CN203409639U - Smooth treatment device for CL-20 grains - Google Patents
Smooth treatment device for CL-20 grains Download PDFInfo
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- CN203409639U CN203409639U CN201320148248.3U CN201320148248U CN203409639U CN 203409639 U CN203409639 U CN 203409639U CN 201320148248 U CN201320148248 U CN 201320148248U CN 203409639 U CN203409639 U CN 203409639U
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Abstract
The utility model provides a smooth treatment device for CL-20 grains. The device comprises smooth grinding equipment and agitating and aging equipment, wherein a discharging opening of a smooth grinding cavity is connected with a feeding opening of an agitating and aging cavity by a pipeline; the discharging opening of the agitating and aging cavity is connected with the feeding opening of the smooth grinding cavity by a pipeline and a discharging valve is arranged on the position on the pipeline, which is close to the agitating and aging cavity; and the pipeline behind the discharging valve is provided with a material circulating pump. Slurry obtained by uniformly mixing raw materials CL-20 and grinding solvent liquid is conveyed into the smooth treatment device and is circularly treated between the smooth grinding cavity and the agitating and aging cavity; and the CL-20 slurry which is sufficiently grinded and aged is discharged and then is subjected to vacuum filtering and drying to finally obtain CL-20 products with smooth grains. The device provided by the utility model is simple to operate, high in safety and high in production efficiency and can be used for realizing effective smooth treatment on the CL-20 grains with high mechanical sensitivity.
Description
Technical field
The utility model relates to the technology that a kind of energetic material particle carries out round and smooth processing, says further, relates to a kind of device that CL-20 particle is carried out to round and smooth processing.
Background technology
Along with the fierceness day by day of scientific and technical development and weapon antagonism, in the ascendant to the round and smooth treatment technology of energetic material both at home and abroad.Because energetic material particle is carried out to pattern or structural round and smooth processing, not only can effectively improve free-running property and the loading density of energetic material, also can effectively reduce its mechanical sensitivity and shock sensitivity.Therefore, the tiny blasting explosive granules after round and smooth processing will play important effect in actual applications.
CL-20(hexanitro azepine different 5 is alkane hereby) be a kind of organic energy-rich compound, density ratio HMX (HMX) is high by 8%, and explosion velocity is high by 6%, and energy density is high more than 15%, in following weaponry, has good application prospect.The highest and the highest simple substance ammonal of explosion velocity as current energy density, this energetic material of CL-20 carries out after thinning processing in conventional method, on microcosmic, have a large amount of tiny corner angle, this causes its sensitivity to be further improved, and has a strong impact on it in the Secure Application of various military fields.Therefore, in refinement CL-20 particle, must carry out round and smooth processing, to ensure its safe handling property.CL-20 blasting explosive granules through round and smooth processing, except retaining the excellent properties of common CL-20 high-energy-density, also there is shock sensitivity and impact sensitivity is lower, safer characteristic, this to widening the range of application of CL-20, to improve the performance of armament systems significant.
Conventionally utilizing surface tension of liquid, make material melting (or partial melting) then cooling, is the conventional method that obtains round and smooth particle.But this method does not have reference function to having inflammable and explosive energetic material.
Also have the ultrasonic wave of employing mode graphite granule to be carried out to the report of round and smooth processing, but there is the shortcoming that energy consumption is high, yield poorly in this mode.Main is, this method is difficult to be applicable to the energetic material of high sensitivity, due to high-intensity ultrasonic energy penetration, be easy to make the tiny flaw of crystal grain inside extended, make the inner cavity/hole that forms of crystal grain, when reality is used, bring potential danger to energetic material particle.
Supercritical fluid technique is a kind of technology that can be applicable to preferably Machining energetic materials, yet this method exists the feature that output is little, cost is high (production cost and equipment cost are all very high), is unfavorable for industrialization and practical application.
For now, blasting explosive granules is carried out to round and smooth processing and conventionally adopt the recrystallization mode of (comprising nip method), but recrystallization need to expend a large amount of organic solvents or strong acid, this has not only improved cost, and is unfavorable for workman's health and environmental protection.Main, the blasting explosive granules thing that recrystallization method obtains is the relatively regular particle of crystal formation, still has the corner angle of crystal grain in positions such as its edges of microcosmic, and what obtain is not real round and smooth particle.
Therefore, by simple method, realize the safe and effective refinement of explosive and round and smooth processing, there is urgent technical need and application prospect widely.
Utility model content:
Because lacking, prior art effectively CL-20 particle is carried out the apparatus and method for of round and smooth processing, be difficult to realize the problems such as round and smooth processing of CL-20 particle, the utility model stirs the method for mill and dissolution with solvents effectively for the problems of the prior art in conjunction with wet method, a kind of round and smooth treating apparatus is provided, can realize quick, the safe round and smooth processing of CL-20 particle, obtain sphericity very high, at least can reach more than 0.9 CL-20.
The purpose of this utility model is to provide the device of the round and smooth processing of a kind of CL-20 particle.
The round and smooth treating apparatus of a kind of CL-20 particle of the present utility model, comprises round and smooth milling apparatus and stirs maturing equipment.Because CL-20 belongs to the energetic material of high mechanical sensitivity, mechanical shock and clashing into is easily caused danger.Therefore,, aspect equipment design and selection, treating apparatus of the present utility model adopts take friction force as main round and smooth milling apparatus and stirs maturing equipment, to increase the security in the round and smooth processing procedure of CL-20 particle.
