DD155182B1 - Device for maintaining the concentration and the bath level in galvanic baths - Google Patents

Description

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a) Title of the invention

Device for maintaining the concentration and the bath level in galvanic baths ·

ta) Field of application of the invention

The invention relates to the maintenance of the concentration and the bath level Ln in a galvanic bath and this downstream rinsing images in Gegenstrompringip and can be applied in all processing plants «le galvanizing, Bloxiere * elen, dyers, etc. ·

o) Characteristics of the known technical terms

In galvanic baths occurs by carryover and evaporation losses a steady drop in the bath level, which must be compensated by filling to the original level again. To vejsfiindern that the Elektrcuytgehalt is the rinsing baths unacceptably high, you have twinned the SpUIbader with each other and with the galvanic bath by lifters or * overflows and provided a level controller for the inflow of Ipülflüssigkatt the last lon rinsing. However, this method of operation has the disadvantage that it is difficult to control the return of exactly the same quantities of liquid from one rinsing jar to the other and finally to the galvanic bath itself. "

In DE-PS 11 39 345 is proposed to solve the problem, to connect the rinsing baths with each other and with the galvanic bath by lifter and equip the last rinse with a level controller for the inflow of rinsing liquid About the siphon tube ange-

Closed and connected to a vacuum line pipe socket is the electrolyte or the rinsing liquid before starting the system sucked into the lifter »Check valves are installed in each leg of the siphon pipes.

These and all previously known devices have the disadvantage that they are either too complicated and expensive, or they work too slow. Although the application of the cascade principle avoids these disadvantages, but can be difficult to realize in several rinsing stages in large production facilities, as the depth of the last for the racks is no longer sufficient.

d) Object of the invention

The aim of the invention is a device for returning entrained ions from rinsing baths in the galvanic bath with simultaneous regulation of the bath level.

e) Presentation of the essence of the invention

The technical problem which is solved by the invention _t is to develop a device which is able to transport liquids from one to another bath, the position of the individual baths and also their liquid levels are independent of each other.

The essence of the invention is that the treatment bath and the downstream rinsing baths are interconnected by hoses on one side of a height adjustable pipe section and on the other side a mixing head with a Preßluftzuführung are arranged and that the mixing head with the Preßluftzuführung close to the bottom of Rinsing baths is attached. The mixing head works on the principle of the mammoth pump, whereby a regulation of the bath level is achieved by the connection with the counter-pressure principle simultaneously with the promotion.

The device according to the invention thus makes it possible to recirculate the ions removed during the rinsing process from the treatment bath in countercurrent while at the same time regulating the bath level.

The invention will be explained below with reference to a schematic representation:

Fig. 1 shows a schematic representation of the device Pig according to the invention. 2 shows the principle of an Air-Üft counterpressure regulation

f) Ausführunfsbeispiel

The treatment bath 1, the rinsing baths 2 to 4 are connected downstream. All the baths are connected by hoses 5 »immerse their legs each in the adjacent liquids, wherein on one leg a hochverste libares pipe section 6 and on the other leg a mixing head 7 are arranged with a compressed air supply 8. The liquid level of the last rinsing bath 4 is kept constant by supplying wasiser, which corresponds to the amount of water evaporating in the process. The last rinse 4 to be supplied water amount is controlled by a float valve.

If water now evaporates in the treatment bath 1, the liquid level lowers, and the back pressure in the pipe section 6 decreases. As a result, the compressed air flowing permanently through the mixing head 7 transports so much liquid into the treatment bath 1, the original liquid level is reached again and the backpressure in the pipe piece 6 is thus rebuilt.

This process is repeated from bath to bath and there is a nearly constant flow of liquid from the rinse 4 to the treatment bath 1, which once again leads the depleted during the rinsing process from the treatment bath 1 ions and regulates the other hand, the liquid level of the baths. The permanemt duroh the baths strbv mende compressed air ensures a good mixing your baths and thus increases the rinsing effect.

Since the back pressure in the pipe section 6 can be regulated by adjusting the Bintauchtiefe, both the position of the baths to each other and the liquid level are independent of each other. By applying the erfindungagemäßen process backwater is not possible.

Claims (2)

- 4 -FoundationBansprach 1) Device for maintaining the concentration and the bath level in galvanic baths by recycling rinsing liquid enriched with electrolyte solution into the treatment bath, wherein the treatment bath and the downstream rinsing baths are connected to each other by hoses, whose legs each dip into the adjacent liquids; characterized in that in each case at one leg a height-adjustable pipe section (б) illa respectively at the other leg a mixing head (7) with a compressed air supply (Θ) are arranged. 2) Device according to item 1, characterized in that the mixing head (7) with the Preßluftzuführung (S) is arranged close to the bottom of the respective rinsing bath. For this Z sides drawings