CN114354963A - Plating solution analysis system and dosing device - Google Patents

Abstract

The utility model provides a plating solution analytic system and charge device, includes small capacity automatic controllable precision syringe, large capacity automatic controllable precision syringe, first automatic controllable multi-way valve, second automatic controllable multi-way valve, multi-port diverter valve, and small capacity automatic controllable precision syringe and large capacity automatic controllable precision syringe all can be through the multi-port diverter valve, and the public channel of first automatic controllable multi-way valve and the public channel alternative of second automatic controllable multi-way valve are connected. The dosing device can make full use of the configuration of the large syringe and the small syringe, so that the large syringe and the small syringe are responsible for filling liquid medicines with respective corresponding volumes, the dosing efficiency is higher, and the automatic analysis time is shortened. Moreover, the medicine adding device can make full use of the channel quantity of the first automatic controllable multi-way valve and the second automatic controllable multi-way valve, and can automatically test more samples at one time.

Description

Plating solution analysis system and dosing device

Technical Field

The application relates to the technical field of plating solution analysis, in particular to a plating solution analysis system and a dosing device.

Background

At present, the concentration analysis of each component of the plating solution, especially the concentration analysis of the plating solution additive, is most commonly a Cyclic Voltammetry Stripping (CVS) technique, which is abbreviated as CVS technique. The technique determines the concentration of a sample by testing the response of the sample to the rate of electroplating deposition on a rotating disk electrode.

The general steps for using the CVS technique are:

1) preparing a cup (e.g., 100ml) of a supporting solution, which is typically a plating mother liquor containing no additives or a plating solution containing known concentrations of specific additives;

2) setting CVS technical parameters, and testing the electroplating deposition rate index of the supporting liquid;

3) adding a volume (e.g., 0.1ml) of sample or standard solution;

4) then testing the electroplating deposition rate index;

5) repeating the steps 3 and 4 to obtain a test curve consisting of a plurality of points;

6) and analyzing and calculating to obtain the concentration of the sample solution.

The supporting liquid and technical parameters used for the analysis of different components in the sample solution are different. When the analysis of different components is switched, the electrodes are washed by deionized water.

The key of CVS technology automatic analysis of each component concentration of plating solution lies in the automation of a dosing device, and two schemes are available on the market at present:

one solution is that of ECI Technologies; preparing a plurality of cups of supporting liquid in the step 1 and deionized water for cleaning in advance, placing the supporting liquid and the deionized water on an automatically controlled large turntable, and automatically selecting corresponding supporting liquid cups by an instrument according to the preset; the small amount of sample in the step 3 is automatically added through two precise injectors and a multi-way valve;

another solution is available from wangtong, switzerland; this solution is provided with a precision syringe for each solution to be injected.

The first scheme needs more than ten cups of supporting liquid in advance, and is relatively labor-consuming; the configuration of the corresponding supporting liquid on the software also requires the knowledge and care of the technical staff; the instrument is heavy when the large rotating disc occupies space;

the second solution requires a very large number of precision syringes, which are very expensive, to achieve automatic analysis of the multiple components of the bath.

In order to solve the above problems, the applicant's prior utility model patent CN211122649U proposes a dosing device of a plating solution analysis system, which comprises a small-capacity automatic controllable precision injector, a first automatic controllable multi-way valve, a large-capacity automatic controllable precision dosing unit and a controller; the controller is used for controlling the small-capacity automatic controllable precision injector, the first automatic controllable multi-way valve and the large-capacity automatic controllable precision dosing unit; the large-capacity automatic controllable precise dosing unit is provided with a waste liquid suction channel for sucking liquid in the electrolyte analysis container from the bottom of the electrolyte analysis container; the first automatic controllable multi-way valve is provided with a first waste liquid discharge channel extending into the waste liquid container; the first automatically controllable multi-way valve is further provided with a plurality of first liquid suction channels for sucking liquid and a plurality of first liquid discharge channels for discharging liquid sucked through the first liquid suction channels into the electrolyte analysis container; the high-capacity automatic controllable precise dosing unit is provided with a second waste liquid discharge channel which is used for extending into the waste liquid container; the large-capacity automatic controllable precise dosing unit is also provided with a plurality of second liquid suction channels for sucking liquid and a plurality of second liquid discharge channels for discharging the liquid sucked through the second liquid suction channels into the electrolyte analysis container; the small-capacity automatic controllable precision injector is connected with the first automatic controllable multi-way valve so as to realize the suction or discharge of liquid. In this charge device, owing to be equipped with first waste liquid discharge channel with the first automatic controllable multi-way valve that the automatic controllable precision syringe of small capacity cooperation was used, first liquid suction channel and first liquid discharge channel, so, when needing to be changed the injection liquid, the liquid that the automatic controllable precision syringe of small capacity was retained through first waste liquid discharge channel is discharged the waste liquid container earlier, then the automatic controllable precision syringe of small capacity is rinsed through first liquid suction channel suction washing liquid, arrange the waste liquid container through first waste liquid discharge channel with washing liquid after accomplishing the washing, the automatic controllable precision syringe of small capacity rethread first liquid suction channel suction another kind of liquid pours into the electrolyte analysis container through first liquid discharge channel into. The same is true for a large-capacity automatic controllable precise dosing unit. Then, one syringe can complete the injection of multiple fluids in one test or while supporting fluids are being dispensed. The liquid injection in the analysis process can be completed by using a small-capacity automatic controllable precision injector and a large-capacity automatic controllable precision dosing unit, so that the use of excessive precision injectors can be avoided, and the automatic preparation of supporting liquid can be realized simultaneously, thereby realizing the miniaturization and the complete automation of the dosing device.

