Performance testing device and method based on metering pump

Abstract

The embodiment of the invention discloses a performance testing device and method based on a metering pump, and relates to the technical field of equipment detection, the device comprises a gas path assembly, a liquid path assembly, a first gas pressure chamber, a second gas pressure chamber, a first container, a second container, a weighing unit and a metering pump to be tested; wherein the air path assembly is connected with the first air pressure chamber and the second air pressure chamber and is used for constructing a negative pressure environment of the first air pressure chamber and a positive pressure environment of the second air pressure chamber; one path of the to-be-tested constant displacement pump is communicated with the first container and the first air pressure chamber and sucks a reagent from the first container; the other path of the metering pump to be tested is communicated with a second air pressure chamber and a second container, and the reagent sucked from the first container is discharged into the container; the weighing unit is connected with the second container and used for measuring the weight of the reagent in the second container, the used device is simple in composition and low in cost, and the performance of the to-be-tested metering pump can be accurately judged according to the weight of the reagent in the second container and the positive and negative pressure provided by the to-be-tested metering pump.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment detection, and in particular to a performance testing device and method based on a metering pump. Background Art

[0002] Dosing pumps are widely used in chemical, pharmaceutical, food processing and other industries to accurately deliver fixed volumes of fluids. The performance of dosing pumps is crucial to the quality control of the entire production process because it directly affects the consistency and final quality of the product. The dosing pump performance test solutions currently on the market mainly focus on the determination of flow rate and the metering accuracy of the pump.

[0003] However, the existing testing schemes have some shortcomings. First, the testing equipment is often complex and expensive, which limits the comprehensive evaluation of the performance of quantitative pumps by small and medium-sized enterprises; second, the current testing methods require high operating skills, which can easily affect the accuracy of the test results due to improper operation; third, some testing methods have limitations in simulating actual working conditions and cannot fully reflect the performance of the pump in a specific working environment.

[0004] In addition, with the development of industrial production and the increasing requirements for precise metering, traditional quantitative pump performance test methods are difficult to meet the more stringent test accuracy and repeatability requirements. For example, for the quantitative delivery of high-viscosity fluids or fluids containing suspended particles, existing test schemes often cannot provide effective evaluation methods. Therefore, the development of a simple, low-cost, and highly accurate quantitative pump performance test scheme has become an urgent need for the development of technology in this field. Summary of the invention

[0005] In view of this, one of the objectives of the present application is to provide a performance testing device and method based on a metering pump, which can at least solve some of the above-mentioned technical problems.

[0006] In a first aspect, an embodiment of the present application provides a performance testing device based on a metering pump, the method comprising:

[0007] An air circuit assembly, a liquid circuit assembly, a first air pressure chamber, a second air pressure chamber, a first container, a second container, a weighing unit and a quantitative pump to be tested; wherein,

[0008] The air circuit assembly is connected to the first air pressure chamber and the second air pressure chamber respectively, and is used to establish a negative pressure environment for the first air pressure chamber and a positive pressure environment for the second air pressure chamber;

[0009] The first container is used to contain a reagent;

[0010] The second container is used to collect the recovered reagent;

[0011] One path of the quantitative pump to be tested is connected to the first container and the first air pressure chamber through the liquid path component, and is used to draw the reagent from the first container when the first air pressure chamber provides negative pressure;

[0012] Another path of the quantitative pump to be tested is connected to the second air pressure chamber and the second container through the liquid path component, and is used to discharge the reagent sucked from the first container to the container when the second air pressure chamber provides positive pressure;

[0013] The weighing unit is connected to the second container and is used to measure the weight of the reagent in the second container.

[0014] In a possible implementation, the gas circuit assembly includes an air pump, a first switch, and a second switch; wherein,

[0015] One path of the air pump is connected to the first air pressure chamber via the first switch, and is used to construct a negative pressure environment of the first air pressure chamber in a first conduction state;

[0016] Another path of the air pump is connected to the second air pressure chamber via the second switch, so as to construct a positive pressure environment of the second air pressure chamber in the second conduction state.

[0017] In a possible implementation, the gas circuit assembly further includes:

[0018] The third switch is arranged between the quantitative pump to be tested and the first air pressure chamber and the second air pressure chamber, and is used for connecting the quantitative pump to be tested and the first air pressure chamber in a first state, and connecting the quantitative pump to be tested and the second air pressure chamber in a second state.

[0019] In a possible implementation, the fluid circuit assembly includes:

[0020] The fourth switch is arranged between the quantitative pump to be tested and the first container and the second container, and is used to connect the quantitative pump to be tested and the first container in the third state, and connect the quantitative pump to be tested and the second container in the fourth state.

