CN107954430B - The preparation method of the nano silica of improvement - Google Patents
The preparation method of the nano silica of improvement Download PDFInfo
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- CN107954430B CN107954430B CN201711293249.6A CN201711293249A CN107954430B CN 107954430 B CN107954430 B CN 107954430B CN 201711293249 A CN201711293249 A CN 201711293249A CN 107954430 B CN107954430 B CN 107954430B
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- 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
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- 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
- C01B33/186—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof from or via fluosilicic acid or salts thereof by a wet process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/0012—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain)
- B02C19/0043—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain) the materials to be pulverised being projected against a breaking surface or breaking body by a pressurised fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
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Abstract
The present invention provides a kind of preparation methods of the nano silica of improvement.The technical problems such as it is complicated in the past that it solves the step of existing preparation method, and is unable to continuous production, and speed of production is slow.The preparation method of the nano silica of this improvement, comprising the following steps: a, preparation: the Na2SiO3 aqueous solution and concentration that the NaCl aqueous solution for being 7.5% by high-purity water compound concentration, concentration are 45% are 13.5% dilute hydrochloric acid solution；B, it reacts: the NaCl aqueous solution prepared in step a, Na2SiO3 aqueous solution and dilute hydrochloric acid solution is poured into reaction kettle and is reacted；C, it is aged: the solution after reacting in reaction kettle being introduced into storage tank and is aged, colloidal sol is formed；D, pressure filtration washing: the colloidal sol after ageing is transported in filter press and carries out filters pressing；E, drying: wet cake obtained in step d is dried by baking oven；F, it crushes: the powder granule after drying is crushed by airflow comminution system, nano silica is made.The present invention has the advantages that prepare fireballing.
Description
Technical field
The present invention relates to a kind of preparation method, especially a kind of preparation method of the nano silica of improvement.
Background technique
Nanometer grade silica is a kind of inorganic chemical industry material, is commonly called as white carbon black.Due to being ultrafine nanometer, size range
In 1~100nm, therefore there are many unique properties, such as have to anti-ultraviolet optical property, it is anti-that other materials can be improved
Aging, intensity and chemical-resistance, purposes are very extensive.
Through retrieving, as Chinese patent literature disclose a kind of nano silica microsphere preparation method [application number:
201410015493.6；Publication number: CN 104326478A].The preparation method of this nano silica microsphere, feature exist
In including the following steps: will to be uniformly mixed in organic solvent and alkaline solution and form the first mixed solution；In first mixing
Macromolecule dispersing agent is added in solution, and constant temperature is kept the temperature, and obtains the second mixed solution；Instilling in second mixed solution has
Machine esters of silicon acis, until obtaining opalescent mixture；And it is centrifugated the opalescent mixture and is dried in vacuo and obtain described two
Silicon oxide microsphere.
Although the large scale preparation of nano silica microsphere may be implemented in preparation method disclosed in the patent, still,
The step of preparation method, is complicated in the past, and is unable to continuous production, and speed of production is slow, therefore, designs a kind of nanometer of improvement
The preparation method of silica is necessary.
Summary of the invention
The purpose of the present invention is there is the above problem in view of the prior art, a kind of nano silica of improvement is proposed
Preparation method, which has the characteristics that prepare fireballing.
Object of the invention can be realized by the following technical scheme: the preparation method of the nano silica of improvement,
It is characterized in that, comprising the following steps:
A, it prepares: the Na that the NaCl aqueous solution for being 7.5% by high-purity water compound concentration, concentration are 45%2SiO3It is water-soluble
Liquid and concentration are 13.5% dilute hydrochloric acid solution；
B, it reacts: by the NaCl aqueous solution prepared in step a, Na2SiO3Aqueous solution and dilute hydrochloric acid solution are poured into reaction kettle
In reacted, reaction time 10-40min；
C, it is aged: the solution after reacting in reaction kettle being introduced into storage tank and is aged, colloidal sol is formed；
D, pressure filtration washing: the colloidal sol after ageing is transported in filter press and carries out filters pressing, and cleans 3-5 with deionized water
It is secondary；
E, drying: wet cake obtained in step d is dried by baking oven；
F, it crushes: the powder granule after drying being crushed by airflow comminution system, is crushed to 30-60nm, be made
Nano silica.
Using above method, by preparation, reaction, ageing, pressure filtration washing, drying and crushing and etc., it can be achieved that it connects
Continue continual production operation, preparation speed is fast.
