Spherical silicon dioxide powder preparation device and method

Abstract

The invention discloses a spherical silicon dioxide powder preparation device and method, and belongs to the technical field of spherical silicon dioxide powder preparation equipment. A combustion reaction inner barrel is arranged in an outer barrel, silicon powder quantitatively enters an outer cavity between the outer barrel and the combustion reaction inner barrel, and a driving mechanism independently drives a carrier gas pipeline to be communicated; the driving mechanism independently drives a second feeding port of the combustion reaction inner barrel to be opened and independently drives the oxygen pipeline to be communicated, oxygen enters the combustion reaction inner barrel through the oxygen pipeline and blows away carrier gas, oxygen and silicon powder in the combustion reaction inner barrel to obtain a mixture in a blown-away state, and the driving mechanism independently drives the igniter to ignite. A mixture of carrier gas, oxygen and silicon powder in a blowing-away state in the combustion reaction inner barrel is fully combusted to obtain liquid silicon dioxide liquid drops, the driving mechanism independently drives the discharging pipe to be communicated, the feeding amount is controlled by triggering the valve body, automatic triggering is achieved, manual intervention is not needed, and accurate feeding amount and continuous production can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of spherical silicon dioxide powder preparation equipment, and specifically relates to a spherical silicon dioxide powder preparation device and method. Background Art

[0002] Spherical silica powder is a high-purity, high-dispersibility powder material, mainly made of silicon dioxide, with excellent physical and chemical properties. Spherical silica powder is widely used in integrated circuits, aviation industry, resins, rubber silicone, plastic products and other fields.

[0003] In the prior art, a Chinese invention patent with application number CN202010069850.2 discloses a method and apparatus for preparing spherical silicon dioxide powder. Spherical silicon dioxide powder is prepared by direct combustion of elemental silicon powder and oxygen or air. The spherical silicon dioxide powder has excellent morphology, is spherical, has a sphericity of 100%, and has a particle size of submicron and nanometers. The product has high purity and good dispersibility. It can effectively solve the problem that spherical silicon dioxide powder with submicron and nanometer particle size, high sphericity and high purity cannot be produced in the current domestic market, and realize the localization of submicron and nanometer spherical silicon dioxide powder. However, in the process of adding carrier gas, silicon powder and oxygen, the feed amount of carrier gas, silicon powder and oxygen cannot be reasonably controlled. Therefore, a spherical silicon dioxide powder preparation device is needed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a device and method for preparing spherical silicon dioxide powder.

[0005] The technical solution adopted to solve the above technical problems is: an outer cylinder is arranged on the second supporting frame, a combustion reaction inner cylinder is arranged inside the outer cylinder, an outer cavity is formed between the outer cylinder and the combustion reaction inner cylinder, silicon powder is fed into the outer cavity, a carrier gas pipeline interconnected with the outer cavity is arranged on the outer cylinder, carrier gas is passed into the carrier gas pipeline, a first valve body is arranged on the carrier gas pipeline, a second slide plate is slidably connected with the first valve body, a first through hole interconnected with the inlet end of the carrier gas pipeline is processed on the second slide plate, the second slide plate is fixedly connected to the driving mechanism, a second feed port interconnected with the outer cavity is processed on the side wall of the combustion reaction inner cylinder, a fourth valve body is arranged on the combustion reaction inner cylinder, a third slide plate is slidably connected with the fourth valve body, A second through hole interconnected with the material openings, the second through hole is fixedly connected to the driving mechanism, an oxygen pipeline interconnected with the interior of the combustion reaction inner cylinder is processed on the side wall of the combustion reaction inner cylinder, oxygen is introduced into the oxygen pipeline, a third valve body is arranged on the oxygen pipeline, a fourth slide is slidably connected with the third valve body, a third through hole interconnected with the inlet end of the oxygen pipeline is processed on the fourth slide, the fourth slide is fixedly connected to the driving mechanism, a discharge pipe interconnected with the bottom outlet end of the combustion reaction inner cylinder is arranged, a second valve body is arranged on the discharge pipe, a fifth slide is slidably connected with the second valve body, a fourth through hole interconnected with the discharge pipe is processed on the fifth slide, and the fifth slide is fixedly connected to the driving mechanism; a support plate is arranged on the top of the outer cylinder, and the support plate is supported by a support plate The support rod is fixedly connected to the top cover, and a driving mechanism is arranged on the top cover, and the driving mechanism separately drives the second slide plate to slide in the first valve body or the third slide plate to slide in the fourth valve body or the fourth slide plate to slide in the third valve body or the fifth slide plate to slide in the second valve body, an upper connecting cylinder is arranged above the outer cylinder between the support plate and the top cover, and a plurality of third sliding rods are arranged along the circumferential direction of the support plate, and each third sliding rod is respectively slidably connected to the support plate in a vertical direction, and a fixing ring is slidably connected to the outer cavity in a vertical direction, and the fixing ring is slidably connected to the outer cavity in a vertical direction, and the fixing ring is located below the support plate, and a second top plate that conflicts with the driving mechanism is arranged at the top end of one of the third sliding rods, and the bottom end of each third sliding rod is fixedly connected to the fixing ring respectively, and each third sliding Eighth springs are respectively arranged on the rods, and one end of each eighth spring is respectively fixedly connected to the bottom of the support plate, and the other end of each eighth spring is respectively fixedly connected to the fixing ring. A plurality of fourth sliding rods are slidably connected to the support plate in a vertical direction, and a first top plate that contacts with a driving mechanism is arranged on the top of one of the fourth sliding rods, and a pressure plate located inside the combustion reaction inner cylinder is arranged at the bottom of the plurality of fourth sliding rods, and the pressure plate is slidably connected to the inside of the combustion reaction inner cylinder in a vertical direction, and a ninth spring is respectively arranged on each fourth sliding rod, and one end of each ninth spring is respectively fixedly connected to the bottom of the support plate, and the other end of each ninth spring is respectively fixedly connected to the pressure plate, and an igniter for burning a mixture of carrier gas, oxygen and silicon powder inside the carrier gas pipeline is arranged on the combustion reaction inner cylinder.

[0006] Furthermore, a second fixed disk is provided on one side outside the outer cylinder, a silicon powder tank for storing silicon powder is provided on the upper end of the second fixed disk, a first feed port connected to the outlet end of the silicon powder tank is processed on the upper end of the second fixed disk, the outlet end of the second fixed disk is connected to the outer cavity, a second motor for driving the turntable to rotate is provided at the bottom of the second fixed disk, the turntable is located inside the second fixed disk, and connecting holes connected to the first feed port and the outer cavity are evenly processed in the circumferential direction of the turntable.

[0007] Furthermore, a screw rod is threadedly connected to the support plate, which is rotatably connected to the fourth support frame on the top of the pressure plate. A third sleeve located below the pressure plate is fixedly installed at the bottom of the screw rod, and fan blades for blowing away the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder are evenly arranged in the circumferential direction of the third sleeve.

[0008] Furthermore, the first valve body is fixedly connected to one end of the second connecting tube, the other end of the second connecting tube is fixedly connected to the driving mechanism, the fourth valve body is fixedly connected to one end of the fourth connecting tube, the other end of the fourth connecting tube is fixedly connected to the driving mechanism, the third valve body is fixedly connected to one end of the third connecting tube, the other end of the third connecting tube is fixedly connected to the driving mechanism, the second valve body is fixedly connected to one end of the first connecting tube, the other end of the first connecting tube is fixedly connected to the driving mechanism, and the top cover is evenly processed in the circumferential direction with second card grooves that are respectively engaged with the second connecting tube, the fourth connecting tube, the third connecting tube and the first connecting tube.