[0021] In a possible implementation manner, the gas circuit assembly further includes a fifth switch and a sixth switch; wherein,

[0022] The fifth switch is connected to the first air pressure chamber and is used to restore the pressure of the first air pressure chamber to an initial state in a conducting state;

[0023] The sixth switch is connected to the second air pressure chamber, and is used to restore the pressure of the second air pressure chamber to an initial state in a conducting state.

[0024] In a second aspect, an embodiment of the present application provides a performance testing method based on a metering pump, which is applied to the performance testing device based on a metering pump in the first aspect, and the method includes:

[0025] Constructing a negative pressure environment in the first air pressure chamber and a positive pressure environment in the second air pressure chamber;

[0026] In the first conduction state, the first air pressure chamber is in a negative pressure environment, and the quantitative pump to be tested quantitatively draws the reagent in the first container;

[0027] In the second on state, the second air pressure chamber is in a positive pressure environment, and the quantitative pump to be tested discharges the reagent sucked from the first container into the second container;

[0028] Obtaining weighing data of the reagent in the second container;

[0029] The performance test result of the quantitative pump to be tested is determined according to the negative pressure data of the negative pressure environment of the first air pressure chamber and the weighing data of the reagent in the second container.

[0030] In a possible implementation, the method further includes:

[0031] Controlling the on-off between the first switch and the air pump, and when the first switch and the air pump are in conduction, the first air pressure chamber is constructed into a negative pressure environment of the first air pressure chamber;

[0032] The on-off between the second switch and the air pump is controlled, and when the second switch and the air pump are in conduction, the second air pressure chamber is constructed into a positive pressure environment of the second air pressure chamber.

[0033] In a possible implementation, the method further includes:

[0034] Controlling the third switch to be in a first state, the first air pressure chamber and the quantitative pump to be tested are connected, and the quantitative pump to be tested is provided with a first working pressure;

[0035] The third switch is controlled to be in a second state, the second air pressure chamber and the quantitative pump to be tested are connected, and the quantitative pump to be tested is provided with a second working pressure.

[0036] In a possible implementation, the method further includes:

[0037] The fourth switch is controlled to be in a third state, the quantitative pump to be tested and the first container are connected, and under the action of the first working pressure, the reagent in the first container is quantitatively sucked into the quantitative pump to be tested;

[0038] The fourth switch is controlled to be in a fourth state, the quantitative pump to be tested and the second container are connected, and under the action of the second working pressure, the reagent sucked from the first container is discharged into the second container.

[0039] In a possible implementation, the method further includes:

[0040] The fifth switch and the sixth switch are respectively controlled to be in the fourth state, and the pressures in the first pressure chamber and the second pressure chamber are restored to the initial states before the pressure is built up.

[0041] The performance test device based on the quantitative pump provided in the embodiment of the present application includes an air circuit component, a liquid circuit component, a first air pressure chamber, a second air pressure chamber, a first container, a second container, a weighing unit and a quantitative pump to be tested; wherein the air circuit component is connected to the first air pressure chamber and the second air pressure chamber respectively, and is used to construct a negative pressure environment for the first air pressure chamber and a positive pressure environment for the second air pressure chamber. The first container is used to hold the reagent, and the second container is used to collect the recovered reagent. One way of the quantitative pump to be tested is connected to the first container and the first air pressure chamber, and is used to draw the reagent from the first container when the first air pressure chamber provides a negative pressure. The other way of the quantitative pump to be tested is connected to the second air pressure chamber and the second container, and is used to discharge the reagent drawn from the first container to the container when the second air pressure chamber provides a positive pressure. The weighing unit is connected to the second container, and is used to measure the weight of the reagent in the second container. The device used is simple in composition and low in cost. The performance of the quantitative pump to be tested can be accurately judged by the weight of the reagent in the second container and the positive and negative pressures provided to the quantitative pump to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. It should be understood that the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of the structure of a performance testing device based on a metering pump provided in an embodiment of the present application;

[0044] Figure 2 A method flow chart of a performance testing method based on a quantitative pump provided in this application;

[0045] Figure 3 A diagram of the internal structure of a computer device provided in an embodiment of the present application.

[0046] Description of reference numerals:

[0047] A performance testing device 100 based on a quantitative pump, a gas circuit assembly 110, and a liquid circuit assembly 120;

[0048] The first air pressure chamber P1, the second air pressure chamber P2, the first container B1, the second container B2, the weighing unit X, the quantitative pump to be tested PD pump, the air pump Pump, the first switch SV1, the second switch SV2, the third switch SV3, the fourth switch SV4, the fifth switch SV5, the sixth switch SV6, the first pressure gauge PG1, and the second pressure gauge PG2. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0053] In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0054] In the description of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0055] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0056] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.

[0057] See also Figure 1 , Figure 1 A schematic structural diagram of a performance testing device based on a metering pump provided in an embodiment of the present application, and each component of the device will be introduced in detail below.

