Self-circulation liquid path device for perovskite solution coating process

Abstract

The utility model provides a self-circulation liquid path device aiming at a perovskite solution coating process, which comprises double Y shafts, rails of the double Y shafts are connected to the lower part of a gantry in a sliding manner, the upper part of the gantry is fixedly connected to the upper part of a spray head, a conveying pipe fitting is arranged at the rear part of the spray head, and a drainage pipe fitting is arranged at the end part of the conveying pipe fitting. A negative pressure device is arranged at one end of the drainage pipe fitting, a positive pressure device is arranged at the other end of the drainage pipe fitting, gas in a solution is extracted through negative pressure, and the situation that liquid remaining in spraying of the spraying head drips and leaks due to the gravity effect, a sample is polluted, and film coating of the sample fails is avoided; and the negative pressure device can extract gas from the solution supplied into the spray head, the solution containing bubbles is subjected to vacuum treatment, and the bubbles can be promoted to expand and escape from the surface of the solution by reducing the pressure, so that the bubbles are eliminated.

Description

Technical Field

[0001] The utility model relates to a self-circulating liquid path device for a perovskite solution coating process, belonging to the technical field of air pressure liquid supply equipment. Background Art

[0002] Perovskite new energy battery is a new type of thin-film battery. Its main core process is to use equipment with specific functions to evenly cover the perovskite solution on the glass. The more uniform the solution on the sample, the higher its efficiency. Compared with the crystalline silicon solar cells currently on the market, perovskite energy batteries are lower in cost and more convenient.

[0003] At present, the injection equipment on the equipment still uses a syringe to directly inject the solution into the cutter head. However, bubbles may be generated in the hose during the liquid collection process, causing small particles to protrude from the sample during the coating process, affecting the completion of the sample. In addition, the solution retained in the cutter head will drip onto the surface of the processed object due to the influence of gravity, causing contamination. Utility Model Content

[0004] Based on the above background, the purpose of the present invention is to provide a self-circulating liquid path device for a perovskite solution coating process to solve the problems described in the background technology.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0006] A self-circulating liquid circuit device for a perovskite solution coating process, comprising a double Y-axis, the track of the double Y-axis is slidably connected to the lower part of a gantry, the upper part of the gantry is fixedly connected to the upper part of a nozzle, a conveying pipe is arranged at the rear of the nozzle, a drainage pipe is arranged at the end of the conveying pipe, a negative pressure device is arranged at one end of the drainage pipe, and a positive pressure device is arranged at the other end of the drainage pipe;

[0007] Preferably, the positive pressure device comprises: a positive pressure air pump, a pressure reducing valve, a two-position three-way solenoid valve three, a waste liquid bottle, a solution bottle, and a filter, wherein the inlet end of the filter is fixedly connected to the end of the drainage pipe, the outlet end of the filter is fixedly connected to the inlet end of the positive pressure air pump, the outlet end of the positive pressure air pump is fixedly connected to the inlet end of the pressure reducing valve, the outlet end of the pressure reducing valve is fixedly connected to the inlet end of the two-position three-way solenoid valve three, the outlet end of the two-position three-way solenoid valve three is fixedly connected to the inlet end of the waste liquid bottle, and the outlet end of the waste liquid bottle is fixedly connected to the inlet end of the solution bottle;

[0008] Preferably, the negative pressure device comprises: a throttle valve, a two-position two-way solenoid valve 1, a control switch, a negative pressure gas cylinder, a two-position two-way solenoid valve 2, and a negative pressure air pump, wherein the inlet end of the throttle valve is fixedly connected to the end of the drainage pipe fitting, the outlet end of the throttle valve is fixedly connected to the inlet end of the two-position two-way solenoid valve 1, the outlet end of the two-position two-way solenoid valve 1 is fixedly connected to the inlet end of the control switch, the outlet end of the control switch is fixedly connected to the inlet end of the negative pressure gas cylinder, the outlet end of the negative pressure gas cylinder is fixedly connected to the inlet end of the two-position two-way solenoid valve 2, the outlet end of the two-position two-way solenoid valve 2 is fixedly connected to the inlet end of the negative pressure air pump, and the outlet end of the negative pressure air pump is fixedly connected to the inlet end of the negative pressure gas cylinder;

[0009] Preferably, the drainage pipe comprises: a diverter and a liquid guide tube, one end of the drainage pipe is fixedly connected to the end of the negative pressure device, the other end of the drainage pipe is fixedly connected to one end of the diverter, the other end of the diverter is fixedly connected to the end of the positive pressure device, and the middle part of the diverter is fixedly connected to the end of the delivery pipe;

