Printer printhead ink path cleaning system

Abstract

The application discloses a printer nozzle ink path cleaning system, which comprises a cleaning pool for placing a nozzle, the cleaning pool being provided with a water inlet and a water outlet; a first cleaning connector and a second cleaning connector, both of which are installed on the cleaning pool, the first cleaning connector being connected with an ink inlet, and the second cleaning connector being connected with an ink outlet; a cleaning liquid storage tank for storing cleaning liquid; a first pipeline connecting the cleaning liquid storage tank and the first cleaning connector; a second pipeline connecting the cleaning liquid storage tank and the second cleaning connector; and a third pipeline connecting the cleaning liquid storage tank and the water inlet. The printer nozzle ink path cleaning system of the embodiment of the application has rich circulation paths, good cleaning effect, and can realize automatic cleaning, thereby reducing the cleaning cost.

Description

Technical Field

[0001] This application relates to the technical field of inkjet printer printhead cleaning equipment, and in particular to a printer printhead ink path cleaning system. Background Technology

[0002] In the field of inkjet printing technology, the printhead, as a core executing component, typically has nozzles with apertures that are extremely small. This structural characteristic makes the nozzles susceptible to clogging due to the intrusion of foreign objects or the deposition of impurities in the ink itself, which in turn causes printhead malfunctions, manifesting as poor ejection phenomena such as slanted spraying and missed spraying, directly affecting print quality and equipment stability.

[0003] Especially for UV inkjet printers, the UV inks used have photocuring properties—under ultraviolet light irradiation, UV inks readily undergo a rapid curing reaction. The solid residue generated by the reaction adheres to the inner wall of the printhead's flow channels, which is not only difficult to remove naturally but also continues to accumulate, significantly increasing the risk of flow channel blockage and posing a more severe challenge to printhead lifespan and printing reliability.

[0004] Current nozzle cleaning solutions typically involve using a syringe to extract a special cleaning solution and injecting it into the nozzle's inlet and outlet under pressure. The solution uses hydraulic pressure to clear the flow channels, resulting in a single circulation path, limited cleaning effectiveness, and high labor costs due to low automation. Utility Model Content

[0005] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a printer printhead ink path cleaning system with rich circulation paths, good cleaning effect, automatic cleaning capability, and reduced cleaning costs.

[0006] The printer printhead ink path cleaning system according to an embodiment of this application includes: A cleaning tank for holding spray nozzles, the cleaning tank being provided with a water inlet and a water outlet; The first cleaning connector and the second cleaning connector are both installed in the cleaning tank. The first cleaning connector is connected to the ink inlet, and the second cleaning connector is connected to the ink outlet. Cleaning fluid storage tank, used to store cleaning fluid; The first pipe connects the cleaning fluid storage tank and the first cleaning connector; The second pipe connects the cleaning fluid storage tank and the second cleaning connector; The third pipe connects the cleaning fluid storage tank and the water inlet.

[0007] The printer printhead ink path cleaning system according to the embodiments of this application has at least the following beneficial effects: The cleaning fluid can circulate from the first pipe to the second pipe, or from the second pipe to the first pipe, or from the first pipe to the drain outlet, or from the second pipe to the drain outlet. There are multiple circulation cleaning methods, which makes it easy to arrange the cleaning steps reasonably according to the actual situation, thereby improving cleaning efficiency and quality. Multiple circulation methods can be flexibly preset, reducing manual labor and lowering the difficulty and cost of manual work.

[0008] In some embodiments of this application, the first pipeline is equipped with a first control valve to control the opening and closing of the first pipeline, and the second pipeline is equipped with a second control valve to control the opening and closing of the second pipeline. The ink path cleaning system further includes a fourth pipe and a fifth pipe. The fourth pipe is connected to the inlet end of the first control valve and the outlet end of the second control valve. The fifth pipe is connected to the outlet end of the first control valve and the inlet end of the second control valve. The fourth pipeline is equipped with a fourth control valve to control the on / off state of the fourth pipeline, and the fifth pipeline is equipped with a fifth control valve to control the on / off state of the fifth pipeline.