[0009] Furthermore, the driving mechanism is as follows: a first fixed plate is fixedly installed on the top cover, a first supporting frame is arranged on the top cover, a first motor that drives the rotating ring to rotate is arranged on the first supporting frame, the rotating ring is located above the first fixed plate, the rotating ring is rotatably connected to the first fixed plate, a third sliding hole, a fourth sliding hole, a fifth sliding hole and a sixth sliding hole are evenly processed on the first fixed plate in a circumferential direction, a third sliding block is slidably connected in the third sliding hole, a first resisting rod is arranged on the third sliding block, one side of the third sliding block is fixedly connected to the inner end face of the third sliding hole by a fifth spring, the other side of the third sliding block is fixedly connected to the third sliding block by a first connecting line, the first connecting line is located inside the fourth connecting tube, and the third An eleventh spring is arranged on the outer circumference of the first connecting line, one end of the eleventh spring is fixedly connected to the third slide plate, and the other end of the eleventh spring is fixedly connected to the fourth valve body; a fourth sliding block is slidably connected in the fourth sliding hole, and a second resistance rod is arranged on the fourth sliding block, one side of the fourth sliding block is fixedly connected to the inner end surface of the fourth sliding hole through a sixth spring, and the other side of the fourth sliding block is fixedly connected to the second slide plate through a fourth connecting line, the fourth connecting line is located inside the second connecting tube, a tenth spring is arranged on the fourth connecting line, one end of the tenth spring is fixedly connected to the second slide plate, and the other end of the tenth spring is fixedly connected to the first valve body; a fifth sliding block is slidably connected in the fifth sliding hole, and a third resistance rod is arranged on the fifth sliding block Rod, one side of the fifth slider is fixedly connected to the inner end surface of the fifth sliding hole through the third spring, the other side of the fifth slider is fixedly connected to the fifth slide plate through the third connecting line, the third connecting line is located inside the first connecting tube, a thirteenth spring is arranged on the third connecting line, one end of the thirteenth spring is fixedly connected to the fifth slide plate, and the other end of the thirteenth spring is fixedly connected to the second valve body; a sixth slider is slidably connected in the sixth sliding hole, a fourth resisting rod is arranged on the sixth slider, one side of the sixth slider is fixedly connected to the inner end surface of the sixth sliding hole through the seventh spring, the other side of the sixth slider is fixedly connected to the fourth slide plate through the second connecting line, the second connecting line is located inside the third connecting tube, and a A twelfth spring, one end of the twelfth spring is fixedly connected to the fourth slide plate, and the other end of the twelfth spring is fixedly connected to the third valve body; a support plate is provided on the rotating ring, and a first groove which is engaged with the ignition component is processed on the support plate; a third resistance plate located above the support plate is provided on the rotating ring; a first resistance component which is in contact with the third resistance plate is provided on one side of the top cover, and a second resistance component which is in contact with the third resistance plate is provided on the other side of the top cover; a trapezoidal plate is provided on the rotating ring below the support plate, and the trapezoidal plate is processed with a first inclined resistance surface, an arc resistance surface, and a second inclined resistance surface which are respectively in contact with the first resistance rod, the second resistance rod, the third resistance rod, and the fourth resistance rod.

[0010] Furthermore, the first resistance component is as follows: a second sleeve is provided on one side of the top cover, a first slide bar is slidably connected inside the second sleeve along a vertical direction, second slide holes are respectively processed on both sides of the second sleeve, first slide blocks slidably connected to the second slide holes along a vertical direction are respectively provided on both sides of the first slide bar, a first spring is provided on the first slide bar, one end of the first spring is fixedly connected to the bottom of the first slide bar, and the other end of the first spring is fixedly connected to the bottom surface of the top cover, a second resistance plate is provided on the top of the first slide bar to resist the second top plate at the top of the third slide bar, and a first baffle is provided on the second resistance plate to resist the third resistance plate;

[0011] The second resistance component is as follows: a first sleeve is provided on the other side of the top cover, a second slide rod is slidably connected to the inside of the first sleeve along a vertical direction, first slide holes are respectively processed on both sides of the first sleeve, second slide blocks slidably connected to the first slide holes along a vertical direction are respectively provided on both sides of the second slide rod, a second spring is provided on the second slide rod, one end of the second spring is fixedly connected to the bottom of the second slide rod, and the other end of the second spring is fixedly connected to the bottom surface of the top cover, a first resistance plate is provided on the top of the second slide rod to resist the first top plate at the top of the fourth slide rod, and a second baffle is provided on the first resistance plate to resist the third resistance plate.

[0012] Furthermore, the ignition assembly is as follows: an electric cylinder is provided on the top cover, the output end of the electric cylinder is fixedly connected to the first slide via a connecting rod, a third support frame is provided on the top cover, fixed rods located on both sides of the connecting rod are provided on the third support frame, the fixed rods are slidably connected to the first slide along the horizontal direction, a fourth spring is provided on the fixed rod, one end of the fourth spring is fixedly connected to the first slide, and the other end of the fourth spring is fixedly connected to the fixed rod, a clamping rod is provided on the first slide, a contact wheel clamped with the first clamping slot is provided at the bottom of the clamping rod, a contact head that contacts the igniter switch on the third support frame is provided on the first slide, and the igniter switch is electrically connected to the igniter.

[0013] A preparation method using a spherical silicon dioxide powder preparation device comprises the following steps:

[0014] S1, silicon powder quantitatively enters the outer cavity between the outer cylinder and the combustion reaction inner cylinder, the driving mechanism drives the carrier gas pipeline to be connected, the carrier gas enters the outer cavity between the outer cylinder and the combustion reaction inner cylinder through the carrier gas pipeline, the driving mechanism drives the second feed port of the combustion reaction inner cylinder to open, the carrier gas and silicon powder enter the combustion reaction inner cylinder through the second feed port, the driving mechanism drives the oxygen pipeline to be connected, oxygen enters the combustion reaction inner cylinder through the oxygen pipeline, and the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder are blown away to obtain a mixture in a blown away state;

[0015] S2, the driving mechanism drives the igniter alone to ignite, and the mixture of the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder is fully burned to obtain liquid silicon dioxide droplets, and the driving mechanism drives the discharge pipe alone to connect, and the liquid silicon dioxide droplets in the combustion reaction inner cylinder flow out through the discharge pipe;

[0016] S3, cooling, separating and collecting the outflowing liquid silicon dioxide droplets in sequence with a bag filter to obtain spherical silicon dioxide powder.

[0017] Furthermore, in step S1, the method for quantitatively entering the silicon powder into the outer cavity between the outer cylinder and the combustion reaction inner cylinder is as follows: the output shaft of the second motor drives the turntable in the second fixed disk to rotate, and the multiple connecting holes on the turntable are respectively and sequentially connected with the first feed port of the second fixed disk, and the silicon powder in the silicon powder tank enters the outer cavity between the outer cylinder and the combustion reaction inner cylinder through the first feed port and the connecting holes in sequence;

[0018] The method in which the driving mechanism alone drives the carrier gas pipeline to communicate in step S1 is as follows: the output shaft of the first motor drives the rotating ring to rotate, the trapezoidal plate on the rotating ring rotates, the second resistance rod on the fourth slider contacts the first inclined resistance surface on the trapezoidal plate and moves to contact the arc resistance surface on the trapezoidal plate, the second resistance rod drives the fourth slider to slide in the fourth sliding hole, the fourth slider drives the second slider to slide in the first valve body through the fourth connecting line, the first through hole on the second slider moves to be interconnected with the carrier gas pipeline, the second feed port, the oxygen pipeline and the discharge pipe are closed, and the carrier gas is interconnected with the carrier gas pipeline and enters the outer cavity between the outer cylinder and the combustion reaction inner cylinder;

[0019] The method of the driving mechanism in step S1 driving the second feed port of the combustion reaction inner cylinder to open independently is as follows: when the carrier gas enters the outer cavity between the outer cylinder and the combustion reaction inner cylinder, the fixing ring in the outer cavity drives the third slide bar to move in a vertical direction on the support plate, and a support bar at the top end of one of the third slide bars moves to contact with the bottom of the second contact plate, and the second contact plate drives the first slide bar on the first slide bar to move upward in the second slide hole on the second sleeve in the vertical direction, and at the same time, the first slide bar moves upward in the vertical direction on the top cover, and the second contact plate drives the first baffle plate to move in the vertical direction. The first baffle plate does not conflict with the third conflicting plate, the rotating ring continues to drive the trapezoidal plate to rotate, the first conflicting rod on the third slider conflicts with the second inclined conflicting surface on the trapezoidal plate and moves to conflict with the arc conflicting surface on the trapezoidal plate, the first conflicting rod drives the third slider to slide in the third sliding hole, the third slider drives the third slide plate to slide in the fourth valve body through the first connecting line, the second through hole on the third slide plate is connected to the second feed port on the combustion reaction inner cylinder, the carrier gas and silicon powder enter the combustion reaction inner cylinder through the second feed port, and the carrier gas pipeline, the oxygen pipeline and the discharge pipe are closed;

[0020] The method in which the driving mechanism alone drives the oxygen pipeline to connect in step S1 is as follows: the rotating ring continues to drive the trapezoidal plate to rotate, the fourth resistance rod on the sixth slider contacts the second inclined resistance surface on the trapezoidal plate and moves to contact the arc resistance surface on the trapezoidal plate, the fourth resistance rod drives the sixth slider to slide in the sixth sliding hole, the sixth slider drives the fourth slider to slide in the third valve body through the second connecting line, the third through hole on the fourth slider moves to be connected with the oxygen pipeline, the carrier gas pipeline, the second feed port and the discharge pipe are closed, and oxygen enters the combustion reaction inner cylinder through the oxygen pipeline.

