WO2026036529A1 - Automatic cleaning solution proportioning method and apparatus, and biochemical analysis system - Google Patents

Abstract

An automatic cleaning solution proportioning method and apparatus, and a biochemical analysis system. The method comprises: on the basis of a signal of a first floating ball assembly (310) in a concentrated cleaning solution tank (300), setting a liquid pump (700) to be in a pumping-enabled state or a pumping-disabled state; when the liquid pump (700) is in the pumping-enabled state, determining, on the basis of a signal of a second floating ball assembly (420) in a diluent tank (400), whether to start the liquid pump (700); when the liquid pump (700) is in a running state, mixing water in a water tank (200) and a concentrated cleaning solution in the concentrated cleaning solution tank (300) and pumping same into the diluent tank (400); and when the liquid pump (700) is in the running state, turning off the liquid pump (700) on the basis of a signal of a third floating ball assembly (430) in the diluent tank (400). By means of the definition of the three floating ball assemblies cooperating with the pumping-enabled or pumping-disabled state of the liquid pump (700), the method has the advantage of there being fewer components required to achieve a proportioning function, resulting in lower cost; moreover, the proportioning ratio is not affected by variations between instruments or components, thus ensuring that all instruments can prepare solutions of the same proportion by using the same parameters; in addition, automatic mixing is performed by means of the liquid pump (700), thereby ensuring the uniformity of the proportioned solution.

Description

Automatic cleaning solution preparation method, apparatus and biochemical analysis system Technical Field

This application relates to the field of biochemical analysis, and in particular to an automated cleaning solution preparation method, apparatus, and biochemical analysis system.

Background Technology

Biochemical analyzers in the in vitro diagnostics (IVD) industry are instruments that detect specific chemical components in body fluids using methods such as colorimetry and turbidimetry. To ensure the effectiveness of cleaning the cuvettes, these instruments must be cleaned with a cleaning solution.

Because a concentrated cleaning solution is used, the instrument's automatic dilution function is required. Automatic dilution involves mixing pure water and the replaced concentrated cleaning solution in a specific ratio using a series of components inside the instrument, achieving the desired consistency and avoiding manual operation and errors.

Specifically, traditional mixing systems use one diaphragm pump for water intake and another for adding cleaning solution, with multiple tanks and solenoid valves used for mixing and distribution. Furthermore, traditional systems use plunger pumps for metered addition and rely on float switches to control the mixing ratio. This leads to the following problems:

1. The proportioning system requires too many components to complete the required functions, resulting in a complex structure and increased application costs.

2. The quantitative addition ratio and the height control of the float switch prevent the proportions after mixing from being freely set;

3. The mixing ratio is affected by differences in instruments and pumps, which means that the mixing ratio needs to be calibrated separately, affecting the analysis efficiency;

4. If the solution is not uniform after mixing, the concentration may be too high in some areas, which may affect the analysis results.

Summary of the Invention

Therefore, it is necessary to provide an automatic cleaning solution preparation method, apparatus, and biochemical analysis system.

In one embodiment, an automatic cleaning fluid mixing method includes the following steps:

Based on the signal from the first float assembly in the concentrated cleaning fluid tank, the liquid pump is set to either a pumpable or non-pumpable state.

When the liquid pump is in a pumpable state, determine whether to start the liquid pump based on the signal from the second float assembly in the diluent tank;

With the liquid pump running, the water in the water tank and the concentrated cleaning solution in the concentrated cleaning solution tank are mixed and pumped into the dilution solution tank;

When the liquid pump is in the start state, the liquid pump is shut off according to the signal from the third float assembly in the diluent tank.

The above-described automatic cleaning fluid proportioning method, which uses three float assemblies in conjunction with the pumping status of the liquid pump, has the advantages of requiring fewer components and lower cost to achieve the proportioning function, and the proportioning ratio is not affected by the pumping status of the liquid pump. The differences in instruments or components can be mitigated by ensuring that all instruments use the same parameters to prepare solutions of the same proportion. Furthermore, the automatic mixing via a liquid pump ensures that the prepared solution is homogeneous.

In one embodiment, based on the signal from the first float assembly in the concentrated cleaning fluid tank, it is determined whether concentrated cleaning fluid needs to be replenished. If so, a signal is issued requesting the replenishment of concentrated cleaning fluid, and the liquid pump is set to a non-pumpable state; otherwise, the liquid pump is set to a pumpable state.

When the liquid pump is in a pumpable state, the system determines whether to add diluent cleaning solution based on the signal from the second float assembly in the diluent tank. If so, the liquid pump is started.

In one embodiment, based on the signal from the first float assembly in the concentrated cleaning fluid tank, the first switching valve is set to an openable state and an inaccessible state; wherein, the openable state of the first switching valve is associated with the pumpable state of the liquid pump, and the inaccessible state of the first switching valve is associated with the non-pumpable state of the liquid pump.

When the liquid pump is in the start state, the water in the water tank and the concentrated cleaning solution in the concentrated cleaning solution tank are respectively delivered to the liquid pump through the first switching valve.

In one embodiment, based on the signal from the first float assembly in the concentrated cleaning fluid tank, it is determined whether concentrated cleaning fluid needs to be replenished. If so, a signal is issued requesting the replenishment of concentrated cleaning fluid, and the first switching valve is set to an unopenable state; otherwise, the first switching valve is set to an openable state.

With the first switching valve in the openable state, the liquid pump is pre-started and runs for a first preset time based on the signal from the second float assembly in the diluent tank;

The first switching valve is activated to deliver the first liquid and run for a second preset time. Then the first switching valve is switched to deliver the second liquid and run for a third preset time, which is one cycle. The first liquid is either water in the water tank or concentrated cleaning liquid in the concentrated cleaning liquid tank, and the second liquid is the other liquid.