[0010] Preferably, the conveying pipe comprises: a fixed frame, a rotating shaft, a double-head frame, the inner wall of the conveying pipe is fixedly connected to one end of the fixed frame, the other end of the fixed frame is fixedly connected to the middle of the rotating shaft, and the middle of the rotating shaft is fixedly connected to the middle of the double-head frame;

[0011] Preferably, the double-head frame further comprises: a crushing piece and a fixing plate, the end of the double-head frame is fixedly connected to the middle of the fixing plate, and the end surface of the fixing plate is fixedly connected with a plurality of crushing pieces.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. Extract the gas in the solution through negative pressure to avoid the liquid retained in the nozzle spraying from dripping and leaking due to gravity, which will contaminate the sample and cause the sample coating failure. When the solution supplied to the nozzle needs to eliminate bubbles, the negative pressure device can extract gas from the solution supplied to the nozzle to avoid bubbles in the solution flowing in the nozzle, which will cause small particles to protrude from the sample during the coating process, affecting the completion of the sample. The solution containing bubbles is vacuum treated to reduce the pressure, which can cause the bubbles to expand and escape from the surface of the solution, thereby eliminating the bubbles.

[0014] 2. The positive pressure device applies pressure to clean the liquid supply pipeline, avoiding the tedious steps of injecting liquid for cleaning. When the solution flows into the delivery pipe, the solution pushes the fixed plate during the flow, so that the fixed plate drives the rotating shaft to rotate. During the rotation of the rotating shaft, the solution is stirred, and the crushing piece can enhance the turbulent effect of stirring. Using a double-head frame to stir the solution for a period of time helps to gradually release and eliminate bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the rear three-dimensional structure of the utility model;

[0017] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of part A;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the negative pressure device;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the positive pressure device;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the conveying pipe.

[0021] In the figure: 1. Double Y-axis; 2. Gantry; 3. Positive pressure device; 31. Positive pressure air pump; 32. Pressure reducing valve; 33. Two-position three-way solenoid valve three; 34. Waste liquid bottle; 35. Solution bottle; 36. Filter; 4. Negative pressure device; 41. Throttle valve; 42. Two-position two-way solenoid valve one; 43. Control switch; 44. Negative pressure gas cylinder; 45. Two-position two-way solenoid valve two; 46. Negative pressure air pump; 5. Drainage pipe fittings; 51. Diverter; 52. Liquid guide tube; 6. Delivery pipe fittings; 61. Fixed frame; 62. Rotating shaft; 63. Double-head frame; 631. Crushing piece; 632. Fixed plate; 7. Nozzle. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described in detail below through specific embodiments and in combination with the accompanying drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the protection scope of the utility model.

[0023] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the field. The methods in the following embodiments, unless otherwise specified, are conventional methods in the field. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0024] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0025] like Figure 1-Figure 5 As shown, a self-circulating liquid circuit device for a perovskite solution coating process comprises a double Y-axis 1, the track of the double Y-axis 1 is slidably connected to the lower part of a gantry 2, the upper part of the gantry 2 is fixedly connected to the upper part of a nozzle 7, a conveying pipe 6 is arranged at the rear of the nozzle 7, a drainage pipe 5 is arranged at the end of the conveying pipe 6, a negative pressure device 4 is arranged at one end of the drainage pipe 5, and a positive pressure device 3 is arranged at the other end of the drainage pipe 5;

[0026] The positive pressure device 3 comprises: a positive pressure air pump 31, a pressure reducing valve 32, a two-position three-way solenoid valve 33, a waste liquid bottle 34, a solution bottle 35, and a filter 36, wherein the inlet end of the filter 36 is fixedly connected to the end of the drainage pipe 5, the outlet end of the filter 36 is fixedly connected to the inlet end of the positive pressure air pump 31, the outlet end of the positive pressure air pump 31 is fixedly connected to the inlet end of the pressure reducing valve 32, the outlet end of the pressure reducing valve 32 is fixedly connected to the inlet end of the two-position three-way solenoid valve 33, the outlet end of the two-position three-way solenoid valve 33 is fixedly connected to the inlet end of the waste liquid bottle 34, and the outlet end of the waste liquid bottle 34 is fixedly connected to the inlet end of the solution bottle 35;

