Superfine powder grader
阅读说明:本技术 一种超细粉分级机 (Superfine powder grader ) 是由 徐中州 吕海峰 于 2019-12-14 设计创作,主要内容包括:本发明公开了一种超细粉分级机,含有壳体、分级转子、导风叶片组、驱动装置、传动轴,还含有送料分料装置、导风锥、冲洗分散装置、粗粉收集装置和进风进料管,送料分料装置设置在分级转子的下圆环板上,导风锥位于传动轴下端的下方,导风锥通过支杆设置在壳体内,冲洗分散装置包括进风管,冲洗分散装置的上部设置在壳体的下端上,冲洗分散装置的下部与粗粉收集装置的上部相连,进风进料管的上端穿过粗粉收集装置和冲洗分散装置位于壳体内部,且进风进料管的上端位于导风锥的下方,进风进料管的下端位于粗粉收集装置的外侧,进风进料管下端部上设有进料口,壳体的上部设有若干出风口。本发明不仅分级精度高,而且分级效率高、产量大。(The invention discloses an ultrafine powder grader, which comprises a shell, a grading rotor, an air guide blade group, a driving device, a transmission shaft, a feeding and distributing device, an air guide cone, a flushing and dispersing device, a coarse powder collecting device and an air inlet feeding pipe, wherein the feeding and distributing device is arranged on a lower annular plate of the grading rotor, the air guide cone is positioned below the lower end of the transmission shaft, the air guide cone is arranged in the shell through a support rod, the flushing and dispersing device comprises an air inlet pipe, the upper part of the flushing and dispersing device is arranged at the lower end of the shell, the lower part of the flushing and dispersing device is connected with the upper part of the coarse powder collecting device, the upper end of the air inlet feeding pipe penetrates through the coarse powder collecting device and the flushing and dispersing device and is positioned in the shell, the upper end of the air inlet feeding pipe is positioned below the air guide cone, the, the upper part of the shell is provided with a plurality of air outlets. The invention has the advantages of high grading precision, high grading efficiency and high yield.)
1. An ultrafine powder classifier comprises a shell, a classifying rotor, an air guide blade group, a driving device and a transmission shaft, wherein the driving device is arranged on the top of the shell, the upper end of the transmission shaft is positioned on the outer side of the top of the shell and is connected with the driving device, the upper end of the transmission shaft is rotatably connected with the top of the shell, the lower end of the transmission shaft is positioned in the shell, the lower end of the transmission shaft is rotatably connected with a support, and the support is arranged in the shell; the wind guide blade group forms a circular structure, the upper end of the wind guide blade group is arranged on the upper circular fixing plate, the lower end of the wind guide blade group is arranged on the lower circular fixing plate, and the upper circular fixing plate and the lower circular fixing plate are both arranged in the shell; the grading rotor comprises a fixed frame, a plurality of powder selecting blades, an upper circular plate and a lower circular plate, wherein the upper circular plate and the lower circular plate are respectively arranged at the upper end and the lower end of the fixed frame; the grading rotor is positioned in the wind guide blade group with the circular structure; the device is characterized by further comprising a feeding and distributing device, an air guide cone, a flushing and dispersing device, a coarse powder collecting device and an air inlet feeding pipe, wherein the feeding and distributing device is arranged on a lower annular plate of the grading rotor, the air guide cone is located below the lower end of the transmission shaft, the air guide cone is arranged in the shell through a supporting rod, the flushing and dispersing device comprises an air inlet pipe, the upper portion of the flushing and dispersing device is arranged at the lower end of the shell, the lower portion of the flushing and dispersing device is connected with the upper portion of the coarse powder collecting device, the upper end of the air inlet feeding pipe penetrates through the coarse powder collecting device and is located inside the shell, the upper end of the air inlet feeding pipe is located below the air guide cone, the lower end of the air inlet feeding pipe is located on the outer side of.