During the cycle, based on the signal from the third float assembly in the diluent tank, the first switching valve is closed after the current cycle is completed;

After closing the first switching valve, the liquid pump is turned off after a fourth preset time delay.

In one embodiment, after the liquid pump is pre-started and runs for a first preset time, and before the first switching valve is started and runs for a second preset time, the automatic cleaning fluid mixing method further includes the step of starting the second switching valve;

After closing the first switching valve, close the second switching valve, delay for a fourth preset time, and then shut down the liquid pump.

In one embodiment, an automatic cleaning fluid mixing device includes a water tank, a concentrated cleaning fluid tank, a diluent tank, and a liquid pump.

The water tank and the concentrated cleaning solution tank are respectively connected to the liquid pump via pipelines, and the liquid pump is connected via pipelines to... Through the diluent tank;

The automatic cleaning fluid mixing device is equipped with a first float assembly in the concentrated cleaning fluid tank, which is used to set the pumpable state and non-pumpable state of the liquid pump according to the signal of the first float assembly.

The automatic cleaning fluid mixing device is equipped with a second float assembly and a third float assembly in the diluent tank. The second float assembly and the third float assembly are respectively connected to the liquid pump through a circuit. The automatic cleaning fluid mixing device is used to start the liquid pump according to the signal of the second float assembly and to shut down the liquid pump according to the signal of the third float assembly.

In one embodiment, the automatic cleaning fluid mixing device further includes a first switching valve, wherein the water tank and the concentrated cleaning fluid tank are respectively connected to the first switching valve through pipelines, and the first switching valve is connected to the liquid pump through pipelines.

The automatic cleaning fluid proportioning device is used to start the first switching valve and the liquid pump according to the signal of the second float assembly, and is also used to shut down the first switching valve and the liquid pump according to the signal of the third float assembly;

The first float assembly is used to set the first switching valve to an openable state and an inaccessible state; wherein, the openable state of the first switching valve is associated with the pumpable state of the liquid pump, and the inaccessible state of the first switching valve is associated with the non-pumpable state of the liquid pump.

The liquid pump is used to pump water from the water tank and concentrated cleaning solution from the concentrated cleaning solution tank into the water tank through the first switching valve when the pump is in the start-up state.

In one embodiment, the automatic cleaning fluid mixing device further includes a second switching valve, wherein the first switching valve and the diluent tank are respectively connected to the liquid pump through the second switching valve via pipelines;

The second float assembly and the third float assembly are respectively connected to the second switching valve via lines. The second switching valve is connected to the liquid pump and the first switching valve via lines. The automatic cleaning fluid mixing device is used to start the first switching valve, the second switching valve and the liquid pump according to the signal of the second float assembly, and is also used to close the first switching valve, the second switching valve and the liquid pump according to the signal of the third float assembly.

In one embodiment, the liquid pump is a diaphragm pump;

Alternatively, the automatic cleaning fluid mixing device may include a fourth float assembly in the water tank, with the first float assembly and the fourth float assembly jointly setting the openable and inaccessible states of the first switching valve; or...

The automatic cleaning fluid mixing device also includes an alarm, which is connected to the first float assembly or the first switching valve. The alarm is used to issue a warning signal when the liquid pump is in a non-pumpable state; or...

The first switching valve, the second switching valve, and the liquid pump are configured to operate in conjunction; or...

The automatic cleaning fluid mixing device also includes a controller, which is connected to the first switching valve and the... The system comprises a second switching valve, the liquid pump, a first float assembly, a second float assembly, and a third float assembly. The first float assembly is connected to the first switching valve via the controller. The second float assembly and the third float assembly are respectively connected to the second switching valve and the liquid pump via the controller through wiring.

In one embodiment, a biochemical analysis system includes an analytical device and an automatic cleaning solution mixing device as described in any embodiment, wherein the analytical device obtains a diluent from the diluent tank of the automatic cleaning solution mixing device.

Attached Figure Description

To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

Figure 1 is a flowchart illustrating an embodiment of the automatic cleaning fluid mixing method described in this application.

Figure 2 is a schematic diagram of the structure of the first embodiment of the automatic cleaning fluid proportioning device described in this application.

Figure 3 is a schematic diagram of the structure of the second embodiment of the automatic cleaning fluid proportioning device described in this application.

Figure 4 is a structural schematic diagram of the third embodiment of the automatic cleaning fluid proportioning device described in this application.

Figure 5 is a structural schematic diagram of the fourth embodiment of the automatic cleaning fluid proportioning device described in this application.

Figure 6 is a structural schematic diagram of the fifth embodiment of the automatic cleaning fluid proportioning device described in this application.

Figure 7 is a structural schematic diagram of the sixth embodiment of the automatic cleaning fluid proportioning device described in this application.

Reference numerals in the attached drawings: Automatic cleaning fluid mixing device 100, water tank 200, fourth float assembly 240, concentrated cleaning fluid tank 300, first float assembly 310, low-level mixing 320, diluent tank 400, reserved position 410, second float assembly 420, third float assembly 430, first switching valve 500, second switching valve 600, liquid pump 700, wiring 800, first pipeline 810, second pipeline 820, third pipeline 830, fourth pipeline 840, fifth pipeline 850, alarm 900.

Detailed Implementation

To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or may have an intervening component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or may have an intervening component. The term "vertical" as used in this application's specification... The terms "of", "horizontal", "up", "down", "left", "right" and similar expressions are for illustrative purposes only and do not represent the only possible implementation.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in this application includes any and all combinations of one or more of the associated listed items.

