JPH0824710A - Electrostatic type electronic dust collection machine - Google Patents

Abstract

PURPOSE: To provide an electrostatic dust gathering machine removing easily deposited dust, and the like, by depositing charged dust particles on an electrocondutive plate. CONSTITUTION: Charged particles in a gas are deposited by coulomb force on electroconductive plates by providing more than one pair of circular elctrocondunctive plates, in which a large elctroconductive plate 21 is engaged its center with a rotating axis 23, and by applying respectively a positive and a negative voltage to the large conductive plate and small conductive plate 22 arranged parallel and insulated each other and generating an electric field between the large and small plates, 21, 22. A scrubber 4 is provided between the elctrocondunctive plates and the deposited dust on the electroconductive plates are scrubbed by rotation of the electroconductive plates or rotation and moving of the scrubber. The dust gathering machine is formed so as to discharge the stored dust in batch and treat rapidly and surely by providing a gathering part 3 for gathering the dust.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic dust collector that charges and collects and removes dust particles existing in a gas.

[0002]

2. Description of the Related Art A conventional electronic dust collector for removing oil particles present in a gas such as oil smoke has a conductive plate because the particles themselves have an adhesive property after the charge of the charged particles is neutralized. When it adheres to, it becomes oil stains on the conductive plate and accumulates in layers. FIG. 9 is a schematic cross-sectional view of a conventional electrostatic type electronic dust collector. In the ionization section 1, discharge metal wires 11 and ground metal plates 12 are alternately arranged and a high voltage DC voltage is applied. The particles in the gas flowing into the ionization section 1 are charged, and the particles are neutralized by being adsorbed by the electric charges of the conductive plates 7 arranged in parallel in the dust collecting section 2 by the adhesive property of the particles themselves. It adheres to the conductive plate 7 and becomes an oil stain on the conductive plate 7 and accumulates in layers.
The gas in which the dust particles are adsorbed by the conductive plate 7 is cleaned,
Discharge from the outlet. The conductive plate 7 to which particles such as oil smoke are attached is vibrated and impacted by a leaf spring or a coil spring and the hammer 81 which are the vibrating body 8 mounted at one end of the conductive plate 7, and removes oil stains. Alternatively, the conductive plate 7 is washed with water, and is removed by washing with a detergent depending on the situation.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-mentioned conventional electrostatic type electronic dust collector, a method for cleaning a conductive plate having adsorbed particles,
To remove the conductive plate by vibrating it with a hammer,
Since the oil stains on the conductive plate are strongly adhered due to their adhesiveness and the like, there is a problem that they cannot be completely removed easily by vibration and impact. Also, in washing with water and washing with detergent, washed oil stains and the like may be discharged into the sewer along with the detergent, causing secondary pollution that contaminates the sewer.The washed conductive plate should be used until dried. Therefore, the dust collector cannot be operated during drying, and a separate dust collector must be installed separately.

According to the present invention, the oil stains attached to the conductive plates are attached to the drive rods provided between the conductive plates, and the oil stains attached to the surface of the rotating conductive plate are scraped off.
The present invention provides an electrostatic type electronic dust collector that removes oil stains quickly and surely, and is intended to solve the problems of the conventional electronic dust collector.

[0005]

According to the present invention, there is provided an electronic precipitator having a pair of circular conductive plates, which are parallel grounded metal plates alternately arranged with discharge metal wires, and which have an ionization section to which a high voltage DC voltage is applied. , The first conductive plate has its center fitted to the rotary shaft, and positive and negative voltages are applied to the first conductive plate and the second conductive plates which are alternately insulated from each other and arranged in parallel. An electric field is generated between them to deposit charged particles in the gas, and a scriber is installed between the conductive plates to scrape off the dust accumulated on the conductive plates by rotating the conductive plate or rotating and moving the scriber, and collect dust. It is an electrostatic type electronic dust collector having a configuration in which a collecting unit is provided.

A scriber is provided at the tip of a drive rod that is driven by a shaft different from the rotating shaft of the conductive plate and has a tip that makes a fan-shaped motion in the radial portion of the conductive plate. Alternatively, a plurality of scribes are attached to a drive rod provided in the radial direction of the conductive plate, and a short distance reciprocating motion is performed in the radial direction of the conductive plate to remove dust accumulated on the conductive plate. A scriber is provided on a fixed rod provided in the radial direction of the conductive plate.

