Circulating tank with built-in overflow pipe

Abstract

The utility model belongs to the technical field of silicon wafer texturing, and particularly relates to a circulating tank with a built-in overflow pipe, which comprises a box body provided with a preparation tank; the overflow pipe is vertically arranged in the preparation tank, an overflow opening is formed in the top end of the overflow pipe, a gap is formed between the top end of the overflow pipe and the inner wall of the top end of the box body, and the bottom end of the overflow pipe penetrates through the bottom end of the box body; a limiting part is arranged on the outer wall of the bottom end of the overflow pipe, the diameter of the limiting part is larger than that of the overflow pipe, and the limiting part is arranged on the outer side of the box body; the overflow pipe is arranged in the circulating tank, so that the overflow pipe is prevented from cracking easily, the mounting steps are simple and convenient, and the circulating efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of silicon wafer texturing, and particularly relates to a circulating tank with built-in overflow pipe. BACKGROUND

[0002] In the texturing process, the silicon wafer needs to be corroded in a specific concentration of alkali solution to form a pyramidal textured structure, which can increase the light absorption of the silicon wafer and improve the power generation efficiency of the photovoltaic cell; the circulating tank ensures that the silicon wafer can uniformly contact with the solution by continuously circulating the solution in the tank, thereby obtaining a good textured effect.

[0003] At present, the silicon wafer texturing is to weld a live joint and a overflow box on the tank body, and the liquid flows from the overflow box to the outside of the tank body through the live joint, and the live joint and the overflow box are usually welded on the outside of the tank body, which is easy to crack after long-term use; and there is installation interference between the live joint and the tank body when welding the live joint, and the overflow box welding process is complex, which leads to complex installation of the circulating tank and reduces the efficiency of the silicon wafer texturing. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a circulating tank with built-in overflow pipe to solve the technical problem that it is difficult to weld a live joint and an overflow box to achieve the overflow effect and the overflow pipe is easy to crack, and to achieve the purpose of built-in overflow pipe to avoid cracking of the overflow pipe, convenient installation of the overflow pipe and improvement of the efficiency of the silicon wafer texturing.

[0005] In order to solve the above technical problems, the utility model provides a circulating tank with built-in overflow pipe, which comprises:

[0006] A tank body is provided with a preparation tank;

[0007] An overflow pipe is vertically arranged in the preparation tank, a overflow port is formed in the top end of the overflow pipe, there is a gap between the top end of the overflow pipe and the inner wall of the top end of the tank body, and the bottom end of the overflow pipe penetrates the bottom end of the tank body; a limiting part is arranged on the outer wall of the bottom end of the overflow pipe, the diameter of the limiting part is larger than the diameter of the overflow pipe, and the limiting part is arranged on the outside of the tank body.

[0008] Further, a horizontal limiting ring is arranged in the tank body and is sleeved on the outer wall of the overflow pipe.

[0009] Further, a horizontal liquid inlet pipe is arranged at the bottom end of the tank body, one end of the liquid inlet pipe is communicated with the preparation tank, and the other end of the liquid inlet pipe penetrates the tank body and extends to the outside of the tank body.

[0010] Further, a top plate is detachably arranged at the top end of the tank body and is threadedly connected with the tank body by bolts.

[0011] Further, a vertical sleeve is arranged on the top plate, and a bottom end of the sleeve is communicated with the preparation tank.

[0012] Further, a horizontal fixing frame is arranged on an outer wall of a top end of the box body, and a driving assembly is arranged on a bottom end of the box body.

[0013] Further, a flower basket is further arranged in the preparation tank, and a silicon wafer is arranged on the flower basket.

[0014] The present application has the following beneficial effects:

[0015] 1. The overflow pipe is arranged on the limiting ring and is arranged in the preparation tank, so that the overflow pipe is prevented from being installed outside the box body and cracking, the limiting part limits the overflow pipe to prevent it from falling and protects the side wall of the overflow pipe from cracking, the solution in the preparation tank is discharged outside the box body through the overflow pipe when the solution in the preparation tank is too much, and the overflow pipe height needs to be increased, so that the overflow pipe is welded at the overflow port, the installation process is simple, and the efficiency of the wafer production is improved.

[0016] 2. The top plate is arranged, the top plate is connected with the box body through bolts, the installation and dismounting are convenient, the top plate is prevented from being welded on the box body to cause inconvenience to subsequent inspection and maintenance work, the liquid supplement pipe is arranged in the sleeve to protect the liquid supplement pipe, the liquid supplement pipe is accurately installed to improve the circulation efficiency and the efficiency of the wafer production.

[0017] In order to make the above-mentioned purposes, characteristics and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0019] Figure 1 is a structural schematic view of a circulating tank with an overflow pipe arranged inside according to the present application;

[0020] Figure 2 is Figure 1 a top view of the present application.

[0021] In the drawings:

[0022] 1, box body; 11, liquid inlet pipe; 2, preparation tank; 3, overflow pipe; 31, overflow port; 32, limiting part; 33, limiting ring; 4, top plate; 41, sleeve; 42, bolt; 5, fixing frame; 6, flower basket; 7, driving assembly. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. 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.

[0024] Example:

[0025] like Figures 1 to 2 As shown, a circulation tank with an overflow pipe inside includes: a box body 1 and an overflow pipe 3, wherein the box body 1 has a preparation tank 2.

