CN100391629C - Rotation type separation facility for sieving round wood from powder - Google Patents
Rotation type separation facility for sieving round wood from powder Download PDFInfo
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- CN100391629C CN100391629C CNB200610089520XA CN200610089520A CN100391629C CN 100391629 C CN100391629 C CN 100391629C CN B200610089520X A CNB200610089520X A CN B200610089520XA CN 200610089520 A CN200610089520 A CN 200610089520A CN 100391629 C CN100391629 C CN 100391629C
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Abstract
The present invention relates to a rotary type spherical powder screening device, and belongs to the technical field of the powder screening, which comprises a drive roller, a driven roller, a conveying belt, a material discharging hopper, a drive motor, a slide block mechanism for adjusting height, a tensioning slide block mechanism, a non-spherical powder collection hopper, a spherical powder collection hopper, a cleaning brush and a support seat. The driven roller (2) is 0.5 to 18 centimeters below the driven roller. The center distance between the drive roller (1) and the driven roller (2) is adjustable, and ranges from 24 to 36 centimeters. The conveying belt (3) is tensioned through a tensioning slide block mechanism (7), and the conveying belt keeps the flat state. The drive motor (5) and the drive roller are driven by a belt. Under the function of the drive motor (5), the drive roller (1) drives the conveying belt (3) and the driven roller (2) to clockwise rotate. The running speed of the conveying belt is adjusted by adjusting the rotation speed of the motor. The present invention has the advantage that the mechanization and the serialization of the spherical powder screening are realized; the screening efficiency and the screening quality of the spherical powder are obviously enhanced.
Description
Technical field
The invention belongs to the powder sieving technical field, a kind of rotation type separation facility for sieving round wood from powder particularly is provided.
Background technology
Along with the develop rapidly of modern science and technology, the application of powder body material becomes more diverse, functionalization and becoming more meticulous.In some special applications, performance indications to powder body material have also proposed many special requirements, as in low-temperature refrigeration technology, in order to improve the performance of various refrigeration systems, not only require regenerator to adopt high performance material, also requiring this material is the interior spheric granules of certain particle size scope, this mainly is because spheric granules has high filling rate, under the identical situation of volume, has maximum loading, and, spheric granules is the some contact each other, and occupied state is stable, helps to reduce the flow resistance of working medium fluid.It is the spheric granules of 154～280um that the ideal of cool storage material is used form.
Though there is several different methods can prepare spheric granules at present,, in preparation process, always can't avoid the generation of aspherical particle, the existence meeting of these special-shaped particles has a negative impact to the use of material, for practical application is not wished.Therefore, how aspherical particle is rejected out, become in the novel cool storage material application and be badly in need of one of key issue that solves.Though whether differentiate grain shape is that sphere is very easy,, how to realize that in production reality spheric granules is but quite difficult with effectively separating of aspherical particle.For a large amount of fine particles, only depend on that to carry out by means of the observation instrument that craft separates obviously be infeasible, must explore effective separation means.
Screening about spherical powder, at present in experimental study, generally adopt the ramp type partition method, its basic principle is based on the difference of spheric granules and aspherical particle loading characteristic and kinetic characteristic on the inclined-plane, by small quantities of powder being poured on the inclined-plane with certain surface roughness, under the suitable situation of inclination angle of inclined plane, by continuous percussion vibration, spheric granules can tumble from the inclined-plane, and aspherical particle then rests on the inclined-plane just, thereby realizes the separation of the two.Though this method principle is very simple, but have inconvenience but implement, at first, the residue that rests on the inclined-plane need in time be cleaned out, have a strong impact on otherwise can produce subsequent process, this link has become the key of the whole screening process efficient of restriction.Secondly, screening process is discontinuous, and simple and mechanical, the manual operations that places one's entire reliance upon of blanking and cleaning residue, and not only the amount of labour is big, and efficient is low.Once more, screening operation has very big empirical, and screening quality and efficient depend on the qualification of individual's operation strongly.Of paramount importancely be, once-through operation only can separate small quantities of powder, and therefore, it is feasible that this method is used for laboratory small amount of sample screening, if be used for producing actual, obviously is unacceptable.
