RU2092627C1 - 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; bath for jet washing with drain pipeline; immersion washing bath with overflow pipe; collector for dilute electrolyte from galvanic treatment; wash water pollutant collector; non-polluted desalted (distilled) water collector connected with generator (accumulator) of the latter; electrolyte (solution) fraction concentration and separation unit; wash water fine cleaning filter; four pumps; and pipeline system. Module is additionally provided with jet washing bath equipped with float-type level sensor. EFFECT: enhanced efficiency of treatment. 3 cl, 1 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 both as part of automated (mechanized) lines and as part of stationary sections of the corresponding type of processing or as stand-alone installations.

Known drainless galvanochemical treatment module containing located in the technological sequence of the galvanochemical treatment bath with a drain pipe, a first washing bath made in three stages and equipped with an overflow pipe, a second washing bath made in flow and equipped with an overflow pipe, a collection of diluted electrolyte and contaminated washing water, block concentration and separation of electrolyte fractions, a deep filter of diluted electrolyte and contaminated washing in odes, two pumps and piping system [1]
The disadvantages of the known device are the relatively low efficiency and quality of washing, due to the lack of the possibility of high-quality washing of parts containing blind holes, grooves and recesses, and the need for a constant supply of demineralized and (or) reused water to the second washing bath.

 In addition, this device is quite energy-intensive, since during its operation it is necessary to clean and concentrate a mixture of diluted electrolyte and contaminated washing water, without separation of the latter.

Closest to the claimed technical essence and the achieved result, the known solution, selected as a prototype, is a drainless galvanochemical processing module, comprising a galvanochemical treatment bath with an overflow pipe, a jet washing bath with a drain pipe, an immersion washing bath made by flow and equipped with an overflow pipe, as well as a collection of diluted electrolyte (solution) of galvanochemical treatment, performed two-section, a collection of contaminated washing water, a collection of unpolluted demineralized (distilled) water connected by a pipeline to the generator (accumulator) of the latter, a concentration and separation unit for electrolyte (solution) fractions, a deep filter for washing water, four pumps, two normally open actuators and a piping system, wherein the first outlet of the diluted electrolyte (solution) collection of the galvanochemical treatment is connected by means of the first pump and pipeline to the inlet a unit for concentrating and separating fractions of an electrolyte (solution), the first outlet of which is connected by pipelines through the first normally open actuator and directly to the corresponding sections of the collection of diluted electrolyte (solution) of galvanochemical treatment, and its second outlet is connected by a pipeline to the collector of uncontaminated demineralized (distilled) water the outlet of which, by means of a second pump and a pipeline, is connected to the jet formation elements of a jet washing bath, a drain pipe the line of which is connected by pipelines through a second normally open actuator and directly to the first section of the collection of diluted electrolyte (solution) of galvanochemical treatment and to the collection of contaminated washing water, the outlet of which is connected to the inlet of the deep filter of washing water through a third pump and pipeline, the output of which is connected a pipeline with an immersion flushing bath, the overflow pipe of which is connected to a collection of contaminated flushing water, and the second sec uu collection dilute electrolyte (solution) galvanochemical processing connected via a fourth conduit with the pump and for a bath galvanochemical processing overflow pipe which is connected to the second section of the collection dilute electrolyte (solution) galvanochemical treatment [2]
A disadvantage of the known device selected as a prototype is its relative complexity, due to the need to control the separation of the flows of the drained liquid from the jet washing bath and from the first outlet of the concentration and separation of electrolyte fractions (solution) and, as a result, the device has normally open actuators and additional pipelines. In addition, in this device, it is difficult to place the sensors of the main washable component in the event that the separation of the flows of the drained liquid occurs according to the concentration of the latter.

 Finally, another disadvantage of this device is its relatively low efficiency and quality of washing parts using the submersible method, since during operation of the module, contaminated washing water can enter the cleaner water of the second washing bath, which, as a result, can lead to an increased load of the deep filter of the washing water, especially since the performance of the latter is limited, and (or) the deterioration of the quality of washing parts, for example, due to the “leakage” of contaminants in the washing bath or the presence of the latter in bathtub.

 A new technical result consists in simplifying the device, increasing the efficiency of the filter for deep cleaning of washing water and the quality of washing operations.

