Protective liquid auxiliary structure in chain cleaning apparatus for solar cell production

Abstract

The utility model relates to the chain type cleaning equipment of solar cell production's protective fluid auxiliary structure, including a plurality of setting gradually protective fluid spray pool I, pickling pool II in chain type cleaning equipment, be provided with a plurality of roll cylinder in each pool's top, be provided with protective fluid spraying mechanism in protective fluid spray pool I, the pickling pool II is equipped with the etching acid that can circulate and the lower part of corresponding roll cylinder is contacted with etching acid, still include first auxiliary mechanism, first auxiliary mechanism sets up in protective fluid spray pool I, and is located the previous workstation department of protective fluid spraying mechanism, and is located the top of corresponding roll cylinder, the auxiliary frame is equipped with in first auxiliary mechanism, and the auxiliary frame is rectangular frame, is installed sealing ring at the inner wall department of auxiliary frame, first auxiliary mechanism can cover the auxiliary frame on the battery board of roll cylinder in protective fluid spray pool I. The utility model reaches the beneficial effect is: can avoid the protective fluid to drop in pickling pool, thereby avoids the influence to the concentration in pickling pool, and further guarantees etching effect.

Description

Technical Field

[0001] This utility model relates to the field of solar cell manufacturing technology, and in particular to the protective liquid auxiliary structure in a chain cleaning equipment used in solar cell production. Background Technology

[0002] During the manufacturing process of solar panels, the surface of the panels is etched by acid / alkali. For example, the process may involve spraying a protective film onto the surface of the panel, followed by acid washing, water washing, and drying (or other process steps).

[0003] In equipment for acid washing / water washing: a. It is usually implemented using a long tank body with multiple rollers mounted on it (these rollers are driven by chains, hence the entire cleaning equipment is also called a chain cleaning machine); b. In addition, the long tank body is divided into multiple smaller long tank units by multiple partitions, each containing acid or water (called acid washing tanks / water washing tanks); c. During operation, the solar panels are placed on the rollers and passed through different washing tanks. The surface of the rollers has a nap, and its lower cylindrical surface can contact the liquid in the corresponding washing tank. As the rollers rotate, a certain amount of liquid adheres to the nap and comes into contact with the lower surface of the solar panels, thereby completing the etching / cleaning process.

[0004] In the pickling tank, as the rollers rotate and the lint comes into contact with the lower surface of the solar panel, some acid may splash (almost invisible to the naked eye). This splashed acid can fall onto the upper surface of the solar panel, causing etching on the upper surface (the target is the lower surface, not the upper surface). To protect the upper surface of the solar panel, some companies spray a protective film onto it, thus preventing the splashed acid from etching the upper surface.

[0005] The problem is that after the protective film is applied to the nozzle, some of the film drips into the pickling tank during the pickling process (the dripping is quite severe). This causes changes in the acid concentration within the pickling tank, thus affecting the etching effect. Our current solution is to increase the acid circulation speed within the pickling tank to reduce the impact of concentration changes (by promptly removing the altered acid). However, this introduces new problems: significant fluctuations in the liquid level within the pickling tank and uneven acid flow from the rollers also negatively impact the etching effect.

[0006] Based on this, the solution has been further improved. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a protective liquid auxiliary structure for a chain cleaning equipment used in solar cell production, thereby solving the problem that the protective liquid in the existing chain cleaning equipment will drip into the acid washing tank, thus affecting the acid concentration and consequently the etching effect.

[0008] The purpose of this utility model is achieved through the following technical solution: a protective liquid auxiliary structure in a chain cleaning equipment for solar cell production. The chain cleaning equipment includes multiple protective liquid spraying tanks I and pickling tanks II arranged in sequence. Multiple rollers are arranged above each tank. The rollers are connected to the drive mechanism via chains. A protective liquid spraying mechanism is arranged in the protective liquid spraying tank I. The pickling tank II is filled with circulating etching acid and the lower part of the corresponding roller is in contact with the etching acid.

[0009] It also includes a first auxiliary mechanism, which is located in the protective liquid spraying pool I, at the previous station of the protective liquid spraying mechanism, and above the corresponding roller.

[0010] The first auxiliary mechanism contains an auxiliary frame, which is rectangular, and a sealing ring is installed on the inner wall of the auxiliary frame; the first auxiliary mechanism can fit the auxiliary frame onto the battery plate of the roller in the protective liquid spraying pool I.

[0011] When the auxiliary frame is fitted onto the battery panel to form an assembly, the upper edge of the auxiliary frame is higher than the upper surface of the battery panel. At this time, the inner wall of the auxiliary frame is sealed to the outer wall of the battery panel by a sealing ring, and the battery panel has a recessed structure that can hold liquid.

