RU2092628C1 - Drainless galvanic treatment module - Google Patents

Abstract

FIELD: galvanic treatment. SUBSTANCE: module may be used incorporated in automated lines and sections of stationary baths. Module contains bath for galvanic treatment with overflow pipe; first bath for washing with jet formation elements and drain pipeline; second flow-type bath with overflow pipe; electrolyte fraction concentration and separation unit; collector for dilute electrolyte from galvanic treatment; polluted wash water collector; non-polluted desalted water collector connected with generator of the latter; four pumps; two controlled distributors of liquid flow into two directions; and pipeline system. Module additionally contains two filters to remove associated treatment products, controlled distributor of liquid flow into two directions, two pumps, and executive wash water-supply mechanism, and washing bath with drain pipe. EFFECT: enhanced efficiency of treatment. 2 cl, 2 dwg

Description

 The invention relates to the field of galvanochemical processing and surface cleaning of parts and can be used in galvanic and chemical industries as part of automated (mechanized) lines, and as part of stationary sections of the corresponding treatment, with increased requirements for wastewater volume and energy costs associated with both the processing process itself, and with the processes of regeneration of electrolytes and wash water.

 A known galvanic-chemical treatmentless module comprising a galvanochemical treatment bath with an overflow pipe, a washing bath with jets and a drain pipe, a diluted electrolyte collector connected by a pipe and installed at its inlet by a pump, and at its inlet by an overflow pipe bath for galvanochemical treatment, a collection of contaminated water, at its inlet with an overflow pipe of the bath washing with flowing liquid, a block of concentrates Nia and separation of the electrolyte fraction zamknutosoedinenny piping and pump at its inlet with a collection of dilute electrolyte, the filter deep purification flushing water.

 A disadvantage of the known device is the relatively large energy consumption, due to the need to concentrate and separate a significant amount of diluted electrolyte, in particular, at the initial stage of the module, if necessary, several operations of jet washing in the first bath due to, for example, a large value of the washing criterion and (or ) with frequent loading of bathtubs with parts.

 Another disadvantage of this device is its relatively limited technological and functional capabilities, which do not allow, in particular, to provide rinsing of parts and rinsing water purified from associated products, containing the main washable component in technologically permissible concentrations, taking into account the presence of the second washing stage.

 In addition, the other drawback is the relatively large dimensions (volume), in particular, of a collection of unpolluted demineralized water, due to the need to supply only one type of washing water to the formation elements of the jets, the inertia of the concentration and separation of electrolyte fractions, and the frequent loading of the module with parts.

 A new technical result is to reduce the cost of energy and water resources, as well as to expand technological and functional capabilities at various stages of the operation of the drainless galvanochemical processing module.

 Known drainless galvanochemical treatment module comprising a galvanochemical treatment bath with an overflow pipe, a washing bath with jet forming elements and a drain pipe, a washing bath with flowing liquid with an overflow pipe, a diluted electrolyte collector connected by a pipe and installed overflow a pipe with a bathtub for galvanic treatment, a collection of contaminated water connected at its inlet with an overflow pipe of a bathtub with a flowing liquid, a concentration and separation unit for electrolyte fractions, closed by a pipeline and a pump installed at its inlet with a diluted electrolyte collector, the filter for deep cleaning of washing water, according to the invention, is equipped with filters for cleaning associated products of processing, actuators for supplying washing water, a demineralized water collector connected through a pipeline and a pump installed at its outlet with a bathtub for washing with flowing liquid and with elements formed washing bath jets, diluted electrolyte and contaminated water collectors are made in two sections, the first section of the diluted electrolyte collector is connected at the outlet through a filter for cleaning from associated processing products with a concentration and electrolyte fractionation unit, the first outlet of which is connected through a controlled liquid flow distributor in two directions with the entrances of each section of the diluted electrolyte collector, and the second block output with the inlet of the demineralized water collector, the second filter is cleaned The ki from associated processing products is closed through a pump installed at the inlet to the first section of the contaminated water collector and through a pipeline with a controlled liquid flow distributor in two directions, with the inlet of each section of the contaminated water collector, the second section of the last collector connected through the pipeline and installed on it pump outlet with elements for forming bath jets, flushing, the drain pipe of which is connected through a controlled liquid flow distributor in two directions from the inlet and the first sections of the collections of diluted electrolyte and contaminated water, the overflow pipe of the washing bath with running liquid is connected to the inlet of the first section of the collection of dirty water, the deep filter of washing water is closed through a pipeline and a pump installed at its inlet with a washing bath of running liquid, while the actuators for the supply of washing water are installed in pipelines at the inlets in the elements of the formation of jets and at the entrance to the washing bath with flowing liquid, and the bath for galvanic of the treatment is connected to the first section of the diluted electrolyte collector, at least a bi-directional controlled liquid flow distributor located on the drain pipe of the jet washing bath is made in the form of a weight counter with oscillating vessels made of an inert material, such as titanium and its alloys, and a drain pipe jet washing baths are made with a guide nozzle for supplying contaminated water to the vessels of the weight counter.