[0009] In some embodiments of this application, the first pipeline is equipped with a first pump body, and the first pump body and the first control valve are arranged sequentially along the flow direction from the cleaning fluid storage tank to the first cleaning connector. The second pipeline is equipped with a second pump body, and the second pump body and the second control valve are arranged in sequence along the flow direction from the cleaning fluid storage tank to the second cleaning connector; Along the flow direction from the cleaning fluid storage tank to the water inlet, the third pipeline is sequentially equipped with a third pump body and a one-way valve.

[0010] In some embodiments of this application, the drain outlet is connected to a sixth pipe, which is connected to the inlet end of the second pump body, and a sixth control valve is installed on the sixth pipe.

[0011] In some embodiments of this application, there are two cleaning fluid storage tanks, the first pipeline includes two first branch pipes, the two first branch pipes are respectively connected to the two cleaning fluid storage tanks, both first branch pipes are connected to the inlet end of the first pump body, and both first branch pipes are equipped with a seventh control valve. The second pipeline includes two second branch pipes, which are respectively connected to the two cleaning fluid storage tanks. Both second branch pipes are connected to the inlet end of the second pump body, and both second branch pipes are equipped with an eighth control valve. The third pipeline includes two third branch pipes, which are respectively connected to the two cleaning fluid storage tanks. Both third branch pipes are connected to the inlet end of the third pump body, and both third branch pipes are equipped with a third control valve.

[0012] In some embodiments of this application, the cleaning fluid storage tank includes: The tank defines a cavity for storing cleaning fluid, and the side wall of the cavity is provided with a detection window, which is made of transparent material. The tank lid is detachably connected to the tank body. The tank lid is equipped with a second liquid level sensor and multiple pipe joints. The second liquid level sensor detects the liquid level inside the tank. The multiple pipe joints are respectively connected to the first pipe, the second pipe, and the third pipe.

[0013] In some embodiments of this application, the can lid is sealed to the can body, and the can lid is provided with an air filter to connect the receiving cavity to the outside atmosphere.

[0014] In some embodiments of this application, the ink path cleaning system further includes a waste liquid tank, which is connected to the cleaning liquid storage tank via a wastewater pipe, and the wastewater pipe is equipped with a fourth pump body.

[0015] In some embodiments of this application, there are two cleaning fluid storage tanks, and the wastewater pipe includes two fourth branch pipes. The two fourth branch pipes are respectively connected to the two cleaning fluid storage tanks. Both fourth branch pipes are connected to the inlet end of the fourth pump body, and both fourth branch pipes are equipped with a ninth control valve.

[0016] In some embodiments of this application, the ink path cleaning system further includes a cleaning fluid original container, which is connected to the cleaning fluid storage tank via a supply pipe, and a fifth pump body and a filter are installed on the supply pipe.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the first loop path according to an embodiment of this application; Figure 2 This is a schematic diagram of the second loop path in an embodiment of this application; Figure 3 This is a schematic diagram of the third loop path in an embodiment of this application; Figure 4This is a schematic diagram of the fourth loop path in an embodiment of this application; Figure 5 This is a schematic diagram of the fifth loop path in an embodiment of this application; Figure 6 This is a schematic diagram of the sixth loop path in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the cleaning fluid storage tank in an embodiment of this application.

