CN112169695A - Device and method for reducing wall attachment in high-temperature spheroidization of silicon dioxide microspheres - Google Patents
Device and method for reducing wall attachment in high-temperature spheroidization of silicon dioxide microspheres Download PDFInfo
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- CN112169695A CN112169695A CN202010824842.4A CN202010824842A CN112169695A CN 112169695 A CN112169695 A CN 112169695A CN 202010824842 A CN202010824842 A CN 202010824842A CN 112169695 A CN112169695 A CN 112169695A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 15
- 239000004005 microsphere Substances 0.000 title abstract description 14
- 235000012239 silicon dioxide Nutrition 0.000 title abstract description 14
- 239000002826 coolant Substances 0.000 claims abstract description 80
- 238000003860 storage Methods 0.000 claims abstract description 61
- 239000007789 gas Substances 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000003351 stiffener Substances 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000002950 deficient Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 description 6
- 230000001154 acute effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000003018 immunoassay Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
Abstract
The invention discloses a device and a method for reducing wall attachment in high-temperature spheroidization of silicon dioxide microspheres, which relate to the technical field of production of silicon dioxide microspheres and comprise spheroidizing equipment and a refrigerating machine, wherein the refrigerating machine is connected and provided with a cold storage box, a storage box is arranged in the cold storage box, a cold feeding assembly is connected and arranged between the storage box and the spheroidizing equipment, and a cooling medium is arranged in the storage box, and the method comprises the following steps: the method comprises the following steps: preparing a cooling medium in a cooling state; step two: conveying a cooling medium; step three: the cooling medium is set to be combustible or combustion-supporting gas such as methane or oxygen, the shell wall of the spheroidizing equipment is cooled necessarily to prevent wall sticking, effective edge temperature can be kept, and defective products are reduced.
Description
Technical Field
The invention relates to the technical field of production of silica microspheres, in particular to a device and a method for reducing wall attachment in high-temperature spheroidization of silica microspheres.
Background
The silicon dioxide microsphere is a multifunctional special organic silicon resin microsphere, is snowy white regular free-flowing spherical fine powder, has a three-dimensional cross-linked reticular molecular structure, presents excellent heat resistance and dispersion performance, has wide application and a plurality of application fields, is particularly suitable for and widely applied to the fields of lamp tubes, lamp boxes, flat liquid crystal light diffusion plates and the like, is surface-modified with silicon hydroxyl groups, can be coupled with protein covalent bonds, has less non-specific adsorption, can resist high temperature of 1000 ℃, is stable in organic solvent, is dissolved in strong alkali solution, has the particle size of 0.1-1 micron, can have different surface charges, has extremely low non-specific adsorption of biological molecules, does not adsorb protein, and is very suitable for immunoassay.
In the preparation method of the silicon dioxide microsphere, high-temperature spheroidization is one of the commonly used process flows, which mainly comprises the steps of placing the moulding powder of the silicon dioxide in a high-temperature environment, and spheroidization is completed by the moulding components of the silicon dioxide under the action of high temperature to form the silicon dioxide microsphere, at present, in the high-temperature spheroidization process of the silicon dioxide, mutual adhesion and high-temperature plastic particles adhesion of the silicon dioxide microspheres occur frequently to equipment or pipeline walls, so that the product quality is reduced, continuous production can not be realized seriously, the production efficiency is reduced, and even a large number of failed products are produced, at present, in order to prevent the high-temperature plastic powder of the silicon dioxide from adhering to the equipment or pipeline walls, measures such as local lining, increase of cooling strength of shell walls and the like are mainly adopted, for example, a refractory material lining is added in a high-temperature area, and periodic replacement is carried, the addition of air will increase fuel consumption and lower flame temperature, and because of edge effect, the temperature around the spheroidizing high-temperature zone is usually low, so that non-sphericity and even acute angle are often generated, and because of the addition of cooling air at the edge, the phenomenon is aggravated.
