Continuous production device of silicon dioxide material

Abstract

The utility model relates to a production device, in particular to a continuous production device of a silicon dioxide material. The production device comprises a conveying frame, a quartz saggar flows on the conveying frame, a shielding cover is arranged at the top of the conveying frame, and the interior of the shielding cover above the conveying frame is sequentially divided into a feeding area, a gelling area, a drying area, a water crushing area, a drying area and a receiving area through isolation doors which are arranged at intervals and driven by a lifting cylinder. An ultrasonic rod is installed above the conveying frame of the gel area through an ultrasonic rod lifting machine, a spraying head is installed above the conveying frame of the water crushing area through a water crushing lifting machine, quartz electric heating pipes are arranged above the conveying frame of the drying area and the conveying frame of the drying area respectively, and a material collecting device is arranged on the conveying frame of the material collecting area. According to the utility model, the continuous production of silicon dioxide materials can be realized, and the production efficiency and the productivity can be effectively improved. The problems that an existing reaction kettle production mode cannot achieve continuous production, so that the productivity is low, and impurities are easily introduced are solved.

Description

Technical Field

[0001] This utility model relates to a production apparatus, specifically a continuous production apparatus for silicon dioxide materials. Background Technology

[0002] Synthetic silica sand, with its advantages of high purity, excellent physical properties, superior optical properties, wide range of applications, environmental friendliness and sustainability, and controllable production costs, has broad application prospects and an important position in modern industry. Patent application CN117361872A discloses a method for preparing high-purity silica particles. The method involves using organosilane as a raw material, adding a driving agent and an aqueous solution for hydrolysis, and synthesizing the desired silica gel blocks by adjusting process parameters. The gel is then subjected to water crushing to obtain ultra-high-purity silica gel with uniform particle size of 200-800 μm. After removing organic matter and hydroxyl groups, ultra-high-purity silica sand is obtained. This method is characterized by simple preparation process, low cost, low waste discharge, high efficiency, and stable product quality.

[0003] The silica prepared by the above method has uniform particle size and total metal impurities below 0.5 ppm. However, this reaction takes place in a reactor, which cannot be continuous, resulting in low production capacity. Furthermore, removing the silica particles from the reactor is inconvenient, requiring manual scooping, which easily introduces impurities. Therefore, it is necessary to design a continuous, automated production line for high-purity silica to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a continuous production apparatus for silicon dioxide materials that can produce continuously, effectively increase production capacity, and avoid introducing impurities.

[0005] The technical solution of this utility model is:

[0006] A continuous production apparatus for silica material includes a conveyor frame, characterized in that: quartz saggars flow on the conveyor frame, a shield is provided on the top of the conveyor frame, and the shield above the conveyor frame is divided into a feeding area, a gelation area, a drying area, a water-crushing area, a drying area, and a receiving area by a series of partition doors driven by a lifting cylinder. An ultrasonic rod is installed above the conveyor frame in the gelation area via an ultrasonic rod lift, a spray head is installed above the conveyor frame in the water-crushing area via a water-crushing lift, quartz electric heating tubes are respectively provided above the conveyor frames in the drying and drying areas, and a receiving device is provided on the conveyor frame in the receiving area.

[0007] Each of the shielding covers for the gelation zone, drying zone, water-crushing zone, and baking zone is provided with an observation window.

[0008] The shielding cover is equipped with a negative pressure suction pipe that draws in volatile substances. The negative pressure suction pipe is connected to the shielding cover of each area through branch pipes.

[0009] The sides of the shielding covers for the feeding area and receiving area are provided with inlets and outlets for the quartz crucibles, and the top of the shielding cover for the feeding area is provided with a feed inlet, which is connected to multiple storage tanks via a metering pump.

[0010] A water cover is provided above the spray head.

[0011] The receiving device includes a truss, a translation motor, a tilting frame, a discharge cone, grippers, gripper cylinders, a tilting cylinder, and a receiving bucket.

[0012] The conveyor frame includes an upper conveyor chain and a lower conveyor chain. A device lifting machine is set on the outside of the feeding area and the receiving area respectively. The device lifting machine works with the upper and lower conveyor chains to realize the circulation of the quartz sagger.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This invention enables continuous production of silica materials, eliminates the danger of human contact with the reaction process, reduces pollution caused by the transfer of materials in each step of the existing synthesis process, and ensures the purity of silica materials.

