CN114534939A

CN114534939A - Water film vortex electric dust remover

Info

Publication number: CN114534939A
Application number: CN202210156045.2A
Authority: CN
Inventors: 陈祖云
Original assignee: Jiangxi University of Science and Technology
Current assignee: Jiangxi University of Science and Technology
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-05-27

Abstract

The invention discloses a water film eddy current electrostatic precipitator, which comprises a Venturi tube, wherein the Venturi tube comprises a contraction section, a small-caliber section of the contraction section is communicated with a throat section, the calibers of two ends of the throat section are the same, the throat section is communicated with an expansion section, the caliber of one end, far away from the throat section, of the expansion section is larger than that of the throat section, and a plurality of first nozzles are arranged on the throat section; the cyclone cylinder comprises a cyclone cylinder body and is characterized in that a plurality of second nozzles are fixedly connected to the inner side wall of the cyclone cylinder body, the second nozzles face the side wall of the cyclone cylinder body, an expansion section is communicated with the cyclone cylinder body, a top cover is fixedly connected to the top end of the cyclone cylinder body, an exhaust pipe is arranged on the top cover, an exhaust fan is installed on the exhaust pipe, a water outlet is formed in the bottom end of the cyclone cylinder body, the water outlet is communicated with a circulating water tank, and the circulating water tank is communicated with the first nozzles and the second nozzles respectively. The device has simple structure, obviously reduces the dust content in the gas, improves the cleanliness of the gas and meets the requirement of gas dust removal.

Description

Water film vortex electric dust remover

Technical Field

The invention relates to the technical field of dust collectors, in particular to a water film eddy current electric dust collector.

Background

The main pollutants in the air are inhalable particles, when the inhalable particles are inhaled by people, if the diameters of the inhalable particles are smaller, the parts which can enter respiratory tracts are deeper, and the inhalable particles are mainly generated through two ways: the first approach is to discharge into the atmosphere without purification in various industrial processes (metallurgy, internal combustion engines, combustion of coal, chemical production, etc.); the second approach is to form ultrafine particles, aerosol, and the like in the atmosphere. Under the background that the country pays more and more attention to environmental governance, the requirement on air quality is higher and higher.

Disclosure of Invention

The invention aims to provide a water film vortex electric dust remover, which solves the problems in the prior art, reduces the dust content in gas, improves the cleanliness of the gas and meets the requirements of gas dust removal.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a water film eddy current electric dust remover, which comprises:

the Venturi tube comprises a contraction section, the contraction section is provided with a large-caliber end and a small-caliber end, the small-caliber section of the contraction section is communicated with a throat pipe section, calibers of two ends of the throat pipe section are the same, the throat pipe section is communicated with an expansion section, the expansion section is far away from the caliber of one end of the throat pipe section is larger than the caliber of the throat pipe section, a plurality of first nozzles are arranged on the throat pipe section, and the water outlet ends of the first nozzles face towards the inside of the throat pipe section.

The cyclone comprises a cyclone cylinder, wherein a plurality of second nozzles are fixedly connected to the inner side wall of the cyclone cylinder, the second nozzles face the side wall of the cyclone cylinder, the expansion section is communicated with the cyclone cylinder, the top end of the cyclone cylinder is fixedly connected with a top cover, an air outlet is formed in the top cover, the air outlet is communicated with an exhaust pipe, an exhaust fan is installed on the exhaust pipe, a water outlet is formed in the bottom end of the cyclone cylinder, the water outlet is communicated with a circulating water tank, and the circulating water tank is respectively communicated with the first nozzles and the second nozzles.

Preferably, the throat pipe section is provided with a plurality of through holes, the first nozzle penetrates through the through holes, a first water pump is installed between the first nozzle and the circulating water tank, the first nozzle, the first water pump and the circulating water tank are communicated through a water pipe, and an electromagnetic valve is installed on the water pipe between the first water pump and the circulating water tank.

Preferably, a second water pump is communicated between the second nozzle and the circulating water tank, the second nozzle, the second water pump and the circulating water tank are communicated through the water pipe, the water pipe is arranged in the side wall of the cyclone in a penetrating manner, and the electromagnetic valve is arranged on the water pipe between the second water pump and the circulating water tank.

Preferably, a filter is installed at one end of the water pipe close to the circulating water tank, and the filter is respectively communicated with the first water pump and the second water pump through the water pipe.

Preferably, a straight pipe section is communicated between the expansion section and the cyclone cylinder, a plurality of layers of vibrating wire grids are fixedly connected in the straight pipe section, a sewage discharge outlet is formed in the straight pipe section and is located at the bottom of the vibrating wire grids, a sewage discharge pipe is communicated with the sewage discharge outlet, and the sewage discharge pipe is communicated with the circulating water tank.