Disclosure of Invention
The invention aims to provide a device and a method for reducing the wall adhesion in the high-temperature spheroidization of silica microspheres, which aim to solve the problems that the fuel consumption is increased and the flame temperature is reduced by adopting cooling air in the prior measure for reducing the wall adhesion of the silica microspheres, and the generation of non-sphericity is aggravated and even acute angles appear on the silica microspheres, which are proposed in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a device for reducing wall attachment in high-temperature spheroidization of silicon dioxide microspheres comprises spheroidizing equipment and a refrigerating machine, wherein a cold storage box is connected and installed on the refrigerating machine, a storage box is arranged in the cold storage box, a cold sending component is connected and installed between the storage box and the spheroidizing equipment, the cold sending component comprises an air inlet pipe, a connecting pipe and an exhaust pipe, the connecting pipe is connected and installed between the air inlet pipe and the exhaust pipe, the air inlet pipe is connected and installed on the storage box, the exhaust pipe is connected and installed on the spheroidizing equipment, a gas booster pump is fixedly installed at one end, close to the storage box, of the connecting pipe, a gas pressure sensor is fixedly installed at one end, close to the spheroidizing equipment, of the connecting pipe, one end of the exhaust pipe is arranged in a spiral shape, the other end of the exhaust pipe is arranged in a right, the spheroidizing equipment is characterized in that the inner wall of the spheroidizing equipment is provided with a lining fixedly arranged at the exhaust pipe, a cooling medium is arranged in the storage box, a sponge layer is fixedly arranged on the inner wall of the cold storage box, the cooling medium is gaseous flammable medium, the air inlet pipe is in sealing treatment with the cold storage box, the bottom of the spheroidizing equipment is fixedly provided with a supporting column, one side of the spheroidizing equipment is fixedly provided with a mounting seat, and the refrigerating machine is fixedly arranged on the mounting seat.
Preferably, the spiral forming angle on the exhaust pipe is forty-five degrees, a reinforcing rod is fixedly installed on one part of the exhaust pipe positioned in the right angle shape, and the other end of the reinforcing rod is fixedly installed in the side wall of the balling equipment.
Preferably, be located on the blast pipe and set up to the one end of right angle form with fixed mounting has high temperature resistant sealing washer between the balling equipment, be close to on the blast pipe balling equipment lateral wall inner wall department coating has the sealed glue of high temperature resistant.
Preferably, the inner wall of one end of the steering cylinder and one end of the exhaust pipe are both provided with threads, the steering cylinder is in threaded connection with the exhaust pipe, and a guide plate is arranged in the other end of the steering cylinder.
Preferably, an operating shaft is arranged in the steering cylinder in a penetrating manner, the operating shaft is in threaded connection with the steering cylinder, the guide plate is fixedly mounted on the operating shaft, the operating shaft is located on one side of the guide plate, fixed shafts are fixedly mounted at the top and the bottom of the guide plate in the steering cylinder, the other end of each fixed shaft is located in the guide plate, and an operating block is fixedly mounted on the operating shaft.
Preferably, the method for reducing the wall attachment in the high-temperature spheroidization of the silica microspheres comprises the following steps: the method comprises the following steps: preparing the cooling medium in a cooled state, the cooling medium in the storage tank being reduced to a suitable temperature by the storage tank being affected by the ambient temperature in the heat-storage tank; step two: conveying the cooling medium, wherein the cooling medium enters the spheroidizing equipment through the air inlet pipe, the connecting pipe and the air outlet pipe; step three: the cooling medium cools a high-temperature area in the spheroidizing equipment, and meanwhile, the lining prevents high-temperature plastic powder from adhering to the wall of the pipeline cavity.
Preferably, in the first step, the lower temperature in the cold storage tank is achieved by refrigerating the cold storage tank through the refrigerator, and the applicable material of the cooling medium may be methane gas or oxygen combustion-supporting gas.
Preferably, in the second step, the cooling medium enters the air inlet pipe from the storage tank under the action of the gas booster pump, when the cooling medium passes through the connecting pipe, the gas pressure sensor measures the pressure of the cooling medium in the connecting pipe, and the working performance of the gas booster pump is adjusted according to the indication of the gas pressure sensor, the adjustment of the pressure is related to the edge size of the balling equipment and the number of medium entry points, and is usually between 0.02 and 0.5MPa, and the optimal range is between 0.1 and 0.3 MPa.