Address the above problem, must widen thinking, the facility for sieving round wood from powder device that research and design is novel by realizing the mechanization and the serialization of powder screening process, makes every effort to improve screening quality and screening efficiency comprehensively.
Summary of the invention
The object of the present invention is to provide a kind of rotary type facility for sieving round wood from powder device, the loading characteristic on the certain roughness inclined-plane and the difference of motor behavior based on spherical powder and non-spherical powder utilize the conveyer belt that rotatablely moves to realize the automatic separation of the two.
The inventive system comprises drive roll 1, driven voller 2, conveyer belt 3, following funnel 4, drive motors 5, height adjusting slider mechanism 6, tensioning slide block mechanism 7, non-spherical powder receiving hopper 8, spherical powder receiving hopper 9, cleaning brush 10, bearing 11; Drive roll 1 two ends are placed on the bearing 11, and driven voller 2 two ends are installed in the height adjusting slider mechanism 6.Height adjusting slider mechanism 6 lower ends link to each other with tensioning slide block mechanism 7, and tensioning slide block machine 7 is connected on the bearing 11.Drive roll 1 is connected by conveyer belt 3 with driven voller 2.Driven voller 2 highly is lower than drive roll 1, and its difference in height excursion is 0.5～18cm.Regulate driven voller 2 height by height adjusting slider mechanism 6, the inclination angle of conveyer belt is changed in 1～45 ° of scope.Drive roll 1 and driven voller 2 adjustable center distance, its excursion is 24～36cm.Can make conveyer belt 3 tensionings and keep straightened condition by tensioning slide block mechanism 7.Spherical powder receiving hopper 9 is positioned at driven voller 2 lower lefts, is installed in height adjusting slider mechanism 6 sidewalls, is used to receive spherical powder.Non-spherical powder receiving hopper 8 is installed on the bearing 11, is positioned at drive roll 11 lower right sides, is used to receive non-spherical powder.Cleaning brush 10 is positioned at non-spherical powder receiving hopper 8 inside, closely contacts with conveyer belt 3, is used to clean the aspherical particle of conveyer belt surface adhesion.Drive motors 5 is installed on the bearing 11, and is belt transmission between the drive roll.Under the effect of drive motors 5, drive roll 1 drives conveyer belt 3 and driven voller 2 clockwise rotates, and can adjust the conveyer belt speed of service by regulating motor speed.
Following funnel 4 is placed on the bearing 11, after conveyer belt operates steadily, makes and waits to screen powder by flowing out in funnel 4 outlets down, along sliding on the conveyer belt 3 under the funnel lower bevel.In order to make powder obtain certain initial velocity, make down funnel 4 discharging openings and conveyer belt surface keep certain drop, its excursion is 1～5cm; Along with the difference of height fall, the initial velocity of powder can change between 40～100cm/s.Directly drop down onto generation spring on the conveyer belt 3 for fear of powder, the arc-shaped curved surface structure is adopted in lower end, inclined-plane, funnel 4 bottom, and the radius of curvature excursion is 0.5～2.0cm, and the excursion of radian is 20～75 °, after guaranteeing that powder skids off, obtain and the opposite initial velocity of conveyer belt 3 traffic directions.The width in following funnel 4 discharging opening slits can be adjusted according to the particle size range of powder to be sieved, and its excursion is to wait to screen 1.1～1.5 times of powder diameter, guarantees the single outflow of powder, and is long-pending to avoid powder to form plug on the conveyer belt surface.
After powder falls to conveyer belt 3 surfaces, and there is relative motion between the conveyer belt 3.Because the grain shape difference, spheric granules and aspherical particle there are differences on loading characteristic and motion mode.Conveyer belt 3 motion state that remains a constant speed, when the belt speed absolute value is when waiting to screen 0.2～0.8 times of powder initial velocity absolute value, can guarantee that spheric granules keeps rolling condition substantially, aspherical particle keeps sliding mode substantially.Spheric granules is below accelerated motion left along conveyer belt 3 surfaces, and aspherical particle is under the effect of frictional force, and speed of related movement is decayed rapidly between the conveyer belt 3, going along withly gradually moves to the upper right side.Spheric granules and aspherical particle are separated gradually along conveyer belt 3 traffic directions, and last, spheric granules falls into receiving hopper 9, and aspherical particle falls into receiving hopper (8).Aspherical particle residue for fear of conveyer belt 3 surface adhesion exerts an influence to subsequent process, utilizes cleaning brush 10 in running real time cleaning to be carried out on conveyer belt 3 surfaces, and the particle of removing directly falls into receiving hopper 8.
