JPS627456A - Electric dust precipitator - Google Patents

Abstract

PURPOSE:To obtain the titled precipitator having dust collection efficiency, by providing receiving electrodes each having an impact transmitting wt. provided to the lower end thereof and providing discharge electrodes each comprising a pipe having discharge needles provided thereto at a right angle to the receiving electrodes in a protruded state and a hammer mechanism striking the wts. CONSTITUTION:Each receiving electrode 4 is formed by providing an impact transmitting wt. 6 to the lower end of a rod 5. A large number of thus formed receiving electrodes 4 are successively mounted to a horizontal frame 7 in parallel at predetermined intervals. Further, a large number of discharge electrodes 8 each comprising a pipe are parallelly provided at the positions corresponding to the receiving electrodes 4 and a large number of discharge needles 9 are provided to both side surfaces of each discharge electrode 8 at a right angle to the receiving electrodes 4 in a protruded state. Therefore, when impact is applied to the receiving electrodes 4 by a hammer mechanism 10, the wts. 6 respectively continue minute vibration and dust can be certainly released. Further, magnetic fields free from irregularity are formed to a gas stream by the discharge electrodes provided at a right angle to the receiving electrodes 4 and power consumption can be markedly reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electrostatic precipitator, and more particularly to an electrostatic precipitator that combines a receiving electrode and a discharge electrode.

<Prior art> Conventionally, as an electrostatic precipitator, the Cottrell type, which is composed of a linear discharge electrode 1 and a plate-shaped receiving electrode (dust collector) 2, as shown in Fig. 2, was first developed in a foreign country. A wide variety of discharge electrodes 1 and receivers 11ti2 used in these devices have been developed and used each time, as shown in FIGS. 3 and 4, respectively. Furthermore, in Japan, a plate-shaped discharge electrode l having discharge needles 3 protruding from the left and right edges parallel to the receiving electrode 2 as shown in FIG. 5 is used, and a shock is applied to the receiving electrode 2. A NAFCO type electrostatic precipitator equipped with a hammer mechanism capable of
Dust removal devices were developed and put into use. 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
No. 0 hit.

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.

<Problems to be Solved by the Invention> However, all of the electrical concentrators according to the conventional techniques described above consume a lot of power (Kw), therefore, require a very high voltage, and the discharge capacity of the discharge electrode is limited. There were disadvantages such as the fact that the receiving electrode was difficult to vibrate efficiently even when the receiving electrode was hit with a hammer, making it difficult to ensure that the dust adhering to the receiving electrode fell off. .

The device according to the present invention is a completely new technology developed in view of these drawbacks of the conventional technology, and is particularly capable of reducing power consumption, and is also capable of efficiently and reliably dropping dust attached to electric bridges. The aim is to provide a device that can do this.

Means for Solving the Problems> In the present invention, for example, as shown in FIG. 1, the receiving electrode 4 is constructed by providing an impact transmitting weight 6 at the lower end of a rod 5 made of pipe steel, square steel, round steel, etc. A large number of receiving electrodes 4 are mounted in parallel on a horizontal frame 7 at predetermined intervals, and a large number of discharge electrodes 8 made of pipes are arranged in parallel at positions corresponding to the receiving electrodes 4, and a large number of discharge needles are arranged in parallel at positions corresponding to the receiving electrodes 4. 9 are provided protruding from both sides of the discharge electrode 8 which is perpendicular to the 11i recording/receiving electrode 4. Further, a hammer mechanism 10 is provided on the side of the weight 6 of the receiving electrode 4.

<Function> As described above, the receiving electrode 4 of the device according to the present invention is constructed by attaching the impact transmitting weight 6 to the lower end of the rod 5 and fixing this in parallel to the horizontal frame 7. Since the hammer 1+MlO is provided adjacent to one of the outer weights 6, when an impact is applied to the outer receiving electrode 4 with this hammer machine 4M10, this is transmitted to the weight 6 as shown in FIG. The force is transmitted from 6a to 6b, 6c, etc. in order, and then due to the reaction, this time...
・The force returns to 5c, 5b, and 5a and is transmitted like a pendulum.

