Perovskite ink jet equipment
By designing an independent ink path system and buffer box structure in the perovskite inkjet equipment, the problems of cumbersome solution switching and air bubble introduction have been solved, improving printing efficiency and quality and simplifying the operation process.
Patent Information
- Application Number
- CN202520034334.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing perovskite inkjet equipment is cumbersome and time-consuming when switching solutions, consumes a lot of solution, and is prone to introducing air bubbles, resulting in a decline in print quality.
The design incorporates independent first and second ink paths, including first and second ink pipes, an ink supply pump, a buffer box, and a printhead. The buffer box is designed to stabilize the ink flow rate and prevent the introduction of air bubbles. The pipes are cleaned using a nitrogen source and a solvent cleaning bottle to ensure stable ink flow and print quality.
It enables rapid solution switching, reduces bubble introduction, improves inkjet printing efficiency and quality, reduces solution consumption, and simplifies equipment operation.
Smart Images
Figure CN223605327U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to photovoltaic manufacturing technical field especially relates to a perovskite inkjet equipment. BACKGROUND
[0002] The perovskite inkjet equipment is applied to the preparation process of perovskite solar cell, through the precise inkjet printing technology, the liquid perovskite precursor solution is uniformly deposited in the form of tiny droplets on the substrate, and the high-quality perovskite thin film is formed.
[0003] The existing perovskite inkjet equipment usually adopts single-ink-path system control, and there are problems of long single-process time and complicated preparation work before inkjet printing. When frequently switching different solutions for experiment, time and effort are consumed, and the efficiency of scientific research and production is affected.
[0004] There are also perovskite inkjet equipment that adopts multi-ink-path integrated system control, which can realize rapid switching of multiple solutions, but the solution consumption is large, air bubbles are easily introduced, and the printing quality is reduced. In addition, after switching the solution, the multi-ink-path system needs to wait for a long time for the solution in the pipeline to stabilize, and the printing state is ready for a long time, further reducing the use efficiency of the equipment. SUMMARY
[0005] The utility model provides perovskite inkjet equipment, aims at solving the problem of complicated solution switching, long time consumption, large solution consumption and easy introduction of air bubbles of the existing perovskite inkjet equipment, which leads to the problem of reduced printing quality.
[0006] The utility model is realized in this way, a kind of perovskite inkjet equipment, including first ink path and second ink path;
[0007] The first ink path includes first ink bottle, first ink supply pump, first buffer box, first secondary ink box and first nozzle connected in sequence by first ink conveying pipeline;
[0008] The second ink path includes second ink bottle, second ink supply pump, second buffer box, second secondary ink box and second nozzle connected in sequence by second ink conveying pipeline.
[0009] Optionally, the first ink path further includes first circulating ink box and first circulating pump in communication with each other, wherein the first circulating pump is in communication with the first secondary ink box, and the first circulating ink box is in communication with the first nozzle.
[0010] Optionally, liquid level sensors are arranged on the first circulating ink box and the first secondary ink box respectively, and the liquid level sensors are signal-connected with the first circulating pump.
[0011] Optionally, the second ink path further comprises a second circulating ink tank and a second circulating pump in communication with each other, wherein the second circulating pump is in communication with the second secondary ink tank, and the second circulating ink tank is in communication with the second inkjet head.
[0012] Optionally, a liquid level sensor is arranged on the second circulating ink tank and the second secondary ink tank respectively, and the liquid level sensor is in signal connection with the second circulating pump.
[0013] Optionally, the first nitrogen source and a first nitrogen pipeline connected with the first nitrogen source are further included, the first nitrogen pipeline is in communication with the first ink feeding pipeline near the position of the first ink bottle through a first switch valve, and a first pressure reducing valve is further arranged on the first nitrogen pipeline.
[0014] Optionally, the second nitrogen source and a second nitrogen pipeline connected with the second nitrogen source are further included, the second nitrogen pipeline is in communication with the second ink feeding pipeline near the position of the second ink bottle through a second switch valve, and a second pressure reducing valve is further arranged on the second nitrogen pipeline.
[0015] Optionally, a cleaning solvent bottle and a cleaning pipeline are further included, and the cleaning pipeline is in communication with the first switch valve.