 A new technical result is achieved by the fact that the drainless galvanochemical treatment module, comprising a galvanochemical treatment bath with an overflow pipe, a jet wash bath with a drain pipe, an immersion wash bath made with a flow and equipped with an overflow pipe, and also a diluted electrolyte (solution) collector ) galvanochemical treatment, a collection of contaminated wash water, a collection of unpolluted demineralized (distilled) water, with unified by a pipeline with a generator (accumulator) of the latter, a concentration and separation unit for electrolyte (solution) fractions, a deep filter for washing water, four pumps and a piping system, the first outlet of a collection of a diluted electrolyte (solution) of galvanochemical treatment being connected through the first pump and pipeline to the inlet a unit for concentrating and separating fractions of an electrolyte (solution), the first outlet of which is connected by a pipe to a collection of a diluted electrolyte (solution) chemical treatment, and its second outlet is connected by a pipeline to a collection of unpolluted demineralized (distilled) water, the drain line of a jet-washing bath is connected to a collection of diluted electrolyte (solution) of galvanochemical treatment, the outlet of a deep-cleaning filter of washing water is connected by a pipeline to an immersion washing bath, the overflow pipe of which connected to the collection of contaminated washing water, and the second outlet of the collection of diluted electrolyte (solution) of galvanochemical treatment of soy inen by means of a fourth pump and a pipe with a bath for galvanochemical treatment, the overflow pipe of which is connected to a collector of a diluted electrolyte (solution) of galvanochemical processing, according to the invention, is provided with at least one second second bath of jet washing with a drain pipe located between the first bath of jet washing and a bath rinse with immersion, equipped in turn with a drain pipe and a pump, and the outlet of the collection of unpolluted demineralized (distilled) water by means of a second pump and pipe, connected to the jet formation elements of the second jet washing bath, a drain pipe of which is connected to the contaminated washing water collector, the outlet of which by means of a third pump and pipeline is connected to the jet formation elements of the first jet washing bath, and the outlet of the washing bath pump by immersion is connected by a pipeline with an inlet of a filter for deep cleaning of washing water.

 Moreover, in the preparation of the electrolyte (solution) of the galvanochemical treatment bath and in the immersion wash bath, demineralized (distilled) water is used. The immersion wash bath is equipped with a float-type level regulator. And as a filter for deep cleaning of wash water, sorption columns with a sorbent are used.

 Comparative analysis with the prototype shows that the inventive device is characterized by the presence of at least one additional bath jet washing and its location, equipping the wash bath with immersion drain pipe and pump, as well as a number of new compounds, expanding the scope of use of demineralized (distilled) water and equipping the wash bath immersion with a float-type level regulator. Thus, the claimed device meets the criteria of the invention of "novelty."

Comparison of the proposed solutions with other known in science and in the field of technology shows that there are known technical solutions that allow for a continuous mode of operation of the galvanochemical processing module. However, their use does not allow to achieve the goal set in the claimed solution, since they do not provide:
the effective operation of the module and the high quality of washing, in particular jet washing, due to the fact that the volume of washing water used for jet washing is rigidly tied to the performance of the concentration and separation unit of electrolyte (solution) fractions entering the last from the diluted electrolyte (solution) collector ) galvanochemical treatment, which is especially negative for the initial stage of operation of the device;
non-closed mode of operation of the module in the second, flow bath of washing by immersion;
the optimal composition of the washing tanks, which leads to an artificial increase (up to 5 pieces) of them in the module and complicates (taking into account the need to supply washing water to the elements of the formation of jets directly from the cascades of bathtubs) the design of the latter.

 This allows us to conclude that the claimed technical solution meets the criterion of "significant differences".

 The drawing shows a structural diagram of a drainless module of galvanochemical processing.

 The closed-circuit galvanochemical treatment module comprises a bath 1 for galvanochemical treatment with an overflow pipe 2 located in the technological sequence, a first jet washing bath 3 with the jet forming elements 4 and a drain pipe 5, a second jet washing bath 6 with the jet forming elements 7 and a drain pipe 8, a bath 9 immersion flushing, equipped with an overflow pipe 10, a drain pipe 11 with a pump 12 and a float-type level regulator-13, as well as a collection of 14 diluted electric electrolyte (solution) of galvanochemical treatment, collector 15 of contaminated wash water, collector 16 of unpolluted demineralized (distilled) water connected by a pipeline (not indicated in Fig. 1) to the generator (accumulator) of the latter (not shown in Fig. 1), concentration unit 17 and separation of electrolyte fractions (solution), filter 18 for deep cleaning of washing water, pumps 19, 20, 21, 22 and a piping system. The outputs of the pumps 19 and 20 of the collection 14 are connected by pipelines 23 and 24 with the input of the block 17 and the bath 1, respectively.