[0015] 2. This invention uses ultrasonic vibration to mix raw materials, resulting in a more uniform and concentrated particle size after gel drying, which can effectively improve the quality of the finished product.

[0016] 3. This utility model uses a quartz crucible as a reaction vessel, which has a low gel thickness and a large heating area, effectively improving production efficiency and capacity; moreover, the quartz crucible facilitates transfer between different areas, further improving production efficiency and capacity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the conveyor frame of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the ultrasonic rod of this utility model;

[0020] Figure 4 This is a schematic diagram of the connection of the water cover of this utility model;

[0021] Figure 5 This is a schematic diagram showing the location of the feed inlet of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the material receiver of this utility model.

[0023] In the diagram: 1. Conveyor frame, 2. Quartz sagger, 3. Shielding cover, 4. Lifting cylinder, 5. Isolation door, 6. Ultrasonic rod lift, 7. Ultrasonic rod, 8. Water crushing lift, 9. Spray head, 10. Quartz electric heating tube, 11. Observation window, 12. Negative pressure exhaust pipe, 13. Inlet / outlet, 14. Feed inlet, 15. Metering pump, 16. Storage tank, 17. Water cover, 18. Truss, 19. Translation motor, 20. Tilting frame, 21. Unloading cone, 22. Gripper, 23. Gripper cylinder, 24. Tilting cylinder, 25. Receiving bucket, 26. Device lifting machine, 27. Hanger, 101. Upper conveyor chain, 102. Lower conveyor chain. Detailed Implementation

[0024] The continuous production apparatus for silica material includes a conveyor frame 1, on which quartz saggars 2 are circulated to transfer materials between different areas. The circulation of materials via the quartz saggars 2 enables continuous production, improving efficiency and capacity. Furthermore, because materials are transferred between different containers between processes using the quartz saggars 2, the introduction of impurities during material transfer is effectively reduced, ensuring product purity. A shielding cover 3 is installed on top of the conveyor frame 1 to create a closed environment, further preventing impurities from entering and ensuring product purity. Lifting cylinders 4 are spaced apart on the shielding cover 3 above the conveyor frame 1. The piston rods of the lifting cylinders 4 extend into the shielding cover 3, and isolation doors 5 are installed at the ends of the piston rods extending into the shielding cover 3. These spaced isolation doors 5 sequentially divide the shielding cover 3 and the space above the conveyor frame 1 into a feeding area, a gelling area, a drying area, a water-crushing area, a drying area, and a receiving area. An ultrasonic rod 7 is installed above the conveyor rack 1 in the gelation zone via an ultrasonic rod lift 6. The ultrasonic rod 7 vibrates the material ultrasonically, ensuring uniform distribution of the material components, complete reaction, and uniform distribution of reaction products, thus guaranteeing uniform product distribution. A spray head 9 is installed above the conveyor rack 1 in the water-crushing zone via a water-crushing lift 8. Quartz electric heating tubes 10 are installed above the conveyor racks 1 in the drying and baking zones, respectively. The function of the quartz electric heating tubes 10 in the drying zone is to heat the gel generated by the reaction, thereby removing volatile substances from the gel. The function of the spray heads 9 is to spray water onto the dried gel, allowing deionized water to enter the interior of the dried particles along cracks and structural gaps. Through capillary action, the dried particles are broken down, forming silica material with a particle size of 200-700μm or even smaller. The function of the quartz electric heating tubes 10 in the baking zone is to evaporate water, drying the material to form the silica material product. The receiving area's conveyor frame 1 is equipped with a receiver for collecting materials. The ultrasonic rod lift 6 and the water-jetting lift 8 are any one of the following: pneumatic cylinder, hydraulic cylinder, electric cylinder, or motor with lead screw pair.

[0025] The shields 3 of the gelation zone, drying zone, water crushing zone and drying zone are respectively provided with observation windows 11, so as to observe the production process and control the production process.

