Photovoltaic wet tank body alkali crystallization cleaning device and processing equipment

Abstract

The utility model relates to the field of alkali crystallization cleaning, disclose photovoltaic wet method tank body alkali crystallization cleaning device and processing equipment, photovoltaic wet method tank body alkali crystallization cleaning device includes tank body, and tank body is provided with containing cavity, and containing cavity is used for containing liquid medium, and the opening portion is formed on the tank body, tank cover, tank cover is covered in the opening portion, spray pipe, spray pipe sets up in the side of tank cover towards containing cavity, and spray pipe is provided with through -hole, and spray pipe is suitable for at least two directions spray cleaning fluid. The utility model provides photovoltaic wet method tank body alkali crystallization cleaning device through the spray pipe provided with through -hole, can carry out multi -angle washing to the alkali crystallization of tank cover inner surface, has improved the cleaning efficiency, reduced the interference of crystallization accumulation to subsequent process.

Description

Technical Field

[0001] This utility model relates to the field of alkaline crystallization cleaning technology, specifically to an alkaline crystallization cleaning device and processing equipment for photovoltaic wet process tanks. Background Technology

[0002] During long-term production, wet alkaline polishing tanks are prone to alkaline residue on the inner surface of the tank cover due to the alkaline solution carried by the silicon wafer carrier baskets as they enter and exit the tank. This residue evaporates and forms alkaline crystals on the tank cover surface. The presence of these crystals can cause process problems: if the crystals detach with the opening and closing of the tank cover, they can fall directly into the alkaline polishing solution within the tank, potentially altering the solution concentration and causing contamination. This can lead to uneven polishing of the silicon wafers and affect the quality of subsequent processes.

[0003] To address the aforementioned problem of alkali crystallization, conventional treatment methods, such as relying on manual cleaning and removal during monthly maintenance, are not only cumbersome but also have long cleaning intervals. This makes it impossible to remove crystals in a timely manner during daily production, and it is difficult to avoid the impact of crystal shedding on the chemical solution and process. Utility Model Content

[0004] In view of this, the present invention provides a photovoltaic wet process tank alkaline crystallization cleaning device and treatment equipment to solve the problem of difficult cleaning of alkaline crystals on the surface of the tank cover.

[0005] In a first aspect, this utility model provides an alkaline crystallization cleaning device for photovoltaic wet processing tanks, comprising: The tank has a receiving cavity for containing liquid media, and an opening is formed on the tank. A trough cover is provided over the opening; A spray pipe is provided on the side of the tank cover facing the receiving cavity. The spray pipe has through holes and is suitable for spraying cleaning liquid in at least two directions.

[0006] Beneficial effects: By installing a spray pipe on the side of the tank cover facing the receiving cavity, and the spray pipe being able to spray cleaning liquid in at least two directions, the inner surface of the tank cover can be cleaned from multiple angles, covering areas prone to alkali crystal formation and effectively removing alkali crystals; frequent manual cleaning is not required, avoiding the untimely nature of manual cleaning, and also preventing alkali crystals from falling off and contaminating the tank solution during production, thus ensuring the stability of the photovoltaic wet treatment process.

[0007] In one alternative embodiment, multiple spray pipes are provided, and the multiple spray pipes are spaced apart on the tank cover.

[0008] Beneficial effects: Multiple spray pipes spaced apart on the tank cover can further expand the spray coverage of the cleaning solution, ensuring that every corner of the tank cover surface is covered by the cleaning solution. This allows for simultaneous cleaning of different areas, improving cleaning efficiency.

[0009] In one optional embodiment, multiple rows of through holes are spaced apart at the bottom of the spray pipe. Each row of through holes includes multiple through holes spaced apart along the axial direction of the spray pipe, and the multiple rows of through holes are spaced apart around the circumferential direction of the spray pipe.

[0010] Beneficial effects: The multiple rows of through holes spaced apart allow the cleaning solution to be sprayed from different angles and positions, forming a more uniform coverage area, reducing blind spots, and enhancing the rinsing effect on alkali crystals.

[0011] In one optional embodiment, a cleaning fluid auxiliary tank is further included, which has a storage cavity for storing cleaning fluid and is connected to the spray pipe.