The screening effect of spherical powder is subjected to the combined influence of multiple factor, and wherein, the factor of most critical is the surface roughness Ra of conveyer belt, inclination alpha and belt speed.According to the difference of waiting to screen pulverulence, can select and change the conveyer belt of different surface roughness Ra for use.The surface roughness Ra decision band of conveyer belt and the coefficient of friction u between the particle, and the span α＜arctgu of final decision conveyer belt inclination alpha.The excursion of conveyer belt surface roughness is Ra (um) 0.1～12.5, and the excursion of conveyer belt inclination alpha is 1～～45 °.
Beneficial effect of the present invention:
The present invention will rotatablely move and the ramp type screening combines, and realize the mechanization of screening operation, solve the discontinuous problem of single ramp type screening operating process, and operating process is greatly simplified, and screening efficiency improves greatly.
The screening that apparatus of the present invention can be used for spherical metal powder, ceramic spherical powder, organic matter spherical powder and composite sphere powder etc. separates.Because the present invention mainly is based on the loading characteristic of particle and the screening that motor behavior difference realizes spherical powder, does not have pollution, can not produce any adverse effect to powder body material, is a kind of screening technique safely and effectively.
Description of drawings
Fig. 1 is apparatus of the present invention schematic diagram.Wherein, drive roll 1, driven voller 2, conveyer belt 3, following funnel 4 and drive motors 5, height adjusting slider mechanism 6, tensioning slide block mechanism 7, non-spherical powder receiving hopper 8, spherical powder receiving hopper 9, cleaning brush 10 and bearing 11.
The specific embodiment
Embodiment 1:
As shown in Figure 1, the special equipment of present embodiment comprises drive roll 1, driven voller 2, conveyer belt 3, following funnel 4, drive motors 5, height adjusting slider mechanism 6, tensioning slide block mechanism 7, non-spherical powder receiving hopper 8, spherical powder receiving hopper 9, cleaning brush 10 and bearing 11; The diameter of drive roll 1 and driven voller 2 is 76cm, and the surface roughness of band is Ra3.2, and the inclination angle is 5 °, and the seam of following funnel 4 is wide to be 0.4mm, discharging opening height 2cm.Motor is for passing through the bel-drivenn stepless speed-regulating motor.Adjust motor speed, keep belt speed 24cm/s, get the HoCu that granularity is 0.28～0.30mm
21 kilogram of magnetic cold-storage material in the funnel, once sieves the spherical powder recovery rate greater than 85% under packing into.
Embodiment 2:
As shown in Figure 1, the surface roughness of band is Ra6.3, and the inclination angle is 10 °, and the seam of following funnel 4 is wide to be 0.5mm, discharging opening height 3cm.Adjust motor speed, keep belt speed 36cm/s, get the HoCu that granularity is 0.35～0.45mm
21 kilogram of magnetic cold-storage material in the funnel, once sieves the spherical powder recovery rate greater than 80% under packing into.
