CN210411140U - High-efficiency electric dust remover with independent ash removal and filter screen - Google Patents
High-efficiency electric dust remover with independent ash removal and filter screen Download PDFInfo
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- CN210411140U CN210411140U CN201920320605.7U CN201920320605U CN210411140U CN 210411140 U CN210411140 U CN 210411140U CN 201920320605 U CN201920320605 U CN 201920320605U CN 210411140 U CN210411140 U CN 210411140U
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Abstract
The utility model provides a take high-efficient electrostatic precipitator of independent deashing and filter screen, including loudspeaker, the first electric field of a plurality of, metal mesh filter layer, metal mesh rapping device, the loudspeaker and the high-voltage electrical system of giving vent to anger of admitting air, the metal mesh filter layer independently sets up the flue gas direction rear end at the first electric field of 1-2 rear ends, and every layer of metal mesh filter layer sets up independent metal mesh rapping device, the metal mesh filter layer hangs on electrostatic precipitator's casing. And an independent rapping system is adopted, and the metal net and the anode plate are rapped in a staggered manner, so that secondary dust emission is greatly reduced. Compared with the conventional electric dust collector, the electric dust collector has the advantages thatEffectively trapping the escaping fine particles, solving the problem that the dust concentration of the outlet of the electric dust collector is limited by the dust raising, increasing the dust removing efficiency, breaking through the existing bottleneck by the lowest outlet dust concentration, and stably realizing 10mg/m of the electric dust collector3Even 5mg/m3The outlet dust concentration below, and the technical scheme for the conventional electric dust remover is low in modification difficulty and low in cost.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an electric precipitation equipment's technical field, especially a take high-efficient electrostatic precipitator of independent deashing and filter screen.
[ background of the invention ]
The electric dust collector is the mainstream technology of gas particulate matter separation, and because the effect of collecting secondary raise dust is limited under the current conventional polar distribution type, the electric dust collector has the problem that secondary raise dust limits the concentration of outlet dust.
In order to solve the above problems, the patent with application number 201510064800.4 proposes an electrostatic filtering dust collector, which can improve the dust collection efficiency to a certain extent, but the scheme adopted by the electrostatic filtering dust collector is that a filter tank is fixed on an anode plate through a support plate, and shares a set of rapping device with the anode plate.
An overhaul channel is generally arranged between electric fields of the conventional electric dust collector, and a space of an anode or cathode rapping device is reserved in some electric fields, so that a space enough for increasing equipment exists between the electric fields, the space can be utilized through reasonable arrangement, and the utilization rate of the equipment is improved. An efficient electric dust remover with independent dust cleaning and filtering net is provided.
[ Utility model ] content
The utility model discloses an aim at solving the problem among the prior art, provide a take high-efficient electrostatic precipitator of independent deashing and filter screen, can catch the fine particulate matter of escape more high-efficiently, solved the problem of electrostatic precipitator raise dust restriction export dust concentration.
In order to achieve the purpose, the utility model provides a take high-efficient electrostatic precipitator of independent deashing and filter screen, including admitting air loudspeaker, the first electric field of a plurality of, metal mesh filter layer, metal mesh rapping device, the loudspeaker and the high-voltage electrical system of giving vent to anger, the metal mesh filter layer independently sets up the flue gas direction rear end at the first electric field of 1-2 rear ends, and every layer of metal mesh filter layer sets up independent metal mesh rapping device, the metal mesh filter layer hangs on electrostatic precipitator's casing.
Preferably, first electric field includes at least three electric field, metal filter layer arranges in 2 electric fields or the end electric field that electrostatic precipitator is close to outlet horn one end to be located the last row of downstream side of electric field along flue gas direction, every metal filter layer that sets up in the electric field rear side has one deck metal mesh.
Preferably, a plurality of channels are distributed in each electric field, the pore distribution of the metal mesh in each channel of the same electric field is non-uniform, the pore of the metal mesh close to the anode plate is small, the pore of the metal mesh far away from the anode plate is large, and the pore distribution of the metal mesh in two adjacent channels in the same electric field is the same.