2. An ultrafine powder grader according to claim 1, wherein the feeding and distributing device comprises an aggregate cylinder and a plurality of material guiding units, the aggregate cylinder comprises an inner cylinder, an outer cylinder, a circular bottom plate and a plurality of material separating plates, the lower end of the inner cylinder and the lower end of the outer cylinder are respectively arranged on the inner hole and the outer periphery of the circular bottom plate, the upper end of the inner cylinder is arranged on the lower circular plate of the grading rotor, the plurality of material separating plates are respectively and uniformly distributed on the circular bottom plate, one end of each material separating plate is arranged on the outer periphery of the inner cylinder, the other end of each material separating plate is arranged on the inner periphery of the outer cylinder, and an opening is arranged on the periphery of the outer cylinder at the intersection of the material separating plates and the outer cylinder; the guide unit includes the stock guide, the back striker plate, preceding striker plate and deep bead, the back striker plate sets up on the rear end edge of stock guide, preceding striker plate and deep bead pass through the hinge and constitute articulatedly, preceding striker plate sets up on the rear portion of the front end edge of stock guide, the rear end of stock guide constitutes feed opening with the rear end of back striker plate and the rear end of preceding baffle, feed opening sets up on the opening that is equipped with on the outer barrel is global, the front end of stock guide and the front end of the front striker plate of back striker plate constitute ejection of compact opening, the deep bead can open and close ejection of compact opening.
3. An ultrafine powder grader according to claim 2 wherein the lower annular fixing plate is provided with a baffle ring, the baffle ring is of a cylindrical tube structure, the upper end of the baffle ring is arranged on the lower annular fixing plate, the lower end of the baffle ring is positioned above the upper end of the outer cylinder, and the baffle ring is made of a rubber plate.
4. An ultra fine powder classifier as claimed in claim 2, wherein said guide plate is of triangular configuration.
5. An ultra-fine powder classifier as claimed in claim 2, wherein the number of said plurality of guide units is 6 to 12.
6. An ultra-fine powder classifier as claimed in claim 1, wherein said classifying rotor is provided with a convex ring on an upper annular plate and a concave ring on an upper annular fixing plate, said convex ring being fitted with said concave ring, said convex ring being located in said concave ring.
7. A superfine powder classifier as claimed in claim 6, wherein the cross section of the convex ring is rectangular and the cross section of the concave ring is channel-steel.
8. An ultrafine powder grader according to claim 1, wherein the flushing and dispersing device comprises a snail shell, a plurality of flushing and dispersing blades, a plurality of cleaning cones and a landing cone, the snail shell comprises a peripheral surface, a top surface and a bottom surface, a first air inlet pipe and a second air inlet pipe are respectively arranged on the peripheral surface of the snail shell, the first air inlet pipe and the second air inlet pipe are symmetrical relative to the central line of the snail shell, an upper through hole is arranged on the top surface, a lower through hole is arranged on the bottom surface, an upper feed pipe is arranged on the through hole on the top surface, the center of the upper through hole is coincident with the central line of the snail shell, a plurality of flushing and dispersing blades are uniformly distributed in the snail shell, a plurality of flushing and dispersing blades form a circular ring shape, an angle is formed between two adjacent flushing and dispersing blades, the circular ring shape formed by a plurality of flushing and dispersing blades is positioned below the through hole on the top surface of the, the landing assisting cone is of a broken-end cone structure, the annular plate is arranged on the small opening of the landing assisting cone, the large opening of the landing assisting cone is arranged on the lower through hole formed in the bottom surface of the snail shell, the cleaning cones are of hollow round cone structures and have the same structure, the upper end of each cleaning cone is a small opening, the lower end of each cleaning cone is a large opening, the cleaning cones are arranged at the same interval from top to bottom, the cleaning cones form an integral structure through connecting strips and are arranged on the snail shell, the cleaning cones are located in the center of a circular ring formed by the scattered blades, the cleaning cone located at the first upper end of each cleaning cone is located in the upper feeding pipe, and the upper feeding pipe is arranged at the lower end of the shell; the upper part of the air inlet feeding pipe is positioned in the centers of the cleaning cones and the landing assistant cones.