[0058] The performance testing device 100 based on the metering pump comprises:

[0059] The gas circuit assembly 110, the liquid circuit assembly 120, the first air pressure chamber P1, the second air pressure chamber P2, the first container B1, the second container B2, the weighing unit X and the quantitative pump PD pump to be tested; wherein,

[0060] The air circuit assembly 110 is connected to the first air pressure chamber P1 and the second air pressure chamber P2 respectively, and is used to establish a negative pressure environment for the first air pressure chamber P1 and a positive pressure environment for the second air pressure chamber P2;

[0061] A first container B1, used for containing a reagent;

[0062] A second container B2, for collecting the recovered reagent;

[0063] One path of the quantitative pump PD pump to be tested is connected to the first container B1 and the first air pressure chamber P1 through the liquid path component 120, and is used to draw the reagent from the first container B1 when the first air pressure chamber P1 provides negative pressure;

[0064] The other path of the quantitative pump to be tested PD pump is connected to the second air pressure chamber P2 and the second container B2 through the liquid path assembly 120, and is used to discharge the reagent sucked from the first container B1 to the container when the second air pressure chamber P2 provides positive pressure;

[0065] The weighing unit X is connected to the second container B2 and is used to measure the weight of the reagent in the second container B2.

[0066] The performance testing device 100 based on the metering pump in the embodiment of the present application can be regarded as a combination of a pneumatic control system and a hydraulic system, which can convert gas pressure into mechanical force and rotational force, and then combined with the hydraulic part formed by the metering pump PDpump to be tested, it mainly realizes the transfer of reagents from the first container B1 to the second container B2 through the gas circuit component 110 and the liquid circuit component 120, and finally completes the measurement of the weight of the reagent in the second container B2, thereby realizing the performance evaluation of the metering pump PD pump to be tested.

[0067] Specifically, in the performance testing device 100 based on the metering pump provided in the embodiment of the present application:

[0068] The air circuit component 110 can be regarded as an air pressure source and is the energy source of the performance testing device 100 based on the quantitative pump. Optionally, the air circuit component 110 in this embodiment includes an air pump Pump, which can be used to extract air or other gases in a closed container to create a vacuum environment inside the container, and can also be used to pressurize gas into the container to increase the pressure inside the container. The air pump Pump type in this embodiment includes any one of a vortex air pump Pump, a centrifugal fan, a screw air pump Pump and a root fan.

[0069] The liquid circuit assembly 120, including liquid circuit pipelines, etc., is mainly used to provide an environment for extracting and discharging reagents for the quantitative pump PD pump to be tested.

[0070] The first air pressure chamber P1 and the second air pressure chamber P2 can be used to store gas to ensure the stability of the gas source. According to actual needs, the first air pressure chamber P1 can be constructed as a negative pressure environment and the second air pressure chamber P2 can be constructed as a positive pressure environment, or the first air pressure chamber P1 can be constructed as a positive pressure environment and the second air pressure chamber P2 can be constructed as a negative pressure environment. In this embodiment, the first air pressure chamber P1 is constructed as a negative pressure environment and the second air pressure chamber P2 is constructed as a positive pressure environment.

[0071] The first container B1 and the second container B2 can be used to store reagents. The first container B1 and the second container B2 can be connected to the quantitative pump to be tested PD pump through a liquid pipeline. The quantitative pump to be tested PD pump can absorb reagents from the first container B1 and discharge them into the second container B2. In some embodiments, the first container B1 and the second container B2 can be selected as containers of the same model and with scales. The first container B1 and the second container B2 can be connected at the liquid pipeline to fill the connection gap with sealing materials such as sealing gaskets or sealants to ensure good sealing at the connection, thereby avoiding the volatilization of reagents affecting the accuracy and reliability of the test of the quantitative pump to be tested PD pump. Among them, the quantitative pump to be tested PD pump can absorb a certain amount of reagent from the first container B1 and discharge it into the second container B2 under the negative pressure provided by the first air pressure chamber P1 for a certain period of time and the positive pressure provided by the second air pressure chamber P2 for a certain period of time.

[0072] The weighing unit X can be used to obtain the weight of the reagent in the second container B2. Before the first discharge, there is no liquid in the second container B2. At this time, the weighing unit X only displays the weight of the second container B2, or the weight of the second container B2 and the tray placed under the second container B2. Each time the reagent is discharged into the second container B2, the weight displayed by the weighing unit X will change. The weight of the reagent discharged into the second container B2 can be obtained based on the weight before and after the change. The weighing unit X includes an analytical balance, which can also be called an analytical electronic balance or an analytical weighing instrument. It has the characteristics of high precision, high sensitivity and high stability, and weighs accurately, which can improve the accuracy and reliability of the performance test of the quantitative pump PD pump to be tested.