[0021] Furthermore, in the step S2, the driving mechanism independently drives the igniter to ignite as follows: when the carrier gas, oxygen and silicon powder enter the combustion reaction inner cylinder, the pressure plate inside the combustion reaction inner cylinder drives the fourth slide bar to move in a vertical direction on the support plate, and the pressure plate drives the screw rod to move in the vertical direction. While the screw rod is threadedly connected to the support plate, it drives the screw rod to rotate, and multiple blades of the third sleeve at the bottom of the screw rod rotate to blow away the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder, and the first top plate at the top of one of the fourth slide rods moves to contact with the bottom of the first contact plate, and the first contact plate drives the second slide bar on the first sleeve The cylinder moves upward in the first sliding hole in the vertical direction, and the second sliding rod moves upward in the vertical direction on the top cover at the same time. The first contact plate drives the second baffle plate to move upward in the vertical direction, and the second baffle plate does not conflict with the third contact plate. The rotating ring continues to rotate, and the output end of the electric cylinder drives the first slide plate to slide in the horizontal direction on the fixed rod through the connecting rod. The first slide plate drives the contact wheel to engage with the first clamping groove of the rotating ring through the clamping rod. At the same time, the contact head moves to conflict with the igniter switch, and the igniter switch controls the igniter to open, and the carrier gas pipeline, oxygen pipeline, second feed port and discharge pipe are closed to ignite the carrier gas, oxygen and silicon powder inside the combustion reaction inner cylinder;

[0022] The method in which the driving mechanism in step S2 independently drives the discharge pipe to connect is: the rotating ring continues to drive the trapezoidal plate to rotate, the third resistance rod on the fifth slider contacts the second inclined resistance surface of the trapezoidal plate and moves to contact the circular arc resistance surface of the trapezoidal plate, the third resistance rod drives the fifth slider to slide in the fifth sliding hole, the fifth slider drives the fifth slide plate to slide in the second valve body through the third connecting line, the fourth through hole on the fifth slide plate moves to be connected with the discharge pipe, and the liquid silica droplets in the combustion reaction inner cylinder flow out through the discharge pipe.

[0023] The beneficial effects of the present invention are as follows: (1) the silicon powder of the present invention quantitatively enters the outer cavity between the outer cylinder and the combustion reaction inner cylinder, the driving mechanism independently drives the carrier gas pipeline to be connected, the carrier gas enters the outer cavity between the outer cylinder and the combustion reaction inner cylinder through the carrier gas pipeline, the driving mechanism independently drives the second feed port of the combustion reaction inner cylinder to open, the carrier gas and silicon powder enter the combustion reaction inner cylinder through the second feed port, the driving mechanism independently drives the oxygen pipeline to be connected, oxygen enters the combustion reaction inner cylinder through the oxygen pipeline, the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder are blown away to obtain a mixture in a blown away state, the driving mechanism independently drives the igniter to ignite, the mixture of the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder in a blown away state is fully burned to obtain liquid silicon dioxide droplets, the driving mechanism independently drives the discharge pipe to be connected, the liquid silicon dioxide droplets in the combustion reaction inner cylinder flow out through the discharge pipe, the feed amount is controlled by triggering the valve body, automatic triggering is realized, no manual intervention is required, precise feed amount can be achieved, and continuous production can be achieved.

[0024] (2) The present invention can use the residual heat of the combustion reaction inner cylinder for preheating through the outer cylinder, and can reduce the explosion sound in the combustion reaction inner cylinder reaction by using the outer cylinder as a buffer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of an embodiment of a device for preparing spherical silicon dioxide powder according to the present invention.

[0026] Figure 2 yes Figure 1 Schematic diagram of the structure from another angle.

[0027] Figure 3 It is a schematic diagram of the parts structure of the turntable and the second motor.

[0028] Figure 4 It is a schematic diagram of the structure of the outer cylinder.

[0029] Figure 5 yes Figure 1 The schematic diagram of the structure in which the upper connecting tube and the outer tube are removed.

[0030] Figure 6 It is a schematic diagram of the structure of the combustion reaction inner cylinder.

[0031] Figure 7 It is a schematic diagram of the internal structure of the combustion reaction inner cylinder.

[0032] Figure 8 It is a structural diagram of the screw rod, pressure plate and fan blades.

[0033] Fig. 9 It is a schematic diagram of the structure of the screw rod, the fan blades and the third sleeve.

[0034] Fig.10It is a structural diagram of the driving mechanism.

[0035] Fig.11 It is a schematic diagram of the parts structure on the top cover.

[0036] Fig.12 It is a schematic structural diagram of the first conflict component.

[0037] Fig.13 Schematic diagram of the structure of the second conflict component.

[0038] Fig.14 It is a schematic diagram of the parts structure on the first fixed plate.

[0039] Fig.15 It is a schematic diagram of the parts structure on the rotating ring.

[0040] Fig.16 It is a schematic diagram of the structures of the third slider, the fourth slider, the fifth slider and the sixth slider.

[0041] Fig.17 It is a structural schematic diagram of the second slide plate and the fourth connecting line.

[0042] Fig.18 It is a structural schematic diagram of the third slide plate and the first connecting line.

[0043] Fig.19 It is a structural schematic diagram of the fourth slide plate and the second connecting line.

[0044] Fig. 20 It is a structural schematic diagram of the fifth slide plate and the third connecting line.

[0045] Fig.21 It is a structural diagram of the ignition component.

[0046] Fig. 22 It is a schematic diagram of the structure of the state in which the driving mechanism alone drives the carrier gas pipeline to be connected.

[0047] Fig.23 It is a structural schematic diagram of a state in which the driving mechanism alone drives the second feed port of the combustion reaction inner cylinder to open.

[0048] Fig.24 It is a schematic diagram of the structure of the state in which the driving mechanism alone drives the oxygen pipeline to be connected.

[0049] Fig.25 It is a schematic diagram of the structure of the state in which the driving mechanism fully burns the mixture of carrier gas, oxygen and silicon powder in a blown-off state in the upper connecting cylinder.

[0050] Fig.26 It is a schematic diagram of the structure of the state in which the driving mechanism alone drives the discharge pipe to be connected.

[0051] Figure numerals: 1, driving mechanism; 101, first motor; 102, first support frame; 103, first contact plate; 104, first sleeve; 105, first fixed disk; 106, rotating ring; 107, second sleeve; 108, second contact plate; 109, first slider; 110, first slide bar; 111, first spring; 112, first baffle plate; 113, second baffle plate; 114, second slider; 115, second slide bar; 116, second spring; 117, first slide hole; 118, second slide hole; 119, third slider; 120, first contact bar; 121, third slide hole; 122, fourth slide hole; 123, second contact bar; 124, The fourth slider; 125, the fifth sliding hole; 126, the third contact rod; 127, the fifth slider; 128, the third spring; 129, the fourth contact rod; 130, the sixth slider; 131, the sixth sliding hole; 132, the first inclined contact surface; 133, the third contact plate; 134, the second inclined contact surface; 135, the arc contact surface; 136, the first slot; 137, the first connecting line; 138, the second connecting line; 139, the third connecting line; 140, the fourth connecting line; 141, the third support frame; 142, the contact wheel; 143, the clamping rod; 144, the first slider; 145, the contact head; 146, the connecting rod; 147, the fixing rod; 148, the fourth spring spring; 149, electric cylinder; 150, fifth spring; 151, sixth spring; 152, seventh spring; 153, trapezoidal plate; 154, support plate; 155, igniter switch; 2, upper connecting tube; 3, outer tube; 4, first connecting tube; 5, second support frame; 6, discharge pipe; 7, second motor; 8, second fixed plate; 9, silicon powder tank; 10, second connecting tube; 11, third connecting tube; 12, fourth connecting tube; 13, igniter; 14, top cover; 15, turntable; 16, connecting hole; 17, third slide bar; 18, support plate; 19, eighth spring; 20, combustion reaction inner tube; 21, first valve body; 22, carrier gas pipeline; 23, second valve body; 2 4. The third valve body; 25. The oxygen pipeline; 26. The fourth valve body; 27. The support rod; 28. The first feed port; 29. ​​The second feed port; 30. The first top plate; 31. The fixing ring; 32. The fourth slide rod; 33. The ninth spring; 34. The screw rod; 35. The fourth support frame; 36. The pressure plate; 37. The second top plate; 38. The fan blade; 39. The third sleeve; 40. The tenth spring; 41. The second slide plate; 42. The first through hole; 43. The second through hole; 44. The third slide plate; 45. The eleventh spring; 46. The third through hole; 47. The fourth slide plate; 48. The twelfth spring; 49. The fourth through hole; 50. The fifth slide plate; 51. The thirteenth spring; 52. The second slot. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0053] like Figures 1 to 9 As shown, the spherical silicon dioxide powder preparation device of this embodiment comprises a driving mechanism 1, an upper connecting tube 2, an outer tube 3, a first connecting tube 4, a second support frame 5, a discharge tube 6, a second motor 7, a second fixed plate 8, a silicon powder tank 9, a second connecting tube 10, a third connecting tube 11, a fourth connecting tube 12, an igniter 13, a top cover 14, a turntable 15, a connecting hole 16, a third sliding rod 17, a support plate 18, an eighth spring 19, a combustion reaction inner tube 20, a first valve body 21, a carrier gas pipeline 22, a second valve body 23, a third valve body 24, an oxygen pipeline 25, and a fourth valve The body 26, the support rod 27, the first feed port 28, the second feed port 29, the first top plate 30, the fixing ring 31, the fourth slide rod 32, the ninth spring 33, the screw rod 34, the fourth support frame 35, the pressure plate 36, the second top plate 37, the fan blade 38, the third sleeve 39, the tenth spring 40, the second slide plate 41, the first through hole 42, the second through hole 43, the third slide plate 44, the eleventh spring 45, the third through hole 46, the fourth slide plate 47, the twelfth spring 48, the fourth through hole 49, the fifth slide plate 50, the thirteenth spring 51, and the second slot 52 are connected to form a structure.