Between the conductive plates, a drive shaft coaxial with the rotary shaft of the conductive plate and having a different drive source is provided, and a scriber is provided on the drive shaft.
The conductive plate is rotated or the scriber is rotated to remove dust accumulated on the conductive plate. The scriber or the drive rod equipped with the scriber is made of an insulating member so that dust on the conductive plate can be scraped off even when the dust collector is in operation.

A scriber provided between the conductive plates is attached in a non-contact manner with the conductive plates so that when removing dust, the scriber is tilted at a certain angle with respect to the drive rod to contact the conductive plates, and the conductive plates are rotated. Make the conductive plate easy to rotate when operating the dust collector.

[0009]

[Operation] Discharge metal wires and parallel ground metal plates are arranged alternately,
A high-voltage DC voltage is applied to ionize the inflowing gas dust particles. Equipped with a pair of circular conducting plates, the large conducting plate is fitted with its center on the rotating shaft, and positive and negative voltages are applied to the large conducting plates and the small conducting plates which are alternately insulated from each other and arranged in parallel. An electric field is generated between the plates, and the Coulomb force causes charged particles in the gas to be deposited on the conductive plate. A scriber is provided between the conductive plates to scrape off the dust accumulated on the conductive plate by rotating the scriber or rotating and moving the scriber, and to provide a collecting unit that collects the dust, so that the accumulated dust can be discharged all at once. In addition, the electrostatic type electronic dust collector is configured so that it can be surely treated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a longitudinal sectional view of a structure showing a first embodiment of the present invention, FIG. 2 is a horizontal sectional view, and FIG. 3 is a three-dimensional view of an ionization section, a dust collection section and a collection section of a dust collector. In the figure, the ionization part 1 is located in the gas introduction part of the dust collector, and the plurality of discharge metal wires 11
And a ground metal plate 12 provided between the discharge metal wires 11, and a high voltage DC voltage is applied to both metals. In the dust collecting portion 2, large disk-shaped conductive plates 21 and small disk-shaped conductive plates 22 are alternately arranged in parallel at equal intervals. The large conductive plate 21 has a rotating shaft 23 at the center.
And apply a positive potential. Four large conductive plate holes 24 are provided on a disk equidistant from the axis of the large conductive plate 21. The large conductive plate 21 is insulated from the large conductive plate holes 24 so that the conductive rods 25 penetrate the large conductive plate holes 24. 21 is connected to the inner circumference of a small conductive plate 22, and the small conductive plate 22 and the large conductive plate 21 are alternately arranged. It is adapted to rotate by the rotation drive mechanism. A negative potential is applied to the small conductive plate 22, and in the dust collecting portion 2, the large conductive plate 21 and the small conductive plate 22 are alternately arranged, and an electric field field is formed between the conductive plates at equal intervals.

A drive rod shaft 41 is provided parallel to the rotary shaft 23 at a position outside the circumference of the disk-shaped conductive plate of the dust collecting portion 2, and the drive rod shaft 41 is provided between the large and small conductive plates 21, 22 and. The base ends of the drive rods 42 loaded on both sides are attached. A scriber 4 that contacts the large and small conductive plates 21 and 22 is provided at the tip of the drive rod 42. The drive rod shaft 41 makes a rotary reciprocating motion so that the scriber 4 moves in the radial direction of the rotating large and small conductive plates 21, 22, the drive rod 42 makes a fan-shaped motion, and the scriber 4 makes the scriber 4 large and small conductive plates 21, 22. It is designed to move around the surface.

Below the dust collector 2, large and small conductive plates 21, 22 are provided.
A collecting unit 3 for collecting scraped off oil particles and particles is provided so that a batch discharge process can be performed. In the dust collector having the above-described configuration, when a gas containing dust such as oily smoke is fed into the gas introduction section, it flows into the ionization section 1,
When passing, the dust particles are ionized into charged particles and are sent to the dust collector 2. In the dust collecting part 2, since it enters into the electrostatic field generated by the positive and negative potentials applied to the large and small conductive plates 21 and 22, the charged particles are accumulated on the large and small conductive plates 21 and 22 by the Coulomb force. Particles are deposited on the large and small conductive plates 21 and 22 to form a medium layer, and when the medium layer becomes thick, the Coulomb force of the electrostatic field is reduced, the suction ability for charged particles is lost, and the dust collecting action is reduced.