Preferably, the cooling medium enters the high-temperature region inside the spheroidizing device under the action of the spiral part of the exhaust pipe, and the cooling medium enters the high-temperature region with a side-swirl effect, wherein the flow direction of the cooling medium can be changed when the cooling medium passes through the steering cylinder, the cutting angle of the cooling medium is generally 70-90 degrees in the transverse direction and 0-30 degrees in the longitudinal direction relative to the flame direction, and the cooling medium is protected by the sealing of the connection part at the connection part when flowing through each pipe.
Preferably, the cooling medium chemically reacts inside the spheroidizing device to perform necessary cooling on the shell wall of the spheroidizing device while maintaining an effective edge temperature, thereby avoiding the generation of an edge effect.
The invention has the technical effects and advantages that:
1. the invention sets the cooling medium as combustible or combustion-supporting gas such as methane or oxygen, and carries out necessary cooling on the shell wall of the spheroidizing equipment to prevent wall sticking, and simultaneously can keep effective edge temperature and reduce the occurrence of defective products;
2. the invention can accurately monitor and control the pressure of the cooling medium by arranging the gas booster pump and the gas pressure sensor, avoid the turbulence phenomenon in the balling equipment and aggravate the adhesion between microspheres, change the cutting direction of the cooling medium by arranging the steering cylinder and the guide plate to adapt to the direction of flame in the balling equipment, and obtain the cooling medium meeting the required temperature by arranging the refrigerating machine and the cold storage box.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is an enlarged view of a point a in fig. 1.
Fig. 3 is a front view of the steering cylinder of the present invention.
Fig. 4 is a top sectional view of the steering column of the present invention.
FIG. 5 is a schematic view of the exhaust pipe according to the present invention.
In the figure: 1. balling equipment; 2. a refrigerator; 3. a cold storage tank; 4. a storage box; 5. a cold air delivery assembly; 6. an air inlet pipe; 7. a connecting pipe; 8. an exhaust pipe; 9. a gas booster pump; 10. a gas pressure sensor; 11. a steering cylinder; 12. a liner; 13. a cooling medium; 14. a sponge layer; 15. a reinforcing bar; 16. a high temperature resistant seal ring; 17. high-temperature resistant sealant; 18. a thread; 19. a guide plate; 20. an operating shaft; 21. a fixed shaft; 22. an operation block; 23. a pillar; 24. and (7) mounting a seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a device for reducing the wall attachment in the high-temperature spheroidization of silicon dioxide microspheres as shown in figures 1-5, which comprises a spheroidizing device 1 and a refrigerator 2, wherein the refrigerator 2 is connected and provided with a cold storage tank 3, the cold storage tank 3 is internally provided with a storage tank 4, a cold conveying component 5 is connected and provided between the storage tank 4 and the spheroidizing device 1, the cold conveying component 5 comprises an air inlet pipe 6, a connecting pipe 7 and an exhaust pipe 8, the connecting pipe 7 is connected and provided between the air inlet pipe 6 and the exhaust pipe 8, the air inlet pipe 6 is connected and provided on the storage tank 4, the exhaust pipe 8 is connected and provided on the spheroidizing device 1, one end of the connecting pipe 7 close to the storage tank 4 is fixedly provided with a gas booster pump 9, one end of the connecting pipe 7 close to the spheroidizing device 1 is fixedly provided with a, a steering cylinder 11 is connected and installed at one end of the exhaust pipe 8 which is arranged in a spiral shape, a lining 12 is fixedly installed on the inner wall of the spheroidizing equipment 1 at the exhaust pipe 8, a cooling medium 13 is arranged in the storage box 4, a sponge layer 14 is fixedly installed on the inner wall of the cold storage box 3, the cooling medium 13 is a gaseous combustible medium, and the air inlet pipe 6, the cold storage box 3 and the storage box 4 are sealed;
in the invention, the refrigerator 2 refrigerates the inside of the cold storage box 3, the cold storage box 3 keeps the lower temperature inside, the sponge layer 14 enhances the heat preservation effect of the cold storage box 3, the connecting pipe 7 is used for communicating the air inlet pipe 6 and the exhaust pipe 8, so that the cooling medium 13 is successfully conveyed in the cooling assembly 5, the gas booster pump 9 is used for providing power to ensure that the cooling medium 13 in the storage box 4 enters the cooling assembly 5, and the pressure of the cooling medium 13 is convenient for users to regulate and control, because the cost of the device for monitoring the pressure of the cooling medium 13 in the spheroidizing device 1 is overhigh, the gas pressure sensor 10 is selected to be arranged outside the spheroidizing device 1, namely on the air inlet pipe 6, and the users can calculate the relation between the pressure at the gas pressure sensor 10 and the outlet of the exhaust pipe 8 according to the characteristics of the air inlet pipe 6, the exhaust pipe 8 and the, namely, the pressure at the outlet of the exhaust pipe 8 can be obtained from the pressure sensor 10, one end of the exhaust pipe 8 is set to be spiral so as to facilitate the realization of lateral rotation to cut into the spheroidizing device 1 when the cooling medium 13 enters the inner wall of the spheroidizing device 1, so as to improve the cooling effect, and the steering cylinder 11 is used for changing the cooling direction of the cooling medium 13.