[0054] An outer cylinder 3 is arranged on the second support frame 5, and a combustion reaction inner cylinder 20 is arranged inside the outer cylinder 3. An outer cavity is formed between the outer cylinder 3 and the combustion reaction inner cylinder 20, and silicon powder is fed into the outer cavity. A second fixed disk 8 is arranged on the outer side of the outer cylinder 3, and a silicon powder tank 9 for storing silicon powder is arranged on the upper end of the second fixed disk 8. A first feed port 28 which is interconnected with the outlet end of the silicon powder tank 9 is processed on the upper end of the second fixed disk 8, and the outlet end of the second fixed disk 8 is interconnected with the outer cavity. A second motor 7 which drives the turntable 15 to rotate is arranged at the bottom of the second fixed disk 8. The turntable 15 is located inside the second fixed disk 8, and the turntable 15 is evenly processed in the circumferential direction with connecting holes 16 which are respectively interconnected with the first feed port 28 and the outer cavity.

[0055] The outer cylinder 3 is provided with a carrier gas pipeline 22 interconnected with the outer cavity, and the carrier gas is introduced into the carrier gas pipeline 22. The carrier gas pipeline 22 is provided with a first valve body 21, and a second slide plate 41 is slidably connected in the first valve body 21. The second slide plate 41 is processed with a first through hole 42 interconnected with the inlet end of the carrier gas pipeline 22, and the second slide plate 41 is fixedly connected to the driving mechanism 1. The first valve body 21 is fixedly connected to one end of the second connecting pipe 10, and the other end of the second connecting pipe 10 is fixedly connected to the driving mechanism 1. The side wall of the combustion reaction inner cylinder 20 is processed with a second feed port 29 interconnected with the outer cavity, and the combustion reaction inner cylinder 20 is provided with a fourth valve body 26. The fourth valve body 26 is slidably connected with a third slide plate 44, and the third slide plate 44 is processed with a second through hole 43 interconnected with the second feed port 29, and the second through hole 43 is fixedly connected to the driving mechanism 1. The fourth valve body 26 is fixedly connected to one end of the fourth connecting pipe 12, and the other end of the fourth connecting pipe 12 is fixedly connected to the driving mechanism 1. The side wall of the combustion reaction inner tube 20 is processed with an oxygen pipeline 25 interconnected with the inside of the combustion reaction inner tube 20, oxygen is introduced into the oxygen pipeline 25, a third valve body 24 is arranged on the oxygen pipeline 25, a fourth slide plate 47 is slidably connected in the third valve body 24, a third through hole 46 interconnected with the inlet end of the oxygen pipeline 25 is processed on the fourth slide plate 47, the fourth slide plate 47 is fixedly connected to the driving mechanism 1, the third valve body 24 is fixedly connected to one end of the third connecting pipe 11, and the other end of the third connecting pipe 11 is fixedly connected to the driving mechanism 1. The bottom outlet end of the combustion reaction inner tube 20 is provided with a discharge pipe 6 interconnected with it, a second valve body 23 is arranged on the discharge pipe 6, a fifth slide plate 50 is slidably connected in the second valve body 23, a fourth through hole 49 interconnected with the discharge pipe 6 is processed on the fifth slide plate 50, the fifth slide plate 50 is fixedly connected to the driving mechanism 1, the second valve body 23 is fixedly connected to one end of the first connecting pipe 4, and the other end of the first connecting pipe 4 is fixedly connected to the driving mechanism 1. The top cover 14 is uniformly processed with second grooves 52 in the circumferential direction for respectively engaging with the second connecting tube 10 , the fourth connecting tube 12 , the third connecting tube 11 and the first connecting tube 4 . The combustion reaction inner tube 20 is provided with an igniter 13 for burning the mixture of carrier gas, oxygen and silicon powder inside the carrier gas pipeline 22 .

[0056] A support plate 18 is provided at the top of the outer cylinder 3, and the support plate 18 is fixedly connected to the top cover 14 through a support rod 27. The driving mechanism 1 is provided on the top cover 14, and the driving mechanism 1 alone drives the second slide plate 41 to slide in the first valve body 21 or the third slide plate 44 to slide in the fourth valve body 26 or the fourth slide plate 47 to slide in the third valve body 24 or the fifth slide plate 50 to slide in the second valve body 23. An upper connecting cylinder 2 located above the outer cylinder 3 is provided between the support plate 18 and the top cover 14. A plurality of third sliding rods 17 are provided along the circumferential direction of the support plate 18, and each third sliding rod 17 is respectively connected to the support plate 18 in a vertical direction for sliding. A fixing ring 31 is connected to the outer cavity in a vertical direction for sliding. The fixing ring 31 is connected to the outer cavity in a vertical direction for sliding. The fixing ring 31 is located below the support plate 18, and a third sliding rod 17 is provided at the top end with a groove that contacts with the driving mechanism 1. The second top plate 37 of the present invention, the bottom end of each third sliding rod 17 is fixedly connected to the fixing ring 31, each third sliding rod 17 is respectively provided with an eighth spring 19, one end of each eighth spring 19 is respectively fixedly connected to the bottom of the support plate 18, and the other end of each eighth spring 19 is respectively fixedly connected to the fixing ring 31, and a plurality of fourth sliding rods 32 are slidably connected to the support plate 18 in a vertical direction, a first top plate 30 that is in conflict with the driving mechanism 1 is provided on the top of one of the fourth sliding rods 32, and a pressure plate 36 located inside the combustion reaction inner tube 20 is provided at the bottom of the plurality of fourth sliding rods 32, and the pressure plate 36 is slidably connected to the inside of the combustion reaction inner tube 20 in a vertical direction, and a ninth spring 33 is respectively provided on each fourth sliding rod 32, one end of each ninth spring 33 is respectively fixedly connected to the bottom of the support plate 18, and the other end of each ninth spring 33 is respectively fixedly connected to the pressure plate 36. A screw rod 34 is threadedly connected to the support plate 18, and the screw rod 34 is rotatably connected to the fourth support frame 35 on the top of the pressure plate 36. A third sleeve 39 located below the pressure plate 36 is fixedly installed at the bottom of the screw rod 34, and the third sleeve 39 is evenly provided with fan blades 38 in the circumferential direction for blowing away the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder 20.

[0057] like Figures 10 to 21As shown, the driving mechanism 1 includes a first motor 101, a first support frame 102, a first contact plate 103, a first sleeve 104, a first fixed plate 105, a rotating ring 106, a second sleeve 107, a second contact plate 108, a first slider 109, a first slide bar 110, a first spring 111, a first baffle 112, a second baffle 113, a second slider 114, a second slide bar 115, a second spring 116, a first sliding hole 117, a second sliding hole 118, a third slider 119, a first contact bar 120, a third sliding hole 121, a fourth sliding hole 122, a second contact bar 123, a fourth slider 124, a fifth sliding hole 125, a third contact bar 126, a fifth slider 127, and a first contact rod 128. The third spring 128, the fourth resistance rod 129, the sixth slider 130, the sixth sliding hole 131, the first inclined resistance surface 132, the third resistance plate 133, the second inclined resistance surface 134, the arc resistance surface 135, the first clamping groove 136, the first connecting line 137, the second connecting line 138, the third connecting line 139, the fourth connecting line 140, the third support frame 141, the resistance wheel 142, the clamping rod 143, the first slide plate 144, the resistance head 145, the connecting rod 146, the fixing rod 147, the fourth spring 148, the electric cylinder 149, the fifth spring 150, the sixth spring 151, the seventh spring 152, the trapezoidal plate 153, the support plate 154, and the igniter switch 155 are connected to form a structure.

[0058] like Fig.14 , Fig.16 , Fig.18 As shown, the driving mechanism 1 is as follows: a first fixed plate 105 is fixedly mounted on the top cover 14, a first support frame 102 is arranged on the top cover 14, a first motor 101 driving a rotating ring 106 is arranged on the first support frame 102, the rotating ring 106 is located above the first fixed plate 105, the rotating ring 106 is rotatably connected to the first fixed plate 105, a third sliding hole 121, a fourth sliding hole 122, a fifth sliding hole 125 and a sixth sliding hole 131 are uniformly processed in the circumferential direction of the first fixed plate 105, and a third sliding hole 121 is slidably connected to the third sliding hole 121. The third slider 119 is provided with a first resistance rod 120, one side of the third slider 119 is fixedly connected to the inner end surface of the third sliding hole 121 through the fifth spring 150, and the other side of the third slider 119 is fixedly connected to the third slider 44 through the first connecting line 137, the first connecting line 137 is located inside the fourth connecting pipe 12, and an eleventh spring 45 is provided on the outer circumference of the first connecting line 137, one end of the eleventh spring 45 is fixedly connected to the third slider 44, and the other end of the eleventh spring 45 is fixedly connected to the fourth valve body 26.