Described round and smooth milling apparatus comprises with the grinding chamber, grinding chamber upper cover, the round and smooth mill ball that stir; Grinding chamber is the uncovered cavity structure in top, and grinding chamber upper cover is anchored on grinding chamber top, and to cover its top uncovered and sealing is set, and grinding chamber top is provided with discharging opening, and its bottom is provided with charging aperture, and round and smooth mill ball is placed in grinding chamber;
Described stirring maturing equipment comprises with the ageing chamber, ageing chamber upper cover, the ageing mill ball that stir; Ageing chamber is the uncovered cavity structure in top, and grinding chamber upper cover is anchored on grinding chamber top, and to cover its top uncovered and sealing is set, and top, ageing chamber is provided with charging aperture, and bottom, ageing chamber is provided with discharging opening, and ageing mill ball is placed in ageing chamber;
The discharging opening of grinding chamber top is connected by pipeline with the charging aperture of top, ageing chamber; The discharging opening of bottom, ageing chamber is connected by pipeline with the charging aperture of grinding chamber bottom, and the position near ageing chamber on this pipeline is provided with outlet valve, is provided with Matter Transfer pump on its rear line.
Consider the hazard property of CL-20, in order to reduce to greatest extent hazards, the utility model adopts wet grinding, adopting abrasive solvents liquid is abrasive media, raw material CL-20 and abrasive solvents are fully mixed to get to the CL-20 slurry mixing, again CL-20 slurry is input in round and smooth treating apparatus of the present utility model, makes slurries carry out circular treatment between grinding chamber and ageing chamber; In round and smooth grinding and stirring ageing process, because fricative heat and energy can be transmitted and be consumed by liquid medium, thereby realize, keep the safety in production.Simultaneously, in order to reach better round and smooth effect, the holdup time of the slurry of increase CL-20 and abrasive solvents configuration in device, by pipeline, with Matter Transfer pump, round and smooth milling apparatus is connected with stirring maturing equipment, slurry is circulated within a certain period of time between grinding chamber and ageing chamber, make blasting explosive granules continue, in collision and extrusion process, the corner angle of blasting explosive granules to be eliminated with mill ball, and utilize solvent that blasting explosive granules edge is dissolved, realize circular grinding and the ageing of material.
Mill ball of the present utility model comprises round and smooth mill ball and ageing mill ball, and its material needs corrosion-resistant, wear-resisting, and density should not be too large.So described round and smooth mill ball is plastic material, described ageing mill ball is quality of rubber materials; The hardness of round and smooth mill ball is greater than ageing mill ball hardness.The plastic material density of described round and smooth mill ball is preferably at 2.0～2.3g/cm
3, Shao Shi D hardness is preferably 50～65HD; The quality of rubber materials density of ageing mill ball is preferably at 1.2～1.5g/cm
3, Shore A hardness is preferably 65～80HA.
More specifically:
Described round and smooth grinding chamber upper cover is fixed in grinding chamber top by spring clamp.Described round and smooth milling apparatus grinding chamber upper cover between grinding chamber upper cover and grinding chamber uncovered is fixed in grinding chamber top by spring clamp; Between grinding chamber upper cover and grinding chamber uncovered, being provided with rubber ring seals.Sealing can adopt various hermetically-sealed construction of the prior art, is preferably provided with rubber ring and seals.
The stirring of described round and smooth milling apparatus grinding chamber comprises agitator, shaft and motor; Described grinding chamber agitator is positioned among grinding chamber, coaxial with grinding chamber, and the bottom in agitator bottom and grinding chamber is left ，Gai gap, gap and is preferably 5～10mm; Shaft connects agitator and motor through the centre bore of grinding chamber upper cover.Agitator can adopt various agitators in prior art, in order to increase shearing force, is more preferably provided with the radially agitator of stirring rod of multilayer, many.
In order to reduce the heat producing because of mechanism in round and smooth process of lapping, avoid the impact of excess Temperature on material, the skin of described round and smooth milling apparatus grinding chamber is provided with cooling water jecket, is provided with cooling water inlet and outlet on chuck.
Described stirring maturing equipment ageing chamber upper cover is fixed in top, ageing chamber by spring clamp; Between ageing chamber upper cover and grinding chamber uncovered, being provided with rubber ring seals; Sealing can adopt various hermetically-sealed construction of the prior art, is preferably provided with rubber ring and seals.
The stirring in described stirring maturing equipment ageing chamber comprises agitator, shaft and motor; Described ageing chamber agitator is positioned among ageing chamber, coaxial with ageing chamber, and the bottom in agitator bottom and ageing chamber is left ，Gai gap, gap and is preferably 5～10mm; Shaft connects agitator and motor through the centre bore of ageing chamber upper cover.Agitator can adopt various agitators in prior art, in order to increase shearing force, is more preferably provided with the radially agitator of stirring rod of multilayer, many.
Because CL-20 can discharge number acid when grinding, and in abrasive solvents, contain a certain proportion of organic solvent, therefore, grind the material of cavity and ageing cavity except having very strong rigidity and wear-resisting effect, also must bear stronger acid corrosion-resistant ability, can not bring extra pollution impurity to product.In addition, device and material contact portion (except round and smooth mill ball and ageing mill ball) are such as round and smooth grinding chamber material and stir ageing chamber material or the outer lining of its cavity liner, shaft and circulating pump etc. all should adopt anticorrosive, preferably adopt the stainless steel material of wear resistant corrosion resistant.
Polytetrafluoroethylene (PTFE) and fluorosioloxane rubber are wear-resisting, corrosion-resistant, engineering properties is softer, and density is proper, are well suited for the material as mill ball in the utility model equipment.The mill ball density stirring in ageing chamber should be less, and material is relatively softer, so round and smooth mill ball material polytetrafluoroethylene (PTFE) more preferably, its density is preferably 2.1～2.2g/cm
3, Shao Shi D hardness is preferably 55～60HD; Ageing mill ball material is fluorosioloxane rubber more preferably, and its density is preferably 1.3～1.4g/cm
3, Shore A hardness is preferably 70～75HA.