Preferably, an air volume adjusting valve is installed on the straight pipe section.

Preferably, the large-caliber end of the contraction section is fixedly connected with an extension section, the extension section is fixedly provided with a blower, and the air outlet end of the blower extends into the extension section.

Preferably, an electrode penetrates through the top cover and is electrically connected with a high-voltage power supply.

Preferably, the electrode comprises a trunk, a plurality of branches are fixedly connected to the trunk, the branches are divided into a plurality of layers, each layer of the branches is four in total, and each layer of the branches are in the same plane.

Preferably, the circulating water tank is provided with a slurry outlet.

The invention discloses the following technical effects: the device is provided with an exhaust fan, the exhaust fan generates negative pressure in the device after being started, gas enters a Venturi tube, the Venturi tube comprises a contraction section, a throat pipe section and an expansion section, the speed of dust-containing airflow is gradually increased after entering the contraction section of the Venturi tube, the airflow speed is increased to the maximum value after the airflow enters the throat pipe section, water flow is sprayed out to the throat pipe section from a first nozzle, the water flow is changed into a fog drop shape due to impact of the high-speed dust-containing airflow in the throat pipe section and is moistened, the speed of the moistened dust particles is reduced after the airflow enters the expansion section and is gradually combined into larger dust-containing particles, after entering a cyclone cylinder, the mixed airflow can be changed into a circular motion state from a linear motion state, when the dust particles in the mixed airflow touch the side wall of the cyclone cylinder, the inertia force can be lost and gradually adhered to the side wall of the cyclone cylinder, a second nozzle sprays water flow to the side wall of the cyclone cylinder, the dust particles adhered to the side wall of the cyclone cylinder are washed, flow to the water outlet and flow to the circulating water tank through the water outlet. The device has simple structure, obviously reduces the dust content in the gas, improves the cleanliness of the gas and meets the requirement of gas dust removal.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic structural view of a water film eddy current electrostatic precipitator of the present invention.

FIG. 2 is a schematic diagram of an electrode structure according to the present invention.

Fig. 3 is a top view of an electrode of the present invention.

FIG. 4 is a schematic diagram of the vibrating wire grid structure of the present invention.

FIG. 5 is a schematic structural view of a venturi tube according to embodiment 2 of the present invention.

FIG. 6 is a view showing the position of a first nozzle in embodiment 2 of the present invention.

FIG. 7 is a schematic diagram showing the operation of the first nozzle in example 2 of the present invention.

Fig. 8 is a schematic structural diagram of a vibrating wire grid in embodiment 2 of the present invention.

Fig. 9 is a diagram of a vibrating wire grid in accordance with embodiment 2 of the present invention.

Fig. 10 is a diagram showing a second nozzle line arrangement in embodiment 2 of the present invention.

Fig. 11 shows a second water pump and a second nozzle according to embodiment 2 of the present invention.

Fig. 12 is a schematic view of a corona electrode structure in embodiment 2 of the present invention.

Wherein, 1, a contraction section; 2. a throat section; 3. an expansion section; 4. a first nozzle; 5. a cyclone; 6. a second nozzle; 7. a top cover; 8. an exhaust duct; 9. an exhaust fan; 10. a water outlet; 11. a circulating water tank; 12. a first water pump; 13. an electromagnetic valve; 14. a second water pump; 15. a filter; 16. a straight pipe section; 17. vibrating wire grids; 1701. welding points; 1702. a threaded iron bar; 1703. nylon wire; 18. a sewage draining outlet; 19. a blow-off pipe; 20. an air volume adjusting valve; 21. an extension section; 22. a blower; 23. a high voltage power supply; 24. a trunk; 25. branch and stem; 26. a slurry outlet; 27. bur; 28. pricking with a sharp point; 29. and (4) a corona electrode.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Example 1

Referring to fig. 1 to 4, the present invention provides a water film eddy current electrostatic precipitator, comprising:

