CN216397115U

CN216397115U - Multistage grading plant

Info

Publication number: CN216397115U
Application number: CN202123191200.4U
Authority: CN
Inventors: 王金山
Original assignee: Weifang Huicheng New Material Technology Co ltd
Current assignee: Weifang Huicheng New Material Technology Co ltd
Priority date: 2021-12-18
Filing date: 2021-12-18
Publication date: 2022-04-29
Anticipated expiration: 2031-12-18

Abstract

The utility model discloses a multistage grading device, which comprises an induced draft fan and at least two graders, wherein each grader comprises a feed inlet, an upper discharge outlet and a lower discharge outlet, the feed inlet of the downstream grader is communicated with the upper discharge outlet of the upstream adjacent grader, the induced draft fan is connected with the upper discharge outlet of the end grader, and a dust removal device is arranged between the induced draft fan and the end grader. The method is realized by multiple and multistage fine grading by adopting a multistage grading process. The artificial graphite powder classifying device is formed by connecting a plurality of classifiers and can simultaneously classify two sections with different particle sizes. Effectively catch near whole qualified finished product at the classification in-process, guarantee that the material is not extravagant basically, improve product preparation rate and yield, hierarchical precision and classification efficiency are higher, have good stable physical form, and the particle size distribution concentration is high, can effectively guarantee the content of target granule, has stopped the existence of large granule, has promoted finished product quality.

Description

Multistage grading plant

Technical Field

The present invention relates to a multistage classifier.

Background

Conventional artificial graphite classification is performed using a single-stage classifier. In the single classifier, a motor drives a classifying wheel to rotate at high speed in a classifying shell, the rotating speed can be adjusted at will, and strong centrifugal force is formed in the classifier. The gas-powder mixture entering the classifier firstly enters the inside of the classifying wheel, and under the action of centrifugal force, large or heavy particles are subjected to large centrifugal force, so that the large or heavy particles are thrown to the periphery of the classifying wheel to the side wall of the classifier, are not influenced by the centrifugal force, naturally fall into the crushing main machine to be continuously crushed or fall into a lower discharge port to be collected; the small or light materials are small under the action of centrifugal force, hover in the grading wheel, are brought to high positions under the influence of induced wind force of the induced draft fan, and are graded or collected along the pipeline. The centrifugal force in the classifier can be adjusted by adjusting the rotating speed of the classifying wheel through frequency conversion, so that the purpose of separating the artificial graphite with the specified granularity is achieved. Only one kind of finished product with one granularity section can be obtained by single machine classification, such as a 10-micron classified product: the defects that the particle size is unstable, the number of particles with the particle size group larger than 5 microns is small and 2, the collection and classification cause the increase of secondary pollution magnetic substances, and the need of purification and deironing increase manpower and material resources are overcome when the residual fine powder after 10-micron products are separated is collected and classified again into 5-micron products.

Disclosure of Invention

In order to make up for the defects, the utility model provides the novel grain size distribution granule which has good and stable physical form, high particle size distribution concentration, can effectively ensure the content of target grains, avoids the existence of large grains and improves the quality of finished products; but also to produce a multi-stage classifier of at least two materials of different particle sizes.

The technical scheme of the utility model is as follows: the utility model provides a multistage grading plant, includes draught fan and two at least graders, the grader includes feed inlet, top discharge gate and bottom discharge gate, is located the low reaches the feed inlet of grader with be located the adjacent on the upper reaches the top discharge gate of grader communicates each other, draught fan and end the top discharge gate of grader links to each other, the draught fan with be located the end be equipped with dust collector between the grader.

As a preferable technical scheme, a feed inlet of the classifier at the head end is connected to an upper discharge outlet of the pretreatment classifier.

As a preferable technical scheme, the grader comprises an outer cylinder body which is vertically arranged, a sealing plate is fixedly arranged at the upper end of the outer cylinder body, a grading wheel shaft is rotatably arranged on the sealing plate, the lower end of the grading wheel shaft extends into the outer cylinder body and is fixedly provided with a grading wheel, the outer cylinder body is provided with a feed inlet positioned at the lower side of the grading wheel, the sealing plate is also provided with a discharge hole, the upper surface of the sealing plate is fixedly provided with a discharging barrel, the discharging barrel is provided with a driving device for driving the grading wheel shaft to rotate, the upper discharge port is arranged on the discharge barrel, the lower discharge port positioned on the lower side of the feed port is arranged at the lower end of the outer barrel, the grading wheel comprises an upper wheel ring and a lower wheel ring, blades are fixedly arranged between the upper wheel ring and the lower wheel ring, and a compressed air sealing device is arranged between the upper surface of the upper wheel ring and the sealing plate.

As a preferable technical scheme, the discharge hole is positioned on the inner side of the upper wheel ring.

As a preferred technical scheme, an inner cylinder body located below the grading wheel is arranged in the outer cylinder body, the feed inlet is located on the side of the inner cylinder body, an upper cone is arranged at the upper end of the inner cylinder body, a lower cone is arranged at the lower end of the inner cylinder body, and the taper of the upper cone is smaller than that of the lower cone.

