust is easy to accumulate on the dust collecting electrode continuously, a voltage gradient is formed between dust layers, and the phenomena of local breakdown and discharge are generated; in order to ensure that the dust with high specific resistance is vibrated down from the dust collecting motor, the vibration force of the electromagnetic vibration hammer is usually increased to separate the dust with high specific resistance from the dust collecting electrode, but the secondary flying of the dust is increased due to the increase of the vibration force of the electromagnetic vibration hammer, so that the dust removing effect of the electrostatic dust collector is reduced, and the exhaust air purifying effect is poor;

in order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea: the dust cleaning mechanism is arranged on one surface of the dust collecting electrode plate 15 close to the corona electrode 16, so that the dust cleaning mechanism can replace an electromagnetic vibration hammer, the dust cleaning mechanism can scrape off dust with high specific resistance adhered to a dust collecting motor plate, the problem that the dust is separated from the dust collecting electrode plate 15 due to vibration of the electromagnetic vibration hammer and secondary flying of the dust is caused is solved, and the dust preventing module can prevent smoke entering the machine body 1 from blowing to the fallen dust through the arrangement of the dust preventing module, so that the problem that the dust is secondarily flying is further avoided, and the dust removing effect of the electrostatic dust collector is improved; the practicability of the invention is improved;

as shown in fig. 1 to 6, an air cleaning apparatus according to the present invention includes an electrostatic precipitator; the electrostatic precipitator further comprises:

the air conditioner comprises a machine body 1, wherein an air inlet 11 is formed in one end of the machine body 1; the other end of the machine body 1 is provided with an air outlet 12; the lower end of the machine body 1 is provided with an ash outlet 13; an installation frame 14 is arranged above the ash outlet 13; the mounting frame 14 is fixedly connected with the inner wall of the machine body 1; the upper end of the mounting frame 14 is fixedly provided with a dust collecting electrode plate 15; a spirally-wound corona electrode 16 is arranged in the machine body 1; the corona electrode 16 is fixedly connected with the machine body 1; the collecting electrode plates 15 are positioned at two sides of the corona electrode 16;

a dust removal mechanism; the ash removal mechanism is arranged on one surface of the dust collecting electrode plate 15 close to the corona electrode 16; the ash removal mechanism is used for cleaning dust adhered to the dust collecting electrode plate 15;

a dust raising prevention module; the dust-raising prevention module is arranged below the ash cleaning mechanism; the dust-raising prevention module is used for blocking dust cleaned by the dust cleaning mechanism so as to avoid secondary flying of the dust;

a controller; the controller is used for controlling the whole electrostatic dust collector to automatically operate;

the thermal power generation generally uses low-sulfur coal to limit the emission of sulfur oxides, and for the low-sulfur coal, the content of alumina and silica in dust generated by combustion is high, so that the specific resistance of the dust is too high, and after the dust with the too high specific resistance reaches a dust collecting electrode, the charge on the dust is not easy to discharge, so that the adhesion force of the dust with the high specific resistance on the dust collecting electrode is too large, the dust is easily accumulated on the dust collecting electrode continuously, a voltage gradient is formed between dust layers, and the phenomena of local breakdown and discharge are generated; in order to ensure that the dust with high specific resistance is vibrated down from the dust collecting motor, the vibration force of the electromagnetic vibration hammer is usually increased to separate the dust with high specific resistance from the dust collecting electrode, but the vibration force of the electromagnetic vibration hammer is increased to increase the secondary flying of the dust, so that the dust removing effect of the electrostatic dust collector is reduced, and the purification effect of the discharged air is poor;