Airflow comminution system in the step f includes rack, be provided in the rack feed device, decomposer and
Collection device, the feed device include storage tank and feed pipe, and storage tank is fixed on the rack, and storage tank upper end has input
Mouthful, storage tank lower end is connected by guide pipe with the tube wall of feed pipe, and installing pipe is provided between storage tank and guide pipe, is pacified
Tubulature upper end is connected with storage tank lower end, and installing pipe lower end is connected with guide pipe, and having in installing pipe can will be in storage tank
Material is transported to the conveying mechanism of guide pipe, and the dredging mechanism that can dredge storage tank lower end is provided in rack；The decomposition
Device includes decomposing tank, positioning ring, several air supply pipes, feeder sleeve and air compressor machine, decomposes tank and is arranged on the rack, positioning ring setting
It is decomposing in tank, and positioning ring is located in the middle part of decomposition tank, the outlet side of several air supply pipes is fixed on positioning across pot sidewall is decomposed
On ring, and outlet side, towards positioning ring center, the inlet end of air supply pipe is connected by the first communicating pipe with air compressor machine, feeder sleeve
Discharge end be fixed on and decompose in tank, and discharge end, towards positioning ring, the feed end of feeder sleeve, which passes through, decomposes pot sidewall and feeding
Pipe is connected, and decomposes tank top and is provided with sorting mechanism, decomposes tank lower part and is provided with recovering mechanism；The collection device includes receiving
Collection tank, efferent duct and output screw, collecting tank are fixed on the rack, and collecting tank upper end has an import, the import of collecting tank and point
Solution tank top is connected, and collecting tank lower end has outlet, and the outlet of collecting tank is connected with the tube wall of efferent duct, efferent duct one end
For closed end, the efferent duct other end is output end, is provided with locating piece used for positioning on output end, output screw one end is located at
In efferent duct, the driving mechanism that the closed end that the output screw other end is pierced by efferent duct can drive it to rotate with one is connected, rack
On be further fixed on baffle box, baffle box side has opening, and the chamber door that can live closure of openings, efferent duct are hinged in baffle box
Output end pass through baffle box side wall be located in baffle box, being additionally provided in rack can be by the vacuum cleaner of dust absorption in baffle box
Structure.
The working principle of airflow comminution system is as follows: by conveying mechanism by the feedstock transportation in storage tank to guide pipe
In, raw material enters in feed pipe under the effect of gravity, to realize its feeding operation；Raw material in feed pipe is led to
Cross feeder sleeve be transported to decompose tank in, air compressor machine by compressed air by air supply pipe be transported to decomposition tank in, raw material by
The high speed impact of air generates and rubs and resolve into nanoscale powder material, between each other by sorting mechanism by satisfactory
Grain filters out, and is recycled undesirable particle by recovering mechanism, to complete its apportioned effort；Nanoscale powder material is defeated
It is sent in collecting tank, material bag is fixed on the output end of efferent duct by locating piece, output spiral shell is driven by driving mechanism
Bar rotation, with the rotation of output screw, the nanoscale powder material in collecting tank is transported in material bag, will by dust collection mechanism
Dust absorption in baffle box, to realize that it collects operation.
The conveying mechanism includes conveying axis and decelerating motor, and conveying axis is horizontally set in installing pipe, and conveys axle position
Below the gas outlet of appendix, conveying axis end is connected with the output shaft of decelerating motor, and several conveyings are fixed on conveying axis
Blade.
When needing the feedstock transportation by storage tank into guide pipe, the output shaft for controlling decelerating motor drives conveying axis to turn
Dynamic, conveying axis drives conveying blade rotation, can be by the feedstock transportation of storage tank into guide pipe with the rotation of conveying blade.
The dredging mechanism includes appendix, and the tube wall that the gas outlet of appendix passes through installing pipe is located in installing pipe, and
Vertically upward, the air inlet of appendix is connected with above-mentioned air compressor machine at the end, and solenoid valve is provided in appendix, is also set in rack
It is equipped with the control structure that can control electromagnetic valve work.
When the blocking of the lower end of storage tank, solenoid valve is controlled by control structure and obtains electric, solenoid valve is connected to appendix, empty
Mechanism of qi delivers air in the air inlet of appendix, and the gas outlet of appendix moves up the raw material of storage tank lower end, will
It is dredged, to can ensure that being normally carried out for feeding operation, good operating stability.
The control structure includes elastic piece, travel switch and the first controller, and elastic piece one end is fixed on guide pipe
On tube wall, the elastic piece other end is free end, and travel switch is fixed on the tube wall of guide pipe, and travel switch is located at elastic piece
The free end of top, elastic piece can be with travel switch contact, and travel switch and solenoid valve are connected with first controller.
Under normal circumstances, under the gravity of raw material, elastic piece deforms downwards elastic piece, the free end of elastic piece and row
Signal is passed to the first controller by Cheng Kaiguan separation, travel switch, and the first controller makes solenoid valve power loss；When under storage tank
When the blocking of end, signal is passed to the first controller, the first control by the free end of elastic piece and travel switch contact, travel switch
It is electric that device obtains solenoid valve, easy to control, quick.
The sorting mechanism includes screen plate, vibration motor, discharge nozzle and the first asepwirator pump, and tank is being decomposed in screen plate setting
It is interior, and screen plate is located at decomposition tank top, offers several material paths on screen plate, vibration motor is fixed on sieve by mounting rack
It selects on plate, discharge nozzle one end is connected with tank top is decomposed, and the discharge nozzle other end is connected with collecting tank, the setting of the first asepwirator pump
In discharge nozzle.
When needing satisfactory particle screen selecting, the first asepwirator pump is opened, satisfactory particle may pass through sieve
The material path for selecting plate, is transported in collecting tank by discharge nozzle, and screening is quick；Screen plate is set to generate shake by vibration motor
Dynamic, avoidable material path blocks, good operating stability.
The recovering mechanism includes recovery tube and the second asepwirator pump, and recovery tube one end is connected with tank lower part is decomposed, and is recycled
The pipe other end is connected with storage tank, and the second asepwirator pump is arranged in recovery tube.
When needing to recycle undesirable particle, the second asepwirator pump is opened, storing is transported to by recovery tube
In tank, it is decomposed again.
Be additionally provided in the rack be adjustable first communicating pipe flow regulating and controlling mechanism, regulating and controlling mechanism includes pressure sensing
Device, first flow regulating valve and second controller, pressure sensor and first flow regulating valve were successively set on for the first communicating pipe
In, and pressure sensor is located at first flow regulating valve and decomposes between tank, pressure sensor and first flow regulating valve with
The second controller is connected.
