CN114543466A - Post-production treatment equipment for silicon micropowder - Google Patents

Post-production treatment equipment for silicon micropowder Download PDF

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Publication number
CN114543466A
CN114543466A CN202210049402.5A CN202210049402A CN114543466A CN 114543466 A CN114543466 A CN 114543466A CN 202210049402 A CN202210049402 A CN 202210049402A CN 114543466 A CN114543466 A CN 114543466A
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CN
China
Prior art keywords
drying cylinder
silicon
silicon micropowder
post
heating rod
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Granted
Application number
CN202210049402.5A
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Chinese (zh)
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CN114543466B (en
Inventor
胡林政
李�杰
童友龙
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Suzhou Jinyi New Material Technology Co ltd
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Suzhou Jinyi New Material Technology Co ltd
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Publication of CN114543466A publication Critical patent/CN114543466A/en
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Publication of CN114543466B publication Critical patent/CN114543466B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
    • F26B11/0468—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for disintegrating, crushing, or for being mixed with the materials to be dried
    • F26B11/0472—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for disintegrating, crushing, or for being mixed with the materials to be dried the elements being loose bodies or materials, e.g. balls, which may have a sorbent effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/02—Applications of driving mechanisms, not covered by another subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/04—Agitating, stirring, or scraping devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/14—Chambers, containers, receptacles of simple construction
    • F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2230/00—Specific aspects relating to the whole B07B subclass
    • B07B2230/04—The screen or the screened materials being subjected to ultrasonic vibration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Silicon Compounds (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention relates to the technical field of silicon powder production, and particularly discloses a silicon powder production post-treatment device which comprises a sedimentation tank, an acid-base washing device, a grading kettle, an overflow system, a centrifuge, a dryer, an ultrasonic screening machine and a bagging treatment mechanism which are sequentially connected, wherein stirring blades are arranged in the sedimentation tank, the front end of the sedimentation tank is provided with the washing and drying device, a drain pipe of the washing and drying device is communicated with a sewage inlet of the water treatment device, a rotating paddle is arranged in the acid-base washing device, and a discharge end of the ultrasonic screening machine is communicated with a feed end of the bagging treatment mechanism. According to the invention, the screw conveying blade conveys the silicon micropowder, the silicon micropowder is contacted with the conveying surface of the screw conveying blade, and the conveying surface is a frosted surface, so that the silicon micropowder is frequently in frictional contact with the surface of the conveyed silicon micropowder to rub and remove diamond-shaped irregular corners on the surface of the silicon micropowder, and the silicon micropowder is closer to a sphere.

Description

Post-production treatment equipment for silicon micropowder
Technical Field
The invention relates to the technical field of silicon powder production, in particular to post-production treatment equipment for silicon powder.
Background
The silicon micropowder is a non-toxic, tasteless and pollution-free inorganic non-metallic material; because of its excellent properties of good temperature resistance, acid and alkali corrosion resistance, high thermal conductivity, high insulation, low expansion, stable chemical properties, large hardness and the like, it is widely used in the fields of chemical industry, electronics, Integrated Circuits (IC), electrical appliances, plastics, coatings, high-grade paints, rubbers, national defense and the like; with the rapid development of the high-tech field, the silicon micro powder will step into a new historical development period; the silicon micropowder is prepared from natural quartz (SiO2) or fused quartz (amorphous SiO2 obtained by melting and cooling natural quartz at high temperature) by crushing, ball milling (or vibration or jet milling), flotation, acid cleaning and purification, high-purity water treatment and the like.
The main purpose of the silicon micropowder is a plastic package material and a packaging material for integrated circuits and electronic elements, under the condition of low ball milling production cost, the silicon micropowder is mostly ball milled in the production process, the appearance of the produced silicon micropowder is mostly rhombus in irregular shape, the viscosity between the silicon micropowder is larger than that of spherical silicon micropowder when the silicon micropowder is used for the plastic package material of the electronic elements, the filling rate is low, meanwhile, certain burrs exist on the outer surface of a plastic package part due to the irregular rhombus shape, and the surface smoothness and quality of the plastic package part are affected, so that the silicon micropowder production post-processing equipment is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a post-production treatment device for silicon micropowder.
In order to achieve the purpose, the invention adopts the following technical scheme:
a post-production treatment device for silicon micropowder comprises a sedimentation tank, an acid-base washing device, a grading kettle, an overflow system, a centrifugal machine, a dryer, an ultrasonic screening machine and a bagging treatment mechanism which are sequentially connected, wherein a stirring blade is arranged in the sedimentation tank, a washing and drying device is arranged at the front end of the sedimentation tank, a drain pipe of the washing and drying device is communicated with a sewage inlet of the water treatment device, a rotating paddle is arranged in the acid-base washing device, and the discharge end of the ultrasonic screening machine is communicated with the feed end of the bagging treatment mechanism;
bagging-off processing mechanism includes the mounting panel, the mounting panel side is rotated and is connected with the heating rod, it has cup jointed the section of thick bamboo of drying to rotate on the heating rod, the section of thick bamboo side of drying is connected with direction supporting component and bagging-off subassembly, the mounting panel top be provided with section of thick bamboo matched with drive assembly dries, be provided with conveying component in the section of thick bamboo of drying, the section of thick bamboo of drying is close to one side of mounting panel install with the charging box that the section of thick bamboo of drying is linked together.
