Crucible for preparing large-size crystals through PVT method

Abstract

The utility model relates to the technical field of crystal preparation, and discloses a PVT method large-size crystal preparation crucible which comprises a crucible body, sliding grooves are formed in the two sides of the crucible body in a penetrating mode, the interiors of the sliding grooves are both connected with fixing mechanisms in a sliding mode, two rotating holes are formed in one side of the crucible body in a penetrating mode, and the two rotating holes are connected with the fixing mechanisms in a sliding mode. And the interiors of the two rotating holes are rotationally connected with rotating shafts. According to the crucible for preparing the large-size crystals through the PVT method, through the arrangement of a fixing mechanism, a pull ring is pulled, the pull ring drives a pull rod and a limiting block to move, then a chuck is driven to move, when the upper end of the chuck completely enters the side wall of the crucible body and the lower end of the chuck does not completely enter the side wall of the crucible body, a microporous filter plate is vertically put down, and the pull ring is loosened when the microporous filter plate abuts against the lower end of the chuck; the chuck and the limiting block extend out of the side wall of the crucible body under the spring-back acting force of the spring to fix the microporous filter plate, the microporous filter plate can be taken out by pulling the pull ring, the microporous filter plate is convenient to disassemble and clean, and gas circulation and crystal growth are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of crystal preparation, specifically to PVT method large -size crystal preparation crucible. BACKGROUND

[0002] PVT method (physical gas phase transmission method) is an important method for preparing large -size crystal materials. In this process, the crucible plays a key role. The crucible is usually made of high-temperature-resistant, chemically stable materials such as graphite.

[0003] Impurities and particles generated in the process of crystal growth need to be filtered by using a microporous filter plate. The microporous filter plate is generally fixedly connected inside the crucible, which is inconvenient to disassemble and clean. Long-term use can easily be blocked by impurities, resulting in a decline in filtering effect, affecting the circulation of gas and the growth of crystals. In addition, the gas flow in the crucible cannot be controlled in the predetermined direction, thereby affecting the transmission efficiency and uniformity of the gas.

[0004] Therefore, there is an urgent need for PVT method large -size crystal preparation crucible to solve the above problems. UTILITY MODEL CONTENTS

[0005] (I) Technical problems solved

[0006] In view of the above shortcomings of the prior art, the utility model provides a PVT method large -size crystal preparation crucible, which can effectively solve the problems of the prior art microporous filter plate, such as inconvenient disassembly and cleaning, and inability to control the gas flow in the predetermined direction, thereby affecting the transmission efficiency and uniformity of the gas.

[0007] (II) Technical scheme

[0008] In order to achieve the above purpose, the utility model is realized by the following technical scheme: a PVT method large -size crystal preparation crucible, comprising a crucible body, two sides of the crucible body are provided with a sliding groove, the inside of the sliding groove is slidably connected with a fixing mechanism, one side of the crucible body is provided with two rotating holes, the inside of the two rotating holes is rotatably connected with a rotating shaft, the outside of the rotating shaft is fixedly connected with a guide plate, one end of the rotating shaft is fixedly connected with a rotating disc, the surface of the rotating disc is provided with a plurality of limiting holes, and the outer wall of the crucible body is fixedly connected with a group of limiting mechanisms.

[0009] As a further scheme of the utility model, the fixing mechanism comprises a chuck slidably connected in the sliding groove, one end of the chuck is fixedly connected with a limiting block, the outside of the limiting block is slidably connected with a limiting box, a group of springs are fixedly connected between the one side of the limiting block and the inner wall of the limiting box, the one side of the limiting block is fixedly connected with a pull rod, the one side of the pull rod is fixedly connected with a pull ring, and the pull ring is convenient for moving the pull rod.

[0010] As a further scheme of the utility model, the limiting mechanism includes a support fixedly connected to the outer lateral wall of the crucible body, a threaded hole is formed through the middle of the support, a bolt is threadedly connected to the inside of the threaded hole, one end of the bolt is fixedly connected to a limiting column, and the other end of the bolt is fixedly connected to a handle, and the handle facilitates rotating the bolt.