This application discloses an automatic cleaning solution mixing method, apparatus, and biochemical analysis system, which includes some or all of the technical features of the following embodiments; that is, the automatic cleaning solution mixing apparatus and biochemical analysis system include some or all of the following structures. In one embodiment of this application, an automatic cleaning solution mixing method is shown in FIG1, which includes the following steps: setting the liquid pump to a pumpable state or a non-pumpable state according to the signal of the first float assembly in the concentrated cleaning solution tank; when the liquid pump is in the pumpable state, determining whether to start the liquid pump according to the signal of the second float assembly in the diluent tank; when the liquid pump is in the started state, mixing the water in the water tank and the concentrated cleaning solution in the concentrated cleaning solution tank and pumping it into the diluent tank; when the liquid pump is in the started state, turning off the liquid pump according to the signal of the third float assembly in the diluent tank. The above-mentioned automatic cleaning solution mixing method, through the limitation of the pumping state of the liquid pump in conjunction with three float components, has the advantages of requiring fewer components and lower cost to realize the mixing function. On the other hand, the mixing ratio is not affected by the differences in instruments or components, which can ensure that all instruments use the same parameters to mix the same solution ratio. Furthermore, the automatic mixing by the liquid pump ensures that the mixed solution is uniform.

The automatic cleaning solution mixing method, automatic cleaning solution mixing device, and biochemical analysis system are described in detail below with reference to Figures 1 to 7. In each embodiment, the automatic cleaning solution mixing method may also be referred to as an automatic cleaning solution mixing method. The automatic cleaning fluid proportioning device can also be called an automatic cleaning fluid proportioning device.

In one embodiment, an automatic cleaning fluid mixing method includes the following steps: S10, setting the liquid pump 700 to a pumpable or non-pumpable state based on the signal from the first float assembly 310 in the concentrated cleaning fluid tank 300; S20, when the liquid pump 700 is in the pumpable state, determining whether to start the liquid pump 700 based on the signal from the second float assembly 420 in the diluent tank 400; S30, when the liquid pump 700 is in the started state, mixing the water in the water tank 200 and the concentrated cleaning fluid in the concentrated cleaning fluid tank 300 and pumping them into the diluent tank 400; S40, when the liquid pump 700 is in the started state, turning off the liquid pump 700 based on the signal from the third float assembly 430 in the diluent tank 400. Before starting, the liquid pump 700 needs to perform a pre-judgment. If it is in a non-pumpable state, the liquid pump 700 cannot start. For example, if a start signal is triggered in this state, an alarm signal, i.e., a prompt signal, can be issued to remind the user to pay attention to the status of the concentrated cleaning solution tank 300. If it is in a pumpable state, the liquid pump 700 can start, mixing the water in the water tank 200 and the concentrated cleaning solution in the concentrated cleaning solution tank 300 and pumping them into the diluent tank 400. The pumping process completes the mixing of water and concentrated cleaning solution, as well as the proportion control. Moreover, by using three float components, namely the first float component 310, the second float component 420, and the third float component 430, in conjunction with the pumpability limitation of the liquid pump 700, it has the advantages of requiring fewer components and lower cost to achieve the proportioning function.

In the above embodiments, each float assembly is provided with a float and corresponding structural components; the first float assembly 310 serves as a low-level float for the concentrated cleaning fluid, the second float assembly 420 serves as a low-level float for the diluted cleaning fluid, and the third float assembly 430 serves as a high-level float for the diluted cleaning fluid. Those skilled in the art will understand that the above description of the first float assembly 310, the second float assembly 420, and the third float assembly 430 is merely an example.

To facilitate automated dilution in conjunction with automated processes, in one embodiment, the signal from the first float assembly 310 in the concentrated cleaning solution tank 300 determines whether the concentrated cleaning solution needs to be replenished. If so, a signal requesting replenishment is issued, and the liquid pump 700 is set to a non-pumpable state; otherwise, the liquid pump 700 is set to a pumpable state. While the liquid pump 700 is in a pumpable state, the signal from the second float assembly 420 in the dilution solution tank 400 determines whether the dilution cleaning solution needs to be replenished. If so, the liquid pump 700 is activated. That is, before replenishing the dilution cleaning solution, it is necessary to determine whether the concentrated cleaning solution is available. If it is available, the liquid pump 700 is activated to pump water from the water tank 200 and concentrated cleaning solution from the concentrated cleaning solution tank 300, thereby replenishing the dilution solution tank 400. This ensures that analytical equipment, such as an analyzer, can obtain the dilution cleaning solution from the dilution solution tank 400 and facilitates the completion of analytical work in conjunction with automated production lines.

In a practical implementation, two liquid pumps 700 can be used to pump water and concentrated cleaning fluid respectively. However, for the sake of simplifying the product structure, only one liquid pump 700 can be set to pump water and concentrated cleaning fluid simultaneously. In one embodiment, based on the signal from the first float assembly 310 in the concentrated cleaning fluid tank 300, the first switching valve 500 is set to an openable state and an inaccessible state. The system is configured to be in an openable state; wherein, the openable state of the first switching valve 500 is associated with the pumpable state of the liquid pump 700, and the non-openable state of the first switching valve 500 is associated with the non-pumpable state of the liquid pump 700; when the liquid pump 700 is in the start state, the water in the water tank 200 and the concentrated cleaning solution in the concentrated cleaning solution tank 300 are respectively delivered to the liquid pump 700 through the first switching valve 500. For example, the automatic mixing of the cleaning solution is achieved by adjusting the conduction time ratio of the concentrated cleaning solution in the concentrated cleaning solution tank 300 to the water in the water tank 200; as an example, the first switching valve 500 outputs a first conduction time for the concentrated cleaning solution in the concentrated cleaning solution tank 300 and a second conduction time for the water in the water tank 200. Under the same pumping pressure of the liquid pump 700, the ratio of the first conduction time to the second conduction time corresponds to the cleaning solution mixing ratio. This design has two advantages. First, it allows for the control of water and concentrated cleaning fluid pumping while simultaneously achieving the cleaning fluid ratio by switching the pipeline through the first switching valve 500, which can be used to select or cut off the pipeline. Second, it can also achieve the mixing of water and concentrated cleaning fluid during pipeline transportation and pumping, which is a win-win situation. Moreover, compared with traditional control methods, it has the advantages of requiring fewer components and lower cost to achieve the ratio function.

