CN2736062Y - Hydraulic flow pulverizer - Google Patents
Hydraulic flow pulverizer Download PDFInfo
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- CN2736062Y CN2736062Y CN 200420041740 CN200420041740U CN2736062Y CN 2736062 Y CN2736062 Y CN 2736062Y CN 200420041740 CN200420041740 CN 200420041740 CN 200420041740 U CN200420041740 U CN 200420041740U CN 2736062 Y CN2736062 Y CN 2736062Y
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Abstract
The utility model discloses a hydraulic flow pulverizer. The hydraulic flow pulverizer prepares superfine and ultramicro material by physical processes. The hydraulic flow pulverizer is formed by a grinding mill, a separator and a classifier, that is, the feed inlet of the classifier is connected with the flange of the discharge port of the separator, the discharge port of the fine powder of the classifier is connected with a cyclone collector and a bale collector, a grinding cavity is connected with the transmission shaft of a bearing by the shaft hole of the cover plate of the flange, and a screw conveyer is connected with the feed tube of the cover plate of the flange of the grinding cavity. A double negative-pressure impeller and the transmission shaft of a bearing are assembled in the grinding cavity. The diversion gear ring of a stator and the inner ring of the grinding cavity are assembled and fixed. The separator is abutted with the connecting plate of the discharge port of the grinding cavity. Feed back tubes are connected with the back flow ports of coarse powder on the both sides of the grinding mill. By a high turbulent field created in the grinding cavity by the double negative-pressure impeller specially designed, the utility model enables material to quickly and effectively pulverize, impinge, automatically grind, and shear. Thereby, the material obtains effectively refine, and the material which is refined obtains nano grade.
Description
Technical field
The utility model belongs to a kind of reducing mechanism of realizing solid material physical technology process.Relate in particular to a kind of turbulent flow flour mill.This flour mill is the high turbulence that utilizes two negative pressure impellers to produce when the mill chamber high speed is rotated, and makes material bump, autogenous grinding, shearing mutually, thereby material is pulverized effectively, and can carry out the not classification of particle diameter simultaneously.Its technical applications is very extensive, it not only is used for leading-edge fields such as military project, space flight, and in different industries, extensively used, as the relevant industries such as super-fine processing of chemical industry, electronics, machinery, metallurgical building materials, plastics, rubber, food, medicine, feed, papermaking, daily use chemicals, the energy, environmental protection, nonmetallic materials.
Background technology
Airslide disintegrating mill is present more advanced in the world ultra-fine equipment, mainly contains following several types: 1. flat airslide disintegrating mill: 2. circulating airslide disintegrating mill; 3. to spray formula airslide disintegrating mill; 4. target formula airslide disintegrating mill; 5. fluidized bed type airslide disintegrating mill etc.List having of " 15 " " national science and technology achievement " key popularized project in: the jet of BJ University of Aeronautics ﹠ Astronautics is pulverized and classifying equipoment: (model JFC 30) working media compressed air, gas consumption 15m
2/ mn, power 170kW, feed size 0.5mn, finished product granularity 2-8 micron, output hour 30kg.Also have Chinese Academy of Sciences Beijing three ring powder High-tech company fluidized bed jet mills, it is example that material fineness d50 can only reach the 2-40 micron.China Light Industry Press publishes 2001 bibliographical informations according to another technical literature (ultra-fine grinding classification technique); The problem that airslide disintegrating mill exists hampers applying of this technology to a certain extent.Subject matter is as follows: 1, energy consumption is big, production efficiency is low.2, output is less, generally is no more than 100kg/h, and is most of less than 50kg/h.3, preparation ultra micro powder is also relatively more difficult.4, the airslide disintegrating mill complex structure costs an arm and a leg.At above problem, the air-flow crushing technology is not advanced at present.
Mechanical impact crusher and vibration medium grinder are a kind of more traditional mechanical milling equipments, and the type kind is many.Its mechanism is to utilize the direct drive medium of mechanical energy to move comminuting matter, and crush efficiency is also very low, and difficulty reaches the powder purity requirement, and it is poor that smashing fineness is compared airflow milling.For example vibrating medium grinder effectively pulverizes merit about 0.3% and has 98% energy to be converted into heat and loss approximately.Airslide disintegrating mill is to utilize up to velocity of sound or subsonic air-flow to penetrate the energy comminuting matter.Mechanical energy is converted to velocity of sound air motion energy, needs to consume lot of energy, and the former is bigger for its energy consumption work ratio.
