Cleaning device, hematology analyzer, and cleaning method

Abstract

The present application discloses a cleaning device, a hematology analyzer, and a cleaning method. The cleaning device of the present application comprises a pressure module, a cleaning module, and a control module. The control module is configured to control the pressure module to provide a first pressure for a liquid pump so as to push a diaphragm in the liquid pump, and control the cleaning module to provide cleaning liquid for the liquid pump so as to clean the liquid pump. The diaphragm in the liquid pump is pushed by means of the first pressure and the cleaning liquid, so that a fault of the liquid pump is resolved, thereby increasing the operation stability of the liquid pump, improving the cleaning effect on the liquid pump, improving the practicability of the instrument, and enhancing the user experience on the cleaning device.

Description

Cleaning device, blood analyzer and cleaning method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 2023112894485, filed on September 27, 2023, entitled “A Cleaning Device, a Blood Analyzer, and a Cleaning Method,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of blood analysis, and in particular to a cleaning device, a blood analyzer, and a cleaning method. Background Art

[0004] Currently, blood analyzers use a liquid pump that changes the volume of its internal cavity by the back-and-forth movement of its own diaphragm to complete the suction or discharge of liquid, and cooperates with the operation of other components in the blood analyzer to realize sample testing operations during sample testing or maintenance operations during instrument maintenance.

[0005] In the prior art, after the sample testing operation is completed, a cleaning fluid is usually pumped out through a power component, such as a syringe or air source, and allowed to flow along the fluid path of the blood analyzer to clean the analyzer's pipes, liquid pumps, and other components. During instrument maintenance, the cleaning fluid is also pumped out through the power component to flow along the fluid path of the blood analyzer to clean the analyzer's pipes, liquid pumps, and other components. The above method has a poor cleaning effect and is prone to causing instrument malfunctions due to inadequate cleaning of the instrument, thereby affecting the use of the blood analyzer. Summary of the Invention

[0006] The present application provides a cleaning device to solve the above technical problems.

[0007] The cleaning device is used for cleaning a liquid pump, wherein the liquid pump includes a diaphragm, and the cleaning device includes:

[0008] a pressure module connected to the liquid pump, the pressure module being configured to generate a first pressure;

[0009] a cleaning module connected to the liquid pump, the cleaning module being used to provide cleaning liquid;

[0010] A control module is connected to the pressure module and the cleaning module respectively.

[0011] The control module is used for:

[0012] controlling the pressure module to communicate with the liquid pump so that the pressure module provides the first pressure to the liquid pump, thereby pushing the diaphragm;

[0013] The cleaning module is controlled to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump, thereby cleaning the liquid pump.

[0014] Wherein, the control module is used for:

[0015] controlling the pressure module to communicate with the liquid pump so that the pressure module provides the first pressure to the liquid pump, thereby pushing the diaphragm;

[0016] controlling the pressure module to stop providing the first pressure to the liquid pump;

[0017] controlling the cleaning module to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump, thereby cleaning the liquid pump;

[0018] The cleaning module is controlled to stop supplying the cleaning liquid to the liquid pump, and the pressure module is controlled to supply the first pressure to the liquid pump for a second time, so as to remove the cleaning liquid remaining in the liquid pump.

[0019] The pressure module includes a first tank body and a first valve body, the first port of the first tank body is connected to the pressure module, the second port of the first tank body is connected to the cleaning module, and the third port of the first tank body is connected to the liquid pump through the first valve body.

[0020] Among them, before the control module controls the pressure module to be connected with the liquid pump, the control module is also used to: control the first valve body to be closed, and control the pressure module to build pressure in the first tank body first; and after the pressure is built in the first tank body, control the first valve body to be opened, so that the first tank body is connected with the sample tube, and the pressure in the first tank body stably enters the liquid pump.

[0021] Wherein, in the process of the cleaning module providing the cleaning liquid to the liquid pump, the control module is further used to: control the first valve body to open, so that the cleaning liquid in the cleaning module enters the liquid pump through the first tank body to clean the liquid pump.

[0022] The pressure module further includes a pressure source, a second tank body and a second valve body, the first port of the second tank body is connected to the pressure source; the second port of the second tank body is connected to the first port of the first tank body through the second valve body.

[0023] Before the control module controls the pressure module to communicate with the liquid pump, the control module is used to control the second valve body to open, and control the pressure source to provide positive pressure to the second tank body and the first tank body, so that the second tank body and the first tank body generate the first pressure;

[0024] When the control module controls the pressure module to communicate with the liquid pump, the control module is further configured to control the first valve body to open, so as to provide the first pressure to the liquid pump through the first tank body and the second tank body; and control the pressure module to stop providing the first pressure to the liquid pump, so as to at least control the pressure in the first tank body and the second tank body to be released;

[0025] At least when the first tank body and the second tank body have released all the pressure, the control module is used to control the first valve body and the second valve body to close.

[0026] In which, the cleaning module includes a liquid storage tank, a third valve body, a first pool body, a first three-way joint and a fourth valve body, the liquid inlet of the first pool body is connected to the liquid storage tank through the third valve body, the first outlet and the second outlet of the first pool body are respectively connected to the first port and the second port of the first three-way joint, and the common port of the first three-way joint is connected to the second port of the first tank body through the fourth valve body.

[0027] Wherein, when the control module controls the cleaning module to be connected to the liquid pump, the third valve body, the fourth valve body and the first valve body are controlled to be open, and the cleaning liquid cleans the liquid pump via the liquid storage tank, the third valve body, the liquid inlet, the first tank body, the second outlet, the fourth valve body, the first tank body and the first valve body;

[0028] When the liquid pump is cleaned, the control module is used to control the third valve body, the fourth valve body and the first valve body to close.

[0029] After the cleaning device cleans the liquid pump, the first pool body is further used to prepare and store samples to be tested so that the samples to be tested can be tested, and the first tank body is further used to transport samples that have completed testing.

[0030] After the first cell body completes preparing the test sample, the control module controls the fourth valve body to open, and the test sample enters the first tank body through the fourth valve body.