However, the chemical adding device of the plating solution analysis system of the utility model still has the following disadvantages:

for example, the volume of the small-volume precision syringe is usually selected according to the amount of the plating solution sample to be added, and when the analysis is performed on the plating solution sample as well as the brightener and the copper chloride, the small-volume precision syringe is usually required to inject a larger amount of the liquid medicines such as the brightener than the plating solution sample, that is, the small-volume precision syringe is required to be both responsible for the injection of the liquid medicine smaller than the volume and responsible for the injection of the liquid medicine larger than the volume. When a liquid medicine larger than the volume of the liquid medicine is injected, a small-volume syringe is required to perform multiple injections, so that the working efficiency is reduced, and the analysis time is increased.

For another example, a plating solution sample is added into the analysis container through the small-capacity precision injector and the first automatically controllable multi-way valve, and when the multi-system liquid medicine is analyzed, because the amount of the optical agent standard sample is correspondingly increased, the optical agent standard sample needs to occupy the corresponding valve port of the first automatically controllable multi-way valve, so that the valve port of the first automatically controllable multi-way valve, which can be used for placing the sample, is occupied, and the number of samples which can be analyzed when the multi-system liquid medicine is analyzed is reduced as a result.

For another example, the number of samples/reagents to be analyzed and the number of types of supporting fluids required per automated test may often be different, while the number of channels for each of the first automatically controllable multi-way valve used with the small syringe and the second automatically controllable multi-way valve used with the large syringe is fixed. When the first automatically controllable multi-way valve and the second automatically controllable multi-way valve use the same multi-way valve, i.e. the number of channels of the two multi-way valves is the same (for example, the number of channels of the first automatically controllable multi-way valve and the second automatically controllable multi-way valve are both 8), and the number of samples to be analyzed is large, the following situations may exist: the number of channels which can be provided by the first automatic controllable multi-way valve which is matched with the small-capacity precision injector and is responsible for adding the samples/medicaments cannot meet the test requirement of more samples, while the number of channels which can be provided by the second automatic controllable multi-way valve which is matched with the large-capacity precision injector and is responsible for adding the supporting liquid (electroplating mother liquid) exceeds the type number of the supporting liquid which is required to be used, so that the channels of the two multi-way valves cannot be fully utilized in the automatic test, and the number of the samples which can be automatically tested at one time is completely limited by the number of the channels of the first automatic controllable multi-way valve.

It is to be noted that the information disclosed in the above background section is only for understanding the background of the present application and thus may include information that does not constitute prior art known to a person of ordinary skill in the art.

Disclosure of Invention

The main purpose of the present invention is to overcome the above-mentioned drawbacks of the background art, and to provide a plating solution analysis system and a dosing device.

The utility model provides a plating solution analytic system's charge device, including the automatic controllable precision syringe of small capacity, the automatic controllable precision syringe of large capacity, and with the automatic controllable precision syringe of small capacity with the automatic controllable precision syringe of large capacity cooperates first automatic controllable multi-way valve and the automatic controllable multi-way valve of second and uses, still includes the multi-port diverter valve, the multi-port diverter valve with the automatic controllable precision syringe of small capacity the automatic controllable precision syringe of large capacity first automatic controllable multi-way valve with the automatic controllable multi-way valve of second links to each other, makes the automatic controllable precision syringe of small capacity with the automatic controllable precision syringe of large capacity all can pass through the multi-port diverter valve, with the common channel of first automatic controllable multi-way valve with the alternative connection of common channel of the automatic controllable multi-way valve of second.

Further:

the multi-port switching valve is a 4-port switching valve.

The small-capacity automatic controllable precision injector is a controllable precision injector with the capacity of 0.1-5 ml, and the large-capacity automatic controllable precision injector is a controllable precision injector with the capacity of 5-100 ml.