[0026] A negative pressure suction pipe 12 is installed above the shield 3 to draw out volatiles. The negative pressure suction pipe 12 is connected to the shield 3 of each area through branch pipes. The negative pressure suction pipe 12 draws out the volatiles during the drying and baking process, preventing the volatiles from settling or condensing inside the shield 3, thus making it difficult for the volatiles to re-enter the product and ensuring the purity of the product. At the same time, by suction, the volatiles are prevented from spreading to the surrounding environment, thereby reducing environmental pollution.

[0027] The sides of the shielding cover 3 for the feeding and receiving areas are provided with inlets and outlets 13 for the quartz saggers 2 to enter and exit the shielding cover 3. The top of the shielding cover 3 for the feeding area is provided with a feed inlet 14, which is connected to multiple storage tanks 16 via a metering pump 15, so that the raw materials in the storage tanks 16 are pumped to the feed inlet 14 by the metering pump 15, and then injected into the quartz saggers 2.

[0028] A water cover 17 is provided above the spray head 9 to shield the top of the quartz casket 2 and prevent material from splashing during the spraying process.

[0029] The receiving device includes a truss 18, a translation motor 19, a tilting frame 20, a discharge cone 21, grippers 22, gripper cylinders 23, tilting cylinders 24, and a receiving hopper 25. A hanger 27 is movably mounted on the truss, and a translation motor 19 is installed at the top of the hanger 27 to drive the hanger 27 to move. The tilting frame 20 is movably mounted at the bottom of the hanger 27 via bearings. The discharge cone 21, which guides the discharge, is installed on the tilting frame 20. The tilting frame 20 is movably mounted around the outside of the discharge cone 21. The truss 18 is equipped with a gripper 22, which is driven by a gripper cylinder 23 to clamp the quartz sagger 2. A tilting cylinder 21 is installed on the hanging clamp 27 on one side of the tilting frame 20. The rotating shaft of the tilting cylinder 21 is connected to the tilting frame 20 to drive the tilting frame 20 to tilt, thereby driving the quartz sagger 2 to tilt and unload the product in the quartz sagger 2 by gravity. A receiving bucket 25 is installed below the truss 18 to receive the unloaded product and to transfer and store the product.

[0030] The conveyor frame 1 includes an upper conveyor chain 101 and a lower conveyor chain 102. The loading area and the receiving area are respectively equipped with a device lifting machine 26 (LC025A23 type). The device lifting machine 26 works with the upper conveyor chain 101 and the lower conveyor chain 102 to realize the circulation of the quartz sagger 2.

[0031] During the continuous production of this silica material, the hoist 26 pushes the empty quartz sagger 2 through the inlet / outlet 13 of the shield 3 into the loading area of ​​the conveyor frame 1. After the quartz sagger 2 is in place, the metering pump 15 is started to pump the various raw materials into the quartz sagger 2 through the feed inlet 14 on the shield 3. After the raw materials are pumped, the quartz sagger 2 enters the gelation zone under the push of the upper conveyor chain 101. After the quartz sagger 2 is conveyed to its position, the ultrasonic rod lift 6 drives the ultrasonic rod 7 downward, inserts the ultrasonic rod 7 into the raw materials in the quartz sagger 2, and starts the ultrasonic rod 7 to vibrate the raw materials, so that the raw materials are evenly dispersed and reacted evenly. After reacting for 1 hour, that is, after complete gelation, the quartz sagger 2 is conveyed to the drying zone, and the quartz electric heating tube 10 in the drying zone is started to heat the gel for 1 hour to completely evaporate the volatiles in the gel. After drying for 1 hour, the quartz sagger 2 is conveyed to the water crushing zone, and the water crushing lift 8 is started to cover the top of the quartz sagger 2 through the water cover 17. After the covering is in place, the spray head 9 is activated to spray water into the quartz sagger 2, completely submerging the material. After spraying, the material is left to stand for 1 hour. After standing, the quartz sagger 2 is transferred to the drying area, where the material is heated by the quartz electric heating tube 10 to evaporate the water and dry the material, forming a silica material product. After drying, the quartz sagger 2 is transferred to the receiving area, and the gripper cylinder 23 is activated, driving the gripper 22 to clamp the quartz sagger 2. After clamping, the translation motor 19 is activated, which sequentially moves the quartz sagger 2 above the receiving bucket 25 via the hanger 27, the tilting frame 20, and the gripper 22. After the quartz sagger 2 is transferred, the tilting cylinder 24 is activated, which drives the quartz sagger 2 and the discharge cone 21 to tilt via the tilting frame 20, unloading the product from the quartz sagger 2 into the receiving bucket 25. After unloading is completed, the receiver resets and brings the unloaded quartz sag 2 back to the upper conveyor chain 101 of the conveyor frame 1. Once the quartz sag 2 is in place, it is conveyed to the device lifting machine 26. The device lifting machine 26 transfers the quartz sag 2 from the upper conveyor chain 101 to the lower conveyor chain 102. The lower conveyor chain 102 then transfers the quartz sag 2 to the device lifting machine 26 on the upper material area side, thus circulating the quartz sag 2 and entering the next working cycle.