[0031] In which, the cleaning module also includes a fifth valve body and a second three-way joint, the liquid storage tank is connected to the first port of the second three-way joint through the third valve body, the second port of the second three-way joint is connected to the liquid inlet of the first tank body, and the third port of the second three-way joint is connected to the third port of the first tank body through the fifth valve body.

[0032] Wherein, when the control module controls the cleaning module to be connected to the liquid pump, the control module is used to control the third valve body, the fifth valve body and the first valve body to open, and the cleaning liquid cleans the liquid pump via the liquid storage tank, the third valve body, the second three-way joint, the fifth valve body, the first tank body and the first valve body;

[0033] When the liquid pump is cleaned, the control module is used to control the third valve body, the fifth valve body and the first valve body to close.

[0034] Wherein, the flow rate of the cleaning liquid passing through the fourth valve body is greater than the flow rate of the cleaning liquid passing through the fifth valve body.

[0035] Wherein, the cleaning device includes a pressure relief module, the pressure relief module includes a sixth valve body and an air filter device, and the air filter device is connected to the fourth port of the first tank body through the sixth valve body;

[0036] After the pressure module stops providing the first pressure to the liquid pump for the second time, the control module is used to control the sixth valve body to open, so as to release the pressure of at least the first tank body and the second tank body.

[0037] In order to solve the above technical problems, the present application also provides a blood analyzer, including a sample preparation module, a detection module and a cleaning device as described above, wherein the sample preparation module is used to: provide sample liquid to the first pool body in the cleaning device, and prepare a sample to be tested based on the sample liquid; the detection module is used to perform sample detection on the sample to be tested, and the cleaning device is used to clean the devices and liquid circuits inside the blood analyzer.

[0038] In order to solve the above technical problems, the present application also provides a cleaning method, which is applied to the cleaning device as described above, and the method comprises:

[0039] controlling the pressure module to communicate with the liquid pump so that the pressure module provides the first pressure to the liquid pump, thereby pushing the diaphragm of the liquid pump;

[0040] The cleaning module is controlled to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump, thereby cleaning the liquid pump.

[0041] Wherein, after the step of controlling the cleaning module to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump to clean the liquid pump, the cleaning method further includes:

[0042] The pressure module is controlled to provide the first pressure to the liquid pump for a second time to remove the cleaning liquid in the liquid pump.

[0043] The step of controlling the cleaning module to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump and then cleaning the liquid pump includes:

[0044] The third valve body, the fourth valve body and the first valve body are controlled to open so that the cleaning liquid in the liquid storage tank can enter the liquid pump through the first tank body to clean the first tank body and the liquid pump.

[0045] The step of controlling the cleaning module to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump and then cleaning the liquid pump further includes:

[0046] The third valve body, the fifth valve body and the first valve body are controlled to open so that the cleaning liquid in the liquid storage tank directly enters the liquid pump to clean the liquid pump.

[0047] The beneficial effects of the present application are as follows: Unlike the prior art, the cleaning device of the present application includes a pressure module, a cleaning module, and a control module. The control module is used to control the pressure module to provide a first pressure to the liquid pump to push the diaphragm in the liquid pump, and to control the cleaning module to provide cleaning fluid to the liquid pump to clean the liquid pump. The diaphragm in the liquid pump is pushed by the first pressure and the cleaning fluid, thereby eliminating the fault of the liquid pump, improving the stability of the liquid pump operation, improving the cleaning effect of the liquid pump, improving the practicality of the instrument, and enhancing the user experience of the cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, 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 creative work.

[0049] FIG1 is a schematic structural diagram of a first embodiment of a cleaning device of the present application;

[0050] FIG2 is a schematic structural diagram of a second embodiment of the cleaning device of the present application;

[0051] FIG3 is a schematic structural diagram of a third embodiment of the cleaning device of the present application;

[0052] FIG4 is a schematic flow chart of a first embodiment of the cleaning method of the present application;

[0053] FIG5 is a schematic diagram of a flow chart of an embodiment of step S2;

[0054] FIG6 is a flow chart of another embodiment of step S2.

[0055] Figure numbers: cleaning device 1; pressure module 11; pressure source 111; second tank body 112; second valve body 113; cleaning module 12; liquid storage tank 121; third valve body 122; first tank body 123; first three-way connector 124; fourth valve body 125; fifth valve body 126; second three-way connector 127; first tank body 13; first valve body 14; pressure relief module 15; sixth valve body 151; air filter device 152; waste liquid tank 16; liquid pump 2. Modes for Carrying Out the Invention

[0056] The following describes the embodiments of the present application in detail with reference to the accompanying drawings.

[0057] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0058] The terms "first," "second," and the like in this application are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0059] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0060] Please refer to Figure 1, which is a schematic diagram of the structure of the first embodiment of the cleaning device of the present application. The cleaning device 1 and liquid pump 2 provided in this embodiment of the present application are installed in a blood analyzer (not shown). The cleaning device 1 is used to clean at least the liquid path in the blood analyzer and the liquid pump 2 in the blood analyzer to prevent abnormal diaphragm movement in the liquid pump 2. In the present application, the liquid pump 2 comprises a diaphragm pump, also known as a diaphragm pump; the liquid pump 2 includes a diaphragm. The cleaning device 1 includes a pressure module 11, a cleaning module 12, and a control module (not shown).

[0061] The pressure module 11 is connected to the liquid pump 2 for generating a first pressure; the cleaning module 12 is also connected to the liquid pump 2 for providing cleaning liquid; and the control module is connected to the pressure module 11 and the cleaning module 12 respectively.

[0062] The control module is used to: control the pressure module 11 to communicate with the liquid pump 2, so that the pressure module 11 provides a first pressure to the liquid pump 2, thereby pushing the diaphragm; and control the cleaning module 12 to communicate with the liquid pump 2, so that the cleaning module 12 provides a cleaning fluid to the liquid pump 2, thereby cleaning the liquid pump. In this application, the diaphragm in the liquid pump 2 is pushed by the first pressure and the cleaning fluid, thereby resolving the fault of the liquid pump 2, improving the operational stability of the liquid pump 2, improving the cleaning effect of the liquid pump 2, improving the practicality of the instrument, and enhancing the user experience of the cleaning device.