[0019] Icon labels: Cleaning tank 1000; First cleaning connector 2100, second cleaning connector 2200; Cleaning fluid storage tank 3100, tank body 3110, detection window 3111, tank cover 3120, second liquid level sensor 3121, pipe joint 3122, air filter 3123; First pipeline 3200, first control valve 3210, first pump body 3220, first branch pipe 3230, seventh control valve 3231; Second pipeline 3300, second control valve 3310, second pump body 3320, second branch pipe 3330, eighth control valve 3331; Third pipeline 3400, third control valve 3410, third pump body 3420, one-way valve 3430, third branch pipe 3440; Fourth pipe 3500, fourth control valve 3510; Fifth pipeline 3600, fifth control valve 3610; Sixth pipeline 3700, sixth control valve 3710; Waste liquid tank 3800, wastewater pipe 3810, fourth pump body 3811, fourth branch pipe 3820, ninth control valve 3821; Cleaning fluid original container 3900, liquid supply pipe 3910, fifth pump body 3911. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0023] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0024] Reference Figures 1 to 7 This application discloses an ink path cleaning system, including a cleaning tank 1000. The cleaning tank 1000 has a water inlet and a drain outlet. The cleaning tank 1000 is equipped with a first cleaning connector 2100 and a second cleaning connector 2200. The first cleaning connector 2100 is connected to the ink inlet of the printhead, and the second cleaning connector 2200 is connected to the ink outlet of the printhead. The printhead cleaned in this embodiment has three interconnected positions: an ink inlet, an ink outlet, and an ink jet nozzle. Both the ink inlet and the ink outlet can be connected to pipelines, while the ink jet nozzle is formed by multiple ink outlet holes, therefore the ink jet nozzle cannot be connected to a pipeline. The ink jet nozzle is prone to clogging. During cleaning, the ink jet nozzle is usually immersed in the cleaning solution in the cleaning tank 1000, while the ink inlet and the ink outlet do not need to be immersed in the cleaning solution.

[0025] In some embodiments of this application, the ink path cleaning system includes a cleaning fluid storage tank 3100, a first pipe 3200, a second pipe 3300, and a third pipe 3400. The cleaning fluid storage tank 3100 is used to store cleaning fluid. The first pipe 3200 connects the cleaning fluid storage tank 3100 and a first cleaning connector 2100. The second pipe 3300 connects the cleaning fluid storage tank 3100 and a second cleaning connector 2200. The third pipe 3400 connects the cleaning fluid storage tank 3100 and a water inlet.

[0026] Reference Figures 1 to 6As shown, the first pipe 3200 is equipped with a first pump body 3220, the second pipe 3300 is equipped with a second pump body 3320, and the third pipe 3400 is equipped with a third pump body 3420. The third pump body 3420 is used to pump the cleaning fluid in the cleaning fluid storage tank 3100 into the cleaning tank 1000. The first pump body 3220 is used to pump the cleaning fluid in the cleaning fluid storage tank 3100 into the ink inlet of the printhead through the first cleaning connector 2100, or to pump the cleaning fluid in the cleaning tank 1000 into the cleaning fluid storage tank 3100 sequentially through the inkjet nozzle, the ink inlet, and the first cleaning connector 2100. The second pump body 3320 is used to pump the cleaning fluid in the cleaning fluid storage tank 3100 into the ink outlet of the printhead through the second cleaning connector 2200, or to pump the cleaning fluid in the cleaning tank 1000 into the cleaning fluid storage tank 3100 sequentially through the inkjet nozzle, the ink outlet, and the second cleaning connector 2200.

[0027] In some specific embodiments of this application, the first pump body 3220 and the second pump body 3320 are typically gear pumps, and the third pump body 3420 is typically a diaphragm pump. The unit flow rate of the gear pump is greater than that of the diaphragm pump, and the cost of the gear pump is also greater than that of the diaphragm pump. The first pump body 3220 and the second pump body 3320 are gear pumps, which can clean the inside of the nozzle through a large flow flushing function. However, the third pump body 3420 can only supply water to the cleaning tank 1000 and cannot have a rinsing effect on the nozzle. Therefore, setting the third pump body 3420 as a diaphragm pump will not affect the cleaning efficiency of the nozzle and can effectively reduce the equipment cost.