[0012] Beneficial effects: The cleaning fluid auxiliary tank is used to provide cleaning fluid to the spray pipes, and the storage chamber can store a sufficient amount of cleaning fluid in advance to ensure the continuity of the cleaning process.

[0013] In one alternative implementation, it further includes: The booster pump has its input end connected to the cleaning fluid auxiliary tank and its output end connected to the spray pipe. The hose is used to connect the cleaning fluid tank, the booster pump and the spray pipe in sequence.

[0014] Beneficial effects: The booster pump can increase the spray pressure of the cleaning fluid, enhance the impact of the cleaning fluid on stubborn alkali crystals, and improve the cleaning effect; the hose has good flexibility, which makes it easy to connect the cleaning fluid auxiliary tank, booster pump and spray pipe, adapt to different installation layouts, and make the assembly and maintenance of the device more convenient.

[0015] In one alternative embodiment, a regulating valve is also included, which is disposed on a hose between the booster pump and the spray pipe, and is used to control the water flow rate.

[0016] Beneficial effects: The regulating valve can adjust the water flow according to the actual situation of alkali crystallization on the surface of the tank cover. When there is less alkali crystallization on the surface of the tank cover, the water flow is reduced to save cleaning solution. When there is more or more stubborn crystallization, the water flow is increased to improve the cleaning intensity and enhance the applicability of the device.

[0017] In one alternative embodiment, the diameter of the through hole is 1mm to 5mm.

[0018] Beneficial effects: Setting the through-hole diameter to 1mm~5mm ensures that the cleaning liquid has sufficient spray force to remove crystals, while avoiding waste of cleaning liquid due to excessively large orifice diameter or blockage of through-hole diameter, thus ensuring stable operation of the spray pipe and reliable cleaning effect.

[0019] In one optional embodiment, four rows of through holes are formed around the circumference of the spray pipe, and the opening directions of the through holes are at angles of 75°, 25°, -25° and -75° with the horizontal plane, respectively.

[0020] Beneficial effects: The opening directions of the through-hole group form angles of 75°, 25°, -25°, and -75° with the horizontal plane, respectively. This specific angle setting allows the cleaning liquid to be sprayed onto the tank wall from multiple different tilt angles, better covering all surfaces of the tank, including corners and crevices that are difficult to clean directly, further improving the comprehensiveness and effectiveness of cleaning. In an optional embodiment, a rotating shaft is also included, which is located at at least one end of the spray pipe along its axial direction. The spray pipe is rotatably connected to the tank cover via the rotating shaft.

[0021] Beneficial effects: The spray pipe is rotatably connected to the tank cover via a rotating shaft. The angle of the spray pipe can be adjusted according to the distribution of alkali crystals on the inner surface of the tank cover, so that the cleaning solution can be sprayed onto the areas where crystals are more concentrated, improving the targeting and effectiveness of cleaning.

[0022] Secondly, this utility model also provides a photovoltaic wet process treatment equipment, including the above-mentioned photovoltaic wet process tank alkaline crystallization cleaning device and control system, the control system being used to realize the automatic discharge and replenishment of alkaline solution in the tank.

[0023] Beneficial effects: Because the photovoltaic wet process equipment includes a photovoltaic wet process tank alkaline crystallization cleaning device, it has the same effect as the photovoltaic wet process tank alkaline crystallization cleaning device; at the same time, the control system realizes the automatic discharge and replenishment of alkaline solution in the tank, reducing manual operation and improving the automation level of equipment operation. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a side view of the spray pipe of this utility model; Figure 2 for Figure 1 Cross-sectional view along the AA direction; Figure 3 This is a top view of the alkaline crystallization cleaning device for photovoltaic wet process tanks.

[0026] Explanation of reference numerals in the attached figures: 1. Tank cover; 2. Spray pipe; 21. Through hole; 3. Cleaning liquid auxiliary tank; 4. Booster pump; 5. Hose; 6. Regulating valve. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] During long-term production, wet alkaline polishing tanks are prone to alkaline residue on the inner surface of the tank cover due to the alkaline solution carried by the silicon wafer carrier baskets as they enter and exit the tank. This residue evaporates and forms alkaline crystals on the tank cover surface. The presence of these crystals causes process problems: firstly, if the crystals detach with the opening and closing of the tank cover, they will fall directly into the alkaline polishing solution within the tank, potentially altering the solution concentration and causing contamination. This results in uneven polishing of the silicon wafers, affecting the quality of subsequent processes.