The sphericity of mill ball (comprising round and smooth mill ball and ageing mill ball) is larger, and mill ball is more near the mark spherical, when equipment grinds security higher, the granularity of the products C L-20 particle obtaining is more even, size distribution is more concentrated, sphericity is higher; The density of mill ball also has a significant impact granularity and the sphericity of products C L-20 particle, and low-density mill ball can make the granularity of products C L-20 particle more even, and size distribution is more concentrated, and sphericity is higher; Mill ball diameter is less, and under similarity condition, more effective to the refining effect of material, the granularity of the products C L-20 obtaining is less.In order to improve the security of process of lapping, make the granularity of products C L-20 particle more even, size distribution is more concentrated, and sphericity is higher rounder and more smooth, and described mill ball sphericity is preferably more than 0.99; Its diameter range can require to determine according to CL-20 product granularity, is preferably 3～10mm.
In described round and smooth grinding chamber, the filling rate of round and smooth mill ball is 40～90%, is preferably 65～80%; In described stirring ageing chamber, the filling rate of ageing mill ball is 40～90%, is preferably 50～65%.
In the above discharge valve and pipeline, the conventional valve of using is all preferably ball valve; Motor used is all preferably fire-proof motor.
The round and smooth treatment facility of CL-20 particle described in the utility model, comprise that round and smooth ball-grinding machine, stirring maturing equipment and Matter Transfer pump are by power line and holding wire, all can be connected with remote controllers, remote controllers comprise digital display screen, variable-frequency governor, timer, motor switch, realize the Long-distance Control to device running operation.The safety that completes the automation of production and ensure to greatest extent operating personnel.
Use the method that the round and smooth treating apparatus of CL-20 particle of the present utility model is processed CL-20 particle to comprise: first to get described round and smooth mill ball and ageing mill ball and join respectively round and smooth milling apparatus grinding chamber and stir in maturing equipment ageing chamber, the distilled water solution of preparation acetone, as abrasive solvents, is fully mixed to get by raw material CL-20 and abrasive solvents liquid the CL-20 slurry mixing afterwards; CL-20 slurry is input in described round and smooth milling apparatus grinding chamber and grinds again, then be input to ageing in the ageing chamber of stirring maturing equipment by grinding chamber, and between carries out circular treatment; In grinding chamber, material particles is mainly subject to grinding and the shearing of round and smooth mill ball, CL-20 slurry flows to the ageing chamber of stirring maturing equipment by the grinding chamber of round and smooth treatment facility under the effect of Matter Transfer pump afterwards, under the effect of abrasive solvents, realize the ageing of material, described ageing refers to that material particles is under the effect of solvent, remove and dissolve the angular edge of material particles, and crystallization, in larger particle surfaces, promotes the process of round and smoothization of particle again.Then under the effect of circulating pump, by stirring ageing chamber, flow to round and smooth grinding chamber, go round and begin again.Afterwards after the CL-20 slurry of abundant grinding and ageing is discharged through vacuum filtration, dry, finally obtain the round and smooth CL-20 of particle.
Particularly, preparation method of the present utility model comprises the following steps:
(1) taking diameter is that the mill ball of 3～10mm joins respectively round and smooth grinding chamber and stirs in ageing chamber; Grinding chamber or ageing chamber filling rate (filling rate that refers to mill ball filled chamber volume) all has a great impact the particle mean size of products C L-20, size distribution and sphericity, filling rate hour, between mill ball, easily form interstice coverage, slurry easily " short circuit " is escaped from, thereby grinding and ageing weak effect; When filling rate is higher, grinding and ageing effect are better, but difficulty is stirred in slurry flow resistance increase in chamber.For the round and smooth processing of CL-20, most economical suitable cavity filling rate 40～90%, the filling rate of round and smooth grinding chamber is preferably 65～80%; The filling rate that stirs ageing chamber is preferably 50～65%.
(2) consider the security of round and smooth processing procedure, reduce the needs that hazards and CL-20 grain corner dissolve to greatest extent, in the utility model method, abrasive solvents liquid should contain the organic solvent of solubilized CL-20.Therefore, the general distilled water of the difficult a small amount of organic solvent of interpolation firing that adopts is as abrasive solvents liquid.Due to the needs of ageing, the concentration of organic solvent is unsuitable excessive.The organic solvent of low concentration, can make the corner angle of CL-20 and part be polished the tiny corner angle that get off dissolved and again crystallization in larger particle surfaces, promote round and smoothization of particle.In the distilled water solution of the organic solvent therefore configuring, the concentration expressed in percentage by weight of organic solvent is 2～6%, is preferably 4～5%.
Described organic solvent can dissolve certain CL-20, and solvent can have certain solubility in water; Preferably the solubility of CL-20 is more than or equal to 5%, and the solubility in water is more than or equal to 5% organic solvent; At least one of low molecule ketone, low molecule ester class more preferably wherein; At least one in acetone, butanone, ethyl acetate most preferably.
(3) taking raw material CL-20 fully mixes and makes it to form the slurry mixing with above-mentioned abrasive solvents; CL-20 slurry concentration also has a great impact the particle mean size of products C L-20, size distribution and sphericity.Slurry concentration is too low, and between mill ball medium, polished solid particle is few, and the probability that mill ball contacts with material is low, and it grinds and ageing weak effect; When slurry concentration is too high, slurry viscosity increases, and material is difficult for disperseing, and it grinds and ageing effect also variation on the contrary; The concentration of CL-20 slurry generally can be at 20～50%wt, and preferably within the scope of 35～40%wt, round and smooth effect is best.
