CN219861061U

CN219861061U - Quartz crucible forming die

Info

Publication number: CN219861061U
Application number: CN202320964220.0U
Authority: CN
Inventors: 吴佩芳; 李和栋; 徐振华; 赵呈旭
Original assignee: Jiangsu Xinyiyang High Tech Materials Co ltd
Current assignee: Jiangsu Xinyiyang High Tech Materials Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-10-20
Anticipated expiration: 2033-04-25

Abstract

The utility model relates to a quartz crucible forming die, which relates to the technical field of quartz crucible manufacturing, and comprises a pot body and a water jacket, wherein the water jacket is sleeved outside the pot body, a vacuum pumping cavity is formed between the pot body and the water jacket, the bottom end of the water jacket is communicated with a vacuum pumping pipeline for vacuumizing, the pot body comprises a bottom plate, an arc-shaped annular plate, an annular plate and a connecting flange which are sequentially and fixedly connected, a plurality of vacuum holes are formed in the bottom plate, the arc-shaped annular plate and the annular plate, each vacuum hole comprises a first air pumping hole and a second air pumping hole, the plurality of first air pumping holes are circumferentially arranged on the arc-shaped annular plate and the upper side of the annular plate, the plurality of second air pumping holes are circumferentially arranged on the bottom plate and the lower side of the annular plate, and the distance between the plurality of adjacent first air pumping holes is smaller than the distance between the plurality of adjacent second air pumping holes. The quartz crucible forming die has more uniform vacuumizing effect, reduces the possibility of generating micro bubbles in the production process of the quartz crucible, and is beneficial to improving the quality and the yield of the quartz crucible.

Description

Quartz crucible forming die

Technical Field

The utility model relates to the technical field of quartz crucible manufacturing, in particular to a quartz crucible forming die.

Background

The quartz crucible has the advantages of high purity, strong temperature resistance, large size precision, good heat preservation, energy conservation, stable quality and the like, is widely applied to different fields, a mold for manufacturing the quartz crucible in the related technology is extremely easy to damage in the production process, the quartz crucible capable of being produced is generally about 100 molds, the service life is short, the production cost is high, and the pollution of production is high.

The reference CN110893640a discloses a metal pot body for producing quartz crucible, the side wall and bottom of the pot body are uniformly provided with vacuum holes, the orifice end of one side of the vacuum hole is provided with a side air inlet groove, the vacuum hole is internally provided with an air-permeable sand-preventing piece, the quartz crucible produced by the quartz crucible metal mould with the structure has stable quality, the service life of the mould is 800-1000 times, and the manufacturing cost of the quartz crucible is greatly reduced.

However, when the initially formed quartz crucible is pushed to a melting area together with the mold for melting, as the temperature at each height in the mold and the distance from the vacuumizing port are in a certain gradient, the vacuumizing effect is different, so that microbubbles are generated in the crucible, and further, the electrified graphite electrode can also generate airflow impact on the bottom of the mold, so that fine quartz sand is converged at the arc surface of the quartz crucible, microbubbles are generated in the quartz crucible finished product, and the quality and the yield of the quartz crucible are affected.

Disclosure of Invention

The utility model aims to provide a quartz crucible pot body with more uniform vacuumizing effect.

The utility model provides a quartz crucible forming die which adopts the following technical scheme:

the utility model provides a quartz crucible forming die, includes the pot body and water jacket, the water jacket cover is established the pot body is external, form the evacuation cavity between the pot body and the water jacket, the bottom intercommunication of water jacket has the pipeline of bleeding that is used for evacuating, the pot body is including bottom plate, arc annular slab, annular slab and flange of fixed connection in proper order, the bottom plate the arc annular slab with a plurality of vacuum holes have all been seted up on the annular slab, the vacuum hole includes first gas vent and second gas vent, a plurality of first gas vent encircles the setting on the arc annular slab with the annular slab upside, a plurality of second gas vent encircles the setting on the bottom plate with the downside of annular slab, a plurality of adjacent intervals between the first gas vent are less than a plurality of adjacent intervals between the second gas vent.

Through adopting above-mentioned technical scheme, arc annular slab department and annular slab upside's first gas vent compare in the second gas vent of bottom plate and annular slab downside more closely, reduced the lower and influence far away from the pipeline of bleeding of annular slab department temperature, also reduced the impact that makes tiny quartz sand collect arc annular slab department at crucible melting in-process air current impact, be favorable to making up the pipeline of bleeding to the effect of bleeding of arc annular slab department and annular slab upside department, make the evacuation effect more even, reduced quartz crucible in the possibility of producing the microbubble of production, be favorable to improving quartz crucible's quality and yield.

