CN104190545B - Tubular type micropowder electrostatic precipitator and application process thereof - Google Patents

Abstract

The invention discloses a tubular micropowder electrostatic precipitator, which solves the problems that the existing precipitator has complex structure, low dust removal efficiency, poor effect and cannot satisfy large-scale dust removal. The tubular micropowder electrostatic precipitator is characterized in that it comprises a dust collector housing (1) having an air inlet (2) and an air outlet (3), a rubber hose (4) arranged in the dust collector housing (1), The inlet end of the rubber hose (4) is connected with a foam particle delivery mechanism capable of transporting foam particles into the rubber hose and making the foam particles move along the direction of the rubber hose in the rubber hose. On the basis of the above structure, the present invention also discloses its application method. The invention not only has simple structure and low cost, but also uses static electricity to realize efficient and high-quality dust removal, and can meet large-scale dust removal requirements, laying a solid foundation for its wide-ranging popularization and application.

Description

Tubular fine powder electrostatic precipitator and its application method

technical field

The invention relates to a dust collector, in particular to a tube-type fine powder electrostatic dust collector and an application method thereof.

Background technique

In the dust removal process, dust with a diameter of less than 1um is difficult to remove through dust removal methods such as bag, filter element, impact or cyclone due to its small diameter and light weight, which has become a difficulty in the dust removal process. Electrostatic dust removal is used to charge the dust and adsorb it on the dust collector, which can effectively remove dust with a diameter of less than 1um. Further, a tubular electrostatic precipitator has been developed. The existing tubular electrostatic precipitator adopts a corona electrode set in the center of the circular tube, and the inner wall of the circular tube is used as the dust collecting electrode. The diameter of the tube is usually 150-300 mm, and the length 2-5 meters. Because the amount of gas passing through a single circular tube is very small, it is usually formed by paralleling multiple tubes. It is generally applicable to the situation where the amount of gas to be processed is small, and it cannot meet the requirements of large-scale ash removal in the current workshop. Moreover, the one-time investment of equipment is high, the equipment is huge, consumes a lot of steel, and high-voltage power transformation and rectification equipment are required. Usually, the output peak voltage of high-voltage power supply equipment is 70-100KV, and the technical level of manufacturing, installation and management is high.

Contents of the invention

The object of the present invention is to overcome above-mentioned defect, provide a kind of electrostatic precipitator with simple structure, low cost, and can effectively remove fine dust.

In order to achieve the above object, the present invention adopts technical scheme as follows:

Tubular micropowder electrostatic precipitator, including a dust collector housing with an air inlet and an air outlet, and a rubber hose arranged in the dust collector housing. The foam particle conveying mechanism moves along the direction of the hose.

Specifically, the foam bead conveying mechanism includes a foam bead chamber connected to the inlet end of the rubber hose and containing foam bead, and a fan connected to the foam bead chamber and blowing air to it for conveying the foam bead into the rubber hose.

In order to realize the circulation of the foam particles in the rubber tube, the outlet end of the rubber tube is also connected with the foam particle chamber.

Preferably, both the inlet end and the outlet end of the rubber hose are located outside the housing of the dust collector, and correspondingly, the foam chamber and the fan are also located outside the housing of the dust collector.

In order to increase the adsorption area, the rubber hose is coiled or spiral.

Further, the rubber hose is a polyether polyurethane hose, and its outer wall is provided with a shockproof hard PVC spiral reinforcement.

Preferably, the diameter of the foam particles is smaller than the inner diameter of the hose.

Still further, the housing of the dust collector is also provided with an ash discharge port.

In order to facilitate the movement of the foam particles in the hose, the foam particles are spherical or ellipsoidal.

In another solution, the foam particles are replaced by a granular material that can electrify the rubber hose after rubbing against the rubber hose.

