Co-production system for preparing quartz and nano silicon dioxide powder

Abstract

The utility model discloses a co-production system for preparing quartz and nano silicon dioxide powder, which relates to the technical field of quartz material preparation and comprises deposition equipment, a powder collector and sintering equipment. The deposition equipment is used for performing a vapor deposition process to deposit silicon dioxide powder on the target rod to form a quartz rod loose body; a powder outlet is formed in the deposition equipment; the powder collector is communicated with the powder outlet; and the sintering equipment is used for sintering the quartz rod loose body to obtain the quartz rod. According to the utility model, efficiency can be improved and cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to quartz material preparation technical field especially is a kind of preparation quartz, nano silica powder's co-production system. BACKGROUND

[0002] Current mainstream quartz material two-step synthesis process mainly uses gas phase axial deposition method or outer gas phase deposition method as core preparation technology.The process system mainly includes two key stages: firstly, porous quartz silica powder preform rod is constructed on the surface of rotating target stick through precisely controlled chemical vapor deposition process, then glass sintering treatment is carried out under high-temperature vacuum or specific protective atmosphere, and finally high-purity quartz material with specific crystal structure is obtained.

[0003] In the implementation process of the two deposition processes, in order to maintain the ideal gas phase transmission kinetics environment and accurately control the deposition rate, the system needs to continuously carry out gas suction to maintain the dynamic balance in the reaction cavity. This process characteristic directly leads to a large amount of non-effective deposition of raw material gaseous precursor discharged from the reaction system with gas flow, causing significant raw material loss problem. Specifically, due to the geometric limitation of axial deposition, the raw material utilization rate is maintained at about 45%; while the outer gas phase deposition method using radial deposition mode improves the raw material utilization rate to 55% by optimizing the flow field distribution, but there is still a large space for improvement. This process loss not only directly pushes up the raw material cost, but also increases the load of waste gas treatment system, ultimately leading to high comprehensive production cost of synthetic quartz material, which becomes a key factor restricting the industrial scale development. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of preparation quartz, nano silica powder's co-production system to solve the problems existing in the prior art, improve efficiency, reduce cost.

[0005] To achieve the above object, the utility model provides the following scheme:

[0006] The utility model provides a kind of preparation quartz, nano silica powder's co-production system, comprising: deposition equipment, powder collector and sintering equipment.Deposition equipment is used to carry out gas deposition process to deposit silica powder on target stick and form quartz stick loose body;The powder outlet is structured on the deposition equipment;The powder collector is communicated with the powder outlet;Sintering equipment is used to carry out sintering treatment to the quartz stick loose body to obtain quartz stick.

[0007] Preferably, the powder collector is communicated with the powder outlet by conveying pipeline, and the conveying pipeline is of quartz material.

[0008] Preferably, the deposition equipment has a reaction chamber, the vapor deposition process is carried out in the reaction chamber, the top of the reaction chamber is provided with a vacuum hood, the powder outlet is provided on the vacuum hood, and the vacuum hood is made of quartz material.

[0009] Preferably, the system further includes an exhaust system and an exhaust gas treatment system. The inlet of the exhaust system is connected to the powder collector, and the outlet of the exhaust system is connected to the exhaust gas treatment system. The exhaust system is used to draw powder that has not been collected by the powder collector into the exhaust gas treatment system.

[0010] Preferably, the deposition equipment is used for external vapor deposition processes.

[0011] Preferably, the torch assembly in the deposition apparatus includes multiple torches arranged in a row along a direction parallel to the target bar. The torch assembly is mounted on a translation device, which can drive the torch assembly to reciprocate along a direction parallel to the target bar.

[0012] Preferably, the torch assembly is positioned directly below or to the side of the target rod.

[0013] Preferably, it also includes a lifting device for driving the torch assembly to rise and fall, and a detection device for detecting the diameter of the porous quartz rod. When the detection device detects that the diameter of the porous quartz rod reaches a set value, it controls the lifting device to drive the torch assembly to fall so as to ensure that the distance between the torch assembly and the target rod is within the set range.