Optionally, the first air pumping holes and the second air pumping holes on the annular plate are staggered along the axial direction of the annular plate.

Through adopting above-mentioned technical scheme, make the vacuum hole distribution on the annular plate more even, further improved the evacuation effect of bleed pipeline in annular plate department, reduced quartz crucible's the possibility of producing the microbubble in production process, be favorable to improving quartz crucible's quality and yield.

Optionally, the first air pumping hole and the second air pumping hole are both composed of a counter bore and a through hole, the counter bore and the through hole are coaxially arranged, the counter bore is formed in the inner wall of the pot body, the through hole is formed in the outer wall of the pot body, the counter bore is communicated with the through hole, and the aperture of the counter bore is larger than that of the through hole.

Through adopting above-mentioned technical scheme, be favorable to improving the area of action of pipeline of bleeding to the pot body inner wall at the evacuation in-process pipeline of bleeding, improve the evacuation effect, the through-hole of less aperture also can block the possibility that quartz sand overflowed from the through-hole to a certain extent, has reduced because quartz sand runs off the possibility that makes quartz crucible's outer wall produce the microbubble, has also reduced quartz sand and has got into the pipeline of bleeding and stop up the pipeline of bleeding's possibility, is favorable to improving quartz crucible's quality and yield and guarantee pipeline of bleeding's steady operation.

Optionally, a first sand control net is arranged in the counter bore, and the first sand control net is abutted with the inner wall of the counter bore.

Through adopting above-mentioned technical scheme, set up first sand control net and can also block effectively that quartz sand inhales the evacuation intracavity from the vacuum hole when guaranteeing the normal operating of bleed pipeline, guaranteed the stability and the homogeneity of the internal vacuum of pot, further improve quartz crucible's quality and yield.

Optionally, a second sand control net is sleeved outside the pot body.

Through adopting above-mentioned technical scheme, when quartz sand wears out in the first sand control net, the second sand control net can further block quartz sand, has reduced the possibility that the quartz sand was inhaled the evacuation chamber after passing first sand control net, has guaranteed the stability and the homogeneity of the internal vacuum of pot, further improves quartz crucible's quality and yield.

Optionally, the water jacket is annularly arranged.

Through adopting above-mentioned technical scheme, make the shape of water jacket and pot body adapt more, the periphery wall of water jacket keeps unanimous to pot body annular plate's distance, is favorable to improving homogeneity and stability when evacuating the process.

Optionally, the water jacket is provided with a mounting hole corresponding to the connecting flange, and the water jacket is detachably connected with the connecting flange.

Through adopting above-mentioned technical scheme, water jacket and pot body detachable connection, after the shaping of the quartz crucible in the pot body, can in time dismantle the pot body from the water jacket in and carry out the drawing of patterns processing, connect next pot body on the water jacket afterwards, be favorable to improving production efficiency, reduction in production cost.

Optionally, the first sand control net and the second sand control net are both made of stainless steel.

When the quartz sand is sucked out from the inner wall of the pot body, the first sand control net and the second sand control net can be impacted, by adopting the technical scheme, the strength of the first sand control net and the second sand control net is enhanced, the service lives of the first sand control net and the second sand control net are prolonged, and the labor cost for replacing the first sand control net and the second sand control net in the later period is reduced.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. compared with the second air suction holes on the lower sides of the bottom plate and the annular plate, the first air suction holes on the upper sides of the arc-shaped annular plate and the annular plate are more compact, the influence of lower temperature on the annular plate and longer distance from the air suction pipe is reduced, the influence of air flow impact in the melting process of the crucible, which causes fine quartz sand to be converged on the arc-shaped annular plate, is reduced, the air suction effect of the air suction pipe on the arc-shaped annular plate and the upper sides of the annular plate is facilitated to be compensated, the vacuumizing effect is more uniform, the possibility of generating microbubbles in the production process of the quartz crucible is reduced, and the quality and the yield of the quartz crucible are facilitated to be improved.

2. According to the utility model, the plurality of first air suction holes and the plurality of second air suction holes on the annular plate are staggered along the axial direction of the annular plate, so that the vacuum holes are distributed more uniformly, the vacuumizing effect of the air suction pipeline at the annular plate is further improved, the possibility of generating micro bubbles in the production process of the quartz crucible is reduced, and the quality and the yield of the quartz crucible are improved.

3. The counter bore with larger aperture is beneficial to improving the action area of the air extraction pipeline on the inner wall of the pot body in the vacuumizing process, improving the vacuumizing effect, the through hole with smaller aperture can also block the possibility that quartz sand overflows from the through hole to a certain extent, the possibility that micro bubbles are generated on the outer wall of the quartz crucible due to the loss of quartz sand is reduced, the possibility that quartz sand enters the air extraction pipeline to block the air extraction pipeline is also reduced, and the quality and the yield of the quartz crucible are improved, and the stable operation of the air extraction pipeline is ensured.