[0032] To address the aforementioned problem of alkali crystallization, conventional methods, such as relying on manual cleaning and removal during monthly maintenance, are not only cumbersome but also have long cleaning intervals, making it impossible to remove crystals promptly during daily production. This makes it difficult to avoid the impact of crystal detachment on the chemical solution and process. Some related technologies use roller brushes to clean the tank cover, but the metal components of these brushes are exposed to a high-alkali environment for extended periods, making them prone to corrosion and introducing metallic impurities, further affecting the purity of the silicon wafers. Another solution uses hydrochloric acid for chemical neutralization to remove crystals, but this requires interrupting normal production processes and cannot be implemented in daily production, thus failing to achieve timely removal of crystals.

[0033] In summary, existing solutions for treating alkali crystallization on the tank covers of wet alkali polishing tanks either suffer from problems such as untimely cleaning and cumbersome operation, or pose a risk of introducing metal contamination. There is an urgent need to design a highly efficient cleaning solution for alkali crystallization on tank covers that can be implemented in daily production without additional contamination risks, in order to overcome the shortcomings of existing technologies. The following section will combine... Figures 1 to 3 The following describes embodiments of the present invention.

[0034] According to an embodiment of the present invention, an alkaline crystallization cleaning device for photovoltaic wet processing tanks is provided, comprising: The tank has a receiving cavity for containing liquid media, and an opening is formed on the tank. Slot cover 1, slot cover 1 is provided on the opening; Spray pipe 2 is provided on the side of the tank cover 1 facing the receiving cavity. The spray pipe 2 has a through hole 21 and is adapted to spray cleaning liquid in at least two directions.

[0035] The opening edge of the tank body is provided with a sealing structure, such as a groove or flange. A sealing element, such as a rubber gasket, can be installed at the corresponding position on the edge of the tank cover 1. The receiving cavity can be sealed by covering the opening of the tank body with the tank cover 1. The tank body and the tank cover 1 can be fixed with bolts or clips to ensure that the tank cover tightly covers the opening.

[0036] The side of the tank cover 1 facing the receiving cavity can be equipped with connecting parts such as U-shaped clamps and clamps. The spray pipe 2 is installed by inserting it into or passing through these connecting parts. The position of the connecting parts can be determined by the spray range, while ensuring that the axis of the spray pipe 2 remains parallel to the surface of the tank cover 1. For example, multiple spaced U-shaped pipe clamps can be welded to the surface of the tank cover 1. After the spray pipe 2 is placed into the pipe clamps, the opening of the pipe clamps is tightened with bolts, so that the spray pipe 2 is fixed to the tank cover 1. Specifically, the spray pipe 2 can be made of PVDF / PP material.

[0037] By installing a spray pipe 2 on the side of the tank cover 1 facing the receiving cavity, and the spray pipe 2 being able to spray cleaning liquid in at least two directions, the inner surface of the tank cover 1 can be cleaned from multiple angles, covering areas prone to alkali crystal formation and effectively removing alkali crystals; frequent manual cleaning is not required, avoiding the untimely nature of manual cleaning, and also preventing alkali crystals from falling off and contaminating the tank solution during production, thus ensuring the stability of the photovoltaic wet treatment process.

[0038] In some embodiments, multiple spray pipes 2 are provided, and the multiple spray pipes 2 are spaced apart on the tank cover 1.

[0039] Multiple spray pipes 2 are arranged at intervals along the length or width of the tank cover 1. The spacing between adjacent spray pipes 2 is determined according to the spray range of a single spray pipe 2, ensuring that the coverage area has no overlapping blind spots. Each spray pipe 2 is fixed to the tank cover 1 by an independent pipe clamp or bracket, and the installation method of the fixing structure is the same as that of a single spray pipe 2. For example, on a rectangular tank cover 1, three spray pipes 2 are arranged parallel to each other along the length direction. Each spray pipe 2 is fixed by four evenly distributed pipe clamps, and the spacing between adjacent spray pipes 2 is equal, ensuring that the cleaning liquid can cover the entire inner surface of the tank cover 1.