Using the above structure, signal is passed to by second controller, second controller control first by pressure sensor
The opening degree of flow control valve, thus can realize first communicating pipe flow dynamic regulation, regulation is accurate.
The locating piece includes rubber ring, and rubber ring is arranged and is fixed on the output end of efferent duct, rubber ring lateral surface
It is upper that there are several protrusions.
Using the above structure, material bag is covered on the output end of efferent duct, is determined material bag by the elastic force of rubber ring
Position is lived, and positioning is reliable；The frictional force between rubber ring and material bag, good operating stability can be increased by protrusion.
The dust collection mechanism includes the first blower, third asepwirator pump and air intake duct, and the first blower is fixed in baffle box, and
First blower is located above efferent duct, and the outlet air mouth down of the first blower, air intake duct one end is connected with baffle box bottom, air-breathing
The pipe other end is connected with third asepwirator pump, and filter bag is provided in air intake duct.
When needing dust absorption in baffle box, the air in baffle box is conveyed downwards by the first blower, powder
Dirt is moved down with air, by third asepwirator pump by the dust absorption of baffle box, in suction filter bag, is absorbed convenient, fast
Speed.
The driving mechanism includes motor, driving gear and driven gear, and motor is fixed on the rack, and driving gear is fixed
On the output shaft of motor, driven gear is fixed on output screw, and driving gear is meshed with driven gear.
When needing rotates output screw, the output shaft for controlling motor drives driving gear rotation, and driving gear drives
Driven gear rotation, driven gear drives output screw rotation, so as to rotate output screw.
Be provided in the rack for carrying out cooling cooling body to air compressor machine, cooling body include mounting bracket and
Second blower, mounting bracket are arranged on the rack, and have damping block between mounting bracket and rack, and the second blower passes through an energy band
The mobile mechanism that it moves horizontally is moved to be arranged in mounting bracket, the second blower is located above air compressor machine, and the second blower out
Air port is towards air compressor machine.
When needing to cool down to air compressor machine, drive the second horizontal fan mobile by mobile mechanism, the second blower of movement
Air compressor machine can integrally be cooled down, reliable operation.
The mobile mechanism includes the first arc-shaped guide rail, the first sliding block, mounting plate, servo motor and gear, and first
Guide rail is fixed on the mounting bracket, and has teeth on the intrados of the first guide rail, and the first sliding block is arranged in the first guide rail, peace
Loading board is fixed on the first sliding block, and servo motor is fixed on mounting plate upper surface, the output shaft of servo motor straight down, gear
It is fixed on the output shaft of servo motor, gear is meshed with the teeth of the first guide rail, and the second blower can drive thereon by one
The elevating mechanism of lower lifting is arranged in mounting plate lower surface.
When needing to make the second horizontal fan mobile, the output shaft driven gear rotation of servo motor is controlled, gear and the
The teeth of one guide rail, which are meshed, moves horizontally the first sliding block along the first guide rail, and the first sliding block drives mounting plate to move horizontally,
Mounting plate drives the second horizontal fan mobile, so as to keep the second horizontal fan mobile.
The elevating mechanism includes push-rod electric machine, the second sliding block and the second guide rail, and the second guide rail is fixed on by connection frame
Mounting plate lower surface, the second sliding block are arranged in the second guide rail, and push-rod electric machine is fixed on mounting plate lower surface, and push-rod electric machine pushes away
Straight down, the push rod end of push-rod electric machine is connected bar with the second sliding block, and the second blower is fixed on the second sliding block.
When needing moves up and down the second blower, the push rod for controlling push-rod electric machine drives the second sliding block along the second guide rail
It moves up and down, the second sliding block drives the second blower to move up and down, and can cool down to the air compressor machine of different model, adaptable.
The control mechanism that can control servo motor start and stop is additionally provided in the rack, control mechanism includes that several temperature pass
Sensor, display screen and third controller, if dry temperature sensor is separately positioned on air compressor machine, and the uniform cloth of temperature sensor
It sets, display screen is fixed on the rack, and temperature sensor, display screen and servo motor are connected with the third controller.
Using the above structure, the temperature at air compressor machine is detected by temperature sensor, signal is passed into third control
Device, third controller show its temperature value by display screen, meanwhile, third controller controls servo motor work, servo motor
Keep the second horizontal fan mobile, it is easy to control.
Compared with prior art, the preparation method of the nano silica of this improvement has the advantage that
1, in this preparation method by preparations, reaction, ageing, pressure filtration washing, drying and crushing and etc., it can be achieved that its company
Continue continual production operation, preparation speed is fast.
2, it is delivered air in appendix by air compressor machine, appendix moves up the raw material of storage tank lower end, can
Ensure being normally carried out for feeding operation, good operating stability.
3, make raw material by high speed impact by air, generate between each other and rub and resolve into nanoscale powder material, will accord with
It closes desired particle screen selecting to go out, undesirable particle is recycled, cross multioperation without artificial, decomposition efficiency is high.
4, the dust in baffle box is moved down by the first blower, is inhaled the dust of baffle box by third asepwirator pump
It removes, it is convenient to absorb.
5, the second sliding block is driven to move up and down by push-rod electric machine, the second sliding block drives the second blower to move up and down, can be right
The air compressor machine of different model is cooled down, adaptable.
Detailed description of the invention
Fig. 1 is the planar structure schematic diagram of this feed device.
Fig. 2 is the cross-sectional view that this feed device removes part.
Fig. 3 is the cross-sectional view of this decomposer.