Drawings

FIG. 1 is a schematic perspective view of a quartz crucible forming mold of the present utility model after removing a first sand control screen.

FIG. 2 is a schematic cross-sectional view of a quartz crucible forming mold of the present utility model after removal of a first sand control screen.

FIG. 3 is a schematic representation of the location of a first sand control screen.

In the figure, 1, a pot body; 11. a bottom plate; 12. an arc-shaped annular plate; 13. an annular plate; 14. a connecting flange; 2. a water jacket; 21. a mounting hole; 3. pumping the vacuum cavity; 4. an air extraction pipeline; 5. a vacuum hole; 51. a first air extraction hole; 511. countersink; 512. a through hole; 52. a second air-extracting hole; 6. a first sand control screen; 7. a second sand control screen; 8. and a sealing gasket.

Detailed Description

The present utility model will be described in further detail with reference to fig. 1 to 3.

The utility model provides a quartz crucible forming die, refer to fig. 1 and 2, including the pot body 1 and water jacket 2, water jacket 2 annular sets up and overlaps and establish outside the pot body 1, the pot body 1 is including bottom plate 11, arc annular slab 12, annular slab 13 and flange 14 of fixed connection in proper order, set up the mounting hole 21 that corresponds with flange 14 on the water jacket 2, establish pot body 1 cover in water jacket 2 and with flange hole and the detachable connection of passing through the screw after aligning with mounting hole 21, form evacuation chamber 3 between pot body 1 and the water jacket 2, the bottom intercommunication of water jacket 2 has the pumping pipeline 4 that is used for the evacuation, be provided with sealed pad 8 between pumping pipeline 4 and the water jacket 2, in order to improve the evacuation effect, pumping pipeline 4 is driven by the motor.

Referring to fig. 1 and 2, after the preliminary molding of the quartz crucible, the quartz crucible and the mold are pushed to a melting area together for melting, a heat insulation plate with a graphite electrode in the melting area is covered on the connecting flange 14, and a round angle corresponding to the heat insulation plate is formed on the inner wall of the upper end of the connecting flange 14, so that the heat insulation effect is improved, and the melting cost is reduced.

Referring to fig. 1 and 2, a plurality of vacuum holes 5 are formed in the base plate 11, the arc-shaped annular plate 12 and the annular plate 13, the plurality of vacuum holes 5 are arranged around the base plate 11, the arc-shaped annular plate 12 and the annular plate 13, the vacuum holes 5 comprise first air pumping holes 51 and second air pumping holes 52, the plurality of first air pumping holes 51 are arranged around the arc-shaped annular plate 12 and the upper side of the annular plate 13, the plurality of second air pumping holes 52 are arranged around the base plate 11 and the lower side of the annular plate 13, and the distance between the plurality of adjacent first air pumping holes 51 is smaller than the distance between the plurality of adjacent second air pumping holes 52. As a preferable mode in the embodiment of the present utility model, the distance between the adjacent first air extraction holes 51 in the present embodiment is 20mm, the distance between the second air extraction holes 52 is 50mm to 80mm, and specifically, the distance between the adjacent second air extraction holes 52 in the present embodiment is 50mm.

Referring to fig. 1 and 2, since the temperature at each height in the pot body 1 and the distance from the vacuumizing port are both in a certain gradient in the melting process, the vacuumizing effect at each position of the pot body 1 is different, the more compact first vacuumizing hole 51 is arranged at the upper side of the annular plate 13 to compensate for the problem of poor vacuum effect caused by the fact that the annular plate 13 is too far away from the vacuumizing pipeline 4 and the temperature is lower, the first vacuumizing hole 51 is arranged on the arc-shaped annular plate 12 to compensate for the problem of poor vacuum effect caused by the fact that the quartz sand at the arc-shaped annular plate 12 is thicker due to the fact that the quartz sand is impacted by air flow generated in the melting process, the vacuumizing effect is more uniform, the possibility of generating microbubbles in the production process of the quartz crucible is reduced, and the quality and the yield of the quartz crucible are improved.

Referring to fig. 2 and 3, a plurality of first air pumping holes 51 and a plurality of second air pumping holes 52 on the annular plate 13 are staggered along the axial direction of the annular plate 13, so that the first air pumping holes 51 and the second air pumping holes 52 are distributed more uniformly, the vacuumizing effect of the air pumping pipeline 4 at the annular plate 13 is improved, the first air pumping holes 51 and the second air pumping holes 52 are formed by counter bores 511 and through holes 512, the counter bores 511 are formed in the inner wall of the pot body 1, the through holes 512 are formed in the outer wall of the pot body 1, the counter bores 511, the through holes 512 and the vacuumizing cavity 3 are sequentially communicated, and the aperture of the counter bores 511 is larger than that of the through holes 512 so as to improve the acting area of the air pumping pipeline 4 on the inner wall of the pot body 1 in the vacuumizing process and enhance the vacuumizing effect.