As the preferred technical scheme, the compressed air sealing device is including establishing the closing plate with go up annular seal groove between the rim and being located the sealing ring in the annular seal groove, the compressed air sealing device is still including establishing compressed air inlet on the closing plate, the compressed air inlet with go up the rim with clearance between the closing plate communicates each other, the compressed air inlet is located annular seal groove with the outside of sealing ring.

As a preferable technical scheme, a compressed air inlet housing is fixedly mounted on the upper surface of the sealing plate, and the compressed air inlet housing covers the compressed air inlet hole.

As the preferred technical scheme, the lower fixed surface of closing plate installs annular casing, annular casing's upper surface is equipped with annular opening, annular casing with closing plate sealing connection, the compressed air inlet hole warp annular opening with annular casing intercommunication, a plurality of compressed air ventholes have been seted up to annular casing's bottom, the compressed air venthole with go up the rim of a wheel with clearance between annular casing's the bottom surface communicates each other, annular seal groove and sealing ring are established go up the upper surface of rim of a wheel with between the annular casing, the compressed air venthole is located the outside of sealing ring.

Owing to adopted above-mentioned technical scheme, a multistage grading plant, including draught fan and two at least graders, the grader includes feed inlet, top discharge gate and bottom discharge gate, is located the low reaches the feed inlet of grader with be located the adjacent on upper reaches the top discharge gate of grader communicates each other, draught fan and end the top discharge gate of grader links to each other, the draught fan with be located terminally be equipped with dust collector between the grader. The method is realized by multiple and multistage fine grading by adopting a multistage grading process. The artificial graphite powder classifying device is formed by connecting a plurality of classifiers and can simultaneously classify two sections with different particle sizes. Nearly all qualified finished products are effectively captured in the grading process, the materials are guaranteed not to be wasted basically, the product preparation rate and the finished product rate are greatly improved, the grading precision and the grading efficiency are high, the high-quality grain grading device has a good and stable physical form and high grain size distribution concentration, the content of target grains can be effectively guaranteed, the existence of large grains is avoided, and the quality of finished products is improved; but also at least two different particle sizes of the material can be produced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a classifier in an embodiment of the present invention.

FIG. 3 is an enlarged view of a portion of FIG. 2 at I;

fig. 4 is a partial enlarged view at II in fig. 3.

Detailed Description

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a multistage grading plant, includes draught fan I and two at least graders, the grader includes feed inlet 4, top discharge mouth 5 and bottom discharge mouth 8, is located the low reaches the feed inlet 4 of grader with be located the upper reaches adjacent top discharge mouth 5 of grader communicates each other, draught fan I and terminal the top discharge mouth of grader links to each other, draught fan I with be located the end be equipped with dust collector II between the grader. The artificial graphite powder classifying device is formed by connecting a plurality of classifiers and can simultaneously classify two sections with different particle sizes. Nearly all qualified finished products are effectively captured in the grading process, the materials are guaranteed not to be wasted basically, the product preparation rate and the finished product rate are greatly improved, the grading precision and the grading efficiency are high, the high-quality grain grading device has a good and stable physical form and high grain size distribution concentration, the content of target grains can be effectively guaranteed, the existence of large grains is avoided, and the quality of finished products is improved; but also at least two different particle sizes of the material can be produced.

Two classifiers are adopted in the embodiment, the first-stage classifier III and the second-stage classifier IV form a classifier series system, and the artificial graphite powder in two different particle size sections can be simultaneously sorted. For example, the classification of 5 micron and 10 micron artificial graphite is as follows: grading for the first time: classifying a 10 micron product by using a first-stage classifier III, and collecting the 10 micron product from a lower discharge port of the first-stage classifier; and (3) second grading: classifying a 5 micron product by using a second-stage classifier IV, and collecting the 5 micron product from a lower discharge port of the second-stage classifier IV; the fine material is finally collected by a dust removal device for other uses.

The feed inlet of the classifier at the head end is connected to the upper discharge hole of the pretreatment classifier. The pretreatment classifier separates out powder with a granularity larger than a target granularity section so as to select powder with a granularity smaller than or equal to the target granularity section, in the embodiment, the pretreatment classifier separates out products with a granularity smaller than or equal to 10 micrometers, the products enter a feed inlet of the classifier positioned at the head end, then the products with the granularity of 10 micrometers are screened out through the first-stage classifier, and the products with the granularity of 5 micrometers are classified through the second-stage classifier.