 The first output of the block 17 is connected by a pipe 25 to the collector 14, the second input of which is connected by a pipe 2 to the bath 1, and its third entrance is connected by a pipe 5 to the bath 3.

 The output of the pump 21 of the collector 15 is connected by a pipe 26 to the elements 4 of the bath 3.

 The second output of the block 17 is connected by a pipe 27 to the collector 16, the output of the pump 22 of which is connected by a pipe 28 to the elements 7 of the bath 6, the pipe 8 of which is connected to the collector 15, the other input of which is connected by a pipe 10 to a bath 9, the pump 12 of which is connected by a pipe 29 to the input filter 18, the output of which is connected by a pipe 30 to the bath 9.

 Block 17 contains an evaporator 31, a separator 32, the first output of which is connected to the pipeline 25, and a capacitor 33 connected at the input to the separator 32, and the output of the condenser 33 is connected to the pipe 27.

 The filter 18 contains sorption or ion-exchange columns 34 with a sorbent or resin corresponding to the processing type.

 Bath 1, collectors 14, 15 and 16 are equipped with level sensors 35, 36, 37 and 38, respectively, with the corresponding number of monitored values of the latter.

 The collection 14 contains a sensor 39 of the concentration of the main washable component of the electrolyte (solution) of the galvanochemical treatment, for example.

 The device operates as follows.

 In the initial state in the bath 1 are (for example), and in the baths 3, 6 and 9 there are no workpieces (not shown).

 The level of the corresponding processing medium (for example, electrolyte and cold wash water) in baths 1 and 9, respectively, is normal.

 In collections 14 and 15, there is no diluted electrolyte (in this case) and contaminated wash water, respectively.

 The level of unpolluted demineralized (distilled) water supplied from its generator (accumulator) is normal in the collector 16 (see the drawing) (the volume of this water is sufficient for multiple jet washing processes).

 Pumps 12, 19, 20, 21, and 22 are off. The composition, concentration of the main components and other parameters of the electrolyte in the bath 1 are normal.

 The wash water (desalted or distilled) of the bath 9 does not contain any contaminants in the form of the main washable component of the bath 1 electrolyte at this initial stage of the module operation.

 After the end of the processing time of the parts in the bath 1, their unloading from the latter, the parts 3 are loaded into the bath 3, on the surface of which the electrolyte carried out by them from the bath 1 is contained. Since there is no washing water in the collection 15 (as evidenced by the signal at the output of its sensor-relay 37, the pump 21 is not turned on and the washing water is not supplied to the elements 4 of the bath 3 through the pipeline 26.

 In this case, at the initial stage of the module’s operation in the bath 3, the process of “dry” capture of the electrolyte draining from the parts, which through the pipeline 5 enters the collector 14, is carried out.

 After the end of the dry collection process (about 10-15 s), the parts are unloaded from the bath 3 and loaded into the second bath 6 of the jet washing, after which the pump 22 of the collector 16, uncontaminated, desalted, is switched on for a certain time, ensuring the appropriate quality of the jet washing distilled) water from which flows through the pipe 28 into the elements 7 of the bath 6, for washing off the main part (up to 90-95%) of the remaining electrolyte by the jet method.

 The contaminated flushing water discharged from the bath 6 through the pipeline 8 enters the collector 15, as evidenced by the signal of its sensor-relay 37.

 After the process of jet washing parts in the bath 6, parts from the latter are moved and loaded into the bath 9 for their final washing.

 In this case, the remaining amount (5-10%) of the electrolysis details of the bath 1 is removed in the bath 9 by immersion washing with vigorous stirring (for example, by sparging) of the washing water.

 After the process of washing parts by immersion in the bath 9 and unloading them from the last bath 1, 3, 6, 9 are ready for galvanochemical processing of a new batch of parts. Moreover, the feature of the subsequent processing of parts, as well as the process of maintaining the level of liquid processing media in baths 1 and 9, is as follows.

 1. After loading the second (in this case) batch of parts into the bath 3 (after their processing in the bath 1), turn on the pump 21 of the collector 15, the contaminated washing water from which flows through the pipe 26 into the elements 4 of the bath 3, thereby performing jet washing parts contaminated with washing water, reducing the concentration of electrolyte carried out by the parts into the next bath 6 jet washing and ensuring (through pipe 5) partial filling of the collector 14 with a concentrated solution of washing water, as evidenced by the output signal sensor-relay 36.

