Solar cell wet-process groove type machine

Abstract

The utility model provides a solar cell wet-process trough type machine, which comprises a reaction tank, a slow-lifting main trough, an overflow pipeline, a slow-lifting auxiliary trough, a backflow pipeline and a trough cover cleaning assembly, the overflow pipeline is arranged between the slow-lifting main trough and the slow-lifting auxiliary trough, the slow-lifting auxiliary trough receives liquid overflowing from the slow-lifting main trough through the overflow pipeline, and the backflow pipeline is connected with the trough cover cleaning assembly. The backflow pipeline is arranged between the slow lifting auxiliary tank and the slow lifting main tank, a circulating pump is arranged on the backflow pipeline, the inlet end of the circulating pump is connected with the slow lifting auxiliary tank, the outlet end of the circulating pump is connected with the slow lifting main tank, and the tank cover cleaning assembly comprises a cleaning pipeline, a spraying head and a cleaning valve. One end of the cleaning pipeline is connected with the backflow pipeline, the other end of the cleaning pipeline is connected with the spraying head, the cleaning valve is arranged on the cleaning pipeline, a tank cover is arranged on the reaction tank, and the spraying head is used for spraying the tank cover. Due to the arrangement, crystals on the tank cover can be timely and effectively cleaned under the condition that the original productivity is maintained.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic cells, in particular to a wet process trough machine for solar cells. Background Art

[0002] N-type high-efficiency cells are currently gaining popularity in the photovoltaic cell market, with TOPCON technology becoming the dominant technology in this field. Throughout the entire process, wet-process trough machines are widely used. Over extended use, chemical splashes and drips within the machine can easily cause crystals to accumulate on the trough machine covers, particularly on the chemical tank covers. This long-term accumulation of crystals can lead to equipment aging, trough cover damage, and frequent machine failures, ultimately impacting machine output.

[0003] Currently, there are two main methods for cleaning the slot covers of trough-type machines. The first is to use a water gun during fluid change intervals. While this method can effectively remove crystals from the machine, it is difficult to operate on the production line. Cold water flushing is ineffective, and hot water flushing poses a risk of burns. Furthermore, flushing requires machine downtime, increasing fluid change time and impacting production capacity. The second method is to use maintenance intervals for cleaning. This method has long cleaning intervals, is ineffective in removing crystals, and thorough cleaning increases maintenance time and workload. Therefore, neither method provides efficient cleaning results.

[0004] Therefore, it is necessary to design a solar cell wet process trough machine to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a solar cell wet process tank machine which can effectively clean the crystals of the tank cover without affecting the production capacity.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a solar cell wet process tank machine, which includes a reaction tank, a slow pulling main tank, an overflow pipe, a slow pulling auxiliary tank, a return pipe and a tank cover cleaning assembly, the overflow pipe is arranged between the slow pulling main tank and the slow pulling auxiliary tank, the slow pulling auxiliary tank receives the liquid overflowing from the slow pulling main tank through the overflow pipe, the return pipe is arranged between the slow pulling auxiliary tank and the slow pulling main tank, a circulating pump is provided on the return pipe, the inlet end of the circulating pump is connected to the slow pulling auxiliary tank, and the outlet end of the circulating pump is connected to the slow pulling main tank, the tank cover cleaning assembly includes a cleaning pipe, a spray head and a cleaning valve, one end of the cleaning pipe is connected to the return pipe, and the other end is connected to the spray head, the cleaning valve is arranged on the cleaning pipe, a tank cover is provided on the reaction tank, and the spray head is used to spray the tank cover.

[0007] As a further improved technical solution of the present invention, the cleaning valve is a solenoid valve or a pneumatic valve.

[0008] As a further improved technical solution of the present invention, the spray head includes a water diversion part and at least two spray parts connected to the water diversion part, and the water diversion part is used to divert the liquid in the cleaning pipe to the spray parts.

[0009] As a further improved technical solution of the present invention, the spray portion is provided with a plurality of spray ports, and the spray ports are arranged in a row along the width direction of the tank cover.

[0010] As a further improved technical solution of the present invention, the tank cover includes two half tank covers, and the spray part corresponds to the half tank covers one by one.

