Dosing structure for texturing
By designing a symmetrical stirring fan blade and stirring rod structure inside the tank, the problem of uneven stirring of the texturing solution was solved, achieving rapid and uniform stirring, which improved the fabrication efficiency of solar cells and reduced energy consumption.
Patent Information
- Application Number
- CN202423197548.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing dosing devices are unable to quickly achieve uniform mixing of the texturing solution, which affects the fabrication efficiency of solar cells and increases energy consumption.
A dosing structure including a tank, a stirring assembly, and a drive assembly was designed. By utilizing symmetrically arranged first and second stirring blades, as well as stirring rods and spiral blades, rapid and uniform mixing is achieved through the upward and downward flow collision and shear force of the chemicals.
Rapid stirring of the texturing solution was achieved, reducing stirring time and energy consumption, and ensuring the fabrication efficiency and solution uniformity of solar cells.
Smart Images
Figure CN223723290U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of making equipment, and specifically relates to a dosing structure for making. BACKGROUND
[0002] The main purpose of a solar cell wafer texturing process is to form a textured surface on a silicon wafer to reduce the reflectivity of the wafer and increase the absorption of light, thereby improving the photoelectric conversion efficiency. In the texturing process, the silicon wafer is first placed in a texturing tank, and a texturing solution is used to etch the solar cell wafer to form a textured structure on the surface of the solar cell.
[0003] The commonly used chemicals in the texturing solution include sodium hydroxide, isopropyl alcohol, hydrofluoric acid, hydrochloric acid, ethanol, and hydrogen peroxide. The texturing solution needs to be mixed uniformly before entering the texturing tank to reduce the uneven etching of the solar cell wafer surface caused by uneven solution. However, the existing dosing device cannot quickly achieve uniform stirring of the texturing solution, directly affecting the preparation efficiency of the solar cell wafer and increasing the energy consumption of the dosing device.
[0004] The information disclosed in this background section is intended only to increase an understanding of the general background of the present utility model and should not be construed as an acknowledgment or any form of suggestion that this information constitutes prior art with respect to the present utility model. SUMMARY
[0005] The purpose of the present utility model is to provide a dosing structure for making, which can solve the technical problems raised in the background.
[0006] To achieve the above purpose, the technical scheme provided by one specific embodiment of the present utility model is as follows:
[0007] A dosing structure for making, comprising a tank body and a stirring assembly, the tank body is detachably installed with a tank cover, the stirring assembly is rotationally connected to the tank cover, the stirring assembly comprises a connecting shaft, the connecting shaft is fixedly connected with a first stirring vane and a second stirring vane, the flow direction of the drug driven by the first stirring vane is opposite to that of the second stirring vane.
[0008] In one or more embodiments of the present utility model, the connecting shaft is fixedly connected with a stirring rod, and the stirring rod is located between the first stirring vane and the second stirring vane.
[0009] In one or more embodiments of the present utility model, the inner wall of the tank body is fixedly connected with a baffle matched with the stirring rod.
[0010] In one or more embodiments of the utility model, the bottom of jar body is fixedly connected with sleeve, the lower end surface of sleeve is fixedly connected with the inner wall of jar body, a plurality of through holes are formed in the sleeve, and the connecting shaft is fixedly connected with the spiral piece matched with the sleeve.
[0011] In one or more embodiments of the utility model, the lower end of jar body is conical.
[0012] In one or more embodiments of the utility model, the lower end of jar body is fixedly connected with discharge pipe, and the valve is installed on the discharge pipe.
[0013] In one or more embodiments of the utility model, the driving assembly matched with the stirring assembly is installed on the jar body.
[0014] In one or more embodiments of the utility model, the outer wall of jar body is fixedly connected with support.
[0015] In one or more embodiments of the utility model, the dosing opening is fixedly connected on the jar cover.
[0016] In one or more embodiments of the utility model, the sealing cover is detachably installed on the dosing opening.
[0017] Compared with the prior art, the dosing structure for texturing can realize rapid stirring of texturing solution, avoid the influence of long stirring time of texturing solution on the preparation efficiency of solar cell sheet as far as possible, reduce the stirring time of dosing device to a certain extent, and reduce the energy consumption of dosing device to a certain extent. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments in the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.