[0011] As a further scheme of the utility model, the collet clamps the microporous filter plate, and the upper end of the collet is shorter than the lower end, so that the upper end facilitates allowing the microporous filter plate to pass when the collet moves, and the lower end facilitates limiting.

[0012] As a further scheme of the utility model, the diameter of the limiting column is greater than the diameter of the bolt, so that the bolt cannot fall off.

[0013] As a further scheme of the utility model, the top of the crucible body is rotationally connected to a crucible cover, and a handle is fixedly connected to the surface of the crucible cover, and the handle facilitates opening the crucible cover.

[0014] (Three) beneficial effects

[0015] The utility model provides PVT method large size crystal preparation crucible has the following beneficial effects:

[0016] 1. The PVT method large size crystal preparation crucible, through the setting of the fixed mechanism, pull the pull ring, the pull ring drives the pull rod and the limiting block to move, and then drive the collet to move, until the upper end of the collet is completely in the lateral wall of the crucible body and the lower end does not completely enter the lateral wall of the crucible body, the microporous filter plate is vertically placed down until the lower end of the collet is pressed when the pull ring is loosened, the collet and the limiting block are stretched out from the lateral wall of the crucible body under the spring rebound force and fixed to the microporous filter plate, and the microporous filter plate can be taken out by pulling the pull ring, which facilitates disassembling and cleaning the microporous filter plate, guarantees the circulation of gas and the growth of crystal.

[0017] 2. The PVT method large size crystal preparation crucible, through the setting of the shaft, the flow guide plate, the turntable and the limiting mechanism, the turntable is rotated, the flow guide plate is rotated by the shaft, the handle is rotated after reaching the appropriate angle, the handle drives the bolt to move, the limiting column is fixed in the limiting hole of the turntable, the gas flow is controlled according to the predetermined direction, thereby improving the transmission efficiency and uniformity of the gas. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is overall structure schematic diagram of the utility model;

[0019] Figure 2 It is fixed mechanism cross section structure schematic diagram of the utility model;

[0020] Figure 3 It is limiting mechanism structure schematic diagram of the utility model;

[0021] Figure 4 It is a cross section structure schematic view of the crucible body of the utility model.

[0022] In the figure: 1, crucible body; 2, fixed mechanism;201, chuck;202, limit block;203, limit box;204, spring;205, pull rod;206, pull ring;3, rotating shaft;4, guide plate;5, rotating disc;6, limit mechanism;601, support;602, bolt;603, limit column;604, handle;7, microporous filter plate;8, crucible cover;9, handle. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1 to 4 The utility model provides technical scheme: PVT method large size crystal preparation crucible, including crucible body 1, the both sides of crucible body 1 are opened in sliding slot, the inside of sliding slot is slidably connected with fixed mechanism 2, guarantee the flow of gas and the growth of crystal through the setting of fixed mechanism 2, the one side of crucible body 1 is opened in two rotating holes, the inside of two rotating holes is rotatably connected with rotating shaft 3, the outside of rotating shaft 3 is fixedly connected with guide plate 4, the one end of rotating shaft 3 is fixedly connected with rotating disc 5, the surface of rotating disc 5 is opened in a plurality of limit holes, the lateral wall of crucible body 1 is fixedly connected with a group of limit mechanism 6, the setting of rotating shaft 3, guide plate 4, rotating disc 5 and limit mechanism 6 is convenient for controlling gas to flow according to predetermined direction, to improve the transmission efficiency and uniformity of gas;

[0025] Please refer to Figure 2 And Figure 4 Fixed mechanism 2 includes chuck 201 slidably connected in the inside of sliding slot, the one end of chuck 201 is fixedly connected with limit block 202, the outside of limit block 202 is slidably connected with limit box 203, a group of spring 204 is fixedly connected between the one side of limit block 202 and the inside wall of limit box 203, the one side of limit block 202 is fixedly connected with pull rod 205, the one side of pull rod 205 is fixedly connected with pull ring 206, pull ring 206 is convenient for driving pull rod 205 to move;

[0026] Please refer to Figure 1 And Figure 3The limiting mechanism 6 comprises a support 601 fixedly connected to the outer side wall of the crucible body 1, a threaded hole is formed in the middle of the support 601, a bolt 602 is threadedly connected to the inside of the threaded hole, one end of the bolt 602 is fixedly connected to a limiting column 603, and the other end of the bolt 602 is fixedly connected to a rotating handle 604, and the rotating handle 604 facilitates rotating the bolt 602;

