CN217369522U - Silicon ingot pickling device for polycrystalline silicon purification treatment - Google Patents

Abstract

The utility model discloses a silicon ingot pickling device for purifying polysilicon, which comprises a bottom plate, a supporting block, a stirring mechanism, a sealing plate and a blanking mechanism, wherein the left upper end of the bottom plate is fixedly connected with a cleaning box; the supporting blocks are embedded and connected to the inner wall of the middle lower end of the cleaning box in an equal angle mode, and a cleaning frame is connected to the inside of the cleaning box in an embedded mode; the stirring mechanism is arranged on the upper side of the cleaning box and comprises a connecting plate, a connecting shaft, a stirring rod, a stirring blade and a first motor; the sealing plate is fixedly connected to the right wall of the cleaning frame, and the cross section of the sealing plate is of an arc-shaped structure; the unloading mechanism sets up on the right side of wasing the case, and unloading mechanism includes connecting piece, threaded rod, second motor and guide bar. This silicon ingot pickling device is used in polycrystalline silicon purification processing is convenient for unload the polycrystalline silicon that the pickling is good, and easy abundant the acidizing fluid that lets carries out the pickling to the polycrystalline silicon moreover, conveniently carries out the waterlogging caused by excessive rainfall to the polycrystalline silicon in the washing frame simultaneously.

Description

A kind of silicon ingot pickling device for polycrystalline silicon purification treatment

technical field

The utility model relates to the technical field related to the purification and treatment of polycrystalline silicon, in particular to a silicon ingot pickling device for the purification and treatment of polycrystalline silicon.

Background technique

Silicon wafers are an important raw material in the manufacture of electronic products. Silicon wafers are made of silicon ingots, and silicon ingots are cast from polysilicon. In order to improve the quality of silicon wafers, polysilicon needs to be cleaned to improve the purity. The cleaning solution is an acid solution. This process is done by pickling unit.

However, the common silicon ingot pickling device used for the purification of polysilicon is inconvenient for unloading the pickled polysilicon, and it is not easy to sufficiently pickle the polysilicon with the acid solution, and at the same time, it is inconvenient to clean the polysilicon in the cleaning frame. Therefore, we propose a silicon ingot pickling device for polycrystalline silicon purification treatment, so as to solve the problems raised above.

Utility model content

The purpose of this utility model is to provide a silicon ingot pickling device for polycrystalline silicon purification treatment, in order to solve most of the polycrystalline silicon purification treatment silicon ingot pickling devices proposed in the above-mentioned background technology, it is inconvenient to unload the pickled polycrystalline silicon , and it is not easy to sufficiently allow the acid solution to pickle the polysilicon, and at the same time, it is inconvenient to drain the polysilicon in the cleaning frame.

In order to achieve the above purpose, the utility model provides the following technical solutions: a silicon ingot pickling device for polysilicon purification treatment, comprising a bottom plate directly placed on the ground, and a cleaning box is fixedly connected to the upper left end of the bottom plate, and the rear of the cleaning box is The end bolts are connected with hydraulic telescopic rods;

Also includes:

a support block, the support block is inlaid and connected to the inner walls of the middle and lower ends of the cleaning box at an equal angle, and a cleaning frame is nested and connected inside the cleaning box, and the bottom end of the cleaning frame is in a porous structure;

a stirring mechanism, the stirring mechanism is arranged on the upper side of the cleaning box, and the stirring mechanism includes a connecting plate, a connecting shaft, a stirring rod, a stirring blade and a first motor, wherein the rear end of the connecting plate is installed on the output end of the hydraulic telescopic rod;

a sealing plate, the sealing plate is fixedly connected to the right wall of the cleaning frame, and the cross section of the sealing plate is in an arc structure, and the center position of the right end of the sealing plate is integrally connected with a rotating shaft;

The blanking mechanism is arranged on the right side of the cleaning box, and the blanking mechanism includes a connecting piece, a threaded rod, a second motor and a guide rod, and the rotating shaft is rotatably connected to the left end of the connecting piece.

Preferably, a connecting shaft is rotatably connected to the front end of the connecting plate, a first motor is installed on the top end of the connecting shaft, and a stirring rod is fixedly connected to the bottom end of the connecting shaft at an equal angle, wherein the upper and lower ends of the stirring rod are Mixing blades are integrally connected at equal intervals.

Preferably, the diameter of the rotation track of the stirring rod is smaller than the diameter of the inner end of the cleaning frame, and the stirring rod forms a lifting structure with the cleaning box through the connecting plate, and a third motor is installed on the right end of the rotating shaft provided on the right side of the cleaning frame;

The cleaning frame has a rotating structure on the left side of the connector through the sealing plate and the rotating shaft, and a threaded rod is threadedly connected to the center of the upper end of the connector, and the left end of the threaded rod is rotatably connected to the upper right end of the cleaning box.

Preferably, a second motor is installed on the right end of the threaded rod, and the guide rod is symmetrically arranged in front and rear with respect to the transverse center axis of the threaded rod, and the left end of the guide rod is inlaid and connected to the upper right end of the cleaning box;

The right end of the guide rod is inlaid and connected to the upper end of the mounting plate, and the mounting plate is fixedly connected to the upper right end of the bottom plate, and the cleaning frame slides left and right on the threaded rod through the connecting piece and the guide rod.

Compared with the prior art, the beneficial effect of the utility model is: the silicon ingot pickling device used for the purification of polysilicon is convenient for unloading the pickled polysilicon, and it is easy to sufficiently allow the acid solution to pickle the polysilicon, At the same time, it is convenient to drain the polysilicon in the cleaning frame;

1. There is a feeding mechanism, the structural design of the cleaning frame and the threaded rod, so that when the threaded rod rotates, the guide rod drives the connecting piece to slide to the right end until the cleaning frame moves out of the cleaning box. The structural design of the cleaning frame and the connecting piece, When the rotating shaft rotates, the cleaning frame is turned over, so as to facilitate the unloading of the pickled polysilicon;

2. There is a stirring mechanism, and the structure design of the stirring rod and the cleaning box makes the hydraulic telescopic rod drive the stirring rod to descend into the interior of the cleaning frame. When the stirring blade rotates, the inside of the cleaning frame is stirred, so that it is easy to fully let the acid solution pickle the polysilicon;

3. There is a support block and a cleaning frame. The support block is inlaid and connected to the inner wall of the middle and lower ends of the cleaning box at an equal angle. When the liquid is drained, let the excess liquid inside the cleaning frame drain through the porous structure at the bottom for draining.

Description of drawings

Fig. 1 is the front view sectional structure schematic diagram of the utility model;

Figure 2 is a schematic cross-sectional view of the right side view of the connection between the support block and the cleaning frame of the present invention;

Fig. 3 is a top-view cross-sectional structural schematic diagram of the connection between the guide rod and the connecting piece of the present invention;

FIG. 4 is a top-view cross-sectional structural schematic diagram of the connection between the sealing plate and the cleaning frame of the present invention.

In the figure: 1, the bottom plate; 2, the cleaning box; 3, the support block; 4, the cleaning frame; 5, the stirring mechanism; 501, the connecting plate; 502, the connecting shaft; 503, the stirring rod; 504, the stirring blade; 1. Motor; 6. Hydraulic telescopic rod; 7. Sealing plate; 8. Rotating shaft; 9. Feeding mechanism; 901, connecting piece; 902, threaded rod; 903, second motor; 904, guide rod; 10, third motor ; 11. Mounting plate.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. For example, based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

1-4, the present utility model provides a technical solution: a silicon ingot pickling device for polysilicon purification treatment, comprising a bottom plate 1, a cleaning box 2, a support block 3, a cleaning frame 4, a stirring mechanism 5, a hydraulic expansion and contraction The rod 6, the sealing plate 7, the rotating shaft 8, the unloading mechanism 9, the third motor 10 and the mounting plate 11, when using the silicon ingot pickling device for polysilicon purification treatment, in conjunction with Fig. 1, Fig. 2 and Fig. 4, by connecting The structure composed of the plate 501, the connecting shaft 502, the stirring rod 503, the stirring blade 504 and the first motor 505 stirs the polysilicon and the acid solution. Since the diameter of the rotation track of the stirring rod 503 is smaller than the diameter of the inner end of the cleaning frame 4, the stirring rod 503 The connecting plate 501 and the cleaning box 2 constitute a lifting structure. Therefore, when the cleaning box 4 is located at the upper end of the support block 3, the sealing plate 7 with an arc-shaped cross-section is snapped and connected to the right wall of the cleaning box 2, so as to prevent the cleaning process. The right wall of the box 2 is sealed;

After the polysilicon and the acid solution are added to the interior of the cleaning frame 4 through the upper end of the cleaning box 2, the hydraulic telescopic rod 6 drives the connecting plate 501 to descend during operation until the stirring rod 503 completely enters the interior of the cleaning frame 4. When the first motor 505 is working, The connecting shaft 502 is driven to rotate at the front end of the connecting plate 501. When the connecting shaft 502 rotates, it drives the stirring rod 503 arranged at equal angles to rotate. When the stirring rod 503 rotates, it drives the stirring blades 504 arranged at equal intervals to rotate, so that the stirring rod 503 and the stirring rod 503 are rotated. The leaves 504 stir the polysilicon inside the cleaning frame 4, so that the acid solution and the polycrystalline silicon are fully contacted, so that the acid solution can easily and fully pickle the polycrystalline silicon;

1 and 2, after the pickling is completed, the hydraulic telescopic rod 6 is used to drive the connecting plate 501 to rise until the lower end of the stirring rod 503 is far away from the interior of the cleaning frame 4. Since the support block 3 is equiangularly inlaid and connected to the cleaning box 2 The bottom end of the cleaning box 4 has a porous structure, so the bottom end of the cleaning box 4 is in a suspended state through the support blocks 3 arranged at equal angles, and the bottom end of the cleaning box 2 is fixedly connected with a drain pipe. When the control valve on the drain pipe is opened, the liquid in the cleaning box 2 is discharged, and the excess liquid inside the cleaning frame 4 is discharged through the support block 3 and the porous structure at the bottom of the cleaning frame 4, so as to facilitate the cleaning of the polysilicon in the cleaning frame 4. to drain;

