CN115025701A

CN115025701A - Liquid preparation device and method with cleaning function and analyzer system

Info

Publication number: CN115025701A
Application number: CN202210577068.0A
Authority: CN
Inventors: 谢归
Original assignee: Maccura Medical Electronics Co Ltd
Current assignee: Maccura Medical Electronics Co Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2022-09-09
Also published as: CN110026118A

Abstract

The invention discloses a liquid preparation device with a cleaning function, which comprises a pure water assembly, a concentrated liquid assembly and a liquid preparation assembly, wherein an outlet of the concentrated liquid assembly and an outlet of the pure water assembly are connected to an inlet of a first pump body through a valve body assembly; the first pump body is connected with the valve body assembly through a signal; the controller is used for controlling the passage of the valve body assembly for communicating the concentrated solution assembly with the first pump body, and controlling the valve body assembly to conduct the passage of the pure water assembly and the solution distribution assembly after the valve body assembly stops supplying the concentrated solution to the first pump body, so that the pure water assembly supplies the pure water to the passage of the first pump body to the solution distribution assembly. This application realizes washing, the purpose of diluting first pump body and follow-up pipeline, and the cost of whole device is lower, and occupation of land is less. The application also discloses a liquid preparation method with a cleaning function and an analyzer system comprising the liquid preparation device with the cleaning function.

Description

Liquid preparation device and method with cleaning function and analyzer system

The application is a divisional application of the following parent cases:

the parent application date is 2019.05.21, the Chinese application number is 201910423969.2, and the name is analyzer system, liquid preparation device with cleaning function and method.

Technical Field

The invention relates to the technical field of sample analysis instruments, in particular to a liquid preparation device with a cleaning function and a liquid preparation method. In addition, the invention also relates to an analyzer system comprising the liquid preparation device with the cleaning function.

Background

Sample analyzers have become the primary devices for clinical immunodiagnosis today. The existing cleaning liquid preparation device has a complex structure, the condition that the proportion of the prepared cleaning liquid is not accurate exists, and the cleaning liquid with unqualified concentration is wasted in a large quantity, so that the resource waste is caused.

The main reason for the inaccurate ratio is that in the cleaning liquid preparation device, two assemblies for supplying pure water and concentrated liquid respectively supply the liquids to the liquid preparation vessel through a power mechanism, a control mechanism and the like, for example, a peristaltic pump is used to pump the concentrated liquid, a diaphragm pump is used to pump the pure water and the pure water is mixed in the liquid preparation vessel to achieve the desired mixing ratio.

However, since the concentrated liquid is filled between the concentrated liquid source and the plunger pump connected to the middle of the liquid preparation vessel, the pump body in the path of the liquid preparation vessel and the conveying pipeline, crystals are easily formed after being influenced by the environment, so that a pump valve and the pipeline are blocked, the precision control in the subsequent liquid preparation process is influenced, and the precision of the liquid preparation finally exceeds the error range.

In summary, how to provide a liquid dispensing device that avoids a large error in liquid dispensing accuracy is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

In view of this, the present invention provides a liquid dispensing device and a liquid dispensing method with a cleaning function, which can ensure that no concentrated liquid remains in a pump valve and a pipeline after a cleaning liquid is dispensed, and no crystals are generated, thereby avoiding the influence on precision in subsequent use.

Another object of the present invention is to provide an analyzer system comprising the above liquid dispensing apparatus with cleaning function.

In order to achieve the above purpose, the invention provides the following technical scheme:

a liquid preparation device with a cleaning function comprises a pure water assembly, a concentrated liquid assembly and a liquid preparation assembly, wherein an outlet of the concentrated liquid assembly and an outlet of the pure water assembly are connected to an inlet of a first pump body through a valve body assembly, and an outlet of the first pump body is connected with the liquid preparation assembly;

the pure water component comprises a second pump body, and an outlet of the second pump body is connected with an inlet of the first pump body through a valve body component;

the valve body assembly is connected with the first pump body, the second pump body and the valve body assembly through signals;

the first pump body divides the total required amount of the concentrated solution into N times, the concentrated solution is supplied to the solution preparation assembly by the concentrated solution assembly, the controller controls the passage of the valve body assembly for communicating the concentrated solution assembly with the first pump body so that the concentrated solution assembly extracts a preset amount of concentrated solution from the first pump body, after the first pump body is controlled to extract the preset amount of concentrated solution, the valve body assembly is controlled to communicate the passage of the pure water assembly with the solution preparation assembly, the second pump body is controlled so that the pure water in the pure water assembly brings the concentrated solution in the first pump body into the solution preparation assembly, and the first pump body is controlled to reset during the period that the concentrated solution and the pure water are injected into the solution preparation assembly; the first pump body is a plunger pump. .

Preferably, after the first pump body is controlled to finish the extraction of the predetermined amount of concentrated liquid, the valve body assembly is controlled to conduct the passage between the pure water assembly and the liquid distribution assembly, and the first pump body is controlled to reset.

Preferably, the first pump body is controlled to reset after the second pump body is controlled to enable pure water in the pure water component to bring concentrated liquid in the first pump body into the liquid preparation component for a certain time.

Preferably, the valve body assembly comprises a switching three-way electromagnetic valve, two ends of the switching three-way electromagnetic valve are respectively and correspondingly connected to an outlet of the concentrated solution assembly and an outlet of the pure water assembly to obtain the concentrated solution and the pure water, and the other end of the switching three-way electromagnetic valve is connected to an inlet of the first pump body to convey the concentrated solution or the pure water to the first pump body;

the controller is used for controlling the switching three-way electromagnetic valve to feed liquid from the outlet of the concentrated solution component or the outlet of the pure water component and discharge the liquid to the first pump body.

Preferably, the valve body assembly comprises a three-way valve set, a front end electromagnetic valve and a first Y-shaped three-way;

an inlet of the front-end electromagnetic valve is connected with an outlet of the concentrated solution assembly, an outlet of the front-end electromagnetic valve is connected with a first end of the first Y-shaped tee joint, three ends of the tee joint valve group are respectively connected with an outlet of the pure water assembly, a second end of the first Y-shaped tee joint and an inlet of the solution preparation assembly, and a third end of the first Y-shaped tee joint is connected with an inlet of the first pump body;

the controller is connected with the front end electromagnetic valve and the three-way valve group and used for controlling the on-off of the front end electromagnetic valve and controlling the flow direction of the pure water in the three-way valve group.

Preferably, the three-way valve group is connected with a first end of a second Y-shaped three-way, an outlet of the first pump body is connected with a second end of the second Y-shaped three-way through a rear end solenoid valve, and a third end of the second Y-shaped three-way is connected with an inlet of the liquid distribution assembly;

the rear end electromagnetic valve is in signal connection with the controller.

Preferably, the liquid preparation assembly comprises a liquid preparation barrel and a liquid preparation detection device which is used for detecting the liquid level of the liquid preparation barrel and is connected with the controller, a high liquid level and a low liquid level are preset in the liquid preparation detection device, and the difference between the volumes of the high liquid level and the low liquid level is the target total amount of the cleaning liquid obtained by liquid preparation of the liquid preparation barrel of the liquid preparation assembly;

when the liquid preparation detection device detects that the liquid preparation barrel is at a low liquid level, the controller is used for controlling the concentrated liquid assembly, the pure water assembly and the first pump body to work in a matched mode so as to supply mixed liquid to the liquid preparation barrel;

when the liquid preparation detection device detects that the liquid preparation device is at a high liquid level, the controller is used for controlling the concentrated liquid assembly, the pure water assembly and the first pump body to stop supplying liquid to the liquid preparation barrel.

Preferably, when the controller receives the low liquid level signal, the controller is configured to control the first pump body to divide the total required amount of the concentrated solution into N times, and the concentrated solution assembly supplies the total required amount of the concentrated solution to the solution preparation barrel, and before each time of supply, the controller controls the second pump body to be opened, controls the valve body assembly to conduct the pure water assembly and the solution preparation assembly, and simultaneously controls the first pump body to reset;

wherein N ═ lxx/I;

l is the target total amount of the cleaning liquid obtained by liquid preparation of the liquid preparation barrel of the liquid preparation assembly, X is the target liquid preparation proportion, and I is the amount of the concentrated liquid extracted by the first pump body once.