(4) above gained CL-20 slurry is input to described round and smooth milling apparatus and inputs and stir in maturing equipment more afterwards, and the round and smooth processing that circulates between grinding chamber and ageing chamber, the round and smooth milled processed that circulates and stirring ripening;
In the time of circular grinding processing and ripening and grinding chamber and ageing chamber, the rotating speed of agitator is depending on the round and smooth effect of product, and the general round and smooth processing time is 1～2h; In round and smooth treatment facility grinding chamber, agitator speed is 5～30r/min, preferably 15～20r/min; Stirring agitator speed in maturing equipment ageing chamber is 5～30r/min, preferably 8～15r/min;
The round and smooth processing of so-called circulation, refer in round and smooth milling apparatus grinding chamber, material particles is subject to grinding and the shear action of mill ball, material particles corner angle are constantly squeezed and collide, thereby removal corner angle, then CL-20 slurry flows out in by grinding chamber and flows to and stirs maturing equipment ageing chamber under the effect of circulating pump; In ageing chamber, material particles is under the acting in conjunction of simple collision and solvent, and the angular edge of removing and dissolving material particles, realizes the ageing of material; Then under circulating pump effect, slurry flows to grinding chamber by ageing chamber again, goes round and begins again, and finally realizes the round and smooth processing of material particles;
Further say, the method mainly effectively combines the method for wet method mechanical lapping and dissolution with solvents.In grinding chamber, particle with mill ball collision and extrusion process in, the corner angle of particle are eliminated; In ageing chamber, utilize solvent that particle edge and tiny corner angle are dissolved, then crystallization, in larger particle surfaces, promotes round and smoothization of particle, thereby obtains the CL-20 particle that round and smooth treatment effect is fine, sphericity is very high again;
Because its course of work is wet grinding, process of lapping carries out in grinding liquid medium, makes the heat producing in friction process transmit fast and consume, and has prevented process of lapping heating, has guaranteed process of lapping safety; Described EGR adopts common liquid circulating apparatus in prior art, for example, connect the pipeline of blender and grinding chamber and the product pump on pipeline.
(5) above-mentioned circulation is round and smooth be disposed after, open discharge valve, emit the CL-20 slurry that in ageing chamber, ageing is good and carry out vacuum filtration, dry, obtain the CL-20 product of the dry round and smooth processing of particle.Through the approximate spheroid of products C L-20 pattern of the round and smooth processing of the utility model, without obvious corner angle, sphericity improves greatly, has reached more than 0.9.
Above vacuum filtration can adopt various vacuum filtration equipment of the prior art to carry out, and preferred cycle ability of swimming vavuum pump carries out suction filtration and is filtered dry.Above oven dry can adopt various drying plants in prior art to carry out, and preferably baking oven adopts water-bath baking oven to dry.
Above slip processing method, can pass through computer equipment remote control operation all processes, to realize automated production.
In addition, for the sake of security, while adopting above method to carry out round and smooth processing to CL-20 particle, in control room, by Explosionproof camera, carry out the omnidistance working order that monitors round and smooth treatment facility in real time.
Round and smooth treating apparatus of the present utility model is used for CL-20 particle to carry out round and smooth processing, and its output is generally at 3～5 kilograms/batch, every batch of used time 1～2h, and this output and efficiency are far above other device of routine.Device of the present utility model is implemented effective round and smooth processing to CL-20 particle, and does not have the pollution of organic solvent and the toxic and side effect that may exist.Equipment of the present utility model can be realized Long-distance Control and adjusting, has thoroughly avoided the potential threat that in preparation process, hazards are brought operating personnel.
Accompanying drawing explanation
Fig. 1 is round and smooth treating apparatus schematic diagram of the present utility model;
Fig. 2 is round and smooth treating apparatus concrete structure schematic diagram of the present utility model;
Fig. 3 is remote controllers schematic diagram;
Fig. 4 is the electron scanning micrograph of the CL-20 of raw material;
Fig. 5 is the CL-20 grain size analysis figure of raw material;
Fig. 6 is the electron scanning micrograph of CL-20 product of the round and smooth processing of particle of embodiment 1 gained;
Fig. 7 is the grain size analysis figure of CL-20 product of the round and smooth processing of particle of embodiment 1 gained;
Fig. 8 is the electron scanning micrograph of CL-20 product of the round and smooth processing of particle of embodiment 2 gained;
Fig. 9 is the grain size analysis figure of CL-20 product of the round and smooth processing of particle of embodiment 2 gained;
Figure 10 is the electron scanning micrograph of CL-20 product of the round and smooth processing of particle of embodiment 3 gained;
Figure 11 is the grain size analysis figure of CL-20 product of the round and smooth processing of particle of embodiment 3 gained;
In Fig. 1: 1-round and smooth milling apparatus; 2-stirring maturing equipment; 3-remote controllers; 4-Matter Transfer pump; 5-outlet valve.
In Fig. 2: 1-1-grinding chamber stirring motor; 1-2-grinding chamber shaft; 1-3-grinding chamber upper cover; 1-4-grinding chamber charging aperture; 1-5-grinding chamber discharging opening; 1-6-round and smooth mill ball; 1-7-grinding chamber; 1-8-cooling water inlet; 1-9-coolant outlet; 2-1-ageing chamber stirring motor; 2-2-ageing chamber shaft; 2-3-ageing chamber upper cover; 2-4-ageing chamber charging aperture; 2-5-ageing chamber discharging opening; 2-6-ageing mill ball; 2-7-ageing chamber.
In Fig. 3: 3-1-digital display screen; 3-2-variable-frequency governor; 3-3-timer; 3-4-motor switch.