when the electrostatic dust collector works, a worker controls smoke to enter the machine body 1 from the air inlet 11 through the controller, and at the moment, the controller controls the electrostatic dust collector to be electrified, so that an electric field enough for ionizing gas is maintained between the corona electrode 16 and the dust collecting electrode plate 15; the negative ions and positive ions generated after the gas ionization are adsorbed on the dust passing through the electric field, so that the dust obtains electric charges and moves to electrodes with different polarities respectively and is deposited on the electrodes, and the dust adsorbing speed of the positive electrode is higher than that of the negative electrode, so that the dust collecting electrode plate 15 is used as the positive electrode, the corona electrode 16 is used as the negative electrode, most of dust is deposited on the dust collecting electrode plate 15, and a few of dust is adhered on the corona electrode 16 in the smoke introducing process; by calculating the accumulation time of the dust on the collecting electrode plate 15 and setting that the dust is to be accumulated and spread over the collecting electrode plate 15, the controller controls the ash removal mechanism to operate, so that the ash removal mechanism can scrape the dust on the collecting electrode plate 15, and the problem that the dust with high specific resistance is adhered to the collecting electrode plate 15 and is difficult to separate is avoided; the ash removing mechanism enables the dust to fall to the ash outlet 13 below the mounting frame 14 in the process of scraping the dust on the dust collecting electrode plate 15; after the dedusting of the flue gas is finished, a worker opens the dust outlet 13 and collects and processes the dust in the dust outlet 13, and the dust-raising prevention module positioned below the dust-cleaning mechanism can block the fallen dust, so that the fallen dust is prevented from being blown by the flue gas in the machine body 1 to generate secondary flying, and the dedusting effect of the electrostatic precipitator is improved;

according to the invention, through the arrangement of the dust cleaning mechanism, the dust cleaning mechanism can replace the electromagnetic vibration hammer, so that the dust cleaning mechanism scrapes off the dust with high specific resistance adhered to the dust collecting motor plate, the problem that the dust is separated from the dust collecting electrode plate 15 due to vibration of the electromagnetic vibration hammer and secondary flying of the dust is caused is reduced, and through the arrangement of the dust raising prevention module, the dust raising prevention module can prevent the smoke entering the machine body 1 from blowing to the fallen dust, the problem of secondary flying of the dust is further avoided, and the dust removing effect of the electrostatic dust remover is improved; the practicability of the invention is improved.

As an embodiment of the present invention, the ash removal mechanism includes:

the ash cleaning plate 2 is provided with sliding grooves 21 on two sides of the dust collecting electrode plate 15; a bracket 22 is connected in the sliding groove 21; the upper ends of the two brackets 22 are respectively provided with a mounting groove 23; the ash cleaning plate 2 is rotatably connected to the opposite groove walls of the two mounting grooves 23 through torsion springs; the bottom of the mounting groove 23 is fixedly connected with an electromagnetic chuck 24; one surface of the ash removing plate 2 close to the electromagnetic chuck 24 is fixedly connected with an iron bar 25; the dust prevention module is arranged at the lower end of the bracket 22;

the cleaning rod 3 is rotatably connected with the machine body 1; the cleaning rod 3 is arranged in the center of the corona electrode 16; the upper end of the cleaning rod 3 is rotatably connected with a blade 31; one end of the blade 31, which is far away from the cleaning rod 3, is fixedly connected with the cleaning rod 3 through a telescopic module; the blade 31 is C-shaped;

the transmission module is arranged between the cleaning rod 3 and the ash cleaning plate 2; the cleaning rod 3 drives the ash cleaning plate 2 to ascend and descend in the chute 21 through the transmission module;