The multi-port switching valve is an electric switching valve.

The first automatically controllable multi-way valve is provided with: a plurality of first liquid suction channels for sucking liquid and a plurality of first liquid discharge channels for discharging liquid into the electrolyte analysis container; a first waste liquid discharge passage for extending into the waste liquid container.

The second automatic controllable multi-way valve is provided with: a plurality of second liquid suction passages for sucking liquid and a plurality of second liquid discharge passages for discharging liquid into the electrolyte analysis container; a first waste liquid suction passage for sucking liquid in the electrolyte analysis container from a bottom of the electrolyte analysis container and a second waste liquid discharge passage for protruding into the waste liquid container.

A plurality of peristaltic pumps are also included; one side channel of the peristaltic pump is used as a second waste liquid suction channel, and the other side channel is used as a third waste liquid discharge channel; the other side channels of the peristaltic pumps are used as a third liquid suction channel, and the other side channel of the peristaltic pumps is used as a third liquid discharge channel; the second automatic controllable multi-way valve is provided with: a plurality of second liquid suction passages for sucking liquid and a plurality of second liquid discharge passages for discharging liquid into the electrolyte analysis container.

The number of the channels of the first automatic controllable multi-way valve is more than 6; the number of the channels of the second automatic controllable multi-way valve is more than 6.

The automatic controllable precision injector comprises a small-capacity automatic controllable precision injector, a large-capacity automatic controllable precision injector, a first automatic controllable multi-way valve, a second automatic controllable multi-way valve and a multi-port switching valve.

A plating solution analysis system comprises the dosing device.

Compared with the prior art, the invention has the beneficial effects that:

the dosing device comprises a small-capacity automatic controllable precision injector, a large-capacity automatic controllable precision injector, a first automatic controllable multi-way valve and a second automatic controllable multi-way valve, and is also provided with a multi-port switching valve connected with the small-capacity automatic controllable precision injector, the large-capacity automatic controllable precision injector, the first automatic controllable multi-way valve and the second automatic controllable multi-way valve, wherein the small-capacity automatic controllable precision injector and the large-capacity automatic controllable precision injector can be alternatively connected with a common channel of the first automatic controllable multi-way valve and a common channel of the second automatic controllable multi-way valve through the multi-port switching valve; therefore, the invention can fully utilize the configuration of the large syringe and the small syringe, so that the large syringe and the small syringe are responsible for filling liquid medicine with respective corresponding volumes, the time is saved, the medicine adding efficiency is higher, and the automatic analysis time is shortened, for example, when the analysis of brightener, copper acid chloride and the like is carried out in addition to the analysis of the plating solution sample, after the plating solution sample with the volume less than the volume is injected by the small-volume precise syringe, the small-volume precise syringe can be switched into the large-volume precise syringe through the multi-port switching valve to be connected with the first automatic controllable multi-way valve, the large-volume precise syringe is used for injecting the liquid medicine with the volume more than the small-volume precise syringe, the small-volume syringe is only responsible for injecting the liquid medicine with the volume not more than the volume, the liquid adding efficiency is higher, the situation that the small-volume syringe is used for injecting for a plurality of times when one liquid medicine is added is avoided, so that the working efficiency is improved, the automatic analysis time is shortened; in addition, the invention can make full use of the channel number of the first automatic controllable multi-way valve and the second automatic controllable multi-way valve, and can arrange to automatically test more samples at one time; for example, when a multi-system liquid medicine analysis is performed, a light agent standard sample occupies a channel of a first automatic controllable multi-way valve, if the number of channels of a second automatic controllable multi-way valve exceeds the number of types of supporting liquid needed, one or more channels for placing the sample can be provided by the second automatic controllable multi-way valve, and the second automatic controllable multi-way valve is switched into a small-capacity precision injector through a multi-port switching valve to be connected with the second automatic controllable multi-way valve, so that the plating solution sample provided by the second automatic controllable multi-way valve is injected, and therefore, the number of the automatically tested samples can be arranged at one time to break through the limit of the number of the channels of the first automatic controllable multi-way valve, and more samples can be automatically tested at one time.

Drawings

FIG. 1 is a schematic view showing the structure of a plating solution analyzing system according to a first embodiment of the prior art;

FIG. 2 is a schematic structural view showing a modification of the plating solution analyzing system according to the first embodiment of the prior art;

FIG. 3 is a schematic configuration diagram of another modification of the plating solution analyzing system according to the first embodiment of the prior art;

FIG. 4 is a schematic diagram of a plating solution analysis system according to a second embodiment of the prior art.

Fig. 5 is a schematic structural diagram of a plating solution analysis system according to an embodiment of the present application.

