CN212523532U - DC electrostatic cyclone dust collector with steady flow electrode bar - Google Patents

Abstract

The utility model discloses a direct current type electrostatic cyclone dust collector with a steady flow electrode bar, which comprises a dust collecting pole cylinder body, wherein an air inlet is fixedly arranged outside the upper part of the dust collecting pole cylinder body, a 40-degree straight spiral type flow deflector is arranged at the air inlet, and an ash hopper is arranged at the bottom of the dust collecting pole cylinder body; the high-voltage generator is fixedly arranged on the top of the dust collecting pole cylinder, one end of the high-voltage generator is connected with a steady-flow electrode bar fixed on the top of the dust collecting pole cylinder, the other end of the high-voltage generator is connected with the inner wall of the dust collecting pole cylinder, and an insulator used for supporting the steady-flow electrode bar is arranged on the top of the dust collecting pole cylinder; the lateral surface of the ash bucket is provided with an exhaust pipe, and the lower part of the steady flow electrode bar is connected with the inlet of the exhaust pipe. The utility model has the advantages that: simple structure, rationally distributed, it is high to the dust collection efficiency of tiny granule.

Description

DC electrostatic cyclone dust collector with steady flow electrode bar

Technical Field

The utility model relates to the technical field of remove dust specifically indicates a direct current type electrostatic cyclone with stationary flow electrode bar.

Background

Cyclone dust collectors, also known as centrifugal dust collectors, are mechanical dust collectors that separate dust particles from a gas by centrifugal force generated by a rotating motion of a dust-containing gas flow. The cyclone dust collector has the advantages of simple structure, strong adaptability, various types, convenient operation and maintenance and the like, and is one of dust collecting devices with wider application in industry. In general, the cyclone dust collector can collect dust particles with the particle size of more than 5 μm, the dust collection efficiency can reach more than 90%, and the main defect of the cyclone dust collector is that the removal efficiency of fine dust particles with the particle size of less than 5 μm is low. The electrostatic precipitator is a precipitator for electrostatically adsorbing small-particle dust. The electrostatic precipitator has the advantages of high purification efficiency, small resistance loss, large treatment gas quantity range, capability of realizing full-automatic operation and the like, but the electrostatic precipitator is relatively complex in equipment structure, large in occupied area and high in one-time investment; the specific resistance of the dust is also required to a certain degree, namely, the dust has certain selectivity, and the high purification efficiency of all the dust cannot be ensured; the dust removal device is greatly influenced by operation conditions such as gas temperature, humidity and the like, if the same type of dust is operated at different temperatures and humidities, the obtained removal effect is different, the removal effect of some dust is good at a certain temperature and humidity, and the dust can not be removed almost due to the change of dust resistance at another temperature and humidity. Thus, the cyclone dust collector can be combined with the electrostatic dust collector to complement the respective disadvantages, thereby obtaining higher purification efficiency.

Through research and development on the prior patents, the patents about the electrostatic cyclone dust collector are as follows: the utility model provides a whirlwind water film electrostatic precipitator publication number (CN 206980990U), mainly is that the flue gas of dusty particulate matter gets into the barrel through bottom gas inlet, utilizes the natural draft spiral rising in the barrel and centrifugal force effect, and the negative pole line at barrel center discharges simultaneously, produces the high voltage electrostatic field, lets charged particle drive toward the water film, and clean gas upwards discharges, and the granule falls into the ash bucket, and waste water gets into purifying water tank and carries out purification treatment. The dust remover has the problems that large particles are mainly charged by an electric field, the large particle removal efficiency is not obviously influenced by the increase of gas humidity, and a water film is not suitable for removing hydrophobicity and hydraulic dust and is easy to generate secondary pollution; a cyclone wet electrostatic dust collector (CN 103736604B) features that the fume is tangentially introduced from the top of said dust collector in straight-flow mode, the particles are removed by the dust collecting polar plate with microporous structure on its wall and the corona wire in said dust collector under the action of cyclone centrifugal force and electric field charge, and the clean gas is directly discharged from the bottom of said dust collector. The dust remover has the problems that the airflow is not uniformly distributed, and the amount of the flue gas treated at one time is limited; the high-temperature electrostatic cyclone dust collector is disclosed in the publication number (CN2749577Y), high-temperature dust-containing flue gas flows tangentially into the dust collector through an air inlet pipe, an electric field is formed by utilizing an electron emission head and the high-temperature flue gas, and finally clean gas is discharged through an air outlet pipe under the centrifugal action of reflux cyclone. The dust remover is easy to generate an upper vortex dead angle and secondary dust raising.