The application method of the above-mentioned tubular micropowder electrostatic precipitator comprises the following steps:

(1) Turn on the fan, and the fan blows the foam particles in the foam particle chamber into the rubber hose;

(2) Foam particles rub against the inner wall of the hose, resulting in the transfer of electrons, and the hose is charged after friction with the foam beads, forming a high-voltage electrostatic field inside the dust collector housing;

(3) The dust-laden gas enters the dust collector shell through the air inlet, and the dust is adsorbed on the charged hose wall when passing through the high-voltage electrostatic field, and the gas is discharged from the air outlet;

(4) After the dust removal is completed, the dust is discharged from the ash outlet.

The design principle of the present invention: foam particles are used to circulate in the rubber pipe, and the foam particles will rub against the pipe wall during the circulation process, resulting in the transfer of electrons, thereby forming a high-voltage electrostatic field inside the dust collector, and realizing dust removal through the high-voltage electrostatic field.

When the dust passes through the high-voltage electrostatic field, the principle of being adsorbed on the charged hose wall is: when the dust passes through the high-voltage electrostatic field, electrostatic induction occurs, and the free charges in the dust move directional under the action of the electric field force, making both ends The same amount of different charges appear respectively, forming a structure where one side is positively charged and the other side is negatively charged. The charged hose and dust are attracted to each other under the action of Coulomb force, the dust is adsorbed on the wall of the charged hose, and the gas is discharged from the air outlet.

Compared with prior art, the beneficial effect of the present invention is:

In the present invention, the rubber hose is used in conjunction with the foam particles. The foam particles move in the rubber pipe and rub against its inner wall, resulting in the transfer of electrons. In the high-voltage electrostatic field, when the dust passes through the high-voltage electrostatic field, electrostatic induction is generated, and the free charges in the dust move directionally under the action of the electric field force, so that equal amounts of different charges appear at both ends, and one side is positively charged and the other side is positively charged. Negatively charged structure, the charged rubber hose and dust attract each other under the action of Coulomb force, the dust is adsorbed on the wall of the charged rubber hose, and the gas is discharged from the air outlet; the invention not only has simple structure and low cost, but also can meet the needs of large workshops. The requirement for large-scale ash removal effectively overcomes the defects of the prior art.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

The names of the corresponding reference signs in the attached drawings are as follows: 1-dust collector housing, 2-air inlet, 3-air outlet, 4-rubber hose, 5-foam chamber, 6-fan, 7-ash outlet.

detailed description

The present invention will be further described below in conjunction with accompanying drawing. Embodiments of the present invention include, but are not limited to, the following examples.

Example

As shown in Figure 1, this embodiment provides a tubular micropowder electrostatic precipitator. The electrostatic precipitator generates electron transfer through the movement and friction of foam particles in the rubber tube, so that a high-voltage electrostatic field is formed inside the precipitator. Dust removal not only has high dust removal efficiency and good dust removal effect, but also can meet large-scale dust removal requirements.

Specifically, the tubular fine powder electrostatic precipitator includes a dust collector housing 1, a rubber hose 4, a foam particle chamber 5 and a fan 6 and the like. Among them, the dust collector housing provides a dust removal space for the dust-containing gas, and its interior is a cavity structure. The dust collector housing is respectively provided with an air inlet 2, an air outlet 3 and an ash discharge outlet 7. The shape of the dust collector housing is not particularly limited, and it can be a cube, a cuboid, a cylinder, a sphere, etc. The shape of the dust collector housing in the accompanying drawings should not limit the scope of protection of this application.

The hose is built into the shell of the dust collector, and its two ends are the inlet end and the outlet end respectively. Most of the hose body is in the shape of a coil or a spiral tube to increase the adsorption area. Preferably, the rubber hose is a polyether polyurethane hose, and its outer wall is provided with a shockproof hard PVC spiral reinforcement. The inlet end of the hose is connected to the outlet of the foam particle chamber, and the outlet end is connected to the inlet of the foam particle chamber to form a closed-loop structure for the foam particles to circulate in the rubber hose. The inner wall of the hose is completely smooth, so that the foam particles can flow smoothly in the hose.

