CN111441082A - Large-size sapphire crystal growth furnace based on automatic control system - Google Patents

Abstract

The invention relates to the technical field of gemstone production, in particular to a large-size sapphire crystal growth furnace based on an automatic control system, comprising a furnace body and a barrel, an oxygen pipe is connected to the barrel, and a beating mechanism is arranged on the barrel, so that the There is a screen in the barrel, the bottom of the barrel is communicated with the mixing chamber, the side wall of the mixing chamber is communicated with a hydrogen pipe, the bottom of the mixing chamber is communicated with the furnace body, and the bottom of the furnace body is provided with a hydrogen pipe. A descending mechanism, a crystal rod is installed on the descending mechanism, the crystal rod can extend into the furnace body, a first guide hole and a second guide hole are horizontally opened on the barrel, and the first guide hole is slidably installed There is a first separator, the present invention improves the uniformity of powder falling into the mixing chamber by partially separating the powder in the barrel, preventing the imbalance of the proportion of local main materials and auxiliary materials in the barrel, and making the produced sapphire color The degree of uniformity is uniform, the error is small, and the overall aesthetics and production quality are improved.

Description

Large size sapphire crystal growth furnace based on automatic control system

technical field

The invention relates to the technical field of gem production, in particular to a large-size sapphire crystal growth furnace based on an automatic control system.

Background technique

With the rapid development of science and technology, the market demand for sapphire crystal substrate materials will grow rapidly. At present, the growth technologies of sapphire crystal mainly include flame method, pulling method, guided mode method, heat exchange method, bubble growth method, temperature gradient method and descending method. The sapphire crystal produced by the flame fusion method has the characteristics of low cost, mature method and wide adaptability, and the produced sapphire is suitable for lighting, interior decoration and glass decorations.

As shown in FIG. 1 , the existing flame-melting method for producing sapphire has a hammering mechanism 7 that beats the barrel at a certain frequency to generate vibration, so that the powder in the barrel continuously falls into the growth furnace through the screen 6 for production. The raw material powder of sapphire is mainly alumina, supplemented by iron and titanium for coloring. Due to the difference in particle size between the auxiliary material and the main material, the smaller particle size of the auxiliary material during the working process of the hammering mechanism 7 will be. Move down along the gap of the main material with larger particle size, which causes most of the auxiliary materials to gather at the bottom of the powder, the proportion of the auxiliary material at the bottom of the powder becomes larger, and the proportion of the auxiliary material at the top of the powder becomes smaller, resulting in the flame melting of the powder at the bottom. There is a certain color difference between the final crystal and the powder crystal on the top, which affects the aesthetics when used as a decorative material.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a large-size sapphire crystal growth furnace based on an automatic control system in order to solve the shortcomings in the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions:

A large-size sapphire crystal growth furnace based on an automatic control system is designed, including a furnace body and a barrel, an oxygen pipe is connected to the barrel, a beating mechanism is arranged on the barrel, and a screen is arranged in the barrel, The bottom of the barrel is communicated with the mixing chamber, the side wall of the mixing chamber is communicated with a hydrogen pipe, the bottom of the mixing chamber is communicated with the furnace body, and the bottom of the furnace body is provided with a descending mechanism, which is installed on the descending mechanism There is a crystal rod, the crystal rod can extend into the furnace body, a first guide hole and a second guide hole are horizontally opened on the barrel, a first baffle is slidably installed in the first guide hole, and the first guide hole is slidably installed in the first guide hole. A first rack is installed horizontally on a partition plate, the upper and lower sides of the first rack are provided with gear blocks, the first rack can be inserted into the first guide hole, the A second partition plate is slidably installed in the second guide hole, a second rack is horizontally installed on the second partition plate, the second rack can be inserted into the second guide hole, and the second rack is installed in the second guide hole. The bottom surface of the partition is provided with a reset structure, a steering gear is installed on the barrel between the first rack and the second rack, and the first rack and the second rack are meshed with each other. On the steering gear, the first rack and the beating mechanism are connected by a transmission structure.

Preferably, the reset structure includes a guide rod, a sliding sleeve and a reset spring, the guide rod is horizontally installed in the barrel below the second partition plate, and the sliding sleeve is welded on the bottom surface of the second partition plate. On the side, the sliding sleeve is slidably connected to the guide rod, and the return spring is sleeved on the guide rod.

Preferably, the return spring is always in a compressed state.

Preferably, the transmission structure includes a belt and an incomplete gear, the incomplete gear is rotatably mounted on the side wall of the barrel, the belt is connected to the beating mechanism and the incomplete gear, and the beating The mechanism may drive a partial gear to rotate through the belt, and the partial gear may be engaged on the first rack.

Preferably, a plurality of rotating shafts are rotatably installed inside the barrel above the first partition plate, a stirring paddle is installed on the rotating shaft, and a driven gear is installed on the rotating shaft, and the driven gear can meshed with the first rack.

Preferably, both the first guide hole and the second guide hole are lined with sealing plugs.