[0073] In addition, the device provided in this embodiment can be applied to the performance test of various types of metering pumps. Specifically, the metering pump to be tested PD pump in this embodiment is applicable to any of the dosing metering pumps, semiconductor metering pumps, and FMI metering pumps in the biomedical field. Of course, it can also be applied to other types of metering pumps, which will not be listed one by one here.

[0074] The performance test device based on the quantitative pump provided in the embodiment of the present application includes an air circuit component, a liquid circuit component, a first air pressure chamber, a second air pressure chamber, a first container, a second container, a weighing unit and a quantitative pump to be tested; wherein the air circuit component is connected to the first air pressure chamber and the second air pressure chamber respectively, and is used to construct a negative pressure environment for the first air pressure chamber and a positive pressure environment for the second air pressure chamber. The first container is used to hold the reagent, and the second container is used to collect the recovered reagent. One way of the quantitative pump to be tested is connected to the first container and the first air pressure chamber, and is used to draw the reagent from the first container when the first air pressure chamber provides a negative pressure. The other way of the quantitative pump to be tested is connected to the second air pressure chamber and the second container, and is used to discharge the reagent drawn from the first container to the container when the second air pressure chamber provides a positive pressure. The weighing unit is connected to the second container, and is used to measure the weight of the reagent in the second container. The device used is simple in composition and low in cost. The performance of the quantitative pump to be tested can be accurately judged by the weight of the reagent in the second container and the positive and negative pressures provided to the quantitative pump to be tested.

[0075] In a possible implementation, the gas circuit assembly 110 includes a first switch SV1 and a second switch SV2; wherein,

[0076] One path of the air pump Pump is connected to the first air pressure chamber P1 via the first switch SV1, and is used to establish a negative pressure environment of the first air pressure chamber P1 in the first conduction state;

[0077] Another path of the air pump Pump is connected to the second air pressure chamber P2 via the second switch SV2, so as to construct a positive pressure environment of the second air pressure chamber P2 in the second conducting state.

[0078] Specifically, the air pump Pump end connected to the first air pressure chamber P1 via the first switch SV1 is the air suction end of the air pump Pump. In the first conduction state, the air pump Pump is started and the first switch SV1 is opened, and the air pump Pump extracts air or other gas in the first air pressure chamber P1 to create a vacuum environment for the first air pressure chamber P1. Correspondingly, the air pump Pump end connected to the second air pressure chamber P2 via the second switch SV2 is the air outlet end of the air pump Pump. In the second conduction state, the air pump Pump is started and the second switch SV2 is opened, and the air pump Pump presses gas into the second air pressure chamber P2 to increase the pressure inside the second air pressure chamber P2.

[0079] Among them, the air pump Pump and the first switch SV1, the first switch SV1 and the first air pressure chamber P1, the air pump Pump and the second switch SV2, and the second switch SV2 and the second air pressure chamber P2 are all connected through pressure-building pipelines.

[0080] In some embodiments, the first switch SV1 and the second switch SV2 are both solenoid valve switches, the air suction end of the air pump Pump is connected to the common end of the first switch SV1, the normally closed end of the first switch SV1 is connected to the first air pressure chamber P1, and the first switch SV1 is powered on and opened, indicating that the normally open end of the first switch SV1 is connected to the first air pressure chamber P1. The air outlet end of the air pump Pump is connected to the common end of the second switch SV2, the normally closed end of the second switch SV2 is connected to the second air pressure chamber P2, and the second switch SV2 is powered on and opened, indicating that the normally open end of the second switch SV2 is connected to the second air pressure chamber P2.

[0081] In a possible implementation, the gas circuit assembly 110 further includes:

[0082] The third switch SV3 is provided between the quantitative pump to be tested PD pump and the first air pressure chamber P1 and the second air pressure chamber P2, and is used for connecting the quantitative pump to be tested PD pump and the first air pressure chamber P1 in the first state, and connecting the quantitative pump to be tested PD pump and the second air pressure chamber P2 in the second state.

[0083] Specifically, the quantitative pump to be tested PD pump includes an air chamber end, and different conduction states of the third switch SV3 determine whether the air chamber end of the quantitative pump to be tested PD pump is conducted with the first air pressure chamber P1 or the second air pressure chamber P2. In some embodiments, the third switch SV3 is a solenoid valve switch, the common end of the third switch SV3 is connected to the air chamber end of the quantitative pump to be tested PD pump, the normally open end of the third switch SV3 is connected to the first air pressure chamber P1, and the normally closed end of the third switch SV3 is connected to the second air pressure chamber P2. The first state indicates that the third switch SV3 is not energized, and the normally open end of the third switch SV3 is connected to the first air pressure chamber P1, and the second state indicates that the third switch SV3 is energized, and the normally closed end of the third switch SV3 is connected to the first air pressure chamber P1, and the normally open end of the third switch SV3 is connected to the second air pressure chamber P2.