[0028] In some specific embodiments of this application, both the first pipe 3200 and the second pipe 3300 are equipped with filters, which are installed at the outlet ends of the first pump body 3220 and the second pump body 3320. The first pipe 3200 is equipped with a first control valve 3210 to control the opening and closing of the first pipe 3200, and the second pipe 3300 is equipped with a second control valve 3310 to control the opening and closing of the second pipe 3300. The first control valve 3210 is installed at the outlet end of the first pump body 3220, and the second control valve 3310 is installed at the outlet end of the second pump body 3320. To prevent backflow of water in the cleaning tank 1000, the third pipe 3400 is equipped with a one-way valve 3430, which is installed at the outlet end of the third pump body 3420.

[0029] In some embodiments of this application, the ink path cleaning system further includes a fourth pipe 3500 and a fifth pipe 3600. The fourth pipe 3500 is connected to the inlet end of the first control valve 3210 and the outlet end of the second control valve 3310; the fifth pipe 3600 is connected to the outlet end of the first control valve 3210 and the inlet end of the second control valve 3310; the fourth pipe 3500 is equipped with a fourth control valve 3510 to control the on / off state of the fourth pipe 3500, and the fifth pipe 3600 is equipped with a fifth control valve 3610 to control the on / off state of the fifth pipe 3600.

[0030] In some embodiments of this application, a sixth pipe 3700 is connected to the drain outlet, the sixth pipe 3700 is connected to the second pipe 3300, and the sixth pipe 3700 is connected to the inlet end of the second pump body 3320; a sixth control valve 3710 is installed on the sixth pipe 3700 to control the opening and closing of the sixth pipe 3700.

[0031] In some embodiments of this application, reference is made to Figures 1 to 6 As shown, there are two cleaning fluid storage tanks 3100. The two cleaning fluid storage tanks 3100 can be used to store cleaning fluids of different concentrations or types to suit different cleaning objects or cleaning steps.

[0032] Accordingly, the first pipeline 3200 includes two first branch pipes 3230, which are respectively connected to two cleaning fluid storage tanks 3100. Each of the two first branch pipes 3230 is equipped with a seventh control valve 3231, and both are connected to the inlet end of the first pump body 3220. The second pipeline 3300 includes two second branch pipes 3330, which are respectively connected to the two cleaning fluid storage tanks 3100. Both second branch pipes 3330 are equipped with an eighth control valve 3331, and both second branch pipes 3330 are connected to the inlet end of the second pump body 3320; the third pipeline 3400 includes two third branch pipes 3440, which are respectively connected to two cleaning fluid storage tanks 3100, both third branch pipes 3440 are equipped with a third control valve 3410, and both third branch pipes 3440 are connected to the inlet end of the third pump body 3420.