The specific embodiment:
Below in conjunction with example, further illustrate the utility model.
raw material:
Hexanitro azepine different 5 is alkane: CL-20 hereby, the extraordinary Chemical Co., Ltd. in Qingyang, Liaoning.
The stereoscan photograph of Fig. 4 for adopting SEM that raw material CL-20 is taken a picture and obtained; The crystalline form of the CL-20 of raw material shown in it is spindle, and there are sharp-pointed corner angle at two ends.
The grain size analysis figure of Fig. 5 for adopting laser particle analyzer to obtain the granularity analysis of raw material CL-20; The average grain diameter of the CL-20 of raw material shown in it is in 15 μ m left and right.
method of testing:
Grain size analysis: adopt MASTER200 type laser particle analyzer (Britain Ma Erwen Instrument Ltd.) to carry out grain size analysis to the granularity of the round and smooth CL-20 product of the granularity of raw material CL-20 and embodiment gained, obtain grain size analysis figure.In grain size analysis figure, abscissa is particle diameter, the μ m of unit; The left longitudinal axis is volume fraction, and unit is %; The right longitudinal axis is cumulative volume mark, and unit is %.Curve 1 is size distribution curve, take left vertical as the longitudinal axis; Curve 2 is cumulative grain-size distribution curves, take the right longitudinal axis as the longitudinal axis.
The microscopic appearance of raw material CL-20 and round and smooth CL-20 product: adopt S-4700 type SEM (HIT) to take a picture to the microscopic appearance of the round and smooth CL-20 product of the microscopic appearance of raw material CL-20 and embodiment gained, obtain stereoscan photograph.
The round and smooth treating apparatus of CL-20 particle of the present utility model is specific as follows:
As shown in Figure 1, the round and smooth treating apparatus of CL-20 particle of the present utility model, comprises round and smooth milling apparatus 1, stirs maturing equipment 2; Matter Transfer pump 4 and outlet valve 5 on round and smooth milling apparatus 1 and stirring maturing equipment 2 connecting lines.Comprise in addition remote controllers 3, be connected with Matter Transfer pump 4 with round and smooth milling apparatus 1, stirring maturing equipment 2 respectively.
As shown in Figure 2, round and smooth milling apparatus 1 comprises with grinding chamber 1-7, the grinding chamber upper cover 1-3, the round and smooth mill ball 1-6 that stir; Grinding chamber 1-7 is the uncovered cavity structure in top, grinding chamber upper cover 1-3 utilize spring clamp to be fixed in grinding chamber 1-7 top to cover its top uncovered, between grinding chamber upper cover 1-3 and grinding chamber 1-7 are uncovered, rubber ring is set and seals; Grinding chamber 1-7 top is provided with grinding chamber discharging opening 1-5, and grinding chamber 1-7 bottom is provided with grinding chamber charging aperture 1-4, and mill ball 1-6 is placed in grinding chamber 1-7.The stirring of grinding chamber 1-7 comprises agitator, grinding chamber shaft 1-2 and grinding chamber stirring motor 1-1; Agitator is positioned among grinding chamber 1-7, coaxial with grinding chamber, and 0.7mm gap is left in the bottom in agitator bottom and grinding chamber 1-7; On agitator, be provided with radially stirring rod of multilayer, many.Grinding chamber shaft 1-2 connects agitator and grinding chamber stirring motor 1-1 through the centre bore of grinding chamber upper cover 1-3; The skin of described grinding chamber 1-7 is provided with cooling water jecket, is provided with cooling water inlet 1-8 and coolant outlet 1-9 on chuck.
Stirring maturing equipment comprises with ageing chamber 2-7, the ageing chamber upper cover 2-3, the ageing mill ball 2-6 that stir; Ageing chamber 2-7 is the uncovered cavity structure in top, ageing chamber upper cover 2-3 utilize spring clamp to be fixed in ageing chamber 2-7 top to cover its top uncovered, between ageing chamber upper cover 2-3 and ageing chamber 2-7 are uncovered, rubber ring is set and seals; 2-7 top in ageing chamber is provided with ageing chamber charging aperture 2-4, and 2-7 bottom in ageing chamber is provided with ageing chamber discharging opening 2-5, and mill ball 2-6 is placed in the 2-7 of ageing chamber.The stirring of ageing chamber 2-7 comprises agitator, ageing chamber shaft 2-2 and ageing chamber stirring motor 2-1; Agitator is positioned among the 2-7 of ageing chamber, coaxial with ageing chamber, and 0.7mm gap is left in the bottom in agitator bottom and ageing chamber 2-7; On agitator, be provided with radially stirring rod of multilayer, many.Ageing chamber shaft 2-2 connects agitator and ageing chamber stirring motor 2-1 through the centre bore of ageing chamber upper cover 2-3.
Grinding chamber discharging opening 1-5 is connected with ageing chamber charging aperture 2-4 pipeline.Ageing chamber discharging opening 2-5 is connected by pipeline with grinding chamber charging aperture 1-4, and the position near ageing chamber discharging opening 2-5 on this pipeline is provided with outlet valve 5, is provided with Matter Transfer pump 4 on its rear line.
The stainless steel of described grinding chamber and ageing chamber material selection wear resistant corrosion resistant; Described round and smooth grinding chamber mill ball material selection density is 2.1～2.2g/cm
3, Shao Shi D hardness 55～60HD polytetrafluoroethylene (PTFE); Described stirring ageing chamber mill ball material selection density is 1.3～1.4g/cm
3, the Shore A hardness fluorosioloxane rubber that is 70～75HA.The particle size range of round and smooth mill ball and ageing mill ball is all at 3～10mm, and sphericity is 0.99.