[0011] As a further improved technical solution of the present invention, a pulling mechanism and a heating mechanism are provided in the slow pulling main tank. The pulling mechanism is used to slowly lift the silicon wafer from the cleaning liquid, and the heating mechanism is used to heat the cleaning liquid in the slow pulling main tank.

[0012] As a further improved technical solution of the present invention, the cleaning valve is signal-connected to the switch mechanism of the tank cover, and when the tank cover is in an open state, the cleaning valve is opened.

[0013] From the above technical solutions, it can be seen that the solar cell wet process tank machine of the present invention has the following technical effects:

[0014] 1. By setting up a tank cover cleaning assembly and connecting the tank cover cleaning assembly with the slow-pulling auxiliary tank, the overflow cleaning liquid collected therein can be used to clean the tank cover, which not only improves the convenience of the cleaning operation, but also reduces manual intervention and improves operational safety. The introduction of the tank cover cleaning assembly enables the tank cover of the reaction tank to be effectively cleaned, keeps the equipment clean, and prevents the accumulation of pollutants.

[0015] 2. The use of cleaning valves provides precise control of the cleaning fluid, and the cleaning process can be opened or closed as needed.

[0016] 3. By setting up overflow pipes and return pipes, the liquid forms a two-way flow between the slow pull main tank and the slow pull auxiliary tank, realizing liquid circulation and improving the utilization rate of the cleaning liquid and the cleaning efficiency.

[0017] 4. The design of the spray head includes a water distribution part and multiple spray parts, so that the cleaning liquid can be evenly distributed on the tank cover, improving the uniformity and thoroughness of cleaning; the multiple spray ports on the spray part are arranged along the width direction of the tank cover, ensuring that the cleaning liquid can cover the entire surface of the tank cover and avoiding cleaning dead corners.

[0018] 5. By optimizing the liquid circulation and cleaning process, the consumption of cleaning fluid and cleaning time are reduced, which helps to reduce the operating cost of the equipment. In addition, by recycling the cleaning fluid, the discharge of chemical waste is reduced, which meets environmental protection requirements and has little impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a solar cell wet process tank machine according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Please refer to Figure 1 As shown, the utility model provides a solar cell wet process tank machine, which includes a reaction tank 1, a slow pulling main tank 2, an overflow pipe 11, a slow pulling auxiliary tank 3, a return pipe 12 and a tank cover cleaning assembly 4.

[0022] The reaction tank 1 is used to form a velvet structure on the surface of the silicon wafer through a wet texturing process. The reaction tank 1 is provided with a tank cover 10, and the tank cover 10 includes two half tank covers for easy opening and closing. The slow-pulling main tank 2 is provided at the rear end of the reaction tank 1, and is used to slowly pull and clean the silicon wafer that has been texturized by the reaction tank 1. A pulling mechanism and a heating mechanism are provided in the slow-pulling main tank 2. The pulling mechanism is used to slowly lift the silicon wafer from the cleaning liquid, and the heating mechanism is used to heat the cleaning liquid in the slow-pulling main tank. Through the cooperation of the pulling mechanism and the heating mechanism, an efficient, gentle and uniform cleaning effect is achieved, which helps to improve the quality of the silicon wafer and the performance of the battery. A liquid level sensor is also provided in the slow-pulling sub-tank 3 to monitor the liquid level in the slow-pulling sub-tank 3.

[0023] An overflow pipe 11 is provided between the slow-pulling main tank 2 and the slow-pulling auxiliary tank 3. The slow-pulling auxiliary tank 3 receives the liquid overflowing from the slow-pulling main tank 2 through the overflow pipe 11. A return pipe 12 is provided between the slow-pulling auxiliary tank 3 and the slow-pulling main tank 2. A circulation pump 5 is provided on the return pipe 12. The inlet end of the circulation pump 5 is connected to the slow-pulling auxiliary tank 3, and the outlet end of the circulation pump 5 is connected to the slow-pulling main tank 2. The water in the slow-pulling auxiliary tank 3 is pumped back into the slow-pulling main tank 2 for recycling through the circulation pump 5.