[0084] In a possible implementation, the fluid circuit assembly 120 includes:

[0085] The fourth switch SV4 is provided between the quantitative pump PD pump to be tested and the first container B1 and the second container B2, and is used to conduct the quantitative pump PD pump to be tested and the first container B1 in the third state, and conduct the quantitative pump PD pump to be tested and the second container B2 in the fourth state.

[0086] Specifically, the quantitative pump to be tested PD pump includes a liquid chamber end, and different conduction states of the fourth switch SV4 determine whether the liquid chamber end of the quantitative pump to be tested PD pump is conducted with the first container B1 or the second container B2. In some embodiments, the fourth switch SV4 is a solenoid valve switch, the common end of the fourth switch SV4 is connected to the liquid chamber end of the quantitative pump to be tested PD pump, the normally open end of the fourth switch SV4 is connected to the first container B1, and the normally closed end of the fourth switch SV4 is connected to the second container B2. The third state indicates that the fourth switch SV4 is not energized, and the normally open end of the fourth switch SV4 is connected to the first container B1. The fourth state indicates that the fourth switch SV4 is energized, and the normally closed end of the fourth switch SV4 is connected to the first container B1, and the normally open end of the fourth switch SV4 is connected to the second container B2.

[0087] In a possible implementation, the gas circuit assembly 110 further includes a fifth switch SV5 and a sixth switch SV6; wherein,

[0088] The fifth switch SV5 is connected to the first air pressure chamber P1 and is used to restore the pressure of the first air pressure chamber P1 to an initial state in a conducting state;

[0089] The sixth switch SV6 is connected to the second air pressure chamber P2, and is used to restore the pressure of the second air pressure chamber P2 to an initial state when in a conducting state.

[0090] Specifically, the conduction state in this embodiment means that the fifth switch SV5 is powered on, the sixth switch SV6 is powered on, and the first air pressure chamber P1 and the second air pressure chamber P2 are both restored to the initial state, which is the state before pressure is built up. In some embodiments, the fifth switch SV5 and the sixth switch SV6 are both solenoid valve switches, specifically, the normally closed end of the fifth switch SV5 is connected to the first air pressure chamber P1, and the normally closed end of the sixth switch SV6 is connected to the second air pressure chamber P2. When the fifth switch SV5 is powered on, the normally open end of the fifth switch SV5 is connected to the first air pressure chamber P1, and when the sixth switch SV6 is powered on, the normally open end of the sixth switch SV6 is connected to the second air pressure chamber P2.

[0091] It should be noted that, in the process of completing the extraction and discharge of reagents by the metering pump PD pump to be tested and restoring the first air pressure chamber P1 and the second air pressure chamber P2 to their initial states, the power-on duration of the first switch SV1 is the same as the power-on duration of the fifth switch SV5, and the power-on duration of the second switch SV2 is the same as the power-on duration of the sixth switch SV6. In this way, the first air pressure chamber P1 and the second air pressure chamber P2 can be ensured to be in the same initial conditions in multiple tests, thereby improving the accuracy and reliability of the test.

[0092] In some embodiments, the on-off control of each switch in the above embodiments can be controlled manually or by an external controller, and the control method can be selected according to actual needs.

[0093] In some embodiments, the device further includes a first pressure gauge PG1 and a second pressure gauge PG2, wherein the first pressure gauge PG1 is used to monitor the pressure in the first pressure chamber P1, and the second pressure gauge PG2 is used to monitor the pressure in the second pressure chamber PG2.

[0094] In order to explain in detail the specific testing process of the performance testing device 100 based on the metering pump in the above embodiment, an example is given as follows:

[0095] Process 1: The air pump Pump is powered on and runs for 5 seconds, and the first switch SV1 is powered on for 5 seconds, and the pressure of the first air pressure chamber P1 can be built up to -35kpa through the suction end of the air pump Pump. At this time, the states of the third switch SV3 and the fourth switch SV4 are as follows:

[0096] The third switch SV3 is in the first state and is not powered on. The normally open end of the third switch SV3 is connected to the first air pressure chamber P1, and the common end of the third switch SV3 is connected to the air chamber end of the quantitative pump PD pump to be tested. The fourth switch SV4 is in the third state and is not powered on. The normally open end of the fourth switch SV4 is connected to the first container B1, and the common end of the fourth switch SV4 is connected to the liquid chamber end of the quantitative pump PDpump to be tested.

[0097] During this process, the metering pump to be tested PD pump draws the reagent in the first container B1 at a pressure of -35 kPa.

[0098] The second process: the air pump Pump is powered on and runs for 6s, and the second switch SV2 is powered on for 6s. The air outlet of the air pump Pump can build up a pressure of 42kpa for the second air pressure chamber P2. The fourth switch SV4 is powered on and runs for 2s. After the fourth switch SV4 is powered on for 0.1s, the third switch SV3 is powered on and runs for 2s. Referring to the first process, the quantitative pump PD pump to be tested discharges the reagent absorbed from the first container B1 into the second container B2 according to the pressure of 42kpa, and obtains the weighing data of the second container B2.