when the dust cleaning device works, in an initial state, the dust cleaning plate 2 and the dust raising prevention module are positioned at the lower end of the dust collecting electrode plate 15, the movable blade 31 is pushed to be in a horizontal state by the telescopic module under the control of the controller, at the moment, the blade 31 cannot be blown by smoke gas to rotate, and an included angle between the dust cleaning plate 2 and the bottom of the mounting groove 23 is 70-90 degrees; when the dust adhered on the surface of the collecting electrode plate 15 needs to be cleaned; the controller controls the telescopic module to contract, so that the telescopic module pulls the blades 31 to rotate downwards, the blades 31 rotate downwards, the C-shaped blades 31 incline downwards at the moment, and the inclined blades 31 are blown by smoke to rotate clockwise along with the smoke entering the machine body 1 passing between the two dust collecting electrode plates 15, so that the blades 31 drive the bracket 22 to ascend through the transmission module; so that the bracket 22 drives the dust-proof module to move upwards; when the bracket 22 is lifted to the uppermost end of the collecting electrode plate 15 through the setting of the PLC controller, the controller controls the electromagnetic chuck 24 to be electrified; the electromagnetic chuck 24 is enabled to adsorb the ash cleaning plate 2 and rotate towards the direction close to the dust collecting electrode plate 15 until the ash cleaning plate 2 is contacted with the dust collecting electrode plate 15, and at the moment, the controller controls the telescopic module to extend out; the telescopic module pushes the C-shaped blades 31 to tilt upwards, and at the moment, the blades 31 tilting upwards rotate reversely under the blowing of smoke, so that the blades 31 drive the cleaning rod 3 to rotate reversely, the cleaning rod 3 drives the bracket 22 to descend through the transmission module, the bracket 22 drives the dust cleaning plate 2 to slide downwards along the collecting electrode plate 15, the dust cleaning plate 2 scrapes off dust on the surface of the collecting electrode plate 15, and the problem that the dust is adhered to the collecting electrode plate 15 and is difficult to fall off is solved; the practical application effect of the invention is effectively improved.

As an embodiment of the invention, a connecting rod 32 is connected to the surface of the cleaning rod 3 in a sliding manner; one end of the connecting rod 32 far away from the cleaning rod 3 is connected with a sleeve 33 in a sliding way; a cleaning sleeve 35 is fixedly connected to one end of the sleeve 33 far away from the connecting rod 32; an extension spring 34 is arranged in the sleeve 33; one end of the extension spring 34 is fixedly connected with the cleaning sleeve 35, and the other end of the extension spring is fixedly connected with the connecting rod 32; the cleaning sleeve 35 is in sliding contact with the corona electrode 16;

when the corona electrode 16 in the prior art is spirally surrounded, and in the prior art, when dust on the corona electrode 16 is separated from the corona electrode 16 and falls downwards under the rapping of the electromagnetic rapping hammer, the dust is easy to fall to the spiral part of the lower corona electrode 16, so that the dust cleaning effect on the corona electrode 16 is reduced, most of dust is still remained on the corona electrode 16, and the dust in the smoke is prevented from receiving electric charges released from the corona electrode 16; thereby reducing the dust removal effect of the electrostatic dust collector; in the initial state, the supporting rod of the invention drives the cleaning sleeve 35 to be close to the blade 31, and at the moment, the cleaning sleeve 35 is positioned at the upper end of the spirally-wound corona electrode 16; and in the process that the blade 31 drives the cleaning rod 3 to rotate clockwise, the cleaning sleeve 35 rotates downwards along the corona electrode 16 which is spirally wound, so that dust adhered to the corona electrode 16 falls off from the corona electrode 16 under the pushing of the cleaning sleeve 35, and the dust falling to the lower-layer spiral part of the corona electrode 16 continuously falls off from the corona electrode 16 under the continuous pushing of the cleaning sleeve 35 along with the continuous downward rotation of the cleaning sleeve 35 along the corona electrode 16 which is spirally wound, so that the residual quantity of the dust on the corona electrode 16 is reduced, and the actual application effect of the invention is effectively improved.

As an embodiment of the invention, the transmission module comprises a worm 4; the bracket 22 is in spiral connection with the worm 4; the lower end of the cleaning rod 3 is fixedly connected with a gear 41; a transmission rod 42 is rotationally connected in the sliding groove 21; threads are arranged at two ends of the transmission rod 42; one end of the transmission rod 42 is in spiral transmission with the worm 4, and the other end of the transmission rod is in spiral transmission with the gear 41;