[0024] The tank cover cleaning assembly 4 includes a cleaning pipe 13, a spray head 4, and a cleaning valve 6. One end of the cleaning pipe 13 is connected to the return pipe 12, and the other end is connected to the spray head 4, which is used to divert the overflow liquid to the spray head 4. The cleaning valve 6 is installed on the cleaning pipe 13 and is a solenoid valve or a pneumatic valve.

[0025] The spray head 4 is used to spray the tank cover 10. It includes a water diversion portion 43 and at least two spraying portions 41 and 42 connected to the water diversion portion 43. The water diversion portion 43 is used to divert the liquid in the cleaning pipe 13 to the spraying portions 41 and 42. The spraying portions 41 and 42 are provided with multiple spray ports, which are arranged in a row along the width of the tank cover 10. The spraying portions 41 and 42 correspond one to each half of the tank cover. The cleaning valve 6 is connected to the switch mechanism signal of the tank cover 10. When the tank cover 10 is open, the cleaning valve 6 opens, and the spray head begins to spray water to clean the tank cover 10.

[0026] During operation, the water in the slow-lift main tank 2 overflows into the slow-lift auxiliary tank 3. Further, the water in the slow-lift auxiliary tank 3 is transported out through the circulation pump 5. Part of the water is pumped into the slow-lift main tank 2 for reuse, and the other part of the water is pumped onto the tank cover 4 in a timed and quantitative manner controlled by the cleaning valve 6 to clean the tank cover 4 to prevent the accumulation of chemical crystals on the tank cover.

[0027] The terms used herein to indicate spatial relative positions are used for ease of explanation to describe the relationship of one feature relative to another feature as shown in the accompanying drawings. It should be understood that, depending on the placement of the product, these terms may be intended to encompass different orientations besides those shown in the drawings and should not be construed as limitations on the claims.

[0028] In addition, the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in this field should understand that technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the scope of the claims of the present invention.

Claims

1. A solar cell wet process tank machine, characterized by: It includes a reaction tank, a slow-pulling main tank, an overflow pipe, a slow-pulling sub-tank, a reflux pipe and a tank cover cleaning assembly, the overflow pipe is arranged between the slow-pulling main tank and the slow-pulling sub-tank, the slow-pulling sub-tank receives the liquid overflowing from the slow-pulling main tank through the overflow pipe, the reflux pipe is arranged between the slow-pulling sub-tank and the slow-pulling main tank, a circulation pump is provided on the reflux pipe, the inlet end of the circulation pump is connected to the slow-pulling sub-tank, and the outlet end of the circulation pump is connected to the slow-pulling main tank, the tank cover cleaning assembly includes a cleaning pipe, a spray head and a cleaning valve, one end of the cleaning pipe is connected to the reflux pipe, and the other end is connected to the spray head, the cleaning valve is arranged on the cleaning pipe, a tank cover is provided on the reaction tank, and the spray head is used to spray the tank cover.

2. The solar cell wet process tank machine according to claim 1, characterized in that: The cleaning valve is a solenoid valve or a pneumatic valve.

3. The solar cell wet process tank machine according to claim 1, wherein: The spray head includes a water diversion part and at least two spray parts connected to the water diversion part. The water diversion part is used to divert the liquid in the cleaning pipeline to the spray parts.

4. The solar cell wet process tank machine according to claim 3, characterized in that: The spray portion is provided with a plurality of spray ports, and the spray ports are arranged in a row along the width direction of the tank cover.

5. The solar cell wet process tank machine according to claim 3, characterized in that: The tank cover includes two half tank covers, and the spray parts correspond to the half tank covers one by one.

6. The solar cell wet process tank machine according to claim 1, characterized in that: The slow pulling main tank is provided with a pulling mechanism and a heating mechanism. The pulling mechanism is used to slowly lift the silicon wafer from the cleaning liquid, and the heating mechanism is used to heat the cleaning liquid in the slow pulling main tank.

7. The solar cell wet process tank machine according to claim 1, wherein: The cleaning valve is connected to the switch mechanism signal of the tank cover, and when the tank cover is in the open state, the cleaning valve is opened.

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