[0014] Preferably, the powder collector includes a first collection structure and a second collection structure. The first collection structure is provided with an inlet and an exhaust port. The inlet is connected to the powder outlet, and the exhaust port is connected to the inlet of the exhaust system. A collection component is provided in the collection cavity of the first collection structure. The collection component is oscillating. A storage cavity is constructed in the second collection structure. The storage cavity is located below the first collection structure and is connected to the collection cavity.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] The apparatus and method provided by this invention can simultaneously produce porous quartz rods and high-purity nano-silica powder. The porous quartz rods can then be processed into quartz rod products through a vacuum sintering process. This achieves the goal of simultaneously preparing quartz rods and high-purity nano-silica powder, improving production efficiency. Furthermore, since the raw material for the high-purity nano-silica powder comes from silica powder that was not deposited on the surface of the target rod during the vapor deposition process, the purpose of waste recycling is achieved, saving raw materials and thus reducing preparation costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0018] Figure 1 A schematic diagram of the deposition equipment and powder collector in the co-production system for preparing quartz and nano-silica powder provided by this utility model;

[0019] Figure 2 A schematic diagram of the sintering equipment in the co-production system for preparing quartz and nano-silica powder provided by this utility model;

[0020] Figure 3 This is an isometric view of the powder collector in the first method;

[0021] Figure 4 This is a front view of the powder collector in the first method;

[0022] Figure 5 This is a cross-sectional view of the powder collector in the first method;

[0023] Figure 6 This is a schematic diagram of the powder collector's collecting plate, rotating shaft, and driving structure in the first method.

[0024] Figure 7 This is an isometric view of the powder collector in the second method;

[0025] Figure 8 This is a front view of the powder collector in the second method;

[0026] Figure 9 This is a cross-sectional view of the powder collector in the second method;

[0027] Figure 10 This is a schematic diagram of the powder collector's collecting plate and rotating shaft in the second method;

[0028] Figure 11 This diagram illustrates the placement of a pressure sensor when detecting changes in the weight of a porous quartz rod.

[0029] In the picture:

[0030] 100-Powder collector; 200-Deposition equipment; 300-Sintering equipment; 1-First collection structure; 2-Upper collection chamber; 3-Lower collection chamber; 4-Collection plate; 5-Valve; 6-Second collection structure; 7-Exhaust baffle; 8-Inlet; 9-Exhaust port; 10-Rotating shaft; 11-Connecting rod; 12-Swing rod; 13-Exhaust hood; 14-Conveying pipe; 15-Blowtorch; 16-Reaction chamber; 17-Transfer device; 18-Quartz rod loose body; 19-Working head; 20-Support plate; 21-Support body; 22-Pressure sensor; 23-Drive assembly. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] In existing quartz rod preparation processes, the excess silica powder produced is polluted when processed by environmental protection equipment, failing to achieve the high purity required for corresponding applications. The current high-purity nano-silica market is disconnected from traditional production processes. Therefore, this application provides a co-production system and method for preparing quartz and nano-silica powder, simultaneously producing high-purity quartz and collecting pure nano-silica powder, thus solving the common problems of existing technologies: "single product, high cost, and low efficiency."

[0034] The following is combined with Figures 1 to 11 The following describes embodiments of the present invention.

[0035] Example 1

[0036] This invention provides a co-production system for preparing quartz and nano-silica powder, comprising: a deposition apparatus 200, a powder collector 100, and a sintering apparatus 300. The deposition apparatus 200 is used for a vapor deposition process to deposit silica powder onto a target rod to form a porous quartz rod 18; the deposition apparatus 200 is equipped with a powder outlet; the powder collector 100 is connected to the powder outlet; the sintering apparatus 300 is used to sinter the porous quartz rod 18 to obtain a quartz rod, preferably by vacuum sintering.