[0059] like Fig.14 , Fig.16 , Fig.17As shown, a fourth slider 124 is slidably connected in the fourth sliding hole 122, a second resistance rod 123 is arranged on the fourth slider 124, one side of the fourth slider 124 is fixedly connected to the inner end surface of the fourth sliding hole 122 through a sixth spring 151, and the other side of the fourth slider 124 is fixedly connected to the second slider 41 through a fourth connecting line 140, the fourth connecting line 140 is located inside the second connecting tube 10, a tenth spring 40 is arranged on the fourth connecting line 140, one end of the tenth spring 40 is fixedly connected to the second slider 41, and the other end of the tenth spring 40 is fixedly connected to the first valve body 21.

[0060] like Fig.14 , Fig.16 , Fig. 20 As shown, a fifth slider 127 is slidably connected in the fifth sliding hole 125, and a third resistance rod 126 is arranged on the fifth slider 127. One side of the fifth slider 127 is fixedly connected to the inner end surface of the fifth sliding hole 125 through a third spring 128, and the other side of the fifth slider 127 is fixedly connected to the fifth slider 50 through a third connecting line 139. The third connecting line 139 is located inside the first connecting tube 4. A thirteenth spring 51 is arranged on the third connecting line 139, and one end of the thirteenth spring 51 is fixedly connected to the fifth slider 50, and the other end of the thirteenth spring 51 is fixedly connected to the second valve body 23.

[0061] like Fig.14 , Fig.16 , Fig.19 As shown, a sixth slider 130 is slidably connected in the sixth sliding hole 131, a fourth resisting rod 129 is arranged on the sixth slider 130, one side of the sixth slider 130 is fixedly connected to the inner end surface of the sixth sliding hole 131 through a seventh spring 152, and the other side of the sixth slider 130 is fixedly connected to the fourth slider 47 through a second connecting line 138, the second connecting line 138 is located inside the third connecting tube 11, a twelfth spring 48 is arranged on the second connecting line 138, one end of the twelfth spring 48 is fixedly connected to the fourth slider 47, and the other end of the twelfth spring 48 is fixedly connected to the third valve body 24.

[0062] like Fig.15 As shown, a support plate 154 is provided on the rotating ring 106, and a first slot 136 which is engaged with the ignition assembly is processed on the support plate 154; a third contact plate 133 which is located above the support plate 154 is provided on the rotating ring 106; a first contact assembly which contacts with the third contact plate 133 is provided on one side of the top cover 14; a second contact assembly which contacts with the third contact plate 133 is provided on the other side of the top cover 14; a trapezoidal plate 153 which is located below the support plate 154 is provided on the rotating ring 106; the trapezoidal plate 153 is processed with a first inclined contact surface 132, an arc contact surface 135 and a second inclined contact surface 134 which contact with the first contact rod 120, the second contact rod 123, the third contact rod 126 and the fourth contact rod 129 respectively.

[0063] like Fig.12 As shown, the first resistance component is: a second sleeve 107 is provided on one side of the top cover 14, a first slide bar 110 is slidably connected inside the second sleeve 107 along the vertical direction, second slide holes 118 are respectively processed on both sides of the second sleeve 107, first sliders 109 slidably connected to the second slide holes 118 along the vertical direction are respectively provided on both sides of the first slide bar 110, a first spring 111 is provided on the first slide bar 110, one end of the first spring 111 is fixedly connected to the bottom of the first slide bar 110, and the other end of the first spring 111 is fixedly connected to the bottom surface of the top cover 14, a second resistance plate 108 that resists the second top plate 37 at the top of the third slide bar 17 is provided on the top of the first slide bar 110, and a first baffle 112 that resists the third resistance plate 133 is provided on the second resistance plate 108.

[0064] like Fig.13 As shown, the second resistance component is: a first sleeve 104 is provided on the other side of the top cover 14, a second slide bar 115 is slidably connected to the inside of the first sleeve 104 along the vertical direction, first slide holes 117 are respectively processed on both sides of the first sleeve 104, and second slide blocks 114 slidably connected to the first slide holes 117 along the vertical direction are respectively provided on both sides of the second slide bar 115, a second spring 116 is provided on the second slide bar 115, one end of the second spring 116 is fixedly connected to the bottom of the second slide bar 115, and the other end of the second spring 116 is fixedly connected to the bottom surface of the top cover 14, a first resistance plate 103 that resists the first top plate 30 at the top of the fourth slide bar 32 is provided on the top of the second slide bar 115, and a second baffle 113 that resists the third resistance plate 133 is provided on the first resistance plate 103.

[0065] like Fig.16 , Fig.21 As shown, the ignition assembly is as follows: an electric cylinder 149 is arranged on the top cover 14, and the output end of the electric cylinder 149 is fixedly connected to the first slide plate 144 through a connecting rod 146; a third support frame 141 is arranged on the top cover 14, and the third support frame 141 is provided with fixing rods 147 located on both sides of the connecting rod 146, and the fixing rods 147 are slidably connected with the first slide plate 144 along the horizontal direction; a fourth spring 148 is arranged on the fixing rod 147, and one end of the fourth spring 148 is fixedly connected to the first slide plate 144, and the other end of the fourth spring 148 is fixedly connected to the fixing rod 147; a clamping rod 143 is arranged on the first slide plate 144, and a contact wheel 142 clamped with the first clamping groove 136 is arranged at the bottom of the clamping rod 143; a contact head 145 that contacts with the igniter switch 155 on the third support frame 141 is arranged on the first slide plate 144, and the igniter switch 155 is electrically connected to the igniter 13.

[0066] A preparation method of a spherical silicon dioxide powder preparation device of this embodiment comprises the following steps:

[0067] S1, silicon powder quantitatively enters the outer cavity between the outer cylinder 3 and the combustion reaction inner cylinder 20, the driving mechanism 1 drives the carrier gas pipeline 22 to be connected, and the carrier gas enters the outer cavity between the outer cylinder 3 and the combustion reaction inner cylinder 20 through the carrier gas pipeline 22, the driving mechanism 1 drives the second feed port 29 of the combustion reaction inner cylinder 20 to open, and the carrier gas and silicon powder enter the combustion reaction inner cylinder 20 through the second feed port 29, the driving mechanism 1 drives the oxygen pipeline 25 to be connected, and oxygen enters the combustion reaction inner cylinder 20 through the oxygen pipeline 25, and the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder 20 are blown away to obtain a mixture in a blown state.

[0068] The method for quantitatively entering the silicon powder into the outer cavity between the outer cylinder 3 and the combustion reaction inner cylinder 20 is as follows: the output shaft of the second motor 7 drives the turntable 15 in the second fixed disk 8 to rotate, and the multiple connecting holes 16 on the turntable 15 are respectively and sequentially connected with the first feed port 28 of the second fixed disk 8, and the silicon powder in the silicon powder tank 9 enters the outer cavity between the outer cylinder 3 and the combustion reaction inner cylinder 20 through the first feed port 28 and the connecting holes 16 in sequence;

[0069] like Fig. 22 As shown, the method for the driving mechanism 1 to independently drive the carrier gas pipeline 22 to connect is: the output shaft of the first motor 101 drives the rotating ring 106 to rotate, the trapezoidal plate 153 on the rotating ring 106 rotates, the second resistance rod 123 on the fourth slider 124 resists the first inclined resistance surface 132 on the trapezoidal plate 153 and moves to resist the circular arc resistance surface 135 on the trapezoidal plate 153, the second resistance rod 123 drives the fourth slider 124 to slide in the fourth sliding hole 122, the fourth slider 124 drives the second slide plate 41 to slide in the first valve body 21 through the fourth connecting line 140, the first through hole 42 on the second slide plate 41 moves to be interconnected with the carrier gas pipeline 22, the second feed port 29, the oxygen pipeline 25 and the discharge pipe 6 are closed, and the carrier gas is interconnected with the carrier gas pipeline 22 and enters the outer cavity between the outer cylinder 3 and the combustion reaction inner cylinder 20.

