Crucible shaft and single crystal furnace

Abstract

The utility model relates to the technical field of photovoltaic thermal fields, in particular to a crucible shaft and a single crystal furnace, the crucible shaft comprises a supporting bowl and a supporting rod shaft which are arranged in a split manner, the supporting bowl is arranged at the top of the supporting rod shaft, the connecting part of the supporting bowl and the supporting rod shaft adopts a left-hand thread design, and the supporting bowl is arranged on the supporting rod shaft. And the supporting bowl is in threaded connection with the supporting rod shaft through a left-hand thread. On the basis that the manufacturing cost is reduced, the supporting strength is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic thermal fields, and particularly to a crucible shaft and a single crystal furnace. Background Art

[0002] The existing crucible shaft in the photovoltaic thermal field is made of isostatic graphite material. To ensure the support strength, it is basically integrally formed. According to the characteristics of graphite processing, a whole graphite round blank needs to be milled out; although some enterprises make it in an upper and lower split form to reduce the manufacturing cost, its service life is not satisfactory. Therefore, if the support strength is sufficient, the cost is high, and if it is made into a split structure, the service life does not meet the standard.

[0003] Problems existing in the prior art are as follows:

[0004] 1. High manufacturing cost;

[0005] 2. Weak support strength and unable to meet the feeding amount of the existing photovoltaic thermal field;

[0006] 3. Short service life, and it is basically compulsorily scrapped every three months. Content of the Utility Model

[0007] The purpose of the utility model is to provide a crucible shaft which can ensure the support strength and increase the service life on the basis of reducing the manufacturing cost.

[0008] Another purpose of the utility model is to provide a single crystal silicon which can optimize the structure of the crucible shaft, ensure its support strength and increase the service life on the basis of reducing the manufacturing cost.

[0009] The technical solution of the utility model is realized as follows:

[0010] A crucible shaft rotates clockwise during operation. The crucible shaft includes a split bowl and a rod shaft. The bowl is arranged at the top of the rod shaft. The connection part between the bowl and the rod shaft adopts a left-handed thread design, and the bowl and the rod shaft are threadedly connected through the left-handed thread.

[0011] Furthermore, it further includes a fixing component which locks and fixes the bowl and the rod shaft.

[0012] Furthermore, the outer side wall of the upper part of the rod shaft is provided with a left-handed external thread, the bowl has a left-handed threaded hole, the inner wall of the left-handed threaded hole is provided with a left-handed internal thread matching the small left-handed external thread, and the upper part of the rod shaft is installed in the left-handed threaded hole and threadedly connected.

[0013] Further, the supporting bowl is in a circular plate shape, and a left-handed threaded hole is formed in the bottom of the supporting bowl along the central axis of the supporting bowl.

[0014] Further, the supporting bowl is in an annular shape, and the left-handed threaded hole is formed in the inner wall of the supporting bowl.

[0015] Further, the fixing assembly includes at least one locking screw, and the locking screw connects and locks the supporting bowl and the supporting rod shaft.

[0016] Further, the locking screw is a stitch screw.

[0017] Further, the supporting bowl and the supporting rod shaft are threadedly connected through an M110×3 left-handed thread.

[0018] Further, both the supporting bowl and the supporting rod shaft are made of isostatic pressing graphite material.

[0019] A single crystal furnace includes the crucible shaft described above.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] Since the crucible shaft rotates clockwise during actual operation, although the crucible shaft in this solution adopts a split design of a supporting rod shaft and a supporting bowl to reduce the manufacturing cost, the supporting rod shaft and the supporting bowl on it are connected by tightening with a left-handed thread. In this way, when the crucible shaft rotates clockwise, the cooperation between the supporting rod shaft and the supporting bowl becomes tighter and tighter, without any looseness, thereby ensuring the stability of the crystal growth liquid level. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can also be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a sectional view of the crucible shaft in Embodiment 1 of the present utility model;

[0024] Figure 2 It is an axonometric view of the crucible shaft in Embodiment 1 of the present utility model.