9. An ultra-fine powder classifier as claimed in claim 8, wherein said adjacent two dispersing blades form an angle of 10 ° to 20 °.
10. An ultrafine powder grader according to claim 8, wherein the coarse powder collecting device comprises a guide cylinder and a cone, the large opening of the cone is arranged at the lower end of the guide cylinder, the lower end of the cone is provided with a coarse powder discharging opening, and the upper end of the guide cylinder is arranged on the large opening of the landing assistant cone of the flushing and dispersing device; the lower part of the air inlet feeding pipe is positioned in the material guide cylinder and the cone, and the lower end of the air inlet feeding pipe penetrates through the cone and is positioned on the outer side of the cone.
Technical Field
The invention relates to ultrafine powder grading equipment, in particular to an ultrafine powder grader.
Background
The technical research of the ultrafine powder has become a new hot subject, and according to the current situation and the national conditions, the powder with the particle size of less than 30um is called the ultrafine powder. The superfine powder has the factors of large surface energy, surface atom number, specific surface area and the like, so that the surface tension of the superfine powder is rapidly increased along with the reduction of the particle size, and the special properties cause that the light, sensitivity, heat, magnetism, inductive characteristics, surface stability and the like of the superfine powder are different from those of common powder, so that the superfine powder has special properties and is widely applied to the fields of automobiles, materials, metallurgy, chemical engineering, compounding, bioengineering, medicine and the like. In particular, in recent years, research and application of ultrafine powder have been rapidly developed, and the ultrafine powder has been applied to almost all high, fine, sharp, and advanced disciplines and fields, and it can be said that the ultrafine powder material has penetrated all industrial fields and high-tech fields. The superfine powder concentrator is one of important devices in the powder preparation industry, and various types of powder concentrators in the current market can sort superfine particles of several microns, but the grading precision and the grading efficiency are not high, the finished product quantity is only 6 tons/hour, and the powder concentrator which can be really used in industrial production at present has high grading precision, large processing capacity and high finished product yield is yet to be developed.
Disclosure of Invention
The invention aims to provide an ultrafine powder grader which is high in grading precision, grading efficiency and yield.
In order to solve the technical problem, the invention provides an ultrafine powder classifier, which comprises a shell, a classifying rotor, an air guide blade group, a driving device and a transmission shaft, wherein the driving device is arranged on the top of the shell, the upper end of the transmission shaft is positioned on the outer side of the top of the shell and is connected with the driving device, the upper end of the transmission shaft is rotatably connected with the top of the shell, the lower end of the transmission shaft is positioned in the shell, the lower end of the transmission shaft is rotatably connected with a support, and the support is arranged in the shell; the wind guide blade group forms a circular structure, the upper end of the wind guide blade group is arranged on the upper circular fixing plate, the lower end of the wind guide blade group is arranged on the lower circular fixing plate, and the upper circular fixing plate and the lower circular fixing plate are both arranged in the shell; the grading rotor comprises a fixed frame, a plurality of powder selecting blades, an upper circular plate and a lower circular plate, wherein the upper circular plate and the lower circular plate are respectively arranged at the upper end and the lower end of the fixed frame; the grading rotor is positioned in the wind guide blade group with the circular structure; still contain the pay-off feed divider, the guide cone, wash the dispersion devices, middlings collection device and air inlet pipe, the pay-off feed divider sets up on the lower ring plate of hierarchical rotor, the guide cone is located the below of transmission shaft lower extreme, the guide cone passes through branch setting in the casing, wash the dispersion devices and include the air-supply line, wash the upper portion of dispersion devices and set up on the lower end of casing, it links to each other with the upper portion of middlings collection device to wash the lower part of dispersion devices, the upper end of air inlet pipe passes the middlings collection device and washes the dispersion devices and is located the casing inside, and the upper end of air inlet pipe is located the below of guide cone, the lower extreme of air inlet pipe is located the outside of middlings collection device, be equipped with the feed inlet.