Ultrafine powder (sub-micron and nanoscale) is the basic material of 21 century, is one of focus of current high-tech area international competition; There is technical literature report can produce at present, but the ultrafine powder that the employing chemical method is produced, tends to change the physical property of material itself with chemical method, do not reach the result of use of superfine material, agglomeration traits is difficult to solve, and production efficiency is low, costs an arm and a leg.
The utility model content
The present situation of using at ultra-fine, ultrafine powder investigation of materials at present and the problem of existence, the purpose of this utility model aims to provide a kind of turbulent flow flour mill.The high turbulence motion that the special purpose impeller that i.e. utilization designs voluntarily produces when the mill chamber high speed is rotated, promptly form random random motion by the whirlpool body that differs in size, mix mutually owing to the whirlpool body in the turbulent flow, cause the inner momentum-exchange of fluid, the big particle of momentum is passed to particle little when moving with momentum, the particle that momentum is little influences the big particle of momentum again, the result spreads has increased momentum, the transport of quality, when being in the high turbulence field by the pulverizing object, just constituted Dual-Phrase Distribution of Gas olid, turbulence energy from mechanical device (impeller) obtains passes to micro cyclone by effect of inertia step by step by maelstrom.In this complicated turbulence process, produce strong bump, autogenous grinding, shear force, thereby material is pulverized effectively.
The purpose of this utility model is achieved through the following technical solutions:
A kind of turbulent flow flour mill, grinding machine mainly are made up of base, variable-frequency motor, two negative pressure impeller, mill chamber, hopper, feed back pipe, screw input feeder, separator, stator water conservancy diversion gear ring, grader, electrical control cabinet.Grinding machine is horizontal type, the feed pipe that is connected with mill chamber stretches in tremie pipe and the cavity that belt body, middle part body are connected, and relative with the classifying turbine that connects of impeller shaft in the graded chamber, impeller shaft, separator, mill chamber are vertical, are seated on the base and are in same center line.The fine powder outlet of grader connects whirlwind collector I, II and cloth bag collector.Mill chamber is by flange plate axis hole and bearing propeller shaft couplings, and screw input feeder and mill chamber flange plate feed pipe connect; Two negative pressure impellers and bearing drive shaft cartridge fit in the mill chamber, stator water conservancy diversion gear ring and mill chamber inner ring mount; The discharging opening gusset piece butt joint of separator and mill chamber, feed back pipe and grinding machine both sides meal refluxing opening connect.
Above-mentioned so-called pair of negative pressure impeller be with bolt, nut, pad, bullet pad, hexagon socket head cap screw with fan-shaped shock plate, I, II type tooth plate, about throw the positive and negative that arc hypsokinesis blade is assemblied in the leaf dish, and the cross-distribution symmetry becomes one and rotation direction is identical.
About to throw arc hypsokinesis blade be 40 °-50 ° by the tangent line of leaf Pan Waiyuanchu with the angle of leaf dish basic circle point, about throwing arc hypsokinesis blade lean on leaf dish axle place to be the inclined-plane, the center line angle of its inclined-plane and leaf dish axle is 50 °-60 °.
Throwing camber hypsokinesis blade and fan-shaped shock plate, I, II type tooth plate respectively are more than four about being equipped with on the leaf dish.
I, II type tooth plate, fan-shaped shock plate radius of addendum do not wait.
Stator water conservancy diversion gear ring is housed in the mill chamber, on the stator water conservancy diversion gear ring inner ring tooth bar and discharging opening is arranged, the number of teeth of tooth bar is 50-200, and its profile of tooth is circular arc, and angle is 40-50 °.
Separator by discharge nozzle, fine powder storehouse, bump separating plate, meal storehouse, separate swash plate, crash panel, connecting flange, meal and return storehouse, joint cover, meal backflow swash plate and form.Bump separating plate and crash panel top are cone-shaped, and angle is 60 °, separate swash plate weldering knot at meal storehouse two walls; Meal backflow swash plate is fixed in the meal back cavity, and angle is 45 °-55 ° between its inclined-plane and joint cover.
Meal feed back pipe all is equipped with in the grinding machine both sides, feed back pipe top and the butt joint of grinding machine both sides meal feedback outlet, bend pipe below and the butt joint of grinding machine two side cover plate negative pressuren zone charging apertures.