FIG. 6 is a schematic diagram of a plating solution analysis system using a peristaltic pump according to another embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the embodiments of the present application more clearly apparent, the present application is further described in detail below with reference to fig. 1 to 5 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. The connection may be for fixation or for circuit connection.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description of the embodiments and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

The following is the disclosure of the applicant's prior utility model patent CN211122649U, which is incorporated in the present application and is referred to hereinafter as an example of the present application.

First embodiment

Referring to fig. 1, the present embodiment provides a plating solution analysis system. The plating solution analysis system comprises a dosing device 100, a potentiostat 200, a computer 300, an electrolyte analysis container 400, a waste liquid container 500, a plurality of electrodes 600, and a plurality of liquid containers 700.

A plurality of electrodes 600 are located in electrolyte analysis container 400 and may be connected to potentiostat 200. Computer 300 may be a personal computer, and may process data transmitted from potentiostat 200.

Waste container 500 is used to contain waste.

The liquid contained in each liquid container 700 includes one of a plating solution sample, a brightener, a standard sample, a plating mother liquor, deionized water, a chloride ion titration reagent, an acid titration reagent, a wetting agent, and a copper titration reagent.

Referring to fig. 1, the drug administration device 100 of the present embodiment includes a first automatically controllable multi-way valve 1, a small-capacity automatically controllable precision syringe 2, a large-capacity automatically controllable precision drug administration unit 3, and a controller 4.

The controller 4 is used for controlling the first automatic controllable multi-way valve 1, the small-capacity automatic controllable precision injector 2 and the large-capacity automatic controllable precision dosing unit 3.

The large-capacity automatic controllable precision medicine adding unit 3 is provided with a waste liquid suction channel 800 which sucks the liquid in the electrolyte analysis container 400 from the bottom of the electrolyte analysis container 400. Illustratively, the waste fluid suction channel 800 extends into the bottom of the electrolyte analysis container 400 for draining the analyzed solution or cleaning solution in the electrolyte analysis container 400.

The first automatically controllable multi-way valve 1 is provided with a first waste liquid discharge channel 11 for extending into the waste liquid container 500.

The first automatically controllable multi-way valve 1 is further provided with a plurality of first liquid suction channels 12 for sucking liquid and a plurality of first liquid discharge channels 13 for discharging liquid sucked through the first liquid suction channels 12 into the electrolyte analysis container 400. Wherein the first liquid pumping channel 12 is used for pumping liquid from the liquid container 700. The controller 4 controls the two driving mechanisms comprising the motor M to enable the first automatic controllable multi-way valve 1 and the small-capacity automatic controllable precision injector 2 to work, so that liquid suction and liquid discharge are realized.

In the present embodiment, the number of the channels of the first automatically controllable multi-way valve 1 is eight, that is, the total number of the first waste liquid discharge channel 11, the first liquid suction channel 12 and the first liquid discharge channel 13 is eight, which can satisfy the basic use of the plating solution analysis system; referring to fig. 2 and 3, in other embodiments the number of channels of the first automatically controllable multi-way valve 1 is nine or more than ten.

Referring to fig. 1, the large-capacity automatic controllable precision medicine adding unit 3 is provided with a second waste liquid discharge channel 31 for extending into a waste liquid container 500.

The large-capacity automatically controllable precision-adding medicine unit 3 is also provided with a plurality of second liquid suction passages 32 for sucking liquid and a plurality of second liquid discharge passages 33 for discharging the liquid sucked through the second liquid suction passages 32 into the electrolyte analysis container 400. The second liquid suction passage 32 is used to suck liquid from the liquid container 700.

A small-capacity automatically controllable precision syringe 2 is connected to the first automatically controllable multi-way valve 1 so as to enable suction or discharge of liquid. The small-capacity automatic controllable precision injector 2 is specifically a micro piston injection pump; illustratively, the small-capacity automatic controllable precision syringe 2 has a capacity of 0.05ml to 5 ml; wherein the precision of the small-capacity automatic controllable precision injector 2 is greater than or equal to 99%, preferably greater than or equal to 99.5%.