 The invention is illustrated by drawings (figures 1 and 2), which shows a structural diagram of a drainless module of galvanochemical processing.

 The closed-circuit galvanochemical treatment module (Fig. 1) contains a bath 1 for galvanochemical treatment with an overflow pipe 2 located in the technological sequence, a first wash bath 3 with jets 4 and a drain pipe 5, and a second wash bath 6 with an overflow pipe 7 and a drain pipe 8 , filters 9, 10 for cleaning from associated processing products, block 11 for concentration and separation of electrolyte fractions, collector 12 for diluted electrolyte galvanochemical treatment, collector 13 for contaminated wash water, filter 14 for deep cleaning of wash water, collector 15 of uncontaminated demineralized water connected by a pipeline (not shown in Fig. 1) to the generator of the latter (not shown in Fig. 1), two-way controlled liquid distributors 16, 17, 18 , pumps 19, 20, 21, 22, 23, 24 and actuators 25, 26, 27 for supplying washing water.

 Block 11, made, for example, in the form of a vapor installation, contains an evaporation device 28, the output of which is connected by a pipe 29 to the input of a controlled distributor 16, and a condenser 30, the output of which is connected by a pipe 31 to the collector 15.

 Each of the controlled distributors 16, 17, 18 is made in the form of a main pipeline with a normally open actuator installed on it, for example, the first output of the distributor 16 connected to the output of the normally open actuator, for example, connected by a pipe 32 to the first section of the collector 12, and the second output of the distributor 16 is connected by a pipe 33 to the second section of the collector 12.

 The first output of the distributor 17, connected to the output of the normally open actuator, for example, is connected by a pipe 34 to the first section of the collector 12, and the second output of the distributor 17 is connected by a pipe 35 to the first section of the collector 13.

 And the first output of the distributor 18, connected to the output of the normally open executive, for example, is connected by a pipe 36 to the first section of the collector 13, and the second output of the distributor 18 is connected by a pipe 37 to the second section of the collector 13.

 The output of the first section of the collector 12 is connected by means of a pump 19 and a pipe 38 to the input of the filter 9, the output of which is connected by a pipe 39 to the input of the evaporation device 28 of the block 11.

 The output of the second section of the collector 12 is connected by means of a pump 20 and a pipe 40 to a bath 1, an overflow pipe 2 of which is connected by a pipe 41 to the second section of the collector 12.

 The output of the first section of the collector 13 is connected via a pump 22 and a pipe 42 to the input of the filter 10, the output of which is connected by a pipe 43 to the input of the controlled distributor 18.

 The output of the second section of the collector 13 is connected via a pump 21 and a pipe 44 to the input of the actuator 25, the output of which is connected by a pipe 45 with the elements 4 of the bath 3.

 The outlet of the collector 15 is connected by means of a pump 24 and a pipe 46 to the input of the actuator 26, the output of which is connected by a pipe 47 to the elements 4 of the bath 3 and the input of the actuator 27, the output of which is connected by a pipe 48 to the bath 6, an overflow pipe 7 of which is connected by a pipe 49 to the first collection section 13.