Preferably, the metal filter layer is arranged in 2 electric fields close to one end of the air outlet loudspeaker at the back of the electric dust collector, the sizes of the metal mesh holes arranged in different electric fields are different, and the metal mesh holes of the back electric field are smaller than those of the metal mesh holes of the front electric field.
Preferably, the metal mesh filter layer comprises a suspension device and a metal mesh, the meshes of the metal mesh are non-uniform and are symmetrically arranged in each channel, the metal mesh is integrally suspended on a shell of the electric dust collector through the suspension device, two fixing supports are respectively arranged at two ends of the suspension device, the two fixing supports are respectively welded and fixed at two sides of the shell of the electric dust collector, limiting angle steels are symmetrically arranged below the fixing supports, and the metal mesh card is installed between the two limiting angle steels.
Preferably, the metal filter layer is arranged in the space above the electric field downstream maintenance platform.
Preferably, the metal mesh filter layer is hung on the shell through a frame, the frame is made of metal materials and is in contact with the shell so that the metal mesh filter layer is grounded through the shell, and the potential is zero when the electric dust collector operates.
Preferably, the metal mesh filter layer arranged behind the electric field is provided with independent metal mesh rapping devices, each metal mesh rapping device being provided with a different rapping period.
Preferably, each of the first electric fields is provided with a flue gas pressure sensor.
Preferably, the metal mesh material of the metal filter layer is stainless steel, and the other material is Q235.
The utility model has the advantages that: the utility model discloses an independent system of shaking, metal mesh shakes with the anode plate in the wrong time and shakes, has reduced the secondary raise dust by a wide margin. The metal mesh filter layer is arranged at the tail end of each dust collecting partition and used for collecting rapping dust, non-rapping dust and particles which are not trapped on the anode plate, and the metal mesh filter layer is independently separated from a first electric field, compared with a conventional electric dust collector, the metal mesh filter layer can more efficiently trap escaping fine particles, and the problem that the dust concentration of the electric dust collector is limited to the outlet dust concentration is solved, so that the dust removal efficiency is increased, the lowest outlet dust concentration breaks through the existing bottleneck, and the 10mg/m of the electric dust collector can be stably realized3Even 5mg/m3The outlet dust concentration below, and the technical scheme for the conventional electric dust remover is low in modification difficulty and low in cost.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of the high efficiency electrostatic precipitator with independent ash removal and filtration screen of the present invention;
FIG. 2 is a right side view of the high efficiency electrostatic precipitator with independent ash removal and filtration screen of the present invention;
FIG. 3 is a top view of the inside of the high efficiency electrostatic precipitator with independent ash removal and filtration screen of the present invention;
FIG. 4 is an enlarged schematic view of the high efficiency electrostatic precipitator with independent ash removal and filter screen of the present invention at the A position;
FIG. 5 is a schematic diagram of the dust collection of the high-efficiency electric dust collector with the independent ash removal and filter screen.
[ detailed description ] embodiments
Referring to fig. 1 to 2 the utility model relates to a take high-efficient electrostatic precipitator of independent deashing and filter screen, including inlet horn 1, the first electric field 2 of a plurality of, metal mesh filter layer 3, metal mesh rapping device 4, the loudspeaker 5 and the high-voltage electrical system of giving vent to anger, metal mesh filter layer 3 independently sets up at the flue gas direction rear end of the first electric field 2 of 1-2 rear ends, and every layer of metal mesh filter layer 3 sets up independent metal mesh rapping device 4, metal mesh filter layer 3 hangs on electrostatic precipitator's casing, and the metal mesh filter layer shakes through metal mesh rapping device and beats the deashing, and the metal mesh material is the stainless steel.
Referring to fig. 3, the first electric field 2 includes at least three electric fields, the metal filter layer 3 is arranged in 2 electric fields or last electric fields of the electric dust collector near the end of the outlet horn 5 and is located at the last row of downstream side of the electric field along the flue gas direction, and each metal filter layer 3 arranged at the rear side of the electric field has one metal mesh 32. About 30% of dust is not collected after the first electric field, and the dust concentration is as high as 1g/m3In this case, the metal filter layer is easily clogged, and therefore, the metal filter layer is not provided on the rear side of the front end electric field. Because the too much number of metal mesh layers leads to the flue gas resistance to increase easily, consequently, 1 electric field rear end sets up 1 layer of metal mesh, sets up metal filter layer (totally 2 layers) at the terminal 2 electric field rear ends of flue gas under the high condition of dust collection efficiency requirement, under the not high condition of dust collection efficiency requirement, sets up metal filter layer (totally 1 layer) at 1 electric field (last electric field) rear end.