1, 3 and 4, the polysilicon in the cleaning frame 4 is unloaded through the structure composed of the connector 901, the threaded rod 902, the second motor 903 and the guide rod 904, because the cleaning frame 4 passes through the sealing plate 7 and The rotating shaft 8 is in a rotating structure on the left side of the connecting piece 901, and the guide rod 904 is symmetrically arranged about the transverse center axis of the threaded rod 902. The cleaning frame 4 slides left and right on the threaded rod 902 through the connecting piece 901 and the guide rod 904, so When the second motor 903 works, the threaded rod 902 is driven to rotate;

The connecting piece 901 moves to the right end on the threaded rod 902 through the guide rod 904 symmetrically arranged in the front and rear until the cleaning frame 4 is completely moved out of the interior of the cleaning box 2. When the third motor 10 works, the rotating shaft 8 is driven to rotate on the connecting piece 901, and the rotating shaft 8 During rotation, the sealing plate 7 is driven to rotate, and the cleaning frame 4 is turned over to pour out the acid-washed polysilicon, so as to facilitate the unloading of the acid-washed polysilicon. This is the work of the silicon ingot pickling device for polysilicon purification. principle.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description in the specification and the drawings, and the specific connection method of each part adopts the mature bolts, rivets and welding in the prior art. and other conventional means, the machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here, and the content that is not described in detail in this specification. It belongs to the prior art known to those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Within the spirit and principle of the present utility model, any modifications, equivalent replacements, improvements, etc. made shall be included within the protection scope of the present utility model.

Claims (4)

1. A silicon ingot pickling device for polysilicon purification treatment, comprising a bottom plate (1) placed directly on the ground, and a cleaning box (2) is fixedly connected to the upper left end of the bottom plate (1), and the cleaning box (2) is The rear end bolt is connected with a hydraulic telescopic rod (6); It is characterized in that it also includes: A support block (3), the support block (3) is inlaid and connected to the inner wall of the middle and lower ends of the cleaning box (2) at an equal angle, and a cleaning frame (4) is nested inside the cleaning box (2), and the cleaning The bottom end of the frame (4) has a porous structure; A stirring mechanism (5), the stirring mechanism (5) is arranged on the upper side of the cleaning box (2), and the stirring mechanism (5) comprises a connecting plate (501), a connecting shaft (502), a stirring rod (503), a stirring rod (503), and a stirring mechanism (501). The blade (504) and the first motor (505), wherein the rear end of the connecting plate (501) is mounted on the output end of the hydraulic telescopic rod (6); A sealing plate (7), the sealing plate (7) is fixedly connected to the right wall of the cleaning frame (4), and the cross-section of the sealing plate (7) is an arc structure, and the center of the right end of the sealing plate (7) The position is integrally connected with a rotating shaft (8); A feeding mechanism (9), the feeding mechanism (9) is arranged on the right side of the cleaning box (2), and the feeding mechanism (9) includes a connecting piece (901), a threaded rod (902), a second motor ( 903) and the guide rod (904), while the rotating shaft (8) is rotatably connected to the left end of the connecting piece (901). 2 . The silicon ingot pickling device for purifying polysilicon according to claim 1 , wherein the front end of the connecting plate ( 501 ) is rotatably connected with a connecting shaft ( 502 ), and the connecting shaft ( 502 ) has a A first motor (505) is installed at the top end, and a stirring rod (503) is fixedly connected to the bottom end of the connecting shaft (502) at an equal angle, wherein the upper and lower ends of the stirring rod (503) are integrally connected at equal intervals There are stirring blades (504). 3. The silicon ingot pickling device for purifying polysilicon according to claim 2, wherein the diameter of the rotation track of the stirring rod (503) is smaller than the inner diameter of the cleaning frame (4), and the stirring rod (503) A lifting structure is formed by the connecting plate (501) and the cleaning box (2), and a third motor (10) is installed on the right end of the rotating shaft (8) provided on the right side of the cleaning frame (4); Wherein, the cleaning frame (4) is in a rotating structure on the left side of the connecting piece (901) through the sealing plate (7) and the rotating shaft (8), and a threaded rod (902) is threadedly connected to the central position of the upper end of the connecting piece (901). ), and the left end of the threaded rod (902) is rotatably connected to the upper right end of the cleaning box (2). 4. A silicon ingot pickling device for polysilicon purification treatment according to claim 3, characterized in that: a second motor (903) is installed on the right end of the threaded rod (902), and the guide rod (904) is about The transverse central axis of the threaded rod (902) is symmetrically arranged front and rear, and the left end of the guide rod (904) is inlaid and connected to the upper right end of the cleaning box (2); Wherein, the right end of the guide rod (904) is inlaid and connected to the upper end of the mounting plate (11), and the mounting plate (11) is fixedly connected to the upper right end of the bottom plate (1), while the cleaning frame (4) is connected through the connecting piece (901) ) and the guide rod (904) slide left and right on the threaded rod (902).

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