The feeding and distributing device comprises an aggregate cylinder and a plurality of material guiding units, wherein the aggregate cylinder comprises an inner cylinder, an outer cylinder, a circular ring bottom plate and a plurality of material separating plates, the lower end of the inner cylinder and the lower end of the outer cylinder are respectively arranged on the inner hole and the outer periphery of the circular ring bottom plate, the upper end of the inner cylinder is arranged on the lower circular ring plate of the grading rotor, the plurality of material separating plates are respectively and uniformly distributed on the circular ring bottom plate, one end of each material separating plate is arranged on the outer peripheral surface of the inner cylinder, the other end of each material separating plate is arranged on the inner peripheral surface of the outer cylinder, and an opening is formed in the peripheral surface of the outer cylinder at the; the guide unit includes the stock guide, the back striker plate, preceding striker plate and deep bead, the back striker plate sets up on the rear end edge of stock guide, preceding striker plate and deep bead pass through the hinge and constitute articulatedly, preceding striker plate sets up on the rear portion of the front end edge of stock guide, the rear end of stock guide constitutes feed opening with the rear end of back striker plate and the rear end of preceding baffle, feed opening sets up on the opening that is equipped with on the outer barrel is global, the front end of stock guide and the front end of the front striker plate of back striker plate constitute ejection of compact opening, the deep bead can open and close ejection of compact opening.
The lower circular ring-shaped fixing plate is provided with a material blocking ring which is of a cylindrical tube structure, the upper end of the material blocking ring is arranged on the lower circular ring-shaped fixing plate, the lower end of the material blocking ring is located above the upper end of the outer barrel, and the material blocking ring is made of a rubber plate.
The material guide plate is of a triangular structure.
The number of the plurality of material guide units is 6 to 12.
The grading rotor is characterized in that a convex ring is arranged on an upper circular ring plate of the grading rotor, a concave ring is arranged on an upper circular ring fixing plate, the convex ring is matched with the concave ring, and the convex ring is located in the concave ring.
The cross section of the convex ring is rectangular, and the cross section of the concave ring is channel steel.
The flushing and dispersing device comprises a snail shell, a plurality of flushing and dispersing blades, a plurality of cleaning cones and a landing assistant cone, wherein the snail shell comprises a peripheral surface, a top part and a bottom surface, a first air inlet pipe and a second air inlet pipe are respectively arranged on the peripheral surface of the snail shell, the first air inlet pipe and the second air inlet pipe are symmetrical relative to the central line of the snail shell, an upper through hole is arranged on the top surface, a lower through hole is arranged on the bottom surface, an upper feeding pipe is arranged on the upper through hole on the top surface, the center of the upper through hole is superposed with the central line of the snail shell, the flushing and dispersing blades are uniformly distributed in the snail shell, the flushing and dispersing blades form a circular ring shape, an angle is formed between every two adjacent flushing and dispersing blades, the circular ring shape formed by the flushing and dispersing blades is positioned below the through hole on the top surface of the snail shell, the lower end of the circular ring shape formed by the flushing, the large opening of the landing assisting cone is arranged on a lower through hole formed in the bottom surface of the snail shell, the plurality of cleaning cones are of the same structure and are of a hollow round cone structure, the upper end of each cleaning cone is a small opening, the lower end of each cleaning cone is a large opening, the plurality of cleaning cones are arranged at the same interval from top to bottom, the plurality of cleaning cones form an integral structure through connecting strips and are arranged on the snail shell, the plurality of cleaning cones are located in the center of a circular ring formed by the plurality of dispersing blades, the cleaning cone located at the first upper end of each cleaning cone is located in the upper feeding pipe, and the upper feeding pipe is arranged at the lower end of the shell; the upper part of the air inlet feeding pipe is positioned in the centers of the cleaning cones and the landing assistant cones.
The angle formed between two adjacent scattering blades is 10-20 degrees.