 The drain pipe 8 of the bath 6 is connected via a pump 23 and a pipe 50 to the inlet of the filter 14, the outlet of which is connected by a pipe 51 to the bath 6.

 Collectors 12, 13 and 15 are equipped with level sensors 52, 53 and 54, respectively.

 Moreover, the sensitive elements (electrodes) of the sensor relays 52 and 53 are located in each of the sections of the collectors 12 and 13, respectively.

 Bathtubs 1 and 6 are equipped with single-limit level sensors 55 and 56, respectively.

 As the filter 14, sorption columns 57, 58 with a sorbent of the corresponding galvanochemical processing of the species are used.

 As filters 9 and 10 in the device, depending on the type of main processing of parts in bath 1 (degreasing, etching, coating, anodizing, etc.), ultrafiltration plants, electroflotators, pH electrocorrector, candle and cartridge filters can be used 59 , 60 (Fig. 1, pos. 10), electrolyzers, etc.

 Moreover, as at least a controlled distributor 17 connected to the drain pipe 5 of the bath 3, a weight counter with oscillating vessels 61, 62 made of titanium or its alloys can be used, and the pipe 5 of the bath 3 is equipped with a guide nozzle 63 (Fig. 2 )

 At the same time, to ensure trouble-free and reliable operation of the weight counter, limiters 64, 65 of the stroke of its oscillating vessels 61, 62 are used.

 The block works as follows.

 In the initial state, at the initial stage of the module, in bath 1 are, for example, and in baths 3 and 6 there are no workpieces (not shown in Fig. 1).

 The level of the corresponding processing medium (e.g. electrolyte and cold wash water) in baths 1 and 6 is normal.

 In sections of collectors 12 and 13 there is no diluted electrolyte (in this case) and contaminated (main washable component) rinsing water, respectively.

 The level of unpolluted demineralized (distilled) water supplied from its generator (storage) in the collector 15 is normal (the volume of this water is sufficient to carry out several processes of jet washing).

 Pumps 19, 20, 21, 22, 23, and 24 are off.

 The actuators of the controlled valves 16, 17 and 18 are in the off (normal-open) state.

 Vessels 61, 62 of the weight counter (if it is used to control the process of dividing the flow of liquid discharged from the bath 3 into two directions under the action of the weight of contaminated wash water sequentially poured into the vessels 61, 62) are in the position shown by the solid line in FIG. 2.

 Actuators 25, 26 and 27 are in the off, normally closed, state.

 The composition, concentration of the main components and other parameters of the electrolyte in the bath 1 are normal.

 The wash water of the bath 6 does not contain (or contains an amount admissible by technology) contaminants in the form of the main washable component of the bath electrolyte 1.

 The evaporation device 28 and the condenser 30 of the block 11 are in the off state.

 After the end of the processing time of the parts in the bath 1, their unloading from the latter, they are loaded into the bath 3, transferring bath 1 on its electrolyte surface.

 At the same time, the pump 24 is turned on for a certain time, which ensures the corresponding quality of the jet (in this case) washing, and the actuator is opened (by applying a control signal, remotely or automatically, by a signal from a load sensor, for example, a bath 3).

 Uncontaminated demineralized water from the collector 15 enters through a pipeline 46, an open actuator 26, a pipeline 47 into the elements 4 of the bath 3.

 After that, the parts (manually or with the help of an autooperator) are unloaded from the bath 3, moving relative to the jets of water formed by the elements 4, which ensures a high-quality and economical flushing of the main part (up to 90-95%) of the electrolyte removed by the parts from the bath 1.

 The concentrated (discharged from the bath 3 through pipeline 5 (contaminated with the main washable component of bath electrolyte 1) rinsing water solution is separated using a distributor 17 (by means of a control signal to the input of the normally open actuator and temporarily closing the latter) to the relatively highly concentrated and weakly concentrated parts of the drained from the bath 3 water solutions entering the first sections of the collectors 12 and 13, respectively.