Preferably, the pure water assembly comprises a pure water buffer tank for storing pure water and a pure water level detection device for detecting the liquid level of the pure water buffer tank;

the concentrated solution component comprises a concentrated solution barrel and a concentrated solution liquid level detection device for detecting the liquid level of the concentrated solution barrel;

pure water liquid level detection device and concentrate liquid level detection device all connect in the controller, the controller is used for join in marriage liquid detection device and detect and be in low liquid level, just pure water buffer tank liquid level with when the concentrate bucket liquid level satisfies and joins in marriage the liquid requirement, control the concentrate subassembly pure water subassembly first pump body cooperation work, with to join in marriage the liquid bucket and supply with mixed liquid.

Preferably, the controller controls the pure water buffer tank to supply pure water to the first pump through the second pump.

An analyzer system comprising a liquid preparation device, wherein the liquid preparation device is the liquid preparation device with a cleaning function described in any one of the above.

A liquid preparation method with a cleaning function is applied to any one of the liquid preparation devices with the cleaning function; the liquid preparation method comprises the following steps:

s1, controlling the valve body assembly to conduct a passage between the concentrated solution assembly and the first pump body, and controlling the first pump body to pump a predetermined amount of concentrated solution;

s2, controlling the valve body assembly to cut off the passage between the concentrated solution assembly and the first pump body and conduct the passage between the pure water assembly and the solution preparation assembly;

and S3, controlling the pure water assembly to supply pure water to the first pump body and the liquid distribution assembly through the valve body assembly.

Preferably, the S1 includes:

s111, controlling the valve body assembly to conduct a passage from the pure water assembly to the first pump body, cutting off a passage from the concentrated solution assembly to the first pump body, controlling the pure water assembly to supply pure water to the solution preparation assembly through the first pump body, and simultaneously controlling the first pump body to reset; adding 1 to the current extraction times;

s121, determining whether the current number of times of extraction is less than N +1, where N is L × X/I;

wherein L is a target total amount of the cleaning liquid obtained by liquid preparation of a liquid preparation barrel of the liquid preparation assembly, X is a target liquid preparation proportion, and I is a predetermined amount of concentrated liquid extracted by the first pump body in one time;

if the number of times of extraction is less than N +1, executing S131;

if the number of times of extraction is equal to N +1, performing S2;

s131, controlling the valve body assembly to cut off a passage from the pure water assembly to the first pump body, conducting a passage from the concentrated solution assembly to the first pump body, controlling the pure water assembly to stop supplying pure water to the solution distribution assembly, and controlling the first pump body to pump a predetermined amount of concentrated solution; returning to S111.

Preferably, the S1 includes:

s102, controlling the first pump body to reset, and setting the extraction times to be 0;

s112, controlling the valve body assembly to conduct a passage from the concentrated solution assembly to the first pump body, controlling the first pump body to pump a predetermined amount of concentrated solution, and adding 1 to the current pumping times;

s122, controlling the valve body assembly to cut off a passage from the concentrated solution assembly to the first pump body, conducting a pure water assembly to the passage of the first pump body, controlling the pure water assembly to supply pure water to the solution distribution assembly through the first pump body, and simultaneously controlling the first pump body to reset;

s132, determining whether the current number of times of extraction is less than N, where N is lxx/I;

wherein L is the target total amount of the cleaning liquid obtained by liquid preparation of a liquid preparation barrel of the liquid preparation assembly, X is the target liquid preparation proportion, and I is the predetermined amount of the concentrated liquid extracted by the first pump body once;

if the number of times of extraction is less than N, returning to S112; if the number of times of extraction is equal to N, S2 is performed.

In the liquid preparation device with the cleaning function and the liquid preparation method provided by the invention, after the concentrated liquid is extracted, the controller controls the valve body assembly to cut off the passage between the concentrated liquid assembly and the first pump body and conduct the passage between the pure water assembly and the first pump body, so that the pure water can flow to the first pump body and the pipeline behind the first pump body, and the first pump body and the pipeline behind the first pump body can be flushed and the concentrated liquid can be diluted; simultaneously in concentrate and pure water injection join in marriage the liquid subassembly in the middle of, control first pump body and reset, can improve the efficiency of joining in marriage liquid.

The liquid device of joining in marriage with cleaning function that this application provided is through setting up the valve body subassembly, for first pump body and follow-up pipeline provide and be used for abluent pure water, because the original configuration of pure water subassembly in for joining in marriage the liquid device, consequently, need not additionally set up the structure that provides the pure water in this application, that is to say, this application has utilized as diluting used pure water, the realization is washed first pump body and follow-up pipeline, the purpose of dilution, do not increase additional structure by a wide margin, the cost of whole device is lower, take up an area of for a short time.

The application also provides an analyzer system comprising the liquid preparation device with the cleaning function. The system selects the liquid preparation device with the cleaning function, so that crystallization is not easy to generate in the valve body and the pipeline behind the first pump body, the liquid preparation precision of the liquid preparation device is ensured, and the analyzer system has better use accuracy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of a first embodiment of a liquid dispensing apparatus with a cleaning function according to the present invention;

FIG. 2 is a schematic view of a second embodiment of a fluid dispensing apparatus with a cleaning function according to the present invention;

FIG. 3 is a flow chart of a liquid preparation method with a cleaning function according to the present invention;

FIG. 4 is a flow chart of an embodiment of a method for dispensing a liquid with a cleaning function according to the present invention;

fig. 5 is a flowchart of another embodiment of a liquid preparation method with a cleaning function according to the present invention.

In FIGS. 1-5:

102-concentrated solution barrel, 107-concentrated solution level detection device, 302-second pump body, 303-pure water buffer barrel, 304-solution preparation barrel, 305-back end electromagnetic valve, 306-switching three-way electromagnetic valve, 307-cleaning solution transfer diaphragm pump, 308-first pump body, 309-cleaning solution buffer barrel, 311-ball valve, 312-cleaning solution float switch, 313-solution preparation detection device, 314-pure water level detection device, 319-pure water online filter, 320-cleaning solution online filter, 321-analyzer;

317-a second Y-shaped tee joint, 316-a three-way electromagnetic valve, 326-a front end electromagnetic valve and 322-a first Y-shaped tee joint.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The core of the invention is to provide a liquid preparation device with a cleaning function and a liquid preparation method, which can ensure that no concentrated liquid remains in a pump valve and a pipeline after cleaning liquid is prepared, and no crystal is generated, thereby avoiding the influence on precision in subsequent use.

Another core of the present invention is to provide an analyzer system comprising the above liquid dispensing apparatus with cleaning function.

Referring to fig. 1 to 5, fig. 1 is a schematic view of a liquid preparation device with a cleaning function according to a first embodiment of the present invention; FIG. 2 is a schematic view of a second embodiment of a liquid dispensing apparatus with a cleaning function according to the present invention; FIG. 3 is a flow chart of a liquid preparation method with a cleaning function according to the present invention; fig. 4 is a flowchart of an embodiment of a liquid dispensing method with a cleaning function according to the present invention, and fig. 5 is a flowchart of another embodiment of the liquid dispensing method with a cleaning function according to the present invention.

The application provides a join in marriage liquid device with cleaning function, should join in marriage liquid device and mainly include pure water subassembly, concentrate subassembly, join in marriage liquid subassembly and controller structurally.

It should be noted that the pure water component is a structure for storing pure water and is used for providing pure water; the concentrated solution component is a device for storing concentrated solution and is used for providing the concentrated solution; the liquid preparation assembly is used for receiving pure water and concentrated liquid to be matched to obtain mixed liquid or receiving mixed liquid which is mixed completely, the three assemblies are called assemblies, the assemblies are of structures for containing liquid, and can be containers such as barrels or bottles, and in addition, the three assemblies can also be provided with parts such as pump bodies for providing liquid flowing power.

The outlet of the concentrated liquid component and the outlet of the pure water component are both connected to the inlet of the first pump body 308 through the valve body component, and the outlet of the first pump body 308 is connected with the liquid distribution component; the pure water assembly comprises a second pump body 305, and an outlet of the second pump body 305 is connected with an inlet of the first pump body 308 through a valve body assembly; a controller is also included and is in signal communication with the first pump body 308, the second pump body 305 and the valve body assembly.

The controller is used for controlling the passage of the valve body assembly for communicating the concentrated solution assembly with the first pump body 308, so that the concentrated solution is supplied to the solution distribution assembly from the concentrated solution assembly by the first pump body 308, and for controlling the passage of the pure water assembly and the solution distribution assembly by the valve body assembly after the valve body assembly stops supplying the concentrated solution to the first pump body 308, so that the pure water is supplied to the passage of the first pump body 308 to the solution distribution assembly from the pure water assembly.

It should be noted that the valve body assembly is respectively connected to the outlet of the concentrated solution assembly, the outlet of the pure water assembly, and the inlet of the first pump body 308, and is used for controlling the connection and disconnection between the concentrated solution assembly and the first pump body 308 and the connection and disconnection between the pure water assembly and the first pump body 308. Optionally, the main body of the valve body assembly may be a three-way valve, and three ends of the valve body assembly are respectively connected to the concentrated solution assembly, the pure water assembly, and the first pump body 308. Or, the valve body assembly may include two valve bodies, one valve body connects the concentrated solution assembly and the inlet of the first pump body 308, the other valve body connects the pure water assembly and the inlet of the first valve body 308, and the valve body assembly may control one of the two valve bodies to be in a communication state, so that the corresponding assembly is communicated with the first pump body 308.

The first pump body 308 is a power component for pumping and guiding the liquid in the components communicated with the first pump body into the liquid distribution component, and the first pump body 308 may be various types of pump bodies such as a plunger pump, and a pump body with high precision is preferably selected in the actual implementation process.

Optionally, when the plunger pump is used as the first pump body 308, in consideration of the usage characteristics of the plunger pump, the inlet and the outlet of the first pump body 308 may be respectively provided with an electromagnetic valve, so that when the plunger pump is in different states, the liquid on both sides of the plunger pump is cut off, and the reverse suction or reverse discharge is avoided.

The concentrated solution assembly and the pure water assembly are connected with the first pump body 308 through the valve body assembly, and are used for providing corresponding liquid for the first pump body 308 through the valve body assembly, the provided power can be realized by the first pump body 308, and the first pump body 308 provides the extracted liquid for the liquid distribution assembly.

Under the condition that the concentrated solution assembly is communicated with the first pump body 308 by the valve body assembly, the controller controls the first pump body 308 to extract a fixed amount of concentrated solution according to the requirement of solution preparation and guide the concentrated solution into the solution preparation assembly. It should be noted that the concentrated solution can be pumped once, or through multiple pumps, depending on the actual application, or depending on the operating characteristics of the first pump 308.

After the concentrated solution is extracted, the controller controls the valve body assembly to cut off the passage between the concentrated solution assembly and the first pump body 308 and conduct the passage between the pure water assembly and the first pump body 308, so that the pure water can enter the passage between the first pump body 308 and the solution distribution assembly through the valve body assembly.

It should be noted that the pure water is injected into the passage, and it is understood that the pure water is injected into only the passage, or only into the liquid preparation unit. The former will not change the concentration in the liquid preparation assembly, and the latter will continue to inject pure water into the liquid preparation assembly to achieve dilution of the concentrated liquid in the liquid preparation assembly, because the liquid preparation process is usually to inject pure water into the concentrated liquid after the concentrated liquid is extracted, and the amount of injected pure water needs to be set according to the target ratio of the liquid preparation. It is of course also possible, as in the former, to no longer inject pure water, provided that the amount of pure water in the liquid dosing assembly has previously reached the target value.

It can be known that, because after the control valve body subassembly stops to supply with the concentrate to first pump body 308, change into and let in the pure water to first pump body 308 by the valve body subassembly, the pure water passes through first pump body 308 and the pipeline of being connected with first pump body, can reach the effect of wasing first pump body 308 to the route of joining in marriage between the liquid subassembly, so that other valve bodies between so far, the pump body etc. all can be filled by the pure water, no matter the aforesaid is joined in marriage liquid device and is placed or receive external environment influence, the phenomenon that the crystal appears in can not leading to the above-mentioned structure, just can not lead to the problem that the crystal blocks up pump valve, pipeline, to whole liquid device of joining in marriage, can guarantee can not take place to join in marriage the inaccurate condition of liquid when next use.

The liquid device of joining in marriage with cleaning function that this application provided is through setting up the valve body subassembly, for first pump body 308 and follow-up pipeline provide and be used for abluent pure water, because the original configuration of pure water subassembly in for joining in marriage the liquid device, consequently, need not additionally set up the structure that provides the pure water in this application, that is to say, this application has utilized as diluting used pure water, the realization is washed first pump body and follow-up pipeline, the purpose of dilution, do not increase additional structure by a wide margin, the cost of whole device is lower, take up an area of for a short time.

The above is a specific embodiment provided by the present application, and the structure thereof can be adjusted according to actual situations.

Preferably, in order to ensure the liquid dispensing precision, the first pump body 308 generally adopts a plunger pump to pump the concentrated liquid, and due to the structure and characteristics of the plunger pump, the first pump body 308 generally does not pump all the concentrated liquid at one time, but pumps the concentrated liquid for multiple times. The first pump 308 therefore divides the total concentrate demand into N times for supply from the concentrate module to the dispensing module.

When the concentrated solution is supplied each time, the controller controls the valve body assembly to communicate the concentrated solution assembly with the passage of the first pump body 308, so that the first pump body 308 can extract a preset amount of concentrated solution from the concentrated solution assembly, after the first pump body 308 is controlled to complete the extraction of the preset amount of concentrated solution, the valve body assembly is controlled to conduct the passage of the pure water assembly and the solution distribution assembly, the second pump body 302 is controlled to enable the pure water in the pure water assembly to bring the concentrated solution in the first pump body 308 into the solution distribution assembly, and the first pump body 308 is controlled to reset during the period that the concentrated solution and the pure water are injected into the solution distribution assembly.

The predetermined amount is the volume of once extracting the concentrate for first pump body (308), this application is behind the concentrate of first pump body extraction predetermined amount, the control valve body subassembly cuts off the route between concentrate subassembly and the first pump body 308, the control valve body subassembly switches on the route of pure water subassembly and joining in marriage the liquid subassembly, control second pump body 302 makes the concentrate of the predetermined amount of extraction in the pure water will first pump body 308 bring into join in marriage the liquid subassembly, and in concentrate and pure water pour into the period of joining in marriage the liquid subassembly, control first pump body 308 and reset, prepare for next extraction concentrate, make the device can wash valve body subassembly, the pump body and pipeline, can improve the efficiency of joining in marriage the liquid again, save time.

In the above-mentioned period when the concentrated solution and the pure water are injected into the solution preparation assembly, the controlling of the first pump 308 to reset may be that after the first pump 308 is controlled to complete the extraction of the predetermined amount of the concentrated solution, the valve body assembly is controlled to conduct the passage between the pure water assembly and the solution preparation assembly, and at the same time, the first pump 308 is controlled to reset; or the first pump body is controlled to reset after the second pump body (302) is controlled to enable pure water in the pure water assembly to bring concentrated liquid in the first pump body 308 into the liquid preparation assembly for a certain time, wherein the certain time can be the time required by the pure water to bring all the extracted predetermined amount of concentrated liquid into the liquid preparation assembly, or the certain time can be a predetermined period of time, and can be set according to actual requirements, which is not limited herein.