[0012] When the assembly is moved to below the protective liquid spraying mechanism under the action of the roller, the protective liquid sprayed by the protective liquid spraying mechanism is contained in the recessed structure.

[0013] As a preferred technical solution of this application, it further includes a second auxiliary mechanism; the second auxiliary mechanism is disposed in the protective liquid spraying tank I and located at the post station of the protective liquid spraying mechanism; the second auxiliary mechanism includes a downward blowing section, which is located above the corresponding roller, and is equipped with multiple air nozzles A that blow air from top to bottom and from inside to outside. When the assembly is moved below the downward blowing section under the action of the roller, the gas sprayed from the air nozzles A can blow away a portion of the protective liquid in the recessed structure of the assembly, causing the level of the protective liquid in the recessed structure to drop.

[0014] As a preferred technical solution of this application, the second auxiliary mechanism further includes an upward blowing section located below the corresponding roller, and multiple air nozzles B installed on the upward blowing section from bottom to top and from inside to outside. When the assembly is moved above the upward blowing section under the action of the roller, the gas sprayed from the air nozzles B can blow away the droplets hanging from the edges of the assembly.

[0015] As a preferred technical solution of this application, it also includes a liquid receiving tank; the liquid receiving tank is disposed on the inner wall of the pickling tank II and close to the protective liquid spraying tank I; so that any residual liquid droplets in the assembly can be caught by the liquid receiving tank.

[0016] Furthermore, the first auxiliary mechanism includes a vertical barrel and multiple electromagnetic telescopic pins; the vertical barrel is connected to the lifting mechanism; the horizontal cross-section of the vertical barrel is rectangular, and multiple electromagnetic telescopic pins are sequentially installed from top to bottom on the left and right side plates of the vertical barrel near the front and rear ends, with the spacing between adjacent electromagnetic telescopic pins; the outer frame of the auxiliary frame has a ring of rectangular protrusions, which can be locked in place when adjacent electromagnetic telescopic pins extend. The protective liquid spray tank I is equipped with multiple laser sensors, which can sense the position of the solar panel; the laser sensors are electrically connected to the lifting mechanism and electromagnetic telescopic pins via a control panel.

[0017] Furthermore, in the protective liquid spraying tank I, a position calibration mechanism is also provided at the station before the first auxiliary mechanism; the position calibration mechanism is set on the upper surface of the corresponding roller by a support rod, and the position calibration mechanism includes two parallel vertical plates with outwardly opening flares at both ends of the two vertical plates, and the distance between the two vertical plates is consistent with the width of the battery panel.

[0018] When the corresponding roller under the solar panel moves upward, it enters between the two vertical plates through the corresponding flare, thereby calibrating the position of the solar panel.

[0019] Furthermore, the downward blowing part also includes an air chamber A; the air chamber A is rectangular in shape, and its lower surface is provided with multiple air nozzles A, which are connected to corresponding high-pressure air sources.

[0020] Furthermore, the upward blowing part also includes an air chamber B; the air chamber B is rectangular in shape, and its lower surface is provided with multiple air nozzles B, which are connected to corresponding high-pressure air sources.

[0021] This invention has the following advantages: it can prevent the protective liquid from falling into the pickling tank, thereby avoiding affecting the concentration in the pickling tank and ensuring the etching effect;

[0022] Specifically: a. After the auxiliary frame is fitted onto the recessed structure formed on the solar panel (forming an assembly pile), the protective fluid can be well stored within the recessed structure, ensuring that no protective fluid falls into the acid washing tank when the assembly (with the auxiliary frame fitted onto the solar panel) is moved to the acid washing tank; b. Then, the downward blowing part in the second auxiliary mechanism reduces the amount of protective fluid in the recessed structure, preventing excess protective fluid from overflowing. Furthermore, the upward blowing part blows away any dripping fluid from the edges of the assembly, further ensuring that no protective fluid falls into the acid washing tank when the assembly (with the auxiliary frame fitted onto the solar panel) is moved to the acid washing tank; c. Finally, the liquid receiving tank (redundantly configured) further prevents excess acid from falling into the acid washing tank. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 A schematic diagram of the protective liquid spraying mechanism I;

[0025] Figure 3 A schematic diagram of the overall structure of the sorting mechanism assembly;

[0026] Figure 4 This is a schematic diagram of the overall assembly structure;

[0027] Figure 5 for Figure 4 Enlarged image of AA;

[0028] Figure 6 This is a schematic diagram of the auxiliary box structure;

[0029] Figure 7 Enlarged images of 6 types of BB;

[0030] Figure 8 This is a schematic diagram of the first auxiliary mechanism;

[0031] Figure 9 for Figure 7 Enlarged view of DD in the middle;

[0032] Figure 10 This is a schematic diagram of the electromagnetic telescopic pin.

[0033] Figure 11 A top view of an electromagnetic telescopic pin installed on a vertical barrel;

[0034] Figure 12 This is a schematic diagram of the structure at pickling tank II;

[0035] Figure 13 This is a structural schematic diagram of the washing pool III.

[0036] In the diagram: 200-auxiliary frame, 210-sealing ring, 220-rectangular protrusion, 300-battery panel, 400-assembly assembly, 500-liquid receiving tank;

[0037] 10-First auxiliary mechanism, 1001-Vertical barrel body, 1002-Electromagnetic telescopic pin, 1003-Up and down lifting mechanism, 20-Protective liquid spraying mechanism, 30-Second auxiliary mechanism, 31-Downward blowing part, 3101-Air nozzle A, 3102-Air chamber A, 32-Upward blowing part, 3201-Air nozzle B, 3202-Air chamber B. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0039] It should be noted that the orientation or positional relationship indicated by terms such as "left" and "right" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this utility model is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. Such terms 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. Therefore, they should not be construed as limitations on this utility model.

[0040] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0041] like Figures 1-13 As shown, the protective liquid auxiliary structure in the chain cleaning equipment used for solar cell production includes multiple protective liquid spraying tanks I and pickling tanks II arranged in sequence. Multiple rollers are arranged above each tank, and the rollers are connected to the drive mechanism via chains. The protective liquid spraying tank I is equipped with a protective liquid spraying mechanism 20, and the pickling tank II is filled with circulating etching acid, and the lower part of the corresponding roller is in contact with the etching acid.

[0042] Among them, a first auxiliary mechanism 10 is also provided in the protective liquid spraying pool I. The first auxiliary mechanism 10 is located at the previous station of the protective liquid spraying mechanism 20 and is located above the corresponding roller.

[0043] The first auxiliary mechanism 10 contains an auxiliary frame 200, which is a rectangular frame. A sealing ring 210 is installed on the inner wall of the auxiliary frame 200. The first auxiliary mechanism 10 can fit the auxiliary frame 200 onto the solar panel 300 of the roller in the protective liquid spraying pool I.

[0044] When the first auxiliary mechanism 10 is working: the first auxiliary mechanism 10 fits its internal auxiliary frame 200 onto the battery panel 300 below it. During fitting, the upper edge of the auxiliary frame 200 is higher than the upper surface of the battery panel 300, and the inner wall of the auxiliary frame 200 is sealed to the outer wall of the battery panel 300 by the sealing ring 210. In this way, the auxiliary frame 200 and the battery panel 300 form an assembly 400, which allows the upper surface of the battery panel 300 to form a cavity that can hold liquid.

[0045] The function is as follows: When the assembly 400 moves to the subsequent station under the action of the rollers, when the assembly 400 moves to the protective liquid spraying mechanism 200, the protective liquid sprayed by the protective spraying mechanism 200 is located in the concave cavity; the protective liquid in the concave cavity forms a protection for the upper surface of the solar panel, and when the assembly 400 moves to the pickling tank II, the protective liquid in the concave cavity is less likely to fall into the pickling tank II (compared to spraying the protective liquid on the upper surface of the solar panel without the auxiliary frame 200), thereby avoiding affecting the acid concentration in the pickling tank II and avoiding affecting the pickling effect on the lower surface of the solar panel.

[0046] It should be noted that, as Figure 7 As shown, when the auxiliary frame is fitted onto the solar panel 300, there may be very small gaps in some places. Figure 7 (This is just an exaggerated illustration), but due to surface tension, the protective liquid will not fall out of the cavity at this gap.

[0047] In this design, to further prevent protective liquid droplets from falling into pickling tank II, a second auxiliary mechanism 30 is designed in addition to the upper structure. The second auxiliary mechanism 30 will be further explained below.

[0048] Specifically, see Figure 1 and Figure 2 As shown, a second auxiliary mechanism 30 is also provided in the protective liquid spraying tank I, located at the station after the protective liquid spraying mechanism 20. The second auxiliary mechanism 30 includes a downward blowing section 31, located above the corresponding rollers. Multiple air nozzles A3101 are installed on the downward blowing section 31 to blow air from top to bottom and from inside to outside. During operation, when the assembly 400 moves under the action of the rollers to below the downward blowing section 31, the gas sprayed from the air nozzles A3101 can blow away a portion of the protective liquid in the concave cavity of the assembly 400, causing the liquid level in the concave cavity to drop—thus preventing the protective liquid in the concave cavity from overflowing. Therefore, when the assembly 400 moves to the pickling tank II, no overflowing protective liquid will drip into the pickling tank II.

[0049] Furthermore, the second auxiliary mechanism 30 is further designed.

[0050] See Figure 1 and Figure 2 The second auxiliary mechanism 30 also includes an upward air blowing section 32; wherein, the upward air blowing section 32 is located below the corresponding roller, and multiple air nozzles B3201 are installed on the upward air blowing section 32 from bottom to top and from inside to outside. During operation, when the assembly 400 is moved above the upward air blowing section 32 under the action of the roller, the gas sprayed from the air nozzles B3201 can blow away the droplets hanging from the edges of the assembly 400.

[0051] In this plan, refer to Figure 5 Optionally (and generally not), the chain cleaning equipment used in solar cell production also includes a liquid receiving tank 500. The liquid receiving tank 500 is located on the inner wall of the pickling tank II and close to the protective liquid spraying tank I, so that any residual liquid droplets on the assembly 400 can be caught by the liquid receiving tank 500.

[0052] It should be noted that the downward blowing section 31 also includes an air chamber A3102; the air chamber A3102 is rectangular in shape, and its lower surface is provided with multiple air nozzles A3101, which are connected to corresponding high-pressure air sources. The upward blowing section 32 also includes an air chamber B3202; the air chamber B3202 is rectangular in shape, and its lower surface is provided with multiple air nozzles B3201, which are connected to corresponding high-pressure air sources.

[0053] The first auxiliary mechanism 10 will be further explained below.

[0054] See Figure 8 and Figure 8 The first auxiliary mechanism 10 includes a vertical barrel 1001 and multiple electromagnetic telescopic pins 1002. The vertical barrel 1001 is connected to the lifting mechanism 1003. The horizontal cross-section of the vertical barrel 1001 is rectangular. Multiple electromagnetic telescopic pins 1002 are installed from top to bottom on the left and right side plates of the vertical barrel 1001 near the front and rear ends, respectively. The spacing between adjacent electromagnetic telescopic pins 1002 is set. The outer frame wall of the auxiliary frame 200 has a rectangular protrusion 220. When the adjacent electromagnetic telescopic pins 1002 extend, they can lock the rectangular protrusion 220 at its vertical position.

[0055] In addition, multiple laser sensors are installed in the protective liquid spraying pool I. The laser sensors can sense the position of the solar panel 300. The laser sensors are electrically connected to the lifting mechanism 1003 and the electromagnetic telescopic pin 1002 via the control panel.

[0056] It should be noted that the electromagnetic telescopic pin 1002 is existing technology and can be designed in various ways. For example, it can be selected... Figure 10The design includes an outer cylinder and a telescopic pin. The telescopic pin is telescopically mounted inside the outer cylinder, and a permanent magnet is embedded in the bottom of the telescopic pin. An electromagnetic coil is located near the bottom of the outer cylinder. When the electromagnetic coil is energized in either the positive or negative direction, it causes the telescopic pin to extend or retract.

[0057] In this embodiment, see Figure 3 As shown, in the protective liquid spraying tank I, a position calibration mechanism 600 is also provided at the station before the first auxiliary mechanism 10. The position calibration mechanism 600 is set on the upper surface of the corresponding roller by a support rod. The position calibration mechanism 600 includes two parallel vertical plates with outwardly flared openings at both ends of the two vertical plates. The distance between the two vertical plates is consistent with the width of the solar panel 300. When the solar panel 300 moves up the corresponding roller, it enters between the two vertical plates through the corresponding flared openings, thereby calibrating the position of the solar panel 300.

[0058] The above embodiments only illustrate preferred implementation methods, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A protective liquid auxiliary structure in a chain cleaning device for solar cell production, the chain cleaning device including multiple protective liquid spraying tanks I and pickling tanks II arranged sequentially, with multiple rollers arranged above each tank, the rollers being connected to a drive mechanism via chains, a protective liquid spraying mechanism (20) being provided in the protective liquid spraying tank I, and the pickling tank II containing circulating etching acid with the lower part of the corresponding roller in contact with the etching acid, characterized in that: It also includes a first auxiliary mechanism (10), which is located in the protective liquid spraying pool I, at the position before the protective liquid spraying mechanism (20), and above the corresponding roller; The first auxiliary mechanism (10) contains an auxiliary frame (200), which is a rectangular frame. A sealing ring (210) is installed on the inner wall of the auxiliary frame (200). The first auxiliary mechanism (10) can fit the auxiliary frame (200) onto the battery panel (300) of the roller in the protective liquid spraying pool I. When the auxiliary frame (200) is fitted onto the battery panel (300), it forms an assembly (400). At this time, the upper edge of the auxiliary frame (200) is higher than the upper surface of the battery panel (300). At this time, the inner wall of the auxiliary frame (200) is sealed to the outer wall of the battery panel (300) by the sealing ring (210). There is a cavity in the battery panel (300) that can hold liquid. When the assembly (400) is moved to below the protective liquid spraying mechanism (20) under the action of the roller, the protective liquid sprayed by the protective liquid spraying mechanism (20) is filled in the cavity.

2. The protective liquid assisting structure in the chain cleaning apparatus for solar cell production according to claim 1, characterized by: It also includes a second auxiliary mechanism (30); The second auxiliary mechanism (30) is installed in the protective liquid spraying pool I and is located at the next station after the protective liquid spraying mechanism (20); The second auxiliary mechanism (30) includes a downward blowing part (31), which is located above the corresponding roller. Multiple air nozzles A (3101) are installed on the downward blowing part (31) to blow air from top to bottom and from inside to outside. When the assembly (400) is moved to below the downward blowing part (31) under the action of the roller, the gas sprayed by the air nozzle A (3101) can blow away part of the protective liquid in the concave cavity of the assembly (400), causing the liquid level of the protective liquid in the concave cavity to drop.

3. The protective liquid assisting structure in the chain cleaning apparatus for solar cell production according to claim 2, characterized by: The second auxiliary mechanism (30) further includes an upward blowing part (32), which is located below the corresponding roller. Multiple air nozzles B (3201) are installed on the upward blowing part (32) from bottom to top and from inside to outside. When the assembly (400) is moved above the upward blowing part (32) by the action of the roller, the gas ejected by the nozzle B (3201) can blow away the droplets hanging from the edge of the assembly (400).

4. The protective liquid auxiliary structure in the chain cleaning equipment for solar cell production according to any one of claims 1 to 3, characterized in that: It also includes a liquid receiving tank (500); The liquid receiving tank (500) is located on the inner wall of the pickling tank II and close to the protective liquid spraying tank I; so that any residual liquid droplets on the assembled whole (400) can be caught by the liquid receiving tank (500).

5. The protective liquid auxiliary structure in the chain cleaning equipment for solar cell production according to claim 1, characterized in that: The first auxiliary mechanism (10) includes a vertical barrel (1001) and multiple electromagnetic telescopic pins (1002). The vertical barrel (1001) is connected to the vertical lifting mechanism (1003); The horizontal cross-section of the vertical barrel (1001) is rectangular. Multiple electromagnetic telescopic pins (1002) are installed from top to bottom on the left and right side plates of the vertical barrel (1001) near the front and rear ends, respectively. The spacing between adjacent electromagnetic telescopic pins (1002) is set. The auxiliary frame (200) has a rectangular protrusion (220) around its outer frame wall. When the adjacent electromagnetic telescopic pins (1002) extend, they can lock the rectangular protrusion (220) in its upper and lower positions. The protective liquid spraying pool I is equipped with multiple laser sensors, which can sense the position of the battery panel (300); the laser sensors are electrically connected to the lifting mechanism (1003) and the electromagnetic telescopic pin (1002) via the control panel.

6. The protective liquid auxiliary structure in the chain cleaning equipment for solar cell production according to claim 5, characterized in that: In the protective liquid spraying pool I, a position calibration mechanism (600) is also provided at the station before the first auxiliary mechanism (10). The position calibration mechanism (600) is set on the upper surface of the corresponding roller by a support rod. The position calibration mechanism (600) includes two parallel vertical plates with outwardly opening flares at both ends of the two vertical plates. The distance between the two vertical plates is consistent with the width of the battery panel (300). When the lower roller of the solar panel (300) moves upward, it enters between the two vertical plates through the corresponding flare, thereby calibrating the position of the solar panel (300).

7. The protective liquid auxiliary structure in the chain cleaning equipment for solar cell production according to claim 3, characterized in that: The downward blowing part (31) further includes an air chamber A (3102); the air chamber A (3102) is rectangular in shape, and its lower surface is provided with a plurality of air nozzles A (3101), which are connected to the corresponding high-pressure air source.

8. The protective liquid auxiliary structure in the chain cleaning equipment for solar cell production according to claim 7, characterized in that: The upward blowing part (32) further includes an air chamber B (3202); the air chamber B (3202) is rectangular in shape, and its lower surface is provided with a plurality of air nozzles B (3201), which are connected to the corresponding high-pressure air source.

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