The beneficial effect of advantage of the present utility model and generation is
1, has considerable energy-saving effect
The mechanical milling equipment of tradition is to utilize the direct drive medium of mechanical energy to move comminuting matter, and crush efficiency is low, the energy consumption height.Airslide disintegrating mill is to utilize to penetrate up to velocity of sound or subsonic air-flow to be used for comminuting matter.Mechanical energy is converted to the velocity of sound air motion can need lot of energy, and the former is bigger for its energy loss-rate." turbulent flow flour mill " Energy saving mechanism and effect are that effect of inertia trends towards the micro cyclone scope of energy dissipation to high wave number in the turbulent flow, and viscous effect only just exists in high wave-number range consumingly, and consumes the energy that is transported from maelstrom by effect of inertia by it.The reynolds number Re of this turbulent flow flour mill=6.6 * 10
5, (high turbulence is in high reynolds number Re＞1.5 * 10
5Following generation), really can produce the high turbulence motion.Reynolds number is bigger, and effect of inertia is stronger, and it can be transported to energy higher wave-number range, and viscous effect is forced to the effect that just can manifest viscous force on the higher wave-number range.When Reynolds number is fully big, exhaustion range is located in from containing on the very high wave number of energy range, at this moment contain energy range and do not participate in viscosity consume effect fully.
" turbulent flow flour mill " utilizes this characteristic of large Reynold number in the turbulent motion to save to pulverize energy consumption just.Because the Reynolds number of turbulent flow flour mill is up to Re＞1.5 * 10
5, because this Reynolds number is fully big, so effect of inertia preponderates, and makes material obtain to pulverize effectively, that is to say that the turbulence energy that is transported by mechanical device (impeller) can send material to fully, effectively pulverizes, useless power consumption is few.
By following mask body data according to then turbulent flow flour mill energy-saving effect is very outstanding as can be seen: (1) adopts airslide disintegrating mill to pulverize carborundum d50-8.25 μ m, power consumption 900-1000kwh/t, and adopt turbulent flow flour mill d50=5.2 μ m, power consumption is 90kwh/t only; (2) adopt mechanical shock formula ultrafine crusher, pulverize chrome oxide green d98=40 μ m power consumption 500-600kwh/t, adopt turbulent flow flour mill d98.74=2.5 μ m, power consumption is 58kwh/t only; (3) adopt vibration superfine powder grinding machine to pulverize calcite d50=38 μ m, power consumption 200kwh/t adopts turbulent flow flour mill d50=20 μ m, and power consumption is 40kwh/t only.
Can see that by last example energy-saving effect is considerable.
2, has gratifying environment protecting
The world today has caused global great attention to control environmental pollution and man-made noise, industrialization elimination of dust contamination difficulty maximum particularly, and existing milling equipment all exists powder in various degree to leak and the big technological difficulties of noise of equipment.The turbulent flow flour mill, the mill chamber device is when utilizing the impeller of particular design to rotate at a high speed, throw lonely type hypsokinesis blade about the impeller both sides and be the inclined-plane by leaf dish axis hole outer rim place and leaf dish axle place, the angle of its inclined-plane and leaf disk center line is 60 °, during the impeller rotation, the mill chamber both sides have all formed negative pressure and have been vorticity, have produced high-intensity eddy current, thereby the axis hole that has effectively guaranteed the mill chamber center need not seal the technical barrier that powder can not leak.
In addition, two negative pressure impellers of turbulent flow flour mill, leaf dish two sides symmetry and crossover location are equipped with quantity respectively and equate blade, and equilibrium phase is a good, and steadily reliable during the impeller rotation, noise of equipment is very little, generally about 70 decibels.
3, has the wet-milling effect
The discharging opening of stator water conservancy diversion gear ring discharging opening and mill chamber below is docked mutually fixing, just can be exchanged into the effect that processing is pulverized in wet-milling by valve control discharging flow velocity.
4, the feasibility that has the industrialization of prepared by physical method nano material
The test data that obtains from present ultramicro grinding particle, the various materials that the turbulent flow flour mill is pulverized, its ratio of the amount of ultra micro powder has surpassed existing superfine grinding equipment greatly, and for example chrome oxide green meta particle diameter has reached 500nm with carefully, and wherein 200nm accounts for about 10%; Particulate footpath 800nm is with carefully in the calcium carbonate, and wherein 300nm is carefully to occupy 1 5.6%.If further explore the processing technology of turbulent flow flour mill best design parameter and micro mist aspect again, further perfect on supporting again, the impeller linear velocity increases again, the ratio of micro mist amount may also have raising by a relatively large margin, be equipped with high fine graded equipment simultaneously, nano level micro mist is separated, and the industrialization approach of opening up a strip adoption prepared by physical method nano material for China is feasible.