[0016] Optionally, a cleaning solvent bottle and a cleaning pipeline are further included, and the cleaning pipeline is in communication with the first switch valve and the second switch valve respectively.
[0017] Optionally, the first switch valve is an electromagnetic valve.
[0018] Optionally, the first switch valve and the second switch valve are both electromagnetic valves.
[0019] The first ink path and the second ink path are independent of each other, and no communication passage is arranged between the first ink path and the second ink path, so that the first ink path and the second ink path are prevented from interfering with each other. The first buffer tank is arranged between the first ink feeding pump and the first secondary ink tank, and the second buffer tank is arranged between the second ink feeding pump and the second secondary ink tank, so that the design of the buffer tank reduces the violent fluctuation of liquid supply, reduces the introduction of air bubbles into the secondary ink tank, ensures the stability of the ink flow rate, and guarantees the quality of inkjet printing. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a pipeline connection diagram of the perovskite inkjet equipment provided by the utility model;
[0021] Figure 2 is another pipeline connection diagram of the perovskite inkjet equipment provided by the utility model.
[0022] MARK NO.
[0023] 111, first ink bottle; 112, first ink supply pump; 113, first buffer box; 114, first secondary ink box; 115, first nozzle; 116, first circulating ink box; 117, first circulating pump; 118, first on-off valve; 119, first ink passage; 121, second ink bottle; 122, second ink supply pump; 123, second buffer box; 124, second secondary ink box; 125, second nozzle; 126, second circulating ink box; 127, second circulating pump; 128, second on-off valve; 129, second ink passage; 131, first nitrogen source; 132, first pressure reducing valve; 133, first nitrogen passage; 141, second nitrogen source; 142, second pressure reducing valve; 143, second nitrogen passage; 151, cleaning solvent bottle; 152, cleaning passage. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the following further describes the present application in conjunction with the accompanying drawings and embodiments. The embodiments shown in the drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application. In addition, it should be understood that the specific embodiments described herein are only used to explain the present application and cannot be used to limit the present application.
[0025] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.
[0027] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or it can be detachable connection, or it can be integrally connected, it can be mechanical connection, or it can be electrical connection or it can be mutual communication, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction relationship between two elements, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0028] In the utility model, unless there are explicit provisions and limitations, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them.Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0029] The following disclosure provides many different embodiments or examples for implementing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can refer to the same reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.
[0030] The utility model discloses a first ink path and second ink path are set respectively, first ink path and second ink path are independent of each other, and there is no communication passage between the two, which avoids the mutual interference between first ink path and second ink path.In addition, a first buffer box is arranged between the first ink supply pump and the first secondary ink cartridge, and a second buffer box is arranged between the second ink supply pump and the second secondary ink cartridge, the design of the buffer box reduces the violent fluctuation of the liquid supply, reduces the introduction of air bubbles into the secondary ink cartridge, ensures the stability of the ink flow rate, and ensures the quality of inkjet printing.
[0031] Example One
[0032] As Figure 1 The utility model provides a kind of perovskite inkjet equipment, including first ink path and second ink path;
[0033] The first ink path includes, connected in sequence through the first ink conveying pipeline 119: the first ink bottle 111, the first ink supply pump 112, the first buffer box 113, the first secondary ink box 144, and the first nozzle 115.
[0034] The second ink path includes, connected in sequence through the second ink conveying pipeline 129: the second ink bottle 112, the second ink supply pump 122, the second buffer box 123, the second secondary ink box, and the second nozzle 125.
[0035] The first ink bottle 111 and the second ink bottle 112 serve as ink storage containers and are used to store ink respectively. Specifically, the first ink bottle 111 and the second ink bottle 112 can be used to contain ink of different materials, for example, the first ink bottle 111 contains perovskite solution, and the second ink bottle 112 contains hole transport layer material solution or electron transport layer material solution. This facilitates the inkjet manufacturing of multiple functional layers of perovskite batteries.
[0036] The first ink supply pump 112 and the second ink supply pump 122 are used to extract ink from the corresponding ink bottle and convey it to the subsequent components through the pipeline. The ink supply pump can ensure the pressure and speed of ink conveying, ensuring the quality of printing.
