Waste gas pumping and discharging device for solar cell processing and texturing process

Abstract

The utility model discloses a waste gas pumping and discharging device for a solar cell processing and texturing process. The waste gas pumping and discharging device comprises a shell and a cleaning assembly, a plurality of air inlets are formed in the surface of the shell; a suction port is formed in the shell and is connected with a suction pump through a pipeline; the air outlet end of the sucking pump is connected with the filter; the sweeping assembly is arranged outside the shell and moves up and down along the shell under the action of the driving piece. The cleaning assembly of the waste gas pumping and discharging structure can conduct cleaning at regular intervals, and the cleanliness of the surface of the shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery sheet manufacturing, and more specifically to an exhaust gas exhaust device used in a texturing process of solar cell processing. Background Art

[0002] The existing preparation process of crystalline silicon solar cells is as follows: cleaning and texturing → diffusion → etching / PSG removal → PECVD → screen printing → sintering → testing and grading → sorting → packaging. The purpose of texturing is to form a velvet surface on the surface of the silicon wafer to reduce the reflectivity of the cell. The uneven velvet surface can increase secondary reflection and change the optical path and incident mode.

[0003] Texturing is generally carried out in a texturing tank, which generally includes a tank body, a chemical liquid circulation system and an exhaust gas suction system. The upper port of the tank body is open to facilitate the placement of a basket containing silicon wafers. The chemical liquid circulation system is used to circulate the chemical liquid to keep a uniform concentration. The exhaust gas suction system is used to suck out the exhaust gas gathered above the chemical liquid surface to ensure the safety of the working environment.

[0004] During the exhaust gas extraction process, a part of the exhaust gas will adhere to the outer surface of the exhaust gas extraction system. Over time, the outer surface of the exhaust gas extraction system will be polluted. In addition, the exhaust gas extraction system is generally installed on the side wall of the wool making tank, which makes it inconvenient to clean the attachments on the surface of the exhaust gas extraction system.

[0005] Therefore, it is an urgent problem for technicians in this field to develop an exhaust gas extraction device for solar cell processing and texturing process that can conveniently clean the surface exhaust gas attachments. Utility Model Content

[0006] In view of this, the utility model provides an exhaust gas exhaust device for solar cell processing and texturing process, which is convenient for cleaning the waste gas attachment on the surface.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] Exhaust gas extraction device for solar cell processing and texturing process, including:

[0009] A shell, wherein a plurality of air inlets are provided on the surface of the shell; a suction port is provided inside the shell, and the suction port is connected to an air pump through a pipeline; and an air outlet of the air pump is connected to a filter;

[0010] A cleaning component is arranged outside the shell and moves up and down along the shell under the action of a driving member.

[0011] The beneficial effect of adopting the above technical solution is that the cleaning component in the utility model is arranged along the surface of the shell, and can move up and down along the shell surface to clean the attachments on the shell surface; the operation is simple and easy to implement, and cleaning can be performed regularly.

[0012] Preferably, the air inlet is an elongated opening and is arranged vertically along the outer surface of the shell. The air inlet is arranged in this way to facilitate the cleaning component to move up and down for cleaning, and reduce the influence of the air inlet on the up and down movement of the cleaning component.

[0013] Preferably, the cleaning assembly comprises: a cleaning frame and a guide rod; the guide rod is arranged on both sides of the shell, the cleaning frame is arranged along the outer wall of the shell, and both ends of the cleaning frame are slidably connected to the guide rod; a brush is arranged on the side of the cleaning frame close to the shell, and the brush contacts the surface of the shell. The cleaning frame drives the brush to move along the guide rod, and can move up and down to clean the shell.

[0014] Preferably, the shape of the cleaning frame is the same as the external shape of the cleaning surface of the shell. This arrangement can make the brush clean the shell more comprehensively and thoroughly.

[0015] Preferably, the top and bottom of the guide rod are connected with a connecting plate, and the other end of the connecting plate is connected to the housing. The connection between the guide rod and the housing makes the process of the cleaning frame moving up and down more stable.

[0016] Preferably, a buffer pad is provided on one side of the connecting plate connected to the guide rod, and the buffer pad is sleeved on the outside of the guide rod.