[0063] In an optimized embodiment, the control module is used to: control the pressure module 11 to be connected with the liquid pump 2, so that the pressure module 11 provides a first pressure to the liquid pump 2, thereby pushing the diaphragm of the liquid pump 2; control the pressure module 11 to stop providing the first pressure to the liquid pump 2; control the cleaning module 12 to be connected with the liquid pump 2, so that the cleaning module 12 provides cleaning liquid to the liquid pump 2, thereby cleaning the liquid pump 2; control the cleaning module 12 to stop providing cleaning liquid to the liquid pump 2, and control the pressure module 11 to provide the first pressure to the liquid pump 2 for the second time to remove the residual cleaning liquid in the liquid pump 2.

[0064] In one embodiment, before the liquid pump 2 is used for the first time after being left unused for a long time, the user can input a cleaning instruction in the blood analyzer, or the blood analyzer can automatically start a built-in maintenance program, or automatically start a built-in liquid pump fault elimination program in the blood analyzer when the liquid pump 2 reports a fault, or receive a fault handling instruction input by the user in the blood analyzer when the liquid pump 2 reports a fault, so that the control module controls the pressure module 11 to communicate with the liquid pump 2, and the pressure module 11 provides a first pressure to the liquid pump 2.

[0065] By controlling the pressure module 11 to provide a first pressure to the liquid pump 2 to push the diaphragm in the liquid pump 2, if the diaphragm is difficult to push due to reasons such as sticking, the first pressure generated by the pressure module 11 can restore the faulty diaphragm to normal use and restore the operating function of the liquid pump 2.

[0066] When the pressure module 11 stops providing the first pressure to the liquid pump 2 and the first pressure in the liquid pump 2 is released, the control module controls the cleaning module 12 to communicate with the liquid pump 2, so that the cleaning module 12 provides cleaning liquid to the liquid pump 2, thereby cleaning the liquid pump 2.

[0067] In the prior art, to deal with problems such as sticking in a liquid pump, the user needs to use a syringe to pump back and forth between the outlet and inlet of the liquid pump to restore the diaphragm in the liquid pump and eliminate the problem. However, for a liquid pump installed in a blood analyzer, the liquid pump is already connected to the liquid circuit in the blood analyzer. In the limited instrument space, it is not easy to use a syringe to operate the outlet and inlet of the liquid pump. Therefore, it is difficult to use an external syringe to restore the sticking of the diaphragm of the liquid pump installed in the blood analyzer, affecting the operation of the liquid pump in the blood analyzer and further affecting the blood analyzer's detection efficiency of the sample. In this application, diaphragm sticking is generally caused by residual liquid in the liquid pump 2, and the negative pressure generated inside the liquid pump 2 after being left for a long time causes the residual liquid to crystallize, causing the diaphragm to stick. Or, when the blood analyzer is packaged, in order to empty the liquid circuit, the liquid pump is always in a draining state, and the waste liquid tank 16 is in a negative pressure state, causing the diaphragm of the liquid pump to be in a negative pressure state, which is prone to sticking. Therefore, in the present application, after the pressure module 11 generates the first pressure to push the diaphragm, the crystals stuck on the diaphragm loosen or even fall off. At this time, the cleaning module 12 provides cleaning liquid to the liquid pump 2. The cleaning liquid enters the liquid pump 2 to clean away the fallen crystals and the crystals stuck on the diaphragm, thereby avoiding the diaphragm from sticking again due to residual crystals.

[0068] Furthermore, after the cleaning module 12 provides cleaning liquid to the liquid pump 2 for a period of time, the crystals and impurities in the liquid pump 2 can be flushed out of the liquid pump 2 after a period of flushing with the cleaning liquid. At this time, the control unit controls the cleaning module 12 to stop providing cleaning liquid to the liquid pump 2, thereby avoiding excessive cleaning of the liquid pump 2 and wasting cleaning liquid. In addition, the control module controls the pressure module 11 to provide the first pressure to the liquid pump 2 for the second time. At this time, the first pressure provided by the pressure module 11 can take away the residual cleaning liquid in the liquid pump 2, thereby having the effect of air-drying the liquid pump 2, preventing the diaphragm in the liquid pump 2 from sticking again due to the residual cleaning liquid, thereby improving the cleaning efficiency and cleaning effect of the cleaning device 1 on the liquid pump 2, and improving the operational stability of the liquid pump 2.

[0069] In one embodiment, the pressure module 11 and the cleaning module 12 are respectively connected to the liquid pump 2 through a two-way valve, and the two two-way valves are independent of each other. The control module controls whether the pressure module 11 and the cleaning module 12 are connected to the liquid pump 2 by controlling the opening or closing of the two two-way valves.

[0070] In summary, the control module controls the pressure module 11 to provide the first pressure to the liquid pump 2 for the first time to push the diaphragm, so that the sticky diaphragm can return to normal state; the control module further controls the cleaning module 12 to provide cleaning liquid to the liquid pump 2 to clean the residual crystals and impurities in the liquid pump, thereby achieving the effect of cleaning the liquid pump 2; finally, the control module controls the pressure module 11 to provide the first pressure to the liquid pump 2 for the second time to remove the residual cleaning liquid in the liquid pump 2, air-dry the liquid pump 2, and avoid the diaphragm in the liquid pump 2 from sticking again due to the residual cleaning liquid, thereby improving the cleaning efficiency and cleaning effect of the cleaning device 1 on the liquid pump 2.

[0071] Alternatively, please refer to FIG2 , which is a schematic structural diagram of a second embodiment of a cleaning device of the present application. The pressure module 11 provided in the embodiment of the present application includes a first tank body 13 and a first valve body 14 .

[0072] The first port of the first tank body 13 is connected to the pressure module 11 , the second port of the first tank body 13 is connected to the cleaning module 12 , and the third port of the first tank body 13 is connected to the liquid pump 2 through the first valve body 14 .

[0073] Specifically, the first valve body 14 can be a two-way valve. When the control module controls the pressure module 11 to provide the first pressure to the liquid pump 2 for the first time, the pressure module first builds up pressure in the first tank body 13. After a stable pressure is formed in the first tank body 13, the first valve body 14 is opened, and the liquid pump 2 is connected to the first tank body 13. The first pressure continuously and stably enters the liquid pump 13, causing a stable impact on the diaphragm of the liquid pump 13.