[0037] The first buffer box 113 and the second buffer box 123: buffer the ink conveyed by the ink supply pump. After being pumped by the ink supply pump, the ink has a high flow rate. The buffer box is used to buffer the high-flow-rate ink, so that the flow rate of the ink is reduced, ensuring the stability of the ink flow rate and reducing the printing quality problems caused by uneven ink conveying.
[0038] Generally, the buffer box is a closed cavity with a large volume to accommodate a certain amount of ink, ensuring continuous supply of ink during nozzle spraying. The buffer box is usually provided with a pressure regulating device to ensure stable pressure in the buffer box. Specifically, a pressure sensor and a controller can be installed. The pressure sensor is used to monitor the pressure in the box in real time, and the controller adjusts the ink feeding speed of the ink supply pump according to the pressure parameter detected by the pressure sensor to maintain the stability of the pressure in the box. A gas pressure balance hole or valve can also be provided on the buffer box to balance the pressure in the box by introducing a certain amount of air to prevent uneven ink flow caused by pressure fluctuations.
[0039] The inside of the buffer box can be provided with a partition plate to reduce turbulence and fluctuations of the ink and ensure stable flow of the ink. A filter can also be provided inside the buffer box. The built-in filter can remove particles and impurities from the ink, and also slow down the flow rate of the ink.
[0040] The liquid inlet of the buffer box is usually arranged at the bottom of the box, and the liquid outlet is arranged at the top of the box or near the top of the box to ensure that the ink is fully decelerated.
[0041] The first secondary ink cartridge 144 and the second secondary ink cartridge 124 are also called auxiliary ink cartridges or storage ink cartridges, which are used to further store the ink delivered by the buffer cartridges, and are in communication with the nozzles to directly supply ink to the nozzles, so as to ensure that the nozzles have sufficient ink supply during printing. Meanwhile, the secondary ink cartridges can also stabilize the pressure of the ink, so as to ensure the continuity and stability of the ink during printing.
[0042] The first nozzle 115 and the second nozzle 125 are both used to spray ink onto a printing medium. In the perovskite inkjet device, each nozzle usually corresponds to one type of ink, and printing jobs of different inks can be simultaneously performed.
[0043] The first nozzle 115 and the second nozzle 125 both adopt a multi-nozzle design, and a plurality of nozzles are uniformly distributed on the nozzles, and the plurality of nozzles spray at the same time to realize more uniform and efficient material deposition. A heating element can also be embedded in the inside of the nozzle, and the viscosity of the spraying solution is adjusted by controlling the heating temperature to ensure good fluidity of the spraying solution.
[0044] Specifically, the nozzle for spraying the perovskite solution usually has a nozzle diameter of 20-100 microns and can be made of ceramic or stainless steel material. The nozzle for spraying the hole transport layer material usually has a nozzle diameter of 10-50 microns and can be made of polytetrafluoroethylene (PTFE) material, which has anti-sticking property and good chemical stability. The nozzle for spraying the electron transport layer material usually has a nozzle diameter of 10-30 microns and can be made of stainless steel material. The first nozzle 115 and the second nozzle 125 are detachably connected with the first ink channel 119 and the second ink channel 129, respectively, so that the nozzles can be replaced according to different spraying materials to ensure the spraying effect.
[0045] In the utility model, first ink path and second ink path are arranged respectively, first ink path and second ink path are independent of each other, and there is no communication passage between the two, which avoids mutual interference between first ink path and second ink path. First buffer cartridge 113 is arranged between first ink supply pump 112 and first secondary ink cartridge 144, and second buffer cartridge 123 is arranged between second ink supply pump 122 and second secondary ink cartridge 124, so that the design of the buffer cartridge reduces the violent fluctuation of the liquid supply, reduces the introduction of bubbles into the secondary ink cartridge, ensures the stability of the ink flow rate, and ensures the quality of inkjet printing.
[0046] In some embodiments, the nozzles on the first nozzle 115 and the second nozzle 125 can be set as adjustable nozzles. On the one hand, the size of the nozzles can be adjusted according to the requirements of different spraying solutions to adapt to the spraying requirements of different spraying materials. On the other hand, the adjustable nozzles also facilitate the cleaning of the spraying materials attached to the nozzles, so as to avoid nozzle blockage.