Fig. 4 is the cross-sectional view that this decomposer removes part.
Fig. 5 is the planar structure schematic diagram of this collection device.
Fig. 6 is the partial enlargement diagram in Fig. 5 at A.
Fig. 7 is the schematic perspective view of baffle box in this collection device.
Fig. 8 is the schematic perspective view of this cooling body.
Fig. 9 is the schematic perspective view that this cooling body removes part.
In figure, 1, rack；2, decelerating motor；3, guide pipe；4, feed pipe；4a, interconnecting piece；5, the first controller；6, pacify
Tubulature；7, storage tank；8, appendix；9, solenoid valve；11, conveying axis；12, conveying blade；13, guide housing；14, travel switch；
15, elastic piece；20, air compressor machine；21, first flow regulating valve；22, the first communicating pipe；23, pressure sensor；24, the second control
Device；25, rubber slab；26, recovery tube；27, the second asepwirator pump；28, air supply pipe；29, positioning ring；30, tank is decomposed；30a, maintenance
Mouthful；31, screen plate；32, vibration motor；33, mounting rack；34, the first asepwirator pump；35, discharge nozzle；36, feeder sleeve；37, cover board；
40, output screw；41, the second communicating pipe；42, efferent duct；42a, closed end；42b, output end；43, second flow regulating valve；
44, third asepwirator pump；45, air intake duct；46, baffle box；47, collecting tank；48, driving gear；49, motor；50, driven gear；
51, filter bag；52, chamber door；53, the first blower；54, rubber ring；55, access panel；60, third controller；61, display screen；63,
Damping block；64, mounting bracket；65, the first guide rail；65a, teeth；66, gear；67, servo motor；68, mounting plate；69, second
Blower；70, temperature sensor；71, push-rod electric machine；72, the second sliding block；73, the second guide rail；74, connection frame；75, the first sliding block.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
The preparation method of the nano silica of this improvement, comprising the following steps:
A, it prepares: the Na that the NaCl aqueous solution for being 7.5% by high-purity water compound concentration, concentration are 45%2SiO3It is water-soluble
Liquid and concentration are 13.5% dilute hydrochloric acid solution；In the present embodiment, high-purity water is using the existing product that can be bought in the market；
B, it reacts: by the NaCl aqueous solution prepared in step a, Na2SiO3Aqueous solution and dilute hydrochloric acid solution are poured into reaction kettle
In reacted, reaction time 10-40min, in the present embodiment, reaction time 25min；
C, it is aged: the solution after reacting in reaction kettle being introduced into storage tank and is aged, colloidal sol is formed；
D, pressure filtration washing: the colloidal sol after ageing is transported in filter press and carries out filters pressing, and cleans 3-5 with deionized water
It is secondary, in the present embodiment, cleaned 4 times with deionized water；
E, drying: wet cake obtained in step d is dried by baking oven；
F, it crushes: the powder granule after drying being crushed by airflow comminution system, is crushed to 30-60nm, be made
Nano silica.
Using this method, by preparation, reaction, ageing, pressure filtration washing, drying and crushing and etc., it can be achieved that it is continuous
Continual production operation, preparation speed are fast.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 7, the airflow comminution system in step f includes rack 1, in rack 1
It is provided with feed device, decomposer and collection device, feed device includes storage tank 7 and feed pipe 4, and storage tank 7 is fixed on
In rack 1, storage tank 7 is fixed on by bolted connection in rack 1, and 7 upper end of storage tank has input port, storage tank 7
Lower end is connected by guide pipe 3 with the tube wall of feed pipe 4；Installing pipe 6, installing pipe are provided between storage tank 7 and guide pipe 3
6 upper ends are connected with 7 lower end of storage tank, and 6 lower end of installing pipe is connected with guide pipe 3, and having in installing pipe 6 can be by storage tank 7
Middle material is transported to the conveying mechanism of guide pipe 3, and the dredging mechanism that can dredge 7 lower end of storage tank is provided in rack 1；Feeding
4 both ends of pipe have can facilitate feed pipe 4 and feeder sleeve 36 to link together in horn-like interconnecting piece 4a using the structure；Point
Solving device includes decomposing tank 30, positioning ring 29, several air supply pipes 28, feeder sleeve 36 and air compressor machine 20, decomposes tank 30 and is arranged in machine
It on frame 1, decomposes and is additionally provided with buffer structure between tank 30 and rack 1, using the structure, can avoid decomposing tank by buffer structure
30 and rack 1 directly contact and generate collision, it is small using noise；Buffer structure can make its tool using the structure for rubber slab 25
There is the performance of preferable buffering and damping；The setting of positioning ring 29 is being decomposed in tank 30, and positioning ring 29 is located at 30 middle part of decomposition tank,
The outlet side of several air supply pipes 28 passes through decomposition 30 side wall of tank and is fixed on positioning ring 29, in the present embodiment, air supply pipe 28
Quantity is 12, and the outlet side of air supply pipe 28 is fixed on by bolted connection on positioning ring 29；And outlet side direction
29 center of positioning ring, the inlet end of air supply pipe 28 with air compressor machine 20 by being connected the first communicating pipe 22, the discharging of feeder sleeve 36
End, which is fixed on, decomposes in tank 30, and the discharge end of feeder sleeve 36, which is fixed by the connecting rod, to be decomposed in tank 30；And discharge end direction is fixed
Position ring 29, the feed end of feeder sleeve 36 pass through decomposition 30 side wall of tank and are connected with feed pipe 4, decompose 30 top of tank and be provided with screening
Mechanism decomposes 30 lower part of tank and is provided with recovering mechanism；It decomposes and is also provided with access hole 30a on tank 30, decompose and be hinged on tank 30
It can be by cover board 37 that access hole 30a is closed；Collection device includes collecting tank 47, efferent duct 42 and output screw 40, collecting tank
47 are fixed in rack 1, and collecting tank 47 is fixed on by bolted connection in rack 1, and 47 upper end of collecting tank has import,
The import of collecting tank 47 is connected with 30 top of tank is decomposed, and 47 lower end of collecting tank has outlet, the outlet and output of collecting tank 47
The tube wall of pipe 42 is connected, and the outlet of collecting tank 47 is connected by the second communicating pipe 41 with the tube wall of efferent duct 42；Efferent duct
42 one end are closed end 42a, and 42 other end of efferent duct is output end 42b, are provided with positioning used for positioning on output end 42b
Material bag is fixed on output end 42b by part by locating piece；40 one end of output screw is located in efferent duct 42, output screw
The driving mechanism that the closed end 42a that 40 other ends are pierced by efferent duct 42 can drive it to rotate with one is connected, and is further fixed in rack 1
Baffle box 46 is further fixed on baffle box 46 in rack 1 by bolted connection；46 side of baffle box has opening, barrier
The chamber door 52 that closure of openings can be lived is hinged on case 46, the output end 42b of efferent duct 42 passes through 46 side wall of baffle box and is located at resistance
In cell 46, being additionally provided in rack 1 can be by the dust collection mechanism of dust absorption in baffle box 46.