[0037] The device provided by this invention can simultaneously produce quartz rod porous body 18 and high-purity nano silica powder. Then, the quartz rod porous body 18 can be processed into quartz rod products through vacuum sintering. This achieves the purpose of simultaneously preparing quartz rods and high-purity nano silica powder, improving production efficiency. In addition, since the raw material of high-purity nano silica powder comes from silica powder that was not deposited on the surface of the target rod in the vapor deposition process, the purpose of waste recycling is achieved, saving raw materials and thus reducing the preparation cost.

[0038] In some embodiments, the powder collector 100 is connected to the powder outlet via a conveying pipe 14, which is made of quartz. Existing pipes made of metal are susceptible to corrosion due to the formation of HCl and H₂O during the hydrolysis reaction of the deposited material. The combination of these two substances produces hydrochloric acid, which corrodes the metal, causing impurities such as rust to mix into the collected silica powder and affecting its purity. In this embodiment, the conveying pipe 14 is made of quartz, which is not corroded by silica powder. Compared to metal pipes, this embodiment avoids the contamination of the collected product by silica corrosion of the metal.

[0039] In some embodiments, the deposition apparatus 200 is configured with a reaction chamber 16, the vapor deposition process is performed in the reaction chamber 16, the top of the reaction chamber 16 is provided with a vacuum hood 13, the powder outlet is provided on the vacuum hood 13, and the vacuum hood 13 is made of quartz material.

[0040] The air inlet area of ​​the exhaust hood 13 provided in this embodiment is much larger than the cross-sectional area of ​​the delivery pipe 14. This allows the gas in the reaction chamber 16 to be drawn into the exhaust hood 13 more evenly, thereby making the airflow in the area where the target rod is located more uniform and improving the uniformity of deposition.

[0041] In some embodiments, the present invention further includes an exhaust system and an exhaust gas treatment system. The inlet of the exhaust system is connected to the powder collector 100, and the outlet of the exhaust system is connected to the exhaust gas treatment system. The exhaust system is used to draw powder that has not been collected by the powder collector 100 to the exhaust gas treatment system.

[0042] In this embodiment, the ventilation system can serve as the power source for the suction of the deposition device 200 to create the required negative pressure state within the reaction chamber 16. For example, the negative pressure value is usually maintained between -20Pa and -5Pa. This also ensures the purity of the silica powder drawn into the powder collector 100 and prevents it from coming into contact with metal components.

[0043] In some embodiments, the deposition apparatus 200 is used for external vapor deposition processes, such as... Figure 1 The image shows a horizontal external gas phase device.

[0044] In this embodiment, the deposition equipment 200 uses a stable heat source such as an oxyhydrogen flame or a methane flame. During operation, gaseous halides (typically silicon tetrachloride, SiCl4) are precisely carried and transported to the flame region. Under the high temperature of the flame, the gaseous halides rapidly undergo hydrolysis, generating quartz (SiO2) particulate dust. Through the combined effects of thermophoresis and other physical processes, a portion of this dust gradually deposits layer by layer onto the outer surface of the "mother rod," which is the target rod in the above embodiment, in a very slow and orderly manner. This deposition process is repeated until the quartz deposited on the outer surface of the "mother rod" reaches a predetermined size, at which point the deposition operation is officially completed.

[0045] In some embodiments, the torch assembly in the deposition apparatus 200 includes a plurality of torches 15 arranged in a row along a direction parallel to the target bar. The torch assembly is mounted on a translation device 17, which can drive the torch assembly to reciprocate along a direction parallel to the target bar.

[0046] This embodiment is designed to ensure comprehensive and uniform coverage of the deposition area.