[0047] Example Two
[0048] As Figure 2 shown, in some embodiments, the first ink path further comprises a first circulating ink tank 116 and a first circulating pump 117 which are in communication with each other, wherein the first circulating pump 117 is in communication with the first secondary ink tank 144, and the first circulating ink tank 116 is in communication with the first secondary ink tank 144.
[0049] The first secondary ink tank 144, the first inkjet head 115, the first circulating ink tank 116 and the first circulating pump 117 are connected in series to form a circulating loop, which ensures that the solution remains stable and uniform during the entire inkjet process, thereby improving the accuracy and reliability of the inkjet.
[0050] The amount of ink flowing out of the first secondary ink tank 144 needs to be greater than the amount of ink ejected by the first inkjet head 115 to ensure a certain ejection pressure when the first inkjet head 115 ejects ink. Therefore, part of the ink flowing out of the first secondary ink tank 144 is ejected by the first inkjet head 115, and the other part of the ink that is not ejected flows into the first circulating ink tank 116, which is used to store the excess ink that is not ejected by the first inkjet head 115. The first circulating pump 117 is arranged between the first circulating ink tank 116 and the first secondary ink tank 144, and is used to pump the ink in the first circulating ink tank 116 into the first secondary ink tank 144, so that the ink can be sent to the first inkjet head 115 again.
[0051] In some embodiments, liquid level sensors are arranged on the first secondary ink tank 144 and the first circulating ink tank 116, and the liquid level sensors on the first secondary ink tank 144 and the first circulating ink tank 116 are respectively signal connected with the first circulating pump 117. When the liquid level of the first secondary ink tank 144 is lower than a first preset value of the liquid level sensor arranged on the first secondary ink tank 144, a start control signal is sent, and the first circulating pump 117 is started to pump the ink in the first circulating ink tank 116 into the first secondary ink tank 144. When the liquid level of the first secondary ink tank 144 is higher than a second preset value of the liquid level sensor arranged on the first secondary ink tank 144, a stop control signal is sent, and the first circulating pump 117 stops working. At the same time, when the liquid level of the first circulating ink tank 116 is higher than a third preset value of the liquid level sensor arranged on the first circulating ink tank 116, a start control signal is sent, and the first circulating pump 117 is started to pump the ink in the first circulating ink tank 116 into the first secondary ink tank 144. When the liquid level of the first circulating ink tank 116 is lower than a fourth preset value of the liquid level sensor arranged on the first circulating ink tank 116, a stop control signal is sent, and the first circulating pump 117 stops working.
[0052] In the embodiment, the first secondary ink tank 144, the first nozzle 115, the first circulating ink tank 116 and the first circulating pump 117 are connected in series to form a circulating loop, and the first secondary ink tank 144 and the first circulating ink tank 116 are controlled to replenish liquid, so as to stabilize the amount of ink in the first secondary ink tank 144 and the first circulating ink tank 116, and ensure the printing effect of the first ink path.
[0053] Example Three
[0054] In some embodiments, the second ink path further comprises a second circulating ink tank 126 and a second circulating pump 127 which are connected in series, wherein the second circulating pump 127 is connected to the second secondary ink tank 124, and the second circulating ink tank 126 is connected to the second nozzle 125.
[0055] The second secondary ink tank 124, the second nozzle 125, the second circulating ink tank 126 and the second circulating pump 127 are connected in series to form a circulating loop, so as to ensure that the solution is stable and uniform during the entire inkjet process, and to improve the accuracy and reliability of the inkjet.
[0056] The amount of ink flowing out of the second secondary ink tank 124 needs to be greater than the amount of ink jetted by the second nozzle 125, so as to ensure a certain jetting pressure when the second nozzle 125 jets ink. Therefore, part of the ink flowing out of the second secondary ink tank 124 is jetted by the second nozzle 125, and the other part of the ink which is not jetted flows into the second circulating ink tank 126. The second circulating ink tank 126 is used to store the excess ink which is not jetted by the second nozzle 125. The second circulating pump 127 is arranged between the second circulating ink tank 126 and the second secondary ink tank 124, and is used to pump the ink in the second circulating ink tank 126 into the second secondary ink tank 124, so as to send the ink to the second nozzle 125 again.