 Then, the condenser 33, the separator 32 and the evaporator 31 of the block 17 are turned on and the latter is supplied with the pump 19 (via the pipe 23) to a relatively highly concentrated part of the wash water solution, which, when heated in the evaporator 31 (vacuum, for example), is divided into two phases : liquid and gaseous, and in this form enters the separator 32. Here, the liquid concentrate is collected in the lower part of the separator 32, from the outlet of which it enters the collection tank 14 through the pipe 25, from which it is again pumped by the pump 19 to the evaporator 31 until p, until a desired concentration laundered main electrolyte component, such that the sensor 39 is fixed collector 14. The steam condensed in condenser 33 and the condensate is directed through line 27 into collector 16.

 In the event of a decrease in the electrolyte level in bath 1 at the signal of its sensor 35, the pump 26 is turned on and weakly diluted (for example) electrolyte is supplied through the pipe 24 from the collector 14 to the bath 1, while excess electrolyte from the bath 1 through the pipe 2 enters the collector 14.

2. The process of deep cleaning is performed on the slightly washed main washed component of the wash water of the bath 9. In this case, the pump 12 is turned on and the washing water is circulated along the circuit: bath 9
drain pipe 11 pump 12 pipe 29 sorption columns 34 - pipe 30 bath 9. And the replenishment of water losses of the bath 9, caused, in particular, the removal of its parts by parts, is carried out using the regulator - signaling device 13, the input of which is connected to the desalinated generator (drive) (distilled) water.

 In this case, the excess washing water generated in the bath 9 when loading parts or due to an error (accident), the regulator-signaling device 13 can flow through the pipe 10 into the collection 15.

 Moreover, during the operation of the module, it is possible to carry out operations to extract extraneous impurities of the electrolyte of the galvanochemical treatment of the bath 1 using a portable stand-alone electrochemical block (not shown in the drawing) placed in the collection 14 or directly in the bath 1.

Thus, the claimed device in comparison with the known, selected as a prototype, allows you to:
significantly simplify the design of the module by eliminating the need to use actuators and additional pipelines in its composition to separate the flows of the drained fluid, as well as control the first ones,
significantly improve the washing quality by providing the possibility of a two-stage jet washing of parts and controlling the type of washing liquid used in this case,
significantly “facilitate” the operating mode of the deep wash water filter and reduce the likelihood of “leakage” of contaminants into the wash bath by immersion.

 The implementation of the proposed device is quite simple, does not meet fundamental difficulties and can be carried out by most enterprises of instrumentation and engineering.

 So, for example, the level regulator-signaling device can be made on the basis of a standard regulator-signaling device of the type ERSU-3 or any float level regulator.

 As a pump for supplying washing water in the filter for its deep cleaning, a pump with a magnetic coupling or a metering pump of appropriate capacity and pressure can be used.

Claims (3)

 1. An in-line galvanochemical treatment module comprising a galvanochemical treatment bath with an overflow pipe, a jet wash bath with a drain pipe and with jet forming elements, an immersion wash bath with an overflow pipe, a diluted electrolyte collector connected by a pipe and a pump installed at the outlet and at the inlet of an overflow pipe with a bath for galvanochemical treatment, a contaminated water collector connected at the outlet to an overflow pipe They include washing by immersion, a unit for concentration and separation of electrolyte into fractions, closed by a pipeline 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 a jet washing and washing between immersion baths and connected through a drain piping of at least one additional jet washing bath with jet forming elements and a demineralized water collector connected by a pipeline and of the pump installed at its outlet with the elements of forming the jets of an additional jet washing bath, the deep filter of washing water is closed through a pipeline and the pump installed at its inlet with an immersion washing bath, the concentration and separation unit for electrolyte fractions is connected by its second outlet to the desalted collector water, the main jet washing bath is connected through a drain pipe to a diluted electrolyte collector, and the contaminated water outlet collector is connected through a pipeline and a pump installed at the outlet with the formation elements of the jets of the main jet washing bath.  2. The module according to claim 1, characterized in that the immersion flushing bath has a float type liquid level regulator.  3. The module according to claim 1, characterized in that the filter for deep purification of washing water is made in the form of sorption columns with a sorbent corresponding to the adsorption process of the species.