The following is a specific example. In one embodiment, based on the signal from the first float assembly 310 in the concentrated cleaning fluid tank 300, it is determined whether concentrated cleaning fluid needs to be replenished. If so, a signal requesting replenishment of concentrated cleaning fluid is issued, and the first switching valve 500 is set to a non-open state; otherwise, the first switching valve 500 is set to an open state. When the first switching valve 500 is in the open state, based on the signal from the second float assembly 420 in the diluent tank 400, the liquid pump 700 is pre-started and runs for a first preset time. The first switching valve 500 is then activated to deliver the first liquid and operate... The process involves performing a second preset time, then switching the first switching valve 500 to deliver the second liquid and running for a third preset time, constituting one cycle. The first liquid is either water in the water tank 200 or concentrated cleaning solution in the concentrated cleaning solution tank 300, and the second liquid is the other of the two. During the cycle, based on the signal from the third float assembly 430 in the diluent tank 400, after completing the current cycle, the first switching valve 500 is closed. After closing the first switching valve 500, a fourth preset time is delayed, and then the liquid pump 700 is turned off. For example, the first liquid is water in the water tank 200, and the second liquid is concentrated cleaning solution in the concentrated cleaning solution tank 300. In this embodiment, the ratio of the third preset time to the second preset time is the concentration ratio of the target diluted cleaning solution. The reverse is also possible. This design, with its pre-starting of the liquid pump 700 and operation for a first preset time, helps ensure the stable operation of the liquid pump 700; the third and second preset times facilitate the implementation or adjustment of the automatic cleaning solution mixing ratio; and the fourth preset time delay helps ensure the accuracy of the concentration of the diluted cleaning solution entering the dilution tank 400. Furthermore, this design ensures that the mixing ratio is unaffected by differences in instruments or components, guaranteeing that all instruments use the same parameters to prepare solutions with the same proportions.

To improve the mixing effect, in one embodiment, after the liquid pump 700 is pre-started and runs for a first preset time, Before activating the first switching valve 500 and running for a second preset time, the automatic cleaning fluid mixing method further includes the steps of: activating the second switching valve 600; closing the second switching valve 600 after closing the first switching valve 500, delaying for a fourth preset time, and then turning off the liquid pump 700. For example, the diluent tank 400 is connected to the second switching valve 600 via a pipeline. Activating the second switching valve 600 includes: activating the second switching valve 600 to deliver a third liquid and running for a fifth preset time, then switching the second switching valve 600 to deliver diluted cleaning fluid and running for a sixth preset time, as one mixing cycle; wherein the third liquid is a mixture of water and concentrated cleaning fluid, i.e., the liquid delivered from the first switching valve 500, and the diluted cleaning fluid is the liquid in the diluent tank 400. This design can greatly improve the mixing uniformity of the automatic cleaning fluid and further ensure the uniformity of the mixed solution. Furthermore, as described above, the automatic cleaning solution mixing method requires fewer components to achieve the mixing function, resulting in lower costs. The mixing ratio is unaffected by differences in instruments or components, ensuring that all instruments use the same parameters to produce the same solution ratio. Moreover, the design of the second switching valve 600 further enhances the automatic mixing effect, guaranteeing a uniform solution after mixing.

The following example illustrates the specific structural design of the automatic cleaning fluid proportioning method. In one embodiment, an automatic cleaning fluid proportioning device 100, as shown in Figure 2, includes a water tank 200, a concentrated cleaning fluid tank 300, a diluent tank 400, and a liquid pump 700. The water tank 200 and the concentrated cleaning fluid tank 300 are respectively connected to the liquid pump 700 via pipelines, and the liquid pump 700 is connected to the diluent tank 400 via pipelines. The automatic cleaning fluid proportioning device 100 has a first float assembly 310 in the concentrated cleaning fluid tank 300, used to set the appropriate balance according to the signal from the first float assembly 310. The liquid pump 700 is described in its pumpable and non-pumpable states. The automatic cleaning fluid proportioning device 100 has a second float assembly 420 and a third float assembly 430 in the diluent tank 400. The second float assembly 420 and the third float assembly 430 are respectively connected to the liquid pump 700 via a line 800. The automatic cleaning fluid proportioning device 100 is used to start the liquid pump 700 according to the signal from the second float assembly 420 and to shut down the liquid pump 700 according to the signal from the third float assembly 430. It is understood that the automatic cleaning fluid proportioning device 100 and the automatic cleaning fluid proportioning method have the same or similar design concepts and achieve the same or similar functions. Therefore, the automatic cleaning fluid proportioning device 100 also possesses the relevant beneficial technical effects of the automatic cleaning fluid proportioning method, which will not be elaborated here. Furthermore, those skilled in the art will understand that the automatic cleaning fluid proportioning device 100 also includes related pipeline connection structures, which will not be elaborated here.

For example, the automatic cleaning fluid proportioning method is implemented based on the automatic cleaning fluid proportioning device 100 of any embodiment; or, the automatic cleaning fluid proportioning device 100 is implemented using the automatic cleaning fluid proportioning method of any embodiment; it can also be understood that when the automatic cleaning fluid proportioning device 100 is applied, the relevant steps of the automatic cleaning fluid proportioning method of any embodiment can be used, and when the automatic cleaning fluid proportioning method is applied, it can be implemented based on the relevant structure of the automatic cleaning fluid proportioning device 100 of any embodiment.