As shown in Figure 1 and Figure 2, conveying mechanism includes conveying axis 11 and decelerating motor 2, and conveying axis 11 is horizontally set on installation
In pipe 6, and conveying axis 11 is located at below the gas outlet of appendix 8, and 11 end of conveying axis is connected with the output shaft of decelerating motor 2,
Decelerating motor 2 is fixed in installing pipe 6, and the mode that 11 end of conveying axis is connected by key is connected with the output shaft of decelerating motor 2；
It is fixed with several conveying blades 12 on conveying axis 11, fixed by welding on conveying axis 11 there are four conveying blades 12.
As shown in Figure 1 and Figure 2, dredging mechanism includes appendix 8, and in the present embodiment, the quantity of appendix 8 is four, defeated
The tube wall that the gas outlet of tracheae 8 passes through installing pipe 6 is located in installing pipe 6, and the end is vertically upward, the air inlet of appendix 8 with
Air compressor machine 20 is connected, and solenoid valve 9 is provided in appendix 8, and the control that can control the work of solenoid valve 9 is additionally provided in rack 1
Structure；Control structure includes elastic piece 15, travel switch 14 and the first controller 5, and 15 one end of elastic piece is fixed on guide pipe 3
On tube wall, one end of elastic piece 15 is fixed on by welding on the tube wall of guide pipe 3；15 other end of elastic piece is freely
End, travel switch 14 are fixed on the tube wall of guide pipe 3, and travel switch 14 is fixed on guide pipe 3 by bolted connection
Tube wall on, guide housing 13 is additionally provided with above travel switch 14, avoidable material is fallen on travel switch 14；And stroke is opened
It closes 14 and is located at 15 top of elastic piece, the free end of elastic piece 15 can be contacted with travel switch 14, and travel switch 14 and solenoid valve 9 are equal
It is connected with first controller 5, in the present embodiment, the first controller 5 is using the controller that can be bought in the market, controller
Control travel switch and solenoid valve program be it is existing, program does not need to update.
As shown in figure 3, sorting mechanism includes screen plate 31, vibration motor 32, discharge nozzle 35 and the first asepwirator pump 34, screening
The setting of plate 31 is being decomposed in tank 30, and screen plate 31 is located at decomposition 30 top of tank, offers several material paths on screen plate 31,
This embodiment example, the quantity of material path are 500；Vibration motor 32 is fixed on screen plate 31 by mounting rack 33, passes through shake
Dynamic motor 32 makes screen plate 31 generate vibration, and avoidable material path blocks；35 one end of discharge nozzle and decomposition 30 top phase of tank
Connection, 35 other end of discharge nozzle are connected with collecting tank 47, and the first asepwirator pump 34 is arranged in discharge nozzle 35.
As shown in figure 3, recovering mechanism includes recovery tube 26 and the second asepwirator pump 27,26 one end of recovery tube and decompose under tank 30
Portion is connected, and 26 other end of recovery tube is connected with storage tank 7, and the second asepwirator pump 27 is arranged in recovery tube 26.
As shown in figure 3, the regulating and controlling mechanism for being adjustable 22 flow of the first communicating pipe is additionally provided in rack 1, regulating and controlling mechanism packet
Include pressure sensor 23, first flow regulating valve 21 and second controller 24, pressure sensor 23 and first flow regulating valve 21
It is successively set in the first communicating pipe 22, and pressure sensor 23 is located at first flow regulating valve 21 and decomposes between tank 30, pressure
Force snesor 23 and first flow regulating valve 21 are connected with the second controller 24, in the present embodiment, second controller 24
Using the single-chip microcontroller that can be bought in the market, it is existing, journey that single-chip microcontroller, which controls sensor and the program of first flow regulating valve,
Sequence does not need to update；Using the structure, signal is passed to by second controller 24, the second control by pressure sensor 23
Device 24 controls the opening degree of first flow regulating valve 21, so that the dynamic regulation of 22 flow of the first communicating pipe can be realized, regulates and controls
Precisely.