Preferably, the conveying assembly comprises a spiral conveying blade, a plurality of fixing rods and a guide sleeve, the spiral conveying blade is spirally wound on the heating rod, the spiral conveying blade is located in the drying cylinder, the fixing rods are fixed on the outer wall of the heating rod, the guide sleeve rotates and is sleeved on the outer wall of the fixing rods, the fixing rods are located between adjacent blades of the spiral conveying blade, the blade conveying face of the spiral conveying blade is a frosting face, a frosting point is arranged on the outer wall of the guide sleeve, a plurality of copper bumps are arranged on the inner wall of the drying cylinder, and a heating ring is fixedly sleeved on the outer wall of the drying cylinder.
Preferably, the PH value detector is installed at acid-base washing unit top, a plurality of waste water conveyer pipes of acid-base washing unit bottom intercommunication, a plurality of waste water conveyer pipes are linked together with a plurality of sewage water inlets of water treatment facilities respectively, acid-base washing unit's discharging pipe with hierarchical cauldron is linked together, hierarchical cauldron the discharge gate with overflow system's feed inlet is linked together, just hierarchical cauldron with be equipped with the flowmeter between the overflow system.
Preferably, the guide support assembly comprises a fixing plate fixed at the end part of the heating rod, one end of the heating rod penetrates through the drying cylinder and is rotatably connected with the fixing plate, a bearing is installed at one side, close to the drying cylinder, of the fixing plate, the end part of the heating rod is installed on the inner ring of the bearing, bottom plates are fixed at the bottoms of the mounting plate and the fixing plate, and fixing holes are formed in the bottom plates.
Preferably, a connecting rod is fixed on one side of the drying cylinder close to the fixing plate, a sliding block is fixed at one end of the connecting rod, an annular sliding groove is formed in one side of the fixing plate close to the drying cylinder, and the sliding block is slidably mounted in the sliding groove.
Preferably, the bagging assembly is including installing drying cylinder is close to the discharging pipe of fixed plate one side, the discharging pipe with drying cylinder is linked together, drying cylinder is close to one side of fixed plate is fixed with the stand pipe, the discharging pipe is located in the stand pipe, the opening has been seted up to the stand pipe outer wall.
Preferably, a through hole is formed in the side face of the fixing plate, the guide pipe is located in the through hole, the end portion of the guide pipe is communicated with a horn mouth, the mounting plate is far away from one side of the drying cylinder, a protective shell is installed on one side of the drying cylinder, the motor is located in the protective shell, and heat dissipation holes matched with the motor are formed in the side face of the protective shell.
Preferably, the motor is installed on one side of the mounting plate, which is far away from the drying drum, and an output shaft of the motor penetrates through the mounting plate and is connected with the heating rod.
Preferably, the driving assembly comprises a connecting plate fixed at the top of the mounting plate, a shaft sleeve is installed at the top of the connecting plate, a rotating shaft is installed in the shaft sleeve, a gear is fixedly arranged at the end part of the rotating shaft, a gear ring meshed with the gear is fixedly sleeved on the outer wall of the drying cylinder, belt pulleys are fixedly sleeved on the output shaft of the motor and the outer wall of the rotating shaft, and the belt pulleys are driven by a belt.
Preferably, an output shaft of the motor is connected with the heating rod through a coupler, and a limiting block is fixed at one end, far away from the gear, of the rotating shaft.