The large-size sapphire crystal growth furnace based on the automatic control system proposed by the present invention has the beneficial effects that the present invention improves the uniformity of the powder falling into the mixing chamber by partially separating the powder in the barrel, and prevents the powder in the barrel. The proportion of local main materials and auxiliary materials is unbalanced, so that the produced sapphire has uniform chromaticity, small error, and improves the overall aesthetics and production quality.

Description of drawings

FIG. 1 is a diagram of an existing flame-melting method for producing sapphire.

FIG. 2 is a front view of the large-size sapphire crystal growth furnace based on the automatic control system proposed by the present invention.

FIG. 3 is a side view of the large-size sapphire crystal growth furnace based on the automatic control system proposed by the present invention.

FIG. 4 is a schematic structural diagram of the barrel of the large-size sapphire crystal growth furnace based on the automatic control system proposed by the present invention.

FIG. 5 is an enlarged view of position A of the large-size sapphire crystal growth furnace based on the automatic control system proposed by the present invention.

In the figure: descending mechanism 1, crystallizing rod 2, crystal 3, furnace body 4, mixing chamber 5, screen 6, beating mechanism 7, eccentric block 701, small hammer 702, barrel 8, first guide hole 801, second Guide hole 802, first partition 9, first rack 10, second partition 11, second rack 12, steering gear 13, incomplete gear 14, belt 15, rotating shaft 16, driven gear 17, stirring paddle 18. Guide rod 19, sliding sleeve 20, return spring 21, observation window 22.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

1-5, a large-size sapphire crystal growth furnace based on an automatic control system includes a furnace body 4 and a barrel 8, an oxygen pipe is communicated on the barrel 8, and a beating mechanism 7 is provided on the barrel 8, The barrel 8 is provided with a screen 6, the bottom of the barrel 8 is communicated with the mixing chamber 5, the side wall of the mixing chamber 5 is communicated with a hydrogen pipe, and the bottom of the mixing chamber 5 is communicated with the furnace body 4. Inside, the bottom of the furnace body 4 is provided with a descending mechanism 1, and a crystallizing rod 2 is installed on the descending mechanism 1, and the crystallizing rod 2 can extend into the furnace body 4. The working principle of FIG. 1 is briefly described as follows: The hammering mechanism 7 works, that is, the eccentric block 701 is driven to rotate clockwise. According to the rotation speed of the eccentric block 701, the small hammer 702 beats the material cylinder at a certain frequency to generate vibration, so that the powder in the material cylinder continuously passes through the screen 6, and at the same time, the oxygen pipe The oxygen sent in also helps to send the powder down;

The hydrogen enters through the hydrogen pipe, and is mixed and combusted with oxygen during mixing 5. The powder is melted by a high temperature flame and falls on a crystal rod 2 with a lower temperature to form crystals. The furnace body 4 is provided with an observation window 22 to observe the crystallization condition. In order to keep the crystal layer of the crystal at the same level successively in the furnace, during the crystallization process of the crystal 3, a descending mechanism 1 is set at the same time, and the crystal rod 2 is slowly moved down.

A first guide hole 801 and a second guide hole 802 are horizontally opened on the barrel 8. The first guide hole 801 and the second guide hole 802 are both lined with sealing plugs 22, and the first guide hole 802 is lined with a sealing plug 22. A first partition plate 9 is slidably installed in 801, a first rack 10 is installed horizontally on the first partition plate 9, and gear blocks are provided on the upper and lower sides of the first rack 10. A rack 10 can be inserted into the first guide hole 801 , a second partition plate 11 is slidably installed in the second guide hole 802 , and a second rack 12 is horizontally installed on the second partition plate 11 , the second rack 12 can be inserted into the second guide hole 802, the bottom surface of the second partition 11 is provided with a reset structure, the reset structure includes a guide rod 19, a sliding sleeve 20 and a reset spring 21 , the guide rod 19 is horizontally installed in the barrel 8 below the second partition plate 11, the sliding sleeve 20 is welded on the bottom side of the second partition plate 11, and the sliding sleeve 20 is slidably connected to On the guide rod 19, the return spring 21 is sleeved on the guide rod 19, the return spring 21 is always in a compressed state, and the space between the first rack 10 and the second rack 12 is A steering gear 13 is installed on the barrel 8 , the first rack 10 and the second rack 12 are meshed with the steering gear 13 , and the first rack 10 is connected to the beating mechanism 7 . They are connected by a transmission structure. The transmission structure includes a belt 15 and an incomplete gear 14. The incomplete gear 14 is rotatably installed on the side wall of the barrel 8, and the belt 15 is connected to the beating mechanism. 7 and the incomplete gear 14 , the beating mechanism 7 can drive the incomplete gear 14 to rotate through the belt 15 , and the incomplete gear 14 can be engaged with the first rack 10 . A plurality of rotating shafts 16 are rotatably installed inside the barrel 8 above the first partition plate 9 , a stirring paddle 18 is installed on the rotating shafts 16 , and a driven gear 17 is installed on the rotating shaft 16 . The driven gear 17 can be meshed with the first rack 10 . When the eccentric block 701 is working, it will drive the incomplete gear 14 to rotate through the belt 15, and the incomplete gear 14 drives the first rack 10 to move to the left, and the powder in the barrel 8 can be divided into two upper and lower parts by the first partition 9. Part of the powder, and the first partition 9 separates the upper and lower parts of the powder with the same uniformity, and part of the powder under the first partition 9 is divided into two parts by the second partition 11. The uniformity of the material is also the same. When the small hammer 702 hammers the barrel 8, the first partition 9 separates the barrel 8, the second partition 11 is opened, and the powder under the second partition 11 will fall into the mixing chamber. 5, the powder between the second partition 11 and the first partition 9 falls below the second partition 11, the incomplete gear 14 continues to rotate, the first rack 10 is separated from the incomplete gear 14, and in the reset structure The middle return spring 21 drives the second partition 1 to separate the powder again, the second rack 12 drives the steering gear 13 to work, the steering gear 13 drives the first rack 10 to move to the right, the first partition 9 reopens, and the first The powder above the partition plate 9 falls on the second partition plate 11 again. When the first rack 10 moves horizontally, it will drive the driven gear 17 to work, and the driven gear will drive the stirring paddle 18 on the rotating shaft 16 to work. The powder above a partition 9 is stirred to improve the uniformity.