Referring to fig. 1, the controller 4 activates the large-capacity automatic controllable precision medicine-adding unit 3 to suck liquid from one liquid container 700 through one second liquid suction passage 32 and then discharge the sucked liquid into the electrolyte analysis container 400 through the corresponding second liquid discharge passage 33; the excess liquid is discharged to the waste liquid container 500 through the second waste liquid discharge channel 31. The controller 4 starts the small-capacity automatic controllable precision syringe 2 to suck liquid from a liquid container 700 through one first liquid suction channel 12 of the first automatic controllable multi-way valve 1 and then to discharge the liquid into the electrolyte analysis container 400 through the corresponding first liquid discharge channel 13; the excess liquid in the small-capacity automatic controllable precision syringe 2 is discharged into the waste liquid container 500 through the first waste liquid discharge channel 11, and the small-capacity automatic controllable precision syringe 2 is cleaned by sucking the liquid for cleaning from a liquid container 700 through a first liquid suction channel 12, and the liquid resulting from the cleaning is discharged into the waste liquid container 500 through the first waste liquid discharge channel 11 after the cleaning is completed. Potentiostat 200 analyzes the liquid in electrolyte analysis vessel 400 through a plurality of electrodes 600. After completion of the analysis, the large-capacity automatic controllable precision medicine adding unit 3 sucks the analyzed liquid from the electrolyte analysis container 400 through the waste liquid suction channel 800 and discharges it into the waste liquid container 500 through the second waste liquid discharge channel 31. The large-capacity automatic controllable precise dosing unit 3 sucks liquid from one liquid container 700 and discharges the liquid into the electrolyte analysis container 400, and the redundant liquid is discharged into the waste liquid container 500; the small-capacity automatic controllable precision syringe 2 sucks liquid from one liquid container 700 through the first automatic controllable multi-way valve 1 and discharges the liquid into the electrolyte analysis container 400, and the excess liquid is discharged into the waste liquid container 500; and then analyzed. The reciprocating operation can realize automatic medicine feeding. Therefore, in the embodiment, automatic dosing can be realized through the first automatic controllable multi-way valve 1, the small-capacity automatic controllable precision injector 2 and the large-capacity automatic controllable precision dosing unit 3, the structure is simplified, and the cost can be reduced; the automatic preparation of the supporting liquid can be realized, and the automation degree can be improved.

Referring to fig. 1, the large-capacity automatic controllable precision medicine adding unit 3 of the present embodiment includes a second automatic controllable multi-way valve 3A and a large-capacity automatic controllable precision injector 3B. The second automatically controllable multi-way valve 3A is provided with the aforementioned waste liquid suction channel 800, the aforementioned second waste liquid discharge channel 31, a plurality of the aforementioned second liquid suction channels 32, and a plurality of the aforementioned second liquid discharge channels 33. The large-capacity automatic controllable precision injector 3B is connected with the second automatic controllable multi-way valve 3A to realize suction or discharge of liquid. The high-capacity automatic controllable precision injector 3B is a micro piston injection pump; illustratively, the capacity of the large-capacity automatic controllable precision injector 3B is 5ml to 100 ml; the precision of the large-capacity automatic controllable precision injector 3B is greater than or equal to 98 percent, preferably greater than or equal to 99 percent; wherein, the capacity of the large-capacity automatic controllable precision injector 3B is larger than that of the small-capacity automatic controllable precision injector 2, for example, the former is two times, three times, four times or more than five times larger than that of the latter. The controller 4 controls the two driving mechanisms comprising the motor M to enable the second automatic controllable multi-way valve 3A and the large-capacity automatic controllable precision injector 3B to work, so that liquid suction and liquid discharge are realized.

In the present embodiment, the number of the second automatically controllable multi-way valve 3A is six, that is, the total number of the waste liquid suction channel 800, the second waste liquid discharge channel 31, the second liquid suction channel 32 and the second liquid discharge channel 33 is six, which can satisfy the basic use of the plating solution analysis system; referring to fig. 2 and 3, in other embodiments, the number of channels of the second automatically controllable multi-way valve 3A is seven or more than eight.

With reference to fig. 1, the first automatically controllable multi-way valve 1 of the present embodiment is provided with a first switching channel 14. The first switching channel 14 is a common channel. One end of the first switching channel 14 is connected with the small-capacity automatic controllable precision injector 2. The other end of the first switching channel 14 may be connected to the first waste liquid discharge channel 11, the first liquid suction channel 12, or the first liquid discharge channel 13. For example, the first switching channel 14 connects the small-capacity automatic controllable precision syringe 2 to a first liquid suction channel 12, and the small-capacity automatic controllable precision syringe 2 can suck the liquid in a certain liquid container 700; one end of the first switching channel 14 is kept connected to the small-capacity automatic controllable precision syringe 2, and the other end is switched by rotation to be connected to a first liquid discharge channel 13, so that the small-capacity automatic controllable precision syringe 2 can discharge the previously aspirated liquid into the electrolyte analysis container 400.

The second automatically controllable multi-way valve 3A of the present embodiment is provided with a second switching channel 34. One end of the second switching channel 34 is connected with the large-capacity automatic controllable precision injector 3B. The other end of the second switching channel 34 may be connected to the waste liquid suction channel 800, the second waste liquid discharge channel 31, the second liquid suction channel 32, or the second liquid discharge channel 33. Illustratively, the second switching passage 34 connects the large-capacity automatic controllable precision syringe 3B with one second liquid suction passage 32, and the large-capacity automatic controllable precision syringe 3B can suck the liquid in a certain liquid container 700; one end of the second switching channel 34 is kept connected to the large-capacity automatic controllable precision syringe 3B, and the other end is switched by rotation to be connected to a second liquid discharge channel 33, so that the large-capacity automatic controllable precision syringe 3B can discharge the previously aspirated liquid into the electrolyte analysis container 400.