[0074] In addition, when the control module controls the cleaning module 12 to provide cleaning liquid to the liquid pump 2 to clean the liquid pump 2, the control module simultaneously controls the first valve body 14 to open, and the cleaning liquid is transported from the cleaning module 12 through the first tank body 13 to the liquid pump 2 for cleaning. Due to the setting of the first tank body 13, the backflow of the cleaning liquid is avoided, and the cleaning liquid with impurities in the liquid pump 2 flows back into the cleaning module 12, causing pollution to the cleaning liquid in the cleaning module 12, thereby improving the safety of the cleaning device 1.

[0075] Alternatively, please refer to FIG3 , which is a schematic structural diagram of a third embodiment of the cleaning device of the present application. The pressure module 11 includes a pressure source 111 , a second tank 112 , and a second valve body 113 .

[0076] The first port of the second tank 112 is connected to the pressure source 111, and the second port of the second tank 112 is connected to the first port of the first tank 13 through the second valve 113. In one embodiment, the pressure source 111 may be an air pump, and the second valve 113 may be a two-way valve.

[0077] Specifically, before the control module controls the pressure module 11 to communicate with the liquid pump 2, the control module is configured to control the second valve body 113 to open, and control the pressure source 111 to provide positive pressure to the second tank body 112 and the first tank body 13, so that the second tank body 112 and the first tank body 13 generate a first pressure. When the control module controls the pressure module 11 to communicate with the liquid pump 2, the control module is configured to control the first valve body 14 to open, so as to provide the first pressure to the liquid pump 2 through the first tank body 13 and the second tank body 112; and control the pressure module 11 to stop providing the first pressure to the liquid pump 2. After a portion of the first pressure in the first tank body 13 and the second tank body 112 flows along the flow path of the blood analyzer into the liquid pump 2, and at least the pressure in the first tank body 13 and the second tank body 112 is released, the control module is configured to control the first valve body 14 and the second valve body 113 to close. In one embodiment, after part of the first pressure in the first tank body 13 and the second tank body 112 flows into the liquid pump 2 along the flow path of the blood analyzer, when the first tank body 13, the second tank body 112 and the liquid pump 2 are controlled to release the pressure, the control module is used to control the first valve body 14 and the second valve body 113 to close.

[0078] In one embodiment, before controlling the pressure module 11 to be connected with the liquid pump 2, the control module controls the pressure source 111 to first provide positive pressure to the first tank body 13 and the second tank body 112. Then, when the pressure module 11 is connected with the liquid pump 2, that is, when the control module controls the first valve body 14 to be opened, the first tank body 13 can immediately provide stable pressure to the liquid pump 2, shortening the waiting time, improving the efficiency of the pressure module 11 in providing pressure to the liquid pump 2, and improving the controllability of the instrument.

[0079] Specifically, after pressure buildup between first tank 13 and second tank 112 is complete, first valve 14 is controlled to open. At this point, due to the pressure differential, the gas in first tank 13 enters liquid pump 2, pushing the diaphragm, restoring it to its normal state. Simultaneously, due to the pressure differential, the gas in second tank 112 enters first tank 13 and continues along the blood analyzer's flow path toward liquid pump 2, further pushing the diaphragm there.

[0080] After the first pressure provided by the second tank body 112 and the first tank body 13 continues to flush the liquid pump 2 for a period of time, the air pressure in the first tank body 13, the second tank body 112, and the liquid pump 2 is released. After the pressure in the first tank body 13, the second tank body 112, and the liquid pump 2 is released, the control module is used to control the first valve body 14 and the second valve body 113 to close. Specifically, when the control module responds to the pressure module 11 to release the first pressure in the second tank body 112, the first tank body 13, and the liquid pump 2, the control module controls the first valve body 14 and the second valve body 113 to close, thereby isolating the first tank body 13, the second tank body 112, and the liquid pump 2.

[0081] Among them, after the pressure module 11 pushes the diaphragm, the control module will further control the cleaning module 12 to provide cleaning liquid to clean the liquid pump 2. Therefore, if the pressure in the first tank body 13 and / or the liquid pump 2 is not fully released, the first pressure will prevent the cleaning liquid from passing through the first tank body 13 and entering the liquid pump 2, and may even force the cleaning liquid in the cleaning module 12 to flow back, affecting the cleaning effect of the cleaning module 12 on the liquid pump 2. Therefore, the control module controls the first valve body 14 and the second valve body 113 to be continuously open for a period of time to push the diaphragm of the liquid pump 2. After the first valve body 14 and the second valve body 113 are continuously opened for a period of time, it is necessary to control the pressure in the first tank body 13, the second tank body 112, and the liquid pump 2 to be released.

[0082] Optionally, the cleaning module 12 includes a liquid storage tank 121 , a third valve body 122 , a first tank body 123 , a first three-way connector 124 and a fourth valve body 125 .

[0083] The liquid storage tank 121 can be used to store cleaning liquid or diluent, and the third valve body 122 and the fourth valve body 125 can be two-way valves. The liquid inlet of the first tank body 123 is connected to the liquid storage tank 121 through the third valve body 122. The first outlet and second outlet of the first tank body 123 are respectively connected to the first port and second port of the first three-way connector 124. The common port of the first three-way connector 124 is connected to the second port of the first tank body 13 through the fourth valve body 125.

[0084] In one embodiment, when the control module controls the cleaning module 12 to be connected to the liquid pump 2, specifically, the control module controls the third valve body 122, the fourth valve body 125 and the first valve body 14 to open, and then the liquid storage tank 121 is connected to the liquid pump 2, and the cleaning liquid in the liquid storage tank 121 enters the liquid pump 2 through the third valve body 122, the liquid inlet, the first tank body 123, the second outlet, the first three-way joint 124, the fourth valve body 125, the first tank body 13 and the first valve body 14, to clean the liquid pump 2 to remove crystals and impurities that cause the diaphragm to malfunction and prevent the diaphragm from sticking again. Furthermore, the liquid pump 2 can also be connected to a waste liquid tank 16, wherein, after the cleaning liquid cleans the liquid pump 2, the cleaning waste liquid carrying impurities is transported to the waste liquid tank 16 through the outlet end of the liquid pump 2 for storage.