[0040] Multiple spray pipes 2 are spaced apart on the tank cover 1, which can further expand the spray coverage of the cleaning liquid, so that every corner of the surface of the tank cover 1 can be covered by the cleaning liquid, and different areas can be cleaned at the same time, improving cleaning efficiency.

[0041] In some embodiments, multiple rows of through holes are spaced apart at the bottom of the spray pipe 2. Each row of through holes includes multiple through holes 21 spaced apart along the axial direction of the spray pipe 2. The multiple rows of through holes are spaced apart around the circumferential direction of the spray pipe 2.

[0042] For example, multiple rows of through holes can be drilled along the axial direction in the bottom area of ​​the spray pipe 2 using a drilling process, combined with the attached... Figure 1 and attached Figure 2 As can be seen, each through hole 21 is evenly spaced, and each row of through holes is staggered at a certain angle in the circumferential direction to ensure a more uniform spraying range.

[0043] By creating multiple rows of through-holes, the cleaning solution can be sprayed from different angles and positions, forming a more uniform coverage area, reducing blind spots, and enhancing the rinsing effect on alkali crystals.

[0044] In some embodiments, the system further includes a cleaning fluid auxiliary tank 3, which has a storage cavity for storing cleaning fluid and is connected to the spray pipe 2.

[0045] The cleaning fluid auxiliary tank 3 is usually located on the outside of the tank body or on the equipment frame. In this embodiment, the cleaning fluid in the cleaning fluid auxiliary tank 3 can be hot water. Alkali crystals (such as crystals of strong alkalis like sodium hydroxide and potassium hydroxide) have high solubility in hot water, which can soften and dissolve the hard crystals adhering to the surface of the tank cover 1 more quickly, reducing the reaction time between the cleaning fluid and the crystals and improving cleaning efficiency.

[0046] The cleaning fluid auxiliary tank 3 is used to provide cleaning fluid to the spray pipe 2. The storage chamber can store a sufficient amount of cleaning fluid in advance to ensure the continuity of the cleaning process.

[0047] In some embodiments, it also includes: Booster pump 4, the input end of booster pump 4 is connected to cleaning liquid auxiliary tank 3, and the output end of booster pump 4 is connected to spray pipe 2; Hose 5 connects the cleaning fluid auxiliary tank 3, the booster pump 4, and the spray pipe 2 in sequence.

[0048] Combined with appendix Figure 3 As can be seen, one end of the booster pump 4 is connected to the spray pipe 2, and the other end is connected to the cleaning liquid auxiliary tank 3. The function of the booster pump 4 is to provide power for the delivery of the cleaning liquid. By increasing the pressure of the cleaning liquid, it can ensure that the cleaning liquid has sufficient impact force when it is sprayed out through the through hole 21 of the spray pipe 2. For example, when the alkali crystals on the inner surface of the tank cover 1 become hard due to long-term accumulation, the pressure of the cleaning liquid can be increased to a suitable range by the booster pump, so that the cleaning liquid can quickly break down the alkali crystals and flush them off the surface of the tank cover 1. During tank drainage or tank cleaning, the booster pump 4 is turned on to rinse the residual alkali liquid on the tank cover 1 with hot water spray. The hot water used for rinsing is discharged along with the liquid medium in the container. After the tank cover 1 is cleaned, the booster pump 4 is turned off, and the tank can resume normal liquid preparation and production without affecting the process cycle.

[0049] Specifically, the cleaning mode can be divided into manual and automatic modes based on the actual site conditions. The manual mode is relatively simple to modify. When changing the liquid medium in tank 1, the on-site operator manually turns on the switch of the booster pump 4 corresponding to tank cover 1 to clean the tank cover 1. The hot water used for rinsing is discharged along with the liquid medium in tank 1. When cleaning of tank cover 1 is completed or before adding new liquid medium to tank 1, the booster pump 4 is turned off. If the automatic mode is used, a PLC module on the main unit can be used for automatic control. Through a preset program, the booster pump 4, sensors, and other actuators are linked to complete the closed-loop operation of cleaning start, process control, and shutdown.