The bottom fixed mounting of balling equipment 1 has pillar 23, and one side fixed mounting of balling equipment 1 has mount pad 24, and refrigerator 2 and cold storage box 3 are all fixed mounting on mount pad 24.
Referring to fig. 1, 2 and 5, the spiral forming angle of the exhaust pipe 8 is forty-five degrees, a right-angle portion of the exhaust pipe 8 is fixedly provided with a reinforcing rod 15, and the other end of the reinforcing rod 15 is fixedly arranged inside the side wall of the spheroidizing apparatus 1.
In the present invention, the reinforcing rod 15 is used to stabilize the exhaust pipe 8, improve the fixing effect of the exhaust pipe 8 in the spheroidizing apparatus 1, and prevent the shape and position of the exhaust pipe 8 in the spheroidizing apparatus 1 from being changed when the cooling medium 13 impacts the exhaust pipe 8.
As shown in fig. 2, a high temperature resistant sealing ring 16 is fixedly installed between the end of the exhaust pipe 8 disposed in a right angle shape and the spheroidizing device 1, and a high temperature resistant sealant 17 is coated on the exhaust pipe 8 near the inner wall of the side wall of the spheroidizing device 1.
In the invention, the high-temperature-resistant sealing ring 16 is used for sealing the exhaust pipe 8 and the spheroidizing equipment 1 so as to prevent heat flow in the spheroidizing equipment 1 from flowing out of the spheroidizing equipment and ensure the air tightness in the spheroidizing equipment 1, and the high-temperature-resistant sealing glue 17 can ensure the fixing effect of the exhaust pipe 8 and further improve the sealing property between the exhaust pipe 8 and the spheroidizing equipment 1.
Referring to fig. 3 and 5, the inner wall of one end of the steering cylinder 11 and one end of the exhaust pipe 8 are both provided with threads 18, the steering cylinder 11 is screwed to the exhaust pipe 8, and a guide plate 19 is provided in the other end of the steering cylinder 11.
In the present invention, the screw connection between the steering cylinder 11 and the exhaust pipe 8 facilitates the disassembly and assembly between the steering cylinder 11 and the exhaust pipe 8, wherein the initial turning position of the steering cylinder 11 on the exhaust pipe 8 is determined because the number and the screw thread of the screw threads 18 are fixed, so that the direction of the guide plate 19 in the steering cylinder 11 is the same as the direction of the guide plate 19 connected before the exhaust pipe 8 every time the steering cylinder 11 is screwed on the exhaust pipe 8.
Referring to fig. 3 and 4, an operating shaft 20 is disposed through the steering cylinder 11, the operating shaft 20 is screwed to the steering cylinder 11, the guide plate 19 is fixedly mounted on the operating shaft 20, the operating shaft 20 is located on one side of the guide plate 19, a fixed shaft 21 is fixedly mounted at the top and the bottom of the guide plate 19 in the steering cylinder 11, the other end of the fixed shaft 21 is located in the guide plate 19, and an operating block 22 is fixedly mounted on the operating shaft 20.