[0019] Figure 1 It is a structure schematic view of the dosing structure for texturing in an embodiment of the utility model;
[0020] Figure 2 It is a partial sectional view of the dosing structure for texturing in an embodiment of the utility model Figure 1 ;
[0021] Figure 3 It is a partial sectional view of the dosing structure for texturing in an embodiment of the utility model Figure 2 ;
[0022] Figure 4 For Figure 3 Structure diagram of the embodiment of the present application.
[0023] Explanation of main reference signs:
[0024] 1, tank body; 2, tank cover; 201, dosing port; 3, sealing cover; 4, support; 5, stirring assembly; 6, connecting shaft; 7, first stirring vane; 8, second stirring vane; 9, stirring rod; 10, baffle; 11, sleeve; 1101, through hole; 12, spiral vane; 13, discharge pipe; 14, valve; 15, driving assembly. DETAILED DESCRIPTION
[0025] In order to make the personnel in the technical field better understand the technical scheme in the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without making creative efforts shall belong to the scope of protection of the present application.
[0026] As Figure 1 shown, the dosing structure for wafering in an embodiment of the present application comprises a tank body 1, and a support 4 is fixedly connected to the outside of the tank body 1. A tank cover 2 is installed on the tank body 1 through clamping, threaded connection or other detachable installation modes.
[0027] The tank cover 2 is fixedly connected with a dosing port 201, through which chemicals can be added into the tank body 1. The tank cover 2 is threaded connected with a sealing cover 3, which can completely block the tank cover 2 to avoid impurities entering into the tank body 1 from the dosing port 201.
[0028] As Figures 1-2 shown, the tank cover 2 is rotatably connected with a stirring assembly 5, through which the stirring of chemicals in the tank body 1 can be realized. The lower end of the tank body 1 is fixedly connected with a discharge pipe 13, and a valve 14 is installed on the discharge pipe 13. After the stirring assembly 5 completes the stirring of chemicals in the tank body 1, the valve 14 is opened, and the stirred chemicals are transported through the discharge pipe 13 to realize the dosing for wafering.
[0029] As Figures 2-3As shown, the stirring assembly 5 comprises a connecting shaft 6, one end of the connecting shaft 6 is rotatably connected with the tank cover 2, the first stirring vane 7 and the second stirring vane 8 are fixedly connected on the connecting shaft 6, and the first stirring vane 7 and the second stirring vane 8 are symmetrically arranged. The first stirring vane 7 makes the chemicals in the tank body 1 flow downward, and the second stirring vane 8 makes the chemicals in the tank body 1 flow upward, the chemicals flowing downward and the chemicals flowing upward collide, so that the newly added chemicals and the previous chemicals can be fully contacted, and the collision force generated by the two further makes the chemicals uniformly stirred.
[0030] As shown in the figure, Figures 2-3 The connecting shaft 6 is further fixedly connected with a stirring rod 9, the stirring rod 9 is generally located between the first stirring vane 7 and the second stirring vane 8, and is located at the middle part between the first stirring vane 7 and the second stirring vane 8. That is, when the chemicals flowing downward and the chemicals flowing upward collide, the stirring rod 9 generates a shearing force on the chemicals flowing downward and the chemicals flowing upward, that is, it can make the upper half of the chemicals and the lower half of the chemicals mix at the stirring rod 9, further improving the efficiency of uniform stirring of the chemicals.
[0031] As shown in the figure, Figures 2-3 A plurality of baffles 10 are fixedly connected on the inner wall of the connecting shaft 6. In the process of stirring and mixing, the stirring rod 9 will generate a certain centrifugal force, and the centrifugal force will make the chemicals move away from one end of the stirring rod 9. The baffles 10 can block the chemicals, and the chemicals impacting the baffles 10 will generate a reverse force, and the reverse chemicals will collide with the forward chemicals driven by the stirring rod 9, so that the chemicals are mixed more uniformly, which is beneficial to the texturing and dosing.
[0032] As shown in the figure, Figures 2-4 In this embodiment, the bottom of the tank body 1 is conical, and it is not convenient to drive the chemicals at the bottom of the tank body 1 upward by the second stirring vane 8 alone. Therefore, a sleeve 11 is arranged on the inner bottom wall of the tank body 1, and a helical blade 12 matched with the sleeve 11 is fixedly connected on the connecting shaft 6. The helical blade 12 cooperates with the sleeve 11 to make the chemicals at the bottom of the second stirring vane 8 flow upward, and the chemicals flowing upward through the helical blade 12 pass through the second stirring vane 8, and the second stirring vane 8 continues to make the chemicals flow upward. The second stirring vane 8 can continue the upward flow speed of the chemicals at the bottom of the tank body 1, which is beneficial to the uniform mixing of the chemicals at the bottom of the tank body 1.
