DE521617C - Device for cleaning the discharge electrodes of electrical gas cleaners - Google Patents

Description

Device for cleaning the discharge electrodes of electrical gas cleaners The removal of dust from the electrodes of electrical gas cleaning systems As is known, it is caused by tapping the electrodes from time to time shaken, scraped off by scraper devices or similarly proceeded.

The usual means of shaking the electrodes around the attached Dumping dust consists of doing it mechanically or by hand powered tapping hammers shaking the electrodes or by alternately pushing them through Loosen and stretch, attaching them to adjacent electrodes of the same type or to special ones Impact attacks, jolted in jerks. Such vibration devices for discharge electrodes almost all have the disadvantage that they have complicated gears need to make the vibrations and that also the knocking only happen can if the electrical high voltage is switched off during the knocking process is. In order to avoid the latter, on the other hand, it has been proposed to use knocking hammers or to provide their drive with insulating intermediate links, thus also during tapping the electrodes is possible during operation. This solution of the provided However, task can only be viewed as imperfect because it always involves danger insulation faults and flashovers on the relevant intermediate insulators brings with it.

The invention shows a way, the outflow electrodes, for example can consist of wires or flexible strips, in a simple manner without interruption to purify the electrical current, and is in an exemplary embodiment according to of the drawing described as follows: It denotes: i the tubular, for example Precipitation electrodes, 2 the outflow electrodes, 3 a cover plate in which the collecting electrodes i are grouped together in larger numbers, d. the upper one Holding frame for the outlets 2, 5 the lower guide frame for the outlets 2, 6 tension weights of the individual air outlets, 7 the upper support insulator of the air outlet frame q., 8 a vertically movably mounted support for the upper insulator 7, 9 the return springs of the 1st insulator carrier 8, 11 a limit stop for the lead-through bolt, 12 the lead-through bolt, 13 the support of the lower guide frame 5, 14 the post insulator of the support 13, 15 the carrier for the insulator round built-in), 16 stop buttons on the discharge electrodes 2.

The mode of operation of the device can be seen from the drawing.

For the purpose of cleaning the outflow electrodes 2 is shown schematically by the specified cams of the Balzen 12 pressed down and thereby the carrier 8 of the upper insulator 7 moves against the action of the return springs 9 downwards. the upper suspension .4 and the outlets 2 themselves make this downward Movement with, the outflow electrodes 2 through the slots of the lower guide frame Slide 5 through until the stop buttons 16 on each electrode stop the downward movement stop. If the Electrode system the outlets, which are now placed at the bottom, are loosened until the downward movement, after the bolt 12 has slipped off the 1; oclzen, and the return springs, 9 take action. These are dimensioned so that they the upper carrier 8 with the Drive the isolator 7, the frame 4 and the outlets 2 suddenly upwards until the stop i i terminates the return movement.

When the system declines, the tension weights 6 come into action, which quickly pull the electrodes taut again and thereby eliminate the cause dust adhering to the vents. The process can of course be arbitrary often repeated and, depending on the requirements, by hand or machine drive of the Cam be actuated.

The stroke that the electrode system performs with its carriers and so that the strength of the shaking can be adjusted by i. different Dimensioning of the drive cam, 2. Reinforcement or weakening of the return springs 9, 3. Moving the stop bolt i i, 4. Attaching the stop buttons at different heights i6, 5. More or less large dimensioning of the tension weights 6.

Finally, the shaking movement can be permanent or in certain Periods of time are made.

The electrical current can be interrupted during the cleaning process be or stay on. The latter can be done without endangering the operating team happen because the drive of the shaking device, as far as it comes from the cleaning chamber protrudes, attached only to grounded parts of the electrode suspension (8, 9, io) is.

It may be necessary in the case of particularly firmly adhering types of dust be to increase the shaking stroke, so that the outflow electrodes 2 are in their Loosening bend very far and, as a result, rollover between them and give cause for the collecting electrodes. In such cases it is of course necessary to interrupt the electrical current during the short-sided shaking, In. analogous modification, this shaking device can also be used in conjunction with plate-shaped Precipitation electrodes are applied.

Claims (1)

PATENT CLAIMS: Device for cleaning the wire-shaped or band-shaped Electric gas cleaner discharge electrodes that can be moved in a vertical direction are attached and are moved downwards and abruptly upwards during cleaning, characterized in that each outflow electrode on the downward movement by means of a stop on the lower, fixed guide frame and when the electrode system falls into the upper limit position by means of a tension weight is again pulled taut in a manner known per se.