[0050] The booster pump 4 can increase the spray pressure of the cleaning fluid, enhance the impact of the cleaning fluid on stubborn alkali crystals, and improve the cleaning effect; the hose 5 has good flexibility, which makes it easy to connect the cleaning fluid auxiliary tank 3, the booster pump 4 and the spray pipe 2, adapt to different installation layouts, and make the assembly and maintenance of the device more convenient.

[0051] In some embodiments, a regulating valve 6 is also included, which is disposed on a hose 5 between the booster pump 4 and the spray pipe 2, and is used to control the water flow rate.

[0052] Combination Figure 3 It can be seen that the regulating valve 6 is installed in series on the hose 5. Specifically, in the path of the cleaning fluid flowing from the booster pump 4 to the spray pipe 2 in the hose 5, the two ends of the regulating valve 6 are connected to the corresponding interfaces of the hose 5, which can be done by means of threaded connection, flange connection or quick coupling, etc.

[0053] The flow rate of cleaning fluid entering the spray pipe 2 through the hose 5 can be controlled by adjusting the opening of valve 6. For example, when it is necessary to enhance the cleaning power against alkali crystals, the opening of valve 6 can be increased to allow more cleaning fluid to pass through quickly and increase the spray impact force; if only light cleaning and maintenance of the tank cover 1 is required, the opening can be reduced to reduce the amount of cleaning fluid used and avoid waste.

[0054] The regulating valve 6 can adjust the water flow according to the actual situation of alkali crystallization on the surface of the tank cover 1. When there is less alkali crystallization on the surface of the tank cover 1, the water flow is reduced to save cleaning solution. When there is more or more stubborn crystallization, the water flow is increased to improve the cleaning intensity and enhance the applicability of the device.

[0055] In some embodiments, the diameter of the through hole 21 is 1 mm to 5 mm.

[0056] The specific size of the through hole 21 can be selected according to the required spray pressure. The through hole 21 within this size range can make the cleaning fluid form a jet with sufficient impact force under the normal pressure provided by the booster pump. If the hole diameter is too large, the flow rate of the cleaning fluid will decrease under the same pressure, which will weaken the impact force of the cleaning fluid and make it difficult to remove stubborn alkali crystals. If the hole diameter is too small, although the flow rate is fast, the amount of cleaning fluid sprayed per unit time is too small, the coverage area is limited, and there may be some areas where alkali crystals cannot be removed.

[0057] The diameter of the through hole 21 is set to 1mm~5mm, which can ensure that the cleaning liquid has sufficient spray force to remove crystals, while avoiding waste of cleaning liquid due to excessively large hole diameter, or blockage of through hole 21 due to excessively small hole diameter, thus ensuring stable operation of spray pipe 2 and reliable cleaning effect.

[0058] In some embodiments, four rows of through holes are formed around the spray pipe 2 in the circumferential direction, and the opening directions of the through holes are at angles of 75°, 25°, -25° and -75° with the horizontal plane, respectively.

[0059] The opening directions of the through-hole group are at angles of 75°, 25°, -25° and -75° with the horizontal plane, respectively. This specific angle setting allows the cleaning liquid to be sprayed onto the tank wall from multiple different tilt angles, which can better cover all surfaces of the tank, including some corners and crevices that are difficult to clean directly, further improving the comprehensiveness and effectiveness of cleaning.

[0060] In some embodiments, a rotating shaft is also included, which is disposed at at least one end of the spray pipe 2 along its axial direction, and the spray pipe 2 is rotatably connected to the tank cover 1 via the rotating shaft.

[0061] The rotating shaft is arranged along the length of the spray pipe 2. For example, the rotating shaft can be connected to the spray pipe by a key or snap-fit. Both ends of the rotating shaft are mounted on the bracket of the tank cover 1 through bearing seats. The bearing seats are fixed to the tank cover 1 by bolts, so that the spray pipe 2 can rotate around the rotating shaft. If necessary, positioning pins or dampers can be added to limit the rotation angle of the spray pipe 2.