Described discharge valve 5 is ball valve; Motor used is fire-proof motor; In device, except mill ball, be stainless steel with material contact portion.
Remote controllers 3 comprise digital display screen 3-1, variable-frequency governor 3-2, timer 3-3, motor switch 3-4 as shown in Figure 3, realize the Long-distance Control to device running operation.
When the round and smooth treating apparatus with the utility model CL-20 particle carries out round and smooth processing to CL-20 particle, first getting round and smooth mill ball and ageing mill ball joins respectively round and smooth treatment facility grinding chamber and stirs in maturing equipment ageing chamber, the distilled water solution of preparation acetone, as abrasive solvents, is fully mixed to get by raw material CL-20 and abrasive solvents the CL-20 slurry mixing afterwards; Again CL-20 slurry is input to the round and smooth processing that circulates in above-mentioned round and smooth treating apparatus between grinding chamber and ageing chamber, after the CL-20 slurry of abundant grinding and ageing is discharged, through vacuum filtration, dry, finally obtains the round and smooth CL-20 product of granularity.
Its principle is exactly in conjunction with wet method mechanical lapping and dissolution with solvents, first CL-20 particle with mill ball collision and extrusion process in, the corner angle of particle are eliminated; Secondly particle edge and tiny corner angle are by dissolution with solvents, and then crystallization, in larger particle surfaces, promotes round and smoothization of particle, thereby obtains the CL-20 particle that sphericity is very high again.In grinding chamber, material particles is mainly subject to the mechanism that mill ball grinds and shears, and material particles corner angle are constantly squeezed and collide, thereby removes corner angle, realizes the round and smooth grinding of material; Then CL-20 slurry flows out in by grinding chamber and flows to ageing chamber under the effect of circulating pump; In ageing chamber, material particles is mainly subject to the dissolution of solvent, and under the acting in conjunction of simple collision and solvent, the angular edge of removing and dissolving material particles, realizes the ageing of material; Then under the effect of circulating pump by flow direction of material grinding chamber out in ageing chamber, go round and begin again, finally realize the round and smooth processing of material particles.Because its course of work is wet grinding, grinding and ageing process all carry out in abrasive solvents, make the heat producing in friction process transmit fast and consume, and have prevented grinding and ageing process heating, have guaranteed the safety of round and smooth processing procedure.
The specific embodiment of the round and smooth processing of CL-20 particle of the present utility model is as follows:
raw material:
Polytetrafluoroethylene (PTFE) mill ball: density: 2.1g/cm
3; Shao Shi D hardness: 55HD; Manufacturer: Nanjing Ai Fusi chemical products Co., Ltd.
Fluorosioloxane rubber mill ball: density: 1.4g/cm
3; Shore A hardness: 70HA; Manufacturer: Chengdu Sen Fa rubber and plastic Co., Ltd.
Acetone: commercially available
1, the round and smooth mill ball that takes 2kg polytetrafluoroethylene (PTFE) joins in round and smooth milling apparatus grinding chamber, and mill ball diameter is 4mm, and grinding chamber mill ball filling rate is 75%; The ageing mill ball that takes 1.2kg fluorosioloxane rubber joins and stirs in maturing equipment ageing chamber, and ageing mill ball diameter is 3mm, and filling rate is 55%.
2, the distilled water solution of preparation acetone is as abrasive solvents liquid, and the concentration expressed in percentage by weight of acetone is 4%.
3, take 4kg raw material CL-20, measure 9.3Kg abrasive solvents liquid, raw material CL-20 is fully mixed and makes it to form the slurry mixing with abrasive solvents, the concentration of CL-20 slurry is 30%wt.
4, the CL-20 slurry mixing be input to round and smooth treatment facility grinding chamber and stir the round and smooth processing that circulates in maturing equipment ageing chamber, in round and smooth grinding chamber, agitator speed is 20r/min; Stirring agitator speed in ageing chamber is 15r/min; The round and smooth processing time of whole circulation is 1.5h.
5, open outlet valve, the CL-20 slurry of emitting round and smooth processing in ageing chamber carries out vacuum filtration; Then put at 40 ℃, water-bath baking oven and dry, obtain the CL-20 powder that dry sphericity is high.Collect the products C L-20 of the round and smooth processing of gained, and with SEM and laser particle size analyzer, its pattern and size distribution are characterized.As shown in Figure 6, the pattern of product is similar to spheroid to the SEM of product, and without obvious corner angle, sphericity improves greatly, has reached more than 0.9; As shown in Figure 7, CL-20 removes corner angle to the results of grain size analysis of product in process of lapping and ageing process, and the average particle size of products obtained therefrom is less than the average particle size of raw material, is 10.1 μ m.
Whole preparation process, passes through the Explosionproof camera omnidistance working order that monitors round and smooth treatment facility in real time in control room.The input and output material in simultaneous grinding chamber and ageing chamber, the flow velocity of the mixing speed of grinding chamber and ageing and logistics pump etc. is all controlled automatically and is carried out by remote computer.
1, the round and smooth mill ball that takes 1.75kg polytetrafluoroethylene (PTFE) joins in round and smooth milling apparatus grinding chamber, and mill ball diameter is 4mm, and grinding chamber filling rate is 65%; The ageing mill ball that takes 1.1kg fluorosioloxane rubber joins and stirs in maturing equipment ageing chamber, and ageing mill ball diameter is 3mm, and filling rate is 50%.
2, the distilled water solution of preparation acetone is as abrasive solvents liquid, and the concentration expressed in percentage by weight of acetone is 4%.
3, take 4kg raw material CL-20, measure 9.3Kg abrasive solvents liquid, raw material CL-20 is fully mixed and makes it to form the slurry mixing with abrasive solvents, the concentration of CL-20 slurry is 30%wt.