Compared with the prior art, the invention has the beneficial effects that:
1: according to the invention, the spiral conveying blade conveys the silicon powder, the silicon powder is in contact with the conveying surface of the spiral conveying blade, and the conveying surface is a frosted surface, the silicon powder is in frequent frictional contact with the surface of the conveyed silicon powder to remove diamond irregular corners on the surface of the silicon powder in a friction manner to enable the silicon powder to be closer to a spherical shape, the fixed rod and the guide sleeve can provide blocking and shunting effects on the silicon powder conveyed on the spiral conveying blade, so that the silicon powder is uniformly in frictional contact with the frosted surface of the spiral conveying blade on the spiral conveying blade, the guide sleeve can guide the contacted silicon powder, meanwhile, the frosted points on the outer surface of the guide sleeve and the silicon powder generate friction to remove a certain amount of diamond corners on the surface of the silicon powder, the silicon powder is conveyed by the spiral conveying blade while being turned over in the drying cylinder by matching with the drying cylinder and reversely rotating the spiral conveying blade, and the conveying effect of the spiral conveying blade on the silicon powder can be accelerated by the reversely rotating of the spiral conveying blade The friction frequency of the silicon powder and the conveying surface of the spiral conveying blade is accelerated, the silicon powder is dried by the heating rod, the moisture in the air absorbed by the silicon powder in the production process is removed, the drying performance of the silicon powder is kept, the caking phenomenon of the silicon powder in the storage process is avoided, and the heating rod is matched with the heating ring for use, the silicon micro powder is subjected to high-temperature drying and high-temperature sterilization at the same time, so that the phenomena of mildew, moth breeding and the like in the storage process are avoided, the silicon micro powder is overturned under the rotation action of the drying cylinder, impact and friction are frequently generated among the silicon micro powder, the diamond corners of the silicon micro powder can be gradually impacted and rubbed off, so that the silicon micro powder is gradually close to the spherical silicon micro powder, thereby improving the filling rate and reducing the viscosity when the epoxy resin is used for the electronic component plastic packaging material, and improving the surface smoothness and quality of the produced plastic packaging part.
2: according to the invention, under the reverse rotation action of the drying cylinder and the spiral conveying blade, silicon powder in the drying cylinder is dried and heated more uniformly, the silicon powder frequently rubs and impacts with copper salient points on the inner wall of the drying cylinder to remove rhombic irregular corners close to a spherical shape, the copper salient points can conveniently absorb and transmit heat of a heating ring absorbed by the drying cylinder, the heat can be uniformly transmitted between the silicon powder in the drying cylinder, the silicon powder is uniformly heated and dried, when the spiral conveying blade and the drying cylinder rotate reversely, the silicon powder is conveyed to one side under the action of the spiral conveying blade, the silicon powder accumulated on one side of the drying cylinder is extruded into a packaging bag sleeved on the outer wall of a discharge pipe by the spiral conveying blade to complete bagging and packaging of the silicon powder, and meanwhile, the extrusion force generated by the silicon powder continuously conveyed by the spiral conveying blade to the silicon powder accumulated on one side is continuously utilized to extrude and compact the silicon powder in the packaging bag, improve the bagging-off volume of silica fume in the wrapping bag, and silica fume directly gets into in the wrapping bag through spiral delivery vane and a stoving section of thick bamboo and accomplishes the packing bagging-off, and contact the moisture in the resorption air once more and wet with the air when avoiding later stage bagging-off packing, avoid simultaneously that the dust that floats in the air falls to influence the quality of silica fume in the silica fume.
3: according to the invention, the motor drives the rotating shaft to rotate through the belt pulley and the belt so that the gear drives the gear ring to rotate, the motor drives the drying cylinder to rotate in a reverse direction in cooperation with the drying cylinder while driving the heating rod and the spiral conveying blade to rotate, the drying cylinder and the spiral conveying blade are tightly matched, the drying cylinder and the spiral conveying blade can be stopped to work simultaneously only by turning off the motor, the impact friction effect of silicon micropowder is prevented from being influenced due to the fact that the impact friction degree of the silicon micropowder changes when one party stops and the other party stops untimely after the other party stops, and meanwhile, the effect of uniformly heating and drying the silicon micropowder is prevented from being influenced.
Drawings
FIG. 1 is an isometric view of the bagging processing mechanism of the invention;
FIG. 2 is a cross-sectional view of the bagging mechanism of the invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
FIG. 4 is a cross-sectional view of the bagging process mechanism of the invention;
FIG. 5 is a schematic view of the connection of the heating rod of the present invention to the screw blade;
FIG. 6 is a partial enlarged view of portion B of FIG. 5;
FIG. 7 is a production flow chart of the post-production treatment equipment for fine silicon powder of the present invention.
In the figure: 1. mounting a plate; 2. a protective shell; 3. a base plate; 4. a connecting plate; 5. a shaft sleeve; 6. A rotating shaft; 7. a gear; 8. a toothed ring; 9. a drying drum; 10. a heating ring; 11. a feed box; 12. A heating rod; 13. a connecting rod; 14. a slider; 15. a fixing plate; 16. a bearing; 17. a belt pulley; 18. a belt; 19. a bell mouth; 20. a screw conveying blade; 21. a discharge pipe; 22. A guide tube; 23. a motor; 24. fixing the rod; 25. a guide sleeve; 26. a chute; 27. an ultrasonic screening machine; 28. a dryer; 29. a centrifuge; 30. an overflow system; 31. a classification kettle; 32. an acid-base washing device; 33. a sedimentation tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-7, a post-production treatment device for silicon micropowder comprises a sedimentation tank 33, an acid-base washing device 32, a grading kettle 31, an overflow system 30, a centrifugal machine 29, a dryer 28, an ultrasonic screening machine 27 and a bagging treatment mechanism which are connected in sequence, wherein a stirring blade is installed in the sedimentation tank 33, a washing and drying device is arranged at the front end of the sedimentation tank 33, a drain pipe of the washing and drying device is communicated with a sewage inlet of the water treatment device, a rotating paddle is arranged in the acid-base washing device 32, and a discharge end of the ultrasonic screening machine 27 is communicated with a feed end of the bagging treatment mechanism;
the washing and drying device is used for washing and drying the raw material to be processed, the sedimentation tank 33 is used for carrying out sedimentation treatment on the silicon micropowder raw material, the stirring time of the stirring blades in the sedimentation tank 33 is 2-3 hours during sedimentation treatment, and the sedimentation time after stirring is 4-5 hours.
