SU1618783A1 - Apparatus for washing articles from electroplating electrolytes - Google Patents

Abstract

The invention relates to liquid treatment. The purpose of the invention is to improve the quality of processing and reduce energy consumption. The device almost completely eliminates the loss of vapors of an organic liquid (coolant) when washing parts of a hydrophobic coolant with a specific weight of more than 1 g / cm3, reduces power consumption and allows direct return of the washed electrolyte to the electroplating bath without adjustment. To do this, the washing process is carried out in a sealed washing chamber (PC), where the coolant is initially supplied under a layer of washed electrolyte until the air is completely displaced from the PC into the atmosphere, then the coolant with the electrolyte layer is drained into a container for storage. at the same time, air passed into the PC, saturated with LF vapor, in the atmosphere of which the parts are washed with a shower. Next, the parts and the inner surface of the PC are washed from the remnants of the coolant with water, feeding it into chamber 1 until complete replacement of air saturated with coolant vapor into the tank for its storage 2 and use in repeated washing cycles. The device includes a PC with a sealed cover 19, a container for storing air saturated with coolant vapor, a container 3 for coolant and electrolyte, and a container 4 for water interconnected and each through pump 5 with PC 1 using pipelines fitted with stop valves. 1 hp f-ly. 1 il. 10 km with

Description

The invention relates to liquid processing, in particular to devices for washing parts from galvanic electrolytes.

The aim of the invention is to improve the quality of processing and reduce energy consumption.

The drawing shows a device for washing parts, General view.

The device comprises ¹ washing chamber 1, a container 2 for storing and feeding into the chamber. Air saturated with vapors of organic liquid (coolant), a container 3 for storing and supplying 15 coolant and electrolyte to the chamber, and a container 4 for storing and supplying water to the chamber , as well as to separate water from the washed coolant. Tanks 2-4 are interconnected and each separately through 20 pump 5 with a flushing chamber 1 using pipelines equipped with shutoff valves - valves 6-18. A storage tank 2, saturated with coolant vapors, is connected to chamber 25 through a sealing cover 19, and a coolant and electrolyte storage tank 3 and a water storage tank 4 are connected to the chamber 1 through its bottom. Nozzles 20 are located inside the chamber for choking parts. The valve 21 is designed to drain the electrolyte from the tank 3, and through the valves 22 and 23, respectively, make up water or drain it from the tank 4.

Washing parts from electrolytes in the proposed device is as follows.

First, an aqueous solution (washed-out electrolyte) and an organic liquid are fed into the washing chamber 1 from the dd tank 3 through the bottom of the chamber: 5; an organic - * electrolyte layer forms on the surface of the organic liquid. The supply is carried out until the air is completely displaced from the chamber into the atmosphere. (Valves 6, 7 and 12 are open while the rest are closed). Since the protective layer of the electrolyte is on the surface of the coolant, the possibility of the formation of coolant vapors in the chamber is excluded, since the evaporation of coolant through the aqueous layer does not occur. Therefore, with this method of filling the coolant chamber, any loss of it with atmospheric air pushed out of the chamber is eliminated. The washed parts can be loaded into the chamber 1 both before and after filling the coolant with a protective layer. After loading chamber sealed krysh- Coy _t 19.

Organic liquid with a layer of electrolyte is drained from chamber 1 through valve 14 back to tank 3, while filling the chamber with air saturated with coolant vapors from tank 2 (valves 10 and 15 are open, the rest are closed). After that, the parts are washed with coolant, feeding its containers 3 with pump 5 to the nozzles 20 of the scrubber, located in the chamber 1 and draining it together with the electrolyte removed from the parts back into the container 3, where the latter are exfoliated. Valves 6, 9 and 10 are open while the rest are closed.

The electrolyte taken from the parts exfoliates from the organic liquid in the tank 3, from which it is partially returned to the galvanic bath. or disposed of, and also partially used to form a protective layer. Organic liquid is stored in tank 3, and is used to wash the following batches of parts. After washing parts from. the electrolyte on their surface and on the walls of the chamber 1 remains an organic liquid, and in the chamber volume - air saturated with its vapor.

In order not to lose these coolant residues and return them to the washing process, they further process the parts and walls of the chamber with water supplied by a pump from tank 4 (valves 8, 9 and 11 are open and the rest are closed). Instead of clean water, if necessary, you can also use aqueous solutions containing additional added substances that improve the washing action of water, but do not affect the course of the next galvanic operation, or (if washing is the final operation of the galvanic process) - not affecting the appearance and operational properties of parts. If water scrubbing is necessary for washing off coolant residues, it is produced by pumping water with a pump 5 from tank 4 onto the shower nozzles of chamber 1. Spray the flushing products (mixture of water and coolant) through the bottom of the chamber and pour them back into tank 4, where they are stratified so that water can be recycled through the chamber continuously. If the washing ability of the aqueous solution is sufficient to wash the parts from the organic liquid by rinsing, then the operation (scrubbing with water and recirculating it through the container 4) is not performed. At the end of the shower, the chamber is filled with water to the top with a pump, while completely displacing the air saturated with coolant vapors in tank 2 for storage and reuse. Valves 8, 9 and 15 are open while the rest are closed.

\ Then the chamber 1 is depressurized, opening the valves 16, the water from the chamber 1 is drained back to the tank 4 through the valves 11 and 16 (the rest are closed), the parts are unloaded from the washing chamber. After that, the installation is ready to download the next batch of parts. Periodically accumulating in the tanks 2 and 4 coolant is passed into the tank 3, opening the valves 17 and 18.

This design of the device allows you to almost completely eliminate the flow rate of the washing organic liquid due to its evaporation and removal of the surface of the parts, it is possible to directly return the electrolyte washed off from the parts without additional adjustment.

Claims (2)

The claims 5 1. A device for washing parts from galvanic electrolytes, containing a washing chamber nozzles for showering and with an airtight cover, a pump connected to a 10 chamber, and a piping system with shutoff valves, which requires that, in order to improve the quality of machining of parts and reduce energy costs, it is equipped with 15 interconnected capacity for storing air saturated with vapors of organic liquid, a capacity for storing organic liquid and electrolyte and a capacity 2θ for storing water, each of these containers through a pump connected to a washing chamber; a container for storing air saturated with vapors of organic liquid is connected through the 25th lid to the washing chamber, and the other two through the bottom. 2. The device according to claim 1, characterized in that the volume of the capacity for storing organic liquid with electrolyte and capacity for storing water is equal to or greater than the volume of the washing chamber.