Description of drawings
Fig. 1 is a turbulent flow flour mill schematic diagram
Fig. 2 is Fig. 1 blade wheel structure schematic diagram
Fig. 3 is Fig. 2 A-A face cutaway view
Fig. 4 is that Fig. 2 throws arc hypsokinesis spoon of blade view
Fig. 5 is Fig. 4 B-B face cutaway view
Fig. 6 is spindle nose inclined-plane and leaf disk center wire clamp angle schematic diagram
Fig. 7 is the two negative pressure impeller assembling of a Fig. 1 schematic diagram
Fig. 8 is Fig. 1 stator water conservancy diversion gear ring schematic diagram
Fig. 9 is Fig. 1 stator water conservancy diversion gear ring schematic perspective view
Figure 10 is Fig. 9 D-D face cutaway view
Figure 11 is that schematic diagram cuts open in Fig. 1 separator master office of looking
Figure 12 is Fig. 8 side view
Figure 13 is Fig. 1 material disintegrating process figure
Reference numeral:
Tremie pipe 1, fine powder outlet 2, classifying turbine 3, feed pipe 4, middle part body 5, annular solid 6, secondary air mouth 7, adjustable pipe 8, cavity impeller shaft 9, outlet 10, end Cuo 11, variable-frequency motor 12, bearing power transmission shaft 13, two negative pressure impellers 14, mill chamber 15, fan-shaped shock plate 16, hopper 17, feed back pipe 18, screw input feeder 19, separator 20, stator water conservancy diversion gear ring 21, I, II type tooth plate 22,31, bolt 23, nut 24, pad 25, about throw arc hypsokinesis blade 26,30, hexagon socket head cap screw 27, bullet pad 28, leaf dish 29, tooth bar 32, discharging opening 33, discharge nozzle 34, fine powder storehouse 35, bump separating plate 36, coarse fodder storehouse 37, separate swash plate 38, crash panel 39, connecting flange 40,41, meal returns storehouse 42, joint cover 43, meal backflow swash plate 44.
The specific embodiment
A kind of turbulent flow flour mill, grinding machine mainly are made up of base 11, variable-frequency motor 12, two negative pressure impeller 14, mill chamber 15, hopper 17, feed back pipe 18, screw input feeder 19, separator 20, stator water conservancy diversion gear ring 21, grader, electrical control cabinet.Grinding machine is horizontal type, the feed pipe 4 that is connected with mill chamber 15 stretches in tremie pipe 1 and the cavity that belt body 6, middle part body 5 are connected, and relative with the impeller 3 that connects of impeller shaft 9 in the cavity, and impeller shaft 9, separator 20, mill chamber 15 are vertical, be located on the base 11, and be in same center line.Fine powder outlet 2 connects whirlwind collector I, II and cloth bag collector.Secondary air mouth 7 communicates with cavity.Two flange plates are equipped with in mill chamber 15 left and right sides, wherein the center of left cover has charging hole, the center of right cover plate has the installing hole of turning cylinder, and mill chamber 15 flange plate axis holes and bearing power transmission shaft 13 connect, and screw input feeder 19 and mill chamber 15 flange feed pipes 4 connect; Two negative pressure impellers 14 and bearing power transmission shaft 13 are assemblied in the mill chamber 15.Two negative pressure impellers 14 are with bolt 23, nut 24, pad 25, bullet pad 28, hexagon socket head cap screw 27 about 16,8 of 8 fan-shaped shock plates to be thrown the positive and negative that arc hypsokinesis blade is assemblied in leaf dish 29, about to throw arc hypsokinesis blade 26,30 be 45 ° by the tangent line at leaf dish 29 outer rim places and the angle of leaf dish basic circle point, about throw arc hypsokinesis blade 26,30 and be the inclined-plane by leaf dish axle place, the angle of its inclined-plane and leaf dish 29 center lines is 60 °.About to throw arc hypsokinesis blade 26,30, fan-shaped shock plate 16, I, II type tooth plate 22,31 alternate and rotation direction is identical, and be symmetrically distributed.Fan-shaped shock plate 16 is assembled into one with I, II type tooth plate 22,31, and I, II type tooth plate 22,31 radiuss of addendum do not wait.Stator water conservancy diversion gear ring 21 inner rings have tooth bar 32 and discharging opening 33, and with mill chamber 15 inner ring mounts, the number of teeth of tooth bar 32 is 100, and flute profile is circular arc, and angle is 45 °; Discharging opening 33 assemblings of separator 20 and mill chamber 15 connect.Bump separating plate 36 and crash panel 39 tops in the separator 20 are cone-shaped, and angle is 60 °, separate two walls, the meal backflow swash plate 44 of swash plate 38 weldering knots in meal storehouse 37 and are fixed in the meal back cavity, and its inclined-plane and joint cover 43 angles are 50 °.