All modifications in the embodiments of the present application can be combined with the above-described embodiments.

In order to simplify the structure of the liquid dispensing device and maximize the cleaning effect of pure water, based on the above embodiments, in the structure of the first embodiment, the valve body assembly specifically includes a switching three-way electromagnetic valve 306, two ends of the switching three-way electromagnetic valve 306 are respectively and correspondingly connected to the outlet of the concentrated liquid assembly and the outlet of the pure water assembly to obtain concentrated liquid and pure water, and the other end of the switching three-way electromagnetic valve 306 is connected to the inlet of the first pump body 308 to deliver the concentrated liquid or the pure water to the first pump body 308;

the controller is used for controlling the three-way electromagnetic valve 306 to feed liquid from the outlet of the concentrated liquid component or the outlet of the pure water component and discharge the liquid to the first pump body 308.

It should be noted that the switching three-way electromagnetic valve 306 is connected to the controller, the change of the flow direction is realized by the control of the controller, and the switching three-way electromagnetic valve 306 is connected to the outlet of the concentrated solution assembly and the outlet of the pure water assembly, so as to obtain the concentrated solution and the pure water, and discharge the concentrated solution and the pure water to the first pump body 308. The concentrated solution and the pure water both pass through the switching three-way solenoid valve 306, and one of the concentrated solution and the pure water is selected by the switching three-way solenoid valve 306 to flow to the first pump body 308. That is, the passage from the three-way solenoid valve 306 to the first pump 308 can be filled with pure water during use, so as to achieve the purposes of cleaning and dilution.

Referring to fig. 1, an outlet (i.e., a liquid outlet) of the pure water module (including the pure water buffer tank 303) and an outlet (i.e., a liquid outlet) of the concentrated solution module (including the concentrated solution tank 102) are respectively connected to two different interfaces of the switching three-way electromagnetic valve 306 through a pipeline or directly connected to the two different interfaces of the switching three-way electromagnetic valve 306, the other interface of the switching three-way electromagnetic valve 306 is connected to the first pump body 308, and the first pump body 308 may be connected to the solution distribution module through the rear-end electromagnetic valve 305.

With regard to the structure of such a liquid dispensing apparatus, the liquid dispensing operation can be carried out as follows:

firstly, a controller controls the front end (namely a liquid inlet end) of a switching three-way electromagnetic valve 306 to be communicated with a pure water component, and the pure water component is adjusted to be in a water outlet state; and controls the first pump 308 to enter a reset state so that the first pump 308 can accurately pump a target amount of liquid when opened in a subsequent step.

Secondly, the controller controls the front end (namely the liquid inlet end) of the switching three-way electromagnetic valve 306 to be communicated with the concentrated liquid component, the concentrated liquid component is adjusted to be in a liquid discharging state, and the passage between the pure water component and the first pump body 308 is cut off; and controlling the first pump body to pump the concentrated solution with the target quantity value.

Thirdly, if the amount of the concentrated liquid in the liquid preparation process is extracted, the controller controls the switching of the front end of the three-way electromagnetic valve 306 to be communicated with the pure water component, the pure water component is adjusted to be in a water outlet state, and pure water is communicated to the first pump body 308 and subsequent pipelines, so that the three-way electromagnetic valve 306 is switched to the first pump body 308, and the first pump body 308 and the subsequent pipelines are filled with pure water, and the possibility of crystallization is reduced.

In practical application, the liquid preparation assembly in the above structure is further connected to the cleaning liquid buffer tank 309 through a cleaning liquid transfer pump, and the cleaning liquid buffer tank are connected through a cleaning liquid transfer pump, specifically, the cleaning liquid transfer pump can be the cleaning liquid transfer pump 307, so as to store the cleaning liquid.

Optionally, a cleaning solution float switch 312 is disposed on the cleaning solution buffer tank 309, and the cleaning solution float switch 312 is connected to the controller so as to obtain the liquid level state of the cleaning solution buffer tank 309.

Buffer tank 309's effect is the washing liquid of storing standard liquid proportion of joining in marriage, the analysis appearance extracts the washing liquid from buffer tank 309 and washs, then buffer tank 309's liquid level can reduce gradually, until reaching low liquid level, if join in marriage the liquid bucket and do not join in marriage the liquid, and when not at low liquid level, then control starts washing liquid and changes the washing liquid that has joined in marriage in the liquid bucket and change into buffer tank 309 with diaphragm pump 307, and then fall to low liquid level with liquid level in joining in marriage the liquid bucket, control stops to change at this moment, restart above-mentioned liquid process of joining in marriage, it is full with joining in marriage liquid bucket 304.

Since the ratio of the cleaning solution in the solution preparation process is not a standard ratio (1:20), the ratio can be met only when the liquid level reaches a high level, so that the solution preparation barrel 304 cannot be directly connected to the analyzer 321, the cleaning solution is provided for the analyzer, and the cleaning solution can be pumped into the buffer barrel 309 for the analyzer 321 to use after the solution preparation.

Alternatively, the cleaning solution buffer tank 309 may be directly connected to the analyzer 321, or the cleaning solution buffer tank 309 may be connected to the analyzer 321 through the cleaning solution in-line filter 320 to increase the purity of the cleaning solution entering the analyzer 321, in consideration of the fact that substances interfering with the analysis may be generated or entered in the above process.

Optionally, the pure water module may further have a passage directly communicating with the analyzer 321 so as to be supplemented when pure water is required to be used in the analyzer 321, and optionally, the pure water module may be connected to the pure water inlet of the analyzer 321 through the pure water module in-line filter 319.

Optionally, when the first pump body 308 is a plunger pump, it is necessary to ensure the liquid pressure at both ends of the plunger pump, and a rear-end electromagnetic valve 305 is usually disposed at the rear end of the plunger pump, and the pressure of the plunger pump is controlled by on-off of the rear-end electromagnetic valve 305.

The above operation is an automated process, and therefore, the amount of liquid in the pure water component and the concentrated liquid component needs to be ensured to meet the liquid preparation process in the process controlled by the controller.

On the basis of the first embodiment, the present application provides a second embodiment, in which the valve body assembly includes a three-way valve set, a front-end solenoid valve 326 and a first Y-shaped three-way 322;

an inlet of the front-end solenoid valve 326 is connected with an outlet of the concentrated solution assembly, an outlet of the front-end solenoid valve 326 is connected with a first end of a first Y-shaped tee joint 322, three ends of the tee joint valve group are respectively connected with an outlet of the pure water assembly, a second end of the first Y-shaped tee joint 322 and an inlet of the solution distribution assembly, and a third end of the first Y-shaped tee joint 322 is connected with an inlet of the first pump body 308;

the controller is connected with the front-end solenoid valve 326 and the three-way valve group and is used for controlling the on-off of the front-end solenoid valve 326 and controlling the flow direction of pure water in the three-way valve group.

It should be noted that the three-way valve set may be a three-way solenoid valve, or may be a combination valve having a three-way valve and a matching module, and in this embodiment, the three-way valve set, the front-end solenoid valve 326 and the first Y-shaped three-way 322 are combined to form the valve body assembly in the foregoing embodiment.

The three-way valve set is used for obtaining pure water of the pure water component and selectively flows to the liquid distribution component or the first Y-shaped three-way valve 322. The front-end solenoid valve 326 is used for controlling the on-off of the concentrated solution assembly and the first Y-shaped tee 322, and the first Y-shaped tee 322 is used for collecting the liquid outlet of the three-way valve set and the front-end solenoid valve 326.

The first of these Y-junctions 322 is not meant to be ordered, but merely to distinguish it from other Y-junctions by name.

In this embodiment, another possible structural form of the liquid dispensing device is provided, specifically referring to fig. 2, further, the three-way valve set is connected to a first end of a second Y-shaped three-way 317, an outlet of the first pump 308 is connected to a second end of the second Y-shaped three-way 317 through a rear end solenoid valve 305, and a third end of the second Y-shaped three-way 317 is connected to an inlet of the liquid dispensing assembly; the rear end solenoid valve 305 is in signal connection with the controller.