[0047] In the deposition equipment 200, the target rod is securely fixed to two synchronously rotating working heads 19 using specialized high-precision tooling. Driven by a high-performance drive unit, these two working heads 19 achieve highly synchronized rotational motion, thereby causing the target rod to rotate stably and uniformly. With the continuous rotation of the target rod and the reciprocating motion of the torch 15, the generated powder can be uniformly and precisely deposited on the surface of the target rod.

[0048] In some embodiments, the blowtorch assembly is positioned directly below or to the side of the target bar. It is worth noting that regardless of whether the blowtorch assembly is directly below or to the side of the target bar, the spray direction of the blowtorch assembly is always aligned with the target bar. For example, the blowtorch assembly can be positioned to the side, and in this configuration, the angle between the spray direction of the blowtorch assembly and the vertical plane passing through the center of the target bar is at most 30°.

[0049] In some embodiments, the present invention also includes a lifting device for driving the torch assembly to rise and fall, and a detection device for detecting the diameter of the porous quartz rod 18. When the detection device detects that the diameter of the porous quartz rod 18 reaches a set value, it controls the lifting device to drive the torch assembly to fall so as to ensure that the distance between the torch assembly and the target rod is within the set range.

[0050] In this embodiment, the torch 15 has a flexible lifting and lowering function. As the deposition process progresses, the diameter of the porous quartz rod 18 gradually increases, and the torch 15 will gradually descend accordingly based on the preset algorithm and sensor feedback, so as to always maintain the optimal distance between the torch 15 and the target rod (this distance can be dynamically and precisely adjusted according to actual process requirements).

[0051] In some examples, the diameter of the quartz rod porous body 18 can be detected using sensors, typically pressure sensors 22. As deposition progresses, the weight of the quartz rod porous body 18 gradually increases. Combined with the density of the quartz rod porous body 18, the real-time diameter of the rod can be calculated. This allows control of the height of the blowtorch 15, which is generally lowered a certain distance and then maintained at that distance for deposition, rather than continuously lowered. The specific lowering rules are set according to the process conditions.

[0052] Specifically, such as Figure 11 As shown, the target rod and the drive assembly 23 for driving the target rod to rotate are mounted on a support frame or support plate 20. The support frame or support plate 20 is in a horizontal state. One side of the support frame or support plate 20 and a support body 21 are rotatably hinged around a horizontal axis. The pressure sensor 22 is located below the support frame or support plate 20 and transmits pressure through the force transmission rod and the support frame or support plate 20. Thus, the pressure sensor 22 can sense the change in gravity of the loose quartz rod 18 on the target rod and calculate the real-time diameter.

[0053] Of course, in some examples, a visual sensor, i.e. a camera, can be used to capture the relative positional relationship between the quartz rod loose body 18 and the blowtorch 15. Then, a preset algorithm is used to obtain the distance between the quartz rod loose body 18 and the blowtorch 15. The up and down movement of the blowtorch 15 is then controlled based on the comparison between the actual distance information and the required distance.

[0054] In this invention, the entire deposition reaction takes place within a sealed reaction chamber 16. The chamber walls are typically constructed of high-strength, corrosion-resistant, robust metal to ensure excellent sealing and mechanical strength. The reaction chamber 16 is also equipped with a highly efficient air supply system that works in conjunction with the exhaust system to maintain a stable negative pressure environment within the chamber, typically between -20 Pa and -5 Pa. The exhaust chamber is formed within an exhaust hood and positioned directly above the target rod, while the supply system is strategically positioned to the lower side of the target rod. By cleverly designing airflow baffles, the air around the target rod is effectively guided to flow vertically upwards, and the airflow velocity is strictly controlled within a narrow range, generally not exceeding 1 m / s. This is because excessive airflow velocity significantly interferes with the shape of the deposition flame, thereby severely impacting the quality and effectiveness of the deposition.