In order to remove dust particles accumulated on the large and small conductive plates 21 and 22, the positive and negative potentials applied to the large and small conductive plates 21 and 22 of the dust collecting part 2 are cut off to stop the inflow of gas. Dust collector 2
Rotating the rotary shaft 23, rotating the large and small conductive plates 21 and 22 integrally, driving the drive rod shaft 41, the drive rod 42 makes a fan-shaped motion, and the scriber 4 at the tip is the center of the large and small conductive plates 21 and 22. And the outer peripheral edge reciprocally in the radial direction, and the movement trajectory of the scriber 4 is combined with the rotational movement of the large and small conductive plates 21 and 22,
The dust collecting surfaces of the large and small conductive plates 21 and 22 are completely moved, and the scriber 4 scrapes off oil dust and the like accumulated on the large and small conductive plates 21 and 22. The scraped oil dust and the like falls under its own weight to the collecting unit 3 below the dust collecting unit 2, and the dust and the like collected in the collecting unit 3 are collectively discharged and collectively processed.

FIG. 4 is a vertical sectional view showing a second embodiment of the present invention. A plurality of scribers 4 are attached to the drive rod 42 of the dust collector 2 at regular intervals. The drive rod 42 is rotated by the cam mechanism 5 installed in the lower part of the dust collecting unit 2 to move the large and small conductive plates 21, 22.
The scriber 4 moves reciprocally over a short distance on the radius from the outer peripheral edge toward the rotary shaft 23, and the scriber 4 moves on the dust collecting surfaces of the large and small conductive plates 21 and 22 to completely remove oil stains and the like. be able to.

The scriber may be in the form of a continuous blade or an intermittent blade over the entire length of the drive rod. Figure 5
3 is a vertical cross-sectional view showing a third embodiment of the present invention, in which a large and small conductive plate 2 is provided between the large and small conductive plates 21 and 22 in the collecting part 3 and on both sides.
Fixed rod 3 inserted toward the central rotation shaft 23 of 1, 22
1 is installed, and the large and small conductive plates 21 and 22 are provided on both sides of the fixed rod 31.
Attach the elongated scriber 6 that comes into contact with. When the large and small conductive plates 21 and 22 rotate, the dust collecting surfaces of the large and small conductive plates 21 and 22 are swept by the elongated scriber 6, and oil dust and the like are scraped off.

FIG. 6 is a vertical cross-sectional view showing a fourth embodiment of the present invention. Four large conductive plate holes 24 provided in the large conductive plate 21 are provided near the outer periphery to insulate the large conductive plate holes 24. The electrically conductive rod 25 penetrating therethrough is connected to the outer periphery of the small electrically conductive plate 22. A drive shaft 43 coaxial with the rotary shaft 23 and having a different drive source on the outer diameter of the rotary shaft 23.
The drive shaft 43 is provided with drive rods 44 of the number between the large and small conductive plates 21 and 22, and the elongated scribers 6 are attached to both sides of the drive rod 44. When the drive shaft 43 is rotated, the drive rod 44
The long scriber 6 can rotate to scrape off oil stains accumulated on the large and small conductive plates 21 and 22.

FIG. 7 is a longitudinal sectional view showing a fifth embodiment of the present invention. The large and small conductive plates 2 constructed in the fourth embodiment of FIG.
In the elongated scriber 6 of 1, 22 and the drive rod 44,
The drive shaft 43 is fixed, that is, the drive rod 44 and the elongated scriber 6 are fixed, and the large and small conductive plates 21 and 22 are rotated, so that the oil dust accumulated on the large and small conductive plates 21 and 22 is removed. It is intended to be scraped off by.

The large and small conductive plates, the rotary shaft, the drive shaft, the drive rod, and the scriber in the dust collecting portion 2 may have various structures other than those in the above embodiments. The large conductive plate holes 24 are provided on the concentric circles equidistant from the axis of the large conductive plate 21 or on the concentric circles in the vicinity of the outer periphery of the large conductive plate 21 at unequal intervals so as to penetrate the conductive rods 25. You can also

The small conductive plate 22 may be fitted to the rotating shaft 23 in an outer ring cylinder made of an insulating material and connected by a conductive rod 25. As shown in the longitudinal sectional view of the sixth embodiment of the present invention in FIG. 8, the conductive rod 25 of the small conductive plate 22 is insulated and provided on the outer periphery of the large conductive plate 21, and the large conductive plate hole 24 is formed in the large conductive plate 21. It is also possible to connect to the outer circumference of the small conductive plate 22 without providing.