In various embodiments, the liquid pump 700 is used to pump liquid, that is, the liquid pump 700 is a mechanical device for pumping liquid; as an example, the liquid pump 700 mixes the water in the water tank 200 and the concentrated cleaning solution in the concentrated cleaning solution tank 300 and pumps them into the diluent tank 400; in one embodiment, the liquid pump 700 is a positive displacement pump, as an example, the liquid pump 700 is a diaphragm pump; in other embodiments, the liquid pump 700 may also be a centrifugal pump or a plunger pump, etc.

In one embodiment, as shown in FIG2, the concentrated cleaning fluid tank 300 is full. The first float assembly 310 in the concentrated cleaning fluid tank 300 sends a concentrated cleaning fluid full signal or a concentrated cleaning fluid available signal, setting the liquid pump 700 to a pumpable state. For example, the first float assembly 310 sends a concentrated cleaning fluid full signal or a concentrated cleaning fluid available signal to the controller, which then sets the liquid pump 700 to a pumpable state. In contrast, as shown in FIG3, the concentrated cleaning fluid tank 300 is depleted. The first float assembly 310 in the concentrated cleaning fluid tank 300 sends a concentrated cleaning fluid empty signal or a concentrated cleaning fluid unavailable signal, setting the liquid pump 700 to a non-pumpable state. For example, the first float assembly 310 sends a concentrated cleaning fluid empty signal or a concentrated cleaning fluid unavailable signal to the controller, which then sets the liquid pump 700 to a non-pumpable state. For example, in an embodiment with a first switching valve 500, the first float assembly 310 sends a concentrated cleaning fluid full signal or a concentrated cleaning fluid available signal to the controller, thereby setting the liquid pump 700 to a pumpable state and the first switching valve 500 to an open state. That is, the open state of the first switching valve 500 is associated with the pumpable state of the liquid pump 700. Similarly, the first float assembly 310 sends a concentrated cleaning fluid empty signal or a concentrated cleaning fluid unavailable signal to the controller, thereby setting the liquid pump 700 to a non-pumpable state and the first switching valve 500 to a non-open state. That is, the non-open state of the first switching valve 500 is associated with the non-pumpable state of the liquid pump 700. For example, in an embodiment with a second switching valve 600, the second switching valve 600 is set to an openable state and an inaccessible state based on the signal from the first float assembly 310 in the concentrated cleaning fluid tank 300. The openable state of the second switching valve 600 is associated with the pumpable state of the liquid pump 700, and the inaccessible state of the second switching valve 600 is associated with the non-pumpable state of the liquid pump 700. In this way, associating the liquid pump 700 with the first switching valve 500 and the second switching valve 600 achieves on/off linkage, especially delayed switching, which is beneficial for obtaining accurate automatic cleaning fluid mixing results and uniformly diluted cleaning fluid.

When the second float assembly 420 in the diluent tank 400 sends a signal requesting replenishment of diluted cleaning fluid, considering the volume of the diluent tank 400 and the concentration requirements of the diluted cleaning fluid, the amount of concentrated cleaning fluid required in the concentrated cleaning fluid tank 300 for each automatic cleaning fluid preparation is approximately the same. For example, in one embodiment, as shown in FIG4, the concentrated cleaning fluid tank 300 is equipped with a low-level position 320 according to the volume of the diluent tank 400 and the concentration requirements of the diluted cleaning fluid. The first float assembly 310 or the fifth float assembly in the concentrated cleaning fluid tank 300 sends a request to replenish concentrated cleaning fluid when it moves to the low-level position 320. The signal for reducing the concentration of cleaning fluid is received. At this time, it is not necessary to set the liquid pump 700 to a non-pumpable state, and it is not necessary to issue a signal requesting replenishment of concentrated cleaning fluid when it floats to the low position 320. For example, during control judgment, the concentrated cleaning fluid tank 300 is usually full or meets the requirements during system operation, as shown in Figure 5. Therefore, the first float assembly 310 or the fifth float assembly in the concentrated cleaning fluid tank 300 issues a signal requesting replenishment of concentrated cleaning fluid when it reaches the low position 320 for the first time or an odd number of times. After replenishment, the first float assembly 310 or the fifth float assembly in the concentrated cleaning fluid tank 300 does not need to issue a signal requesting replenishment of concentrated cleaning fluid when it reaches the low position 320 for the second time or an even number of times. For example, these signals can first be sent to the controller, and then forwarded by the controller to the liquid pump 700 and/or the first switching valve 500, etc. For example, the concentrated cleaning fluid in the concentrated cleaning fluid tank 300 in the low-level position 320 is set according to the product of the maximum concentration of the diluted cleaning fluid and the volume of the diluted fluid tank 400, so that when the first float assembly 310 or the fifth float assembly in the concentrated cleaning fluid tank 300 moves down to the low-level position 320 and sends a signal to replenish the concentrated cleaning fluid, it can still meet the need to supply diluted cleaning fluid once more. This design can be combined with automatic or manual supply to achieve seamless connection and meet the requirements of automatic analysis for continuous production.

In one embodiment, as shown in Figures 2 and 3, the automatic cleaning fluid proportioning device 100 further includes a first switching valve 500. The water tank 200 and the concentrated cleaning fluid tank 300 are respectively connected to the first switching valve 500 via pipelines. The first switching valve 500 is connected to the liquid pump 700 via pipelines. The automatic cleaning fluid proportioning device 100 is used to activate the first switching valve 500 and the liquid pump 700 according to the signal from the second float assembly 420, and is also used to deactivate the first switching valve 500 and the liquid pump 700 according to the signal from the third float assembly 430. A first switching valve 500 and a liquid pump 700; a first float assembly 310 is used to set the first switching valve 500 to an openable state and an inaccessible state; wherein, the openable state of the first switching valve 500 is associated with the pumpable state of the liquid pump 700, and the inaccessible state of the first switching valve 500 is associated with the inaccessible state of the liquid pump 700; the liquid pump 700 is used, in the start-up state, to pump water from the water tank 200 and concentrated cleaning solution from the concentrated cleaning solution tank 300 through the first switching valve 500. As mentioned above, by controlling the switching and on/off state of the first switching valve 500, the accuracy of the automatic cleaning solution mixing ratio can be further ensured.