Further, referring to fig. 2, the pore distribution of the metal mesh in each channel is non-uniform in the same electric field, and the pore distribution of the metal mesh between the channels is the same; the arrangement of the pores of the metal mesh is different for different electric fields.
Same electric field: a plurality of channels are arranged in each electric field, the pore distribution of the metal mesh 32 in each channel of the same electric field is non-uniform, and the pore arrangement of the metal filter disc is related to the collection of escaping particles, and the particles close to the anode plate are small, so the pore of the metal mesh 32 close to the anode plate is small; the quantity of particles far away from the anode plate is small, so the pores of the metal mesh 32 far away from the anode plate are large, so the smoke resistance is low, and the pores of the metal mesh 32 of two adjacent channels in the same electric field are distributed the same.
Different electric fields: and the metal filter layer 3 is arranged in 2 electric fields close to one end of the air outlet horn 5 at the back of the electric dust collector. Because the quantity and the characteristics of the dust collected by the metal nets of different electric fields are different, the sizes of the pores of the metal nets 32 arranged in different electric fields are different, and the pores of the metal net 32 in the rear electric field are smaller than those of the metal net 32 in the front electric field.
Referring to fig. 3 and 4, the metal mesh filter layer 3 includes a suspension device 31 and a metal mesh 32, the mesh of the metal mesh 32 is non-uniform and each channel is symmetrically arranged, the metal mesh 32 is integrally suspended on the shell of the electric dust collector through the suspension device 31, two fixing supports 311 are respectively arranged at two ends of the suspension device 31, the two fixing supports 311 are respectively welded and fixed at two sides of the shell of the electric dust collector, limiting angle steels 312 are symmetrically arranged below the fixing supports 311, and the metal mesh 32 is clamped between the two limiting angle steels 312. Therefore, the metal filter layer is clamped and suspended on the shell of the electric dust collector, when the electric dust collector is vibrated, the metal filter layer has enough vibration space, the metal filter layer is ensured to have enough vibration force transmission everywhere, and the dust removal effect is ensured.
The metal filter layer 3 is arranged in the space above the electric field downstream maintenance platform, and the space above the maintenance platform is utilized, so that the interference with other parts in space can be avoided, and the device has the advantages of compact structure, good transformation feasibility and low cost. The metal mesh filter layer 3 is hung on the shell through the frame, the frame adopts metal material and shell contact so that the metal mesh filter layer 3 passes through shell ground, and the electric potential is zero when the electrostatic precipitator moves. The metal mesh filtering layer 3 arranged behind the electric field is provided with independent metal mesh rapping devices 4, each metal mesh rapping device 4 is provided with different rapping periods, and the rapping periods are different because the quantity and the property of dust collected by each electric field are different. Each electric field of the first electric field 2 is provided with a smoke pressure sensor, and a rapping signal is dynamically transmitted through the smoke pressure change of the electric field, or a periodic rapping system is set according to the pressure change trend. The metal mesh material of the metal filter layer is stainless steel, and the other material is Q235.
The utility model relates to a high-efficient electrostatic precipitator's of independent deashing in area and filter screen theory of operation does:
fig. 5 shows a dust collection schematic diagram, which specifically includes the following steps:
illustration of the drawings: the arrowed graph is a power line, indicating the direction of the electric force E;
black dots represent particulate matter (dust);
and the curve connecting the black dots represents the motion trail of the particles.
(1) The trapping process of the electric dust collector on the conventional particulate matters comprises the following steps: the flue gas with the particulate matters (dust) flows into an electric field of the electric dust collector, and the particulate matters are adsorbed to the surface of the electric dust collector by the charge of corona discharge of cathode wires in the space of the electric field, so that the particulate matters are charged with negative charges.
(3) The conventional particulate matter trapping process: most particulate matters are charged, the negatively charged particulate matters face the anode plate under the action of electric field force, the main effective acting force for trapping the particulate matters exists, the comprehensive action of gravity and inertia force and the brownian motion of the particulate matters exist, the stress resultant force direction of the particulate matters changes along with time, when the particulate matters reach the anode plate from the f state (the particulate matters are in smoke) under the action of the electric field force, the particulate matters are adsorbed on the anode plate to form a cake layer, the cake layer becomes the g state (the particulate matters are adsorbed on the anode plate), and the cake layer falls into the ash bucket when the anode plate shakes, so that the particulate matters are removed.
(4) The conventional dust removal process has the problem that the dust emission limits the dust concentration at the outlet: as shown in a → b → c process of fig. 5, wherein a → b is the same as the above f → g process, the particles are adsorbed on the anode plate, but under the action of airflow brush, ion wind and the like, the particles are blown back to the flue gas on the anode plate again, from the state b (the particles are adsorbed on the anode plate) to the state c (the particles are blown back to the flue gas again, dust is raised), the particles move to the rear end of the electric field of the electric dust collector under the action of airflow after reaching the flue gas, and make near parabolic motion under the action of electric field force (c → d process), wherein, part of the ultrafine particles under the action of brownian motion and the like, the particles do not reach the anode plate, and fly out of the electric field.
(5) The process of the conventional dust removal that the collection efficiency of fine particles and particles difficult to charge is low comprises the following steps: as in the h → i → j → k process of fig. 5.
Because the brownian motion effect of the ultrafine particles is larger, the ultrafine particles can not be trapped on the anode plate by the electric field force.
Due to low charge (Q) of the particles difficult to be chargedElectric chargeSmall), FForce of electric field＝QElectric charge×EElectric field intensityTherefore, the electric field force is very small, and the particulate matters cannot be trapped on the anode plate by the electric field force.
Therefore, the particles with low collection efficiency of the fine particles and the particles difficult to charge fly out of the electric field without reaching the anode plate.
(6) The utility model discloses the principle of above "raise dust" and "fine particles and difficult lotus electric particle collection inefficiency" problem is solved to the anode plate:
the common features of the above (4) and (5) two difficult-to-capture c → d processes and j → k processes are: the particles approach the anode plate, and most of the particles move closer along the anode plate.
The principle of the utility model is as follows: through an independent metal mesh filter layer arranged at the tail end of an electric field, according to the filtration of different dust concentration distributions along each channel (the channel between two anode plates), the dust is intercepted by metal meshes with different porosities, so that the dust is trapped and the fine particles and the particles difficult to charge are trapped, and the lowest smoke resistance is ensured.
Compared with the prior art, the utility model relates to a take high-efficient electrostatic precipitator of independent deashing and filter screen has following advantage:
1. the secondary removing efficiency of the raised dust and the collection efficiency of the ultrafine particles and the particles difficult to charge are greatly improved from the structural form, the problem that the raised dust of the anode plate limits the outlet dust concentration is solved, the dust removal efficiency is increased, the lowest outlet dust concentration breaks through the existing bottleneck, and the 10mg/m electric dust remover can be stably realized3Even 5mg/m3The following outlet dust concentration.
2. The modification adaptability is good. Carry out the improvement of this technical scheme to current electrostatic precipitator and imitate simply, need not change first electric field, only need increase at first electric field rear end and set up metal mesh filter layer and rapping device, reform transform the expense low, can solve the problem that most project place are restricted.
3. The adaptability to industries such as metallurgy and cement is good, especially under the flue gas operating mode that the charged flue gas particulate matter is difficult and is unsuitable for the bag-type dust remover, the utility model can fill the blank that these fields can't reach the ultralow emission of dust.
4. The metal mesh filter layer and the rapping device are independently arranged, the existing anode plate and the anode rapping device are not influenced for reconstruction projects, and the reconstruction technical risk is low.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (9)
1. The utility model provides a high-efficient electrostatic precipitator of independent deashing in area and filter screen which characterized in that: including admitting air loudspeaker (1), the first electric field of a plurality of (2), metal mesh filter layer (3), metal mesh rapping device (4), loudspeaker (5) and the high-voltage electrical system of giving vent to anger, metal mesh filter layer (3) independently set up the flue gas direction rear end at the first electric field of 1-2 rear ends (2), and every layer of metal mesh filter layer (3) sets up independent metal mesh rapping device (4), metal mesh filter layer (3) hang on the casing of electrostatic precipitator.
2. The high-efficiency electric dust remover with the independent ash removal and filter screen as claimed in claim 1, is characterized in that: first electric field (2) are including at least three electric field, metal mesh filter layer (3) arrange in 2 electric fields or last electric field that electrostatic precipitator is close to loudspeaker (5) one end of giving vent to anger to be located the last row of downstream side of electric field along flue gas direction, every metal mesh filter layer (3) that set up in the electric field rear side have one deck metal mesh (32).
3. The high-efficiency electric dust remover with the independent ash removal and filter screen as claimed in claim 2, characterized in that: a plurality of channels are distributed in each electric field, the pore distribution of the metal mesh (32) in each channel of the same electric field is non-uniform, the pore of the metal mesh (32) close to the anode plate is small, the pore of the metal mesh (32) far away from the anode plate is large, and the pore distribution of the metal mesh (32) of two adjacent channels in the same electric field is the same.
4. The high-efficiency electric dust remover with the independent ash removal and filter screen as claimed in claim 2, characterized in that: metal mesh filter layer (3) arrange in 2 electric fields that are close to loudspeaker (5) one end of giving vent to anger behind the electrostatic precipitator, set up in the pore size difference of metal mesh (32) of different electric fields, metal mesh (32) pore of electric field are less than metal mesh (32) pore of preceding electric field behind.
5. The high-efficiency electric dust remover with the independent ash removal and filter screen as claimed in claim 1, is characterized in that: metal mesh filter layer (3) are including linkage (31) and metal mesh (32), the inhomogeneous and every passageway symmetrical arrangement of net of metal mesh (32), metal mesh (32) wholly hangs on the casing of electrostatic precipitator through linkage (31), two fixing support (311) have been put respectively at the both ends of linkage (31), and welded fastening is respectively in the both sides of electrostatic precipitator casing in two fixing support (311), the below symmetry of fixing support (311) is equipped with spacing angle steel (312), metal mesh (32) clamp between two spacing angle steel (312).
6. The high-efficiency electric dust remover with the independent ash removal and filter screen as claimed in claim 1, is characterized in that: the metal mesh filter layer (3) is arranged in the space above the electric field downstream maintenance platform.
7. The high-efficiency electric dust remover with the independent ash removal and filter screen as claimed in claim 1, is characterized in that: the metal mesh filter layer (3) is hung on the shell through the frame, the frame adopts metal material and shell contact so that the metal mesh filter layer (3) passes through shell ground, and the electric potential is zero when the electrostatic precipitator moves.
8. The high-efficiency electric dust remover with the independent ash removal and filter screen as claimed in claim 1, is characterized in that: the metal mesh filtering layer (3) arranged behind the electric field is provided with independent metal mesh rapping devices (4), and each metal mesh rapping device (4) is provided with different rapping periods.
9. The high-efficiency electric dust remover with the independent ash removal and filter screen as claimed in claim 1, is characterized in that: each electric field of the first electric field (2) is provided with a smoke pressure sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920320605.7U CN210411140U (en) | 2019-03-14 | 2019-03-14 | High-efficiency electric dust remover with independent ash removal and filter screen |
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| CN201920320605.7U CN210411140U (en) | 2019-03-14 | 2019-03-14 | High-efficiency electric dust remover with independent ash removal and filter screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939823A (en) * | 2019-03-14 | 2019-06-28 | 浙江菲达环保科技股份有限公司 | A kind of high-efficiency electric dust catcher of band independence deashing and strainer |
| CN111589581A (en) * | 2020-05-25 | 2020-08-28 | 安徽工业大学 | Electric dust remover for purifying fine particles |
-
2019
- 2019-03-14 CN CN201920320605.7U patent/CN210411140U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939823A (en) * | 2019-03-14 | 2019-06-28 | 浙江菲达环保科技股份有限公司 | A kind of high-efficiency electric dust catcher of band independence deashing and strainer |
| CN111589581A (en) * | 2020-05-25 | 2020-08-28 | 安徽工业大学 | Electric dust remover for purifying fine particles |
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