The bagging processing mechanism comprises a mounting plate 1, wherein a heating rod 12 is rotatably connected to the side surface of the mounting plate 1, a drying cylinder 9 is rotatably sleeved on the heating rod 12, a guide support assembly and a bagging assembly are connected to the side surface of the drying cylinder 9, a driving assembly matched with the drying cylinder 9 is arranged at the top of the mounting plate 1, a conveying assembly is arranged in the drying cylinder 9, and a feeding box 11 communicated with the drying cylinder 9 is arranged on one side, close to the mounting plate 1, of the drying cylinder 9;
conveying assembly includes screw conveying blade 20, a plurality of dead lever 24 and uide bushing 25, 20 spiral winding of screw conveying blade is on heating rod 12, and screw conveying blade 20 is located a stoving section of thick bamboo 9, a plurality of dead lever 24 are all fixed at the 12 outer walls of heating rod, uide bushing 25 rotates and cup joints at 24 outer walls of dead lever, dead lever 24 is located between screw conveying blade 20's the adjacent blade, screw conveying blade 20's blade transport face is the frosting, the uide bushing 25 outer wall is seted up there is the dull polish point, 9 inner walls of a stoving section of thick bamboo are provided with a plurality of copper bumps, 9 outer wall of a stoving section of thick bamboo are fixed to be cup jointed has heating ring 10.
The washing and drying device may be any device capable of washing and drying the raw material in the prior art, and the embodiment of the present invention is not particularly limited.
In the embodiment of the present invention, the types of the centrifuge 29 and the dryer 28 are not particularly limited, for example: the centrifuge 29 may be a PGZ scraper down-discharge centrifuge or the like, and the dryer 28 may be: an SZG series double-cone rotary vacuum drier and the like.
In the embodiment of the present invention, the model of the ultrasonic screening machine 27 may be: HC400-1S ultrasonic vibration sieve, PH value detector can be Mike MIK-pH6.0 high precision industry on-line pH/orp detector.
In the embodiment of the invention, the concentration of the silicon powder solution sent into the centrifugal machine 29 is controlled to be 47-52%, the centrifugal time is controlled to be 26-28 minutes, the silicon powder is purified through centrifugal treatment, and the silicon powder after the centrifugal treatment is sent into the dryer 28 for drying treatment. The dried silicon micropowder enters an ultrasonic screening machine 27 for ultrasonic vibration screening to obtain the screened silicon micropowder.
As a technical optimization scheme of the invention, the conveying assembly comprises a spiral conveying blade 20, a plurality of fixing rods 24 and a guide sleeve 25, wherein the spiral conveying blade 20 is spirally wound on the heating rod 12, the spiral conveying blade 20 is positioned in the drying cylinder 9, the fixing rods 24 are all fixed on the outer wall of the heating rod 12, the guide sleeve 25 is rotatably sleeved on the outer wall of the fixing rods 24, the fixing rods 24 are positioned between adjacent blades of the spiral conveying blade 20, the blade conveying surface of the spiral conveying blade 20 is a frosted surface, the outer wall of the guide sleeve 25 is provided with frosted points, the inner wall of the drying cylinder 9 is provided with a plurality of copper salient points, and the outer wall of the drying cylinder 9 is fixedly sleeved with a heating ring 10.
As a technical optimization scheme of the invention, a PH value detector is arranged at the top of the acid-base washing device 32, a plurality of wastewater conveying pipes are communicated with the bottom of the acid-base washing device 32 and are respectively communicated with a plurality of sewage inlets of water treatment equipment, a discharging pipe 21 of the acid-base washing device 32 is communicated with the grading kettle 31, a discharging port of the grading kettle 31 is communicated with a feeding port of the overflow system 30, and a flowmeter is arranged between the grading kettle 31 and the overflow system 30.