the Venturi tube comprises a contraction section 1, the contraction section 1 is provided with a large-caliber end and a small-caliber end, the small-caliber section of the contraction section 1 is communicated with a throat section 2, the calibers of two ends of the throat section 2 are the same, the throat section 2 is communicated with an expansion section 3, the caliber of one end, far away from the throat section 2, of the expansion section 3 is larger than the caliber of the throat section 2, the throat section 2 is provided with a plurality of first nozzles 4, and the water outlet ends of the first nozzles 4 face the inside of the throat section 2; the dusty airflow enters the contraction section 1 of the Venturi tube, because the overflowing area of the contraction section 1 is smaller and smaller, the static pressure in the contraction section 1 is continuously converted into dynamic pressure to increase the speed of the dusty airflow in the tube, when the airflow enters the position of the throat pipe section 2, the cross section area of the guide pipe is reduced to the minimum, the dynamic pressure of the dusty airflow is increased to the maximum, namely the airflow speed is increased to the maximum, the dusty airflow enters the expansion section 3, the cross section area of the guide pipe is continuously increased to reduce the dynamic pressure of the dusty airflow in the tube, the speed of the dusty airflow is reduced, water flow is sprayed out of the first nozzle 4 to the throat pipe section 2, because of the dusty airflow with high flow speed in the throat pipe section 2, the water sprayed out of the first nozzle 4 is impacted by the high-speed dust flow to be in a fog droplet shape and is fully mixed with the dusty airflow, dust particles are wetted finally, when the airflow enters the expansion section 3, the speed of the wetted particles is reduced, gradually coalesce into larger dust-containing particles.

The cyclone comprises a cyclone cylinder 5, wherein a plurality of second nozzles 6 are fixedly connected to the inner side wall of the cyclone cylinder 5, the second nozzles 6 face the side wall of the cyclone cylinder 5, an expansion section 3 is communicated with the cyclone cylinder 5, the top end of the cyclone cylinder 5 is fixedly connected with a top cover 7, an air outlet is formed in the top cover 7 and is communicated with an exhaust pipe 8, an exhaust fan 9 is installed on the exhaust pipe 8, a water outlet 10 is formed in the bottom end of the cyclone cylinder 5, the water outlet 10 is communicated with a circulating water tank 11, and the circulating water tank 11 is respectively communicated with a first nozzle 4 and a second nozzle 6; the exhaust fan 9 is opened to exhaust air outwards, so that the device generates negative pressure, the airflow enters from the end of the contraction section 1, the airflow containing water and dust particles enters into the cyclone cylinder 5 from the expansion section 3, in the embodiment, the lower part of the cyclone cylinder 5 is in an inverted cone shape, namely, the water outlet 10 is the part with the smallest diameter of the cyclone cylinder 5, the expansion section 3 is connected with the tangent part of the cyclone cylinder 5, when the mixed airflow flows into the cyclone cylinder 5 from the tangential air inlet, the linear motion state is changed into the circular motion state, the rotating mixed airflow flows downwards from the side wall of the cyclone cylinder 5 to the cone direction along the cyclone cylinder 5 and is in a spiral shape, when the dust particles in the mixed airflow touch the side wall of the cyclone cylinder 5, the inertia force is lost to be gradually adhered to the side wall of the cyclone cylinder 5, the circulating water tank 11 provides water source for the first nozzle 4 and the second nozzle 6, and the second nozzle 6 sprays water flow to the side wall of the cyclone cylinder 5, the water flow washes dust particles adhering to the sidewall of the cyclone 5, and the washed water flows toward the drain 10 and flows toward the circulation water tank 11 through the drain 10.

According to a further optimization scheme, the throat pipe section 2 is provided with a plurality of through holes, a first nozzle 4 penetrates through the through holes, a first water pump 12 is arranged between the first nozzle 4 and the circulating water tank 11, the first nozzle 4, the first water pump 12 and the circulating water tank 11 are communicated through a water pipe, and an electromagnetic valve 13 is arranged on the water pipe between the first water pump 12 and the circulating water tank 11; the first water pump 12 provides a pressurized water source for the first nozzle 4, so that the water flow sprayed by the first nozzle 4 is finer, the mixing effect with the dust-containing air flow is increased, and the electromagnetic valve 13 is used for adjusting the water flow of the first nozzle 4.

According to a further optimized scheme, a second water pump 14 is communicated between the second nozzle 6 and the circulating water tank 11, the second nozzle 6, the second water pump 14 and the circulating water tank 11 are communicated through a water pipe, the water pipe penetrates through the side wall of the cyclone 5, and an electromagnetic valve 13 is arranged on the water pipe between the second water pump 14 and the circulating water tank 11; the second water pump 14 provides a pressurized water source to the second nozzle 6, increasing the cleaning effect of the washing cyclone 5 by the water flow from the second nozzle 6.

According to a further optimized scheme, a filter 15 is arranged at one end, close to the circulating water tank 11, of the water pipe, and the filter 15 is respectively communicated with the first water pump 12 and the second water pump 14 through the water pipe; the filter 15 filters the water drawn from the circulation water tank 11 to make the water flowing to the first and

second nozzles

4 and 6 cleaner.