when the telescopic module is in work, when the blade 31 is pulled by the telescopic module to incline downwards, the blade 31 drives the cleaning rod 3 to rotate clockwise, so that the cleaning rod 3 drives the gear 41 at the lower end to rotate, the gear 41 and the threaded end of the transmission rod 42 are in a meshing transmission mode, the gear 41 drives the transmission rod 42 to rotate, the transmission rod 42 drives the worm 4 to rotate in a meshing transmission mode through the thread at the other end, and the worm 4 drives the bracket 22 to ascend along the chute 21; the bracket 22 drives the cleaning plate to move upwards until the bracket 22 is driven by the cleaning plate to be positioned at the upper end of the dust collecting electrode plate 15, the controller controls the electromagnetic chuck 24 and controls the telescopic module to extend out at the same time, so that the electromagnetic chuck 24 adsorbs iron blocks to drive the dust cleaning plate 2 to be contacted with the dust collecting electrode plate 15; at this moment, the blades 31 are driven by the telescopic module to tilt upwards, and at this moment, the blades 31 reversely rotate under the blowing of the flue gas, so that the cleaning rod 3 reversely rotates under the driving of the blades 31, the cleaning rod 3 drives the transmission rod 42 to reversely rotate, the transmission rod 42 drives the worm 4 to reversely rotate, the worm 4 reversely rotating further drives the dust cleaning plate 2 to move downwards, and the dust cleaning plate 2 cleans dust on the dust collecting electrode plate 15.

As an embodiment of the present invention, the telescopic module includes a fixing rod 36 made of PA material; one end of the fixed rod 36 is hinged with the cleaning rod 3, and the other end is provided with a groove 361; the telescopic rod 37 made of PA material is connected in the groove 361 in a sliding and sealing mode; one end of the telescopic rod 37 far away from the groove 361 is hinged with the blade 31; the telescopic rod 37 is fixedly connected with the bottom of the groove 361 through a tower-shaped spring 38; the bottom of the groove 361 is fixedly connected with an electromagnet 362; one end of the telescopic rod 37 close to the groove 361 is fixedly connected with an iron sheet;

when the cleaning machine works, in an initial state, the controller controls the electromagnet 362 to be electrified, so that the electromagnet 362 generates magnetic force, an iron sheet is adsorbed by the magnetic force of the electromagnet 362, the iron sheet drives the telescopic rod 37 to compress the tower-shaped spring to enter the groove 361, the electromagnet 362 can drive the telescopic rod 37 to enter the groove 361 by adsorbing the iron sheet by controlling the current introduced by the electromagnet 362, at the moment, the telescopic rod 37 pulls the blade 31 to be in a horizontal state, so that the impact force of airflow on the blade 31 is small, the end of the cleaning rod 3, where the blade 31 is installed, is in rotary sealing connection with the machine body 1, and the impact force of the airflow on the blade 31 in the horizontal state is smaller than the friction force between the machine body 1 and the cleaning rod 3, so that the blade 31 cannot rotate; when the dust collecting electrode plate 15 needs to be cleaned, the controller controls the current introduced by the electromagnet 362 to increase, so that the iron sheet on the telescopic rod 37 drives the telescopic rod 37 to continuously compress the tower-shaped spring to enter the groove 361 under the action of the adsorption force of the electromagnet 362, the blade 31 rotates downwards to incline, the blade 31 is subjected to smoke blowing power to increase, the blade 31 rotates under the smoke blowing, and the blade 31 drives the bracket 22 on the worm 4 to ascend through the transmission rod 42; when the bracket 22 is lifted to the upper end of the collecting electrode plate 15, the controller controls the electromagnet 362 to be powered off, so that the telescopic rod 37 is pushed by the restoring force of the tower-shaped spring to extend out of the groove 361; the telescopic rod 37 pushes the blade 31 to rotate upwards, so that the smoke generates reverse pushing force on the blade 31, and the blade 31 rotates reversely; and the telescopic rod 37 and the fixing rod 36 are made of PA materials, so that the telescopic rod 37 and the fixing rod 36 are acid-resistant and alkali-resistant, the telescopic rod 37 and the fixing rod 36 are prevented from being corroded by acidic and alkali dust, the service lives of the telescopic rod 37 and the fixing rod 36 are prolonged, and the practical application effect of the invention is effectively improved.