[0062] During the cleaning process, because the spray pipe 2 can rotate around the rotation axis, the spray direction of the through hole 21 can be changed by adjusting the angle. This allows the cleaning liquid to not only cover the fixed area but also to directionally rinse blind areas such as the edges and corners of the inner surface of the tank cover 1 where crystals easily accumulate. For example, when crystals accumulate at the edge of the tank cover, the spray pipe 2 can be rotated so that the through hole 21 faces the edge area to clean the areas that the spray pipe 21 cannot cover.

[0063] The spray pipe 2 is rotatably connected to the tank cover 1 via a rotating shaft. The angle of the spray pipe 2 can be adjusted according to the distribution of alkali crystals on the inner surface of the tank cover 1, so that the cleaning liquid can be sprayed onto the area where the crystals are more concentrated, thereby improving the targeting and effectiveness of the cleaning.

[0064] According to an embodiment of the present invention, another aspect is provided: a photovoltaic wet processing device. The photovoltaic wet processing device has a control system, which is used to realize the automatic discharge and replenishment of alkaline solution in the tank, and forms a linkage control with the aforementioned photovoltaic wet tank alkaline crystallization cleaning device to realize the automation of the entire photovoltaic wet processing process.

[0065] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A photovoltaic wet process tank alkaline crystallization cleaning device, characterized in that, include: The tank has a receiving cavity for containing a liquid medium, and an opening is formed on the tank. A groove cover (1) is provided on the opening; Spray pipe (2), the spray pipe (2) is disposed on the side of the tank cover (1) facing the receiving cavity, the spray pipe (2) has a through hole (21), and the spray pipe (2) is adapted to spray cleaning liquid in at least two directions.

2. The photovoltaic wet process tank alkaline crystallization cleaning device according to claim 1, characterized in that, The spray pipe (2) is provided in multiple ways, and the multiple spray pipes (2) are arranged at intervals on the tank cover (1).

3. The photovoltaic wet process tank alkaline crystallization cleaning device according to claim 1, characterized in that, Multiple rows of through holes are spaced apart at the bottom of the spray pipe (2). Each row of through holes includes multiple through holes (21) spaced apart along the axial direction of the spray pipe (2). The multiple rows of through holes are spaced apart around the circumferential direction of the spray pipe (2).

4. The photovoltaic wet process tank alkaline crystallization cleaning device according to claim 1, characterized in that, It also includes a cleaning fluid auxiliary tank (3), which has a storage cavity for storing cleaning fluid and is connected to the spray pipe (2).

5. The photovoltaic wet process tank alkaline crystallization cleaning device according to claim 4, characterized in that, Also includes: A booster pump (4) is connected to the cleaning liquid auxiliary tank (3) at its input end and to the spray pipe (2) at its output end. The hose (5) is used to sequentially connect the cleaning liquid auxiliary tank (3), the booster pump (4) and the spray pipe (2).

6. The photovoltaic wet process tank alkaline crystallization cleaning device according to claim 5, characterized in that, It also includes a regulating valve (6), which is installed on the hose (5) between the booster pump (4) and the spray pipe (2), and the regulating valve (6) is used to control the water flow.

7. The photovoltaic wet process tank alkaline crystallization cleaning device according to claim 1, characterized in that, The diameter of the through hole (21) is 1mm to 5mm.

8. The photovoltaic wet process tank alkaline crystallization cleaning device according to claim 3, characterized in that, Four rows of through holes are opened around the circumference of the spray pipe (2), and the opening directions of the through holes are at angles of 75°, 25°, -25° and -75° to the horizontal plane, respectively.

9. The photovoltaic wet process tank alkaline crystallization cleaning apparatus according to any one of claims 1 to 8, characterized in that, It also includes a rotating shaft, which is disposed at at least one end of the spray pipe (2) in the axial direction, and the spray pipe (2) is rotatably connected to the tank cover (1) through the rotating shaft.

10. A photovoltaic wet processing device, characterized in that, The photovoltaic wet process tank alkaline crystallization cleaning device according to any one of claims 1 to 9, wherein the photovoltaic wet process treatment equipment has a control system for realizing the automatic discharge and replenishment of alkaline solution in the tank.

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