When the liquid pump 700 is running, and the diluent tank 400 is nearly full, the liquid pump 700 is shut off based on the signal from the third float assembly 430 in the diluent tank 400. In embodiments with a first switching valve 500, the first switching valve 500 can be shut off simultaneously or sequentially. Similarly, in embodiments with a second switching valve 600, the second switching valve 600 can be shut off simultaneously or sequentially. As an example, the first switching valve 500, the second switching valve 600, and the liquid pump 700 are linked; the second switching valve 600 can be started simultaneously or delayed when the liquid pump 700 starts, and/or the first switching valve 500 can be started simultaneously or delayed when the second switching valve 600 starts; the reverse is also possible.

To prevent the diluted cleaning solution from overflowing the diluent tank 400, the diluent tank 400 is provided with a reserved position 410. When the third float assembly 430 in the diluent tank 400 floats to the reserved position 410, it sends a shut-off signal to turn off the liquid pump 700. For example, the shut-off signal is sent to the controller, which then shuts off the liquid pump 700. In embodiments with a first switching valve 500, the first switching valve 500 can be shut off simultaneously or sequentially. Similarly, in embodiments with a second switching valve 600, the second switching valve 600 can be shut off simultaneously or sequentially. When the third float assembly 430 in the diluent tank 400 moves down to the reserved position 410, it does not need to send a shut-off signal. For example, the remaining volume of the diluent tank 400 at the reserved position 410 is greater than or equal to the volume of one mixing cycle of water in the water tank 200 and concentrated cleaning solution in the concentrated cleaning solution tank 300. That is, it satisfies the requirement that when the diluted cleaning solution obtained in the current cycle reaches the reserved position 410, the remaining volume of the diluent tank 400 at the reserved position 410 can accommodate the remaining water and concentrated cleaning solution from the current cycle. As an example, during control judgment, the upward or downward movement state of the first float assembly 310, the third float assembly 430, or the fifth float assembly can be determined by the conduction and disconnection of two adjacent circuits. This design helps to avoid overflow due to excessive pumping while ensuring the amount of diluted cleaning solution in the diluent tank 400 is maintained as much as possible.

In one embodiment, the automatic cleaning fluid proportioning device 100 further includes a second switching valve 600. The first switching valve 500 and the diluent tank 400 are respectively connected to the liquid pump 700 via pipelines through the second switching valve 600. The second float assembly 420 and the third float assembly 430 are respectively connected to the second switching valve 600 via lines 800, and the second switching valve 600 is connected to the liquid pump 700 and the first switching valve 500 via lines 800. The automatic cleaning fluid proportioning device 100 is used to activate the first switching valve 500, the second switching valve 600, and the liquid pump 700 according to the signal from the second float assembly 420, and is also used to close the first switching valve 500, the second switching valve 600, and the liquid pump 700 according to the signal from the third float assembly 430. As mentioned above, controlling the switching and opening/closing of the second switching valve 600 helps to improve the uniformity of the diluted cleaning fluid.

Considering that the water in the water tank 200 may be insufficient due to various factors, in one embodiment, as shown in Figure 6, the automatic cleaning fluid mixing device 100 is equipped with a fourth float assembly 240 in the water tank 200. The first float assembly 310 and the fourth float assembly 240 jointly set the openable and inaccessible states of the first switching valve 500; that is, the openable and inaccessible states of the first switching valve 500 are jointly set by the signals of the first float assembly 310 and the fourth float assembly 240. For example, based on the signal of the first float assembly 310 in the concentrated cleaning fluid tank 300, it is determined that there is no need to add concentrated cleaning fluid to the concentrated cleaning fluid tank 300, and based on the signal of the fourth float assembly 240 in the water tank 200, it is determined that there is no need to add water to the water tank 200, and the first switching valve 500 is set to the openable state; it is determined that there is a need to add concentrated cleaning fluid to the concentrated cleaning fluid tank 300, or to add water to the water tank 200. In tank 200, the first switching valve 500 is set to an inoperable state. This design further ensures the accuracy of the concentration of the diluted cleaning solution obtained through automatic proportioning.

To facilitate the replenishment of water in the water tank 200 and/or concentrated cleaning solution in the concentrated cleaning solution tank 300, in one embodiment, as shown in FIG7, the automatic cleaning solution mixing device 100 further includes an alarm 900. The alarm 900 is connected to the first float assembly 310 or the first switching valve 500, and is used to issue a warning signal when the liquid pump 700 is in a non-pumpable state. The warning signal includes, but is not limited to, sound, flashing lights, or information.

To facilitate effective control, the automatic cleaning fluid proportioning device 100 further includes a controller. The controller is connected to the first switching valve 500, the second switching valve 600, the liquid pump 700, the first float assembly 310, the second float assembly 420, and the third float assembly 430. The first float assembly 310 is connected to the first switching valve 500 via the controller. The second float assembly 420 and the third float assembly 430 are respectively connected to the second switching valve 600 and the liquid pump 700 via lines 800 through the controller. For example, in an embodiment with a fourth float assembly 240, the controller is also connected to the fourth float assembly 240. The implementation of the controller is not limited, as long as it can receive and send information, and can independently or in conjunction with other components implement electrical signal control.