It should be noted that, in the above structure, the second Y-shaped tee 317 needs to be added, so that pure water is normally introduced into the three-way valve set to the second Y-shaped tee 317 and then to the passage of the liquid preparation assembly for transmission, and when pure water is needed to clean and dilute the first pump body 308, the three-way valve set can be communicated with the passage of the first pump body. In a specific embodiment, the three-way valve set is a three-way electromagnetic valve 316, and referring to fig. 2, three ends of the three-way electromagnetic valve 316 are respectively connected to the outlet of the pure water component, the inlet of the liquid distribution component, and a first Y-shaped three-way 322.

Or, in a specific embodiment, the three-way valve set includes a three-way electromagnetic valve 316 and an electromagnetic valve, two ends of the three-way electromagnetic valve 316 are respectively connected to the outlet of the pure water component and the inlet of the liquid distribution component, and the other end of the three-way electromagnetic valve 316 is communicated with a first Y-shaped three-way 322 through the electromagnetic valve.

Or, the three-way valve assembly in the above structure may be a three-way pipeline (e.g., a Y-shaped three-way pipeline) and an electromagnetic valve, and when the three-way pipeline is directly connected to the liquid dispensing assembly, a pump body or a valve body for controlling the flow of pure water needs to be disposed on a passage between the three-way pipeline and the liquid dispensing assembly, or a pump body or a valve body for controlling the flow of pure water is disposed inside the pure water assembly.

On the basis of the above embodiment, the liquid preparation assembly includes a liquid preparation barrel 304 and a liquid preparation detection device 313 connected with the controller and used for detecting the liquid level of the liquid preparation barrel 304, the liquid preparation detection device 313 is preset with a high liquid level and a low liquid level, and the difference in volume between the high liquid level and the low liquid level of the liquid preparation barrel is the target total amount of the cleaning liquid obtained by liquid preparation. When the liquid preparation detection device 313 detects that the liquid is at a low liquid level, the controller is used for controlling the concentrated liquid component, the pure water component and the first pump body 308 to work cooperatively so as to supply mixed liquid to the liquid preparation barrel 304;

when the liquid preparation detection device 313 detects that the liquid is at a high liquid level, the controller is used for controlling the concentrated liquid assembly, the pure water assembly and the first pump 308 to stop supplying liquid to the liquid preparation barrel 304.

The dispensing barrel 304 is a container for mixing the liquid, and the dispensing barrel 304 may be any structure for stably holding the liquid.

It should be noted that the liquid preparation detecting device 313 includes a sensor or other device for sensing the liquid level. The controller is connected to the liquid distribution detection device 313 for receiving a signal from the liquid distribution detection device 313, so as to control the concentrated liquid component and the pure water component to supply different liquids to the first pump 308.

It should be noted that when the liquid distribution detection device 313 detects that the liquid distribution device is at a low liquid level or a high liquid level, the controller needs to control the rear end electromagnetic valve 305 connected to the liquid outlet end of the first pump 308, in addition to the concentrated liquid component, the pure water component, and the first pump 308, and specifically, the rear end electromagnetic valve 305 is connected between the first pump 308 and the liquid distribution device.

The liquid level difference between the high liquid level and the low liquid level of the liquid preparation detection device 313 is the total amount of the cleaning liquid obtained by liquid preparation of the liquid preparation barrel.

Specifically, the liquid distribution detection device 313 may include two sensors, a high liquid level sensor that detects a high liquid level and a low liquid level sensor that detects a low liquid level, respectively.

Alternatively, the liquid distribution detection device 313 may be a liquid distribution float switch, and the liquid distribution float switch is connected with a controller to realize detection and control.

Since the first pump 308 generally does not draw all of the concentrate at once, the structure and characteristics of the plunger pump determine that multiple draws are required, particularly when the plunger pump is used as the first pump. Therefore, based on the above embodiment, when the controller receives the low liquid level signal, the controller is configured to control the first pump 308 to divide the total required amount of the concentrated solution into N times to be supplied from the concentrated solution module to the solution dispensing barrel 304, and before each time of supply, the controller controls the second pump 305 to be opened, and controls the valve module to conduct the pure water module and the first pump 308 and the solution dispensing module, and simultaneously controls the first pump 308 to be reset;

wherein N ═ lxx/I; l is the difference between the high liquid level and the low liquid level of the liquid preparation barrel 304, and is the target total amount of the cleaning liquid obtained by liquid preparation of the liquid preparation barrel, X is the target liquid preparation ratio, and I is the amount of the concentrated liquid once pumped by the first pump body 308.

It should be noted that the above process is completed N times, and the purpose is to reset the first pump body 308 for the first time and control the valve body assembly to conduct the pure water assembly and the first pump body 308, so as to reset the first pump body 308, and avoid inaccurate pumping amount caused by the fact that the first pump body 308 is not at the initial position when pumping liquid starts. Since the first pump 308 does not provide concentrate to the dispensing assembly for the first reset, there are only N pump strokes.

The value N is determined by the volume difference L of the dispensing detection device 313 (i.e., the dispensing float switch) of the dispensing barrel and the amount I of the concentrate drawn by the single operation of the first pump body 308 and the dispensing ratio X, and the calculation formula is N ═ L × X/I.

Taking the operation of the plunger pump as an example, if the volume of the dispensing barrel is 2.4L (i.e. 2400ml), 120ml (2400ml × 1/20) of concentrated solution is required to dispense 1:20 of cleaning solution, and if the first pump 308 draws and dispenses 5ml of concentrated solution per stroke, 25 ═ 120/5+1 cycles are required in total, wherein the first reset actually functions to ensure that the plunger pump is at the reset position when dispensing is started, so as to avoid the plunger pump from being locked when making a downward stroke, which causes subsequent liquid dispensing failure, and during this process, no concentrated solution is discharged, and during the subsequent 24 times of resetting of the first pump 308, the concentrated solution in the cavity of the plunger pump is discharged, and the concentrated solution is ensured to enter the dispensing barrel.

It can be appreciated that when the first pump 308 is a plunger pump, I is the amount of concentrate solution drawn in a single stroke. Alternatively, when the first pump 308 is another type of pump, I is the amount of concentrate obtained in a single operation or pump.

It should be noted that, the controllers all control the first pump body 308 to reset and control the valve body assembly to conduct the pure water assembly and the first pump body 308, and it is different from the method of changing the passage in the valve body assembly in embodiment 1 to control the pure water to be conducted to the first pump body 308, and the time and the effect of the two are different, the former is to flush the concentrated liquid in the current pipeline into the liquid preparation assembly, and the latter is to mainly dilute the concentrated liquid in the passages of the first pump body 308 and the liquid preparation assembly by using the pure water.

The pure water unit includes a pure water buffer tank 303 for storing pure water and a pure water level detection means 314 for detecting a liquid level of the pure water buffer tank 303 on the basis of any of the above embodiments;

the concentrated solution assembly comprises a concentrated solution barrel 102 and a concentrated solution level detection device 107 for detecting the liquid level of the concentrated solution barrel;

the pure water level detection device 314 and the concentrated solution level detection device 107 are both connected to the controller, and the controller is configured to control the concentrated solution component, the pure water component, and the first pump 308 to work cooperatively to supply a mixed solution to the solution preparation barrel 304 when the solution preparation detection device 313 detects that the solution level is at a low level and the pure water barrel level and the concentrated solution barrel level meet the solution preparation requirement.

It should be noted that, in the present application, the concentrated liquid level detection device 107 disposed on the concentrated liquid barrel 102 of the concentrated liquid assembly may be a float switch for concentrated liquid, and the pure water level detection device 314 disposed on the pure water buffer tube 303 of the pure water assembly may be a float switch for pure water, both of which are detection mechanisms, and can directly measure the liquid level and feed back the liquid level to the controller.