[0033] The ink path cleaning system of this application embodiment, through the layout of the above structure, can form six different circulation modes to clean the printhead. The six circulation modes are as follows: 1. Circulation from the ink inlet to the ink outlet of the printhead, refer to... Figure 1As shown: The cleaning fluid in the cleaning fluid storage tank 3100 enters the first pipeline 3200 through the first branch pipe 3230, and then enters the ink inlet of the printhead through the first pump body 3220, filter, first control valve 3210, and first cleaning connector 2100; then it enters the second pipeline 3300 through the ink outlet of the printhead and the second cleaning connector 2200, and then enters the second branch pipe 3330 through the second control valve 3310, filter, and second pump body 3320, and flows back to the cleaning fluid storage tank 3100; in this cycle, the first control valve 3210, the second control valve 3310, the seventh control valve 3231, and the eighth control valve 3331 are open, while the third control valve 3410, the fourth control valve 3510, the fifth control valve 3610, and the sixth control valve 3710 are closed; II. Circulation from ink outlet to ink inlet of the printhead, refer to... Figure 2 As shown: The cleaning fluid in the cleaning fluid storage tank 3100 enters the first pipeline 3200 through the first branch pipe 3230, then enters the fourth pipeline 3500 through the first pump body 3220 and the filter, and then enters the second pipeline 3300 through the fourth control valve 3510, and then enters the ink outlet of the printhead through the second cleaning connector 2200; then it enters the first pipeline 3200 through the ink inlet of the printhead and the first cleaning connector 2100, then enters the fifth pipeline 3600 through the first pipeline 3200, enters the second pipeline 3300 through the fifth control valve 3610, flows through the filter and the second pump body 3320, enters the second branch pipe 3330, and flows back to the cleaning fluid storage tank 3100; in this cycle, the fourth control valve 3510, the fifth control valve 3610, the seventh control valve 3231 and the eighth control valve 3331 are open, and the first control valve 3210, the second control valve 3310, the third control valve 3410 and the sixth control valve 3710 are closed; III. Circulation from printhead inlet to printhead outlet (refer to...) Figure 3 As shown: The cleaning fluid in the cleaning fluid storage tank 3100 enters the first pipeline 3200 through the first branch pipe 3230, and then enters the ink inlet of the printhead through the first pump body 3220, filter, first control valve 3210, and first cleaning connector 2100; then it enters the cleaning tank 1000 through the ink nozzle of the printhead, and enters the sixth pipeline 3700 through the drain outlet of the cleaning tank 1000, flows through the sixth control valve 3710 and filter, and then enters the second pipeline 3300, and then enters the second branch pipe 3330, and flows back to the cleaning fluid storage tank 3100; in this cycle, the first control valve 3210, the sixth control valve 3710, the seventh control valve 3231 and the eighth control valve 3331 are open, and the second control valve 3310, the third control valve 3410, the fourth control valve 3510 and the fifth control valve 3610 are closed; IV. Circulation from the ink outlet of the printhead to the ink jet nozzle, refer to... Figure 4As shown: The cleaning fluid in the cleaning fluid storage tank 3100 enters the first pipeline 3200 through the first branch pipe 3230, then enters the fourth pipeline 3500 through the first pump body 3220 and the filter, then enters the second pipeline 3300 through the fourth control valve 3510, and then enters the ink outlet of the printhead through the second cleaning connector 2200; then it enters the cleaning tank 1000 through the ink nozzle of the printhead, and enters the sixth pipeline 3700 through the drain outlet of the cleaning tank 1000, flows through the sixth control valve 3710 and the filter, then enters the second pipeline 3300, and then enters the second branch pipe 3330, and flows back to the cleaning fluid storage tank 3100; in this cycle, the fourth control valve 3510, the sixth control valve 3710, the seventh control valve 3231 and the eighth control valve 3331 are open, and the first control valve 3210, the second control valve 3310, the third control valve 3410 and the fifth control valve 3610 are closed; V. Circulation from the printhead ink nozzle to the ink inlet, refer to... Figure 5 As shown: The cleaning fluid in the cleaning fluid storage tank 3100 enters the third pipeline 3400 through the third branch pipe 3440, and then enters the cleaning tank 1000 through the third pump body 3420 and the one-way valve 3430; then it enters the first cleaning connector 2100 through the ink inlet of the printhead, and enters the first pipeline 3200, then the fifth pipeline 3600 through the first pipeline 3200, and enters the second pipeline 3300 through the fifth control valve 3610. After flowing through the filter and the second pump body 3320, it enters the second branch pipe 3330 and flows back to the cleaning fluid storage tank 3100. In this cycle, the third control valve 3410, the fifth control valve 3610 and the eighth control valve 3331 are open, and the first control valve 3210, the second control valve 3310, the fourth control valve 3510, the sixth control valve 3710 and the seventh control valve 3231 are closed. VI. The ink circulation from the printhead nozzle to the ink outlet is as follows: Figure 6 As shown: The cleaning fluid in the cleaning fluid storage tank 3100 enters the third pipeline 3400 through the third branch pipe 3440, and then enters the cleaning tank 1000 through the third pump body 3420 and the one-way valve 3430; then it enters the second cleaning connector 2200 through the ink outlet of the printhead, and enters the second pipeline 3300, flows through the second control valve 3310, the filter, and the second pump body 3320, and then enters the second branch pipe 3330, and flows back to the cleaning fluid storage tank 3100; in this cycle, the second control valve 3310, the third control valve 3410 and the eighth control valve 3331 are open, and the first control valve 3210, the fourth control valve 3510, the fifth control valve 3610, the sixth control valve 3710 and the seventh control valve 3231 are closed.

