JPS627458A - Electric dust precipitator - Google Patents

Abstract

PURPOSE:To obtain the titled precipitator capable of removing adhered dust in an extremely efficient manner, by parallelly arranging receiving electrodes each formed by providing impact transmitting wts. to both lower leading ends of an inverted U-shape bifurcated rod to a horizontal frame and arranging a spray apparatus in the lateral side. CONSTITUTION:Each receiving electrode 4 is formed of an inverted U-shape bifurcated rod 10 and the impact transmitting wts. 6 provided to both lower leading ends of said rod 10. A large number of thus formed receiving electrodes 4 are successively mounted to a horizontal frame 7 in parallel so as to hold predetermined intervals therebetween and a spray apparatus 11 is further provided at the lateral position of the bifurcated rods 10 so as to arrange the leading end nozzle 12 thereof between both legs of the bifurcated rods 10. Therefore, when impact is applied to the receiving electrodes 4 by a hammer mechanism, said impact is transmitted to the wts. 6 like a pendulum and adhered dust can be certainly released. Further, a chemical solution is sprayed from the spray apparatus 11 to make it possible to efficiently wash off the dust adhered to the receiving electrodes 4.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an electrostatic precipitator, and more specifically to an electrostatic precipitator consisting of a receiving electrode composed of an inverted U-shaped forked rod and a spray device. This is related to dust storage.

<Prior art> Conventionally, as an electrostatic precipitator, the Cottrell type, which consists of a linear discharge electrode 1 and a plate-shaped receiving electrode (collecting electrode) 2, as shown in Fig. 2, was first developed in a foreign country. And these 'A'
A wide variety of discharge electrodes 1 and receiving electrodes 2 used in the 71 have been developed and used each time, as shown in FIG. 3 or 4, respectively. [I] In Japan, the 5th
As shown in the figure, the Nafkota uses a plate-shaped discharge electrode 1 with discharge needles 3 protruding from the left and right side edges parallel to the receiving electrode 2, and is equipped with a hammer mechanism capable of applying an impact to the receiving electrode 2.
Eve's electrostatic precipitator, the 9-opening titanium tube shown in Figure 6, and the Hurler type electrostatic precipitator in which the scraper and receiving electrode 2 are each constructed of round pipes have been developed and used. Ta.

Also, devices such as those shown in FIGS. 7 and 8 have been used, which are partially improved versions of the Hurler type described above or arranged in combination with the Cottrell type. More recently, a device as shown in FIG. 9 has been developed in which the discharge electrode 1 is made of a saw blade and the receiving electrode 2-'' is made of a double wire mesh.

On the other hand, Japanese Patent Publication No. 59-19743, No. 59-4867
Publication No. 0.

A method of moving the electrode as shown in Japanese Patent No. 59-50383, and a method equipped with a re-scattering prevention device have also been developed.

The receiving electrode 2 as shown in FIG. 9 above is composed of a double wire mesh,
A device has also been developed that allows a predetermined gap to be provided between the front and back wire meshes and spray without causing sparks during charging between the two.

<Problems to be solved by the invention> However, all of the electrostatic precipitators according to the conventional techniques as described above consume a lot of power (KW), therefore require a very high voltage, and the discharge capacity of the discharge electrode is limited. Moreover, it is difficult to efficiently clean dust and the like that has adhered around the receiving electrode by spraying a chemical solution or the like using a spray device or the like.

The device according to the present invention is a completely new technology developed in view of these conventional drawbacks, and is particularly capable of easily and reliably spraying a chemical solution, and the spray can be used to clean the receiving electrode or to The purpose is to provide a device that can reduce the resistance value of dust by creating a moist state around it and solve the reverse ionization phenomenon caused by high-resistance substances.

Means for Solving the Problems> In the apparatus according to the present invention, as shown in FIG.
A shock transmitting weight 6 is provided at the lower end of the receiving electrode 4.
A large number of discharge electrodes 8 made of pipes are arranged in parallel on a horizontal frame 7 at predetermined intervals in order (=j), and a large number of discharge electrodes 8 made of pipes are arranged in a row at positions corresponding to the receiving electrodes 4. Discharge needles 9 are provided protruding from both sides of the discharge electrode 8 so as to be perpendicular to the receiving electrode 4, and the forked rod ■0 of the receiving electrode 4 is provided.
A spray device 11 is provided at a lateral position, and a tip nozzle 12 attached to the tip of the device 11 is disposed in the gap between the prongs of the forked rod 10.

Function> As described above, in the device according to the present invention, the receiving electrode 4 is a forked rod IO.
A spray device 11 is provided on the side of the spray device 11, which sprays liquid particles 13 and the like from its tip nozzle 12 into the gap between the prongs of the forked rod 10 even during charging, as shown in FIGS. 1 and 1O. Since it is configured so that it can be sprayed, the reverse ionization phenomenon caused by the high-resistance substance can be completely solved by cleaning the receiving electrode 4 or creating a moist state by the spray.

In particular, in the device of the present invention, as shown in FIG.
The liquid particles 13 sprayed from the tip nozzle 12 enter the inside of the receiving electrode 4 for dust collection, collide with the receiving bottle 4, wash it and fall, and some ultrafine particles of the liquid particles 13 13a flows out between the electrodes once, but is quickly charged and attracted to the receiving electrode 4.

<Example> To specifically explain an example of the apparatus according to the present invention using simplified diagrams, in FIGS. It is constructed by providing impact transmitting weights 6 at both lower ends of a forked rod 10 and suspending them in parallel from a horizontal frame 7, and a spray device 11 is provided at a side position of the receiving electrode 4. , liquid particles 13 are ejected from the tip nozzle 12 into the gap between the forked rods 10.
It is constructed so that it can be sprayed.

Also, when this receiving electrode 4 is subjected to an impact via a hammer mechanism or the like, this impact is transmitted to the weight 6, a force is transmitted from the outer weight 6 to the inner peg 6, and the reaction force is transmitted in the opposite direction. It is transmitted back like a pendulum, and the principle of a tuning fork is also added to the receiving electrode 4.
The structure is such that a slight vibration is constantly applied to the receiving electrode 4, thereby causing dust attached to the receiving electrode 4 to fall.

In the figure, reference numeral 8 denotes a discharge electrode, which is constructed by protruding a large number of discharge needles 9 at right angles to the receiving electrode 4 above and below both sides of a square pipe.

<Effects of the Invention> Since the device according to the present invention has a structure and function similar to a double series, it can spray a chemical solution etc. into the gap between the forked rod-shaped receiving electrodes and remove dust etc. attached to the receiving electrodes very efficiently. The device of the present invention can solve the reverse ionization phenomenon caused by high-resistance materials by creating a moist state around the receiving electrode. This device has features such as being able to carry out the above action by spraying a chemical solution or the like from the device.

[Brief explanation of the drawing]

FIG. 1 is a simplified explanatory diagram of the apparatus of the present invention, FIG. 1 and 8 are discharge electrodes, 2.4 are receiving electrodes, 3 and 9 are discharge needles,
5.10 is a support, 6 is a weight, 7 is a horizontal frame, Il is a spray device, 12 is a nozzle, and 13 is a liquid droplet.

Claims (1)

[Claims] A large number of receiving electrodes each consisting of an inverted U-shaped forked rod with shock transmitting weights provided at both lower ends are arranged in parallel on a horizontal frame, and a spray device is arranged on the side of the forked rod of these receiving electrodes. An electrostatic precipitator characterized by being configured as follows.