The first waste liquid discharge channel 11, the first liquid suction channel 12, and the first liquid discharge channel 13 of the present embodiment may be channels provided on the valve body of the first automatically controllable multi-way valve 1, or may be pipes, such as hoses, to which the first automatically controllable multi-way valve 1 is connected to a container, such as the electrolyte analysis container 400, the waste liquid container 500, or the liquid container 700.

The waste liquid suction channel 800, the second waste liquid discharge channel 31, the second liquid suction channel 32, and the second liquid discharge channel 33 of the present embodiment may be channels provided on a valve body of the second automatically controllable multi-way valve 3A, or may be pipes such as hoses through which the second automatically controllable multi-way valve 3A is connected to a container such as the electrolyte analysis container 400, the waste liquid container 500, or the liquid container 700.

Second embodiment

Referring to fig. 4, the present embodiment is different from the first embodiment in that: the high-capacity automatic controllable precision dosing unit 3 of the first embodiment comprises a second automatic controllable multi-way valve 3A and a high-capacity automatic controllable precision injector 3B; the high-capacity automatic controllable precision medicine adding unit 3 of the embodiment comprises three peristaltic pumps. Referring to fig. 4, one side channel of a peristaltic pump serves as the second waste liquid discharge channel 31, and the other side channel serves as the waste liquid suction channel 800.

One side passage of the other two peristaltic pumps serves as a second liquid suction passage 32, and the other side passage serves as a second liquid discharge passage 33.

The controller 4 controls three driving mechanisms comprising motors to respectively enable the three peristaltic pumps to work so as to realize liquid suction and liquid discharge.

In this embodiment, the peristaltic pump has a maximum flow rate of no greater than 300 ml/min and dispenses the second liquid to an accuracy of 98% or greater.

In other embodiments, the number of peristaltic pumps is four, five, or more than six.

The peristaltic pump can meet the precision requirement of a plating solution dosing analysis system, and is low in cost and high in efficiency.

In the embodiment, the first automatically controllable multi-way valve 1 used in cooperation with the small-capacity automatically controllable precision injector 2 is provided with a first waste liquid discharge channel 11, a first liquid suction channel 12 and a first liquid discharge channel 13, so that when the injection liquid needs to be replaced, the liquid retained in the small-capacity automatically controllable precision injector 2 is discharged to the waste liquid container 500 through the first waste liquid discharge channel 11, then the small-capacity automatically controllable precision injector 2 sucks the cleaning liquid through the first liquid suction channel 12 for cleaning, after the cleaning is completed, the cleaning liquid is discharged to the waste liquid container 500 through the first waste liquid discharge channel 11, and the small-capacity automatically controllable precision injector 2 sucks another liquid through the first liquid suction channel 12 and injects the another liquid into the electrolyte analysis container 400 through the first liquid discharge channel 13. The same is true for the large-capacity automatically controllable precision dosing unit 3. Then, one syringe can complete the injection of multiple fluids in one test or while supporting fluids are being dispensed. The liquid injection in the analysis process can be completed by using one small-capacity automatic controllable precision injector 2 and one large-capacity automatic controllable precision dosing unit 3 or can be completed by using two precision injectors, so that the use of excessive precision injectors can be avoided, and the automatic preparation of supporting liquid can be realized simultaneously, thereby realizing the miniaturization and more complete automation of the dosing device.

The difficulty of automatic preparation of the supporting liquid is that the maximum volume of the current common precision syringe is 5ml, and if 100ml of supporting liquid is injected, the time is required to be several minutes. In order to reduce the time, the embodiment reduces the amount of the supporting liquid in the container to 50ml, and adopts a customized 10ml precision syringe, thereby shortening the time required before to one fourth; i.e., to reduce the gap between the capacity of the small-capacity automatic controllable precision syringe 2 and the capacity of the large-capacity automatic controllable precision syringe 3B.