[0032] This continuous production apparatus for silica materials enables continuous production, eliminating the hazards of human contact during the reaction process and reducing contamination from transfers between steps in the existing synthesis process, thus ensuring the purity of the silica materials. It utilizes ultrasonic vibration to mix the raw materials, resulting in more uniform and concentrated particle size after gel drying, effectively improving the quality of the finished product. Using a quartz crucible as the reaction vessel provides a thin gel and a large heating area, effectively improving production efficiency and capacity. Furthermore, the quartz crucible facilitates easy transfer between different areas, further enhancing production efficiency and capacity. This solves the problems of low capacity and the introduction of impurities that affect purity caused by discontinuous production methods in existing processes.

Claims

1. A continuous production apparatus of a silica material, comprising a conveyor frame (1), characterized in that: The quartz box (2) is circulated on the conveying frame (1), the shielding cover (3) is arranged on the top of the conveying frame (1), the shielding cover (3) above the conveying frame (1) is sequentially separated into the feeding area, the gel area, the drying area, the water crushing area, the drying area and the material collecting area by the isolation doors (5) driven by the lifting cylinders (4) arranged at intervals, the ultrasonic rod (7) is arranged on the conveying frame (1) above the gel area through the ultrasonic rod elevator (6), the spraying head (9) is arranged on the conveying frame (1) above the water crushing area through the water crushing elevator (8), the quartz electric heating pipe (10) is arranged on the conveying frame (1) above the drying area and the drying area respectively, and the material collector is arranged on the conveying frame (1) of the material collecting area.

2. An apparatus for continuous production of a silica material according to claim 1, characterized in that: The shielding cover (3) of the gel area, the drying area, the water crushing area and the drying area is respectively provided with an observation window (11) correspondingly.

3. The apparatus for continuous production of a silica material according to claim 1, wherein: The shielding cover (3) is provided with a negative pressure air exhaust pipe (12) for sucking volatile matters above the shielding cover (3), and the negative pressure air exhaust pipe (12) is communicated with the shielding cover (3) of each area through branch pipes.

4. The apparatus for continuous production of a silica material according to claim 1, wherein: The side surface of the shielding cover (3) of the feeding area and the material collecting area is provided with an entrance and exit (13) for the quartz box (2), the top of the shielding cover (3) of the feeding area is provided with a feeding port (14), and the feeding port (14) is communicated with a plurality of storage tanks (16) through a quantitative pump (15).

5. The apparatus for continuous production of a silica material according to claim 1, wherein: The spraying head (9) is provided with a water cover (17) above the spraying head (9).

6. The apparatus for continuous production of a silica material according to claim 1, wherein: The material collector comprises a truss (18), a translation motor (19), a turnover frame (20), a discharging cone hopper (21), a clamping jaw (22), a clamping jaw cylinder (23), a turnover cylinder (24) and a material collecting barrel (25).

7. The apparatus for continuous production of a silica material according to claim 1, wherein: The conveying frame (1) comprises an upper layer conveying chain (101) and a lower layer conveying chain (102), the device landing machine (26) is arranged outside the feeding area and the material collecting area respectively, the device landing machine (26) is matched with the upper layer conveying chain (101) and the lower layer conveying chain (102), and the circulation circulation of the quartz box (2) is realized.

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