[0033] Among them, a plurality of through holes 1101 are formed in the sleeve 11.
[0034] As shown in the figure, Figures 1-2As shown, the driving assembly 15 for driving the stirring assembly 5 to rotate is mounted on the tank body 1 or the tank cover 2. Specifically, the driving assembly 15 can be a motor fixedly connected to the tank cover 2, and the output shaft of the driving assembly 15 is connected to the connecting shaft 6, so that the connecting shaft 6 is driven to rotate by the motor. In addition, the motor can also be mounted on the outer wall of the tank body 1, and the connecting shaft 6 and the output shaft of the motor are driven by a belt.
[0035] In use, first, the sealing cover 3 is opened, and the chemicals for texturing are added into the tank body 1 through the charging port 201. After the chemicals are added, the driving assembly 15 is started, and the connecting shaft 6 is driven to rotate by the driving assembly 15. The first stirring vane 7, the second stirring vane 8, the stirring rod 9 and the spiral blade 12 are driven to rotate by the connecting shaft 6. The first stirring vane 7, the second stirring vane 8, the stirring rod 9 and the spiral blade 12 cooperate to complete the stirring of the chemicals. The first stirring vane 7 and the second stirring vane 8 can make the chemicals located at the upper part of the tank body 1 and the lower part of the tank body 1 flow in opposite directions, so that the chemicals collide in the tank body 1. Then, the chemicals that have collided or are about to collide are stirred by the stirring rod 9. In the stirring process, the chemicals collide with the baffle 10, which is beneficial to the mixing of the chemicals. After the chemicals are mixed, the valve 14 is opened, and the chemicals are added into the texturing groove through the discharge pipe 13.
[0036] The utility model discloses can quickly complete the stirring of texturing solution, and can make texturing solution stir evenly, reduce the preparation time of texturing solution, can make to prepare, avoid the situation that texturing solution preparation is too much and causes waste, and it is not easy to cause the preparation of texturing solution to be waited for because texturing solution is too little, and then the preparation efficiency of solar cell piece is influenced, reduce the time that the dosing device needs to stir texturing solution to a certain extent, and reduce energy consumption.
[0037] It will be apparent to those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the utility model. Thus, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the utility model being defined by the appended claims rather than the above description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.
[0038] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.
Claims
1. A structure for adding a medicine for texturing, characterized by comprising: The utility model relates to a medicine mixing device, which comprises: a tank body, a tank cover detachably mounted on the tank body; a stirring assembly rotatably connected to the tank cover, the stirring assembly comprising a connecting shaft, a first stirring vane and a second stirring vane fixedly connected to the connecting shaft; the first stirring vane drives the flow direction of the medicine opposite to the flow direction of the medicine driven by the second stirring vane.
2. The impregnation structure for texturing according to claim 1, wherein a stirring rod fixedly connected to the connecting shaft, the stirring rod being located between the first stirring vane and the second stirring vane.
3. The impregnation structure for texturing according to claim 2, wherein a baffle fixedly connected to the inner wall of the tank body and matched with the stirring rod.
4. The impregnation structure for texturing according to claim 1, wherein a sleeve fixedly connected to the bottom of the tank body, the lower end surface of the sleeve being fixedly connected to the inner wall of the tank body, a plurality of through holes being formed in the sleeve, and a helical blade fixedly connected to the connecting shaft and matched with the sleeve.
5. The impregnation structure for texturing according to claim 4, wherein the lower end of the tank body is conical.
6. The impregnation structure for texturing according to claim 4 or 5, wherein a discharge pipe fixedly connected to the lower end of the tank body, a valve mounted on the discharge pipe.
7. The impregnation structure for texturing according to claim 1, wherein a driving assembly matched with the stirring assembly mounted on the tank body.
8. The doping structure for texturing according to claim 1, wherein a support fixedly connected to the outer wall of the tank body.
9. The impregnation structure for texturing according to claim 1, wherein a medicine adding port fixedly connected to the tank cover.
10. The impregnation structure for texturing according to claim 9, wherein a sealing cover detachably mounted on the medicine adding port.