Claims (3)
1. rotary type facility for sieving round wood from powder device, it is characterized in that: this device comprises: drive roll (1), driven voller (2), conveyer belt (3), funnel (4), drive motors (5), height adjusting slider mechanism (6), tensioning slide block mechanism (7), non-spherical powder receiving hopper (8), spherical powder receiving hopper (9), cleaning brush (10) and bearing (11) down; Funnel (4) was placed on the bearing (11) under drive roll (1) reached, and driven voller (2) two ends are installed in the height adjusting slider mechanism (6); Height adjusting slider mechanism (6) lower end links to each other with tensioning slide block mechanism (7), and tensioning slide block mechanism (7) is connected on the bearing (11); Drive roll (1) is connected by conveyer belt (3) with driven voller (2); Driven voller (2) highly is lower than drive roll (1), and its difference in height excursion is 0.5～18cm; Regulate driven voller (2) highly by height adjusting slider mechanism (6), the inclination angle of conveyer belt is changed in 1～45 ° of scope; Drive roll (1) and driven voller (2) adjustable center distance, its excursion is 24～36cm; Make conveyer belt (3) tensioning and keep straightened condition by tensioning slide block mechanism (7); Spherical powder receiving hopper (9) is positioned at driven voller (2) lower left, is installed in height adjusting slider mechanism (6) sidewall, is used to receive spherical powder; Non-spherical powder receiving hopper (8) is installed on the bearing (11), is positioned at drive roll (1) lower right side, is used to receive non-spherical powder; Cleaning brush (10) is positioned at non-spherical powder receiving hopper (8) inside, closely contacts with conveyer belt (3), is used to clean the aspherical particle of conveyer belt surface adhesion; Be belt transmission between drive motors (5) and the drive roll, under the effect of drive motors (5), drive roll (1) drives conveyer belt (3) and driven voller (2) clockwise rotates, and adjusts the conveyer belt speed of service by regulating motor speed.
2. according to the described device of claim 1, it is characterized in that: the excursion of conveyer belt surface roughness is Ra0.1～12.5 μ m; Following funnel discharging opening and conveyer belt surface keep 1～5cm drop; Along with the difference of height fall, the initial velocity of powder changes between 40～100cm/s; The arc-shaped curved surface structure is adopted in lower end, funnel bottom inclined-plane, and the radius of curvature excursion is 0.5～2.0cm, and the excursion of radian is 20～75 °, guarantee that powder skids off after, obtain the initial velocity opposite with the conveyer belt traffic direction.
3. according to claim 1 or 2 described devices, it is characterized in that: the width in following funnel discharging opening slit is adjusted according to the particle size range of powder to be sieved, its excursion is to wait to screen 1.1～1.5 times of powder diameter, guarantee the single outflow of powder, long-pending to avoid powder to form plug on the conveyer belt surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610089520XA CN100391629C (en) | 2006-06-30 | 2006-06-30 | Rotation type separation facility for sieving round wood from powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610089520XA CN100391629C (en) | 2006-06-30 | 2006-06-30 | Rotation type separation facility for sieving round wood from powder |
Publications (2)
| Publication Number | Publication Date |
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| CN1872431A CN1872431A (en) | 2006-12-06 |
| CN100391629C true CN100391629C (en) | 2008-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200610089520XA Expired - Fee Related CN100391629C (en) | 2006-06-30 | 2006-06-30 | Rotation type separation facility for sieving round wood from powder |
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| CN104588322A (en) * | 2015-02-02 | 2015-05-06 | 苏州化联高新陶瓷材料有限公司 | Device for sorting aspheric body porcelain balls |
| CN105032769A (en) * | 2015-06-05 | 2015-11-11 | 云南锡业锡材有限公司 | Welding powder screening device and screening process thereof |
| CN106076854A (en) * | 2016-07-04 | 2016-11-09 | 陆建民 | Talcum and miscellaneous stone Mineral separation device |
| CN106311613A (en) * | 2016-08-30 | 2017-01-11 | 中国科学院山西煤炭化学研究所 | Separating method and device for spherical and non-spherical particles of non-metal material |
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| CN111097699A (en) * | 2019-12-31 | 2020-05-05 | 兴化市红阳玻璃制品有限公司 | Can accurate cyclotomic ware of getting rid of impurity |
| CN112474079B (en) * | 2020-12-09 | 2024-04-02 | 江苏金物新材料有限公司 | Powder sorting and separating system |
| CN114345707A (en) * | 2022-01-11 | 2022-04-15 | 万华化学集团股份有限公司 | Method and device for continuously separating conjoined spheres/ellipsoids in spherical particles and application |
| CN115648478A (en) * | 2022-10-09 | 2023-01-31 | 南京昊翔机械制造有限公司 | Biodegradable granule extruding machine |
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2006
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Patent Citations (8)
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| GB1287397A (en) * | 1970-05-14 | 1972-08-31 | Barclay Ross & Hutchison Ltd | Cleaner and separator for grain or other granular materials |
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| CN1872431A (en) | 2006-12-06 |
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