The pure water barrel liquid level and the concentrated liquid barrel liquid level are preset in the controller to meet the minimum liquid level required by work, and if the liquid levels measured by the concentrated liquid float switch and the pure water float switch are lower than the minimum liquid level, the controller cannot drive the first pump body 308 or the valve assembly to work, so that the effect of protecting the system from running stably is achieved.

On the basis of the above embodiment, the outlet of the pure water buffer tank 303 is connected to the second pump body 302, the outlet of the second pump body 302 is connected to the valve assembly, and the controller is connected to the second pump body 302 and is configured to control the pure water buffer tank 303 to supply pure water to the first pump body 308, that is, control the pure water buffer tank 303 to supply pure water to the first pump body 308 through the second pump body 302.

Optionally, the second pump body in this application may be a pure water pumping diaphragm pump.

Optionally, a pipeline for connecting with an external pure water source is further provided on the pure water cache bucket 303 in this application, and a ball valve 311 is provided on the pipeline.

In addition to the structure and connection relationship of the liquid preparation device with cleaning function provided in the above embodiments, the present invention also provides an analyzer system including the liquid preparation device disclosed in the above embodiments, and the structure of other parts of the analyzer system refer to the prior art and are not described herein again. The operation method of the liquid preparation device in the liquid preparation process of the analyzer system can refer to the use process of the liquid preparation device, and can also refer to the liquid preparation method with the cleaning function.

The method is applied to the liquid preparation device with the cleaning function, the liquid preparation device comprises a pure water assembly, a concentrated liquid assembly and a liquid preparation assembly, an outlet of the concentrated liquid assembly and an outlet of the pure water assembly are connected to an inlet of a first pump body through a valve body assembly, and an outlet of the first pump body is connected with the liquid preparation assembly; the liquid preparation method specifically comprises the following steps:

step S1, controlling the valve body assembly to conduct the passage between the concentrated solution assembly and the first pump body 308, and controlling the first pump body 308 to supply concentrated solution to the solution distribution assembly;

step S2, controlling the valve assembly to cut off the passage between the concentrated solution assembly and the first pump body 308 and to conduct the passage between the pure water assembly and the first pump body 308;

step S3, the pure water unit is controlled to supply pure water to the passage from the first pump 308 to the liquid distribution unit through the valve body unit.

It should be noted that the method may be applied to the liquid dispensing device with a cleaning function provided in any one of the above embodiments, or may also be applied to a specific liquid dispensing device provided in this embodiment. Since the structure of each of the above embodiments has been described in detail, the description thereof is omitted.

In step S1, the concentrated solution is circulated through the passage between the valve body assembly and the first pump body 308, the first pump body 308 provides the flowing power, and the process depends on the pressure of the fluid; when the first pump body 308 is a plunger pump, the control valve assembly connects the concentrate assembly and the first pump body 308, and controls the first pump body to pump a predetermined amount of concentrate.

In step S2, the valve body assembly is used to switch the flow opening, and the pure water assembly is conducted to the valve body assembly and then to the first pump body 308, so that the pure water can enter the first pump body 308, and the pure water can pass through the first pump body 308 and finally flow into the liquid distribution assembly.

In step S3, pure water supplied from the pure water module is used to flush the section of the pipeline and to dilute the concentrate in the pipeline.

In the liquid dispensing method provided in this embodiment, the liquid dispensing method can be applied to any liquid dispensing device with a cleaning function provided in this application, and all of the liquid dispensing devices have a common feature, that is, the valve body assembly connects the outlet of the pure water assembly, the outlet of the concentrated liquid assembly, and the inlet of the first pump 308, and since the first pump 308 can provide power for the passage, when the valve body assembly connects one of the outlet of the pure water assembly and the outlet of the concentrated liquid assembly to the first pump 308, pure water or concentrated liquid respectively flows into the first pump 308. In the use process, after the concentrated solution pumping process is completed, the valve body assembly is selected and utilized to conduct the passage of the pure water assembly and the first pump body 308, so that the pure water passes through the route through which the concentrated solution passes, the concentrated solution can be cleaned, the concentrated solution can be washed completely, and the concentrated solution is prevented from being left in the passage to form crystals, and the accuracy of subsequent solution preparation is not affected.

On the basis of the above embodiment, the step S1 includes:

s111, controlling the valve body assembly to conduct a passage from the pure water assembly to the first pump body, cutting off a passage from the concentrated liquid assembly to the first pump body, and controlling the pure water assembly to supply pure water to the first pump body, namely controlling the pure water assembly to supply pure water through the first pump body and the liquid distribution assembly, and simultaneously controlling the first pump body to reset; and adds 1 to the current number of draws.

Step S121, determining whether the current number of times of extraction is less than N +1, where N is L × X/I;

wherein L is the target total amount of the cleaning liquid obtained by the liquid preparation barrel of the liquid preparation assembly, X is the target liquid preparation proportion, and I is the predetermined amount of the concentrated liquid extracted by the first pump body in a single time;

if the number of times of extraction is less than N +1, executing step S131;

if the number of times of extraction is equal to N +1, step S2 is performed.

And S131, controlling the valve body assembly to cut off a passage from the pure water assembly to the first pump body, conducting a passage from the concentrated solution assembly to the first pump body, controlling the pure water assembly to stop supplying pure water to the first pump body and the solution distribution assembly, controlling the first pump body to extract a predetermined amount of concentrated solution, and returning to S111.

In step S111, it is found that the pure water unit is controlled to supply pure water to the first pump and the liquid dispensing unit, and the first pump is controlled to be reset, so that the operating efficiency of the liquid dispensing system can be improved.

It should be noted that in this application, "controlling the valve body assembly to conduct the passage of the pure water assembly to the first pump body" means conducting the passage thereof to allow the pure water assembly to deliver water to the first pump body, wherein, the pure water component can be a component which always supplies water to the valve body component, but the arrangement can shorten the service life of a pump body (such as a diaphragm pump) in the pure water component, it is therefore preferable that the pumps or power units in the pure water unit be operated by the control of the step of "controlling the pure water unit to supply pure water to the first pump", and that, in general, a short time is left between the passage for conducting the pure water component to the first pump body and the pure water supply control of the pure water component to the first pump body, for example several milliseconds, etc., which can ensure that the first pump body is supplied with water through the pure water unit in order to flush the concentrate, and on the other hand, can ensure the service life of the pump body in the pure water unit.

Please refer to fig. 1, wherein fig. 1 is a liquid preparation apparatus to which the liquid preparation method of the present embodiment is applied.

It should be noted that the number of times of extraction is set to 0 before step S111, and after the cycle from step S111 to step S131, the number of times of extraction is stepped, and the number of times of extraction is increased by one for each time of extracting the concentrated solution.

In a specific embodiment, the above method is suitable for the configuration apparatus provided in fig. 1, and specifically, the valve body assembly specifically includes a switching three-way electromagnetic valve 306, two ends of the switching three-way electromagnetic valve 306 are respectively and correspondingly connected to an outlet of the concentrated solution assembly and an outlet of the pure water assembly to obtain the concentrated solution and the pure water, and another end of the switching three-way electromagnetic valve 306 is connected to an inlet of the first pump 308 to deliver the concentrated solution or the pure water to the first pump 308. Optionally, a pure water pumping diaphragm 302 is disposed on the pure water assembly.

The method specifically comprises the following steps:

the number of times of extraction needs to be set to 0 before entering the step for the first time;

step S111, communicating the front end of the switching three-way electromagnetic valve 306 to a pure water component, opening a pure water pumping diaphragm pump, opening a rear end electromagnetic valve 305 connected to a rear end passage of the first pump body 308, and controlling the first pump body 308 to reset; adding 1 to the current extraction times;

step S121, communicating the front end of the switching three-way electromagnetic valve 306 to a concentrated solution assembly, closing the pure water pumping diaphragm pump, closing the rear end electromagnetic valve 305, and pumping down a predetermined amount of concentrated solution by the first pump body 308;

the steps S111 and S121 need to be repeated N +1 times in total, where N is determined by the volume difference L of the float switch at the high and low positions of the dispensing barrel and the amount I of the concentrate drawn by the single stroke of the first pump 308 and the dispensing ratio X, and the calculation formula is N ═ L × X/I.