[0070] like Fig.23As shown, the method in which the driving mechanism 1 drives the second feed port 29 of the combustion reaction inner cylinder 20 to open alone is as follows: when the carrier gas enters the outer cavity between the outer cylinder 3 and the combustion reaction inner cylinder 20, the fixing ring 31 in the outer cavity drives the third slide bar 17 to move in the vertical direction on the support plate 18, and the support bar 27 at the top end of one of the third slide bars 17 moves to contact with the bottom of the second contact plate 108, and the second contact plate 108 drives the first slide block 109 on the first slide bar 110 to move upward in the vertical direction in the second slide hole 118 on the second sleeve 107, and at the same time, the first slide bar 110 moves upward in the vertical direction on the top cover 14, and the second contact plate 108 drives the first baffle plate 112 to move upward in the vertical direction, and the first baffle plate 112 and The third contact plate 133 does not contact, the rotating ring 106 continues to drive the trapezoidal plate 153 to rotate, the first contact rod 120 on the third slider 119 contacts the second inclined contact surface 134 on the trapezoidal plate 153 and moves to contact the arc contact surface 135 on the trapezoidal plate 153, the first contact rod 120 drives the third slider 119 to slide in the third sliding hole 121, the third slider 119 drives the third slide plate 44 to slide in the fourth valve body 26 through the first connecting line 137, the second through hole 43 on the third slide plate 44 is connected to the second feed port 29 on the combustion reaction inner cylinder 20, the carrier gas and silicon powder enter the combustion reaction inner cylinder 20 through the second feed port 29, and the carrier gas pipeline 22, the oxygen pipeline 25 and the discharge pipe 6 are closed;

[0071] like Fig.24 As shown, the method for the driving mechanism 1 to independently drive the oxygen pipeline 25 to connect is: the rotating ring 106 continues to drive the trapezoidal plate 153 to rotate, the fourth resistance rod 129 on the sixth slider 130 resists the second inclined resistance surface 134 on the trapezoidal plate 153 and moves to resist the arc resistance surface 135 on the trapezoidal plate 153, the fourth resistance rod 129 drives the sixth slider 130 to slide in the sixth sliding hole 131, the sixth slider 130 drives the fourth slide plate 47 to slide in the third valve body 24 through the second connecting line 138, the third through hole 46 on the fourth slide plate 47 moves to be interconnected with the oxygen pipeline 25, the carrier gas pipeline 22, the second feed port 29 and the discharge pipe 6 are closed, and oxygen enters the combustion reaction inner cylinder 20 through the oxygen pipeline 25.

[0072] S2, the driving mechanism 1 alone drives the igniter 13 to ignite, and the mixture of the carrier gas, oxygen and silicon powder in the combustion reaction inner tube 20 in a blown state is fully burned to obtain liquid silicon dioxide droplets. The driving mechanism 1 alone drives the discharge pipe 6 to be connected, and the liquid silicon dioxide droplets in the combustion reaction inner tube 20 flow out through the discharge pipe 6.

[0073] like Fig.25As shown, the method in which the driving mechanism 1 drives the igniter 13 alone to ignite is as follows: when the carrier gas, oxygen and silicon powder enter the combustion reaction inner cylinder 20, the pressure plate 36 inside the combustion reaction inner cylinder 20 drives the fourth slide bar 32 to move in the vertical direction on the support plate 18, and the pressure plate 36 drives the screw rod 34 to move in the vertical direction. The screw rod 34 is threadedly connected to the support plate 18 and drives the screw rod 34 to rotate at the same time, and the multiple blades 38 of the third sleeve 39 at the bottom of the screw rod 34 rotate to blow away the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder 20, and the first top plate 30 at the top of one of the fourth slide rods 32 moves to contact with the bottom of the first contact plate 103, and the first contact plate 103 drives the second slide block 114 on the second slide rod 115 to move in the first slide hole 117 of the first sleeve 104 in the vertical direction. The second slide bar 115 moves upward on the top cover 14 in a vertical direction, and the first contact plate 103 drives the second baffle plate 113 to move upward in a vertical direction. The second baffle plate 113 does not conflict with the third contact plate 133, and the rotating ring 106 continues to rotate. The output end of the electric cylinder 149 drives the first slide plate 144 to slide horizontally on the fixed rod 147 through the connecting rod 146. The first slide plate 144 drives the contact wheel 142 to engage with the first slot 136 of the rotating ring 106 through the clamping rod 143. At the same time, the contact head 145 moves to conflict with the igniter switch 155. The igniter switch 155 controls the igniter 13 to open, and the carrier gas pipeline 22, the oxygen pipeline 25, the second feed port 29 and the discharge pipe 6 are closed to ignite the carrier gas, oxygen and silicon powder inside the combustion reaction inner cylinder 20.

[0074] like Fig.26 As shown, the method for the driving mechanism 1 to independently drive the discharge pipe 6 to connect is: the rotating ring 106 continues to drive the trapezoidal plate 153 to rotate, the third resistance rod 126 on the fifth slider 127 contacts the second inclined resistance surface 134 of the trapezoidal plate 153 and moves to contact the arc resistance surface 135 of the trapezoidal plate 153, the third resistance rod 126 drives the fifth slider 127 to slide in the fifth sliding hole 125, the fifth slider 127 drives the fifth slide plate 50 to slide in the second valve body 23 through the third connecting line 139, the fourth through hole 49 on the fifth slide plate 50 moves to be connected with the discharge pipe 6, and the liquid silica droplets in the combustion reaction inner cylinder 20 flow out through the discharge pipe 6.

[0075] S3, cooling, separating and collecting the outflowing liquid silicon dioxide droplets in sequence with a bag filter to obtain spherical silicon dioxide powder.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A device for preparing spherical silicon dioxide powder, characterized in that: An outer cylinder (3) is arranged on the second support frame (5), a combustion reaction inner cylinder (20) is arranged inside the outer cylinder (3), an outer cavity is formed between the outer cylinder (3) and the combustion reaction inner cylinder (20), silicon powder is fed into the outer cavity, a carrier gas pipeline (22) is arranged on the outer cylinder (3) and is communicated with the outer cavity, carrier gas is introduced into the carrier gas pipeline (22), a first valve body (21) is arranged on the carrier gas pipeline (22), a second slide plate (41) is slidably connected to the first valve body (21), and a second valve plate (41) is slidably connected to the first valve body (21). The second slide plate (41) is processed with a first through hole (42) which is interconnected with the inlet end of the carrier gas pipeline (22); the second slide plate (41) is fixedly connected to the driving mechanism (1); the side wall of the combustion reaction inner cylinder (20) is processed with a second feed port (29) which is interconnected with the outer cavity; the combustion reaction inner cylinder (20) is provided with a fourth valve body (26); the fourth valve body (26) is slidably connected with a third slide plate (44); the third slide plate (44) is processed with a second feed port (29) which is interconnected with the second feed port (29); The second through hole (43) is connected to the combustion reaction inner cylinder (20), the second through hole (43) is fixedly connected to the driving mechanism (1), the side wall of the combustion reaction inner cylinder (20) is processed with an oxygen pipeline (25) which is connected to the inside of the combustion reaction inner cylinder (20), oxygen is introduced into the oxygen pipeline (25), a third valve body (24) is arranged on the oxygen pipeline (25), a fourth slide plate (47) is slidably connected to the inside of the third valve body (24), and a fourth slide plate (47) is processed on the fourth slide plate (47) which is connected to the inlet end of the oxygen pipeline (25). The fourth slide plate (47) is fixedly connected to the driving mechanism (1); the bottom outlet end of the combustion reaction inner cylinder (20) is provided with a discharge pipe (6) which is interconnected with the discharge pipe (6); a second valve body (23) is provided on the discharge pipe (6); a fifth slide plate (50) is slidably connected inside the second valve body (23); a fourth through hole (49) which is interconnected with the discharge pipe (6) is processed on the fifth slide plate (50); and the fifth slide plate (50) is fixedly connected to the driving mechanism (1); A support plate (18) is arranged at the top of the outer cylinder (3), and the support plate (18) is fixedly connected to the top cover (14) via a support rod (27). The driving mechanism (1) is arranged on the top cover (14), and the driving mechanism (1) alone drives the second slide plate (41) to slide in the first valve body (21), the third slide plate (44) to slide in the fourth valve body (26), the fourth slide plate (47) to slide in the third valve body (24), or the fifth slide plate (50) to slide in the second valve body (23). A support plate (18) is arranged between the support plate (18) and the top cover (14). The upper connecting cylinder (2) above the outer cylinder (3) and the support disk (18) are provided with a plurality of third sliding rods (17) along the circumferential direction, each of the third sliding rods (17) is respectively connected to the support disk (18) in a sliding manner in a vertical direction, a fixing ring (31) is connected to the outer cavity in a sliding manner in a vertical direction, the fixing ring (31) is connected to the outer cavity in a sliding manner in a vertical direction, the fixing ring (31) is located below the support disk (18), a second top plate (37) that contacts the driving mechanism (1) is provided at the top of one of the third sliding rods (17), and each of the third sliding rods (17) is connected to the outer cavity in a sliding manner in a vertical direction. The bottom ends are fixedly connected to the fixing rings (31), each third slide bar (17) is respectively provided with an eighth spring (19), one end of each eighth spring (19) is respectively fixedly connected to the bottom of the support plate (18), and the other end of each eighth spring (19) is respectively fixedly connected to the fixing ring (31), and a plurality of fourth slide bars (32) are slidably connected to the support plate (18) in a vertical direction, wherein a first top plate (30) against which the driving mechanism (1) abuts is provided at the top of one of the fourth slide bars (32), and a plurality of fourth slide bars (32) are respectively provided with a bottom plate located at A pressure plate (36) is arranged inside the combustion reaction inner cylinder (20), and the pressure plate (36) is slidably connected to the inside of the combustion reaction inner cylinder (20) in a vertical direction. A ninth spring (33) is arranged on each fourth slide bar (32), and one end of each ninth spring (33) is fixedly connected to the bottom of the support plate (18), and the other end of each ninth spring (33) is fixedly connected to the pressure plate (36). An igniter (13) is arranged on the combustion reaction inner cylinder (20) for burning a mixture of carrier gas, oxygen and silicon powder inside the carrier gas pipeline (22).