[0034] In the actual cleaning process of the nozzle, one or more of the above-mentioned circulation paths can be used to clean the nozzle, or a reasonable sequence of circulation paths can be used. This embodiment does not impose any limitations.

[0035] In some embodiments of this application, the ink cleaning system further includes a waste liquid tank 3800, which is connected to a cleaning fluid storage tank 3100 via a wastewater pipe 3810. A fourth pump body 3811 is installed on the wastewater pipe 3810. Specifically, refer to 1 to... Figure 6 As shown, both cleaning fluid storage tanks 3100 are connected to the waste fluid tank 3800. The wastewater pipe 3810 includes two fourth branch pipes 3820, each equipped with a ninth control valve 3821. The fourth pump body 3811 can be a low-cost diaphragm pump. When the cleaning fluid in the cleaning fluid storage tank 3100 becomes dirty after circulating a certain number of times, it needs to be replaced. In this case, the dirty cleaning fluid in the cleaning fluid storage tank 3100 needs to be pumped to the waste fluid tank 3800 first.

[0036] In some embodiments of this application, the ink path cleaning system further includes a cleaning fluid original container 3900, which is connected to a cleaning fluid storage tank 3100 via a supply pipe 3910. A fifth pump body 3911 and a filter are installed on the supply pipe 3910. Specifically, refer to 1 to Figure 6 As shown, the number of original cleaning solution containers 3900 corresponds to the number of cleaning solution storage tanks 3100. Typically, two cleaning solution storage tanks 3100 are used to store cleaning solutions of different concentrations; therefore, two original cleaning solution containers 3900 of different concentrations are correspondingly provided. The fifth pump body 3911 is preferably a low-cost diaphragm pump, used to pump the cleaning solution from the original cleaning solution containers 3900 to the cleaning solution storage tanks 3100.

[0037] In some embodiments of this application, reference is made to Figure 7 As shown, the cleaning fluid storage tank 3100 includes a tank body 3110 and a tank cover 3120. The tank body 3110 defines a cavity for storing the cleaning fluid. The side wall of the cavity is provided with a detection window 3111, which is made of transparent material. The tank cover 3120 is detachably connected to the tank body 3110. The tank cover 3120 is equipped with a second liquid level sensor 3121 and multiple pipe joints 3122. The second liquid level sensor 3121 detects the liquid level in the tank body 3110. The multiple pipe joints 3122 are respectively connected to the first pipe 3200, the second pipe 3300, and the third pipe 3400, and redundant pipe joints 3122 are also reserved.

[0038] In some embodiments of this application, the can lid 3120 and the can body 3110 are sealed together by fasteners such as bolts. The can lid 3120 is provided with an air filter 3123 to connect the containment cavity with the outside atmosphere, so as to avoid contamination of the cleaning fluid stored in the containment cavity by impurities in the air.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine the different embodiments or examples described in this specification.

[0040] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A printer printhead ink path cleaning system for cleaning the printhead of a printer, the printhead comprising an ink inlet, an ink outlet, and an ink jet nozzle; characterized in that, include: A cleaning tank for holding spray nozzles, the cleaning tank being provided with a water inlet and a water outlet; The first cleaning connector and the second cleaning connector are both installed in the cleaning tank. The first cleaning connector is connected to the ink inlet, and the second cleaning connector is connected to the ink outlet. Cleaning fluid storage tank, used to store cleaning fluid; The first pipe connects the cleaning fluid storage tank and the first cleaning connector; The second pipe connects the cleaning fluid storage tank and the second cleaning connector; The third pipe connects the cleaning fluid storage tank and the water inlet.