[0055] Specifically, the wind direction baffle includes multiple vertically arranged baffles with air holes installed on one side of the air outlet (horizontal air supply) of the air supply system, and multiple horizontal baffles installed above the vertical baffles. The horizontal baffles can be arranged in multiple layers, and the vertical baffles can also be arranged in multiple layers. It should be noted that the air holes on two adjacent baffles need to be staggered.

[0056] In some embodiments, the powder collector 100 includes a first collecting structure 1 and a second collecting structure 6. The first collecting structure 1 is provided with an inlet and an exhaust port. The inlet is connected to the powder outlet, and the exhaust port is connected to the inlet of the exhaust system. A collecting component is provided in the collecting cavity of the first collecting structure 1. The collecting component is oscillating. A storage cavity is constructed in the second collecting structure 6. The storage cavity is located below the first collecting structure 1 and is connected to the collecting cavity.

[0057] There are two specific implementation methods for the powder collector 100, the first of which is as follows:

[0058] like Figures 3 to 6 As shown, the powder collector 100 includes a first collection structure 1 and a second collection structure 6. The first collection structure 1 is provided with an inlet 8 and an exhaust port 9. The inlet 8 is used to connect to the conveying pipe 14. A collection component is provided in the collection chamber of the first collection structure 1, and the collection component can swing. The exhaust port 9 of the first collection structure 1 is connected to an exhaust system, so that the gas containing silica powder can enter the first collection structure 1 through the inlet 8 and form a gas flow. The gas containing silica powder enters the first collection structure 1 and contacts the collection component, and the silica powder is deposited on the collection component. When the silica powder reaches a certain amount, the silica powder falls into the second collection structure 6.

[0059] Specifically, in this embodiment, the first collection structure 1 is made of quartz or metal material. The collection cavity inside the first collection structure 1 is divided into an upper collection cavity 2 and a lower collection cavity 3. The upper collection cavity 2 is located above the lower collection cavity 3. The inlet 8 is located at the top of the upper collection cavity 2. The exhaust port 9 is located in the lower collection cavity 3 and is located on the side wall corresponding to the lower collection cavity 3.

[0060] In this embodiment, the collection component includes several collection plates 4, each a flat plate. These plates are arranged parallel to each other in their natural state (unaffected by external forces). The centerline of the inlet 8 is parallel to the plane containing the collection plates 4 in their natural state. The upper end of each collection plate 4 is connected to the first collection structure 1 via a rotating shaft 10, which is rotatably connected to the first collection structure 1. Both the collection plates 4 and the rotating shaft 10 are made of quartz. Silica powder enters the upper collection chamber 2 through the inlet 8 and comes into contact with the collection plates 4. The silica powder in the gas slowly deposits on the collection plates 4, which are used for the initial deposition and collection of the silica powder.

[0061] This embodiment also includes a drive structure for driving the collecting assembly to swing. The drive structure includes a power structure, a swing arm 12, and a connecting rod 11. The power structure is a cylinder, hydraulic cylinder, or electric telescopic rod, etc., capable of linear drive. The power output end of the power structure is hinged to the swing arm 12, one end of the connecting rod 11 is hinged to the swing arm 12, and the other end of the connecting rod 11 is connected to the rotating shaft 10. The power structure drives the swing arm 12 to move, which in turn drives the collecting plate 4 to swing back and forth via the connecting rod 11 and the rotating shaft 10.

[0062] In this embodiment, a ventilation baffle 7 is provided inside the first collecting structure 1. The ventilation baffle 7 is located at the ventilation port 9. One end of the ventilation baffle 7 is hinged to the first collecting structure 1. The ventilation baffle 7 is used to prevent the falling silica powder from being directly drawn away from the ventilation port 9 during ventilation. In this embodiment, an elastic retaining structure is provided between the ventilation baffle 7 and the first collecting structure 1. The elastic retaining structure is a spring.