[0027] The negative pressure device 4 comprises: a throttle valve 41, a two-position two-way solenoid valve 1 42, a control switch 43, a negative pressure gas cylinder 44, a two-position two-way solenoid valve 2 45, and a negative pressure air pump 46. The inlet end of the throttle valve 41 is fixedly connected to the end of the drainage pipe 5, the outlet end of the throttle valve 41 is fixedly connected to the inlet end of the two-position two-way solenoid valve 1 42, the outlet end of the two-position two-way solenoid valve 1 42 is fixedly connected to the inlet end of the control switch 43, the outlet end of the control switch 43 is fixedly connected to the inlet end of the negative pressure gas cylinder 44, the outlet end of the negative pressure gas cylinder 44 is fixedly connected to the inlet end of the two-position two-way solenoid valve 2 45, the outlet end of the two-position two-way solenoid valve 2 45 is fixedly connected to the inlet end of the negative pressure air pump 46, and the outlet end of the negative pressure air pump 46 is fixedly connected to the inlet end of the negative pressure gas cylinder 44;

[0028] The drainage pipe 5 includes: a diverter 51 and a liquid guide tube 52. One end of the drainage pipe 5 is fixedly connected to the end of the negative pressure device 4, the other end of the drainage pipe 5 is fixedly connected to one end of the diverter 51, the other end of the diverter 51 is fixedly connected to the end of the positive pressure device 3, and the middle part of the diverter 51 is fixedly connected to the end of the conveying pipe 6.

[0029] The conveying pipe 6 comprises: a fixed frame 61, a rotating shaft 62, a double-head frame 63, the inner wall of the conveying pipe 6 is fixedly connected to one end of the fixed frame 61, the other end of the fixed frame 61 is fixedly connected to the middle of the rotating shaft 62, and the middle of the rotating shaft 62 is fixedly connected to the middle of the double-head frame 63;

[0030] The double-head frame 63 further includes: a crushing piece 631 and a fixing plate 632 . The end of the double-head frame 63 is fixedly connected to the middle of the fixing plate 632 , and the end surface of the fixing plate 632 is fixedly connected with a plurality of crushing pieces 631 .

[0031] The working principle of the self-circulating liquid circuit device for the coating process of perovskite solution of the utility model is as follows: when the nozzle 7 is performing liquid supply spraying, the negative pressure device 4 needs to be started. After the negative pressure device 4 is started, the air in the solution is filtered by the filter and then enters the throttle valve 41. The throttle valve 41 can adjust the amount of gas entering. The gas entering will pass through a two-position two-way solenoid valve 42. A control switch 43 connected to the outlet end of the two-position two-way solenoid valve 42 can control the entry of air into the two-position two-way solenoid valve 42. After the air passes through the control switch 43, it flows to the negative pressure gas cylinder 44. The negative pressure gas cylinder 44 can be used as a buffer. The function of the negative pressure gas cylinder 44 is mainly to play a negative pressure role, which can suck the external gas into the throttle valve 41, and the two-position two-way solenoid valve 42 is connected to the outlet end of the two-position two-way solenoid valve 42. The function of valve 2 45 is that the two-position two-way solenoid valve 2 45 can control the action of the negative pressure air pump 46 to draw in, which is actually a switch to control the entry into the negative pressure air pump 46. By opening the two-position two-way solenoid valve 2 45, the gas passing through the negative pressure air pump 46 can flow into the negative pressure gas cylinder 44, and the gas in the solution can be extracted by negative pressure to avoid the liquid retained in the spraying of the nozzle 7 from dripping or leaking due to gravity, which will contaminate the sample and cause the sample coating failure. When the solution supplied to the nozzle 7 needs to eliminate bubbles, and the negative pressure device 4 can extract gas from the solution supplied to the nozzle 7, bubbles can be avoided in the solution flowing in the nozzle 7, which will cause small particles to protrude from the sample during the coating process of the cutter head, affecting the completion of the sample, and the bubble-containing solution is vacuum-treated to reduce the pressure It can cause bubbles to expand and escape from the surface of the solution, thereby eliminating bubbles. When it is necessary to clean the liquid supply pipeline flowing to the nozzle 7, it is necessary to start the positive pressure device 3, and the solution air passes through the filter 36 and enters the positive pressure air pump 31. The positive pressure air pump 31 can be used to relieve pressure when the negative pressure is too high. When the gas flows to the pressure reducing valve 32 through the positive pressure air pump 31, the pressure reducing valve 32 can control the flow rate of the negative pressure gas to avoid excessive flow rate of the negative pressure gas. The gas enters the two-position three-way solenoid valve 33 through the pressure reducing valve 32. The two-position three-way solenoid valve 33 can be used as a switch for positive pressure airflow. At the same time, the two-position three-way solenoid valve 33 can control the switching of positive and negative air pressures. At this time, the inflowing solution will pass through the two-position three-way solenoid valve 33 and enter the waste liquid bottle 34 for storage. The waste liquid bottle 34 can prevent the solution retained in the waste liquid bottle 34 from flowing back and contaminating the filter 36 and the two-position three-way solenoid valve 33. Then the positive and negative pressure gases retained in the waste liquid bottle 34 eventually enter the solution bottle 35, thereby realizing timely cleaning of the equipment by the positive pressure device 3. The positive pressure device 3 pressurizes the liquid supply pipeline to clean it, avoiding the tedious steps of injecting liquid for cleaning. In the process of the solution flowing into the conveying pipe 6, the solution pushes the fixed plate 632 during the flow, so that the fixed plate 632 drives the rotating shaft 62 to rotate. In the process of the rotating shaft 62 rotating, the solution is stirred, and the crushing piece 631 can enhance the turbulent effect of stirring. Using the double-head frame 63 to stir the solution for a period of time helps to gradually release and eliminate the bubbles.