As shown in Figure 5, Figure 6, locating piece includes rubber ring 54, and rubber ring 54 is arranged and is fixed on the output end of efferent duct 42
On 42b, there are several protrusions on 54 lateral surface of rubber ring, in the present embodiment, the quantity of protrusion is 50, by convex
Portion can increase the frictional force between rubber ring 54 and material bag out.
As shown in Figure 5, Figure 6, dust collection mechanism includes the first blower 53, third asepwirator pump 44 and air intake duct 45, the first blower
53 are fixed in baffle box 46, and the first blower 53 is fixed on by bolted connection in baffle box 46；And first blower 53
Above efferent duct 42, the outlet air mouth down of the first blower 53,45 one end of air intake duct is connected with 46 bottom of baffle box, air-breathing
45 other end of pipe is connected with third asepwirator pump 44, and filter bag 51 is provided in air intake duct 45, and filter bag 51, which uses, in the market may be used
With the existing product bought；It is provided with second flow regulating valve 43 in air intake duct 45, using the structure, is adjusted by second flow
The big of suction in air intake duct 45 is adjusted in valve 43.
As shown in figure 5, driving mechanism includes motor 49, driving gear 48 and driven gear 50, motor 49 is fixed on rack 1
On, motor 49 is fixed on by bolted connection in rack 1；Driving gear 48 is fixed on the output shaft of motor 49, main
The mode that moving gear 48 is connected by key is fixed on the output shaft of motor 49；Driven gear 50 is fixed on output screw 40,
Driven gear 50 is fixed on by bolted connection on output screw 40；Driving gear 48 is meshed with driven gear 50.
As shown in fig. 7, being also provided with observation panel in baffle box 46, it is provided with transparent access panel 55 at observation panel, observes
Plate 55 can be viewed inside baffle box 46 using the structure by access panel 55 using the organic plates that can be bought in the market
Operation irregularity.
As shown in figure 8, being provided in rack 1 for carrying out cooling cooling body to air compressor machine 20, cooling body includes
Mounting bracket 64 and the second blower 69, mounting bracket 64 are arranged in rack 1, have damping between mounting bracket 64 and rack 1
Block 63 can reduce the vibration at mounting bracket 64 by damping block 63 using the structure, small using noise；Second blower 69 is logical
The mobile mechanism that one can drive it to move horizontally to be crossed to be arranged in mounting bracket 64, the second blower 69 is located at 20 top of air compressor machine,
And second blower 69 air outlet towards air compressor machine 20.
As shown in Figure 8, Figure 9, mobile mechanism includes the first arc-shaped guide rail 65, the first sliding block 75, mounting plate 68, servo
Motor 67 and gear 66, the first guide rail 65 are fixed in mounting bracket 64, and the first guide rail 65 is fixed by bolted connection
In mounting bracket 64；And first guide rail 65 intrados on have teeth 65a, the first sliding block 75 be arranged in the first guide rail 65
In, the first sliding block 75 can be moved along the first guide rail 65；Mounting plate 68 is fixed on the first sliding block 75, and mounting plate 68 passes through bolt
The mode of connection is fixed on the first sliding block 75；Servo motor 67 is fixed on 68 upper surface of mounting plate, and servo motor 67 passes through spiral shell
Tether the upper surface that the mode connect is fixed on mounting plate 68；Straight down, gear 66 is fixed on to be watched the output shaft of servo motor 67
On the output shaft for taking motor 67, the mode that gear 66 is connected by key is fixed on the output shaft of servo motor 67；Gear 66 with
The teeth 65a of first guide rail 65 is meshed, and the second blower 69 can drive the lower elevating mechanism setting gone up and down thereon pacifying by one
68 lower surface of loading board.
As shown in Figure 8, Figure 9, elevating mechanism includes push-rod electric machine 71, the second sliding block 72 and the second guide rail 73, the second guide rail
73 are fixed on 68 lower surface of mounting plate by connection frame 74, and the second sliding block 72 is arranged in the second guide rail 73, and the second sliding block 72 can
It is moved along the second guide rail 73；Push-rod electric machine 71 is fixed on 68 lower surface of mounting plate, the side that push-rod electric machine 71 is bolted
Formula is fixed on the lower surface of mounting plate 68；The push rod of push-rod electric machine 71 straight down, the push rod end of push-rod electric machine 71 and second
Sliding block 72 is connected, and the push rod end of push-rod electric machine 71 is connected with the second sliding block 72 by bolted connection；Second blower 69
It is fixed on the second sliding block 72, the second blower 69 is fixed on by bolted connection on the second sliding block 72.
As shown in figure 8, being additionally provided with the control mechanism that can control 67 start and stop of servo motor in rack 1, control mechanism includes
If dry temperature sensor 70, display screen 61 and third controller 60, in the present embodiment, the quantity of temperature sensor 70 is four
It is a；If dry temperature sensor 70 is separately positioned on air compressor machine 20, and temperature sensor 70 is evenly arranged, and display screen 61 is fixed on
In rack 1, display screen 61 is fixed on by bolted connection in rack 1；Temperature sensor 70, display screen 61 and servo electricity
Machine 67 is connected with the third controller 60；In the present embodiment, third controller 60 is using the monolithic that can be bought in the market
Machine, single-chip microcontroller controls sensor, the program of motor and display screen be it is existing, program does not need to update.