[0025] In the figure:

[0026] 1 - Supporting bowl; 2 - Supporting rod shaft; 3 - Stitch screw; 4 - Left-handed thread. Detailed Embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, 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. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0029] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the utility model product is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] The following will, in conjunction with the accompanying drawings, elaborate on some embodiments of the present utility model. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0034] Embodiment 1

[0035] Referring to Figure 1 - Figure 2 , this embodiment provides a crucible shaft. When the crucible shaft actually works, it rotates in the clockwise direction. The crucible shaft includes a separately arranged supporting bowl 1 and a supporting rod shaft 2. The supporting bowl 1 is arranged at the top of the supporting rod shaft 2. The connecting part between the supporting bowl 1 and the supporting rod shaft 2 is designed with a left-handed thread 4, and the supporting bowl 1 and the supporting rod shaft 2 are threadedly connected through the left-handed thread 4.

[0036] Specifically, in order to further improve the fastening effect between the supporting bowl 1 and the supporting rod shaft 2, the crucible shaft further includes a fixing component, and the supporting bowl 1 and the supporting rod shaft 2 are locked and fixed through the fixing component.

[0037] The outer side wall of the upper part of the supporting rod shaft 2 is provided with a left-handed external thread. The supporting bowl 1 has a left-handed threaded hole. The inner wall of the left-handed threaded hole is provided with a left-handed internal thread matching the small left-handed external thread, and the upper part of the supporting rod shaft 2 is installed in the left-handed threaded hole and is threadedly connected.

[0038] Specifically, the supporting bowl 1 can be in a circular ring shape. The left-handed threaded hole is opened on the inner wall of the supporting bowl 1, and the left-handed threaded hole matches the left-handed external thread of the supporting rod shaft 2.

[0039] Preferably, the supporting bowl 1 and the supporting rod shaft 2 are threadedly connected through an M110×3 left-handed thread 4.

[0040] In this embodiment, the fixing component includes at least one locking screw, and the locking screw connects and locks the supporting bowl 1 and the supporting rod shaft 2.

[0041] Preferably, the locking screw can adopt a stitch screw 3. After the supporting bowl 1 and the supporting rod shaft 2 are threadedly connected through the left-handed thread 4, they are further fastened and locked through the stitch screw 3.

[0042] Both the supporting bowl 1 and the supporting rod shaft 2 are made of isostatic pressing graphite material.

[0043] Since the crucible shaft rotates in the clockwise direction during operation, although the crucible shaft in this solution adopts a split design of the support rod shaft 2 and the support bowl 1 to reduce the manufacturing cost, after the support rod shaft 2 and the upper support bowl 1 are tightened by the left-handed thread 4 of M110*3, they are locked with a stitching screw. In this way, when the crucible shaft rotates in the clockwise direction, the cooperation between the support rod shaft 2 and the support bowl 1 becomes tighter and tighter, without any looseness, thus ensuring the stability of the crystal growth liquid surface. On the basis of reducing the manufacturing cost, the support strength is ensured, and the service life is increased.

[0044] Embodiment 2

[0045] This embodiment provides a crucible shaft. The crucible shaft rotates in the clockwise direction during actual operation. The crucible shaft includes a support bowl 1 and a support rod shaft 2 that are separately arranged. The support bowl 1 is arranged at the top of the support rod shaft 2. The connection part between the support bowl 1 and the support rod shaft 2 adopts a left-handed thread 4 design, and the support bowl 1 and the support rod shaft 2 are threadedly connected through the left-handed thread 4.

[0046] Specifically, in order to further improve the fastening effect between the support bowl 1 and the support rod shaft 2, the crucible shaft further includes a fixing component, and the support bowl 1 and the support rod shaft 2 are locked and fixed through the fixing component.

[0047] The upper outer side wall of the support rod shaft 2 is provided with a left-handed external thread. The support bowl 1 has a left-handed threaded hole. The inner wall of the left-handed threaded hole is provided with a left-handed internal thread that matches the small left-handed external thread, and the upper part of the support rod shaft 2 is installed in the left-handed threaded hole and is threadedly connected.

[0048] Specifically, the support bowl 1 can be in the shape of a circular plate. The left-handed threaded hole is opened along the central axis of the bottom of the support bowl 1, and the left-handed threaded hole matches the left-handed external thread of the support rod shaft 2.

[0049] Preferably, the support bowl 1 and the support rod shaft 2 are threadedly connected through the left-handed thread 4 of M110×3.

[0050] In this embodiment, the fixing component includes at least one locking screw, and the locking screw connects and locks the support bowl 1 and the support rod shaft 2.

[0051] Preferably, the locking screw can adopt a stitching screw 3. After the support bowl 1 is buckled on the support rod shaft 2 and threadedly connected through the left-handed thread 4, it is further tightened and locked by the stitching screw 3.