[0057] In some embodiments, the second secondary ink cartridge 124 and the second circulating ink cartridge 126 are both provided with liquid level sensors, and the liquid level sensors on the second secondary ink cartridge 124 and the second circulating ink cartridge 126 are respectively connected with the second circulating pump 127. When the liquid level of the second secondary ink cartridge 124 is lower than the second preset value of the liquid level sensor provided on the second secondary ink cartridge 124, a start control signal is sent, and the second circulating pump 127 is started to pump the ink in the second circulating ink cartridge 126 into the second secondary ink cartridge 124; when the liquid level of the second secondary ink cartridge 124 is higher than the second preset value of the liquid level sensor provided on the second secondary ink cartridge 124, a stop control signal is sent, and the second circulating pump 127 stops working. At the same time, when the liquid level of the second circulating ink cartridge 126 is higher than the third preset value of the liquid level sensor provided on the second circulating ink cartridge 126, a start control signal is sent, and the second circulating pump 127 is started to pump the ink in the second circulating ink cartridge 126 into the second secondary ink cartridge 124; when the liquid level of the second circulating ink cartridge 126 is lower than the fourth preset value of the liquid level sensor provided on the second circulating ink cartridge 126, a stop control signal is sent, and the second circulating pump 127 stops working.
[0058] In the present embodiment, the second secondary ink cartridge 124, the second nozzle 125, the second circulating ink cartridge 126 and the second circulating pump 127 are connected in series to form a circulating loop, and the liquid supplement control of the second secondary ink cartridge 124 and the second circulating ink cartridge 126 is performed to ensure the stability of the ink amount in the second secondary ink cartridge 124 and the second circulating ink cartridge 126, so as to ensure the second ink path inkjet printing effect.
[0059] Example Four
[0060] In some embodiments, the first nitrogen source 131 and the first nitrogen pipeline 133 connected with the first nitrogen source 131 are included, the first nitrogen pipeline 133 is communicated with the first ink pipeline 119 near the first ink bottle 111 through the first switch valve 118, and the first nitrogen pipeline 133 is further provided with the first pressure reducing valve 132.
[0061] The first nitrogen source 131 is usually a high-pressure nitrogen cylinder or a nitrogen generator, which is used to provide stable high-pressure nitrogen for purging and cleaning the pipeline 152 and recovering the solution. The first nitrogen pipeline 133 is used to deliver nitrogen from the first nitrogen source 131 to various required positions.
[0062] The first switch valve 118 is a switch valve for controlling the nitrogen gas to enter the first ink channel 119. When the nitrogen gas channel and the first ink channel 119 are connected, the passage between the first ink bottle 111 and the first ink channel 119 is closed. When the passage between the nitrogen gas channel and the first ink channel 119 is closed, the first ink bottle 111 and the first ink channel 119 are connected. Specifically, it can be an electromagnetic valve or a starting valve, or other valves, which are not limited here.
[0063] The first pressure reducing valve 132 can adjust the output pressure as needed, which is used to reduce the high-pressure nitrogen gas to a pressure suitable for system use, to ensure the stability and safety of the nitrogen gas in the first nitrogen gas channel 133 and the first ink channel.
[0064] It can be understood that when the first nitrogen gas channel 133 and the first ink channel are connected, at this time, the first nozzle 115, the first ink supply pump 112 and the first circulating ink pump are all stopped working. The nitrogen gas provided by the first nitrogen source 131 enters the first ink channel 119 through the first nitrogen gas channel 133 and the first pressure reducing valve 132, and starts to blow from the position close to the first ink bottle 111. After the nitrogen gas enters the first ink channel 119, it pushes the remaining solution in the channel to enter the first circulating ink box 116 through the first ink channel connected in sequence, and finally collects the residual ink in the first circulating ink box 116.
[0065] In this embodiment, by setting the first nitrogen source 131 and the first nitrogen gas channel connecting the first nitrogen source 131 and the first ink channel, nitrogen gas is introduced to recover the ink and blow the channel, remove residual liquid, and avoid damage to the first ink channel or each component caused by long-term adhesion of the ink.
[0066] Example Five
[0067] In some embodiments, it further includes a second nitrogen source 141 and a second nitrogen gas channel 143 connected to the second nitrogen source 141. The second nitrogen gas channel 143 is connected to the position close to the second ink bottle 112 through the second switch valve 128 and the second ink channel 129. The second nitrogen gas channel 143 is also provided with a second pressure reducing valve 142.