The foam bead chamber is a closed container made of 3mm steel plate, and the foam bead with a diameter of 5mm is filled from the top of the foam bead chamber before the equipment works. The diameter of the foam particles should be smaller than the inner diameter of the hose, and its shape can be irregular or regular geometric shapes, such as spherical, ellipsoidal, etc. The foam particles in the foam particle chamber are blown into the rubber hose by the fan, and move along the direction of the rubber hose. The fan is preferably a centrifugal fan. The foam particles move in the hose, rub against the inner wall of the hose, and generate electron transfer. The hose is charged after friction, thereby forming a high-voltage electrostatic field inside the dust collector shell; then, when the dust passes through the high-voltage electrostatic field, it generates electrostatic induction. The free charges in the dust move directionally under the action of the electric field force, so that equal amounts of different charges appear at both ends, forming a structure with positive charges on one side and negative charges on the other side. The charged hose and dust are under the action of Coulomb force Attract each other, the dust is adsorbed on the charged hose wall, and the gas is discharged from the air outlet; after the dust removal is completed, the dust is discharged from the ash discharge port.

According to the above-mentioned embodiments, the present invention can be well realized. It is worth noting that, based on the premise of the above-mentioned design principles, in order to solve the same technical problem, even if some insubstantial changes or modifications are made on the basis of the structure disclosed in the present invention, the essence of the adopted technical solution is still Like the present invention, it should also be within the protection scope of the present invention.

Claims (10)

1. Tubular micropowder electrostatic precipitator, characterized in that it includes a dust collector housing (1) with an air inlet (2) and an air outlet (3), and a rubber hose (4) arranged in the dust collector housing (1) , the inlet end of the rubber hose (4) is connected with a foam particle conveying mechanism capable of transporting foam particles into the rubber hose and making the foam particles move along the direction of the rubber hose in the rubber hose. 2. The tubular micropowder electrostatic precipitator according to claim 1, characterized in that, the foam particle conveying mechanism comprises a foam particle chamber (5) connected to the inlet end of the rubber hose (4) and built with foam particles, and The foam particle chamber (5) is connected and blows air to it for delivering the foam particles to the blower fan (6) in the rubber pipe (4). 3. The tubular fine powder electrostatic precipitator according to claim 2, characterized in that the outlet end of the rubber hose is also connected to the foam particle chamber (5). 4. The tubular micropowder electrostatic precipitator according to claim 3, characterized in that, the inlet end and the outlet end of the rubber hose are all located outside the dust collector housing (1), and correspondingly, the foam particle chamber (5) and The blower fan (6) is also located outside the dust collector housing (1). 5. The tubular fine powder electrostatic precipitator according to any one of claims 1 to 4, characterized in that, the rubber hose (4) is a coiled tube or a spiral tube. 6. The tubular micropowder electrostatic precipitator according to claim 5, characterized in that the rubber hose (4) is a polyether polyurethane hose, and its outer wall is provided with a shockproof hard PVC spiral reinforcement. 7. The tubular fine powder electrostatic precipitator according to claim 5, characterized in that the diameter of the foam particles is smaller than the inner diameter of the rubber hose (4). 8. The tubular fine powder electrostatic precipitator according to claim 1, characterized in that, the dust discharge port (7) is also provided on the dust collector housing (1). 9 . The tubular fine powder electrostatic precipitator according to claim 2 , characterized in that, the foam particles are replaced by a granular material that can charge the rubber hose ( 4 ) after friction with the rubber hose ( 4 ). 10. The application method of the tubular fine powder electrostatic precipitator according to any one of claims 1 to 8, characterized in that it comprises the following steps: (1) Turn on the fan, and the fan blows the foam particles in the foam particle chamber into the rubber hose, and the foam particles circulate in the rubber hose; (2) Foam particles rub against the inner wall of the hose, resulting in the transfer of electrons, and the hose is charged after friction with the foam beads, forming a high-voltage electrostatic field inside the dust collector housing; (3) The dust-laden gas enters the dust collector shell through the air inlet, and the dust is adsorbed on the charged hose wall when passing through the high-voltage electrostatic field, and the gas is discharged from the air outlet; (4) After the dust removal is completed, the dust is discharged from the ash outlet.