[0026] like Figure 1 As shown, the overflow pipe 3 is vertically installed in the preparation tank 2. An overflow port 31 is provided at the top of the overflow pipe 3. There is a gap between the top of the overflow pipe 3 and the inner wall of the top of the tank 1. The bottom end of the overflow pipe 3 penetrates the bottom end of the tank 1. A limiting part 32 is provided on the outer wall of the bottom end of the overflow pipe 3. The diameter of the limiting part 32 is larger than the diameter of the overflow pipe 3. The limiting part 32 is located on the outside of the tank 1. The solution in the preparation tank 2 is discharged from the tank 1 through the overflow port 31. A horizontal limiting ring 33 is provided inside the tank 1. The limiting ring 33 is fitted onto the outer wall of the overflow pipe 3, securing the overflow pipe 3 inside the preparation tank 2 and preventing it from falling off.

[0027] In this embodiment, a horizontal liquid inlet pipe 11 is provided at the bottom of the box 1. One end of the liquid inlet pipe 11 is connected to the preparation tank 2, and the other end of the liquid inlet pipe 11 extends through the box 1 to the outside of the box 1. The solution is introduced into the preparation tank 2 through the liquid inlet pipe 11 to texturize the silicon wafer. A horizontal fixing frame 5 is provided on the top outer wall of the box 1. The fixing frame 5 provides support for the box 1 and improves the stability of the box 1. A driving component 7 is provided at the bottom of the box 1. The driving component is used to drive the texturizing equipment in the preparation tank 2. A basket 6 is also provided in the preparation tank 2. The silicon wafer is placed on the basket 6. The basket 6 immerses the silicon wafer in the solution for uniform contact to achieve a better texturizing effect. After texturizing is completed, the silicon wafer is taken out through the basket 6.

[0028] like Figure 2 As shown, the top of the box 1 is detachably equipped with a top plate 4. The top plate 4 is threadedly connected to the box 1 by bolts 42. The top plate 4 is easy to disassemble and install, and facilitates subsequent maintenance and inspection. A vertical sleeve 41 is provided on the top plate 4. The bottom end of the sleeve 41 is connected to the preparation tank 2. By installing a replenishing pipe in the sleeve 41, the solution in the preparation tank 2 is increased, which improves the installation accuracy of the replenishing pipe and thus improves the circulation efficiency.

[0029] In summary, the wafer with the basket 6 is placed in the preparation tank 2, a large amount of solution is introduced into the preparation tank 2 from the liquid inlet pipe 11 to start the etching of the silicon wafer, the silicon wafer is etched to consume the solution, a small amount of solution is supplemented through the solution supplement pipe installed in the sleeve 41 to meet the consumed solution so that the silicon wafer is always in a state of full contact, when the solution is too much, the liquid level rises to the overflow port 31, and the solution is overflowed from the overflow port 31 to the outside of the box 1, so that the solution in the preparation tank 2 is in a stable state.

[0030] Each device selected in the application is a general standard part or a part known to those skilled in the art, and its structure and principle can be known by those skilled in the art through a technical manual or through a conventional experimental method.

[0031] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0033] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A circulating tank with an overflow pipe built in, characterized by The utility model relates to a preparation tank with overflow pipe and drive assembly, which belongs to the technical field of preparation tank. The utility model discloses a preparation tank with overflow pipe and drive assembly, which comprises a box (1) provided with a preparation tank (2), an overflow pipe (3) vertically arranged in the preparation tank (2), a top end of the overflow pipe (3) provided with an overflow port (31), a gap between the top end of the overflow pipe (3) and the inner wall of the top end of the box (1), a bottom end of the overflow pipe (3) penetrating through the bottom end of the box (1), a limiting portion (32) arranged on the outer wall of the bottom end of the overflow pipe (3), the diameter of the limiting portion (32) being larger than the diameter of the overflow pipe (3), and the limiting portion (32) being arranged outside the box (1). A horizontal limiting ring (33) is arranged in the box (1) and sleeved on the outer wall of the overflow pipe (3).

2. A circulation tank built-in an overflow pipe according to claim 1, wherein A horizontal liquid inlet pipe (11) is arranged at the bottom end of the box (1), one end of the liquid inlet pipe (11) being communicated with the preparation tank (2), and the other end of the liquid inlet pipe (11) penetrating through the box (1) and extending to the outside of the box (1).

3. A circulation tank built-in an overflow pipe according to claim 1, wherein A top plate (4) is detachably arranged at the top end of the box (1), and the top plate (4) is threadedly connected with the box (1) by bolts (42).

4. A recirculation tank built-in an overflow pipe according to claim 1, wherein A vertical sleeve pipe (41) is arranged on the top plate (4), and the bottom end of the sleeve pipe (41) is communicated with the preparation tank (2).

5. A built-in circulation tank for an overflow pipe according to claim 4, characterized in that A horizontal fixing frame (5) is arranged on the outer wall of the top end of the box (1), and a drive assembly (7) is arranged at the bottom end of the box (1).

6. A recirculation tank built-in an overflow pipe according to claim 1, wherein A flower basket (6) is further arranged in the preparation tank (2), and a silicon wafer is placed on the flower basket (6).

7. A recirculation tank built-in an overflow pipe according to claim 1, wherein ​

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