[0017] Preferably, a slide groove is provided on the outer surface of the housing along its length direction, and a pulley is provided at a position of the cleaning frame corresponding to the slide groove, and the pulley is placed in the slide groove and moves along the slide groove, so that the up and down movement process of the cleaning frame is smoother and more stable.

[0018] Preferably, a moving rod is provided on the top of the cleaning frame, and the moving rod drives the cleaning frame to move up and down. The cleaning frame can be manually pushed to move by the moving rod to clean the shell surface.

[0019] Preferably, there is a limiting hole on the surface of the movable rod, and a limiting rod is inserted into the limiting hole; the top of the shell is above the top of the texturing groove; the top of the movable rod passes through the top plate of the texturing groove and is placed above the top plate of the texturing groove; the limiting rod is placed on the top of the top plate of the texturing groove.

[0020] Preferably, a collecting groove is provided at the bottom of the shell, and the collecting groove can clean up the attachments swept off the shell.

[0021] It can be seen from the above technical solution that, compared with the prior art, the utility model discloses an exhaust gas exhaust device for the texturing process of solar cell processing, and its beneficial effects are:

[0022] (1) The waste gas in the texturing tank is easy to adhere to the surface of the shell. The cleaning frame drives the brush to move up and down along the outer surface of the shell, so as to clean the outer surface of the shell. The shell surface can be cleaned regularly to ensure the cleanliness of the shell.

[0023] (2) When cleaning attached objects, the cleaning frame can move more smoothly and stably under the restriction of the guide rod and the slide groove, which can effectively improve the cleanliness of the shell surface after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 The accompanying drawing is a structural schematic diagram of the exhaust gas extraction structure provided by the utility model in a non-working state;

[0026] Figure 2 The accompanying drawing is a structural schematic diagram of the exhaust gas extraction structure provided by the utility model in working state;

[0027] Figure 3 The accompanying drawing is a schematic diagram of the structure of the cleaning assembly provided by the utility model;

[0028] Figure 4 The accompanying drawing is a top view of the cleaning frame provided by the utility model.

[0029] Among them, in the figure,

[0030] 1- housing;

[0031] 11-air inlet; 12-chute;

[0032] 2- Cleaning components;

[0033] 21-cleaning frame; 22-guide rod; 23-brush; 24-pulley;

[0034] 3-connecting plate; 4-buffer pad;

[0035] 5-Move the rod;

[0036] 51-limiting hole;

[0037] 6-limiting rod; 7-collecting tank. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] The utility model discloses an exhaust gas extraction device for a solar cell texturing process, comprising:

[0040] The shell 1 has a plurality of air inlets 11 on its surface; a suction port is provided inside the shell 1, and the suction port is connected to an air pump through a pipeline; and an air outlet of the air pump is connected to a filter;

[0041] The cleaning component 2 is arranged outside the housing 1 and moves up and down along the housing 1 under the action of the driving member. The driving member here can be driven by a motor or manually. The waste gas above the liquid in the texturing tank enters the housing 1 through the air inlet 11 under the action of the vacuum pump, and is then transported to the filter through the pipeline and discharged into the air after being filtered.

[0042] In order to further optimize the above technical solution, the air inlet 11 is an elongated opening and is arranged vertically along the outer surface of the shell 1 .

[0043] In order to further optimize the above technical solution, the cleaning component 2 includes: a cleaning frame 21 and a guide rod 22; the guide rod 22 is arranged on both sides of the shell 1, the cleaning frame 21 is arranged along the outer wall of the shell 1, and the two ends of the cleaning frame 21 are slidably connected with the guide rod 22; a brush 23 is provided on the side of the cleaning frame 21 close to the shell 1, and the brush 23 is in contact with the surface of the shell 1.

[0044] In order to further optimize the above technical solution, the shape of the cleaning frame 21 is the same as the external shape of the cleaning surface of the shell 1.

[0045] In order to further optimize the above technical solution, the top and bottom of the guide rod 22 are both connected with a connecting plate 3 , and the other end of the connecting plate 3 is connected to the housing 1 .

[0046] In order to further optimize the above technical solution, a buffer pad 4 is provided on one side where the connecting plate 3 is connected to the guide rod 22, and the buffer pad 4 is sleeved on the outside of the guide rod 22. The buffer pad 4 is a silicone pad, which can play a shock-absorbing and buffering role for the collision between the cleaning frame 21 and the connecting plate 3 when the cleaning frame 21 moves up and down.