When the silicon powder treated by the sedimentation tank 33 enters the acid-base washing device 32 for washing, the silicon powder is firstly washed by acid: controlling the pH value to be between 5 and 6 by adding a hydrochloric acid solution, controlling the rotation time of a rotating paddle in the acid-alkali washing device 32 to be 3 to 4 hours, and performing alkali washing after discharging waste liquid: industrial alkali is added, the pH value is controlled to be 8-9, the rotating time of a rotating paddle in the acid-base washing device 32 is 3-4 hours, and waste liquid is discharged after the device is static for 1 hour.
The overflow system 30 comprises a plurality of overflow chutes communicated end to end, and the top ends of the overflow chutes at the head are communicated with the discharge hole of the classification kettle 31. Through setting up hierarchical cauldron 31 and overflow system 30, can carry out the classification of different size granules to the silica powder after the sour alkaline water washing for the silica powder after the classification can satisfy the finished product processing demand of different purities.
As a technical optimization scheme of the invention, the guiding and supporting assembly comprises a fixing plate 15 fixed at the end part of a heating rod 12, one end of the heating rod 12 penetrates through a drying cylinder 9 and is rotatably connected with the fixing plate 15, a bearing 16 is installed at one side of the fixing plate 15 close to the drying cylinder 9, the end part of the heating rod 12 is installed at the inner ring of the bearing 16, the bearing 16 can provide guiding and supporting functions for the heating rod 12, the stability of the heating rod 12 in rotating operation is improved, a bottom plate 3 is fixed at the bottom of each of the mounting plate 1 and the fixing plate 15, a fixing hole is formed in the bottom plate 3, and the bottom plate 3 and the fixing hole formed in the bottom plate can be convenient for mounting and fixing the device.
As a technical optimization scheme of the invention, a connecting rod 13 is fixed on one side of the drying cylinder 9 close to the fixing plate 15, a sliding block 14 is fixed on the connecting rod 13, an annular sliding groove 26 is formed on one side of the fixing plate 15 close to the drying cylinder 9, the sliding block 14 is slidably mounted in the sliding groove 26, the sliding block 14 and the sliding groove 26 are matched for use, so that the guide can be provided for the drying cylinder 9 during rotation, and the fixing plate 15 can provide a certain supporting force for the drying cylinder 9 through the sliding block 14 and the sliding groove 26.
As a technical optimization scheme of the invention, the bagging assembly comprises a discharge pipe 21 arranged on one side of a drying cylinder 9 close to a fixing plate 15, the discharge pipe 21 is communicated with the drying cylinder 9, a guide pipe 22 is fixed on one side of the drying cylinder 9 close to the fixing plate 15, the discharge pipe 21 is positioned in the guide pipe 22, an opening is arranged on the outer wall of the guide pipe 22, when a spiral conveying blade 20 and the drying cylinder 9 rotate in opposite directions, silica fume is conveyed to one side under the action of the spiral conveying blade 20, the silica fume accumulated on one side of the drying cylinder 9 is extruded and pressed into a packaging bag sleeved on the outer wall of the discharge pipe 21 by using the continuous conveying of the spiral conveying blade 20, the silica fume in the packaging bag is extruded and compacted by using the extrusion force generated by the continuous conveying of the silica fume by the spiral conveying blade 20 on the silica fume accumulated on one side, so as to improve the bagging amount of the silica fume in the packaging bag, and the silica fume directly gets into in the packing bag and accomplishes the packing bagging-off after screw conveyor blade 20 and drying cylinder 9, and the moisture in the resorption air of contact during avoiding later stage bagging-off packing is wet again, avoids simultaneously floating dust in the air to fall to influence the quality of silica fume in the silica fume.
As a technical optimization scheme of the invention, a through hole is formed in the side surface of the fixing plate 15, the guide pipe 22 is positioned in the through hole, the end part of the guide pipe 22 is communicated with the bell mouth 19, the bell mouth 19 can facilitate bag discharging after bagging of the silicon powder in the guide pipe 22, the protective shell 2 is installed on one side of the mounting plate 1 away from the drying cylinder 9, the motor 23 is positioned in the protective shell 2, heat dissipation holes matched with the motor 23 are formed in the side surface of the protective shell 2, the protective shell 2 can provide a protection effect on the motor 23 to prevent people from touching the motor 23 by mistake, and the heat dissipation holes can facilitate heat dissipation of the motor 23 in the protective shell 2 during working.
As a technical optimization scheme of the invention, a motor 23 is arranged on one side of the mounting plate 1 far away from the drying cylinder 9, an output shaft of the motor 23 penetrates through the mounting plate 1 and is connected with a heating rod 12, and the heating rod 12 drives the spiral conveying blade 20 to rotate to convey the silicon micropowder and can be used for conveniently drying and heating the silicon micropowder in the drying cylinder 9 to a certain extent, so that water in the silicon micropowder is removed, and the phenomenon of agglomeration of the silicon micropowder in the later period is avoided.