The working principle of airflow comminution system is as follows: the output shaft of control decelerating motor 2 drives conveying axis 11 to rotate, conveying
Axis 11 drives conveying blade 12 to rotate, former by the feedstock transportation of storage tank 7 into guide pipe 3 with the rotation of conveying blade 12
Material is entered under the effect of gravity in feed pipe 4, to realize its feeding operation；Raw material in feed pipe 4 is passed through
Feeder sleeve 36, which is transported to, to be decomposed in tank 30, and compressed air is transported to by air supply pipe 28 and is decomposed in tank 30 by air compressor machine 20,
High speed impact of the raw material by air generates between each other and rubs and resolve into nanoscale powder material；The first asepwirator pump 34 is opened, is accorded with
The material path that desired particle passes through screen plate 31 is closed, is transported in collecting tank 47 by discharge nozzle 35；Second is opened to inhale
Air pump 27 is transported in storage tank 7 by recovery tube 26, is decomposed again to it, to complete its apportioned effort；It will
Material bag covers on the output end 42b of efferent duct 42, is positioned material bag by the elastic force of rubber ring 54, control motor 49
Output shaft drives driving gear 48 to rotate, and driving gear 48 drives driven gear 50 to rotate, and driven gear 50 drives output screw
40 rotations, with the rotation of output screw 40, the nanoscale powder material in collecting tank 47 is transported in material bag, passes through the first wind
Machine 53 conveys downwards the air in baffle box 46, and dust is moved down with air, by third asepwirator pump 44 by baffle box
46 dust absorption, in suction filter bag 51, to realize that its collects operation.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (5)
1. the preparation method of the nano silica of improvement, which comprises the following steps:
A, it prepares: the Na that the NaCl aqueous solution for being 7.5% by high-purity water compound concentration, concentration are 45%2SiO3 Aqueous solution and
Concentration is 13.5% dilute hydrochloric acid solution；
B, it reacts: by the NaCl aqueous solution prepared in step a, Na2SiO3Aqueous solution and dilute hydrochloric acid solution be poured into reaction kettle into
Row reaction, reaction time 10-40min；
C, it is aged: the solution after reacting in reaction kettle being introduced into storage tank and is aged, colloidal sol is formed；
D, pressure filtration washing: the colloidal sol after ageing is transported in filter press and carries out filters pressing, and is cleaned 3-5 times with deionized water；
E, drying: wet cake obtained in step d is dried by baking oven；
F, it crushes: the powder granule after drying being crushed by airflow comminution system, is crushed to 30-60nm, nanometer is made
Silica；Airflow comminution system in the step f includes rack, and feed device, decomposer are provided in the rack
And collection device, the feed device include storage tank and feed pipe, storage tank is fixed on rack by bolted connection
On, storage tank upper end has input port, and storage tank lower end is connected by guide pipe with the tube wall of feed pipe, storage tank and guiding
Installing pipe is provided between pipe, installing pipe upper end is connected with storage tank lower end, and installing pipe lower end is connected with guide pipe, installation
There is the conveying mechanism that material in storage tank can be transported to guide pipe on pipe, be provided with and storage tank lower end can be dredged in rack
Dredging mechanism；The decomposer includes decomposing tank, positioning ring, several air supply pipes, feeder sleeve and air compressor machine, decomposes tank setting
On the rack, positioning ring setting is in decomposition tank, and positioning ring is located in the middle part of decomposition tank, and the outlet side of several air supply pipes, which passes through, to be divided
Solution pot sidewall is fixed on positioning ring, and outlet side is towards positioning ring center, the inlet end of air supply pipe by the first communicating pipe and
Air compressor machine is connected, and the discharge end of feeder sleeve, which is fixed on, to be decomposed in tank, and discharge end, towards positioning ring, the feed end of feeder sleeve is worn
It crosses decomposition pot sidewall to be connected with feed pipe, decomposes tank top and be provided with sorting mechanism, decompose tank lower part and be provided with recovering mechanism；
The collection device includes collecting tank, efferent duct and output screw, and collecting tank is fixed on the rack by bolted connection,
Collecting tank upper end has import, and the import of collecting tank is connected with tank top is decomposed, and collecting tank lower end has outlet, collecting tank
Outlet is connected with the tube wall of efferent duct, and efferent duct one end is closed end, and the efferent duct other end is output end, is arranged on output end
There is locating piece used for positioning, output screw one end is located in efferent duct, and the output screw other end is pierced by the closed end of efferent duct
The driving mechanism that it can be driven to rotate with one is connected, and is further fixed on baffle box, baffle box in rack by bolted connection
Side has opening, and the chamber door that can live closure of openings is hinged in baffle box, and the output end of efferent duct passes through baffle box side wall
Being additionally provided in baffle box, in rack can be by the dust collection mechanism of dust absorption in baffle box；The conveying mechanism includes defeated
Axis and decelerating motor are sent, conveying axis is horizontally set in installing pipe, and conveying axis is located at below the gas outlet of appendix, conveying axis
End is connected with the output shaft of decelerating motor, and several conveying blades are fixed on conveying axis；The dredging mechanism includes appendix,
The tube wall that the gas outlet of appendix passes through installing pipe is located in installing pipe, and the end is vertically upward, the air inlet of appendix and upper
It states air compressor machine to be connected, solenoid valve is provided in appendix, the control structure that can control electromagnetic valve work is additionally provided in rack；
The sorting mechanism includes screen plate, vibration motor, discharge nozzle and the first asepwirator pump, and screen plate setting is being decomposed in tank, and is sieved
It selecting plate to be located at and decomposes tank top, offer several material paths on screen plate, vibration motor is fixed on screen plate by mounting rack,
Discharge nozzle one end is connected with tank top is decomposed, and the discharge nozzle other end is connected with collecting tank, and the setting of the first asepwirator pump is discharging
Guan Zhong.