Therefore, by repeating the above-mentioned movement, the receiving electrode 4 continues to vibrate slightly like a tuning fork, and by this fine vibration, dust etc. adhering to the receiving electrode 4 can be reliably peeled off and dropped downward.

In addition, in the present invention, since a large number of discharge needles 9 are arranged so as to protrude from the discharge electrode 8 at right angles to the receiving electrode 4, it is possible to provide an even magnetic field to the gas flow. It is possible to reduce the voltage by about 30% compared to the conventional method,
Therefore, power consumption can be significantly reduced, and dust collection efficiency can be significantly increased.

<Example> An example of the apparatus according to the present invention will be specifically explained with reference to the figures. In FIGS. 1(A) and (B),
is a receiving electrode, which is constructed by providing a shock transmitting weight 6 at the lower end of a rod 5, and is suspended from a horizontal frame 7. 8
is a discharge electrode made of a square pipe, and a large number of discharge needles 9 are protruded from both sides of the discharge electrode so as to be perpendicular to the receiving electrode 4.

10 is a hammer mechanism.

FIG. 10 is a plane diagram showing the discharge state of the device according to the invention.

Next, FIGS. 11 and 12 are detailed views of the device according to the present invention, in which 11 is a main body casing, 12 is a ceiling plate, 1
3 is a hopper for taking out dust, 14 is a power receiving frame, 15
Discharge +L 16 is a hammer, 17 is a hammer handle, L8 is a shaft, 19 is a discharge electrode port, 2o is a support insulator, 21 is a blower, 22 is a damper, 23 is a stack, and 24 is a motor.

In the above embodiment, the receiving electrode 4 was composed of a single wooden stick 5, but the receiving electrode 4 was composed of a fork 25 having an inverted U-shape as shown in FIGS. 13 to 15. It is also possible to do so.

When this forked rod 25 is used, the principle of a tuning fork can be used more effectively, and the receiving electrode 4 can be constantly provided with slight vibrations. In the case of this forked rod 25, it is also possible to spray a cleaning or humidifying liquid between the rods.

<Effects of the Invention> Since the device according to the present invention has the structure and operation described above, it can greatly increase the electron emission ability, and therefore can operate at a significantly lower voltage than conventional ones, thereby reducing consumption. Since electric power (Kw) can be reduced and micro vibrations can always be applied to the receiving electrode, dust adhering to the receiving electrode can be reliably peeled off and dropped downward, and the dust collection performance can be improved. It has characteristics such as being able to significantly increase the

[Brief explanation of the drawing]

FIG. 1 is a simplified explanatory diagram of the device of the present invention, FIGS. 2 to 9 are explanatory diagrams showing a conventional example, FIG. 10 is an explanatory diagram showing the discharge state of the device in FIG. 1, and FIGS. FIG. 12 is a detailed view of the device of the present invention, and FIGS. 13 to 15 are explanatory diagrams of other embodiments of the device of the present invention. 1.8 is a discharge electrode, 2, 4 is a receiving electrode, 3, 9 is a discharge needle, 5
．． 25 is a rod, 6 is a weight, 7 is a frame, 10 is a hammer mechanism, 14 is a power receiving frame, 15 is a discharge frame, 16 is a hammer, 2
1 is a blower, and 23 is a stack.

Claims (1)

[Claims] A large number of receiving electrodes each having a shock transmitting weight provided at the lower end of a rod are arranged in parallel on a horizontal frame, and a large number of discharge electrodes made of pipes are arranged in parallel at positions corresponding to the receiving electrodes, and a large number of discharge needles are connected to the receiving electrodes. 1. An electrostatic precipitator comprising: a hammer mechanism projecting from the discharge electrode so as to be perpendicular to the receiving electrode; and a hammer mechanism capable of applying an impact to the weight of the receiving electrode.