 In the case of using a weight meter as a distributor 17, the distribution of a concentrated stream of wash water drained from the bath 3 occurs as follows.

 The first, most contaminated with the main washable component, part of the concentrated wash water solution from the bath 3 through the pipeline 5, through the guide nozzle 63 (Fig. 2) enters the left vessel 61 of the weight meter, after which the weight meter is rotated (due to the weight of the liquid due to displacement of the center of gravity) counterclockwise (in this case), thereby filling the first section of the collection 12 with the most concentrated wash water solution.

 In this case, the weight counter is in the position shown by the dotted line in FIG. 2, thereby filling the right-hand vessel 62 of the counter with a weakly concentrated wash water solution, after filling of which the weight counter is turned clockwise in the same way as described above, into the original counter, shown by the solid line in FIG. 2 position, thereby ensuring the discharge of slightly contaminated wash water through a pipe 35 into the first section of the collector 13.

 It should be noted that in this case, the volume of contaminated washing water discharged from the bath 3 is equal to the volume of the vessels 61 and 62 of the weight counter.

 After the end of the jet washing process of parts in the bath 3, turn off the pump 24 and by removing the corresponding signal, the actuator 26 (to close it), and the parts are moved and loaded into the bath 6 for their final washing by the immersion method, after which they are moved to the next one according to the technology bath processing.

 After this, baths 1, 3 and 6 are ready for galvanochemical processing of a new batch of parts.

 Moreover, the feature of the subsequent processing of parts, as well as the processes of maintaining the composition and level of the processing media in baths 1 and 6, as well as providing rinsing water in the bath 3, is as follows.

 1. The filtering process is carried out from related processing products using a filter 9, accumulated in the first section of the collection 12 of a relatively highly concentrated part of the solution of washing water (diluted electrolyte). Moreover, if the concentration of the main washable component in the wash water solution is sufficient to effectively compensate for the loss of electrolyte from bath 1 (for example, if bath 1 is a bath with heating of its processing medium, chromium plating, nickel plating, etc.), then the evaporation device 28 block 11 is not included, and cleaned from associated processing products (foam, debris, metal particles, emulsifiers, etc.) immediately, using pump 19, through pipelines 39, 29 or through several cycles using a distributor 16, piping 33, the second section of the collector 12. Then turn on the pump 20, and the purified concentrated wash water solution (diluted electrolyte) through the pipe 40 enters the bath 1, and its excess through the overflow pipe 2 and the pipe 41 are returned to the second section of the collector 12. Thus Thus, according to the signals from the sensors 55 and 52, replenishment and the presence of the required liquid levels in the bath 1 and the collector 12 occur. After replenishing the electrolyte level in the bath 1, the pump 20 is turned off.

 If the bath 1’s electrolyte is “cold” (if evaporation losses are minimal), then the inclusion of the evaporation device 28 and condenser 30 of block 11 is added to the above process, thereby providing the process of active additional concentration of a relatively highly concentrated part of the wash water solution, with the appearance of condensate (demineralized water), which from the second outlet of the block 11 through the pipeline 31 enters the collector 15 for further use when washing operations in the baths 3 and 6.

 2. Simultaneously with the above, a filtering process is carried out from the associated processing products of the collection 13 collected in section 1 of the relatively weakly concentrated part of the wash water solution (highly diluted electrolyte). To do this, turn on pump 22 according to the corresponding signal from sensor relay 53, and a weakly concentrated portion of the wash water solution begins to flow through line 42 to, for example, candle cartridge filters 59, 60 of filter 10, from the outlet of which, through pipeline 43, it is highly cleaned of associated processing products the diluted electrolyte at once or after several cycles, with the help of the distributor 18 enters through the pipeline 37 into the second section of the collector 13, as evidenced by the corresponding signal of the sensor relay 53. At the same time, it accumulated in watts In the second section, a purified, weakly concentrated wash water solution (highly diluted electrolyte) is used with the pump 21, pipelines 44, 45 and an actuator 25 for the purpose of jet washing the next batch of parts in bath 3, which makes it possible to obtain an even more concentrated wash water solution in the stock of this bath , thereby reducing the power of the evaporation device (in particular).