In the present invention, the operation shaft 20 is screwed on the steering tube 11 to rotate the operation shaft 20 to move the position of the operation shaft 20 in the steering tube 11, the operation shaft 20 is rotated by the operator to rotate the operation block 22, the operation block 22 can drive the operation shaft 20 to rotate because the operation block 22 is fixedly arranged on the operation shaft 20, the guide plate 19 is fixedly arranged on the operation shaft 20 by the nut, wherein when the operation shaft 20 rotates, the nut is loosened appropriately to facilitate the guide plate 19 to move along with the movement of the nut, the operation shaft 20 is arranged at the middle symmetrical line of the guide plate 19, meanwhile, the operation shaft 20 is arranged on the guide plate 19 near the side of the guide plate 19 where the screw thread 18 is arranged in the steering tube 11, the fixed shaft 21 is arranged at the top and the bottom of the guide plate 19 to ensure that the guide plate 19 can rotate around the straight line position where the fixed shaft 21 is arranged, when an operator rotates the operation block 22, the operation shaft 20 rotates in the steering cylinder 11, the rotation effect is converted into that the operation shaft 20 moves in the steering cylinder 11, when the operation shaft 20 moves and rotates, the nut on the operation shaft 20, which is used for fixing the guide plate 19, is driven to move, the nut limits the guide plate 19 to move along with the guide plate 19, and due to the position of the operation shaft 20 on the guide plate 19, the guide plate 19 rotates along with the action of the fixed shaft 21 on the steering shaft of the guide plate 19, and the rotation effects of the three guide plates 19 are the same, so that the guide plates 19 can change angles to control the flowing direction of the cooling medium 13.
The method for reducing the wall attachment in the high-temperature spheroidization of the silica microspheres comprises the following steps: the method comprises the following steps: preparing the cooling medium 13 in a cooled state, the cooling medium 13 in the storage tank 4 being lowered to a suitable temperature by the storage tank 4 being affected by the ambient temperature in the cold storage tank 3; step two: conveying a cooling medium 13, wherein the cooling medium 13 enters the spheroidizing equipment 1 through an air inlet pipe 6, a connecting pipe 7 and an air outlet pipe 8; step three: the cooling medium 13 cools the high-temperature area in the spheroidizing device 1, and the lining 12 prevents the high-temperature plastic powder from adhering to the wall of the pipeline cavity.
In the present invention, the inner liner 12 may be used together with the cooling medium 13 and the cooling member 5, or the inner liner 12 may be removed and the cooling medium 13 may be introduced separately for wall attachment reduction, wherein the cooling member 5 for introducing the cooling medium 13 is generally used in a high temperature region where wall adhesion often occurs, and is not recommended to be used elsewhere in the spheroidizing apparatus 1.
In the first step, the lower temperature in the cold storage tank 3 is realized by refrigerating the cold storage tank through the refrigerator 2, and the applicable material of the cooling medium 13 can be methane gas or oxygen combustion-supporting gas.
Compared with the method that air containing a large amount of nitrogen is used as a cooling medium, when methane gas or oxygen combustion-supporting gas enters a high-temperature region, the temperature of the high-temperature region is reduced, meanwhile, the methane gas or oxygen combustion-supporting gas also participates in combustion reaction, so that the peripheral temperature is not reduced to be low, and non-spherical or even acute angles are not generated, the gaseous combustible medium carries out necessary cooling on the shell wall of the spheroidizing equipment 1, the wall sticking is prevented, meanwhile, the effective edge temperature can be kept, and the generation of defective products is reduced.
And in the second step, the cooling medium 13 enters the air inlet pipe 6 from the storage tank 4 under the action of the gas booster pump 9, when the cooling medium 13 passes through the connecting pipe 7, the gas pressure sensor 10 measures the pressure of the cooling medium 13 in the connecting pipe 7, and the working performance of the gas booster pump 9 is adjusted according to the indication number of the gas pressure sensor 10, the adjustment of the pressure is related to the edge size of the spheroidizing equipment 1 and the number of medium entry points, generally ranges from 0.02 MPa to 0.5MPa, and the optimal range ranges from 0.1 MPa to 0.3 MPa.
In the present invention, it is very important to control the pressure of the introduced cooling medium 13, and if the pressure of the introduced cooling medium 13 is not properly controlled, turbulence may be caused to increase the adhesion between the spheres, and the specific pressure control is generally closely related to the size of the edge of the sphering apparatus 1 and the number of points of medium penetration.