2. The device for preparing spherical silicon dioxide powder according to claim 1, characterized in that: A second fixed disk (8) is arranged on one side outside the outer cylinder (3), a silicon powder tank (9) for storing silicon powder is arranged on the upper end of the second fixed disk (8), a first feed port (28) which is interconnected with the outlet end of the silicon powder tank (9) is processed on the upper end of the second fixed disk (8), the outlet end of the second fixed disk (8) is interconnected with the outer cavity, a second motor (7) which drives the rotating disk (15) to rotate is arranged at the bottom of the second fixed disk (8), the rotating disk (15) is located inside the second fixed disk (8), and connecting holes (16) which are respectively interconnected with the first feed port (28) and the outer cavity are processed uniformly in the circumferential direction of the rotating disk (15).

3. The device for preparing spherical silicon dioxide powder according to claim 1, characterized in that: A screw rod (34) is threadedly connected to the support plate (18), and the screw rod (34) is rotatably connected to a fourth support frame (35) on the top of the pressure plate (36). A third sleeve (39) located below the pressure plate (36) is fixedly installed at the bottom of the screw rod (34), and fan blades (38) are evenly arranged in the circumferential direction of the third sleeve (39) for blowing away the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder (20).

4. The device for preparing spherical silicon dioxide powder according to claim 1, characterized in that: The first valve body (21) is fixedly connected to one end of the second connecting tube (10), and the other end of the second connecting tube (10) is fixedly connected to the driving mechanism (1); the fourth valve body (26) is fixedly connected to one end of the fourth connecting tube (12), and the other end of the fourth connecting tube (12) is fixedly connected to the driving mechanism (1); the third valve body (24) is fixedly connected to one end of the third connecting tube (11), and the other end of the third connecting tube (11) is fixedly connected to the driving mechanism (1); the second valve body (23) is fixedly connected to one end of the first connecting tube (4), and the other end of the first connecting tube (4) is fixedly connected to the driving mechanism (1); and the top cover (14) is uniformly processed in the circumferential direction with second clamping grooves (52) respectively clamped with the second connecting tube (10), the fourth connecting tube (12), the third connecting tube (11), and the first connecting tube (4).

5. The device for preparing spherical silicon dioxide powder according to claim 4, characterized in that: The driving mechanism (1) comprises: a first fixed disk (105) is fixedly mounted on the top cover (14); a first support frame (102) is arranged on the top cover (14); a first motor (101) for driving a rotating ring (106) to rotate is arranged on the first support frame (102); the rotating ring (106) is located above the first fixed disk (105); the rotating ring (106) is rotatably connected to the first fixed disk (105); a third sliding hole (121), a fourth sliding hole (122), a fifth sliding hole (125) and a sixth sliding hole (131) are uniformly processed in the circumferential direction of the first fixed disk (105); a sliding hole (121) is slidably connected to the rotating ring (106); A third slider (119) is provided on the third slider (119), a first resisting rod (120) is provided on the third slider (119), one side of the third slider (119) is fixedly connected to the inner end surface of the third sliding hole (121) through a fifth spring (150), the other side of the third slider (119) is fixedly connected to the third slider (44) through a first connecting line (137), the first connecting line (137) is located inside the fourth connecting pipe (12), an eleventh spring (45) is provided on the outer circumference of the first connecting line (137), one end of the eleventh spring (45) is fixedly connected to the third slider (44), and the other end of the eleventh spring (45) is fixedly connected to the fourth valve body (26); A fourth sliding block (124) is slidably connected in the fourth sliding hole (122), a second resisting rod (123) is arranged on the fourth sliding block (124), one side of the fourth sliding block (124) is fixedly connected to the inner end surface of the fourth sliding hole (122) via a sixth spring (151), the other side of the fourth sliding block (124) is fixedly connected to the second sliding block (41) via a fourth connecting line (140), the fourth connecting line (140) is located inside the second connecting tube (10), a tenth spring (40) is arranged on the fourth connecting line (140), one end of the tenth spring (40) is fixedly connected to the second sliding block (41), and the other end of the tenth spring (40) is fixedly connected to the first valve body (21); A fifth sliding block (127) is slidably connected in the fifth sliding hole (125), a third resisting rod (126) is arranged on the fifth sliding block (127), one side of the fifth sliding block (127) is fixedly connected to the inner end surface of the fifth sliding hole (125) via a third spring (128), the other side of the fifth sliding block (127) is fixedly connected to the fifth sliding block (50) via a third connecting line (139), the third connecting line (139) is located inside the first connecting tube (4), a thirteenth spring (51) is arranged on the third connecting line (139), one end of the thirteenth spring (51) is fixedly connected to the fifth sliding block (50), and the other end of the thirteenth spring (51) is fixedly connected to the second valve body (23); A sixth sliding block (130) is slidably connected in the sixth sliding hole (131), a fourth resisting rod (129) is arranged on the sixth sliding block (130), one side of the sixth sliding block (130) is fixedly connected to the inner end surface of the sixth sliding hole (131) via a seventh spring (152), the other side of the sixth sliding block (130) is fixedly connected to the fourth sliding block (47) via a second connecting line (138), the second connecting line (138) is located inside the third connecting tube (11), a twelfth spring (48) is arranged on the second connecting line (138), one end of the twelfth spring (48) is fixedly connected to the fourth sliding block (47), and the other end of the twelfth spring (48) is fixedly connected to the third valve body (24); A support plate (154) is arranged on the rotating ring (106), and a first slot (136) for engaging with the ignition assembly is processed on the support plate (154); a third contact plate (133) located above the support plate (154) is arranged on the rotating ring (106); a first contact assembly for contacting with the third contact plate (133) is arranged on one side of the top cover (14); a second contact assembly for contacting with the third contact plate (133) is arranged on the other side of the top cover (14); a trapezoidal plate (153) located below the support plate (154) is arranged on the rotating ring (106), and the trapezoidal plate (153) is processed with a first inclined contact surface (132), an arc contact surface (135), and a second inclined contact surface (134) for contacting with the first contact rod (120), the second contact rod (123), the third contact rod (126), and the fourth contact rod (129), respectively.

6. The device for preparing spherical silicon dioxide powder according to claim 5, characterized in that: The first resistance component is as follows: a second sleeve (107) is arranged on one side of the top cover (14); a first slide bar (110) is slidably connected inside the second sleeve (107) in a vertical direction; second slide holes (118) are respectively processed on both sides of the second sleeve (107); first slide blocks (109) are respectively arranged on both sides of the first slide bar (110) and are slidably connected to the second slide holes (118) in a vertical direction; a first spring (111) is arranged on the first slide bar (110); one end of the first spring (111) is fixedly connected to the bottom of the first slide bar (110); the other end of the first spring (111) is fixedly connected to the bottom surface of the top cover (14); a second resistance plate (108) is arranged on the top of the first slide bar (110) and is in resistance to the second top plate (37) at the top of the third slide bar (17); and a first baffle plate (112) is arranged on the second resistance plate (108) and is in resistance to the third resistance plate (133); The second resistance component is as follows: a first sleeve (104) is arranged on the other side of the top cover (14); a second slide bar (115) is slidably connected to the inside of the first sleeve (104) in a vertical direction; first slide holes (117) are respectively processed on both sides of the first sleeve (104); second slide blocks (114) are respectively slidably connected to the first slide holes (117) in a vertical direction on both sides of the second slide bar (115); a second spring (116) is arranged on the second slide bar (115); one end of the second spring (116) is fixedly connected to the bottom of the second slide bar (115); the other end of the second spring (116) is fixedly connected to the bottom surface of the top cover (14); a first resistance plate (103) is arranged on the top of the second slide bar (115) to resist the first top plate (30) at the top of the fourth slide bar (32); and a second baffle plate (113) is arranged on the first resistance plate (103) to resist the third resistance plate (133).

