Mould water passing plate structure for melting quartz crucible

Abstract

The utility model discloses a mold water passing plate structure for melting a quartz crucible. The mold water passing plate structure comprises a water passing plate, a heat insulation ring, a mold, a circulating cooling water inlet pipe and a circulating cooling water outlet pipe, a heat insulation ring is integrally formed on the lower portion of the water passing plate, the lower edge of the heat insulation ring is movably inserted into an upper opening of the mold, a plurality of first cooling water channels are formed in the water passing plate in the thickness direction of the water passing plate, and a plurality of second cooling water channels are formed in the heat insulation ring in the height direction of the heat insulation ring. The mold has the advantages that the mold is simple in structure and easy to implement, the surface oxidation frequency of the mold is reduced, the grinding frequency of workers is reduced, time and labor are saved, meanwhile, the phenomenon that the upper edge is melted is avoided, the consumption of the mold is improved, the service life of the mold is prolonged, and the production cost of quartz crucibles produced by enterprises is reduced; and meanwhile, the quality of a quartz crucible product at the upper edge of the mold is ensured.

Description

Technical fields:

[0001] This utility model relates to a water-passing plate structure, and more particularly to a water-passing plate structure for a mold used for melting quartz crucibles. Background technology:

[0002] Quartz crucibles are primarily used to hold molten silicon and pull single-crystal silicon rods using the Czochralski (CZ) method. These rods are then cut into wafers for manufacturing solar cells. Therefore, with the continuous advancement of solar cell technology, the demand for quartz crucibles is increasing. Currently, quartz crucibles are mainly melted using the high-temperature electric arc method. A water-passing plate is an auxiliary device of the quartz crucible mold, installed above it. Its main function is to prevent heat loss from the mold during melting and to provide a reference for electrode positions. Patent number 202323534450.2 discloses a water-passing plate for melting quartz crucibles and its connecting structure. It discloses that a through hole is formed in the center of the water-passing plate, and a guide ring corresponding to the edge of the mold is integrally formed on the lower surface of the water-passing plate. A frame is mounted on one side of the water-passing plate, and the water-passing plate slides on the frame. A fixing plate slides on the frame above the water-passing plate, and three graphite electrodes are fixed on the fixing plate. The graphite electrodes move through through holes, allowing heat to be stored at the upper edge of the mold, preventing heat from escaping directly from the gaps, reducing energy consumption, and ensuring the quality of the upper edge of the quartz crucible product. This also ensures the distance between the water-passing plate and the mold, and the amount of graphite electrodes within the mold, thereby ensuring the melting effect of the quartz sand and improving the product quality of the quartz crucible. In the above patent, although the upper edge of the mold achieves heat storage, it is subjected to intense arc flame burning, and the surface is easily oxidized to form black iron(III) oxide. This requires manual grinding to clean the oxidized areas, which is time-consuming and labor-intensive. It can even lead to melting of the upper edge, resulting in mold failure, reducing its service life, and increasing the production cost of quartz crucibles. Utility Model Content:

[0003] The purpose of this utility model is to provide a mold water-passing plate structure for melting quartz crucibles that is simple to connect, saves time and effort, and extends its service life.

[0004] This utility model is implemented by the following technical solution: The purpose of this patent is to provide a mold water-passing plate structure for melting quartz crucibles, which includes a water-passing plate, a heat insulation ring, a mold, a circulating cooling water inlet pipe, and a circulating cooling water outlet pipe; the heat insulation ring is integrally formed on the lower part of the water-passing plate, and the lower edge of the heat insulation ring is movably inserted into the upper opening of the mold; several sets of first cooling water channels are arranged in the water-passing plate along its thickness direction, the inlet of each set of first cooling water channels is connected to the outlet of the circulating cooling water inlet pipe, and the outlet of each set of first cooling water channels is connected to the inlet of the circulating cooling water outlet pipe; several sets of second cooling water channels are arranged in the heat insulation ring along its height direction, the inlet of each second cooling water channel is connected to the outlet of the nearest circulating cooling water inlet pipe above the heat insulation ring, and the outlet of each second cooling water channel is connected to the outlet of the nearest circulating cooling water outlet pipe above the heat insulation ring.

[0005] Furthermore, the center lines of the water-passing plate, the heat insulation ring, and the mold are on the same line.

[0006] Furthermore, the centerline of the first cooling water channel in each group is the same as the centerline of the water-passing plate.

[0007] Furthermore, each group of the first cooling water channels includes several channels at the same height, with the same center, and whose diameters increase sequentially.

[0008] Furthermore, the centerline of each group of second cooling water channels is the same as the centerline of the heat insulation ring.