As a technical optimization scheme of the invention, the driving assembly comprises a connecting plate 4 fixed on the top of the mounting plate 1, a shaft sleeve 5 is installed on the top of the connecting plate 4, a rotating shaft 6 is installed in the shaft sleeve 5, a gear 7 is fixed on the end part of the rotating shaft 6, a gear ring 8 meshed with the gear 7 is fixedly sleeved on the outer wall of the drying cylinder 9, belt pulleys 17 are fixedly sleeved on an output shaft of a motor 23 and the outer wall of the rotating shaft 6, the two belt pulleys 17 are driven by a belt 18, the motor 23 drives the rotating shaft 6 to rotate through the belt pulleys 17 and the belt 18 so that the gear 7 drives the gear ring 8 to rotate, the motor 23 can drive the drying cylinder 9 to rotate reversely in cooperation with the heating rod 12 and the spiral conveying blade 20 at the same time, the drying cylinder 9 and the spiral conveying blade 20 are tightly matched, and the drying cylinder 9 and the spiral conveying blade 20 can be stopped simultaneously only by turning off the motor 23, the impact friction effect of the silicon micropowder caused by the change of the impact friction force between the silicon micropowder due to the fact that one party stops and the other party stops untimely after the other party stops is avoided, and meanwhile, the effect that the silicon micropowder is uniformly heated and dried is prevented from being influenced.
As a technical optimization scheme of the invention, an output shaft of the motor 23 is connected with the heating rod 12 through a coupler, and a limiting block is fixed at one end of the rotating shaft 6, which is far away from the gear 7.
When the device is used, raw silicon micro powder processed by a sedimentation tank 33, an acid-base washing device 32, a classification kettle 31, an overflow system 30, a centrifugal machine 29, a drying machine 28 and an ultrasonic screening machine 27 in sequence is sent into a feeding box 11; the bag mouth of the packaging bag is sleeved on the discharging pipe 21, and the bag mouth of the packaging bag is tightly tied on the discharging pipe 21 through an opening formed in the outer wall of the guide pipe 22 by using a steel binding belt.
Starting the motor 23, driving the heating rod 12 to rotate by an output shaft of the motor 23, and driving the spiral conveying blade 20 to rotate by the heating rod 12; meanwhile, the output shaft of the motor 23 drives the belt pulley 17 on the output shaft of the motor 23 to rotate, so that the belt pulley 17 on the output shaft of the motor 23 drives the belt pulley 17 on the rotating shaft 6 to rotate through the belt 18, the rotating shaft 6 rotates in the shaft sleeve 5 and drives the gear 7 to rotate, the gear 7 drives the toothed ring 8 and the heating rod 12 to realize reverse rotation, and the toothed ring 8 drives the drying cylinder 9, the heating rod 12 and the spiral conveying blades 20 to rotate in reverse directions; during the rotation of the drying drum 9, the charging box 11 gradually adds the silicon micropowder into the drying drum 9.
The silicon powder entering the drying cylinder 9 is conveyed by the spiral conveying blade 20, the silicon powder is contacted with the conveying surface of the spiral conveying blade 20 in the conveying process, and the conveying surface is a frosted surface and is frequently in frictional contact with the surface of the conveyed silicon powder to rub and remove diamond-shaped irregular corners on the surface of the silicon powder, so that the silicon powder is closer to a spherical shape; meanwhile, the fixing rod 24 and the guide sleeve 25 can provide blocking and shunting functions for the silicon micropowder conveyed on the spiral conveying blade 20, so that the silicon micropowder is uniformly in frictional contact with the frosted surface of the spiral conveying blade 20 on the spiral conveying blade 20; when the silicon powder impacts the guide sleeve 25, the guide sleeve 25 is enabled to rotate on the fixing rod 24 under the action of the impact force of the silicon powder, the guide sleeve 25 can guide the contacted silicon powder, and meanwhile, the abrasive points on the outer surface of the guide sleeve 25 and the silicon powder generate friction to remove a certain amount of diamond-shaped corners on the surface of the silicon powder; the drying cylinder 9 and the spiral conveying blade 20 are matched to rotate reversely, so that the silicon micropowder is conveyed by the spiral conveying blade 20 while turning over in the drying cylinder 9, and the spiral conveying blade 20 and the drying cylinder 9 rotate reversely, so that the conveying efficiency of the spiral conveying blade 20 to the silicon micropowder can be improved, and the friction frequency of the conveying surface of the silicon micropowder and the spiral conveying blade 20 is improved; meanwhile, the heating rod 12 and the heating ring 10 are started, the silicon powder is dried by the heating rod 12 to remove moisture in the air absorbed by the silicon powder in production, the drying property of the silicon powder is kept, and the phenomenon of agglomeration of the silicon powder in storage is avoided; the heating rod 12 is used together with the heating ring 10, so that the silicon micro powder is dried at high temperature and sterilized at high temperature, and the phenomena of mildew, moth breeding and the like in the storage process are avoided; the silicon powder is overturned under the rotating action of the drying cylinder 9, impact and friction are frequently generated among the silicon powder, and diamond corners of the silicon powder can be gradually impacted and rubbed off, so that the silicon powder is gradually close to spherical silicon powder, the filling rate of the silicon powder when the silicon powder is used for electronic element plastic packaging materials is improved, the viscosity of the silicon powder is reduced, and the surface smoothness and the quality of produced plastic packaging parts are improved.