According to a further optimized scheme, a straight pipe section 16 is communicated between the expansion section 3 and the cyclone cylinder 5, a plurality of layers of vibrating wire grids 17 are fixedly connected in the straight pipe section 16, a sewage discharge outlet 18 is formed in the straight pipe section 16, the sewage discharge outlet 18 is positioned at the bottom of the vibrating wire grids 17, a sewage discharge pipe 19 is communicated with the sewage discharge outlet 18, and the sewage discharge pipe 19 is communicated with the circulating water tank 11; when the mixed airflow passes through the vibrating wire grid 17, the wires in the vibrating wire grid 17 vibrate to generate sound waves, dust particles vibrate due to the influence of the sound waves generated by the vibrating wire grid 17, the smaller the diameter of the dust particles is, the higher the vibration speed of the dust particles is, and therefore the particles with different particle sizes are agglomerated at different speeds, small particles in the mixed airflow are continuously close to large particles to cause collision and agglomeration and further sedimentation, and the settled dust particles are mixed with water to be in a slurry state, flow out of the sewage outlet 18 and flow to the circulating water tank 11 through the sewage outlet 19.

In a further optimized scheme, the straight pipe section 16 is provided with an air volume adjusting valve 20, and the air volume adjusting valve 20 is used for adjusting the air volume passing through the straight pipe section 16.

According to the further optimization scheme, the large-caliber end of the contraction section 1 is fixedly connected with the extension section 21, the extension section 21 is fixedly provided with the air blower 22, and the air outlet end of the air blower 22 extends into the extension section 21; the blower 22 blows air into the extension section 21, so that the venturi tube reaches the maximum ventilation state quickly.

In a further optimized scheme, an electrode is arranged in the top cover 7 in a penetrating manner and is electrically connected with a high-voltage power supply 23; the high-voltage power supply supplies high voltage to the electrodes to ionize air into ions, then the ions move directionally under the action of an electric field force, collide with dust particles in the process, attach to the dust particles and transfer charges to the dust particles, and after the dust particles are charged, the charged dust particles move towards the side wall of the cyclone cylinder 5 under the action of electrostatic force and airflow and are finally washed away by water flow.

According to a further optimized scheme, the electrode comprises a trunk 24, a plurality of branches 25 are fixedly connected to the trunk 24, the branches 25 are divided into a plurality of layers, the number of the branches 25 in each layer is four, and the branches 25 in each layer are in the same plane; in the present embodiment, the lengths of the branches 25 in the plurality of layers of branches 25 are continuously increased from bottom to top, the shape of each layer of branch 25 is kept consistent with the shape of the side wall of the cyclone 5, and for increasing the uniformity of the electric field, the included angle between every two adjacent branches 25 is 90 °, and by the above arrangement, the electric field generated by the trunk 24 and the branches 25 can be more uniform.

In a further optimized scheme, the circulating water tank 11 is provided with a slurry outlet 26; the dedusted water in the circulation water tank 11 is precipitated to form slurry, which is discharged through a slurry outlet 26.

The using method of the device comprises the steps that the exhaust fan 9 is started, negative pressure is generated in the device, airflow enters from the extension section 21, enters the throat section 2 after passing through the contraction section 1, the speed of the dust-containing airflow reaches the maximum value at the moment, water flow with high pressure is sprayed out from the first nozzle 4 under the action of the first water pump 12, the water sprayed out from the first nozzle 4 is impacted by the high-speed dust flow to be changed into a fog drop shape and is fully mixed with the dust-containing airflow, dust particles are wetted, and after the airflow enters the expansion section 3, the speed of the wetted dust particles is reduced and gradually become larger dust particles; after the mixed airflow enters the straight pipe section 16, the vibrating wire grid 17 is impacted to generate vibration and sound waves, dust particles generate vibration due to the influence of the sound waves generated by the vibrating wire grid 17, small particles in the mixed airflow are continuously close to large particles to cause collision and condensation and then settle, the settled dust particles are mixed with water and are in a slurry state, the mixed water flows out of the sewage discharge outlet 18 and flows to the circulating water tank 11 through the sewage discharge pipe 19, and primary purification is completed. When the mixed airflow flows into the cyclone 5 from the tangential air inlet through the straight pipe section 16, the linear motion state is changed into the circular motion state, the rotating mixed airflow starts to flow from the side wall of the cyclone 5 to the cone direction along the cyclone 5 and is spiral, and when dust particles in the mixed airflow touch the wall surface, the inertia force is lost and the dust particles gradually adhere to the side wall of the cyclone 5. The electrode electrically connected with the high voltage power supply 23 ionizes the air to generate ions, the ions collide with dust particles, attach to the dust particles and transfer charges to the dust particles, when the dust particles are charged, the ions move towards the side wall of the cyclone cylinder 5 under the action of electrostatic force and airflow, the second nozzle 6 sprays water flow towards the side wall of the cyclone cylinder 5, the water flow washes the dust particles adhered to the side wall of the cyclone cylinder 5, the washed water flows towards the water outlet 10 and flows towards the circulating water tank 11 through the water outlet 10, mud is formed by sedimentation in the circulating water tank 11, and the mud is discharged through the mud outlet 26.