The cooling medium 13 enters a high-temperature area inside the spheroidizing device 1 under the action of a spiral part of the pipeline of the exhaust pipe 8 by a side-swirl effect, wherein the cooling medium 13 is acted by the guide plate 19 when passing through the steering cylinder 11, the flow direction of the cooling medium 13 can be changed, the cutting angle of the cooling medium 13 is generally 70-90 degrees in the transverse direction and 0-30 degrees in the longitudinal direction with the flame direction, and the cooling medium 13 is protected by sealing at the joint when flowing through each pipeline.
In the present invention, the effect of the cooling medium 13 on reducing the microsphere wall adhesion can be improved by improving the cutting direction of the cooling medium 13.
The cooling medium 13 chemically reacts inside the sphering apparatus 1 to provide the necessary cooling of the shell walls of the sphering apparatus 1 while maintaining an effective edge temperature to avoid the edge effect.
The working principle of the invention is as follows: when the invention is used, an operator firstly opens the refrigerant 2 to obtain the cooling medium 13 in a cooling state, then opens the gas booster pump 9, so that the cooling medium 13 in the storage tank 4 enters a high-temperature region in the spheroidizing equipment 1 from the side wall of the spheroidizing equipment through the air inlet pipe 6, the connecting pipe 7 and the exhaust pipe 8, and the cooling medium 13 carries out necessary cooling on the shell wall of the spheroidizing equipment 1, thereby preventing microspheres from sticking to the wall, simultaneously maintaining effective edge temperature and reducing the occurrence of defective products.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a reduce device that attaches wall in high temperature balling of silica microballon, includes balling equipment (1) and refrigerator (2), its characterized in that: the cooling device is characterized in that a cold storage box (3) is connected and installed on the refrigerating machine (2), a storage box (4) is arranged in the cold storage box (3), the storage box (4) and the spheroidizing equipment (1) are connected and installed with a cold conveying assembly (5), the cold conveying assembly (5) comprises an air inlet pipe (6), a connecting pipe (7) and an exhaust pipe (8), the connecting pipe (7) is connected and installed between the air inlet pipe (6) and the exhaust pipe (8), the air inlet pipe (6) is connected and installed on the storage box (4), the exhaust pipe (8) is connected and installed on the spheroidizing equipment (1), a gas booster pump (9) is fixedly installed at one end, close to the storage box (4), of the connecting pipe (7), and a gas pressure sensor (10) is fixedly installed at one end, close to the spheroidizing equipment (1), of the connecting pipe, one end of the exhaust pipe (8) is arranged to be spiral, the other end of the exhaust pipe (8) is arranged to be right-angled, a steering cylinder (11) is connected and mounted at one end arranged to be spiral on the exhaust pipe (8), a lining (12) is fixedly mounted at the exhaust pipe (8) on the inner wall of the spheroidizing equipment (1), a cooling medium (13) is arranged in the storage box (4), a sponge layer (14) is fixedly mounted on the inner wall of the cold storage box (3), the cooling medium (13) is gaseous combustible medium, and the air inlet pipe (6), the cold storage box (3) and the storage box (4) are sealed;
the bottom fixed mounting of balling equipment (1) has pillar (23), one side fixed mounting of balling equipment (1) has mount pad (24), refrigerator (2) with the equal fixed mounting of cold storage box (3) is in on mount pad (24).
2. The apparatus for reducing the adherence of silica microspheres during high temperature spheroidization according to claim 1, wherein: spiral-shaped forming angle is forty-five degrees on blast pipe (8), lie in on blast pipe (8) some fixed mounting of right angle form has stiffener (15), the other end fixed mounting of stiffener (15) is in the inside of balling equipment (1) lateral wall.
3. The apparatus for reducing the adherence of silica microspheres during high temperature spheroidization according to claim 2, wherein: the exhaust pipe (8) is arranged at the right angle, one end of the right angle is fixedly mounted with a high-temperature-resistant sealing ring (16) between the spheroidizing equipment (1), and the exhaust pipe (8) is close to the inner wall of the side wall of the spheroidizing equipment (1) is coated with a high-temperature-resistant sealing glue (17).