Under the reverse rotation action of the drying cylinder 9 and the spiral conveying blades 20, the silicon micro powder in the drying cylinder is dried and heated more uniformly, and meanwhile, the silicon micro powder frequently generates friction impact with copper salient points on the inner wall of the drying cylinder 9 to remove rhombic irregular corners of the silicon micro powder to be close to a sphere; the copper bumps can absorb and transfer heat of the heating ring 10 absorbed by the drying cylinder 9 conveniently, and can transfer heat to the silicon micro powder in the drying cylinder 9 uniformly to heat and dry the silicon micro powder uniformly; while the spiral conveying blade 20 and the drying cylinder 9 rotate reversely, the micro silicon powder is conveyed to one side under the action of the spiral conveying blade 20, the micro silicon powder accumulated on one side of the drying cylinder 9 is extruded into a discharge pipe 21 for discharging by utilizing the spiral conveying blade 20 to continuously convey the micro silicon powder, and the micro silicon powder enters a packaging bag sleeved on the outer wall of the discharge pipe 21 through the discharge pipe 21 to complete bagging and packaging of the micro silicon powder; meanwhile, the pushing force generated by the continuous conveying of the silicon micropowder by the spiral conveying blade 20 to the silicon micropowder accumulated on one side can be continuously utilized to tightly extrude the silicon micropowder in the packaging bag, so that the bagging amount of the silicon micropowder in the packaging bag is increased; and the silica fume directly gets into in the wrapping bag and accomplishes the packing bagging-off after screw conveyor blade 20 and a stoving section of thick bamboo 9, and contact with the moisture in the air once more and receive the tide when avoiding later stage bagging-off packing, avoid simultaneously that the floating dust in the air from wafting to influence the quality of silica fume in the silica fume.
When the silicon powder packaged in the packaging bag reaches a certain amount, the motor 23 is turned off, the motor 23 drives the rotating shaft 6 to rotate through the belt pulley 17 and the belt 18, so that the gear 7 drives the toothed ring 8 to rotate, the motor 23 can drive the drying cylinder 9 to rotate in the reverse direction in cooperation with the drying cylinder 9 while driving the heating rod 12 and the spiral conveying blade 20 to rotate, the drying cylinder 9 and the spiral conveying blade 20 are tightly matched, the drying cylinder 9 and the spiral conveying blade 20 can be stopped to work simultaneously only by turning off the motor 23, the phenomenon that the impact friction force between the silicon powder is changed due to the fact that one party stops and the other party stops untimely after the other party stops between the two parties is avoided, the impact friction effect of the silicon powder which is uniformly heated and dried can be avoided; so that the drying cylinder 9, the heating rod 12 and the spiral conveying blade 20 are stopped simultaneously when the motor 23 is closed, the steel binding belt for tightly binding the packaging bag is loosened through the opening on the outer wall of the guide pipe 22 again, the packaging bag containing a certain amount of silicon micropowder is separated from the discharging pipe 21, and the packaging bag containing the silicon micropowder is sent out through the guide pipe 22 to finish discharging; the silicon micropowder can be packaged and bagged after being treated, so that the step of packaging the silicon micropowder again at the later stage is omitted.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention should be covered by the scope of the present invention.

Claims (10)

1. The post-production treatment equipment for the silicon micropowder is characterized by comprising a sedimentation tank (33), an acid-base washing device (32), a grading kettle (31), an overflow system (30), a centrifuge (29), a dryer (28), an ultrasonic screening machine (27) and a bagging treatment mechanism which are sequentially connected, wherein stirring blades are installed in the sedimentation tank (33), a water washing and drying device is arranged at the front end of the sedimentation tank (33), a water discharge pipe of the water washing and drying device is communicated with a sewage inlet of the water treatment equipment, a rotating paddle is arranged in the acid-base washing device (32), and a discharge end of the ultrasonic screening machine (27) is communicated with a feed end of the bagging treatment mechanism;
bagging-off processing mechanism includes mounting panel (1), mounting panel (1) side is rotated and is connected with heating rod (12), it has cup jointed drying cylinder (9) to rotate on heating rod (12), drying cylinder (9) side is connected with direction supporting component and bagging-off subassembly, mounting panel (1) top be provided with drying cylinder (9) matched with drive assembly, be provided with conveying assembly in drying cylinder (9), drying cylinder (9) are close to one side of mounting panel (1) install with charging box (11) that drying cylinder (9) are linked together.