Example 2

Referring to fig. 5-12, in the embodiment, the low-resistance venturi tube is circular because four corners of the cross section of the rectangular pipeline cannot be effectively covered by water mist, the dust removal effect is poor, the rectangular pipeline is complex to machine relative to the circular pipeline, the machining cost is high, more materials are consumed, and the pipeline materials are all machined and manufactured by iron scales.

The low resistance venturi includes constriction 1, and constriction 1 has big aperture end and small aperture end, and the small aperture section intercommunication of constriction 1 has

throat section

2, and 2 both ends bores of throat section are the same, and throat section 2 intercommunication has expansion section 3, and the bore that throat section 2 one end was kept away from to expansion section 3 is greater than 2 bores of throat section, is equipped with a plurality of first nozzles 4 on the throat section 2, and the play water end of first nozzle 4 is towards in the throat section 2.

The dust-containing gas treated by the device can be adjusted according to the requirement, and the rated dust-containing gas treated by the device is 850m³The design is carried out, the gas velocity of the throat section 2 of the low-resistance Venturi tube is selected in consideration of the influences of dust concentration, particle size, gas treatment quantity, liquid physical and chemical properties, efficiency and resistance of a dust remover and the like, and the geometric parameters of the low-resistance Venturi tube are determined to meet the basic requirements of high dust removal efficiency and small fluid resistance. While the throat section 2 of the traditional low-resistance Venturi water film dust collector has extremely high wind speed, and the throat has dust particles with submicron granularityThe wind speed of the section 2 is generally 90-120m/s, and the resistance is high. Therefore, the air speed of the throat pipe section 2 of the low-resistance Venturi electrostatic water film dust collector is determined to be 30 m/s. The structural geometry of the low resistance venturi is shown in figure 5.

The structural parameters of the low resistance venturi such as conduit length, diameter and cross-sectional area have been calculated as shown in table 1.

TABLE 1

A plurality of through-holes have been seted up to throat section 2, wear to be equipped with the water pipe in the through-hole, and the water pipe intercommunication has first nozzle 4, installs first water pump 12 between first nozzle 4 and the circulating water tank 11, leads to pipe intercommunication between first nozzle 4, first water pump 12 and the circulating water tank 11, installs solenoid valve 13 on the water pipe between first water pump 12 and the circulating water tank 11.

The difference between the embodiment and the embodiment 1 is that the number of the first nozzles 4 is one, the water pipes are arranged in the extension section 21 in a penetrating manner, the position of the first nozzle 4 is located at the center of the contraction section 1, the water outlet direction faces the throat section 2, and the axial spraying of radial outward spraying is adopted, so that the relative speed of the dispersed water mist particles and the air flow can be improved, and the water mist particles are uniformly distributed on the whole throat section as much as possible. In the embodiment, the wind speed in the throat section 2 of the low-resistance Venturi tube is at a lower value, and the atomization pressure of the first nozzle 4 is increased to improve the atomization effect so as to improve the dust removal efficiency. The axial spraying of the radial outer spray is that a single first nozzle 4 is arranged at the center of the contraction section 1, the water spraying direction is consistent with the dust-containing air flow, and the water spraying range covers the radial range of the throat section 2.

In the embodiment, the first nozzle 4 for radially spraying outwards the low-resistance venturi is arranged at the central position of the contraction section 1, the first nozzle 4 is arranged on the central axis of the contraction section 1, the nozzle of the first nozzle 4 is 16cm away from the center of the front side of the throat pipe section 2, and the atomization angle can be changed by adjusting the water supply pressure valve. As shown in fig. 6, when the atomization angle is 80 °, the water mist particles sprayed from the first nozzle 4 bounce back to the centerline of the throat section 2 on the inner wall of the convergent section 1.

The working mechanism is shown in fig. 7, high-pressure water is sprayed by the first nozzle 4 to form uniform water mist along the center of the contraction section 1, the water mist particles are distributed on the whole throat section 2, and a negative pressure area is formed behind the spray jet. When the dust-containing air flow passes through the contraction section 1, the flow speed begins to increase, the dust-containing air flow can be sucked into a spraying area by a spraying field in the low-resistance Venturi tube and a negative pressure field behind the low-resistance Venturi tube, the dust-containing flow speed is further increased, the diffusion range is enlarged, and water mist particles and the dust-containing air flow are fully contacted and mixed. When the dust reaches the throat section 2, the air flow speed is maximum, the collision probability is further increased, the flow speed is reduced in the expansion section 3, the fog particles and dust-containing air flow are further collided and condensed to form dust-containing fog drops, and most of dust is trapped when the fog particles collide with a vibrating wire grid arranged in the inlet section of the water film dust collector.