In an embodiment, taking the first pump body 308 as a plunger pump as an example, if the volume difference of the high-low float switch in the dispensing barrel is 2.4L to 2400ml, then 1: when the cleaning liquid of 20 times needs 120ml (2400 × 1/20) of concentrated liquid, and the plunger pump pumps and spits 5ml of concentrated liquid per stroke, 25 cycles (120/5+1) are needed in total, and after the last time of pumping liquid is completed, the controller controls not to operate the cycle, but to jump to step S2, and the water injection state of the liquid preparation barrel is kept until the pure water is completely injected.

For example, a sensor is disposed on the top of the liquid dispensing assembly to sense whether the total amount of liquid in the dispenser reaches a target amount, and when the total amount of pure water reaches a preset target amount, the dispenser determines that the total amount of pure water is sufficient, and the dispenser may stop the water supply operation of the pure water assembly.

It should be noted that, the operation speed of the plunger pump is controlled in the program to ensure that the liquid level of the liquid preparation barrel cannot reach the high liquid level of the liquid preparation assembly after the concentrated liquid is completely filled, and the time difference of water filling 20-30s before the liquid level reaches the high level can ensure that the rear end pipeline of the first pump body 308 and the cavity of the pump valve are all cleaned and completely filled with pure water.

Optionally, after step S3, detecting a state of a high-level float switch of the liquid dispensing float switch in real time, if the state lasts for 1S and the liquid dispensing is successful if the high-level float switch is maintained, at this time, the liquid dispensing may be stopped, the pure water pumping diaphragm pump may be closed, and the rear-end electromagnetic valve 305 may be closed.

Optionally, the duration of 1s is data in a simple embodiment, or may be other time periods, and may be adjusted according to use, and the function of the time delay determination ensures that the cleaning liquid in the liquid distribution barrel is actually in a high liquid level state.

In the solution provided in this embodiment, after the solution preparation is completed, the three-way electromagnetic valve 306 is switched to the first pump body 308, and then to the path from the rear end electromagnetic valve 305 to the solution preparation barrel 304, the pump valve cavity and the pipeline are filled with pure water of the pure water component, and no matter how long the solution preparation device is placed or influenced by the environment, no crystal is precipitated, no pump valve or pipeline is blocked, so that the analyzer can have stable supply of the cleaning solution.

Considering that the improvement of the method and the structure can cause the increase of the cost, the application does not obviously increase the cost, compared with the prior art, the cost is reduced, the production is faster and more convenient, and the method and the device are suitable for large-scale production.

The specific steps of another specific embodiment are as follows:

step 1: switching the front end of the switching three-way electromagnetic valve 306 to a state of being communicated with the pure water component, opening a pure water pumping diaphragm pump, opening a rear end electromagnetic valve 305 and a first pump body 308, and controlling the plunger pump to pump a predetermined amount of concentrated solution;

step 2: the switching three-way electromagnetic valve 306 is switched to a state of being communicated with the concentrated solution assembly, the pure water pumping diaphragm pump is closed, the rear end electromagnetic valve 305 is closed, and the first pump body 308 is reset, wherein in the process of resetting the first pump body 308, pure water in the first pump body 308 is filled into a pipeline between the concentrated solution bottle 102 and the switching three-way electromagnetic valve 306.

Repeating the steps 1 and 2 for a total of N times, wherein the calculation formula is that N is L multiplied by X/I, discarding decimal places as a result, rounding, ensuring that pure water does not enter a concentrated solution bottle to pollute the concentrated solution due to the fact that no more pure water is filled, and continuing to prepare the solution after the pump valve state is restored to the solution preparation step 1.

All the pump valves and pipelines are not affected by precipitation of the concentrated liquid crystal by pure water filling of all the pump valves and pipelines between the concentrated liquid bottle 102 and the liquid preparation barrel 304, and further the liquid preparation device can work normally and stably.

On the basis of the above embodiment, the step S1 includes:

step S112, controlling the valve body assembly to conduct a passage from the concentrated solution assembly to the first pump body, controlling the first pump body to extract a predetermined amount of concentrated solution, and adding 1 to the current extraction times;

step S122, the valve body assembly is controlled to cut off a passage from the concentrated solution assembly to the first pump body, conduct a passage from the pure water assembly to the first pump body, and control the pure water assembly to supply pure water to the first pump body, namely control the pure water assembly to supply pure water through the first pump body like the solution distribution assembly, and simultaneously control the first pump body to reset;

step S132, determining whether the current number of times of extraction is less than N, where N is L × X/I;

the pump comprises a first pump body, a second pump body, a liquid preparation barrel, a liquid preparation component and a liquid preparation component, wherein L is the target total amount of cleaning liquid obtained by liquid preparation of the liquid preparation barrel of the liquid preparation component, X is the target liquid preparation proportion, and I is the predetermined amount of concentrated liquid extracted by the first pump body at a time;

if the number of times of extraction is less than N, returning to S112;

if the number of times of extraction is equal to N, S2 is performed.

Referring to the specific structure of fig. 2, the control mode under the structure may still be selected from the aforementioned control modes, and of course, the following specific control modes may also be selected, wherein the specific quantity values may be adjusted in actual use:

step S103, the rear end of the three-way electromagnetic valve 316 is communicated with a passage of a second Y-shaped three-way 317, a pure water pumping diaphragm pump is opened, a rear end electromagnetic valve 305 is opened, a front end electromagnetic valve 326 is closed, and the first pump body 308 is reset;

step S113: opening the front end solenoid valve 326, closing the rear end solenoid valve 305, and pumping down the first pump body 308 with a predetermined amount of concentrate;

step S123: the rear end solenoid valve 305 is opened, the front end solenoid valve 326 is closed, and the first pump body 308 is reset;

step S133, determining whether the current number of times of extraction is less than N, where N is lxx/I;

if the number of times of extraction is less than N, returning to S113; if the number of times of extraction is equal to N, S2 is performed.

Step S134, after the step S2, is to switch the rear end of the three-way solenoid valve 316 to the first Y-shaped three-way 322, detect the state of the high float switch of the liquid dispensing float switch, and continue for a preset time, then stop dispensing liquid, close the pure water pumping diaphragm pump and the rear end solenoid valve 305, and then switch the rear end of the three-way solenoid valve 316 to the second Y-shaped three-way 317.

In addition, the above step further includes, before step S1:

detecting a liquid distribution float switch, wherein the liquid distribution float switch detects that the liquid level of a liquid distribution barrel is switched to be at a low liquid level from a high liquid level to a low liquid level, and continuously keeping the low liquid level state for 1s, the liquid level of a pure water cache barrel 303 in a pure water assembly and the liquid level of a concentrated liquid barrel in a concentrated liquid assembly need to be measured, and when the liquid level of the pure water cache barrel is not at the low level and the residual quantity of the concentrated liquid barrel is more than or equal to the quantity required by one-time liquid distribution, corresponding liquid distribution operation can be carried out, otherwise, prompting or alarming is suggested so that a user can add raw materials into the pure water cache barrel, or the system is provided with an automatic feeding device, and the feeding of the materials is realized through the automatic feeding device so as to realize continuous liquid distribution.

The above liquid preparation method with cleaning function can be applied to a liquid preparation device in an analyzer system, and the related valve control technology, liquid level detection technology, control operation by liquid level detection, cycle operation in a control program and the like involved in the liquid preparation method can all refer to the operation mode in the prior art, and the structures and methods of other parts refer to the prior art, and are not described herein again.