[0009] Advantages of this utility model: 1. This utility model has a simple structure and is easy to implement. By setting a heat insulation ring below the water-passing plate, and setting a first cooling water channel in the water-passing plate and a second cooling water channel in the heat insulation ring, the water-passing plate and the heat insulation ring are effectively cooled and de-temperatured, preventing them from being burned and damaged by the electric arc flame. The heat insulation ring also blocks the direct burning of the upper edge of the mold by the electric arc flame, thereby reducing the frequency of surface oxidation, reducing the number of times workers need to polish, saving time and labor, and preventing the melting of the upper edge. This improves the consumption of the mold, extends its service life, and reduces the production cost of quartz crucibles for enterprises; 2. The heat insulation ring also prevents the direct leakage of heat, thereby reducing power consumption and ensuring the quality of the quartz crucible products at the upper edge of the mold. Attached image description:

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 for Figure 1 A cross-sectional view of section AA.

[0013] Figure 3 for Figure 1 A cross-sectional view of section BB.

[0014] Water plate 1, first cooling water channel 11, heat insulation ring 2, second cooling water channel 21, mold 3, circulating cooling water inlet pipe 4, circulating cooling water outlet pipe 5. Detailed implementation method:

[0015] Example: Figure 1-3 As shown, a water-passing plate structure for a quartz crucible melting mold includes a water-passing plate 1, a heat insulation ring 2, a mold 3, a circulating cooling water inlet pipe 4, and a circulating cooling water outlet pipe 5. The heat insulation ring 2 is integrally formed at the lower part of the water-passing plate 1, and its lower edge is movably inserted into the upper opening of the mold 3. The center lines of the water-passing plate 1, the heat insulation ring 2, and the mold 3 are aligned. The heat insulation ring 2 prevents the electric arc flame from directly burning the upper edge of the mold 3, thereby reducing the frequency of surface oxidation, reducing the number of polishing operations, saving time and labor, and preventing the upper edge from melting. This improves the wear and tear on the mold 3, extends its service life, and reduces the production cost of quartz crucibles. The heat insulation ring 2 also prevents direct heat leakage, thus reducing energy consumption and ensuring the quality of the quartz crucible product at the upper edge of the mold 3.

[0016] Two sets of first cooling water channels 11 are arranged along the thickness direction inside the water-passing plate 1. The inlet of each set of first cooling water channels 11 is connected to the outlet of the circulating cooling water inlet pipe 4, and the outlet of each set of first cooling water channels 11 is connected to the inlet of the circulating cooling water outlet pipe 5. The center line of each set of first cooling water channels 11 is the same as the center line of the water-passing plate 1. Each set of first cooling water channels 11 includes several channels with the same height, the same center, and progressively larger diameters, which improves the cooling effect.

[0017] Several sets of second cooling water channels 21 are arranged along the height direction inside the heat insulation ring 2. The inlet of each second cooling water channel 21 is connected to the outlet of the nearest circulating cooling water inlet pipe 4 above the heat insulation ring 2, and the outlet of each second cooling water channel 21 is connected to the outlet of the nearest circulating cooling water outlet pipe 5 above the heat insulation ring 2. The center line of each set of second cooling water channels 21 is the same as the center line of the heat insulation ring 2.

[0018] By setting a heat insulation ring 2 below the water-passing plate 1, and setting a first cooling water channel 11 in the water-passing plate 1 and a second cooling water channel 21 in the heat insulation ring 2, the water-passing plate 1 and the heat insulation ring 2 are effectively cooled and de-temperatureed, preventing them from being burned and damaged by electric arc flames.

[0019] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold water dam structure for fusion quartz crucibles, characterized by, It includes a water-passing plate, a heat insulation ring, a mold, a circulating cooling water inlet pipe, and a circulating cooling water outlet pipe. The heat insulation ring is integrally formed on the lower part of the water-passing plate, and the lower edge of the heat insulation ring is movably inserted into the upper opening of the mold. Several sets of first cooling water channels are arranged in the water-passing plate along its thickness direction. The inlet of each set of first cooling water channels is connected to the outlet of the circulating cooling water inlet pipe, and the outlet of each set of first cooling water channels is connected to the inlet of the circulating cooling water outlet pipe. Several sets of second cooling water channels are arranged in the heat insulation ring along its height direction. The inlet of each second cooling water channel is connected to the outlet of the nearest circulating cooling water inlet pipe above the heat insulation ring, and the outlet of each second cooling water channel is connected to the outlet of the nearest circulating cooling water outlet pipe above the heat insulation ring.

2. A mold weir structure for fusion casting quartz crucibles according to claim 1, wherein The center lines of the water-passing plate, the heat insulation ring, and the mold are on the same line.

3. A mold weir structure for fusion casting quartz crucibles according to claim 1, wherein The centerline of the first cooling water channel in each group is the same as the centerline of the water-passing plate.

4. A mold weir structure for fusion casting quartz crucibles according to claim 3, wherein Each group of first cooling water channels includes several channels at the same height, with the same center, and whose diameters increase sequentially.

5. A mold weir structure for fusion casting quartz crucibles according to claim 1, wherein The centerline of each group of second cooling water channels is the same as the centerline of the heat insulation ring.

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