A straight pipe section 16 is communicated between the expansion section 3 and the cyclone cylinder 5, a plurality of layers of vibrating wire grids 17 are fixedly connected in the straight pipe section 16, a sewage discharge outlet 18 is formed in the straight pipe section 16, the sewage discharge outlet 18 is positioned at the bottom of the vibrating wire grids 17, a sewage discharge pipe 19 is communicated with the sewage discharge outlet 18, and the sewage discharge pipe 19 is communicated with the circulating water tank 11.

In this embodiment, the vibrating wire grid 17 uses nylon wire with a diameter of 0.3mm as the vibrating wire. Fig. 8 and 9 are a schematic structural diagram and a physical diagram of the vibrating wire grid 17, respectively. The vibrating wire grid frame has the parameters of 190mm multiplied by 190mm, the vibrating wire grid frame is formed by welding threaded iron bars 1702 with the diameter of 10mm, welding points 1701 are arranged at the welding positions of the two threaded iron bars 1702, then nylon wires 1703 are wound along the threads, and the winding density meets the industrial requirements.

The dust-containing fog particles are atomized and condensed by the Venturi tube, and play an important role in filtering and trapping dust. The vibrating wire grid arranged in the inlet section of the water film dust collector is an influence factor influencing the dust removal efficiency, so the manufacturing requirement of the vibrating wire grid must meet the industrial requirement. The number of vibrating wire grids, the distance between vibrating wire wires, the material and the like all affect the dust removal efficiency and the resistance loss, and the low-resistance Venturi coupling vibrating wire grids play a role in coagulation and dust removal.

A plurality of second nozzles 6 of fixed connection on the 5 inside walls of cyclone, second nozzle 6 towards 5 side walls of cyclone, expansion section 3 and cyclone 5 intercommunication, 5 top fixedly connected with top caps 7 of cyclone, the air outlet has been seted up on top cap 7, the air outlet intercommunication has exhaust pipe 8, install exhaust fan 9 on the exhaust pipe 8, outlet 10 has been seted up to 5 bottoms of cyclone, outlet 10 intercommunication has circulating water tank 11, circulating water tank 11 communicates with first nozzle 4 and second nozzle 6 respectively.

The wet water film dedusting cyclone cylinder forms a layer of water film which flows continuously on the cylinder wall of the cyclone cylinder 5 through the water spraying of the second nozzle 6, so as to enhance the adsorption of the cylinder wall of the cyclone cylinder 5 to dust. The dust-containing water mist is collected by a low-resistance Venturi tube internal vibrating chord 17, tangentially enters the cyclone cylinder 5, then carries out high-speed circular motion, moves towards the cylinder wall under the action of centrifugal force, is easily captured by a flowing water film and flows into a circulating water tank 11 at the bottom of the dust remover. Unlike cyclone dust collector, which produces secondary dust, the dust will flow into the bottom of the dust collector along the wall of the cylinder under the action of water film. Meanwhile, the water film dust collecting electrode can enhance the trapping of charged dust, and the problem that the dust collecting electrode of the electric dust collector is difficult to remove dust is solved. A conventional ash bucket is modified into the circulation water tank 11, and the first and second water pumps 12 and 14 take the artificial membranes from the circulation water tank 11. Therefore, water can be recycled, and resources are saved.

The water film has strong adsorption effect on dust, but the uniformity of the water film is always one of the difficulties of the dust remover. The mode that the second nozzle 6 is arranged to generate a water film along the tangential direction of the cylinder wall is adopted, so that the state of the water film is stable; considering that the quality of the water film is affected by the number of the nozzles, the number of the nozzles is too large, the pipeline redundancy is caused, the flow field resistance is increased, the number of the second nozzles 6 is set to be four, the sealing movable joint 601 and the universal joint pipe 602 are installed between the water pipe and the second nozzles 6, and the second nozzles 6 are communicated with the universal joint pipe 602.

A second water pump 14 is communicated between the second nozzle 6 and the circulating water tank 11, the second nozzle 6, the second water pump 14 and the circulating water tank 11 are communicated through a water pipe, the water pipe penetrates through the side wall of the cyclone cylinder 5, and an electromagnetic valve 13 is installed on the water pipe between the second water pump 14 and the circulating water tank 11.

To facilitate a stable flow, the present invention uses the second water pump 14 to create a water film. The diameter of the cylinder of the water film eddy current electric dust remover is determined to be 0.5m, the effective length of the water film is about 1m, the flow of a calculated water pump is 15L/min, a 1ZDB65 type self-suction clean water pump is selected, the power is 0.75kW, the rated flow is 20L/min, and the rated lift is 20 m.