[0085] In one embodiment, the control module can control the liquid storage tank 121 to continuously output cleaning liquid to the liquid pump 2 within a preset time to ensure the cleaning effect of the liquid pump 2. After the cleaning module 12 cleans the liquid pump 2 for the preset time, the control module determines that the cleaning module 12 has completed cleaning the liquid pump 2 and controls the third valve body 122, the fourth valve body 125, and the first valve body 14 to close.

[0086] In one embodiment, after the cleaning device 1 completes cleaning of the liquid pump 2 and the diaphragm in the liquid pump 2 returns to normal, during the sample testing process of the blood analyzer, the first pool body 123 is also used to prepare and store the samples to be tested so that the samples to be tested can be tested; the first tank body 13 is also used to transport the samples that have completed the test.

[0087] Specifically, after the cleaning device 1 completes the cleaning of the liquid pump 2, the blood analyzer enters the sample detection stage. The user can inject the sample liquid into the first pool body 123, and the control module controls the liquid storage tank 121 to inject the diluent into the first pool body 123 through the third valve body 122 and / or the control module controls other reagent modules to inject corresponding reagents into the first pool body 123. The sample liquid is mixed with the diluent and / or other reagents in the first pool body 123 to form a sample to be detected. Then, during the sample detection process, the blood analyzer can transport the sample to be detected to the first tank body 13 through the fourth valve body 125.

[0088] In one embodiment, the first pool body 123 may include but is not limited to an RBC (Red-Blood-Cell) pool, a WBC (White-Blood-Cell) pool, and a WNR (WBC-NRBC, nucleated erythrocyte) pool, and the sample fluid injected by the user may be a blood cell sample fluid.

[0089] Optionally, the cleaning module 12 further includes a fifth valve body 126 and a second three-way connector 127 .

[0090] Among them, the fifth valve body 126 can be a two-way valve, the liquid storage tank 121 is connected to the first port of the second three-way joint 127 through the third valve body 122, the second port of the second three-way joint 127 is connected to the liquid inlet of the first pool body 123, and the third port of the second three-way joint 127 is connected to the third port of the first tank body 13 through the fifth valve body 126.

[0091] Specifically, when the control module controls the connection between the cleaning module 12 and the liquid pump 2, the control module is used to control the third valve body 122, the fifth valve body 126, and the first valve body 14 to open, and the cleaning liquid flows through the liquid storage tank 121, the third valve body 122, the second three-way joint 127, the fifth valve body 126, the first tank body 13, and the first valve body 14 to clean the liquid pump 2. After cleaning the liquid pump 2, the control module is used to control the third valve body 122, the fifth valve body 126, and the first valve body 14 to close.

[0092] In one embodiment, as can be seen from the above, when the blood analyzer is in the sample detection process, the first pool body 123 is used to prepare and store the sample to be detected and to detect the sample to be detected stored therein, or to detect the sample to be detected, and the first tank body 13 is used to transport the sample that has completed the detection. At this time, when the cleaning module 12 is to be connected to the liquid pump 2 to clean the liquid pump 2, the control module controls the third valve body 122, the fifth valve body 126 and the first valve body 14 to open, and the sample that has completed the detection stored in the first tank body 13 enters the waste liquid tank 16 through the liquid pump 2, and the cleaning liquid in the liquid storage tank 121 enters the first tank body 13 through the third valve body 122 and the fifth valve body 126, first cleaning the first tank body 13, and then enters the liquid pump 2 through the first valve body 14 to clean the liquid pump 2, and finally the cleaning waste liquid enters the waste liquid tank 16.

[0093] Through the second three-way connector 127 and the fifth valve body 126, when the first pool body 123 stores the sample to be tested, the cleaning liquid does not pass through the first pool body 123, thereby avoiding contamination of the sample to be tested by the cleaning liquid. Furthermore, a two-way valve can be installed between the second port of the second three-way connector 127 and the liquid inlet of the first pool body 123 to further isolate the cleaning liquid from entering the first pool body 123, thereby improving the reliability of the cleaning device 1 in the blood analyzer.

[0094] In another embodiment, if the liquid storage tank 121 stores a diluent, the diluent can enter the first pool body 123 through the third valve body 122 and the second port of the second three-way joint 127, dilute the sample liquid in the first pool body 123, and form a sample to be tested. Under the power of the blood analyzer, the sample to be tested flows in a certain direction in the first pool body 123 for sample counting and detection, and the waste liquid of the sample after the test reaches the fourth valve body 125 through the common port of the first three-way joint 124, and is transported to the first tank body 13 for storage, and further discharged into the waste liquid tank 16.

[0095] In another embodiment, the flow rates of cleaning fluid passing through the fourth valve body 125 and the fifth valve body 126 can be different. The flow rate of cleaning fluid passing through the fourth valve body 125 can be greater than the flow rate of cleaning fluid passing through the fifth valve body 126. During the cleaning process of a long-idle liquid pump 2, if a large flow rate of cleaning fluid is required to clean the liquid pump 2, the control module can control the opening of the third valve body 122 and the fourth valve body 125 to provide a large flow rate of cleaning fluid to the liquid pump 2. If the liquid pump 2 requires a small flow rate of cleaning fluid, the control module can control the opening of the third valve body 122 and the fifth valve body 126 to provide a small flow rate of cleaning fluid to the liquid pump 2. It will be understood that when the cleaning device 1 is cleaning a long-idle liquid pump 2, the control module can control the opening of the fourth valve body 125 or the fifth valve body 126 according to the flow rate of cleaning fluid required by the liquid pump 2 to provide different flow rates of cleaning fluid to the liquid pump 2.

[0096] In summary, the control module can control the opening and closing of each valve body based on the specific operations performed by the blood analyzer to realize the sample detection operation or cleaning operation in the blood analyzer, realize the automation of the blood analyzer, and improve the convenience of the blood analyzer.

[0097] Optionally, the cleaning device 1 further includes a pressure relief module 15 .