7. The device for preparing spherical silicon dioxide powder according to claim 5, characterized in that: The ignition assembly comprises: an electric cylinder (149) is arranged on the top cover (14); the output end of the electric cylinder (149) is fixedly connected to the first slide plate (144) through a connecting rod (146); a third support frame (141) is arranged on the top cover (14); the third support frame (141) is provided with fixing rods (147) located on both sides of the connecting rod (146); the fixing rods (147) are connected to the first slide plate (144) in a sliding manner in a horizontal direction; a fourth spring (148) is arranged on the fixing rod (147); the fourth spring (148) One end of the fourth spring (148) is fixedly connected to the first slide plate (144), and the other end of the fourth spring (148) is fixedly connected to the fixed rod (147). The first slide plate (144) is provided with a clamping rod (143), and the bottom of the clamping rod (143) is provided with a contact wheel (142) clamped with the first clamping groove (136). The first slide plate (144) is provided with a contact head (145) that contacts the igniter switch (155) on the third support frame (141), and the igniter switch (155) is electrically connected to the igniter (13).

8. A preparation method using the spherical silicon dioxide powder preparation device according to claim 1, characterized in that: The following steps are involved: S1, silicon powder quantitatively enters the outer cavity between the outer cylinder (3) and the combustion reaction inner cylinder (20), the driving mechanism (1) drives the carrier gas pipeline (22) to communicate, the carrier gas enters the outer cavity between the outer cylinder (3) and the combustion reaction inner cylinder (20) through the carrier gas pipeline (22), the driving mechanism (1) drives the second feed port (29) of the combustion reaction inner cylinder (20) to open, the carrier gas and silicon powder enter the combustion reaction inner cylinder (20) through the second feed port (29), the driving mechanism (1) drives the oxygen pipeline (25) to communicate, oxygen enters the combustion reaction inner cylinder (20) through the oxygen pipeline (25), and the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder (20) are blown away to obtain a mixture in a blown away state; S2, the driving mechanism (1) drives the igniter (13) alone to ignite, and the mixture of the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder (20) in a blown-off state is fully burned to obtain liquid silicon dioxide droplets, and the driving mechanism (1) drives the discharge pipe (6) alone to communicate, and the liquid silicon dioxide droplets in the combustion reaction inner cylinder (20) flow out through the discharge pipe (6); S3, cooling, separating and collecting the outflowing liquid silicon dioxide droplets in sequence with a bag filter to obtain spherical silicon dioxide powder.

9. The method for preparing spherical silicon dioxide powder according to claim 8, characterized in that: The method for quantitatively allowing silicon powder to enter the outer cavity between the outer cylinder (3) and the combustion reaction inner cylinder (20) in step S1 is as follows: the output shaft of the second motor (7) drives the rotating disk (15) in the second fixed disk (8) to rotate, and the plurality of connecting holes (16) on the rotating disk (15) are respectively and sequentially connected to the first feed port (28) of the second fixed disk (8), and the silicon powder in the silicon powder tank (9) enters the outer cavity between the outer cylinder (3) and the combustion reaction inner cylinder (20) through the first feed port (28) and the connecting holes (16) in sequence; The method for the driving mechanism (1) in step S1 to independently drive the carrier gas pipeline (22) to communicate is as follows: the output shaft of the first motor (101) drives the rotating ring (106) to rotate, the trapezoidal plate (153) on the rotating ring (106) rotates, the second contact rod (123) on the fourth slider (124) contacts the first inclined contact surface (132) on the trapezoidal plate (153) and moves to contact the arc contact surface (135) on the trapezoidal plate (153), and the second contact rod (123) drives the fourth slider (124) to rotate. The slider (124) slides in the fourth slide hole (122), and the fourth slider (124) drives the second slider (41) to slide in the first valve body (21) through the fourth connecting line (140). The first through hole (42) on the second slider (41) moves to be connected with the carrier gas pipeline (22), the second feed port (29), the oxygen pipeline (25) and the discharge pipe (6) are closed, and the carrier gas and the carrier gas pipeline (22) are connected to each other and enter the outer cavity between the outer cylinder (3) and the combustion reaction inner cylinder (20); The method for the driving mechanism (1) in step S1 to independently drive the second feed port (29) of the combustion reaction inner cylinder (20) to open is as follows: when the carrier gas enters the outer cavity between the outer cylinder (3) and the combustion reaction inner cylinder (20), the fixing ring (31) in the outer cavity drives the third slide bar (17) to move in a vertical direction on the support plate (18), and the support bar (27) at the top end of one of the third slide bars (17) moves to contact with the bottom of the second contact plate (108), and the second contact plate (108) drives the first slide bar (109) on the first slide bar (110) to move upward in a vertical direction in the second slide hole (118) on the second sleeve (107), and at the same time, the first slide bar (110) moves upward in a vertical direction on the top cover (14), and the second contact plate (108) drives the first baffle plate (112) to move upward in a vertical direction, and the first baffle plate (112) and the third slide bar (17) are moved upward in a vertical direction. The contact plate (133) does not contact, the rotating ring (106) continues to drive the trapezoidal plate (153) to rotate, the first contact rod (120) on the third slider (119) contacts the second inclined contact surface (134) on the trapezoidal plate (153) and moves to contact the arc contact surface (135) on the trapezoidal plate (153), the first contact rod (120) drives the third slider (119) to slide in the third sliding hole (121), the third slider (119) drives the third slide plate (44) to slide in the fourth valve body (26) through the first connecting line (137), the second through hole (43) on the third slide plate (44) is connected to the second feed port (29) on the combustion reaction inner cylinder (20), the carrier gas and silicon powder enter the combustion reaction inner cylinder (20) through the second feed port (29), and the carrier gas pipeline (22), the oxygen pipeline (25) and the discharge pipe (6) are closed; The method for the driving mechanism (1) to independently drive the oxygen pipeline (25) to communicate in step S1 is as follows: the rotating ring (106) continues to drive the trapezoidal plate (153) to rotate, the fourth resistance rod (129) on the sixth slider (130) resists the second inclined resistance surface (134) on the trapezoidal plate (153) and moves to resist the arc resistance surface (135) on the trapezoidal plate (153), the fourth resistance rod (129) drives the sixth slider (130) to slide in the sixth sliding hole (131), the sixth slider (130) drives the fourth slide plate (47) to slide in the third valve body (24) through the second connecting line (138), the third through hole (46) on the fourth slide plate (47) moves to communicate with the oxygen pipeline (25), the carrier gas pipeline (22), the second feed port (29) and the discharge pipe (6) are closed, and oxygen enters the combustion reaction inner cylinder (20) through the oxygen pipeline (25).

10. The method for preparing spherical silicon dioxide powder according to claim 8, characterized in that: The method in which the driving mechanism (1) alone drives the igniter (13) to ignite in step S2 is as follows: when the carrier gas, oxygen and silicon powder enter the combustion reaction inner cylinder (20), the pressure plate (36) inside the combustion reaction inner cylinder (20) drives the fourth slide bar (32) to move in a vertical direction on the support plate (18), and the pressure plate (36) drives the screw rod (34) to move in the vertical direction. The screw rod (34) is threadedly connected to the support plate (18) and drives the screw rod (34) to move in the vertical direction. 4) rotates, and the plurality of blades (38) of the third sleeve (39) at the bottom of the screw rod (34) rotate to blow away the carrier gas, oxygen and silicon powder in the combustion reaction inner cylinder (20). The first top plate (30) at the top of one of the fourth sliding rods (32) moves to contact the bottom of the first contact plate (103), and the first contact plate (103) drives the second sliding block (114) on the second sliding rod (115) to move vertically in the first sliding hole (117) of the first sleeve (104). The first contact plate (103) drives the second baffle plate (113) to move upward in the vertical direction, and the second baffle plate (113) does not contact the third contact plate (133). The rotating ring (106) continues to rotate. The output end of the electric cylinder (149) drives the first slide plate (144) to slide horizontally on the fixed rod (147) through the connecting rod (146). The plate (144) drives the abutment wheel (142) to engage with the first engaging groove (136) of the rotating ring (106) through the engaging rod (143), and at the same time the abutment head (145) moves to engage with the igniter switch (155), the igniter switch (155) controls the igniter (13) to open, the carrier gas pipeline (22), the oxygen pipeline (25), the second feed port (29) and the discharge pipe (6) to close, and the carrier gas, oxygen and silicon powder inside the combustion reaction inner cylinder (20) are ignited; The method in which the driving mechanism (1) alone drives the discharge pipe (6) to communicate in step S2 is as follows: the rotating ring (106) continues to drive the trapezoidal plate (153) to rotate, the third resistance rod (126) on the fifth slider (127) contacts the second inclined resistance surface (134) of the trapezoidal plate (153) and moves to contact the arc resistance surface (135) of the trapezoidal plate (153), the third resistance rod (126) drives the fifth slider (127) to slide in the fifth sliding hole (125), the fifth slider (127) drives the fifth slide plate (50) to slide in the second valve body (23) through the third connecting line (139), the fourth through hole (49) on the fifth slide plate (50) moves to communicate with the discharge pipe (6), and the liquid silicon dioxide droplets in the combustion reaction inner cylinder (20) flow out through the discharge pipe (6).

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