The embodiments of the present application

Referring to fig. 5, an embodiment of the present application provides a dosing device for a plating solution analysis system, including a small-capacity automatic controllable precision injector, a large-capacity automatic controllable precision injector, and a first automatic controllable multi-way valve and a second automatic controllable multi-way valve used in cooperation with the small-capacity automatic controllable precision injector and the large-capacity automatic controllable precision injector, and further including a multi-port switching valve, the multi-port switching valve is connected with the small-capacity automatic controllable precision injector, the large-capacity automatic controllable precision injector, the first automatic controllable multi-way valve and the second automatic controllable multi-way valve, so that the small-capacity automatic controllable precision injector and the large-capacity automatic controllable precision injector can both pass through the multi-port switching valve, and is selectively connected with the common channel of the first automatic controllable multi-way valve and the common channel of the second automatic controllable multi-way valve. Therefore, by means of the multi-port switching valve, the small-capacity automatic controllable precision injector and the large-capacity automatic controllable precision injector can be communicated with any working valve port channel of the first automatic controllable multi-port valve and the second automatic controllable multi-port valve, and liquid suction and discharge on the corresponding channels are achieved.

In some more specific embodiments, reference may be made to the first and second embodiments disclosed in CN211122649U and fig. 1 to 4 for specific configurations of the small-capacity automatic controllable precision injector, the large-capacity automatic controllable precision injector, the first automatic controllable multi-way valve, and the second automatic controllable multi-way valve, and configurations of various related channels thereof, and configurations of a peristaltic pump, which are not described herein in detail.

Referring to fig. 5, in some embodiments, the multi-port switching valve is a 4-port switching valve, preferably an electrically operated switching valve.

In a preferred embodiment, the number of channels of the first automatically controllable multi-way valve is more than 6; the number of the channels of the second automatic controllable multi-way valve is more than 6.

With reference to fig. 5, in one embodiment, the first automatically controllable multi-way valve is provided with: a plurality of first liquid suction channels for sucking liquid and a plurality of first liquid discharge channels for discharging liquid into the electrolyte analysis container; a first waste liquid discharge passage for extending into the waste liquid container.

With reference to fig. 5, in one embodiment, the second automatically controllable multi-way valve is provided with: a plurality of second liquid suction passages for sucking liquid and a plurality of second liquid discharge passages for discharging liquid into the electrolyte analysis container; a first waste liquid suction passage for sucking liquid in the electrolyte analysis container from a bottom of the electrolyte analysis container and a second waste liquid discharge passage for protruding into the waste liquid container. This embodiment may be free of peristaltic pumps.

Referring to fig. 6, in another embodiment, a plurality of peristaltic pumps (3 shown in fig. 6) are also included; one side channel of the peristaltic pump is used as a second waste liquid suction channel, and the other side channel is used as a third waste liquid discharge channel; the other side channels of the peristaltic pumps are used as a third liquid suction channel, and the other side channel of the peristaltic pumps is used as a third liquid discharge channel; and the second automatically controllable multi-way valve is provided with: a plurality of second liquid suction passages for sucking liquid and a plurality of second liquid discharge passages for discharging liquid into the electrolyte analysis container. In contrast to the previous embodiment, when the system comprises a peristaltic pump, one peristaltic pump is responsible for drawing the waste fluid from the analysis container to the waste fluid container, without the need to provide a large syringe with a channel for drawing the waste fluid from the analysis container. In addition, the rest peristaltic pumps can be used for adding deionized water to clean the analysis container and the like. Because the precision of the peristaltic pump is lower than that of the injection pump, but the efficiency is higher than that of the injection pump, and the precision of extracting waste liquid and adding deionized water to wash the analysis container is not high, the peristaltic pump is adopted to replace at least the part of a large injector, so that the working efficiency is improved. At the same time, the cost of the system is increased little by adding the peristaltic pump.

Referring to fig. 5, the difference between the apparatus and the first and second embodiments disclosed in CN211122649U is that, in addition to the apparatus including a small-capacity automatic controllable precision injector, a large-capacity automatic controllable precision injector, a first automatic controllable multi-way valve and a second automatic controllable multi-way valve, the apparatus according to the embodiments of the present invention is further provided with a multi-port switching valve connected to the small-capacity automatic controllable precision injector, the large-capacity automatic controllable precision injector, the first automatic controllable multi-way valve and the second automatic controllable multi-way valve, and both the small-capacity automatic controllable precision injector and the large-capacity automatic controllable precision injector can be alternatively connected to a common channel of the first automatic controllable multi-way valve and a common channel of the second automatic controllable multi-way valve through the multi-port switching valve; therefore, the invention can fully utilize the configuration of the large syringe and the small syringe, so that the large syringe and the small syringe are responsible for filling liquid medicine with respective corresponding volumes, the time is saved, the medicine adding efficiency is higher, and the automatic analysis time is shortened, for example, when the analysis of brightener, copper acid chloride and the like is carried out in addition to the analysis of the plating solution sample, after the plating solution sample with the volume less than the volume is injected by the small-volume precise syringe, the small-volume precise syringe can be switched into the large-volume precise syringe through the multi-port switching valve to be connected with the first automatic controllable multi-way valve, the large-volume precise syringe is used for injecting the liquid medicine with the volume more than the small-volume precise syringe, the small-volume syringe is only responsible for injecting the liquid medicine with the volume not more than the volume, the liquid adding efficiency is higher, the situation that the small-volume syringe is used for injecting for a plurality of times when one liquid medicine is added is avoided, so that the working efficiency is improved, the automatic analysis time is shortened; in addition, the invention can make full use of the channel number of the first automatic controllable multi-way valve and the second automatic controllable multi-way valve, and can arrange to automatically test more samples at one time; for example, when a multi-system liquid medicine analysis is performed, a light agent standard sample occupies a channel of a first automatic controllable multi-way valve, if the number of channels of a second automatic controllable multi-way valve exceeds the number of types of supporting liquid needed, one or more channels for placing the sample can be provided by the second automatic controllable multi-way valve, and the second automatic controllable multi-way valve is switched into a small-capacity precision injector through a multi-port switching valve to be connected with the second automatic controllable multi-way valve, so that the plating solution sample provided by the second automatic controllable multi-way valve is injected, and therefore, the number of the automatically tested samples can be arranged at one time to break through the limit of the number of the channels of the first automatic controllable multi-way valve, and more samples can be automatically tested at one time.