[0032] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A self-circulating liquid path device for a perovskite solution coating process, comprising a double Y-axis (1), wherein the track of the double Y-axis (1) is slidably connected to the lower part of a gantry (2), and the upper part of the gantry (2) is fixedly connected to the upper part of a nozzle (7), Features: A delivery pipe (6) is provided at the rear of the nozzle (7), a drainage pipe (5) is provided at the end of the delivery pipe (6), a negative pressure device (4) is provided at one end of the drainage pipe (5), and a positive pressure device (3) is provided at the other end of the drainage pipe (5).

2. A self-circulating liquid path device for a perovskite solution coating process according to claim 1, Features: The positive pressure device (3) comprises: a positive pressure air pump (31), a pressure reducing valve (32), a two-position three-way solenoid valve (33), a waste liquid bottle (34), a solution bottle (35), and a filter (36); the inlet end of the filter (36) is fixedly connected to the end of the drainage pipe (5); the outlet end of the filter (36) is fixedly connected to the inlet end of the positive pressure air pump (31); the outlet end of the positive pressure air pump (31) is fixedly connected to the inlet end of the pressure reducing valve (32); the outlet end of the pressure reducing valve (32) is fixedly connected to the inlet end of the two-position three-way solenoid valve (33); the outlet end of the two-position three-way solenoid valve (33) is fixedly connected to the inlet end of the waste liquid bottle (34); and the outlet end of the waste liquid bottle (34) is fixedly connected to the inlet end of the solution bottle (35).

3. A self-circulating liquid path device for a perovskite solution coating process according to claim 1, Features: The negative pressure device (4) comprises: a throttle valve (41), a two-position two-way solenoid valve (42), a control switch (43), a negative pressure gas cylinder (44), a two-position two-way solenoid valve (45), and a negative pressure gas pump (46); the inlet end of the throttle valve (41) is fixedly connected to the end of the drainage pipe (5); the outlet end of the throttle valve (41) is fixedly connected to the inlet end of the two-position two-way solenoid valve (42); the outlet end of the two-position two-way solenoid valve (42) is fixedly connected to the inlet end of the two-position two-way solenoid valve (42); The end is fixedly connected to the inlet end of the control switch (43), the outlet end of the control switch (43) is fixedly connected to the inlet end of the negative pressure gas cylinder (44), the outlet end of the negative pressure gas cylinder (44) is fixedly connected to the inlet end of the two-position two-way solenoid valve (45), the outlet end of the two-position two-way solenoid valve (45) is fixedly connected to the inlet end of the negative pressure air pump (46), and the outlet end of the negative pressure air pump (46) is fixedly connected to the inlet end of the negative pressure gas cylinder (44).

4. A self-circulating liquid path device for a perovskite solution coating process according to claim 1, Features: The drainage pipe (5) comprises: a diverter (51) and a liquid guide tube (52); one end of the drainage pipe (5) is fixedly connected to the end of the negative pressure device (4); the other end of the drainage pipe (5) is fixedly connected to one end of the diverter (51); the other end of the diverter (51) is fixedly connected to the end of the positive pressure device (3); and the middle part of the diverter (51) is fixedly connected to the end of the conveying pipe (6).

5. A self-circulating liquid path device for a perovskite solution coating process according to claim 1, Features: The conveying pipe (6) comprises: a fixed frame (61), a rotating shaft (62), and a double-head frame (63); the inner wall of the conveying pipe (6) is fixedly connected to one end of the fixed frame (61); the other end of the fixed frame (61) is fixedly connected to the middle of the rotating shaft (62); and the middle of the rotating shaft (62) is fixedly connected to the middle of the double-head frame (63).

6. A self-circulating liquid path device for a perovskite solution coating process according to claim 5, Features: The double-head frame (63) further comprises: a crushing piece (631) and a fixing plate (632); the end of the double-head frame (63) is fixedly connected to the middle of the fixing plate (632); and the end surface of the fixing plate (632) is fixedly connected to a plurality of crushing pieces (631).

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