[0099] The third process: the fifth switch SV5 is powered on for 5s, and the sixth switch SV6 is powered on for 6s to release the pressure in the first pressure chamber P1 and the second pressure chamber P2 to ensure that the pressure of the first pressure chamber P1 is still -35kpa and the pressure of the second pressure chamber P2 is still 42kpa under the same power-on time next time, thereby ensuring that the pressure driving values ​​corresponding to the two pressure build-ups are the same.

[0100] The above three processes constitute one test, and the weight of the reagent in one second container B2 can be obtained. Repeat the above three processes 10 times to obtain the weight of the reagent in 10 second containers B2. The average of the 10 weights can be taken as the weight obtained by the final test. The weight obtained by the final test is then compared with the standard test comparison table to determine the performance test result of the metering pump PDpump to be tested. Specifically, the standard test comparison table includes the standard weight obtained under the same conditions as in the above example for qualified metering pumps. If the difference between the weight obtained by the final test and the standard weight is within the preset range, it means that the performance test result of the metering pump PD pump to be tested is qualified, otherwise the performance test result of the metering pump PD pump to be tested is unqualified.

[0101] It should be noted that, although the on-off duration of each switch and specific voltage building data are shown for illustrative purposes, different control timings can be set as needed, which is within the protection scope of the embodiments of the present application.

[0102] The performance test device based on the quantitative pump provided in the embodiment of the present application includes an air circuit component, a liquid circuit component, a first air pressure chamber, a second air pressure chamber, a first container, a second container, a weighing unit and a quantitative pump to be tested; wherein the air circuit component is connected to the first air pressure chamber and the second air pressure chamber respectively, and is used to construct a negative pressure environment for the first air pressure chamber and a positive pressure environment for the second air pressure chamber. The first container is used to hold the reagent, and the second container is used to collect the recovered reagent. One way of the quantitative pump to be tested is connected to the first container and the first air pressure chamber, and is used to draw the reagent from the first container when the first air pressure chamber provides a negative pressure. The other way of the quantitative pump to be tested is connected to the second air pressure chamber and the second container, and is used to discharge the reagent drawn from the first container to the container when the second air pressure chamber provides a positive pressure. The weighing unit is connected to the second container, and is used to measure the weight of the reagent in the second container. The device used is simple in composition and low in cost. The performance of the quantitative pump to be tested can be accurately judged by the weight of the reagent in the second container and the positive and negative pressures provided to the quantitative pump to be tested.

[0103] Corresponding to the above device embodiment, the present application also provides a performance testing method based on a quantitative pump, see Figure 2 , Figure 2 A method flow chart of a performance testing method based on a metering pump provided in an embodiment of the present application, and each implementation step of the method will be introduced in detail below.

[0104] S210, constructing a negative pressure environment of the first air pressure chamber P1 and a positive pressure environment of the second air pressure chamber P2.

[0105] S220, in the first conduction state, the first air pressure chamber P1 is in a negative pressure environment, and the quantitative pump to be tested PD pump quantitatively absorbs the reagent in the first container B1.

[0106] S230, in the second on state, the second air pressure chamber P2 is in a positive pressure environment, and the quantitative pump to be tested PD pump discharges the reagent sucked from the first container B1 into the second container B2.

[0107] S240, obtaining weighing data of the reagent in the second container B2.

[0108] S250, determining a performance test result of the quantitative pump PD pump to be tested according to the negative pressure data of the negative pressure environment of the first air pressure chamber P1 and the weighing data of the reagent in the second container B2.

[0109] The specific implementation process of the first pressure chamber P1, the second pressure chamber P2, the first container B1, the second container B2 and the quantitative pump PD pump to be tested in this embodiment can refer to the introduction in the embodiment of the performance testing device 100 based on the quantitative pump, which will not be repeated here.

[0110] The first conduction state and the second conduction state can be controlled manually or by an external controller, and the weighing data can be read manually or by an external controller.

[0111] Among them, the performance test result of the metering pump PD pump to be tested is determined according to the negative pressure data of the negative pressure environment of the first air pressure chamber P1 and the weighing data of the reagent in the second container B2. Specifically, reference may be made to the introduction of the three process examples of the performance testing device 100 based on the metering pump mentioned above, which will not be repeated here.