[0047] In order to further optimize the above technical solution, the outer surface of the housing 1 is provided with a slide groove 12 along its length direction, and the cleaning frame 21 is provided with a pulley 24 at a position corresponding to the slide groove 12. The pulley 24 is placed in the slide groove 12 and moves along the slide groove 12. Two slide grooves 12 are arranged side by side.

[0048] In order to further optimize the above technical solution, a moving rod 5 is provided on the top of the cleaning frame 21, and the moving rod 5 drives the cleaning frame 21 to move up and down. A climbing ladder is provided outside the texturing tank, and the staff can climb the ladder to the top of the texturing tank and clean the housing 1 by moving the moving rod 5.

[0049] In order to further optimize the above technical solution, the surface of the moving rod 5 has a limiting hole 51, and the limiting rod 6 is inserted into the limiting hole 51; the top of the housing 1 is the top plate of the texturing groove; the top of the moving rod 5 passes through the top plate of the texturing groove and is placed above the top plate of the texturing groove; the limiting rod 6 is placed on the top plate of the texturing groove. The limiting rod 6 is L-shaped, and when the limiting rod 6 is inserted into the limiting hole 51, the position of the limiting rod 6 can be limited; after the limiting rod 6 is pulled out of the limiting hole 51, the moving rod 5 can move up and down.

[0050] In order to further optimize the above technical solution, a collecting tank 7 is provided at the bottom of the housing 1 .

[0051] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An exhaust gas extraction device for the texturing process of solar cell processing, characterized in that: include: A shell (1), wherein a plurality of air inlets (11) are provided on the surface of the shell (1); a suction port is provided inside the shell (1), and the suction port is connected to an air pump via a pipeline; and an air outlet of the air pump is connected to a filter; A cleaning component (2), the cleaning component (2) being arranged outside the shell (1) and being moved up and down along the shell (1) under the action of a driving member; the cleaning component (2) comprising: a cleaning frame (21) and a guide rod (22); the guide rod (22) being arranged on both sides of the shell (1), the cleaning frame (21) being arranged along the outer wall of the shell (1), and both ends of the cleaning frame (21) being slidably connected to the guide rod (22); a brush (23) being arranged on a side of the cleaning frame (21) close to the shell (1), and the brush (23) being in contact with the surface of the shell (1).

2. The exhaust gas exhaust device for the solar cell texturing process according to claim 1 is characterized in that: The air inlet (11) is an elongated opening and is arranged vertically along the outer surface of the shell (1).

3. The exhaust gas exhaust device for the solar cell texturing process according to claim 1 is characterized in that: The shape of the cleaning frame (21) is the same as the external shape of the cleaning surface of the shell (1).

4. The exhaust gas extraction device for the solar cell texturing process according to claim 3 is characterized in that: The top and bottom of the guide rod (22) are both connected to a connecting plate (3), and the other end of the connecting plate (3) is connected to the housing (1).

5. The exhaust gas extraction device for the solar cell texturing process according to claim 4 is characterized in that: A buffer pad (4) is provided on one side of the connecting plate (3) connected to the guide rod (22), and the buffer pad (4) is sleeved on the outside of the guide rod (22).

6. The exhaust gas extraction device for the solar cell texturing process according to claim 1 is characterized in that: The outer surface of the housing (1) is provided with a slide groove (12) along its length direction, and the cleaning frame (21) is provided with a pulley (24) at a position corresponding to the slide groove (12); the pulley (24) is placed in the slide groove (12) and moves along the slide groove (12).

7. The exhaust gas extraction device for the solar cell texturing process according to claim 6, characterized in that: A moving rod (5) is provided on the top of the cleaning frame (21), and the moving rod (5) drives the cleaning frame (21) to move up and down.

8. The exhaust gas extraction device for the solar cell texturing process according to claim 7, characterized in that: The movable rod (5) has a surface limiting hole (51), and a limiting rod (6) is inserted into the limiting hole (51); the top of the shell (1) is the top plate of the texturing groove; the top of the movable rod (5) passes through the top plate of the texturing groove and is placed above the top plate of the texturing groove; the limiting rod (6) is placed on the top of the top plate of the texturing groove.

9. The exhaust gas extraction device for the solar cell texturing process according to claim 1, characterized in that: A collecting tank (7) is provided at the bottom of the housing (1).

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