[0098] The pressure relief module 15 includes a sixth valve body 151 and an air filter device 152. The air filter device 152 is connected to the first port of the first tank body 13 via the sixth valve body 151. After the pressure module 11 stops providing the first pressure to the liquid pump 2 for the second time, the control module is configured to control the sixth valve body 151 to open, thereby releasing pressure from at least the first tank body 13 and the second tank body 112. In another embodiment, after the pressure module 11 stops providing the first pressure to the liquid pump 2 for the second time, the control module is configured to control the sixth valve body 151 to open, thereby releasing pressure from the first tank body 13, the second tank body 112, and the liquid pump 2.

[0099] Specifically, after the gas in the second tank body 112 and the first tank body 13 dries up the residual cleaning liquid in the liquid pump 2, the control module controls the sixth valve body 151 to open, and the air filter device 152 is connected to the external environment. Due to the air pressure difference, the gas in the second tank body 112, the first tank body 13 and the liquid pump 2 will enter the external environment through the sixth valve body 151 and the air filter device 152 to achieve pressure relief of the second tank body 112, the first tank body 13 and the liquid pump 2. Among them, the air filter device 152 can prevent dust in the external environment from entering the pipeline, causing blockage of the pipeline, and improving the reliability of the cleaning device 1.

[0100] In summary, the cleaning device 1 installed in a blood analyzer includes a pressure module 11, a cleaning module 12, a control module, a first tank 13, a first valve 14, and a pressure relief module 15. The control module controls the pressure module 11 to provide a first pressure to the liquid pump 2 via the first tank 13 and the first valve 14, thereby pushing the diaphragm in the liquid pump 2 and restoring it to its normal state. The pressure module 11 establishes a stable first pressure in the first tank 13 and the second tank 112 before the first pressure is generated, thereby improving the operational stability of the blood analyzer.

[0101] The control module then controls the cleaning module 12 to provide cleaning liquid to the liquid pump 2 through the first tank body 13 to clean impurities and crystals in the liquid pump 2 and reduce the diaphragm from sticking again. Among them, the first tank body 13 avoids the cleaning liquid from flowing back to the cleaning module 12 from the liquid pump 2, thereby improving the safety of the cleaning device 1 in providing cleaning liquid to the liquid pump 2.

[0102] Finally, the control module controls the pressure module 11 to provide the first pressure to the liquid pump 2 for the second time. Similar to the first time, the pressure module 11 can form a stable first pressure in the first tank body 13 and the second tank body 112 first, and then the control module controls the first valve body 14 to open, and the gas in the first tank body 13 enters the liquid pump 2, and the liquid pump 2 is air-dried to take away the residual cleaning liquid in the liquid pump 2, so as to avoid the residual cleaning liquid causing the diaphragm to stick again, thereby improving the stability of the operation of the liquid pump 2 and improving the cleaning efficiency of the cleaning device 1.

[0103] The present application also provides a blood analyzer (not shown), comprising a sample preparation module, a detection module, and a cleaning device 1. The sample preparation module is used to provide a sample liquid to the first cell body 123 and prepare a sample to be tested based on the sample liquid; the detection module is used to test the sample to be tested formed in the first cell body 123; and the cleaning device 1 is used to clean the components and fluid circuits within the blood analyzer.

[0104] In one embodiment, the sample preparation module can be connected to the first cell body 123 to inject the sample liquid into the first cell body 123. When the diluent is injected into the first cell body 123 through the liquid storage tank 121 and / or other reagent modules inject corresponding reagents into the first cell body 123, the sample liquid in the first cell body 123 is mixed with the diluent and / or corresponding other reagents to form a sample to be tested. The detection module can be located in the first cell body 123 to test the sample to be tested formed in the first cell body 123, or the detection module can be located in a newly installed detection cell (a cell body independent of the first cell body 123, not shown in the figure). When the sample to be tested is prepared in the first cell body 123 and stored in the first cell body 123, the detection module can test the sample to be tested stored in the first cell body 123, or can transfer the sample to be tested prepared in the first cell body 123 to the newly installed detection cell for testing. In other words, both the first cell body 123 and the newly installed detection cell can serve as locations for sample testing. This application does not specifically limit the testing location of the samples to be tested.

[0105] When the first cell 123 contains no samples to be tested (when the user first powers on the blood analyzer), the cleaning device 1 cleans the first cell 123 and the liquid pump 2, thereby cleaning the internal components and fluid circuits of the blood analyzer and maintaining the diaphragm in the liquid pump 2 in a normal state. When the first cell 123 contains samples to be tested (when the blood analyzer is in the process of testing samples), the cleaning device 1 cleans the liquid pump 2 to prevent the cleaning fluid from entering the first cell 123 and contaminating the samples to be tested. By controlling the opening and closing of the valves in the blood analyzer through the control module, the cleaning device 1 performs different cleaning operations depending on the blood analyzer's state, enhancing the intelligence of the cleaning device 1 and the convenience of the blood analyzer.

[0106] The present application also provides a cleaning method for cleaning the liquid pump 2 in a blood analyzer that is being turned on for the first time or has been stored for a long time. Please refer to Figure 4, which is a flow chart of the first embodiment of the cleaning method of the present application. The cleaning method provided in this embodiment of the present application specifically includes the following steps:

[0107] S1 : Control the pressure module 11 to provide a first pressure to the liquid pump 2 .

[0108] Among them, due to the possible diaphragm sticking failure problem in the liquid pump 2, the normal operation of the liquid pump 2 is affected. When the blood analyzer is turned on for the first time after being left for a long time, the control module first controls the pressure module 11 to be connected with the liquid pump 2. Specifically, the control module controls the second valve body 113 to open, and then the pressure source 111 applies positive pressure to the second tank body 112 and the first tank body 13. After the first pressure is formed in the first tank body 13, the control module controls the first valve body 14 to open, so that the pressure module 11 provides the first pressure to the liquid pump 2. The first pressure pushes the diaphragm in the liquid pump 2 to restore the sticky diaphragm to a normal state.