In one embodiment, a biochemical analysis system includes an analytical device and an automatic cleaning solution mixing device 100 as described in any embodiment. The analytical device obtains a diluent from a diluent tank 400 of the automatic cleaning solution mixing device 100. It is understood that since the biochemical analysis system includes the automatic cleaning solution mixing device 100 as described in any embodiment, the biochemical analysis system also possesses the relevant beneficial technical effects of the automatic cleaning solution mixing method, which will not be elaborated upon here.

In one embodiment, referring to Figures 1 to 7, the automatic cleaning solution mixing method, apparatus, and biochemical analysis system are further illustrated. The automatic cleaning solution mixing apparatus 100 includes a first switching valve 500, a second switching valve 600, a liquid pump 700, a third float assembly 430, a second float assembly 420, a first float assembly 310, and pipeline connectors, etc. In this embodiment, the liquid pump 700 is a diaphragm pump.

The first switching valve 500 controls the switching between water and cleaning solution during the mixing process; the second switching valve 600 controls the switching between the mixing and blending functions; the liquid pump 700 provides power to the entire automatic cleaning solution mixing device 100; the third float assembly 430 serves as the signal for ending the mixing process; the second float assembly 420 serves as the signal for starting the mixing process; and the first float assembly 310 serves as the pre-signal for starting the mixing process. The mixing process is illustrated below.

First, it is determined whether the first float assembly 310 is in an empty signal state. If it is, the user is prompted to replace the concentrated cleaning solution, and the mixing process is not initiated. If the first float assembly 310 is in a full signal state, and an empty signal is detected by the second float assembly 420, the mixing process is started.

The diaphragm pump starts first, and after time T1, the second switching valve 600 opens; time T1 forms the opening time of the second switching valve 600. The delay is to wait for the diaphragm pump output flow to stabilize; the diaphragm pump can run dry without water.

Then, the first switching valve 500 can be opened directly or delayed to enter the circulation replenishment step: the first switching valve 500 is input with water for time T2, and then the first switching valve 500 switches to input concentrated cleaning solution for time T3. The ratio of T3 to T2 is the target mixing ratio, which allows for convenient control of the mixing ratio through time.

Repeat the replenishment cycle until the third float assembly 430 is detected to trigger a full signal. At this point, wait for the last replenishment cycle to complete and close the second switching valve 600. The purpose of waiting for the last replenishment cycle to complete is to ensure the accuracy of the last mixing ratio. At the same time, the diluent tank 400 has a certain margin above the position where the third float assembly 430 triggers a full signal to ensure that it will not overflow.

Wait for time T4, then turn off the liquid pump at 700 rpm. The mixing is complete. Waiting for time T4 ensures the cleaning solution is thoroughly mixed. This design uses a single diaphragm pump as the power source for both the inlet water and the concentrated cleaning solution, avoiding the influence of different pumps on the ratio. It requires fewer components to achieve the mixing function, resulting in lower costs. The mixing ratio can be freely set via T3/T2. The ratio is unaffected by differences in instruments, pumps, or components, as the same pump delivers both the cleaning solution and water, ensuring a stable ratio and guaranteeing that all instruments use the same parameters to produce the same solution ratio. It also features automatic mixing to ensure the mixed solution is homogeneous.

As an example and not a limitation, the T1 time is approximately 0.5 seconds. The T2 and T3 times can be determined according to the dilution ratio. For example, for shorter times, 1 or 2 seconds can be used; the T4 time can be 30 seconds or other times.

In other embodiments, two diaphragm pumps can be used to control the injection of concentrated cleaning solution and water respectively; alternatively, a pneumatic pump or plunger pump can be used to provide power for the mixing process, but the cost is relatively high. Other embodiments follow the same principle and will not be elaborated further.

It should be noted that other embodiments of this application also include an automatic cleaning fluid mixing method, apparatus, and biochemical analysis system formed by combining the technical features of the above embodiments.

The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims (10)