Referring to fig. 2 and 3, a first sand control net 6 is disposed in the counter bore 511, the first sand control net 6 is abutted against the inner wall of the counter bore 511, the mesh number of the first sand control net 6 is 120-140, specifically, in this embodiment, the mesh number of the first sand control net 6 is 120, a second sand control net 7 is further sleeved outside the pot body 1, quartz sand can be effectively prevented from being sucked into the vacuumizing cavity 3 from the vacuum holes 5 through the first sand control net 6 and the second sand control net 7, stability and uniformity of vacuum degree in the pot body 1 are guaranteed, and in order to prolong service lives of the first sand control net 6 and the second sand control net 7, the first sand control net 6 and the second sand control net 7 are made of stainless steel materials.

The implementation principle of the embodiment of the utility model is as follows: the pot body 1 is arranged in the water jacket 2, quartz sand is injected into the pot body 1, then extrusion molding is carried out, fusion is carried out to form a final quartz crucible, in the process of producing the quartz crucible, the air suction pipeline 4 is always in a working state, negative pressure is formed in the vacuum suction cavity 3, the gas in the quartz crucible is removed to the greatest extent, the pot body 1 is provided with vacuum holes 5 matched with the air suction pipeline 4, the upper end of the annular plate 13 and the first air suction holes 51 which are more densely arranged at the arc-shaped annular plate 12 enable the vacuum suction effect to be more stable and uniform, the possibility of generating microbubbles in the production process of the quartz crucible is reduced, the first sand prevention net 6 arranged in the counter bore 511 and the second sand prevention net 7 arranged at the outer end of the pot body 1 can effectively prevent the quartz sand from being sucked into the vacuum suction cavity 3 from the vacuum holes 5 in the air suction process, the stability and uniformity of the vacuum degree are further improved, and the quality and the yield of the quartz crucible are improved.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The quartz crucible forming die is characterized by comprising a pot body (1) and a water jacket (2), wherein the water jacket (2) is sleeved outside the pot body (1), a vacuum pumping cavity (3) is formed between the pot body (1) and the water jacket (2), an air pumping pipeline (4) for vacuumizing is communicated with the bottom end of the water jacket (2), and the pot body (1) comprises a bottom plate (11), an arc-shaped annular plate (12), an annular plate (13) and a connecting flange (14) which are fixedly connected in sequence;

the bottom plate (11) the arc annular plate (12) with all offered a plurality of vacuum holes (5) on annular plate (13), vacuum holes (5) are including first gas vent (51) and second gas vent (52), and a plurality of first gas vent (51) encircle and set up on the arc annular plate (12) with annular plate (13) upside, a plurality of second gas vent (52) encircle and set up on bottom plate (11) with annular plate (13) downside, a plurality of adjacent interval between first gas vent (51) is less than a plurality of adjacent interval between second gas vent (52).

2. The quartz crucible forming mold according to claim 1, wherein the plurality of first gas-pumping holes (51) and the plurality of second gas-pumping holes (52) on the annular plate (13) are arranged in a staggered manner along the axial direction of the annular plate (13).

3. The quartz crucible forming die according to claim 1 or 2, wherein the first air suction hole (51) and the second air suction hole (52) are composed of a counter bore (511) and a through hole (512), the counter bore (511) and the through hole (512) are coaxially arranged, the counter bore (511) is formed in the inner wall of the pot body (1), the through hole (512) is formed in the outer wall of the pot body (1), the counter bore (511) is communicated with the through hole (512), and the aperture of the counter bore (511) is larger than that of the through hole (512).

4. A quartz crucible forming mold according to claim 3, characterized in that a first sand control net (6) is arranged in the counter bore (511), and the first sand control net (6) is abutted with the inner wall of the counter bore (511).

5. The quartz crucible forming mold according to claim 4, wherein a second sand control net (7) is further sleeved outside the pot body (1).

6. A quartz crucible forming mold according to claim 1, characterized in that the water jacket (2) is annularly arranged.

7. A quartz crucible forming mold according to claim 1 or 6, characterized in that the water jacket (2) is provided with a mounting hole (21) corresponding to the connecting flange (14), and the water jacket (2) is detachably connected with the connecting flange (14).

8. The quartz crucible forming mold according to claim 5, wherein the first sand control net (6) and the second sand control net (7) are each made of stainless steel material.