[0063] In this embodiment, the second collecting structure 6 is located below the first collecting structure 1. The second collecting structure 6 is used for the final collection and storage of silica powder. A valve 5 is provided between the first collecting structure 1 and the second collecting structure 6 for sealing and storing the collected powder. When the second collecting structure 6 is full of silica powder, the valve 5 can be closed and the second collecting structure 6 can be replaced to achieve uninterrupted collection.

[0064] In this embodiment, inlet 8 is used to connect to the conveying pipe 14. Excess high-temperature nano-silica powder is discharged from the outlet of the conveying pipe 14 and enters the upper collection chamber 2 through inlet 8. The first collection structure 1 is equipped with a swingable collection plate 4. The collection plate 4 is connected to an external swing rod 12 through a rotating shaft 10. The swing rod 12 moves after an external force is applied by a driving structure, causing the dust on the collection plate 4 to fall downwards through the swing and enter the second collection structure 6 through the lower collection chamber 3 to complete the collection. The lower collection chamber 3 is equipped with an exhaust port 9 for connecting to an exhaust system. When the exhaust system is running, a low-speed airflow can be formed in the first collection structure 1, which drives the dust to flow and complete the deposition on the collection plate 4. The exhaust port 9 is equipped with an exhaust baffle 7 at the front end, which forms an angle with the end face of the exhaust port 9. This is used to prevent the dust from being directly sucked away when it falls from the collection plate 4. The exhaust baffle 7 can swing, and through an elastic holding structure, the angle can be changed according to the amount of dust on the exhaust baffle 7. A valve 5 is installed between the lower collection chamber 3 and the second collection structure 6. When the dust collected in the second collection structure 6 reaches a certain level, the valve 5 closes to replace the second collection structure 6. After replacement, the valve 5 is opened to continue collecting dust into the second collection structure 6, thus achieving continuous collection. Similarly, the second collection structure 6 itself is also equipped with a valve.

[0065] When the powder collector 100 of this embodiment is running, the exhaust port 9 is connected to the exhaust system, forming a low-speed airflow in the first collection structure 1 and forming a suction force at the inlet 8, drawing the air containing high-temperature nano-silica powder from the preparation structure into the upper collection chamber 2. The air comes into contact with the collection plate 4, which forms a certain angle (generally 5° to 30°) with the exhaust direction. The high-temperature dust in the air will be deposited on the collection plate 4. The collection plate 4 is in a swinging state. When a certain amount of dust is deposited, it will fall off with the swinging motion. After falling off, it enters the second collection structure 6 through the lower collection chamber 3. During the falling process, some dust may be drawn directly into the ventilation system with the air and affected the collection efficiency. Therefore, a ventilation baffle 7 is installed at the ventilation outlet 9. The ventilation baffle 7 maintains a certain angle with the end face of the ventilation outlet 9 through an elastic retaining structure. As more and more dust accumulates, the angle between the ventilation baffle 7 and the end face of the ventilation outlet 9 becomes smaller and smaller. Therefore, the dust on the ventilation baffle 7 will fall down into the second collection structure 6. At the same time, as the angle decreases, the airflow velocity through the ventilation baffle 7 increases, and the dust on the ventilation baffle 7 falls more easily into the second collection structure 6. When enough dust has fallen, the ventilation baffle 7 slowly rebounds, the flow velocity decreases, and the dust falling from the upper cavity 2 continues to deposit on the ventilation baffle 7. This cycle continues, forming a continuous dust collection.

[0066] The second method is as follows:

[0067] like Figures 7 to 10As shown, the difference between this embodiment and the first method described above is that this embodiment does not require a driving structure. In this embodiment, the centerline of the inlet 8 is at an angle to the plane where the collecting plate 4 is located in its natural state; that is, the flow direction of the air containing silica powder at the inlet 8 is at an angle to the plane where the collecting plate 4 is located in its natural state. The air containing silica powder is blown towards the collecting plate 4 at a low flow rate. Under the action of the air, the collecting plate 4 can swing without external force to collect the silica powder, and the collected silica powder falls into the second collecting structure 6 as the collecting plate 4 swings.