The foregoing is a further detailed description of the present application in connection with specific/preferred embodiments and is not intended to limit the present application to that particular description. For a person skilled in the art to which the present application pertains, several alternatives or modifications to the described embodiments may be made without departing from the concept of the present application, and these alternatives or modifications should be considered as falling within the scope of the present application.

Claims (10)

1. A dosing device of a plating solution analysis system comprises a small-capacity automatic controllable precision injector, a large-capacity automatic controllable precision injector, a first automatic controllable multi-way valve and a second automatic controllable multi-way valve which are matched with the small-capacity automatic controllable precision injector and the large-capacity automatic controllable precision injector, it is characterized by also comprising a multi-port switching valve, wherein the multi-port switching valve is connected with the small-capacity automatic controllable precision injector, the large-capacity automatic controllable precision injector, the first automatic controllable multi-way valve and the second automatic controllable multi-way valve, so that the small-capacity automatic controllable precision injector and the large-capacity automatic controllable precision injector can both pass through the multi-port switching valve, and is selectively connected with the common channel of the first automatic controllable multi-way valve and the common channel of the second automatic controllable multi-way valve.

2. The dosing apparatus for a plating solution analysis system according to claim 1, wherein the multi-port switching valve is a 4-port switching valve.

3. The dosing device for a plating solution analysis system according to claim 1 or 2, wherein the small-capacity automatic controllable precision injector is a controllable precision injector with a capacity of 0.1ml to 5ml, and the large-capacity automatic controllable precision injector is a controllable precision injector with a capacity of 5ml to 100 ml.

4. The dosing device of a plating solution analysis system according to claim 1 or 2, wherein the multi-port switching valve is an electric switching valve.

5. The dosing device of a plating solution analysis system according to claim 1 or 2, wherein the first automatically controllable multi-way valve is provided with: a plurality of first liquid suction channels for sucking liquid and a plurality of first liquid discharge channels for discharging liquid into the electrolyte analysis container; a first waste liquid discharge passage for extending into the waste liquid container.

6. The dosing device of a plating solution analysis system according to claim 1 or 2, wherein the second automatically controllable multi-way valve is provided with: a plurality of second liquid suction passages for sucking liquid and a plurality of second liquid discharge passages for discharging liquid into the electrolyte analysis container; a first waste liquid suction passage for sucking liquid in the electrolyte analysis container from a bottom of the electrolyte analysis container and a second waste liquid discharge passage for protruding into the waste liquid container.

7. The medicated device of claim 1 or 2, wherein: a plurality of peristaltic pumps are also included; one side channel of the peristaltic pump is used as a second waste liquid suction channel, and the other side channel is used as a third waste liquid discharge channel; the other side channels of the peristaltic pumps are used as a third liquid suction channel, and the other side channel of the peristaltic pumps is used as a third liquid discharge channel;

the second automatic controllable multi-way valve is provided with: a plurality of second liquid suction passages for sucking liquid and a plurality of second liquid discharge passages for discharging liquid into the electrolyte analysis container.

8. The medicated device of claim 1 or 2, wherein: the number of the channels of the first automatic controllable multi-way valve is more than 6; the number of the channels of the second automatic controllable multi-way valve is more than 6.

9. The medicated device of claim 1 or 2, wherein: the automatic controllable precision injector comprises a small-capacity automatic controllable precision injector, a large-capacity automatic controllable precision injector, a first automatic controllable multi-way valve, a second automatic controllable multi-way valve and a multi-port switching valve.

10. A plating solution analysis system is characterized in that: comprising a medicated device according to any of claims 1 to 9.

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