[0052] Both the support bowl 1 and the support rod shaft 2 are made of isostatic graphite material.

[0053] Since the crucible shaft rotates clockwise during operation, although the crucible shaft in this solution adopts a split design of the support rod shaft 2 and the support bowl 1 to reduce the manufacturing cost, after the support rod shaft 2 and the upper support bowl 1 are tightened by the left-handed thread 4 of M110*3, they are locked with a stitching screw. In this way, when the crucible shaft rotates clockwise, the cooperation between the support rod shaft 2 and the support bowl 1 becomes tighter and tighter, without any looseness, thus ensuring the stability of the crystal growth liquid surface. On the basis of reducing the manufacturing cost, the support strength is ensured and the service life is increased.

[0054] Embodiment 3

[0055] This embodiment provides a crucible shaft that rotates counterclockwise during actual operation. The crucible shaft includes a support bowl 1 and a support rod shaft 2 that are separately arranged. The support bowl 1 is arranged at the top of the support rod shaft 2. The connection part between the support bowl 1 and the support rod shaft 2 adopts a right-handed thread design, and the support bowl 1 and the support rod shaft 2 are threadedly connected through the right-handed thread.

[0056] Specifically, in order to further improve the fastening effect between the support bowl 1 and the support rod shaft 2, the crucible shaft further includes a fixing component, and the support bowl 1 and the support rod shaft 2 are locked and fixed through the fixing component.

[0057] The outer side wall of the upper part of the support rod shaft 2 is provided with a right-handed external thread. The support bowl 1 has a right-handed threaded hole. The inner wall of the right-handed threaded hole is provided with a right-handed internal thread that matches the small right-handed external thread, and the upper part of the support rod shaft 2 is installed in the right-handed threaded hole and is threadedly connected.

[0058] Specifically, the support bowl 1 can be in a circular ring shape, and the right-handed threaded hole is opened on the inner wall of the support bowl 1, and the right-handed threaded hole matches the right-handed external thread of the support rod shaft 2.

[0059] Preferably, the support bowl 1 and the support rod shaft 2 are threadedly connected through the right-handed thread of M110×3.

[0060] In this embodiment, the fixing component includes at least one locking screw, and the locking screw connects and locks the support bowl 1 and the support rod shaft 2.

[0061] Preferably, the locking screw can adopt a stitching screw 3. After the support bowl 1 and the support rod shaft 2 are threadedly connected through the right-handed thread, they are further tightened and locked by the stitching screw 3.

[0062] Both the support bowl 1 and the support rod shaft 2 are made of isostatic graphite material.

[0063] Since the crucible shaft rotates counterclockwise during operation, although the crucible shaft in this solution adopts a split design of the support rod shaft 2 and the support bowl 1 to reduce the manufacturing cost, after the support rod shaft 2 and the upper support bowl 1 are tightened by a right-handed thread of M110*3 and then locked with a stitching screw, it is ensured that when the crucible shaft rotates counterclockwise, the cooperation between the support rod shaft 2 and the support bowl 1 becomes tighter and there is no slightest looseness, thus ensuring the stability of the crystal growth liquid surface. On the basis of reducing the manufacturing cost, the support strength is ensured and the service life is increased.

[0064] Example 4

[0065] This embodiment provides a crucible shaft that rotates counterclockwise during actual operation. The crucible shaft includes a support bowl 1 and a support rod shaft 2 that are separately arranged. The support bowl 1 is arranged at the top of the support rod shaft 2. The connection part between the support bowl 1 and the support rod shaft 2 adopts a right-handed thread design, and the support bowl 1 and the support rod shaft 2 are threadedly connected through the right-handed thread.

[0066] Specifically, in order to further improve the fastening effect between the support bowl 1 and the support rod shaft 2, the crucible shaft further includes a fixing component, and the support bowl 1 and the support rod shaft 2 are locked and fixed through the fixing component.

[0067] The upper outer side wall of the support rod shaft 2 is provided with a right-handed external thread, the support bowl 1 has a right-handed threaded hole, the inner wall of the right-handed threaded hole is provided with a right-handed internal thread that matches the small right-handed external thread, and the upper part of the support rod shaft 2 is installed in the right-handed threaded hole and is threadedly connected.

[0068] Specifically, the support bowl 1 can be in the shape of a circular plate, and the right-handed threaded hole is opened along the central axis of the bottom of the support bowl 1, and the right-handed threaded hole matches the right-handed external thread of the support rod shaft 2.