The coarse powder collecting device comprises a material guide cylinder and a cone, the large opening of the cone is arranged at the lower end of the material guide cylinder, the lower end of the cone is provided with a coarse powder discharge hole, and the upper end of the material guide cylinder is arranged on the large opening of the landing assistant cone of the flushing and dispersing device; the lower part of the air inlet feeding pipe is positioned in the material guide cylinder and the cone, and the lower end of the air inlet feeding pipe penetrates through the cone and is positioned on the outer side of the cone.
When the ultrafine powder grader is used, a plurality of air outlets arranged on the upper part of the shell are respectively connected with a dust collector, an air blower is connected on an air inlet pipe of the flushing and dispersing device, a fan is connected on an air inlet pipe, the grading rotor rotates under the drive of the transmission shaft, crushed materials enter from a feed inlet of the air inlet pipe, air flow and the materials are mixed to move along the air inlet pipe and reach powder selecting blades of the grading rotor through an air guide cone, a channel formed between the feeding and distributing device and the shell and an air guide blade group, mixed gas obtained after rectification and jet flow dispersion of the materials between the air guide blades and the powder selecting blades forms rotary air flow, coarse powder and fine powder are separated under the action of powerful grading vortex force, fine powder reaching the granularity requirement enters the dust collector along with the air flow through the grading rotor, and. The coarse powder and a small amount of agglomerated fine powder fall into a feeding and distributing device, the feeding and distributing device is driven by a grading rotor to scatter the materials entering the feeding and distributing device towards the inner wall surface of the lower part of a shell, the materials are further dispersed after colliding with the inner wall surface of the shell, particularly the agglomerated fine powder is separated, the separated fine powder enters the grading rotor along with an ascending airflow to be sorted, the rest materials after dispersion spirally descend to a flushing and distributing device along the surface of the shell, the materials are intensively flushed by the spiral centrifugal ascending airflow entering the flushing and distributing device, the agglomerated fine powder is scattered again, the coarse powder and the fine powder are separated again, pure coarse powder is discharged by a coarse powder collecting device, and the fine powder enters a channel formed between the powder collecting device and the shell along with the ascending airflow to reach the grading rotor to be sorted. As can be seen from the above, the materials after being sorted by the grading rotor are firstly dispersed by the feeding and distributing device and then further dispersed after colliding with the inner wall of the shell, and then are intensively washed by the washing and dispersing device, the agglomerated fine powder is broken up again, and the coarse powder and the fine powder are separated again. The ultrafine powder grader sorts, separates, disperses and washes materials, and then sorts, separates again, disperses and washes again, and through the circulation reciprocating, the grading precision is high, the grading efficiency is high, and the yield is large.
Drawings
Fig. 1 is a schematic view of the structure of a micropowder classifier;
FIG. 2 is an enlarged schematic view of the cross-sectional structure A-A in FIG. 1:
FIG. 3 is an enlarged schematic view of the sectional structure of H-H in FIG. 1;
fig. 4 is an enlarged schematic view of the structure of the portion C in fig. 1.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the attached drawings:
as shown in figure 1, the invention discloses a superfine powder classifier, which comprises a
The feeding and distributing
For better collection material, be equipped with on the ring shape fixed
In order to simplify the structure and improve the material scattering effect, the material guiding plate 33 is a triangular structure.
In order to improve the material scattering effect, the number of the plurality of material guide units is 6 to 12.
In order to further improve the sorting effect, a
For the sake of simplifying the structure, the cross section of the
In order to simplify the structure and improve the washing effect on the materials, the washing and dispersing device, as shown in fig. 1 and 3, comprises a
In order to further improve the washing effect on the materials, an angle formed between every two
For simplifying the structure, the coarse powder collecting device, as shown in fig. 1, comprises a material guiding cylinder 15 and a cone 16, wherein a large opening of the cone 16 is arranged on the lower end of the material guiding cylinder 15, a coarse
When the ultrafine powder grader is used, a plurality of
As can be seen from the above, the materials after being sorted by the classifying rotor are firstly dispersed by the feeding and distributing
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
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