As an embodiment of the present invention, the dust prevention module includes a folding plate 26; one end of the folding plate 26 is hinged with the bracket 22, and the other end is hinged with the mounting frame 14; the two adjacent folding plates 26 are hinged with each other; the two sides of the folding plate 26 are fixedly connected with PTFE membranes 261;

in operation, when the worm 4 drives the bracket 22 to move upwards, the bracket 22 pulls the folding plate 26 to rise, so that the folding plate 26 is extended and opened, and when the device bracket 22 is positioned at the upper end of the collecting electrode plate 15, the extended folding plate 26 blocks the collecting electrode plate 15, and dust with charges adsorbed by the collecting electrode plate 15 is blocked by the folding plate 26, so that the dust with charges is prevented from continuously attaching to the folding plate 265 in the cleaning process of the collecting electrode plate 15; when the controller electromagnet 362 is powered off, the controller controls the electromagnetic chuck 24 to be powered on and adsorb the ash removing plate 2 to rotate towards the direction close to the collecting electrode plate 15, so that the ash removing plate 2 is contacted with the collecting electrode plate 15; when the electromagnet 362 is powered off, the tower-shaped spring pushes the telescopic rod 37 to enable the telescopic rod 37 to push the blade 31 to deflect reversely, at the moment, the blade 31 rotates under the blowing of smoke, the blade 31 drives the worm 4 to rotate reversely through the transmission rod 42, the worm 4 drives the support 22 to descend, the support 22 drives the dust cleaning plate 2 to separate dust on the collecting electrode plate 15, due to the blocking of the folding plate 26, the dust separated from the collecting electrode plate 15 only drops from the space between the folding plate 26 and the collecting electrode plate 15, and the two sides of the folding plate 26 are fixedly connected with the PTFE film 261, so that the PTFE film 261 not only blocks the external smoke from blowing to the dropped dust, thereby avoiding secondary flying of the dust, but also blocks the dropped dust on the collecting electrode plate 15 from being blown by the smoke; further, dust falling from the dust collecting electrode plate 15 is prevented from adsorbing positive charges and is blown by smoke and floats to the corona electrode 16, dust is prevented from being accumulated on the corona electrode 16, the dust cleaning effect of the dust cleaning plate 2 is improved, and the PTFE film 261 has the characteristic of being not stained with dust, so that when the dust scraped from the dust cleaning plate 2 and the dust adsorbed by the dust collecting electrode plate 15 float to the PTFE film 261, the dust can not adhere to the PTFE film 261 and slide downwards along the PTFE film 261 under the action of self gravity, and finally falls off the dust outlet 13, so that a worker can collect and treat the dust falling from the dust outlet 13, and further the practicability of the dust collecting device is effectively improved.

As an embodiment of the present invention, the vertical section of the folding plate 26 is a right trapezoid; the folding plate 26 is inclined toward the collecting electrode plate 15 when it is extended;

during operation, when the dust cleaning plate 2 scrapes off dust adhered to the surface of the collecting electrode plate 15, the bracket 22 drives the dust cleaning plate 2 to move downwards and extrude the folding plates 26 to fold, and dust is easily accumulated between the folding plates 26 after folding, so that the folding plates 26 are arranged in a right trapezoid shape; one surface of the folded folding plate 26 close to the dust collecting electrode plate 15 is still in a downward inclined state, so that dust scattered on the inclined surface of the folding plate 26 can slide along the inclined surface of the folding plate 26, thereby avoiding the dust remaining between two adjacent folding plates 26 after being folded, reducing the residual dust in the machine body 1, further improving the dust removing effect of the electric dust collector, and effectively improving the practical application effect of the electric dust collector.

