Masterbatch fixing device

Abstract

The utility model discloses a master batch fixing device, including chuck, be used for loading master batch, and the open outer edge of chuck is circumscribed, and the screw hole is respectively distributed with the first distance place and the second distance place of distance lower edge of prearranging first distance of chuck side wall distance upper edge, the gasket is placed between chuck and base, and the upper surface of gasket and the lower end surface of chuck are connected through concave-convex cooperation work piece, and the lower surface of gasket and the upper end surface of base are connected through screw thread, the base is used for supporting chuck. Thus the utility model can be more firm fixed with master batch, and it is not easy to deviate and is even forced.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and in particular to a masterbatch fixing device. Background Technology

[0002] In the process of developing this utility model, it was discovered that existing fixing devices cannot securely fix the masterbatch to the chuck, cannot ensure that the bottom surface of the masterbatch is firmly placed in the center of the chuck, and suffer from uneven stress. Simultaneously, heating causes the fixing device to shift from the masterbatch, leading to furnace shutdown and melt cap collapse, failing to guarantee the required length or diameter for silicon core pulling, and affecting the appearance quality of the silicon core, resulting in defects such as uneven threads and thickness. Silicon core pulling is a process of converting high-purity polycrystalline silicon raw materials into compliant monocrystalline silicon cores through a specific process. Silicon cores are the key "seed" material for manufacturing single-crystal silicon (especially Czochralski-grown single-crystal silicon), and their purity, crystal structure integrity, and geometric precision directly determine the quality of subsequent monocrystalline silicon products, widely used in high-end fields such as semiconductor chips and photovoltaic cells. Utility Model Content

[0003] In view of this, the present invention provides a masterbatch fixing device that can achieve a relatively firm fixation of the masterbatch, which is not easy to shift and the force is evenly distributed.

[0004] To achieve the above objectives, a masterbatch fixing device is provided according to an embodiment of the present invention, comprising a chuck, a gasket, and a base; wherein, the chuck is used to load masterbatch, and the outer edge of the opening on the chuck is tangentially ...

[0005] Optionally, the chuck is cylindrical and has a depth and inner diameter set according to the length and diameter of the loaded masterbatch, so that the masterbatch fits the bottom of the chuck and the axis of the masterbatch is aligned with the center of the chuck.

[0006] Optionally, this includes: the first distance may be the same as or different from the second distance.

[0007] Optionally, it includes: the same number of screw holes evenly distributed on the side wall of the chuck at a preset first distance from the upper edge and at a preset second distance from the lower edge.

[0008] Optionally, it includes: the screw holes at a preset first distance from the upper edge of the chuck sidewall and the screw holes at a preset second distance from the lower edge of the chuck sidewall are arranged in a staggered manner.

[0009] Optionally, it includes: a groove is provided at the center of the upper surface of the gasket, and a protrusion is provided at the center of the lower end face of the chuck.

[0010] Optionally, it includes: a threaded nut is provided at the center of the upper end face of the base, and a threaded screw is provided at the center of the lower surface of the washer.

[0011] Optionally, it includes: at least two screw holes are provided through the circumferential edge of the lower end face of the chuck, the circumferential edge of the gasket, and the circumferential edge of the upper end face of the base, respectively, and at equal intervals.

[0012] One embodiment of the above-mentioned utility model has the following advantages or beneficial effects: The utility model provides a masterbatch fixing device that is reasonably designed, simple in structure, low in manufacturing cost, and easy to operate, which improves the yield of silicon rod pulling and reduces production costs; it avoids the waste of raw materials and time caused by unreliable masterbatch fixing and silicon core pulling failure, and shortens the cycle of silicon core pulling work.

[0013] The further effects of the aforementioned unconventional alternative methods will be explained below in conjunction with specific implementation methods. Attached Figure Description

[0014] The accompanying drawings are provided to better understand this utility model and do not constitute an undue limitation thereof. Wherein:

[0015] Figure 1 This is a schematic diagram of the masterbatch fixing device according to an embodiment of the present utility model;

[0016] Figure 2 This is a bottom view of the chuck of the masterbatch fixing device according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the gasket of the masterbatch fixing device according to an embodiment of the present utility model. Detailed Implementation

[0018] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These embodiments should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0019] At least one embodiment of this utility model provides a masterbatch fixing device. The masterbatch refers to a rod-shaped structure that serves as a starting carrier or raw material for silicon deposition. The masterbatch is a polycrystalline silicon rod used as a raw material to produce high-purity monocrystalline silicon. For example... Figure 2As shown, the masterbatch fixing device may include a chuck 1, a gasket 2, and a base 3. In an embodiment, the chuck 1 is used to load masterbatch, and the outer edge of the upper opening of the chuck 1 is outwardly tangent (for example, the outer edge of the upper opening is outwardly tangent at 45°). Screw holes are distributed on the side wall of the chuck 1 at a predetermined first distance from the upper edge and a predetermined second distance from the lower edge. The gasket 2 is placed between the chuck 1 and the base 3, and the upper surface of the gasket 2 is connected to the lower end face of the chuck 1 through a convex-concave mating workpiece, while the lower surface of the gasket 2 is connected to the upper end face of the base 3 through a threaded connection. The base 3 is used to support the chuck.