[0068] The second nitrogen source 141 is usually a high-pressure nitrogen bottle or a nitrogen generator, which is used to provide stable high-pressure nitrogen gas for blowing and cleaning the channel 152 and recovering the solution. The second nitrogen gas channel 143 is used to deliver nitrogen gas from the second nitrogen source 141 to the required positions.
[0069] The second switch valve 128 is a switch valve for controlling the nitrogen gas into the second ink channel 129. When the nitrogen gas channel and the second ink channel 129 are connected, the passage between the second ink bottle 112 and the second ink channel 129 is closed, and when the passage between the nitrogen gas channel and the second ink channel 129 is closed, the second ink bottle 112 and the second ink channel 129 are connected. Specifically, it can be an electromagnetic valve or a starting valve, or other valves, which are not limited here.
[0070] The second pressure reducing valve 142 can adjust the output pressure as needed, which is used to reduce the high pressure nitrogen gas to a suitable pressure for system use, to ensure the stability and safety of the nitrogen gas in the second nitrogen gas channel 143 and the second ink channel.
[0071] It can be understood that when the second nitrogen gas channel 143 and the second ink channel are connected, at this time, the second nozzle 125, the second ink supply pump 122 and the second circulating ink pump are all stopped working. The nitrogen gas provided by the second nitrogen source 141 enters the second ink channel 129 through the second nitrogen gas channel 143 and the second pressure reducing valve 142, and starts to blow from the position close to the second ink bottle 112. After the nitrogen gas enters the second ink channel 129, it pushes the remaining solution in the channel to enter the second circulating ink box 126 through the second ink channel connected in sequence, and finally collects the residual ink in the second circulating ink box 126.
[0072] In this embodiment, by setting the second nitrogen source 141 and the second nitrogen gas channel connecting the second nitrogen source 141 and the second ink channel, the nitrogen gas is introduced to recover the ink in the second ink channel and to blow the channel, to remove the residual liquid and avoid the damage of the long-time adhesion of the ink to the second ink channel or the components.
[0073] Example Six
[0074] In some embodiments, it further includes a cleaning solvent bottle 151 and a cleaning channel 152, and the cleaning channel 152 is in communication with the first switch valve 118.
[0075] The cleaning solvent bottle 151 is used to store cleaning solvent, and the cleaning agent is used to clean the channel 152 and the components. The cleaning channel 152 connects the cleaning solvent bottle 151 and the first switch valve 118, and is used to transport the cleaning solvent to the parts to be cleaned.
[0076] The first switch valve 118 has three connection states. In the first connection state, the first ink bottle 111 and the first ink path pipeline are connected, the first nitrogen pipeline 133 and the first ink path pipeline are not connected, and the cleaning pipeline 152 and the first ink path pipeline are not connected. In the second connection state, the first nitrogen pipeline 133 and the first ink path pipeline are connected, the first ink bottle 111 and the first ink path pipeline are not connected, and the cleaning pipeline 152 and the first ink path pipeline are not connected. In the third connection state, the cleaning pipeline 152 and the first ink path pipeline are connected, the first nitrogen pipeline 133 and the first ink path pipeline are not connected, and the first ink bottle 111 and the first ink path pipeline are not connected.
[0077] When the cleaning pipeline 152 and the first ink path pipeline are connected, the first ink path is in a cleaning state, the first nozzle 115, the first ink supply pump 112 and the first circulating ink pump are all opened, the first ink supply pump 112 is used to pump the cleaning agent into the first ink path pipeline, the cleaning agent flows through the first ink path pipeline and each element to clean the entire first ink path. The cleaning agent is sprayed from the first nozzle 115 to clean the nozzle and avoid clogging of the nozzle hole.
[0078] In some embodiments, the first switch valve 118 is an electromagnetic valve. The electromagnetic valve can complete the opening and closing action in a very short time, and the response time is usually between a few milliseconds to a few seconds to achieve fast response.
[0079] Example Seven
[0080] In some embodiments, a cleaning solvent bottle 151 and a cleaning pipeline 152 are further included, and the cleaning pipeline 152 is connected with the first switch valve 118 and the second switch valve 128 respectively.