2. the preparation method of the nano silica of improvement according to claim 1, which is characterized in that the locating piece packet
Rubber ring is included, rubber ring is arranged and is fixed on the output end of efferent duct, has several protrusions on rubber ring lateral surface.
3. the preparation method of the nano silica of improvement according to claim 1, which is characterized in that the dust collection mechanism
Including the first blower, third asepwirator pump and air intake duct, the first blower is fixed in baffle box, and the first blower is located on efferent duct
Side, the outlet air mouth down of the first blower, air intake duct one end are connected with baffle box bottom, the air intake duct other end and third asepwirator pump
It is connected, filter bag is provided in air intake duct.
4. the preparation method of the nano silica of improvement according to claim 1, which is characterized in that the driving mechanism
Including motor, driving gear and driven gear, motor is fixed on the rack, and driving gear is fixed on the output shaft of motor, from
Moving gear is fixed on output screw, and driving gear is meshed with driven gear.
5. the preparation method of the nano silica of improvement according to claim 1, which is characterized in that set in the rack
It is equipped with for carrying out cooling cooling body to air compressor machine, cooling body includes mounting bracket and the second blower, and mounting bracket is set
It sets on the rack, there is damping block between mounting bracket and rack, the second blower passes through a movement that it can be driven to move horizontally
Mechanism is arranged in mounting bracket, and the second blower is located at air compressor machine top, and the air outlet of the second blower is towards air compressor machine.
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| CN201711293249.6A CN107954430B (en) | 2016-08-15 | 2016-08-15 | The preparation method of the nano silica of improvement |
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| CN201711293249.6A CN107954430B (en) | 2016-08-15 | 2016-08-15 | The preparation method of the nano silica of improvement |
| CN201610663727.7A CN106335904B (en) | 2016-08-15 | 2016-08-15 | A kind of preparation method of nano silicon dioxide |
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| CN201711293306.0A Active CN107986288B (en) | 2016-08-15 | 2016-08-15 | The preparation method of improved nano silica |
| CN201711293249.6A Active CN107954430B (en) | 2016-08-15 | 2016-08-15 | The preparation method of the nano silica of improvement |
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| CN106335904B (en) * | 2016-08-15 | 2018-05-18 | 浙江晶雅玻璃科技有限公司 | A kind of preparation method of nano silicon dioxide |
| CN107631643B (en) * | 2017-09-19 | 2019-07-02 | 长兴谐达能源科技有限公司 | A kind of biomass granulation cooling device for processing |
| CN107773772B (en) * | 2017-11-17 | 2020-07-28 | 珠海市梦幻香日用品有限公司 | Antibacterial deodorizing aromatherapy silica gel and production process thereof |
| CN109647568A (en) * | 2018-12-26 | 2019-04-19 | 江苏纳沛斯半导体有限公司 | A kind of semiconductor crystal wafer production silica grinding device |
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| CN101874811A (en) * | 2009-12-11 | 2010-11-03 | 天津兆阳纳米科技有限公司 | Preparation method of silica modified nano pearl powder |
| CN102633267A (en) * | 2012-04-19 | 2012-08-15 | 浙江宇达化工有限公司 | Preparation method of nano SiO2 |
| CN103466645A (en) * | 2013-09-27 | 2013-12-25 | 上海冠旗电子新材料股份有限公司 | Method for preparing nano-silica by wet grinding |
| CN104211072A (en) * | 2014-09-12 | 2014-12-17 | 唐山曹妃甸泰弘晟达新材料有限公司 | Nano silicon dioxide production process technology |
| CN104828828A (en) * | 2015-05-08 | 2015-08-12 | 江西纳宇纳米新材料有限公司 | Small-particle-size ultrahigh-specific-area nano silicon oxide |
| CN106335904B (en) * | 2016-08-15 | 2018-05-18 | 浙江晶雅玻璃科技有限公司 | A kind of preparation method of nano silicon dioxide |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008162813A (en) * | 2006-12-27 | 2008-07-17 | Matsushita Electric Ind Co Ltd | Method for producing silicon oxide granule from silicon sludge |
| CN104556070B (en) * | 2014-12-26 | 2017-01-11 | 中天科技精密材料有限公司 | Method and device for recycling high-purity silica |
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2016
- 2016-08-15 CN CN201610663727.7A patent/CN106335904B/en not_active Expired - Fee Related
- 2016-08-15 CN CN201711293306.0A patent/CN107986288B/en active Active
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101874811A (en) * | 2009-12-11 | 2010-11-03 | 天津兆阳纳米科技有限公司 | Preparation method of silica modified nano pearl powder |
| CN102633267A (en) * | 2012-04-19 | 2012-08-15 | 浙江宇达化工有限公司 | Preparation method of nano SiO2 |
| CN103466645A (en) * | 2013-09-27 | 2013-12-25 | 上海冠旗电子新材料股份有限公司 | Method for preparing nano-silica by wet grinding |
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| CN106335904B (en) * | 2016-08-15 | 2018-05-18 | 浙江晶雅玻璃科技有限公司 | A kind of preparation method of nano silicon dioxide |
Also Published As
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|---|---|
| CN106335904B (en) | 2018-05-18 |
| CN106335904A (en) | 2017-01-18 |
| CN107954430A (en) | 2018-04-24 |
| CN107986288A (en) | 2018-05-04 |
| CN107986288B (en) | 2019-07-12 |
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