[0112] The performance test method based on the quantitative pump provided in the embodiment of the present application is to construct a negative pressure environment of the first air pressure chamber and a positive pressure environment of the second air pressure chamber. In the first conduction state, the first air pressure chamber is in a negative pressure environment, and the quantitative pump to be tested quantitatively absorbs the reagent in the first container. In the second conduction state, the second air pressure chamber is in a positive pressure environment, and the quantitative pump to be tested discharges the reagent absorbed from the first container to the second container. Then, the weighing data of the reagent in the second container is obtained, and the performance test result of the quantitative pump to be tested is determined based on the negative pressure data of the negative pressure environment of the first air pressure chamber and the weighing data of the reagent in the second container. The test process is simple and fast, and can be tested anytime and anywhere, and the performance of the quantitative pump to be tested can be accurately judged.

[0113] In a possible implementation, the method further includes:

[0114] Controlling the on-off between the first switch SV1 and the air pump Pump, and when the first switch SV1 and the air pump Pump are in conduction, the first air pressure chamber P1 is constructed into a negative pressure environment of the first air pressure chamber P1;

[0115] The on-off between the second switch SV2 and the air pump Pump is controlled, and when the second switch SV2 and the air pump Pump are in conduction, the second air pressure chamber P2 is constructed into a positive pressure environment of the second air pressure chamber P2.

[0116] Specifically, the process of constructing the negative pressure environment of the first air pressure chamber P1 and the positive pressure environment of the second air pressure chamber P2 can be found in the introduction of the embodiment of the performance testing device 100 based on the metering pump, which will not be repeated here.

[0117] In a possible implementation, the method further includes:

[0118] The third switch SV3 is controlled to be in the first state, the first air pressure chamber P1 and the quantitative pump to be tested PD pump are connected, and the quantitative pump to be tested PD pump is provided with a first working pressure;

[0119] The third switch SV3 is controlled to be in the second state, the second air pressure chamber P2 and the quantitative pump to be tested PD pump are connected, and the quantitative pump to be tested PD pump is provided with a second working pressure.

[0120] Specifically, the process of providing the first working pressure or the second working pressure to the tested metering pump PD pump corresponds to the description of the third switch SV3 being in the first state or the second state in the above-mentioned embodiment of the performance testing device 100 based on the metering pump, which will not be repeated here.

[0121] In a possible implementation, the method further includes:

[0122] The fourth switch SV4 is controlled to be in the third state, the quantitative pump to be tested PD pump and the first container B1 are connected, and under the action of the first working pressure, the reagent in the first container B1 is quantitatively sucked into the quantitative pump to be tested PD pump;

[0123] The fourth switch SV4 is controlled to be in the fourth state, the quantitative pump to be tested PD pump and the second container B2 are connected, and under the action of the second working pressure, the reagent sucked from the first container B1 is discharged into the second container B2.

[0124] Specifically, the process of the tested quantitative pump PD pump sucking or discharging the reagent corresponds to the description of the fourth switch SV4 being in the third state or the fourth state in the above-mentioned embodiment of the performance testing device 100 based on the quantitative pump, which will not be repeated here.

[0125] In a possible implementation, the method further includes:

[0126] The fifth switch SV5 and the sixth switch SV6 are respectively controlled to be in the fourth state, and the pressures in the first pressure chamber P1 and the second pressure chamber P2 are both restored to the initial state before the pressure is built up.

[0127] Specifically, restoring the first air pressure chamber P1 and the second air pressure chamber P2 to their initial states corresponds to the introduction of the fifth switch SV5 and the sixth switch SV6 in the above-mentioned embodiment of the performance testing device 100 based on the metering pump, which will not be repeated here.

[0128] From the above analysis, it can be known that the performance test method based on the quantitative pump provided in the embodiment of the present application, by constructing the negative pressure environment of the first air pressure chamber and the positive pressure environment of the second air pressure chamber, in the first conduction state, the first air pressure chamber is in a negative pressure environment, and the quantitative pump to be tested quantitatively absorbs the reagent in the first container, and in the second conduction state, the second air pressure chamber is in a positive pressure environment, and the quantitative pump to be tested discharges the reagent absorbed from the first container to the second container. Then, the weighing data of the reagent in the second container is obtained, and the performance test result of the quantitative pump to be tested is determined based on the negative pressure data of the negative pressure environment of the first air pressure chamber and the weighing data of the reagent in the second container. The test process is simple and fast, and can be tested anytime and anywhere, and the performance of the quantitative pump to be tested can be accurately judged.

[0129] This application also provides a computer device, see Figure 3 , Figure 3 An internal structural diagram of a computer device provided in an embodiment of the present application. The computer device includes a processor, a memory, and a network interface connected via a system bus. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program, which, when executed by the processor, enables the processor to implement the performance testing method of the performance testing device 100 based on a metering pump applied to the computer device in the above-mentioned embodiment. The internal memory may also store a computer program, which, when executed by the processor, enables the processor to execute the performance testing method of the performance testing device 100 based on a metering pump. Those skilled in the art will appreciate that Figure 3 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0130] The embodiment of the present application further discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, a performance testing method of the performance testing device 100 based on a metering pump in the method embodiment is implemented.