A filter 15 is arranged at one end of the water pipe close to the circulating water tank 11, and the filter 15 is respectively communicated with the first water pump 12 and the second water pump 14 through the water pipe.

In order to ensure that the water film is tightly attached to the cylinder wall, a flat duckbill-shaped second nozzle 6 is arranged along the cylinder wall. The second nozzle 6 is arranged according to the pipeline arrangement mode shown in figure 10, the duckbill type nozzle has the best film forming effect, and can generate a uniform, continuous and stable water film with larger flow. Under the condition of installing a water pump, the positions of the four second nozzles 6 on the cylinder wall have different line lengths relative to the water pump, namely the power water supply pressure is different, and the arrangement mode of the pipelines adopts a series-parallel connection mixed mode, as shown in fig. 11. Therefore, the water film pipeline of the dust remover barrel adopts a serial-parallel mixed mode pipeline structure.

An electrode is arranged in the top cover 7 in a penetrating way, and the electrode is electrically connected with a high-voltage power supply 23. The pole comprises a trunk 24, a plurality of branches 25 are fixedly connected to the trunk 24, the branches 25 are divided into a plurality of layers, the number of the branches 25 in each layer is four, and the branches 25 in each layer are in the same plane.

In the embodiment, because of the particularity of installing the corona electrode in the flow field inside the cyclone 5, a cage type needling corona electrode wire is adopted. Because the cylinder body of the cyclone cylinder 5 is a cone, the electrode is divided into four layers according to the scaling; the heteropolar distance between the dust collecting electrode and the corona electrode 29 is controlled to be about 120mm, the length of the bur 27 is 75mm, the bur is reduced to about 53mm, and the length of the spine 28 is 10 mm. According to the potential gradient distribution rule, the electric field which is annularly and uniformly distributed is achieved as far as possible.

Cage acupuncture corona wire: on the basis of the prickles 27, a cage-type design is added, the whole potential of the three-dimensional space around the corona wire is relatively uniform, the average field intensity of an electric field is improved, and the electric field discharges to the anode plate through the tip.

Under the condition of a given different polar distance, the negative high-voltage direct-current voltage of the corona electrode is not suitable to exceed 60kV, otherwise, flashover spark discharge, anode plate breakdown short circuit and even electric arc risk occur, so the highest operating voltage of the high-voltage power supply of the water film eddy current electric dust remover is determined to be 60 kV. A ZPS-100 type negative high-voltage direct-current power supply is adopted, 220V alternating current is input, the output voltage is 0 kV-70 kV, and the output power is 30W. The linear stable rising of the output high voltage can be realized, and the voltage and the current are stably output.

The insulation method mainly comprises the steps of insulating a wind port section at a cathode corona polar line, grounding a high-voltage power supply, grounding an anode cylinder wall and grounding a water pump fan. The cathode corona polar line enters the cylinder from the axis right above the air outlet, a polytetrafluoroethylene tube with the outer diameter of 4cm and the inner diameter of 1cm, namely the wall thickness of 1.5cm is sleeved outside the flow guide screw-thread steel, the insulation length is about 1m, and the cathode corona polar line is prevented from being punctured at a place (mainly a section of a galvanized exhaust pipe) outside a discharge area. The high-voltage output end of the high-voltage power supply is wrapped by a polytetrafluoroethylene plastic pipe, but charges can be accumulated on the shell of the machine body, so that the shell must be grounded in the operation process. Besides the grounding wires which are equipped per se, a plurality of grounding wires are additionally arranged. The wall of the anode cylinder is the direct recipient of the corona polar discharge charges and therefore must guarantee good grounding performance in any case. Therefore, a plurality of grounding wires are arranged around the cylinder wall, particularly in the conical discharge area and the air inlet insulation area. For the dust remover device can move flexibly, the water pump and the fan are welded in the integral angle steel frame of the dust remover and are grounded, but the shell of the dust remover is still provided with a grounding wire independently.

In the embodiment, the basic particles discharged by the gas-water mixture are mainly occupied by negative ions, and the electronegativity of water molecules is strong. Gas-water mixture discharges produce more species (positive and negative ions and hydrated electrons) than air discharges. The number of collisions per second in the mist gas is greater than the number of collisions in air. The discharge of the air-water mixture is more beneficial to charge and has higher voltage, and the corona charge dust removal of the air-water mixture is more effective than that of the air. The water mist charging is subjected to three stages of induction charging, corona charging transition and corona charging; the influence of corona voltage on the water mist charge-to-mass ratio, the water mist cloud current and the power of injected water mist cloud is the largest. The water mist can improve the dust charge efficiency and improve the charge dust-containing water mist capturing capacity of the vibrating wire grid; the dust removal efficiency of the electrified vibrating wire grid is high. And (3) simulating a gas-liquid-solid three-phase, wherein dust particles move to an outlet direction orderly along with the airflow after passing through a spray area, and the vibrating wire grid effectively filters dust-containing water mist particles. After the spray is added, the dust collector has obviously improved dust particle trapping effect. The dust settling rate of the dust collector of this example for fine dust was 93.14%, and the dust settling rate for ordinary talc was 99.50%. The device has high efficiency of removing fine dust, convenient and fast ash removal without secondary dust raising and better application prospect.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. A water film eddy current electric dust remover is characterized by comprising:

the Venturi tube comprises a contraction section (1), the contraction section (1) is provided with a large-caliber end and a small-caliber end, the small-caliber end of the contraction section (1) is communicated with a throat pipe section (2), calibers of two ends of the throat pipe section (2) are the same, the throat pipe section (2) is communicated with an expansion section (3), the caliber of one end, far away from the throat pipe section (2), of the expansion section (3) is larger than the caliber of the throat pipe section (2), the throat pipe section (2) is provided with a plurality of first nozzles (4), and the water outlet end of each first nozzle (4) faces into the throat pipe section (2);

the cyclone-type air conditioner comprises a cyclone cylinder (5), wherein a plurality of second nozzles (6) are fixedly connected to the inner side wall of the cyclone cylinder (5), the second nozzles (6) face the side wall of the cyclone cylinder (5), the expansion section (3) is communicated with the cyclone cylinder (5), a top cover (7) is fixedly connected to the top end of the cyclone cylinder (5), an air outlet is formed in the top cover (7), the air outlet is communicated with an exhaust pipe (8), an exhaust fan (9) is installed on the exhaust pipe (8), a water outlet (10) is formed in the bottom end of the cyclone cylinder (5), the water outlet (10) is communicated with a circulating water tank (11), and the circulating water tank (11) is communicated with the first nozzles (4) and the second nozzles (6) respectively.

2. The water film eddy current electrostatic precipitator of claim 1, wherein: a plurality of through-holes have been seted up in throat section (2), wear to be equipped with in the through-hole first nozzle (4), first nozzle (4) with install first water pump (12) between circulating water tank (11), first nozzle (4) first water pump (12) with through water pipe intercommunication between circulating water tank (11), first water pump (12) with between circulating water tank (11) install solenoid valve (13) on the water pipe.

3. The water film eddy current electrostatic precipitator of claim 2, wherein: a second water pump (14) is communicated between the second nozzle (6) and the circulating water tank (11), the second nozzle (6), the second water pump (14) and the circulating water tank (11) are communicated through a water pipe, the water pipe is arranged in the side wall of the cyclone cylinder (5) in a penetrating mode, and the electromagnetic valve (13) is arranged on the water pipe between the second water pump (14) and the circulating water tank (11).

4. The water film eddy current electrostatic precipitator of claim 3, wherein: and a filter (15) is arranged at one end of the water pipe close to the circulating water tank (11), and the filter (15) is respectively communicated with the first water pump (12) and the second water pump (14) through the water pipe.

5. The water film eddy current electrostatic precipitator of claim 1, wherein: the cyclone-type wind power generation device is characterized in that a straight pipe section (16) is communicated between the expansion section (3) and the cyclone cylinder (5), a plurality of layers of vibrating wire grids (17) are fixedly connected in the straight pipe section (16), a sewage discharge outlet (18) is formed in the straight pipe section (16), the sewage discharge outlet (18) is located at the bottom of the vibrating wire grids (17), a sewage discharge pipe (19) is communicated on the sewage discharge outlet (18), and the sewage discharge pipe (19) is communicated with the circulating water tank (11).

6. The water film eddy current electrostatic precipitator of claim 5, wherein: and an air volume adjusting valve (20) is installed on the straight pipe section (16).

7. The water film eddy current electrostatic precipitator of claim 1, wherein: the heavy-calibre end fixedly connected with of contraction section (1) extends section (21), fixed mounting has forced draught blower (22) on extension section (21), the air-out end of forced draught blower (22) stretches into in extension section (21).

8. The water film eddy current electrostatic precipitator of claim 1, wherein: an electrode penetrates through the top cover (7), and the electrode is electrically connected with a high-voltage power supply (23).

9. The water film eddy current electrostatic precipitator of claim 8, wherein: the electrode comprises a trunk (24), wherein a plurality of branches (25) are fixedly connected to the trunk (24), the branches (25) are divided into a plurality of layers, each layer is composed of four branches (25), and each layer is composed of the branches (25) in the same plane.

10. The water film eddy current electrostatic precipitator of claim 1, wherein: and the circulating water tank (11) is provided with a slurry outlet (26).