[0109] When the diaphragm returns to its normal state and the force balance between the resistance generated by the deformation and the thrust of the gas is achieved, the control module controls the gas to no longer be delivered to the liquid pump 2, so as to at least release the pressure of the first tank body 13 and the second tank body 112. Specifically, the control module controls the sixth valve body 151 to open, and the gas in the first tank body 13 and the liquid pump 2 will enter the external environment through the sixth valve body 151 and the air filter device 152 due to the air pressure difference, thereby relieving the pressure of the first tank body 13 and the liquid pump 2, so as to prepare for the subsequent cleaning module 12 to inject cleaning liquid into the first tank body 13.

[0110] S2: Control the cleaning module 12 to provide cleaning liquid to the liquid pump 2.

[0111] In step S1, the first pressure generated by the pressure module 11 pushes the diaphragm, causing the sticky diaphragm to return to a normal state, while the impurity crystals that cause the diaphragm to stick fall into the liquid pump 2 or remain stuck on the diaphragm. Therefore, the control module controls the cleaning module 12 to provide cleaning liquid to the liquid pump 2 to clean the liquid pump 2, remove the impurity crystals in the liquid pump 2, and avoid the diaphragm from sticking.

[0112] Specifically, the control module controls the third valve body 122, the fourth valve body 125 and the first valve body 14 to open, and then the liquid storage tank 121 is connected to the liquid pump 2, and the cleaning liquid in the liquid storage tank 121 enters the liquid pump 2 through the third valve body 122, the fourth valve body 125 and the first valve body 14 to clean the interior of the liquid pump 2.

[0113] S3 : Controlling the pressure module 11 to provide the first pressure to the liquid pump 2 for the second time.

[0114] In step S2, the cleaning liquid used to clean the liquid pump 2 will enter the waste liquid tank 16 connected to the liquid pump 2, but there is still residual cleaning liquid in the liquid pump 2. At this time, the control module controls the pressure module 11 to provide the first pressure to the liquid pump 2 for the second time to provide gas to flush the residual cleaning liquid inside the liquid pump 2, air-dry the liquid pump 2, and remove the residual cleaning liquid in the liquid pump 2 to avoid the diaphragm from sticking again due to the residual cleaning liquid, thereby ensuring the cleaning effect. The specific steps of step S3 are the same as those of step S1 and are not repeated here.

[0115] In summary, through steps S1-S3, the control module controls the pressure module 11 to provide the first pressure twice to clean the liquid pump 2, ensuring the cleaning effect of the cleaning device 1 on the liquid pump 2, so that the diaphragm returns to normal state and is not easy to stick again, thereby improving the efficiency of the cleaning device 1 in cleaning the liquid pump 2 and improving the convenience and reliability of the cleaning device 1.

[0116] Alternatively, please refer to Figure 5, which is a flow chart of an embodiment of step S2. Step S2 of the cleaning method provided in the embodiment of the present application specifically includes the following steps:

[0117] S51 : Control the third valve body 122 , the fourth valve body 125 and the first valve body 14 to open, so that the cleaning liquid in the liquid storage tank 121 can enter the liquid pump 2 through the first tank body 123 to clean the first tank body 123 and the liquid pump 2 .

[0118] Among them, as mentioned above, the first pool body 123 can be used as a preparation place for the sample to be tested or a detection place for the sample to be tested. Therefore, when the blood analyzer is just turned on, the sample is prepared or the sample is tested in the first pool body 123, and the sample to be tested in the first pool body 123 is drained, the control module can control the third valve body 122, the fourth valve body 125 and the first valve body 14 to open, and then the cleaning liquid in the liquid storage tank 121 can enter the liquid pump 2 through the third valve body 122, the first pool body 123, the first three-way joint 124, the fourth valve body 125, the first tank body 13 and the first valve body 14 to clean the first pool body 123 and the liquid pump 2. The first pool body 123 is cleaned while cleaning the liquid pump 2, thereby improving the efficiency of sample preparation and sample testing, and improving the practicality of the cleaning method.

[0119] Optionally, please refer to Figure 6, which is a flow chart of another embodiment of step S2. Step S2 of the cleaning method provided in the embodiment of the present application may further include the following steps:

[0120] S61 : Control the third valve body 122 , the fifth valve body 126 and the first valve body 14 to open, so that the cleaning liquid in the liquid storage tank directly enters the liquid pump 2 to clean the liquid pump 2 .

[0121] Among them, as mentioned above, the first pool body 123 can be used as a preparation place for the sample to be tested or a detection place for the sample to be tested. Therefore, when the first pool body 123 is preparing the sample or detecting the sample, that is, when there is a sample to be tested in the first pool body 123, the control module controls the third valve body 122, the fifth valve body 126 and the first valve body 14 to open, and the cleaning liquid passes through the liquid storage tank 121, the third valve body 122, the second three-way joint 127, the fifth valve body 126, the first tank body 13 and the first valve body 14 cleaning liquid pump 2, while bypassing the first pool body 123, thereby avoiding contamination of the sample to be tested by the cleaning liquid and improving the reliability of the cleaning method.

[0122] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A cleaning device, characterized in that: For a cleaning liquid pump, the liquid pump comprises a diaphragm, and the cleaning device comprises: A pressure module connected to the liquid pump, the pressure module is used to generate a first pressure; A cleaning module connected to the liquid pump, the cleaning module is used to provide cleaning liquid; A control module is connected to the pressure module and the cleaning module respectively, and the control module is used for: Controlling the pressure module to communicate with the liquid pump so that the pressure module provides the first pressure to the liquid pump, thereby pushing the diaphragm; The cleaning module is controlled to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump, thereby cleaning the liquid pump.

2. The cleaning device according to claim 1, characterized in that: The control module is used for: Controlling the pressure module to communicate with the liquid pump so that the pressure module provides the first pressure to the liquid pump, thereby pushing the diaphragm; controlling the pressure module to stop providing the first pressure to the liquid pump; Controlling the cleaning module to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump, thereby cleaning the liquid pump; The cleaning module is controlled to stop supplying the cleaning liquid to the liquid pump, and the pressure module is controlled to supply the first pressure to the liquid pump for a second time, so as to remove the cleaning liquid remaining in the liquid pump.