The scriber 4 is constructed so as not to come into contact with the large and small conductive plates 21 and 22 while the normal gas is flowing in and the dust collector is operating. When scraping off the oil stains by the scriber 4, the blade of the scriber 4 is tilted by a certain angle with respect to the drive rod 42 so that the blades of the large and small conductive plates 21, 22 come into contact with the blades. Even when the long scribe 6 is equipped, the same configuration can be used.

When the scriber 4 is actuated simultaneously with the operation of the dust collector to scrape off oil stains or the like, the drive rod 42 or the scriber 4 is made of an insulating member to prevent conduction between the large and small conductive plates 21, 22. It goes without saying that all of these are easy modifications of the present invention and are included in the gist of the present invention.

[0022]

According to the present invention, charged dust particles can be easily scraped off by attaching a scriber to the surface of a conductive plate on a pair of conductive plates to which positive and negative potentials are applied. Therefore, it has an effect of surely removing dust without deteriorating the ability of the conductive plate to adsorb particles. Dust attached to the conductive plate is mechanically swept by the scriber by rotating the conductive plate or rotating and moving the scriber, so it can be easily removed, and there is no incomplete sieving due to vibration and impact of the conductive plate. In addition, the effect of obtaining the operation of the dust collector which is complicated and troublesome by the conventional washing with water can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a configuration showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the first embodiment of the present invention.

FIG. 3 is a three-dimensional view of an ionization part, a dust collection part and a collection part showing a first embodiment of the present invention.

FIG. 4 is a vertical sectional view showing a second embodiment of the present invention.

FIG. 5 is a vertical sectional view showing a third embodiment of the present invention.

FIG. 6 is a vertical sectional view showing a fourth embodiment of the present invention.

FIG. 7 is a vertical sectional view showing a fifth embodiment of the present invention.

FIG. 8 is a vertical sectional view showing a sixth embodiment of the present invention.

FIG. 9 is a schematic cross-sectional view showing a conventional electrostatic electronic dust collector.

[Explanation of symbols]

 1 Ionization Part 11 Discharge Metal Wire 12 Ground Metal Plate 2 Dust Collection Part 21 Large Conductive Plate 22 Small Conductive Plate 23 Rotating Shaft 3 Collection Part 31 Fixing Rod 4 Scriber 41 Drive Rod Shaft 42, 44 Drive Rod 43 Drive Shaft

Claims (7)

[Claims] 1. An electronic precipitator having an ionization section in which a high-voltage DC voltage is applied to parallel ground metal plates arranged alternately with discharge metal wires, wherein a pair of circular conductive plates are provided, and the first conductive plate is centered. A positive and negative voltage is applied to the first conductive plate and the second conductive plates which are alternately insulated from each other and arranged in parallel to each other by being fitted to the rotating shaft, and an electric field is generated between the first and second conductive plates to generate a gas. A configuration is provided in which charged particles in the inside are deposited, a scriber is provided between the conductive plates, and a dust collecting section collects dust by scraping off the dust accumulated on the conductive plate by rotating the conductive plate or rotating and moving the scriber. The electrostatic type electronic dust collector that is characterized. 2. Driven by an axis different from the rotation axis of the conductive plate,
The electrostatic electronic dust collector according to claim 1, wherein a scriber is provided at the tip of the drive rod, the tip of which makes a fan-shaped motion in the radius portion of the conductive plate. 3. The electrostatic electron according to claim 1, wherein a plurality of scribes are attached to a drive rod provided in the radial direction of the conductive plate, and the scriber is configured to reciprocate a short distance in the radial direction of the conductive plate. Dust collector. 4. The electrostatic electronic dust collector according to claim 1, wherein a scriber is provided on a fixing rod provided in the radial direction of the conductive plate. 5. A structure in which a drive shaft having a different drive source is provided between the conductive plates coaxially with the rotary shaft of the conductive plate, and a scriber is provided on the drive shaft so that the conductive plate rotates or the scriber rotates. Electrostatic type electronic dust collector. 6. The electrostatic electronic dust collector according to claim 1, wherein the scriber or the drive rod having the scriber is made of an insulating member. 7. The scriber provided between the conductive plates is attached to the conductive plates in a non-contact manner, and when removing dust, the scriber is tilted at a certain angle with respect to the drive rod and brought into contact with the conductive plates. Electrostatic dust collector.