[0027] Please refer to Figure 2 and Figure 4 The chuck 201 clamps the microporous filter plate 7, and the upper end of the chuck 201 is shorter than the lower end, so that the microporous filter plate 7 can pass through when the chuck 201 moves, and the lower end is convenient for limiting;

[0028] Please refer to Figure 3 The diameter of the limiting column 603 is greater than that of the bolt 602, so that the bolt 602 cannot fall off;

[0029] Please refer to Figure 1 The top of the crucible body 1 is rotationally connected with a crucible cover 8, and the surface of the crucible cover 8 is fixedly connected with a handle 9, and the handle 9 facilitates opening the crucible cover 8.

[0030] In the utility model, the working steps of the device are as follows:

[0031] The first step is that the pull ring 206 is pulled, the pull ring 206 drives the pull rod 205 and the limiting block 202 to move, and then drives the chuck 201 to move, until the upper end of the chuck 201 completely enters the side wall of the crucible body 1 and the lower end does not completely enter the side wall of the crucible body 1, the microporous filter plate 7 is vertically placed down until the lower end of the chuck 201 is abutted, and then the pull ring 206 is released, the chuck 201 and the limiting block 202 are stretched out from the side wall of the crucible body 1 under the rebounding force of the spring 204, and the microporous filter plate 7 is fixed, and the microporous filter plate 7 can be taken out by pulling the pull ring 206;

[0032] The second step is that the rotating disc 5 is rotated, the rotating disc 5 drives the deflector 4 to rotate through the rotating shaft 3, the rotating handle 604 is rotated after the rotating disc 5 is rotated to a suitable angle, the rotating handle 604 drives the bolt 602 to move, so that the limiting column 603 enters the limiting hole of the rotating disc 5 and is fixed. The foregoing embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the utility model.

Claims

1. A crucible for the production of large size crystals by the PVT method, comprising a crucible body (1), characterized in that Both sides of the crucible body (1) are provided with a chute, the inside of the chute is slidably connected with a fixing mechanism (2), one side of the crucible body (1) is provided with two rotating holes, the inside of the rotating holes is rotatably connected with a rotating shaft (3), the outside of the rotating shaft (3) is fixedly connected with a guide plate (4), one end of the rotating shaft (3) is fixedly connected with a rotating disc (5), the surface of the rotating disc (5) is provided with a plurality of limiting holes, the outer wall of the crucible body (1) is fixedly connected with a set of limiting mechanisms (6).

2. The PVT method large-size crystal preparation crucible according to claim 1, characterized in that, The fixing mechanism (2) comprises a chuck (201) slidably connected in the chute, one end of the chuck (201) is fixedly connected with a limiting block (202), the outside of the limiting block (202) is slidably connected with a limiting box (203), one side of the limiting block (202) and the inner wall of the limiting box (203) are fixedly connected with a set of springs (204), one side of the limiting block (202) is fixedly connected with a pull rod (205), one side of the pull rod (205) is fixedly connected with a pull ring (206).

3. The PVT method large-size crystal production crucible according to claim 1, characterized in that, The limiting mechanism (6) comprises a support (601) fixedly connected to the outer wall of the crucible body (1), a threaded hole is provided in the middle of the support (601), the inside of the threaded hole is threadedly connected with a bolt (602), one end of the bolt (602) is fixedly connected with a limiting column (603), the other end of the bolt (602) is fixedly connected with a handle (604).

4. The PVT method large-size crystal preparation crucible according to claim 2, characterized in that, The chuck (201) clamps a microporous filter plate (7), and the upper end of the chuck (201) is shorter than the lower end.

5. The PVT method large-size crystal preparation crucible according to claim 3, characterized in that, The diameter of the limiting column (603) is greater than the diameter of the bolt (602).

6. The PVT method large-size crystal production crucible according to claim 1, characterized in that, The top of the crucible body (1) is rotatably connected with a crucible cover (8), the surface of the crucible cover (8) is fixedly connected with a handle (9).

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