Material enters mill chamber 15 by screw input feeder 19, and variable-frequency motor 12 drives bearing power transmission shaft 13, and the also rotation thereupon of two negative pressure impellers 14 is housed on the power transmission shaft 13.Because two negative pressure impellers 14 are to be assembled by left and right type throwing arc hypsokinesis blade 26,30 and fan-shaped shock plate 16, I, II type tooth plate 22,31, the blade of impeller 14 is curved, the blade hypsokinesis, be 60 degree and formed swirl shape by leaf dish axle place, vortex must form eddy current, and eddy current certainly leads to negative pressure.When pulverized solid material is in the high velocity turbulent flow field in mill chamber 15, just constituted Dual-Phrase Distribution of Gas olid, the turbulence energy from impeller 14 obtains passes to micro cyclone by effect of inertia step by step by maelstrom.In addition, stator water conservancy diversion gear ring 21 produces material guide effect power at mill chamber 15, powder is under the tooth bar and high turbulence effect of circular arc, strong autogenous grinding takes place each other, quicken the refinement of material, material produces strong bump, autogenous grinding, shear force in this turbulent motion, thereby material is pulverized effectively.
Pulverized powder enters separator 20 along with the rising of air-flow, and under the drive of grader impeller shaft 9, the grading wheel of rotation 3 is separable to go out the 5-40 micron with thin powder, and below standard powder returns mill chamber 15 by feed back pipe 18, continues to pulverize, refinement.Continue to rise from separator 20 isolated fine powders, again by the grader sorting, fine powder up to standard enters whirlwind collector I by fine powder outlet 2.The fine powder of drift enters whirlwind collector II and cloth bag collector respectively along with powder proportion difference, and below standard fine powder enters screw input feeder 19 by the meal outlet 10 of tremie pipe 1 again, is admitted to mill chamber 15 again, continues dispersion and fining.
Through pulverize repeatedly, refinement, the material meta particle diameter that whirlwind collector I collects is 10 μ m with carefully, 300 kilograms/hour; The material meta particle diameter that whirlwind collector II collects is 5 μ m with carefully, 60 kilograms/hour; The micropowders meta particle diameter 500nm that the cloth bag collector is collected, 20 kilograms/hour.
Claims (8)
1, a kind of turbulent flow flour mill, grinding machine mainly is by base (11), variable-frequency motor (12), bearing power transmission shaft (13), two negative pressure impellers (14), mill chamber (15), hopper (17), feed back pipe (18), screw input feeder (19), separator (20), stator water conservancy diversion gear ring compositions such as (21), grinding machine is horizontal type, the feed pipe (4) that is connected with mill chamber (15) stretches into tremie pipe (1) and belt body (6), in the cavity that middle part body (5) is connected, and it is relative with the classifying turbine (3) of impeller shaft (9) connection in the grader cavity, impeller shaft (9), separator (20), mill chamber (15) is vertical, is seated in base (11) and goes up and be in same center line; The fine powder outlet (2) of grader connects whirlwind collector I, II and cloth bag collector; It is characterized in that: mill chamber (15) connects with bearing power transmission shaft (13) by the flange plate axis hole, and screw input feeder (19) and mill chamber (15) flange plate feed pipe (4) connect; Two negative pressure impellers (14) and bearing power transmission shaft (13) are assemblied in the mill chamber (15), stator water conservancy diversion gear ring (21) and mill chamber (15) inner ring mount; Discharging opening gusset piece (43) butt joint of separator (20) and mill chamber (15), feed back pipe (18) and grinding machine both sides meal refluxing opening connect.