4. The apparatus for reducing the adherence of silica microspheres during high temperature spheroidization according to claim 1, wherein: the inner wall of one end of the steering cylinder (11) and one end of the exhaust pipe (8) are both provided with threads (18), the steering cylinder (11) is in threaded connection with the exhaust pipe (8), and a guide plate (19) is arranged in the other end of the steering cylinder (11).
5. The apparatus for reducing the adherence of silica microspheres in high temperature spheroidization according to claim 4, wherein: an operation shaft (20) penetrates through the steering cylinder (11), the operation shaft (20) is in threaded connection with the steering cylinder (11), the guide plate (19) is fixedly installed on the operation shaft (20), the operation shaft (20) is located on one side of the guide plate (19), a fixing shaft (21) is fixedly installed at the top and the bottom of the guide plate (19) in the steering cylinder (11), the other end of the fixing shaft (21) is located in the guide plate (19), and an operation block (22) is fixedly installed on the operation shaft (20).
6. The apparatus for reducing the adherence of silica microspheres during high temperature spheroidization according to claim 1, wherein: the method for reducing the wall attachment in the high-temperature spheroidization of the silica microspheres comprises the following steps: the method comprises the following steps: preparing the cooling medium (13) in a cooled state, the cooling medium (13) in the storage tank (4) being reduced to a suitable temperature by the storage tank (4) being affected by the ambient temperature in the cold storage tank (3); step two: conveying the cooling medium (13), wherein the cooling medium (13) enters the spheroidizing equipment (1) through the air inlet pipe (6), the connecting pipe (7) and the air outlet pipe (8); step three: the cooling medium (13) cools a high-temperature area in the spheroidizing equipment (1), and meanwhile, the lining (12) prevents high-temperature plastic powder from adhering to the wall of the pipeline cavity.
7. The apparatus and method for reducing the adherence of the silica microspheres in the high temperature spheroidization according to the claim 6, wherein: in the step one, the lower temperature in the cold storage box (3) is realized by refrigerating the cold storage box through the refrigerating machine (2), and the applicable material of the cooling medium (13) can be methane gas or oxygen combustion-supporting gas.
8. The apparatus and method for reducing the adherence of the silica microspheres in the high temperature spheroidization according to the claim 6, wherein: in the second step, the cooling medium (13) enters the air inlet pipe (6) from the storage tank (4) under the action of the gas booster pump (9), when the cooling medium (13) passes through the connecting pipe (7), the pressure of the cooling medium (13) in the connecting pipe (7) is measured by the gas pressure sensor (10), the working performance of the gas booster pump (9) is adjusted according to the indication number of the gas pressure sensor (10), the adjustment of the pressure is related to the edge size and the number of medium cut-in points of the balling equipment (1), and is usually 0.02-0.5 MPa, and the optimal range is 0.1-0.3 MPa.
9. The apparatus and method for reducing the adherence of the silica microspheres in the high temperature spheroidization according to the claim 8, wherein: the cooling medium (13) enters a high-temperature area inside the spheroidizing equipment (1) with a side-swirl effect under the action of a spiral partial pipeline of the exhaust pipe (8), wherein the flow direction of the cooling medium (13) can be changed when the cooling medium (13) passes through the steering cylinder (11), the cutting angle of the cooling medium (13) is generally 70-90 degrees in the transverse direction and 0-30 degrees in the longitudinal direction with the flame direction, and the cooling medium (13) is hermetically protected at the joint passing through each pipeline.
10. The apparatus and method for reducing the adherence of the silica microspheres in the high temperature spheroidization according to the claim 6, wherein: the cooling medium (13) is subjected to chemical reaction in the balling equipment (1), and the shell wall of the balling equipment (1) is cooled necessarily while effective edge temperature is kept, so that the edge effect is avoided.
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| CN202010824842.4A CN112169695A (en) | 2020-08-17 | 2020-08-17 | Device and method for reducing wall attachment in high-temperature spheroidization of silicon dioxide microspheres |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116161858A (en) * | 2022-08-25 | 2023-05-26 | 浙江颐核医疗科技有限公司 | Device and method for balling glass microspheres |
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