As an embodiment of the invention, the lower end of the cleaning rod 3 is fixedly connected with a conical dust cover 43; the dust cover 43 is made of PTFE material; a through groove 431 is formed in the surface of the dust cover 43; the transmission rod 42 is in rotary sealing connection in the through groove 431;

in operation, the dust cover 43 is located below the mounting bracket 14; the transmission rod 42 is rotatably connected with the dustproof cover 43, the dustproof cover 43 is fixedly connected to the lower end of the cleaning rod 3, one end of the transmission rod 42 is in inner meshing transmission with the gear 41 in the dustproof cover 43, the dustproof cover 43 protects the meshing part of the gear 41 and the transmission rod 42, when the cleaning rod 3 drives the cleaning sleeve 35 to clean dust accumulated on the spiral corona electrode 16, the cleaning sleeve 35 pushes the dust on the corona electrode 16 to drop into the dust outlet 13 below, and the dustproof cover 43 is arranged, so that the dropped dust can be blocked by the dustproof cover 43, the dust is prevented from falling into the meshing part of the transmission rod 42 and the gear 41, friction force generated by meshing of the transmission rod 42 and the gear 41 is reduced, abrasion between the transmission rod 42 and the gear 41 is reduced, the service lives of the transmission rod 42 and the gear 41 are prolonged, and the effect of the blade 31 driving the transmission rod 42 to rotate is also improved, the practical application effect of the invention is effectively improved.

In one embodiment of the present invention, a PTFE corrugated sheet 211 is slidably connected to an inner wall of the sliding groove 21; the number of the corrugated sheets 211 is at least two; one ends, far away from each other, of the two corrugated sheets 211 are fixedly connected with the groove wall of the sliding groove 21, and one ends, close to each other, of the two corrugated sheets 211 are fixedly connected with the bracket 22;

during operation, in the process that the support 22 is driven to ascend by the worm 4, the support 22 pushes the corrugated sheet 211 upwards to be folded, and meanwhile, the corrugated sheet 211 can slide upwards along the side wall of the sliding groove 21, so that the corrugated sheet 211 can always block the sliding groove 21, in the process that the support 22 ascends, the support 22 pulls the folding plate 26 at the lower end to ascend, so that the folding plate 26 at the lower end extends and blocks the sliding groove 21 below the support 22, thereby preventing dust in smoke from entering the sliding groove 21, causing the dust to fall into the meshing position of the transmission rod 42 at the bottom of the sliding groove 21 and the worm 4, reducing the friction force between the transmission rod 42 and the worm 4, improving the transmission effect between the transmission rod 42 and the worm 4, reducing the abrasion between the transmission rod 42 and the worm 4, and prolonging the service life between the transmission rod 42 and the worm 4.

the air inlet 11 of the electrostatic dust collector is communicated with the air preheater; the electrostatic dust collector is used for purifying and removing dust from the flue gas cooled by the air preheater;

The specific working process is as follows:

the worker controls the flue gas to enter the machine body 1 from the gas inlet 11 through the controller, and the controller controls the electrostatic dust collector to be electrified at the moment, so that an electric field enough for ionizing the gas is maintained between the corona electrode 16 and the dust collecting electrode plate 15; the negative ions and positive ions generated after the gas ionization are adsorbed on the dust passing through the electric field, so that the dust obtains electric charges and moves to electrodes with different polarities respectively and is deposited on the electrodes, and the dust adsorbing speed of the positive electrode is higher than that of the negative electrode, so that the dust collecting electrode plate 15 is used as the positive electrode, the corona electrode 16 is used as the negative electrode, most of dust is deposited on the dust collecting electrode plate 15, and a few of dust is adhered on the corona electrode 16 in the smoke introducing process; by calculating the accumulation time of the dust on the collecting electrode plate 15 and setting that the dust is to be accumulated and spread over the collecting electrode plate 15, the controller controls the ash removal mechanism to operate, so that the ash removal mechanism can scrape the dust on the collecting electrode plate 15, and the problem that the dust with high specific resistance is adhered to the collecting electrode plate 15 and is difficult to separate is avoided; the ash removing mechanism enables the dust to fall to the ash outlet 13 below the mounting frame 14 in the process of scraping the dust on the dust collecting electrode plate 15; after the dedusting of the flue gas is finished, a worker opens the dust outlet 13 and collects and processes the dust in the dust outlet 13, and the dust-raising prevention module positioned below the dust-cleaning mechanism can block the fallen dust, so that the fallen dust is prevented from being blown by the flue gas in the machine body 1 to generate secondary flying, and the dedusting effect of the electrostatic precipitator is improved; in the initial state, the dust cleaning plate 2 and the dust raising prevention module are positioned at the lower end of the dust collecting electrode plate 15, the movable blade 31 is pushed to be in a horizontal state by the telescopic module under the control of the controller, the blade 31 cannot be blown by smoke to rotate at the moment, and the included angle between the dust cleaning plate 2 and the bottom of the mounting groove 23 is 70-90 degrees; when the dust adhered on the surface of the collecting electrode plate 15 needs to be cleaned; the controller controls the telescopic module to contract, so that the telescopic module pulls the blades 31 to rotate downwards, the blades 31 rotate downwards, the C-shaped blades 31 incline downwards at the moment, and the inclined blades 31 are blown by smoke to rotate clockwise along with the smoke entering the machine body 1 passing between the two dust collecting electrode plates 15, so that the blades 31 drive the bracket 22 to ascend through the transmission module; so that the bracket 22 drives the dust-proof module to move upwards; when the bracket 22 is lifted to the uppermost end of the collecting electrode plate 15 through the setting of the PLC controller, the controller controls the electromagnetic chuck 24 to be electrified; the electromagnetic chuck 24 is enabled to adsorb the ash cleaning plate 2 and rotate towards the direction close to the dust collecting electrode plate 15 until the ash cleaning plate 2 is contacted with the dust collecting electrode plate 15, and at the moment, the controller controls the telescopic module to extend out; make flexible module promote the blade 31 tilt up of C font, the blade 31 of tilt up makes blade 31 drive cleaning rod 3 reverse rotation under the blowing of flue gas this moment, and make cleaning rod 3 drive support 22 through transmission module and descend, make support 22 drive deashing board 2 along collecting electrode plate 15 lapse, make deashing board 2 scrape the dust on collecting electrode plate 15 surface.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An air cleaning apparatus includes an electrostatic precipitator; the electrostatic precipitator further comprises:

the air conditioner comprises a machine body (1), wherein one end of the machine body (1) is provided with an air inlet (11); the other end of the machine body (1) is provided with an air outlet (12); the lower end of the machine body (1) is provided with an ash outlet (13); a mounting frame (14) is arranged above the ash outlet (13); the mounting frame (14) is fixedly connected with the inner wall of the machine body (1); a dust collecting electrode plate (15) is fixedly arranged at the upper end of the mounting frame (14); a spirally-wound corona electrode (16) is arranged in the machine body (1); the corona electrode (16) is fixedly connected with the machine body (1); the collecting electrode plate (15) is positioned at two sides of the corona electrode (16), and is characterized in that:

a dust removal mechanism; the ash removal mechanism is arranged on one surface of the dust collecting electrode plate (15) close to the corona electrode (16); the ash removal mechanism is used for cleaning dust adhered to the upper part of the dust collecting electrode plate (15);

2. An air cleaning apparatus according to claim 1, characterized in that: the deashing mechanism includes:

the ash cleaning plate (2), the two sides of the dust collecting electrode plate (15) are both provided with a chute (21); a bracket (22) is connected in the sliding groove (21); the upper ends of the two brackets (22) are respectively provided with a mounting groove (23); the ash cleaning plate (2) is rotationally connected to the opposite groove walls of the two mounting grooves (23) through torsion springs; the bottom of the mounting groove (23) is fixedly connected with an electromagnetic chuck (24); one surface of the ash cleaning plate (2) close to the electromagnetic chuck (24) is fixedly connected with an iron bar (25); the dust prevention module is arranged at the lower end of the bracket (22);

the cleaning rod (3), the cleaning rod (3) is rotatably connected with the machine body (1); the cleaning rod (3) is arranged in the center of the corona electrode (16); the upper end of the cleaning rod (3) is rotatably connected with a blade (31); one end of the blade (31) far away from the cleaning rod (3) is fixedly connected with the cleaning rod (3) through a telescopic module; the blade (31) is C-shaped;

the transmission module is arranged between the cleaning rod (3) and the ash cleaning plate (2); the cleaning rod (3) drives the ash cleaning plate (2) to ascend and descend in the sliding groove (21) through the transmission module.