4, the CL-20 slurry mixing be input to round and smooth treatment facility grinding chamber and stir the round and smooth processing that circulates in maturing equipment ageing chamber, in round and smooth grinding chamber, agitator speed is 18r/min; Stirring agitator speed in ageing chamber is 10r/min; The round and smooth processing time of whole circulation is 1.5h.
5, open outlet valve, the CL-20 slurry of emitting round and smooth processing in ageing chamber carries out vacuum filtration; Then put at 40 ℃, water-bath baking oven and dry, obtain the CL-20 powder that dry sphericity is high.Collect the products C L-20 of the round and smooth processing of gained, and with SEM and laser particle size analyzer, its pattern and size distribution are characterized.As shown in Figure 8, the pattern of product is similar to spheroid to the SEM of product, and without obvious corner angle, sphericity improves greatly, has reached more than 0.9; As shown in Figure 9, CL-20 removes corner angle to the results of grain size analysis of product in process of lapping and ageing process, and the average particle size of products obtained therefrom is less than the average particle size of raw material, is 13.3 μ m.
Embodiment 3
1, the round and smooth mill ball that takes 2.13kg polytetrafluoroethylene (PTFE) joins in round and smooth milling apparatus grinding chamber, and mill ball diameter is 4mm, and grinding chamber filling rate is 80%; The ageing mill ball that takes 1.31kg fluorosioloxane rubber joins and stirs in maturing equipment ageing chamber, and ageing mill ball diameter is 3mm, and filling rate is 65%.
2, the distilled water solution of preparation acetone is as abrasive solvents, and the concentration expressed in percentage by weight of acetone is 3%.
3, take 4kg raw material CL-20, measure 12Kg abrasive solvents, raw material CL-20 is fully mixed and makes it to form the slurry mixing with abrasive solvents, the concentration of CL-20 slurry is 25%wt.
4, the CL-20 slurry mixing be input to round and smooth treatment facility grinding chamber and stir the round and smooth processing that circulates in maturing equipment ageing chamber, in round and smooth grinding chamber, agitator speed is 15r/min; Stirring agitator speed in ageing chamber is 8r/min; The round and smooth processing time of whole circulation is 1.5h.
5, open outlet valve, the CL-20 slurry of emitting round and smooth processing in ageing chamber carries out vacuum filtration; Then put at 40 ℃, water-bath baking oven and dry, obtain the CL-20 powder that dry sphericity is high.Collect the products C L-20 of the round and smooth processing of gained, and with SEM and laser particle size analyzer, its pattern and size distribution are characterized.As shown in figure 10, the pattern of product is similar to spheroid to the SEM of product, and without obvious corner angle, sphericity improves greatly, has reached more than 0.9; As shown in figure 11, CL-20 removes corner angle to the results of grain size analysis of product in process of lapping and ageing process, and the average particle size of products obtained therefrom is less than the average particle size of raw material, is 7.5 μ m.
Claims (11)
1. a round and smooth treating apparatus for CL-20 particle, comprises round and smooth milling apparatus and stirs maturing equipment, it is characterized in that:
Described round and smooth milling apparatus comprises with the grinding chamber, grinding chamber upper cover, the round and smooth mill ball that stir; Grinding chamber is the uncovered cavity structure in top, and grinding chamber upper cover is anchored on grinding chamber top, and to cover its top uncovered and sealing is set, and grinding chamber top is provided with discharging opening, and its bottom is provided with charging aperture, and round and smooth mill ball is placed in grinding chamber;
Described stirring maturing equipment comprises with the ageing chamber, ageing chamber upper cover, the ageing mill ball that stir; Ageing chamber is the uncovered cavity structure in top, and grinding chamber upper cover is anchored on grinding chamber top, and to cover its top uncovered and sealing is set, and top, ageing chamber is provided with charging aperture, and bottom, ageing chamber is provided with discharging opening, and ageing mill ball is placed in ageing chamber;
The discharging opening of grinding chamber top is connected by pipeline with the charging aperture of top, ageing chamber; The discharging opening of bottom, ageing chamber is connected by pipeline with the charging aperture of grinding chamber bottom, and the position near ageing chamber on this pipeline is provided with outlet valve, is provided with Matter Transfer pump on its rear line.
2. treating apparatus according to claim 1, is characterized in that:
Described round and smooth mill ball is plastic material, and described ageing mill ball is quality of rubber materials; The hardness of round and smooth mill ball is greater than ageing mill ball hardness;
The plastic material density of described round and smooth mill ball is preferably at 2.0～2.3g/cm
3, Shao Shi D hardness is preferably at 50～65HD; The quality of rubber materials density of ageing mill ball is preferably at 1.2～1.5g/cm
3, Shore A hardness is preferably 65～80HA.
3. treating apparatus according to claim 1, is characterized in that:
The stirring of described round and smooth milling apparatus grinding chamber comprises agitator, shaft and motor; Described grinding chamber agitator is positioned among grinding chamber, coaxial with grinding chamber, and gap is left in the bottom in agitator bottom and grinding chamber; Shaft connects agitator and motor through the centre bore of grinding chamber upper cover;
The stirring in described stirring maturing equipment ageing chamber comprises agitator, shaft and motor; Described ageing chamber agitator is positioned among ageing chamber, coaxial with ageing chamber, and gap is left in the bottom in agitator bottom and ageing chamber; Shaft connects agitator and motor through the centre bore of ageing chamber upper cover.