2. The printer printhead ink path cleaning system according to claim 1, characterized in that, The first pipeline is equipped with a first control valve to control the opening and closing of the first pipeline, and the second pipeline is equipped with a second control valve to control the opening and closing of the second pipeline; The ink path cleaning system further includes a fourth pipe and a fifth pipe. The fourth pipe is connected to the inlet end of the first control valve and the outlet end of the second control valve; the fifth pipe is connected to the outlet end of the first control valve and the inlet end of the second control valve. The fourth pipeline is equipped with a fourth control valve to control the on / off state of the fourth pipeline, and the fifth pipeline is equipped with a fifth control valve to control the on / off state of the fifth pipeline.

3. The printer printhead ink path cleaning system according to claim 2, characterized in that, The first pipeline is equipped with a first pump body, and the first pump body and the first control valve are arranged sequentially along the flow direction from the cleaning fluid storage tank to the first cleaning connector. The second pipeline is equipped with a second pump body, and the second pump body and the second control valve are arranged in sequence along the flow direction from the cleaning fluid storage tank to the second cleaning connector; Along the flow direction from the cleaning fluid storage tank to the water inlet, the third pipeline is sequentially equipped with a third pump body and a one-way valve.

4. The printer printhead ink path cleaning system according to claim 3, characterized in that, The drain outlet is connected to a sixth pipe, which is connected to the inlet end of the second pump body, and a sixth control valve is installed on the sixth pipe.

5. The printer printhead ink path cleaning system according to claim 3, characterized in that, The cleaning fluid storage tank is provided in two parts. The first pipeline includes two first branch pipes, which are respectively connected to the two cleaning fluid storage tanks. Both first branch pipes are connected to the inlet end of the first pump body, and both first branch pipes are equipped with a seventh control valve. The second pipeline includes two second branch pipes, which are respectively connected to the two cleaning fluid storage tanks. Both second branch pipes are connected to the inlet end of the second pump body, and both second branch pipes are equipped with an eighth control valve. The third pipeline includes two third branch pipes, which are respectively connected to the two cleaning fluid storage tanks. Both third branch pipes are connected to the inlet end of the third pump body, and both third branch pipes are equipped with a third control valve.

6. The printer printhead ink path cleaning system according to claim 1, characterized in that, The cleaning fluid storage tank includes: The tank defines a cavity for storing cleaning fluid, and the side wall of the cavity is provided with a detection window, which is made of transparent material. The tank lid is detachably connected to the tank body. The tank lid is equipped with a second liquid level sensor and multiple pipe joints. The second liquid level sensor detects the liquid level inside the tank. The multiple pipe joints are respectively connected to the first pipe, the second pipe, and the third pipe.

7. The printer printhead ink path cleaning system according to claim 6, characterized in that, The can lid is sealed to the can body, and the can lid is equipped with an air filter to connect the containment cavity to the outside atmosphere.

8. The printer printhead ink path cleaning system according to claim 1, characterized in that, The ink cleaning system also includes a waste liquid tank, which is connected to the cleaning liquid storage tank via a wastewater pipe, and a fourth pump is installed on the wastewater pipe.

9. The printer printhead ink path cleaning system according to claim 8, characterized in that, The cleaning fluid storage tank is provided in two places. The wastewater pipe includes two fourth branch pipes, which are respectively connected to the two cleaning fluid storage tanks. Both fourth branch pipes are connected to the inlet end of the fourth pump body, and both fourth branch pipes are equipped with a ninth control valve.

10. The printer printhead ink path cleaning system according to claim 1, characterized in that, The ink cleaning system also includes a cleaning fluid original container, which is connected to the cleaning fluid storage tank via a supply pipe. A fifth pump and a filter are installed on the supply pipe.

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