By partially separating the powder in the barrel 8, the present invention improves the uniformity of the powder falling into the mixing chamber 5, prevents the partial imbalance of the proportion of the main material and the auxiliary material in the barrel 8, and makes the produced sapphire even in color. , the error is small, and the overall aesthetics and production quality are improved.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (6)

1. Large-size sapphire crystal growth furnace based on automatic control system, comprising a furnace body (4) and a charging barrel (8), wherein the charging barrel (8) is communicated with an oxygen pipe, the charging barrel (8) is provided with a hammering mechanism (7), the charging barrel (8) is internally provided with a screen (6), the bottom of the charging barrel (8) is communicated with a mixing chamber (5), the side wall of the mixing chamber (5) is communicated with a hydrogen pipe, the bottom of the mixing chamber (5) is communicated with the inside of the furnace body (4), the bottom of the furnace body (4) is provided with a descending mechanism (1), the descending mechanism (1) is provided with a crystallization rod (2), the crystallization rod (2) can extend into the furnace body (4), the large-size sapphire crystal growth furnace is characterized in that the charging barrel (8) is horizontally provided with a first guide hole (801) and a second guide hole (802), and a first partition plate (9) is arranged in the first guide hole (801) in a sliding manner, a first rack (10) is horizontally arranged on the first clapboard (9), the upper side and the lower side of the first rack (10) are both provided with tooth blocks, the first rack (10) can be inserted into the first guide hole (801), a second clapboard (11) is arranged in the second guide hole (802) in a sliding way, a second rack (12) is horizontally arranged on the second clapboard (11), the second rack (12) can be inserted into the second guide hole (802), a reset structure is arranged on the bottom surface of the second clapboard (11), a steering gear (13) is arranged on the charging barrel (8) between the first rack (10) and the second rack (12), the first rack (10) and the second rack (12) are both engaged on the steering gear (13), the first rack (10) is connected with the hammering mechanism (7) through a transmission structure.

2. The large-size sapphire crystal growth furnace based on the automatic control system according to claim 1, wherein the reset structure comprises a guide rod (19), a sliding sleeve (20) and a reset spring (21), the guide rod (19) is horizontally installed in the charging barrel (8) below the second partition plate (11), the sliding sleeve (20) is welded on one side of the bottom surface of the second partition plate (11), the sliding sleeve (20) is slidably connected to the guide rod (19), and the reset spring (21) is sleeved on the guide rod (19).

3. The automated control system based large-size sapphire crystal growth furnace of claim 1, wherein the return spring (21) is always in compression.

4. The large-size sapphire crystal growth furnace based on the automatic control system according to claim 1, wherein the transmission structure comprises a belt (15) and a non-complete gear (14), the non-complete gear (14) is rotatably mounted on the side wall of the charging barrel (8), the belt (15) is connected to the hammering mechanism (7) and the non-complete gear (14), the hammering mechanism (7) can drive the non-complete gear (14) to rotate through the belt (15), and the non-complete gear (14) can be meshed on the first rack (10).

5. The large-size sapphire crystal growth furnace based on the automatic control system according to claim 1, wherein a plurality of rotating shafts (16) are rotatably mounted inside the charging barrel (8) above the first partition plate (9), stirring paddles (18) are mounted on the rotating shafts (16), driven gears (17) are mounted on the rotating shafts (16), and the driven gears (17) can be meshed on the first racks (10).

6. The automated control system-based large-size sapphire crystal growth furnace of claim 1, wherein the first guide hole (801) and the second guide hole (802) are lined with a sealing plug (22).

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