4. treating apparatus according to claim 1, is characterized in that:
Described round and smooth milling apparatus grinding chamber upper cover is fixed in grinding chamber top by spring clamp; Between grinding chamber upper cover and grinding chamber uncovered, being provided with rubber ring seals;
Described stirring maturing equipment ageing chamber upper cover is fixed in top, ageing chamber by spring clamp; Between ageing chamber upper cover and grinding chamber uncovered, being provided with rubber ring seals.
5. treating apparatus according to claim 1, is characterized in that:
Described round and smooth mill ball material selection polytetrafluoroethylene (PTFE); Described ageing mill ball material selection fluorosioloxane rubber;
The round and smooth mill ball of described polytetrafluoroethylene (PTFE), its density is preferably 2.1～2.2g/cm
3, Shao Shi D hardness is 55～60HD preferably; Described fluorosioloxane rubber ageing mill ball, its density is preferably 1.3～1.4g/cm
3, Shore A hardness is preferably 70～75HA.
6. treating apparatus according to claim 1, is characterized in that:
In described round and smooth grinding chamber, the filling rate of round and smooth mill ball is 40～90%; In described stirring ageing chamber, the filling rate of ageing mill ball is 40～90%.
7. treating apparatus according to claim 6, is characterized in that:
In described round and smooth grinding chamber, the filling rate of round and smooth mill ball is 65～80%; In described stirring ageing chamber, the filling rate of ageing mill ball is 50～65%.
8. treating apparatus according to claim 1, is characterized in that:
The stirring of described round and smooth milling apparatus grinding chamber comprises agitator, shaft and motor; Described grinding chamber agitator is positioned among grinding chamber, coaxial with grinding chamber, and 5～10mm gap is left in the bottom in agitator bottom and grinding chamber; Shaft connects agitator and motor through the centre bore of grinding chamber upper cover; The skin of described grinding chamber is provided with cooling water jecket, is provided with cooling water inlet and outlet on chuck; Described grinding chamber upper cover is fixed in grinding chamber top by spring clamp, and the uncovered rubber ring that is directly provided with of grinding chamber upper cover and grinding chamber seals;
The stirring in described stirring maturing equipment ageing chamber comprises agitator, shaft and motor; Described ageing chamber agitator is positioned among ageing chamber, coaxial with ageing chamber, and 5～10mm gap is left in the bottom in agitator bottom and ageing chamber; Shaft connects agitator and motor through the centre bore of ageing chamber upper cover; Described stirring maturing equipment ageing chamber upper cover is fixed in top, ageing chamber by spring clamp; Between ageing chamber upper cover and grinding chamber uncovered, being provided with rubber ring seals;
Described round and smooth grinding chamber material and stirring ageing chamber material are all selected the stainless steel of wear resistant corrosion resistant; Described round and smooth mill ball material selection polytetrafluoroethylene (PTFE), its density is 2.1～2.2g/cm
3, Shao Shi D hardness 55～60HD; Described ageing mill ball material selection fluorosioloxane rubber, its density is 1.3～1.4g/cm
3, Shore A hardness is 70～75HA, the hardness of described round and smooth mill ball is greater than ageing mill ball hardness; The sphericity of described round and smooth mill ball and ageing mill ball is more than 0.99; Its diameter range is 3～10mm; In described round and smooth grinding chamber, the filling rate of round and smooth mill ball is 40～90%; In described stirring ageing chamber, the filling rate of ageing mill ball is 40～90%.
9. treating apparatus according to claim 8, is characterized in that:
In described round and smooth grinding chamber, the filling rate of round and smooth mill ball is 65～80%; In described stirring ageing chamber, the filling rate of ageing mill ball is 50～65%.
10. treating apparatus according to claim 8, is characterized in that:
Described outlet valve is ball valve; Motor used is fire-proof motor; In device, except round and smooth mill ball and ageing mill ball, be stainless steel with material contact portion.
11. according to the treating apparatus one of claim 1～10 Suo Shu, it is characterized in that:
Described round and smooth treatment facility is connected with remote controllers, and remote controllers comprise digital display screen, variable-frequency governor, timer, motor switch, realizes the Long-distance Control to device running operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320148248.3U CN203409639U (en) | 2013-03-28 | 2013-03-28 | Smooth treatment device for CL-20 grains |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320148248.3U CN203409639U (en) | 2013-03-28 | 2013-03-28 | Smooth treatment device for CL-20 grains |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103360185A (en) * | 2013-03-28 | 2013-10-23 | 北京理工大学 | A kind of round and smooth treatment unit and slip processing method of CL-20 particle |
| CN112743458A (en) * | 2020-12-30 | 2021-05-04 | 罗叶海 | Avoid too big metal surface sand blasting drying device of sand granule |
| CN113368971A (en) * | 2021-06-11 | 2021-09-10 | 江苏恒丰能环科技股份有限公司 | Method for changing pulping process of rod mill |
-
2013
- 2013-03-28 CN CN201320148248.3U patent/CN203409639U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103360185A (en) * | 2013-03-28 | 2013-10-23 | 北京理工大学 | A kind of round and smooth treatment unit and slip processing method of CL-20 particle |
| CN103360185B (en) * | 2013-03-28 | 2016-03-09 | 北京理工大学 | A kind of round and smooth treatment unit of CL-20 particle and slip processing method |
| CN112743458A (en) * | 2020-12-30 | 2021-05-04 | 罗叶海 | Avoid too big metal surface sand blasting drying device of sand granule |
| CN112743458B (en) * | 2020-12-30 | 2023-09-29 | 武汉鸿鑫立信金属制品有限公司 | Avoid too big metal surface sandblast drying device of sand granule |
| CN113368971A (en) * | 2021-06-11 | 2021-09-10 | 江苏恒丰能环科技股份有限公司 | Method for changing pulping process of rod mill |
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