[0131] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing related hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRA M), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRD RAM), and memory bus dynamic RAM (RDRAM), etc.

[0132] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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.

Claims

1. A performance testing device based on a metering pump, characterized in that: The device comprises an air circuit assembly, a liquid circuit assembly, a first air pressure chamber, a second air pressure chamber, a first container, a second container, a weighing unit and a quantitative pump to be tested; wherein, The air circuit assembly is connected to the first air pressure chamber and the second air pressure chamber respectively, and is used to establish a negative pressure environment for the first air pressure chamber and a positive pressure environment for the second air pressure chamber; The first container is used to contain a reagent; The second container is used to collect the recovered reagent; One path of the quantitative pump to be tested is connected to the first container and the first air pressure chamber through the liquid path component, and is used to draw the reagent from the first container when the first air pressure chamber provides negative pressure; Another path of the quantitative pump to be tested is connected to the second air pressure chamber and the second container through the liquid path component, and is used to discharge the reagent sucked from the first container to the container when the second air pressure chamber provides positive pressure; The weighing unit is connected to the second container and is used to measure the weight of the reagent in the second container.

2. The device according to claim 1, characterized in that The gas circuit assembly includes an air pump, a first switch, and a second switch; wherein, One path of the air pump is connected to the first air pressure chamber via the first switch, and is used to construct a negative pressure environment of the first air pressure chamber in a first conduction state; Another path of the air pump is connected to the second air pressure chamber via the second switch, so as to construct a positive pressure environment of the second air pressure chamber in the second conduction state.

3. The device according to claim 1, characterized in that The gas circuit assembly also includes: The third switch is arranged between the quantitative pump to be tested and the first air pressure chamber and the second air pressure chamber, and is used for connecting the quantitative pump to be tested and the first air pressure chamber in a first state, and connecting the quantitative pump to be tested and the second air pressure chamber in a second state.

4. The device according to claim 1, characterized in that The fluid circuit assembly comprises: The fourth switch is arranged between the quantitative pump to be tested and the first container and the second container, and is used to connect the quantitative pump to be tested and the first container in the third state, and connect the quantitative pump to be tested and the second container in the fourth state.

5. The device according to claim 1, characterized in that The gas circuit assembly also includes a fifth switch and a sixth switch; wherein, The fifth switch is connected to the first air pressure chamber, and is used to restore the pressure of the first air pressure chamber to an initial state in a conducting state; The sixth switch is connected to the second air pressure chamber, and is used to restore the pressure of the second air pressure chamber to an initial state in a conducting state.

6. A performance testing method using the performance testing device based on a metering pump as described in any one of claims 1 to 5, characterized in that: The method comprises: Constructing a negative pressure environment in the first air pressure chamber and a positive pressure environment in the second air pressure chamber; In the first conduction state, the first air pressure chamber is in a negative pressure environment, and the quantitative pump to be tested quantitatively draws the reagent in the first container; In the second on state, the second air pressure chamber is in a positive pressure environment, and the quantitative pump to be tested discharges the reagent sucked from the first container into the second container; Obtaining weighing data of the reagent in the second container; The performance test result of the quantitative pump to be tested is determined according to the negative pressure data of the negative pressure environment of the first air pressure chamber and the weighing data of the reagent in the second container.

7. The method according to claim 6, characterized in that The method further comprises: Controlling the on-off between the first switch and the air pump, and when the first switch and the air pump are in conduction, the first air pressure chamber is constructed into a negative pressure environment of the first air pressure chamber; The on-off between the second switch and the air pump is controlled, and when the second switch and the air pump are in conduction, the second air pressure chamber is constructed into a positive pressure environment of the second air pressure chamber.

8. The method according to claim 6, characterized in that The method further comprises: Controlling the third switch to be in a first state, the first air pressure chamber and the quantitative pump to be tested are connected, and the quantitative pump to be tested is provided with a first working pressure; The third switch is controlled to be in a second state, the second air pressure chamber and the quantitative pump to be tested are connected, and the quantitative pump to be tested is provided with a second working pressure.

9. The method according to claim 8, characterized in that The method further comprises: The fourth switch is controlled to be in a third state, the quantitative pump to be tested and the first container are connected, and under the action of the first working pressure, the reagent in the first container is quantitatively sucked into the quantitative pump to be tested; The fourth switch is controlled to be in a fourth state, the quantitative pump to be tested and the second container are connected, and under the action of the second working pressure, the reagent sucked from the first container is discharged into the second container.

10. The method according to claim 6, characterized in that The method further comprises: The fifth switch and the sixth switch are respectively controlled to be in the fourth state, and the pressures in the first pressure chamber and the second pressure chamber are restored to the initial states before the pressure is built up.

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