3. The cleaning device according to claim 2, characterized in that: The pressure module includes a first tank body and a first valve body, the first port of the first tank body is connected to the pressure module, the second port of the first tank body is connected to the cleaning module, and the third port of the first tank body is connected to the liquid pump through the first valve body.

4. The cleaning device according to claim 3, characterized in that: Before the control module controls the pressure module to be connected with the liquid pump, the control module is also used to: control the first valve body to be closed, and control the pressure module to build up pressure in the first tank body first; and after the pressure is built up in the first tank body, control the first valve body to be opened so that the first tank body is connected with the sample tube, and the pressure in the first tank body stably enters the liquid pump.

5. The cleaning device according to claim 3, characterized in that: In the process that the cleaning module provides the cleaning liquid to the liquid pump, the control module is also used to: control the first valve body to open, so that the cleaning liquid in the cleaning module enters the liquid pump through the first tank body to clean the liquid pump.

6. The cleaning device according to claim 3, characterized in that: The pressure module further includes a pressure source, a second tank body and a second valve body. The first port of the second tank body is connected to the pressure source; the second port of the second tank body is connected to the first port of the first tank body through the second valve body.

7. The cleaning device according to claim 6, characterized in that: Before the control module controls the pressure module to communicate with the liquid pump, the control module is used to control the second valve body to open, and control the pressure source to provide positive pressure to the second tank body and the first tank body, so that the second tank body and the first tank body generate the first pressure; When the control module controls the pressure module to communicate with the liquid pump, the control module is further used to control the first valve body to open, so as to provide the first pressure to the liquid pump through the first tank body and the second tank body; control the pressure module to stop providing the first pressure to the liquid pump, and at least control the pressure in the first tank body and the second tank body to be released; At least when the first tank body and the second tank body have released all the pressure, the control module is used to control the first valve body and the second valve body to close.

8. The cleaning device according to claim 6, characterized in that: The cleaning module includes a liquid storage tank, a third valve body, a first pool body, a first three-way joint and a fourth valve body. The liquid inlet of the first pool body is connected to the liquid storage tank through the third valve body, the first outlet and the second outlet of the first pool body are respectively connected to the first port and the second port of the first three-way joint, and the common port of the first three-way joint is connected to the second port of the first tank body through the fourth valve body.

9. The cleaning device according to claim 8, characterized in that: When the control module controls the cleaning module to be connected to the liquid pump, the third valve body, the fourth valve body and the first valve body are controlled to be opened, and the cleaning liquid cleans the liquid pump via the liquid storage tank, the third valve body, the liquid inlet, the first tank body, the second outlet, the fourth valve body, the first tank body and the first valve body; When the liquid pump is cleaned, the control module is used to control the third valve body, the fourth valve body and the first valve body to close.

10. The cleaning device according to claim 9, characterized in that: After the cleaning device cleans the liquid pump, the first pool body is further used to prepare and store samples to be tested so that the samples to be tested can be tested, and the first tank body is further used to transport samples that have completed testing.

11. The cleaning device according to claim 10, characterized in that: After the first cell body completes preparing the test sample, the control module controls the fourth valve body to open, and the test sample enters the first tank body through the fourth valve body.

12. The cleaning device according to claim 8, characterized in that: The cleaning module also includes a fifth valve body and a second three-way joint. The liquid storage tank is connected to the first port of the second three-way joint through the third valve body, the second port of the second three-way joint is connected to the liquid inlet of the first tank body, and the third port of the second three-way joint is connected to the third port of the first tank body through the fifth valve body.

13. The cleaning device according to claim 12, characterized in that: When the control module controls the cleaning module to be connected to the liquid pump, the control module is used to control the third valve body, the fifth valve body and the first valve body to open, and the cleaning liquid cleans the liquid pump via the liquid storage tank, the third valve body, the second three-way joint, the fifth valve body, the first tank body and the first valve body; When the liquid pump is cleaned, the control module is used to control the third valve body, the fifth valve body and the first valve body to close.

14. The cleaning device according to claim 12, characterized in that: The flow rate of the cleaning liquid passing through the fourth valve body is greater than the flow rate of the cleaning liquid passing through the fifth valve body.

15. The cleaning device according to any one of claims 2 to 14, characterized in that: The cleaning device comprises a pressure relief module, the pressure relief module comprises a sixth valve body and an air filter device, and the air filter device is connected to the fourth port of the first tank body through the sixth valve body; After the pressure module stops providing the first pressure to the liquid pump for the second time, the control module is used to control the sixth valve body to open, so as to release the pressure of at least the first tank body and the second tank body.

16. A blood analyzer, characterized in that: It comprises a sample preparation module, a detection module and a cleaning device as described in any one of claims 1 to 14, wherein the sample preparation module is used to: provide sample liquid to the first pool body in the cleaning device, and prepare a sample to be detected based on the sample liquid; the detection module is used to perform sample detection on the sample to be detected, and the cleaning device is used to clean the components and liquid circuits inside the blood analyzer.

17. A cleaning method, applied to the cleaning device according to any one of claims 1 to 14, characterized in that: The method comprises: Controlling the pressure module to communicate with the liquid pump so that the pressure module provides a first pressure to the liquid pump, thereby pushing the diaphragm of the liquid pump; The cleaning module is controlled to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump, thereby cleaning the liquid pump.

18. The cleaning method according to claim 17, characterized in that: After the step of controlling the cleaning module to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump and then cleans the liquid pump, the cleaning method further includes: The pressure module is controlled to provide the first pressure to the liquid pump for a second time, so as to remove the cleaning liquid in the liquid pump.

19. The cleaning method according to claim 17, characterized in that: The step of controlling the cleaning module to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump and then cleaning the liquid pump comprises: The third valve body, the fourth valve body and the first valve body are controlled to open so that the cleaning liquid in the liquid storage tank can enter the liquid pump through the first tank body to clean the first tank body and the liquid pump.

20. The cleaning method according to claim 17, characterized in that: The step of controlling the cleaning module to communicate with the liquid pump so that the cleaning module provides the cleaning liquid to the liquid pump and then cleaning the liquid pump further includes: The third valve body, the fifth valve body and the first valve body are controlled to open so that the cleaning liquid in the liquid storage tank directly enters the liquid pump to clean the liquid pump.

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