2, a kind of turbulent flow flour mill according to claim 1, it is characterized in that described pair of negative pressure impeller (14) be with bolt (23), nut (24), pad (25), bullet pad (28), hexagon socket head cap screw (27) with fan-shaped shock plate (16), I, II type tooth plate (22,31), about throw the positive and negative that arc hypsokinesis blade (26,30) is assemblied in leaf dish (29), and the cross-distribution symmetry becomes one and rotation direction is identical.
3, a kind of turbulent flow flour mill according to claim 1 and 2, throwing arc hypsokinesis blade (26,30) about it is characterized in that is 40 °-50 ° by the tangent line at leaf dish (29) outer rim place and the angle of leaf dish basic circle point, about throw arc hypsokinesis blade (26,30) and be the inclined-plane by leaf dish axle place, the center line angle of its inclined-plane and leaf dish (29) spool is 50 °-60 °.
4, a kind of turbulent flow flour mill according to claim 1 and 2 is thrown camber hypsokinesis blade (26,30) and fan-shaped shock plate (16), I, II type tooth plate (22,31) respectively is more than four about it is characterized in that being equipped with on the leaf dish (29).
5, a kind of turbulent flow flour mill according to claim 1 and 2 is characterized in that I, II type tooth plate (22,31), fan-shaped shock plate (16) radius of addendum do not wait.
6, a kind of turbulent flow flour mill according to claim 1, it is characterized in that being equipped with in the mill chamber (15) stator water conservancy diversion gear ring (21), tooth bar (32) and discharging opening (33) are arranged on stator water conservancy diversion gear ring (21) inner ring, the number of teeth of tooth bar (32) is 50-200, its profile of tooth is circular arc, and angle is 40-50 °.
7, a kind of turbulent flow flour mill according to claim 1, it is characterized in that separator (20) by discharge nozzle (34), fine powder storehouse (35), bump separating plate (36), meal storehouse (37), separate swash plate (38), crash panel (39), connecting flange (40,41), meal and return storehouse (42), joint cover (43), meal backflow swash plate (44) and form, bump separating plate (36) and crash panel (39) top are cone-shaped, angle is 60 °, separates swash plate (38) weldering and ties in the meal storehouse (37) two walls; Meal backflow swash plate (44) is fixed in the meal back cavity, and angle is 45 °-55 ° between its inclined-plane and joint cover.
8, a kind of turbulent flow flour mill according to claim 1 is characterized in that the grinding machine both sides all are equipped with meal feed back pipe (18), feed back pipe (18) top and the butt joint of grinding machine both sides meal feedback outlet, and bend pipe below and grinding machine two side cover plate negative pressuren zone charging apertures dock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420041740 CN2736062Y (en) | 2004-03-23 | 2004-03-23 | Hydraulic flow pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420041740 CN2736062Y (en) | 2004-03-23 | 2004-03-23 | Hydraulic flow pulverizer |
Publications (1)
| Publication Number | Publication Date |
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| CN2736062Y true CN2736062Y (en) | 2005-10-26 |
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ID=35306799
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420041740 Expired - Lifetime CN2736062Y (en) | 2004-03-23 | 2004-03-23 | Hydraulic flow pulverizer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295021C (en) * | 2004-04-15 | 2007-01-17 | 杨富茂 | Mechanical turbulence milling tools |
| CN104258929A (en) * | 2014-09-17 | 2015-01-07 | 中国科学院上海高等研究院 | Grinding equipment |
| CN107032131A (en) * | 2017-05-19 | 2017-08-11 | 中国恩菲工程技术有限公司 | Monazite processing/transfer system |
| CN117943182A (en) * | 2024-03-22 | 2024-04-30 | 河北汇亚新材料集团股份有限公司 | Porous carbon-carbon molecular sieve superfine pulverizer and pulverizing method |
-
2004
- 2004-03-23 CN CN 200420041740 patent/CN2736062Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295021C (en) * | 2004-04-15 | 2007-01-17 | 杨富茂 | Mechanical turbulence milling tools |
| CN104258929A (en) * | 2014-09-17 | 2015-01-07 | 中国科学院上海高等研究院 | Grinding equipment |
| CN107032131A (en) * | 2017-05-19 | 2017-08-11 | 中国恩菲工程技术有限公司 | Monazite processing/transfer system |
| CN117943182A (en) * | 2024-03-22 | 2024-04-30 | 河北汇亚新材料集团股份有限公司 | Porous carbon-carbon molecular sieve superfine pulverizer and pulverizing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040323 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |