Foam cleaning device and groove type equipment

Abstract

The utility model belongs to the field of photovoltaic wet process equipment, and particularly relates to a foam cleaning device and groove type equipment. The foam cleaning device comprises a suction head used for extracting foam; the suction power part is used for providing power for foam extraction; the suction pipe group is communicated with the suction head and the suction power piece; the position state of the suction pipe set comprises a working position where the suction head is in contact with the liquid level of the working liquid and a standby position where the suction pipe set avoids an area above the groove type equipment; the suction pipe group is provided with a rotating track around the turnover shaft; the rotating track at least comprises a working position and a standby position. The device is matched with a process tank for loading a working solution for use, and foam on the surface of the working solution is effectively extracted by using components such as the suction head, the suction power piece and the suction pipe group. The suction pipe set has the capacity of rotating around the turnover shaft through the turnover shaft, the suction pipe set can be switched between the working position and the standby position, cleaning operation can be rapidly started, and the normal working process of the slot type equipment can be prevented from being disturbed.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic wet process equipment, specifically relating to a foam cleaning device and a trough-type equipment. Background Technology

[0002] Patterning is a crucial step in photovoltaic (PV) cell manufacturing. Currently, a common patterning process involves transferring the circuit pattern design from a photomask onto a silicon wafer using photolithography and other techniques. The photomask material plays a vital role in pattern replication and transfer in this process, and it must be cleaned and removed immediately afterward. In wet chemical removal processes, the chemical reaction between the photomask material and the removal solution, as well as physical stirring or spraying, can generate significant amounts of foam, affecting removal efficiency. Common mechanical defoaming devices, limited by their defoaming principle, need to be installed at the top of the container or in a central position above the liquid surface. However, in PV cell manufacturing, the baskets carrying the silicon wafers need to move vertically from the top of the trough-type equipment to reduce wafer vibration, creating a conflict between the mechanical defoaming device and the basket's transport path. Utility Model Content

[0003] This invention aims to provide a foam cleaning device that can quickly clean up the foam generated during mask removal without interfering with the process flow of the trough equipment.

[0004] This utility model is achieved through the following technical solution:

[0005] A foam cleaning device is used in conjunction with a process tank containing a working fluid, the process tank comprising a tank body and a tank cover; characterized in that the foam cleaning device comprises:

[0006] A suction head is used to extract foam.

[0007] The suction power component provides the power to extract the foam.

[0008] A suction tube assembly connects the suction head to the suction power component;

[0009] The position of the suction tube assembly includes the working position where the suction head is in contact with the working fluid surface, and the standby position where the suction tube assembly avoids the area above the process tank.

[0010] The suction tube assembly completes the switching between the working position and the standby position by rotating and forms a corresponding rotation trajectory;

[0011] The rotation is based on a flip axis; the rotation trajectory covers at least the working position and the standby position.

[0012] This device works in conjunction with a process tank containing the working fluid, effectively removing foam from the surface of the working fluid using components such as a suction head, suction power unit, and suction pipe assembly. The tilting shaft allows the suction pipe assembly to rotate around the tilting shaft, switching between working and standby positions. This enables rapid initiation of cleaning operations while avoiding interference with the normal operation of the tank-type equipment.

[0013] Preferably, the suction tube assembly includes a proximal section that is close to or coincides with the flip axis and a distal section that is far from the flip axis; when the suction tube assembly is in the working position, both the proximal section and the distal section are parallel to the horizontal direction.

[0014] Preferably, when the suction tube assembly is at any position on the rotation trajectory, both the proximal segment and the distal segment are parallel to the horizontal direction.

[0015] When in the working position, the horizontally arranged suction pipe assembly can fit against the liquid surface of the tank, resulting in uniform extraction and avoiding the occurrence of residual foam on the liquid surface in some areas. At any position on the rotation trajectory, the fluid state inside the near-axis section and the far-axis section remains stable, preventing the fluid from accumulating in a certain area and forming a liquid seal-like structure that could cause pipe blockage.

[0016] Preferably, the distal axis segment is at a position on the rotation trajectory that is not lower than the height of the proximal axis segment.

[0017] Preferably, the suction tube assembly is connected to the suction power component via a confluence section, and the confluence section is not higher than the height of the near-axis section.

[0018] Preferably, when the suction tube assembly is at any position on the rotation trajectory, the position of the near-axis section is not lower than the height of the flip axis.

[0019] When the proximal and distal sections are at the same height, the fluid flow direction within the suction tube assembly is entirely controlled by the suction drive mechanism. When the proximal and distal sections are at different heights, the liquid in the tube will accumulate in the proximal section due to gravity. The proximal section is positioned higher than the confluence section to ensure that the liquid can flow smoothly to the suction drive mechanism without flow obstruction caused by height differences. The proximal section is always maintained at or above the tilting shaft. At this position, the proximal and distal sections are on the same side of the tilting shaft, and the centrifugal forces experienced internally during tilting have the same direction. The fluid flow direction within the entire suction tube assembly is controllable, the pressure is balanced, and the suction rate is stable.

[0020] Preferably, the suction heads are arranged in multiple groups and distributed on the side of the suction tube group facing the liquid surface.

[0021] Preferably, the rotation of the suction tube assembly is driven by a flipping drive.

[0022] Preferably, the suction pipe assembly is fixed to the tank cover of the process tank, and the flipping shaft coincides with the opening and closing shaft of the tank cover. This installation method simplifies the overall tank preparation device, and the design of the flipping shaft coinciding with the opening and closing shaft of the tank cover allows the suction pipe assembly to move when the tank cover is opened, without hindering other operations.

[0023] This utility model also proposes a trough-type device, which includes a process trough and the foam cleaning device described in any of the above claims.

[0024] This invention effectively extracts surface foam from a tank-type device containing working fluid through the coordinated operation of a suction head, a suction power component, and a suction tube assembly. By introducing a tilting shaft and setting the rotation trajectory of the suction tube assembly, it achieves workstation avoidance along the basket conveying path. The suction tube assembly can be moved to a standby position when not in use, improving space utilization and reducing unnecessary contact with the working fluid, thus lowering the risk of contamination. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the device described in Example 1;

[0026] Figure 2 This is a schematic diagram of the device described in Example 2.

[0027] Legend:

[0028] 1. Suction head, 2. Suction power component, 3. Suction tube assembly, 4. Tilting shaft, 5. Near-shaft section, 6. Far-shaft section, 7. Converging section, 8. Tilting drive component, 9. Slot cover. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Those skilled in the art will be able to implement the present invention based on these descriptions. Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0030] Example 1

[0031] To ensure uniform and efficient foam cleaning, the foam cleaning device should ideally cover all areas of the liquid surface; however, the area above the liquid surface is also the working area of ​​the basket transfer device. To avoid conflicts between workstations, a flip-type foam cleaning device was designed.

[0032] Please see Figure 1The basic structure of the foam cleaning device includes a suction head 1, a suction power component 2, a suction pipe assembly 3, a tilting shaft 4, and a confluence section 7, which works in conjunction with the process tank. Multiple suction heads 1 are distributed on the side of the suction pipe assembly 3 facing the liquid surface in the tank, providing multiple suction points. The tilting shaft 4... Figure 1 The figures are marked with dashed lines. In the illustrated embodiment, the tilting shaft 4 is attached to the edge of the process tank body, perpendicular to the opening and closing shaft of the tank cover 9, and parallel to the liquid surface inside the tank. The portion of the suction pipe assembly 3 that is close to or overlaps with the tilting shaft 4 is the near-axis section 5, and the portion that is far from the tilting shaft 4 is the far-axis section 6. Figure 1 The example illustrates a scenario where the proximal segment 5 coincides with the tilting shaft 4. This embodiment also includes a tilting drive 8 to control the position of the suction tube assembly 3, allowing the entire suction tube assembly 3 to rotate around the tilting shaft 4 to switch between a working position and a standby position. The tilting drive 8 can be a power device such as a cylinder or a motor.

[0033] When the suction tube assembly 3 is in the working position, the suction head 1 is in contact with the surface of the working fluid. Both the proximal section 5 and the distal section 6 are horizontal to prevent liquid from accumulating locally within the suction tube assembly 3 during foam removal, thus preventing the formation of a liquid seal-like physical structure. When the suction tube assembly 3 is in the standby position, it avoids the area above the process tank, leaving a vertical passage for the baskets loading silicon wafers.

[0034] Driven by the suction power component 2, the foam inside the process tank flows sequentially through the suction head 1, the suction pipe group 3, and the confluence section 7, and is finally discharged from the waste liquid pipe.

[0035] To increase the distribution of suction heads 1, the suction tube assembly 3 is designed as a staggered network of pipes. However, this makes the internal liquid flow more chaotic, potentially affecting the efficiency of foam suction. Therefore, further optimization of the liquid flow direction within the suction tube assembly 3 is needed.

[0036] At any rotation position, both the proximal section 5 and the distal section 6 are horizontal, and the foam suction process is not adversely affected by airflow turbulence or pressure fluctuations caused by the inclination of the pipe sections. The proximal section 5 of the suction pipe assembly 3 is always kept above or at the same height as the tilting shaft 4, while the distal section 6 is always kept above or at the same height as the proximal section 5. When the suction pipe assembly 3 is in the working position, the proximal section 5 and the distal section 6 are at the same height. At this time, the liquid flow inside the suction pipe assembly 3 is only guided by the suction power component 2, avoiding interference from gravity on the flow direction. When the suction pipe assembly 3 is in the standby position or the transition position between the standby and working positions, the distal section 6 is higher than the proximal section 5. When the suction pipe assembly 3 is in the standby position, the height difference between the distal section 6 and the proximal section 5 is the largest. At this time, the liquid in the pipe will gather in the proximal section 5 in accordance with the direction of gravity. The paraxial section 5 is positioned higher than the confluence section 7 to ensure that the liquid can flow smoothly to the suction power component 2 without causing flow obstruction due to the height difference.

[0037] Example 2

[0038] To further save space, the foam cleaning device can be built on the existing flip-up structure of the process tank.

[0039] Please see Figure 2 The suction tube assembly 3 is fixed to the tank cover 9 of the process tank. The flip shaft 4 is marked with a dashed line in the figure; as mentioned above, the part of the suction tube assembly 3 that is close to or overlaps with the flip shaft 4 is the proximal section 5; Embodiment 1 illustrates the case where the flip shaft 4 and the proximal section 5 overlap, while this embodiment illustrates the case where the flip shaft 4 and the proximal section 5 are close to but do not overlap. In this case, the flip shaft 4 of the suction tube assembly 3 overlaps with the original opening and closing shaft of the tank cover 9, and the suction tube assembly 3 can move back and forth between the working position and the standby position with the opening and closing movement of the tank cover 9, without the need for a separate flip drive component 8.

[0040] Example 3

[0041] A tank-type cleaning device is provided, equipped with a process tank and the foam cleaning device described in Example 1.

[0042] Example 4

[0043] A tank-type cleaning device is provided, equipped with a process tank and the foam cleaning device described in Example 2.

Claims

1. A foam cleaning device for use in conjunction with a process tank (1) containing a working fluid, said process tank (1) comprising a tank body (2) and a tank cover (9); characterised in that, The foam cleaning device comprises: a suction head (1) for sucking foam; a suction power element (2) for providing power for sucking foam; a suction pipe group (3) connecting the suction head (1) and the suction power element (2); a position state of the suction pipe group (3) comprises a working position in which the suction head (1) is in contact with the working liquid surface, and a standby position in which the suction pipe group (3) avoids the area above the process tank; the suction pipe group (3) is switched between the working position and the standby position by rotation and forms a corresponding rotation track; the rotation is performed around a turnover shaft (4) as a rotation shaft; and the rotation track at least covers the working position and the standby position.

2. The foam cleaning device of claim 1, wherein, The suction pipe group (3) comprises a proximal segment (5) close to or coinciding with the turnover shaft (4) and a distal segment (6) away from the turnover shaft (4); when the suction pipe group (3) is in the working position, the proximal segment (5) and the distal segment (6) are both parallel to the horizontal direction.

3. The foam cleaning device of claim 2, wherein, When the suction pipe group (3) is in any position on the rotation track, the proximal segment (5) and the distal segment (6) are both parallel to the horizontal direction.

4. The foam cleaning device of claim 3, wherein, The distal segment (6) is not lower than the height of the proximal segment (5) at any position on the rotation track.

5. The foam cleaning device of claim 4, wherein, The suction pipe group (3) is connected to the suction power element (2) through a converging segment (7), and the setting position of the converging segment (7) is not higher than the height of the proximal segment (5).

6. The foam cleaning device of claim 4, wherein, When the suction pipe group (3) is in any position on the rotation track, the position of the proximal segment (5) is not lower than the height of the turnover shaft (4).

7. A foamed cleaning device according to any one of claims 1 to 6, wherein The suction head (1) is provided in multiple groups and distributed on the side of the suction pipe group (3) facing the liquid surface.

8. A foamed cleaning device according to any one of claims 1 to 6, wherein The rotation of the suction pipe group (3) is driven by a turnover driving element (8).

9. A foamed cleaning device according to any one of claims 1 to 3, wherein The suction pipe group (3) is fixed to a tank cover (9) of the process tank, and the turnover shaft (4) coincides with an opening and closing shaft of the tank cover (9).

10. A tank device comprising a process tank and the foam cleaning device according to any one of claims 1-9.

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