[0068] Example 2

[0069] This utility model also provides a method for the co-production of quartz and nano-silica powder, including:

[0070] While preparing porous quartz rods 18 using vapor deposition, the undeposited powder was collected to obtain nano-silica powder.

[0071] A sintering process is used to sinter the porous quartz rod 18 to obtain a quartz rod.

[0072] The device provided by this invention can simultaneously produce quartz rod porous body 18 and high-purity nano silica powder. Then, the quartz rod porous body 18 can be processed into quartz rod products through vacuum sintering. This achieves the purpose of simultaneously preparing quartz rods and high-purity nano silica powder, improving production efficiency. In addition, since the raw material of high-purity nano silica powder comes from silica powder that was not deposited on the surface of the target rod in the vapor deposition process, the purpose of waste recycling is achieved, saving raw materials and thus reducing the preparation cost.

[0073] Furthermore, this embodiment utilizes the co-production system for preparing quartz and nano-silica powder provided in the above embodiments to co-produce quartz and nano-silica powder. Therefore, this embodiment possesses all the advantages of the above embodiments, which will not be elaborated further here.

[0074] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A co-production system for preparing quartz and nano-silica powder, characterized in that: include: A deposition apparatus for performing a vapor deposition process to deposit silica powder on a target rod to form a porous quartz rod; the deposition apparatus is provided with a powder outlet; A powder collector, wherein the powder collector is connected to the powder outlet; A sintering apparatus for sintering the porous quartz rod to obtain a quartz rod.

2. The co-production system for preparing quartz and nano-silica powder according to claim 1, characterized in that: The powder collector is connected to the powder outlet via a conveying pipe, which is made of quartz.

3. The co-production system for preparing quartz and nano-silica powder according to claim 1, characterized in that: The deposition equipment has a reaction chamber, and the vapor deposition process is carried out in the reaction chamber. A vacuum hood is installed on the top of the reaction chamber, and the powder outlet is located on the vacuum hood, which is made of quartz material.

4. The co-production system for preparing quartz and nano-silica powder according to claim 1, characterized in that: It also includes an exhaust system and an exhaust gas treatment system. The inlet of the exhaust system is connected to the powder collector, and the outlet of the exhaust system is connected to the exhaust gas treatment system. The exhaust system is used to draw powder that has not been collected by the powder collector to the exhaust gas treatment system.

5. The co-production system for preparing quartz and nano-silica powder according to claim 1, characterized in that: The deposition equipment is used for external vapor deposition processes.

6. The co-production system for preparing quartz and nano-silica powder according to claim 1, characterized in that: The torch assembly in the deposition apparatus includes multiple torches arranged in a row along a direction parallel to the target bar. The torch assembly is mounted on a translation device that can drive the torch assembly to reciprocate along a direction parallel to the target bar.

7. The co-production system for preparing quartz and nano-silica powder according to claim 6, characterized in that: The blowtorch assembly is positioned directly below or to the side of the target rod.

8. The co-production system for preparing quartz and nano-silica powder according to claim 6, characterized in that: It also includes a lifting device for driving the torch assembly to rise and fall, and a detection device for detecting the diameter of the porous quartz rod. When the detection device detects that the diameter of the porous quartz rod reaches a set value, it controls the lifting device to drive the torch assembly to fall so as to ensure that the distance between the torch assembly and the target rod is within the set range.

9. The co-production system for preparing quartz and nano-silica powder according to claim 4, characterized in that: The powder collector includes a first collection structure and a second collection structure. The first collection structure is provided with an inlet and an exhaust port. The inlet is connected to the powder outlet, and the exhaust port is connected to the inlet of the exhaust system. A collection component is provided in the collection cavity of the first collection structure. The collection component is oscillating. A storage cavity is constructed in the second collection structure. The storage cavity is located below the first collection structure and is connected to the collection cavity.

Images