It is relatively more visible to synthesize, and the combination of static-whirlwind is accomplished to current technique, and flue gas dust collection efficiency obtains improving, but does not consider the simplicity of dust remover equipment structure itself, the even degree that distributes that dusty air current got into, secondary pollution, secondary raise dust and produce the vortex dead angle scheduling problem, consequently, how to make simple structure itself, reduce the phenomenon of secondary pollution and secondary raise dust, prevent to go up the vortex dead angle when combination static-whirlwind dust remover improves dust collection efficiency and be the current problem that awaits for a short time to solve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems, the direct current type electrostatic cyclone dust collector with the steady flow electrode bar is provided, when the dust collector operates, the gas forms rotational flow in the barrel in the tangential direction through the flow deflector, the particles with larger centrifugal force collide with the barrel wall, the stall falls into the ash bucket firstly, the particles with smaller centrifugal force are charged through the electric field action between the steady flow electrode bar and the dust collecting electrode barrel wall, then are collected by the dust collecting electrode barrel wall, the particles accumulate to a certain degree on the dust collecting electrode barrel wall and finally fall into the ash bucket along with the gravity action, the clean gas is discharged through the exhaust pipe with radian below the steady flow electrode bar, the dust collector which solves the single dust collection mechanism in the prior art can only remove the problems that a certain dust particle diameter range, the phenomenon that the cyclone dust collector can generate secondary dust raising in operation and the dead angle of upper vortex, and the structure of the dust collector is simple, the cost is low, and the dust removal efficiency is extremely high.

In order to solve the technical problem, the utility model provides a technical scheme does: a direct-current electrostatic cyclone dust collector with a steady-flow electrode bar comprises a dust collecting electrode cylinder, wherein an air inlet is fixedly arranged outside the upper part of the dust collecting electrode cylinder, a 40-degree straight spiral flow deflector is arranged at the air inlet, and an ash hopper is arranged at the bottom of the dust collecting electrode cylinder;

the high-voltage generator is fixedly arranged on the top of the dust collecting pole cylinder, one end of the high-voltage generator is connected with a steady-flow electrode bar fixed on the top of the dust collecting pole cylinder, the other end of the high-voltage generator is connected with the inner wall of the dust collecting pole cylinder, and an insulator used for supporting the steady-flow electrode bar is arranged on the top of the dust collecting pole cylinder;

the lateral surface of the ash bucket is provided with an exhaust pipe, and the lower part of the steady flow electrode bar is connected with the inlet of the exhaust pipe.

As an improvement, the ash bucket is of a conical structure.

As an improvement, a cross-shaped prickle corona electrode is arranged on the steady flow electrode rod.

As an improvement, the exhaust pipe is bent into a 30-degree arc shape in the conical ash bucket.

As a modification, the number of the air inlets 3 is two.

Compared with the prior art, the utility model the advantage lie in: the utility model provides an among the device, simple structure, rationally distributed, it is high to the dust collection efficiency of tiny granule. The gas can remove part of dust with larger particle size through cyclone dust removal, and then can remove small-particle dust which is not removed by the cyclone dust collector through electrostatic dust removal, the stable-flow electrode bar obviously improves the dust removal efficiency of the dust collector under the assistance of the cross-shaped bur corona electrode, the problems of secondary pollution, secondary dust raising, vortex dead angle generation and the like in the prior art are solved, and the problem of overlarge occupied area is solved by the integrated dust removal equipment.

Drawings

Fig. 1 is a front view of the dc electrostatic cyclone with a stationary flow electrode bar of the present invention.

Fig. 2 is a top view of the dc electrostatic cyclone with a current stabilizing electrode bar of the present invention.

As shown in the figure: 1. the device comprises a high-voltage generator, 2, insulators, 3, an air inlet, 4 and 40-degree straight spiral type flow deflectors, 5, a dust collecting electrode cylinder, 6, a cross-shaped burred corona electrode, 7, a steady-flow electrode rod, 8, an exhaust pipe, 9 and an ash bucket.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in the figure, the invention relates to a direct-current electrostatic cyclone dust collector with a steady-flow electrode bar, which comprises a dust collecting electrode cylinder body 5, wherein the outer part of the upper part of the dust collecting electrode cylinder body 5 is fixedly provided with two air inlets 3, the two air inlets 3 adopt a double air inlet mode, air enters the dust collecting electrode cylinder body 5 through the air inlets 3 in a tangential direction, a rotational flow is formed in the cylinder body through a 40-degree straight spiral type deflector 4, and particles with larger centrifugal force have smaller speed and are stalled and fall into an ash hopper 9 after colliding and rubbing with the dust collecting electrode cylinder body 5. The high-voltage generator 1 is fixedly mounted on the top of the dust collecting electrode cylinder 5, one end of the high-voltage generator 1 is connected with the current stabilizing electrode rod 7 fixed on the top of the dust collecting electrode cylinder 5 and used for providing negative electricity for the current stabilizing electrode rod 7, the other end of the high-voltage generator 1 is connected with the inner wall of the dust collecting electrode cylinder 5 and used for providing positive electricity for the inner wall of the dust collecting electrode cylinder 5, and at the moment, an uneven electric field is formed between the current stabilizing electrode rod 7 and the inner wall of. The top of the dust collecting electrode cylinder body 5 is also provided with an insulator 2 for supporting a steady flow electrode rod 7, thereby playing the role of supporting and insulating. The steady flow electrode bar 7 is provided with a cross-shaped prickle corona electrode 6, so that the electric field force acting on the tiny particles is increased. The lower part of the dust collecting pole cylinder 5 is connected with a conical ash bucket 9. The lower part of the steady flow electrode bar 7 is connected with an inlet of an exhaust pipe 8, the exhaust pipe 8 is bent into an arc shape of 30 degrees in a conical ash bucket 9, and an outlet of the exhaust pipe 8 is arranged on the side surface of the conical ash bucket 9.