[0081] The second switch valve 128 has three connection states. In the second connection state, the second ink bottle 112 and the second ink path pipeline are connected, the second nitrogen pipeline 143 and the second ink path pipeline are not connected, and the cleaning pipeline 152 and the second ink path pipeline are not connected. In the second connection state, the second nitrogen pipeline 143 and the second ink path pipeline are connected, the second ink bottle 112 and the second ink path pipeline are not connected, and the cleaning pipeline 152 and the second ink path pipeline are not connected. In the third connection state, the cleaning pipeline 152 and the second ink path pipeline are connected, the second nitrogen pipeline 143 and the second ink path pipeline are not connected, and the second ink bottle 112 and the second ink path pipeline are not connected.
[0082] When the cleaning pipeline 152 and the second ink path pipeline are connected, the second ink path is in a cleaning state, the second nozzle 125, the second ink supply pump 122 and the second circulating ink pump are all opened, the second ink supply pump 122 is used to pump the cleaning agent into the second ink path pipeline, the cleaning agent flows through the second ink path pipeline and each element to clean the entire second ink path. The cleaning agent is sprayed from the second nozzle 125 to clean the nozzle and avoid clogging of the nozzle hole.
[0083] The first ink path and the second ink path share one cleaning bottle, and the cleaning agent is used to clean the ink path, so that no bad influence is caused even if the first ink path and the second ink path interfere with each other. Sharing one cleaning bottle is beneficial to reduce the production cost of the equipment, and sharing the cleaning agent bottle can reduce the number and connection points of the cleaning pipes 152, so that the system structure is simpler.
[0084] In some embodiments, the first switch valve 118 and the second switch valve 128 are both solenoid valves. The solenoid valve can complete the opening and closing action in a very short time, and the response time is usually between a few milliseconds to a few seconds, so as to realize fast response.
[0085] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A perovskite inkjet device, characterized by, The first ink path and the second ink path are provided. The first ink path comprises a first ink bottle, a first ink supply pump, a first buffer box, a first secondary ink box and a first inkjet head connected in sequence through a first ink channel. The second ink path comprises a second ink bottle, a second ink supply pump, a second buffer box, a second secondary ink box and a second inkjet head connected in sequence through a second ink channel.
2. The perovskite inkjet apparatus according to claim 1, wherein The first ink path further comprises a first circulating ink box and a first circulating pump in communication with each other, wherein the first circulating pump is in communication with the first secondary ink box, and the first circulating ink box is in communication with the first inkjet head.
3. The perovskite inkjet apparatus according to claim 2, wherein Liquid level sensors are arranged on the first circulating ink box and the first secondary ink box respectively, and the liquid level sensors are in signal connection with the first circulating pump.
4. The perovskite inkjet apparatus according to claim 2 or 3, wherein The second ink path further comprises a second circulating ink box and a second circulating pump in communication with each other, wherein the second circulating pump is in communication with the second secondary ink box, and the second circulating ink box is in communication with the second inkjet head.
5. The perovskite inkjet apparatus according to claim 4, wherein Liquid level sensors are arranged on the second circulating ink box and the second secondary ink box respectively, and the liquid level sensors are in signal connection with the second circulating pump.
6. The perovskite inkjet apparatus according to claim 4, wherein A first nitrogen source and a first nitrogen channel connected with the first nitrogen source are further provided, the first nitrogen channel is in communication with the first ink channel near the first ink bottle through a first switch valve, and a first pressure reducing valve is further arranged on the first nitrogen channel.
7. The perovskite inkjet apparatus according to claim 6, wherein A second nitrogen source and a second nitrogen channel connected with the second nitrogen source are further provided, the second nitrogen channel is in communication with the second ink channel near the second ink bottle through a second switch valve, and a second pressure reducing valve is further arranged on the second nitrogen channel.
8. The perovskite inkjet apparatus according to claim 6, wherein A cleaning solvent bottle and a cleaning channel are further provided, and the cleaning channel is in communication with the first switch valve.
9. The perovskite inkjet apparatus according to claim 7, wherein A cleaning solvent bottle and a cleaning channel are further provided, and the cleaning channel is in communication with the first switch valve and the second switch valve respectively.
10. The perovskite inkjet apparatus of claim 6, wherein The first switch valve is an electromagnetic valve.
11. The perovskite inkjet apparatus of claim 7, wherein The first switch valve and the second switch valve are both electromagnetic valves.