[0069] Preferably, the support bowl 1 and the support rod shaft 2 are threadedly connected through a right-handed thread of M110×3.

[0070] In this embodiment, the fixing component includes at least one locking screw, and the locking screw connects and locks the support bowl 1 and the support rod shaft 2.

[0071] Preferably, the locking screw can adopt a stitching screw 3. After the support bowl 1 is buckled on the support rod shaft 2 and threadedly connected through the right-handed thread, it is further tightened and locked by the stitching screw 3.

[0072] Both the support bowl 1 and the support rod shaft 2 are made of isostatic graphite material.

[0073] Since the crucible shaft rotates counterclockwise during operation, although the crucible shaft in this solution adopts a split-designed support rod shaft 2 and support bowl 1 to reduce manufacturing costs, the support rod shaft 2 and the upper support bowl 1 are tightened by a right-handed thread M110*3 and then locked with a stitching screw. In this way, when the crucible shaft rotates counterclockwise, the cooperation between the support rod shaft 2 and the support bowl 1 becomes tighter and there will be no slightest looseness, thus ensuring the stability of the crystal growth liquid surface. On the basis of reducing manufacturing costs, the support strength is ensured and the service life is increased.

[0074] Embodiment 5

[0075] This embodiment provides a single crystal furnace, and the crucible shaft used in its photovoltaic thermal field adopts any one of the crucible shafts in Embodiments 1-4, which ensures the support strength and increases the service life of the crucible shaft on the basis of reducing manufacturing costs.

[0076] The beneficial effects of the technical solution of the present utility model are as follows:

[0077] 1. The structure is more reasonable. When the crucible shaft rotates clockwise during actual operation, the connection between the drag rod shaft and the drag bowl is tightly connected by a left-handed thread 4 and finally locked with a stitching screw; when the crucible shaft rotates counterclockwise during actual operation, the connection between the drag rod shaft and the drag bowl is tightly connected by a right-handed thread and finally locked with a stitching screw; the support bowl 1 and the support rod shaft 2 are of split design, with low cost and improved support strength;

[0078] 2. The technical solution is more conducive to actual mass production and promotion;

[0079] 3. It has a long service life and can meet the requirement of no failure during the photovoltaic crystal growth cycle;

[0080] 4. It is easy to maintain and repair.

[0081] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

[0082] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A crucible shaft that rotates in a clockwise direction during operation, characterized in that, The crucible shaft includes a separately arranged supporting bowl (1) and a supporting rod shaft (2). The supporting bowl (1) is arranged at the top of the supporting rod shaft (2). The connecting part between the supporting bowl (1) and the supporting rod shaft (2) is designed with a left-handed thread (4), and the supporting bowl (1) and the supporting rod shaft (2) are threadedly connected through the left-handed thread (4).

2. The crucible shaft according to claim 1, characterized in that, It further includes a fixing component, and the fixing component locks and fixes the supporting bowl (1) and the supporting rod shaft (2).

3. The crucible shaft according to claim 1, wherein The outer side wall of the upper part of the supporting rod shaft (2) is provided with a left-handed external thread. The supporting bowl (1) has a left-handed threaded hole, and the inner wall of the left-handed threaded hole is provided with a left-handed internal thread matching the small left-handed external thread. The upper part of the supporting rod shaft (2) is installed in the left-handed threaded hole and is threadedly connected.

4. The crucible shaft according to claim 3, wherein, The supporting bowl (1) is in a circular plate shape, and the left-handed threaded hole is opened along the central axis of the bottom of the supporting bowl (1).

5. The crucible shaft according to claim 3, wherein The supporting bowl (1) is in an annular shape, and the left-handed threaded hole is opened on the inner wall of the supporting bowl (1).

6. The crucible shaft according to claim 2, characterized in that, The fixing component includes at least one locking screw, and the locking screw connects and locks the supporting bowl (1) and the supporting rod shaft (2).

7. The crucible shaft according to claim 6, wherein The locking screw uses a stitch screw (3).

8. The crucible shaft according to claim 1, characterized in that, The supporting bowl (1) and the supporting rod shaft (2) are threadedly connected through an M110×3 left-handed thread (4).

9. The crucible shaft according to claim 1, characterized in that, Both the supporting bowl (1) and the supporting rod shaft (2) are made of isostatic graphite material.

10. A single crystal furnace, characterized in that, It includes the crucible shaft according to any one of claims 1-9.

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