The utility model discloses a theory of operation: when the dust remover starts to operate, the dust-containing gas enters the dust remover tangentially from the gas inlet 3. The dust-containing gas enters the cylinder through a 40-degree straight spiral flow deflector 4 arranged at the gas inlet 3 and forms a rotational flow in the cylinder. After the dust particles with larger centrifugal force collide and rub with the inner wall of the dust collecting pole cylinder 5, the flow velocity of the dust particles becomes smaller, and part of the dust particles with larger particle size collide and rub with the inner wall of the dust collecting pole cylinder 5 and even stall and fall into the dust hopper 9. The remaining dust-containing gas enters the electrostatic dust removal stage. The steady flow electrode bar 7 of the electrostatic dust collector is also called as a cathode and the inner wall of the dust collecting electrode cylinder 1 is also called as an anode to be connected with the high-voltage generator 1. The cross-shaped prickle corona 6 electrode on the steady current electrode bar 7 has higher current density and is enough to ionize gas, so that the electric field force acting on the tiny particles is increased. The gas usually contains only very small amounts of free electrons and ions and can be considered an insulator. And changes occur when the gas enters an electric field of non-uniform field strength. The closer the non-uniform electric field is to the electrode surface, the greater the electric field strength. When the potential difference of the uneven electric field is increased to a certain value, gas is ionized to generate a large number of free electrons and positive and negative ions, the free electrons and the positive and negative ions move to opposite poles, and aerosol particles in the electric field space collide with the free electrons and the gas positive and negative ions to be attached to charge. Under the combined action of electric field force and space resistance, the charged particles move towards the inner wall of the dust collecting electrode cylinder 5 and are accumulated on the inner wall of the dust collecting electrode cylinder 5, when the charged particles are accumulated to a certain degree, dust captured on the inner wall of the dust collecting electrode cylinder 5 falls into an ash bucket 9 under the action of gravity, and clean gas is discharged from an arc-shaped exhaust pipe 8 connected below the current stabilizing electrode rod 7.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims (5)

1. The utility model provides a direct current formula electrostatic cyclone with stationary flow electrode bar, includes collection dirt utmost point barrel (5), its characterized in that: an air inlet (3) is fixedly arranged outside the upper part of the dust collecting electrode cylinder body (5), a 40-degree straight spiral type flow deflector (4) is arranged at the air inlet (3), and an ash bucket (9) is arranged at the bottom of the dust collecting electrode cylinder body (5);

the dust collecting electrode device is characterized in that a high-voltage generator (1) is fixedly mounted on the top of the dust collecting electrode cylinder (5), one end of the high-voltage generator (1) is connected with a steady flow electrode bar (7) fixed on the top of the dust collecting electrode cylinder (5), the other end of the high-voltage generator is connected with the inner wall of the dust collecting electrode cylinder (5), and an insulator (2) used for supporting the steady flow electrode bar (7) is arranged on the top of the dust collecting electrode cylinder (5);

an exhaust pipe (8) is arranged on the side surface of the ash bucket (9), and the lower part of the steady-flow electrode bar (7) is connected with an inlet of the exhaust pipe (8).

2. The direct current type electrostatic cyclone dust collector with the current stabilizing electrode bar as claimed in claim 1, wherein: the ash bucket (9) is of a conical structure.

3. The direct current type electrostatic cyclone dust collector with the current stabilizing electrode bar as claimed in claim 1, wherein: the steady flow electrode bar (7) is provided with a cross-shaped prickle corona electrode (6).

4. The direct current type electrostatic cyclone dust collector with the current stabilizing electrode bar as claimed in claim 1, wherein: the exhaust pipe (8) is bent into an arc shape of 30 degrees in the conical ash bucket (9).

5. The direct current type electrostatic cyclone dust collector with the current stabilizing electrode bar as claimed in claim 1, wherein: two air inlets (3) are arranged.

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