[0020] In a preferred embodiment, the first distance and the second distance may be the same or different. For example, both the first distance and the second distance are 3cm.

[0021] In addition, the material of the masterbatch fixing device of this utility model can be 316 or 316L stainless steel.

[0022] In some other embodiments of this utility model, the chuck 1 is cylindrical, and its depth and inner diameter are set according to the length and diameter of the loaded masterbatch, so that the masterbatch fits against the bottom of the chuck 1 and the axis of the masterbatch is aligned with the center of the chuck 1. For example: the depth of the chuck 1 is determined to be 7cm-30cm and the diameter is 10cm-30cm based on the length of the masterbatch being in the range of 90cm-150cm and the diameter of the masterbatch being in the range of 10cm-30cm. That is, according to the actual diameter and length of the masterbatch, a matching gasket, chuck, and base can be selected.

[0023] Preferably, the lower end face of the chuck 1 can also be designed as a cone to ensure that the bottom of the masterbatch is stably embedded, the bottom surface of the masterbatch is in contact with the bottom of the chuck (without being suspended), and the bottom surface of the masterbatch is placed in the center of the chuck (without obvious offset), so that the force is uniform and there is an appropriate gap between the masterbatch and the inner wall of the chuck 1.

[0024] As some other embodiments of this utility model, such as Figure 1 As shown, the same number of screw holes are evenly distributed on the side wall of chuck 1 at a predetermined first distance from the upper edge and a predetermined second distance from the lower edge. It should be noted that the screw holes at the predetermined first distance from the upper edge and the screw holes at the predetermined second distance from the lower edge are staggered. For example, the chuck has three evenly distributed screw holes at the upper edge and three evenly distributed screw holes at the lower edge, with the three screw holes at the upper edge and the three screw holes at the lower edge staggered.

[0025] As a further embodiment of this utility model, such as Figure 2 , 3As shown, the upper surface of the gasket 2 has a groove at its center, and the lower end face of the chuck 1 has a protrusion at its center. Additionally, a threaded nut is located at the center of the upper end face of the base 3, and a threaded screw is located at the center of the lower surface of the gasket 2.

[0026] Furthermore, in a preferred embodiment, at least two screw holes are provided through the circumferential edge of the lower end face of the chuck 1, the circumferential edge of the gasket 2, and the circumferential edge of the upper end face of the base 3, and are provided at equal intervals. For example, three screw holes are evenly distributed at 120° intervals along the circumferential edges of the chuck 1, gasket 2, and base 3, respectively. Screws can be inserted sequentially from the screw holes on the circumferential edge of the base 3 into the screw holes on the circumferential edge of the gasket 2 and the screw holes on the circumferential edge of the chuck 1 for fixing, and the screw holes on the circumferential edge of the chuck 1 have threads.

[0027] Unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., can refer to fixed connections, detachable connections, or integral connections. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0028] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A masterbatch fixing device, characterized in that, include: Chuck, gasket, and base; among which, The chuck is used to load masterbatch, and the outer edge of the opening on the chuck is tangent. Screw holes are distributed on the side wall of the chuck at a preset first distance from the upper edge and a preset second distance from the lower edge, respectively. The gasket is placed between the chuck and the base, and the upper surface of the gasket is connected to the lower end face of the chuck through a convex-concave mating workpiece, while the lower surface of the gasket is connected to the upper end face of the base through a thread. The base is used to support the chuck.

2. The masterbatch fixing device according to claim 1, characterized in that, include: The chuck is cylindrical, and its depth and inner diameter are set according to the length and diameter of the loaded masterbatch, so that the masterbatch fits the bottom of the chuck and the axis of the masterbatch is aligned with the center of the chuck.

3. The masterbatch fixing device according to claim 1, characterized in that, include: The same number of screw holes are evenly distributed on the side wall of the chuck at a preset first distance from the upper edge and a preset second distance from the lower edge.

4. The masterbatch fixing device according to claim 3, characterized in that, include: The screw holes at a predetermined first distance from the upper edge of the chuck sidewall are staggered with the screw holes at a predetermined second distance from the lower edge of the chuck sidewall.

5. The masterbatch fixing device according to claim 1, characterized in that, include: The upper surface of the gasket has a groove at its center, and the lower end face of the chuck has a protrusion at its center.

6. The masterbatch fixing device according to claim 1, characterized in that, include: A threaded nut is located at the center of the upper surface of the base, and a threaded screw is located at the center of the lower surface of the washer.

7. The masterbatch fixing device according to any one of claims 1-6, characterized in that, include: The chuck's lower end face circumferential edge, the gasket's circumferential edge, and the base's upper end face circumferential edge are each provided with at least two screw holes at equal intervals.

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