An automatic cleaning fluid mixing method, characterized by comprising the following steps: Based on the signal from the first float assembly (310) in the concentrated cleaning fluid tank (300), the liquid pump (700) is set to a pumpable state or a non-pumpable state. When the liquid pump (700) is in a pumpable state, the system determines whether to start the liquid pump (700) based on the signal from the second float assembly (420) in the diluent tank (400); With the liquid pump (700) in the start state, the water in the water tank (200) and the concentrated cleaning solution in the concentrated cleaning solution tank (300) are mixed and pumped into the dilution solution tank (400); When the liquid pump (700) is in the start state, the liquid pump (700) is turned off according to the signal from the third float assembly (430) in the diluent tank (400). According to the automatic cleaning fluid mixing method of claim 1, the method is characterized in that, based on the signal of the first float assembly (310) in the concentrated cleaning fluid tank (300), it is determined whether concentrated cleaning fluid needs to be added. If so, a signal is issued to request the addition of concentrated cleaning fluid, and the liquid pump (700) is set to a non-pumpable state; otherwise, the liquid pump (700) is set to a pumpable state. When the liquid pump (700) is in a pumpable state, it is determined whether the diluted cleaning solution needs to be replenished based on the signal from the second float assembly (420) in the diluent tank (400). If so, the liquid pump (700) is started. According to the automatic cleaning fluid proportioning method of claim 1, the first switching valve (500) is set to an openable state and an inaccessible state based on the signal from the first float assembly (310) in the concentrated cleaning fluid tank (300); wherein the openable state of the first switching valve (500) is associated with the pumpable state of the liquid pump (700), and the inaccessible state of the first switching valve (500) is associated with the non-pumpable state of the liquid pump (700). When the liquid pump (700) is in the start state, the water in the water tank (200) and the concentrated cleaning solution in the concentrated cleaning solution tank (300) are respectively delivered to the liquid pump (700) through the first switching valve (500). According to the automatic cleaning fluid mixing method of claim 3, the method is characterized in that, based on the signal of the first float assembly (310) in the concentrated cleaning fluid tank (300), it is determined whether concentrated cleaning fluid needs to be added. If so, a signal is issued to request the addition of concentrated cleaning fluid, and the first switching valve (500) is set to an unopenable state; otherwise, the first switching valve (500) is set to an openable state. With the first switching valve (500) in the openable state, the liquid pump (700) is pre-started and runs for a first preset time according to the signal from the second float assembly (420) in the diluent tank (400); The first switching valve (500) is activated to deliver the first liquid and run for a second preset time. Then the first switching valve (500) is switched to deliver the second liquid and run for a third preset time, which is one cycle. The first liquid is either water in the water tank (200) or concentrated cleaning liquid in the concentrated cleaning liquid tank (300), and the second liquid is the other one. During the cycle, based on the signal from the third float assembly (430) in the diluent tank (400), after the current cycle is completed, the first switching valve (500) is closed; After closing the first switching valve (500), the liquid pump (700) is turned off after a fourth preset time delay. According to claim 4, the automatic cleaning fluid mixing method is characterized in that, after the liquid pump (700) is pre-started and runs for a first preset time, and before the first switching valve (500) is started and runs for a second preset time, the automatic cleaning fluid mixing method further includes the step of starting the second switching valve (600). After closing the first switching valve (500), close the second switching valve (600), delay for a fourth preset time, and then turn off the liquid pump (700). An automatic cleaning fluid mixing device (100) is characterized in that it includes a water tank (200), a concentrated cleaning fluid tank (300), a diluent tank (400), and a liquid pump (700). The water tank (200) and the concentrated cleaning solution tank (300) are respectively connected to the liquid pump (700) through pipelines, and the liquid pump (700) is connected to the diluent tank (400) through pipelines. The automatic cleaning fluid mixing device (100) is provided with a first float assembly (310) in the concentrated cleaning fluid tank (300), which is used to set the pumpable state and non-pumpable state of the liquid pump (700) according to the signal of the first float assembly (310). The automatic cleaning fluid mixing device (100) is provided with a second float assembly (420) and a third float assembly (430) in the diluent tank (400). The second float assembly (420) and the third float assembly (430) are respectively connected to the liquid pump (700) through a line (800). The automatic cleaning fluid mixing device (100) is used to start the liquid pump (700) according to the signal of the second float assembly (420) and to shut down the liquid pump (700) according to the signal of the third float assembly (430). The automatic cleaning fluid proportioning device (100) according to claim 6 is characterized in that the automatic cleaning fluid proportioning device (100) further includes a first switching valve (500), the water tank (200) and the concentrated cleaning fluid tank (300) are respectively connected to the first switching valve (500) through pipelines, and the first switching valve (500) is connected to the liquid pump (700) through pipelines. The automatic cleaning fluid mixing device (100) is used to start the first switching valve (500) and the liquid pump (700) according to the signal of the second float assembly (420), and is also used to close the first switching valve (500) and the liquid pump (700) according to the signal of the third float assembly (430). The first float assembly (310) is used to set the first switching valve (500) to an openable state and an inaccessible state; The openable state of the first switching valve (500) is associated with the pumpable state of the liquid pump (700). The inability to open the valve (500) is associated with the inability to pump the liquid pump (700). The liquid pump (700) is used to pump water in the water tank (200) and concentrated cleaning solution in the concentrated cleaning solution tank (300) through the first switching valve (500) when the pump is in the start-up state. The automatic cleaning fluid proportioning device (100) according to claim 7 is characterized in that the automatic cleaning fluid proportioning device (100) further includes a second switching valve (600), and the first switching valve (500) and the diluent tank (400) are respectively connected to the liquid pump (700) through the second switching valve (600) via pipelines; The second float assembly (420) and the third float assembly (430) are respectively connected to the second switching valve (600) via a line (800). The second switching valve (600) is connected to the liquid pump (700) and the first switching valve (500) via a line (800). The automatic cleaning fluid mixing device (100) is used to start the first switching valve (500), the second switching valve (600) and the liquid pump (700) according to the signal of the second float assembly (420), and is also used to close the first switching valve (500), the second switching valve (600) and the liquid pump (700) according to the signal of the third float assembly (430). The automatic cleaning fluid proportioning device (100) according to claim 8 is characterized in that the liquid pump (700) is a diaphragm pump; or, The automatic cleaning fluid mixing device (100) is equipped with a fourth float assembly (240) in the water tank (200). The first float assembly (310) and the fourth float assembly (240) jointly set the openable and non-openable states of the first switching valve (500); or, The automatic cleaning fluid mixing device (100) further includes an alarm (900), which is connected to the first float assembly (310) or the first switching valve (500). The alarm (900) is used to issue a warning signal when the liquid pump (700) is in a non-pumpable state; or, The first switching valve (500), the second switching valve (600), and the liquid pump (700) are linked together; or, the automatic cleaning fluid mixing device (100) further includes a controller, which is connected to the first switching valve (500), the second switching valve (600), the liquid pump (700), the first float assembly (310), the second float assembly (420), and the third float assembly (430), respectively. The first float assembly (310) is connected to the first switching valve (500) via the controller, and the second float assembly (420) and the third float assembly (430) are connected to the second switching valve (600) and the liquid pump (700) via the controller through lines (800), respectively. A biochemical analysis system, characterized in that it includes an analytical device and an automatic cleaning solution mixing device (100) as described in any one of claims 6 to 9, wherein the analytical device obtains a diluent from a diluent tank (400) of the automatic cleaning solution mixing device (100).