2. The post-production treatment equipment for micro silicon powder according to claim 1, the conveying component comprises a spiral conveying blade (20), a plurality of fixing rods (24) and a guide sleeve (25), the spiral conveying blade (20) is spirally wound on the heating rod (12), the spiral conveying blades (20) are positioned in the drying cylinder (9), a plurality of fixing rods (24) are fixed on the outer wall of the heating rod (12), the guide sleeve (25) is rotatably sleeved on the outer wall of the fixing rod (24), the fixing rod (24) is positioned between adjacent blades of the spiral conveying blade (20), the blade conveying surface of the spiral conveying blade (20) is a frosted surface, the outer wall of the guide sleeve (25) is provided with frosted points, the inner wall of the drying cylinder (9) is provided with a plurality of copper salient points, and the outer wall of the drying cylinder (9) is fixedly sleeved with a heating ring (10).
3. The post-production treatment equipment for silicon micropowder, according to claim 1, characterized in that a PH value detector is installed at the top of the acid-base washing device (32), a plurality of wastewater delivery pipes are communicated with the bottom of the acid-base washing device (32), the wastewater delivery pipes are respectively communicated with a plurality of sewage inlets of the water treatment equipment, a discharge pipe of the acid-base washing device (32) is communicated with the grading kettle (31), a discharge hole of the grading kettle (31) is communicated with a feed inlet of the overflow system (30), and a flow meter is arranged between the grading kettle (31) and the overflow system (30).
4. The production post-treatment equipment of silica micropowder according to claim 1, characterized in that the direction supporting component comprises a fixing plate (15) fixed at the end of the heating rod (12), one end of the heating rod (12) penetrates through the drying cylinder (9) and is rotatably connected with the fixing plate (15), a bearing (16) is installed at one side of the fixing plate (15) close to the drying cylinder (9), the end of the heating rod (12) is installed at the inner ring of the bearing (16), a bottom plate (3) is fixed at the bottom of the mounting plate (1) and the fixing plate (15), and a fixing hole is formed in the bottom plate (3).
5. The post-production treatment equipment for the silicon micropowder according to claim 4, wherein a connecting rod (13) is fixed on one side of the drying cylinder (9) close to the fixing plate (15), a sliding block (14) is fixed at one end of the connecting rod (13), an annular sliding groove (26) is formed in one side of the fixing plate (15) close to the drying cylinder (9), and the sliding block (14) is slidably mounted in the sliding groove (26).
6. The post-production treatment equipment for the silicon micropowder, according to claim 5, characterized in that the bagging component comprises a discharge pipe (21) installed on one side of the drying cylinder (9) close to the fixing plate (15), the discharge pipe (21) is communicated with the drying cylinder (9), a guide pipe (22) is fixed on one side of the drying cylinder (9) close to the fixing plate (15), the discharge pipe (21) is located in the guide pipe (22), and an opening is opened in the outer wall of the guide pipe (22).
7. The post-production treatment equipment for the silicon micropowder, according to claim 6, is characterized in that a through hole is formed in the side surface of the fixing plate (15), the guide pipe (22) is located in the through hole, the end part of the guide pipe (22) is communicated with a bell mouth (19), a protective shell (2) is installed on one side, away from the drying cylinder (9), of the mounting plate (1), a motor (23) is located in the protective shell (2), and heat dissipation holes matched with the motor (23) are formed in the side surface of the protective shell (2).
8. The post-production treatment equipment for the silicon micropowder, according to claim 7, is characterized in that the motor (23) is installed on one side of the mounting plate (1) far away from the drying cylinder (9), and the output shaft of the motor (23) penetrates through the mounting plate (1) and is connected with the heating rod (12).
9. The production post-processing equipment of silica micropowder of claim 8, characterized in that, drive assembly is including fixing connecting plate (4) at mounting panel (1) top, axle sleeve (5) are installed to connecting plate (4) top, install pivot (6) in axle sleeve (5), pivot (6) end fixing has gear (7), stoving section of thick bamboo (9) outer wall fixed cup joint with gear (7) intermeshing's ring gear (8), on the output shaft of motor (23) with pivot (6) outer wall all fixed cup joint belt pulley (17), two belt pulley (17) are through belt (18) transmission.
10. The post-production treatment equipment for the silicon micropowder according to claim 9, wherein an output shaft of the motor (23) is connected with the heating rod (12) through a coupler, and a limiting block is fixed at one end of the rotating shaft (6) far away from the gear (7).
CN202210049402.5A 2022-01-17 2022-01-17 Production post-treatment equipment for silicon micropowder Active CN114543466B (en)

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