 3. A deep cleaning process is also carried out (including the main washable component of bath electrolyte 1) of the wash water of the bath 6. In this case, the pump 23 is turned on and the washing water is circulated along the circuit: bath 6 drain pipe 8 pump 23 pipeline 50 - sorption columns 57, 58 filter 14 pipe 51 bath 6.

 Compensation for the loss of wash water in the bath 6 (for example, in the case of evaporation, if the bath 6 is a warm or hot wash bath) is carried out using the pump 24, pipelines 46, 48 and the actuator 27 by turning on the pump 24 and the actuator 27 for a certain time, for example, by a signal from the sensor-relay 56. In this case, possible excess washing water through the overflow pipe 7 and pipe 49 enters the first section of the collector 13. In addition, this supply of washing water is possible and necessary for, for example, blowing off the generating I on the surface of the wash water baths 6 impurities in the form of foam, and other debris.

Thus, executive modules allow:
significantly (up to 30-40%) reduce the cost of energy and water resources by increasing the number of stages of the distribution of fluid flow in two directions, changing the scheme of jet washing and reuse of washing water, including various degrees of contamination,
to expand technological and functional capabilities by ensuring the module is embedded in any technological process with various (in temperature) modes of primary treatment baths and by increasing the types of processes being implemented, in particular, in an immersion washing bath.

Claims (2)

 1. A closed-circuit galvanochemical treatment module comprising a galvanochemical treatment bath with an overflow pipe, a washing bath with jet forming elements and a drain pipe, a washing bath with flowing liquid with an overflow pipe, a diluted electrolyte collector connected by a pipe and installed at its outlet a pump, and at its inlet an overflow pipe with a bath for galvanic chemical treatment, a collection of contaminated water connected at its inlet to an overflow a tubing of a washing bath with flowing liquid, a concentration and separation unit for electrolyte fractions, closed by a conduit and a pump installed at its inlet with a diluted electrolyte collector, a filter for deep cleaning of washing water, characterized in that it is equipped with filters for cleaning related products from processing by actuators for rinse water supply, a demineralized water collector connected through a pipeline and installed at its outlet, a pump with a washing bath with flowing liquid and with washing bath jets forming elements, diluted electrolyte and contaminated water collectors are made in two sections, the first diluted electrolyte collector section is connected at the outlet through the filter for cleaning from associated processing products with the concentration and electrolyte fractionation unit, and the first outlet of which is connected through a controlled liquid flow distributor to two directions with the entrances of each section of the diluted electrolyte collector, and the second output of the block with the input of the demineralized water collector , the second filter for cleaning from associated processing products is closed through an inlet pump with the first section of the contaminated water collector and through a pipeline with a controlled liquid flow distributor in two directions with the inlet of each section of the contaminated water collector, and the second section of the last collector is connected through the pipeline and installed at its outlet there is a pump with elements of formation of washing bath jets, the drain pipe of which is connected through two the inlet of the first sections of the collections of diluted electrolyte and contaminated water, the overflow pipe of the washing bath with flowing liquid is connected to the inlet of the first section of the collection of contaminated water, the deep filter of washing water is closed through a pipeline and a pump installed at its inlet with a washing bath with flowing liquid, actuators for supplying washing water are installed in pipelines at the inlets in the jet formation elements and at the outlet of the washing bath with flowing liquid, and the bath for galvanochemical treatment is connected to the second section of the diluted electrolyte collector.  2. The module according to claim 1, characterized in that at least a controlled liquid flow distributor in two directions, located on the drain pipe of the jet washing bath, is made in the form of a weight counter with oscillating vessels of inert material, such as titanium and its alloys, and the drain pipe of the jet washing bath is made with a guide nozzle for supplying contaminated water to the vessels of the weight counter.

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