3. An air cleaning apparatus according to claim 2, characterized in that: the surface of the cleaning rod (3) is connected with a connecting rod (32) in a sliding way; one end of the connecting rod (32) far away from the cleaning rod (3) is connected with a sleeve (33) in a sliding way; one end of the sleeve (33) far away from the connecting rod (32) is fixedly connected with a cleaning sleeve (35); an extension spring (34) is arranged in the sleeve (33); one end of the extension spring (34) is fixedly connected with the cleaning sleeve (35), and the other end of the extension spring is fixedly connected with the connecting rod (32); the cleaning sleeve (35) is in sliding contact with the corona electrode (16).

4. An air cleaning apparatus according to claim 3, characterized in that: the transmission module comprises a worm (4); the bracket (22) is in spiral connection with the worm (4); the lower end of the cleaning rod (3) is fixedly connected with a gear (41); a transmission rod (42) is rotationally connected in the sliding groove (21); threads are arranged at two ends of the transmission rod (42); one end of the transmission rod (42) is in spiral transmission with the worm (4), and the other end of the transmission rod is in spiral transmission with the gear (41).

5. An air cleaning apparatus according to claim 4, characterized in that: the telescopic module comprises a fixing rod (36) made of PA material; one end of the fixed rod (36) is hinged with the cleaning rod (3), and the other end of the fixed rod is provided with a groove (361); a telescopic rod (37) made of PA material is connected in the groove (361) in a sliding and sealing manner; one end of the telescopic rod (37) far away from the groove (361) is hinged with the blade (31); the telescopic rod (37) is fixedly connected with the bottom of the groove (361) through a tower-shaped spring (38); the bottom of the groove (361) is fixedly connected with an electromagnet (362); one end of the telescopic rod (37) close to the groove (361) is fixedly connected with an iron sheet.

6. An air cleaning apparatus according to claim 5, characterized in that: the dust prevention module comprises a folding plate (26); one end of the folding plate (26) is hinged with the bracket (22), and the other end of the folding plate is hinged with the mounting rack (14); the two adjacent folding plates (26) are hinged with each other; and PTFE membranes (261) are fixedly connected to two sides of the folding plate (26).

7. An air cleaning apparatus according to claim 6, characterized in that: the vertical section of the folding plate (26) is a right trapezoid; the folding plate (26) is inclined towards the collecting electrode plate (15) when it is extended.

8. An air cleaning apparatus according to claim 7, characterized in that: the lower end of the cleaning rod (3) is fixedly connected with a conical dust cover (43); the dust cover (43) is made of PTFE material; a through groove (431) is formed in the surface of the dust cover (43); the transmission rod (42) is connected in a rotating and sealing mode in the through groove (431).

9. An air cleaning apparatus according to claim 8, characterized in that: the inner wall of the sliding chute (21) is connected with a corrugated sheet (211) made of PTFE material in a sliding manner; the number of the corrugated sheets (211) is at least two; one end, far away from each other, of each of the two corrugated sheets (211) is fixedly connected with the groove wall of the sliding groove (21), and one end, close to each other, of each of the two corrugated sheets (211) is fixedly connected with the support (22).

10. An air purification system characterized by: the air purification system comprising an air purification apparatus as claimed in any one of claims 1 to 9, the air purification system further comprising: an air preheater; the air preheater is communicated with a boiler; the air preheater is used for recovering the heat of the flue gas and reducing the temperature of the flue gas;

the air inlet (11) of the electrostatic dust collector is communicated with the air preheater; the electrostatic dust collector is used for purifying and removing dust from the flue gas cooled by the air preheater;

the induced draft fan is communicated with an air outlet of the electrostatic dust collector; the induced draft fan is used for pumping out air after dust removal in the electrostatic dust collector; flue gas in the pressure boiler enters an electrostatic dust collector through an air preheater to carry out flue gas dust removal;