In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The liquid preparation device and method with cleaning function and the analyzer system provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A liquid preparation device with a cleaning function comprises a pure water assembly, a concentrated liquid assembly and a liquid preparation assembly, and is characterized in that an outlet of the concentrated liquid assembly and an outlet of the pure water assembly are connected to an inlet of a first pump body (308) through a valve body assembly, and an outlet of the first pump body (308) is connected with the liquid preparation assembly;

the pure water assembly comprises a second pump body, and an outlet of the second pump body is connected with an inlet of the first pump body (308) through a valve body assembly;

the pump further comprises a controller which is in signal connection with the first pump body (308), the second pump body (302) and the valve body assembly;

the first pump body (308) divides the total required amount of the concentrated liquid into N times, the concentrated liquid assembly supplies the concentrated liquid assembly to the liquid distribution assembly, when the concentrated liquid assembly supplies the concentrated liquid assembly, the controller controls the passage of the valve body assembly for communicating the concentrated liquid assembly with the first pump body (308) so that the first pump body (308) extracts a preset amount of concentrated liquid from the concentrated liquid assembly, after the first pump body (308) is controlled to extract the preset amount of concentrated liquid, the valve body assembly is controlled to conduct the passage of the pure water assembly and the liquid distribution assembly, the second pump body (302) is controlled so that pure water in the pure water assembly brings the concentrated liquid in the first pump body (308) into the liquid distribution assembly, and the first pump body (308) is controlled to reset during the concentrated liquid and the pure water are injected into the liquid distribution assembly;

the first pump body (308) is a plunger pump.

2. The fluid dispensing device with a cleaning function according to claim 1, wherein after the first pump body (308) is controlled to draw a predetermined amount of concentrated fluid, the valve body assembly is controlled to conduct the passage between the pure water assembly and the fluid dispensing assembly and simultaneously control the first pump body to reset.

3. The fluid dispensing device with a cleaning function according to claim 1, wherein the first pump body is controlled to reset after a certain time for controlling the second pump body (302) to enable pure water in the pure water assembly to bring concentrated fluid in the first pump body (308) into the fluid dispensing assembly.

4. The fluid dispensing device with a washing function according to claim 1, wherein a rear end solenoid valve (305) is arranged between the first pump body (308) and the fluid dispensing assembly, and the controller signal is further connected with the rear end solenoid valve (305).

5. The liquid dispensing device with a cleaning function according to claim 1, wherein the valve body assembly comprises a switching three-way electromagnetic valve (306), two ends of the switching three-way electromagnetic valve (306) are respectively and correspondingly connected to an outlet of the concentrated liquid assembly and an outlet of the pure water assembly to obtain the concentrated liquid and the pure water, and the other end of the switching three-way electromagnetic valve (306) is connected to an inlet of the first pump body (308) to deliver the concentrated liquid or the pure water to the first pump body (308);

the controller is used for controlling the switching three-way electromagnetic valve (306) to feed liquid from the outlet of the concentrated liquid component or the outlet of the pure water component and discharge the liquid to the first pump body (308).

6. The liquid dispensing device with cleaning function according to claim 1, wherein the valve body assembly comprises a three-way valve set, a front end solenoid valve (326) and a first Y-shaped three-way (322);

an inlet of the front-end electromagnetic valve (326) is connected with an outlet of the concentrated solution assembly, an outlet of the front-end electromagnetic valve (326) is connected with a first end of the first Y-shaped tee joint (322), three ends of the tee joint valve group are respectively connected with an outlet of the pure water assembly, a second end of the first Y-shaped tee joint (322) and an inlet of the solution preparation assembly, and a third end of the first Y-shaped tee joint (322) is connected with an inlet of the first pump body (308);

the controller is connected with the front end electromagnetic valve (326) and the three-way valve group and used for controlling the on-off of the front end electromagnetic valve (326) and controlling the flow direction of the pure water in the three-way valve group.

7. The liquid dispensing device with a cleaning function according to claim 6, wherein the three-way valve set is connected to a first end of a second Y-shaped three-way (317), an outlet of the first pump body (308) is connected to a second end of the second Y-shaped three-way (317) through a rear solenoid valve (305), and a third end of the second Y-shaped three-way (317) is connected to an inlet of the liquid dispensing assembly;

the rear end electromagnetic valve (305) is in signal connection with the controller.

8. The liquid dispensing device with a cleaning function according to any one of claims 1 to 7, wherein the liquid dispensing assembly comprises a liquid dispensing barrel (304) and a liquid dispensing detection device (313) connected with the controller and used for detecting the liquid level of the liquid dispensing barrel (304), the liquid dispensing detection device (313) is preset with a high liquid level and a low liquid level, and the difference of the volumes between the high liquid level and the low liquid level is a target total amount of cleaning liquid dispensed by the liquid dispensing barrel (304) of the liquid dispensing assembly;

when the liquid preparation detection device (313) detects that the liquid preparation device is at a low liquid level, the controller is used for controlling the concentrated liquid assembly, the pure water assembly and the first pump body (308) to work in a matched mode so as to supply mixed liquid to the liquid preparation barrel (304);

when the liquid distribution detection device (313) detects that the liquid distribution device is at a high liquid level, the controller is used for controlling the concentrated liquid assembly, the pure water assembly and the first pump body (308) to stop supplying liquid to the liquid distribution barrel (304).

9. The liquid dispensing device with a cleaning function according to claim 8, wherein the controller is configured to control the first pump (308) to divide the total required amount of the concentrate into N times to supply the concentrate to the dispensing barrel (304) when receiving the low liquid level signal, and before each supply, the controller controls the second pump to open, controls the valve body assembly to conduct the pure water assembly and the liquid dispensing assembly, and controls the first pump (308) to reset;

wherein N ═ lxx/I;

l is the target total amount of the cleaning liquid obtained by liquid preparation of the liquid preparation barrel of the liquid preparation assembly, X is the target liquid preparation proportion, and I is the amount of the concentrated liquid extracted by the first pump body (308) once.

10. The liquid dispensing apparatus with cleaning function according to claim 8, wherein the pure water unit comprises a pure water buffer tank (303) for storing pure water and a pure water level detecting means (314) for detecting a liquid level of the pure water buffer tank (303);

the concentrated solution assembly comprises a concentrated solution barrel (102) and a concentrated solution level detection device (107) for detecting the liquid level of the concentrated solution barrel;

pure water liquid level detection device (314) and concentrate liquid level detection device (107) all connect in the controller, the controller is used for join in marriage liquid detection device (313) and detect and be in low liquid level, just pure water buffer memory bucket (303) liquid level with when concentrate bucket liquid level satisfies the liquid requirement of joining in marriage, control concentrate subassembly pure water subassembly first pump body (308) cooperation work to join in marriage liquid bucket (304) and supply mixed liquid.

11. The dispensing device with rinsing function according to claim 10, wherein the controller controls the pure water buffer tank (303) to supply pure water to the first pump body (308) through the second pump body (302).

12. An analyzer system comprising a liquid dispensing device, wherein the liquid dispensing device is the liquid dispensing device with a cleaning function according to any one of claims 1 to 11.

13. A liquid preparation method with a cleaning function, which is characterized by being applied to the liquid preparation device with the cleaning function of any one of claims 1 to 11; the liquid preparation method comprises the following steps:

14. The liquid preparation method with a cleaning function according to claim 13, wherein the S1 includes:

s111, controlling the valve body assembly to conduct a passage from the pure water assembly to the first pump body, cutting off a passage from the concentrated liquid assembly to the first pump body, controlling the pure water assembly to supply pure water to the liquid distribution assembly through the first pump body, and simultaneously controlling the first pump body to reset; adding 1 to the current extraction times;

s121, judging whether the current extraction frequency is less than N +1 or not, wherein N is L multiplied by X/I;

if the number of times of extraction is less than N +1, executing S131;

if the number of times of extraction is equal to N +1, performing S2;

15. The liquid preparation method with a cleaning function according to claim 13, wherein the S1 includes:

wherein L is a target total amount of the cleaning liquid obtained by liquid preparation of a liquid preparation barrel of the liquid preparation assembly, X is a target liquid preparation proportion, and I is a predetermined amount of concentrated liquid extracted by the first pump body in a single time;