The classifier comprises an outer barrel body 1 which is vertically arranged, a sealing plate 2 is fixedly installed at the upper end of the outer barrel body 1, a classifying wheel shaft 3 is rotatably installed on the sealing plate 2, the lower end of the classifying wheel shaft 3 extends into the outer barrel body 1 and is fixedly provided with a classifying wheel 23, a feed inlet 4 which is positioned at the lower side of the classifying wheel 3 is arranged on the outer barrel body 1, a discharge hole 5 is further arranged on the sealing plate 2, a discharge barrel 6 is fixedly installed on the upper surface of the sealing plate 2, a driving device which drives the classifying wheel shaft to rotate is installed on the discharge barrel 6, the driving device comprises a driving motor 24, an upper discharge port 7 is arranged on the discharge barrel, a lower discharge port 8 which is positioned at the lower side of the feed inlet is arranged at the lower end of the outer barrel body 1, the classifying wheel comprises an upper wheel ring 9 and a lower wheel ring, and a blade 10 is fixedly installed between the upper wheel ring 9 and the lower wheel ring, the discharge hole 5 is positioned on the inner side of the upper wheel ring 9, and a compressed air sealing device is arranged between the upper surface of the upper wheel ring 9 and the sealing plate. Compressed air sealing device makes compressed air can get into the closing plate and go up the clearance between the wheel ring, has avoided the large granule to get into out the feed cylinder, has improved classification efficiency. The structure of the pretreatment grader is the same as that of the grader.

The outer barrel is internally provided with an inner barrel 16 positioned below the grading wheel, the feed inlet is positioned on the side of the inner barrel, the upper end of the inner barrel is provided with an upper cone 17, the lower end of the inner barrel is provided with a lower cone 18, and the taper of the upper cone is smaller than that of the lower cone.

The compressed air sealing device is including establishing closing plate 2 with go up annular seal groove 19 between the rim 9 and being located sealing ring 11 in the annular seal groove, compressed air sealing device is still including establishing compressed air inlet port 12 on the closing plate, compressed air inlet port 12 with go up rim 9 with clearance between the closing plate 2 communicates each other, the compressed air inlet port is located annular seal groove with the outside of sealing ring. The sealing ring and the sealing groove are arranged to play a role in sealing, and meanwhile, compressed air is blown outwards through the sealing ring and the sealing groove, so that large particles are prevented from entering the sealing ring.

And a compressed air inlet shell 13 is fixedly arranged on the upper surface of the sealing plate, and covers the compressed air inlet hole.

In order to improve the effect of stopping the large granule and getting into out the feed cylinder, the lower fixed surface of closing plate 2 installs annular casing 14, annular casing 14's upper surface is equipped with annular opening, annular casing 14 with closing plate 2 sealing connection, compressed air inlet 12 warp annular opening with annular casing 14 intercommunication, a plurality of compressed air ventholes 15 have been seted up to annular casing 14's bottom, compressed air venthole 15 with go up wheel ring 9 with clearance between the bottom surface of annular casing 14 communicates each other, annular seal groove 10 and sealing ring 11 are established go up the upper surface of wheel ring 9 with between the annular casing 14. The compressed air inlet hole is communicated with the gap between the upper wheel ring 9 and the bottom surface of the annular shell 14 through the annular shell inner cavity and the compressed air outlet hole.

The compressed air outlet hole 15 is located outside the sealing ring. Large particles are prevented from entering between the sealing ring and the sealing groove.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a multistage grading plant, its characterized in that, includes draught fan and two at least graders, the grader includes feed inlet, top discharge gate and bottom discharge gate, is located the low reaches the feed inlet of grader with be located the adjacent on upper reaches the top discharge gate of grader communicates each other, draught fan and end the top discharge gate of grader links to each other, the draught fan with be located the end be equipped with dust collector between the grader.

2. The multi-stage classifier as claimed in claim 1, wherein the feed inlet of the classifier at the head end is connected to the top discharge port of the pre-treatment classifier.

3. The multi-stage classifier of claim 1, wherein the classifier includes a vertically disposed outer cylinder, a sealing plate is fixedly arranged at the upper end of the outer cylinder body, a grading wheel shaft is rotatably arranged on the sealing plate, the lower end of the grading wheel shaft extends into the outer cylinder body and is fixedly provided with a grading wheel, the outer cylinder body is provided with a feed inlet positioned at the lower side of the grading wheel, the sealing plate is also provided with a discharge hole, the upper surface of the sealing plate is fixedly provided with a discharge barrel, the discharging barrel is provided with a driving device for driving the grading wheel shaft to rotate, the discharging barrel is provided with the upper discharging hole, the lower end of the outer cylinder body is provided with the lower discharge hole positioned on the lower side of the feed inlet, the grading wheel comprises an upper wheel ring and a lower wheel ring, the blade is fixedly installed between the upper wheel ring and the lower wheel ring, and a compressed air sealing device is arranged between the upper surface of the upper wheel ring and the sealing plate.

4. The multi-stage classifier of claim 3 wherein the discharge opening is located inboard of the upper wheel ring.

5. The multi-stage classifier as claimed in claim 3, wherein said outer cylinder has an inner cylinder located below said classifying wheel, said feed inlet is located at a side of said inner cylinder, an upper cone is provided at an upper end of said inner cylinder, a lower cone is provided at a lower end of said inner cylinder, and a taper of said upper cone is smaller than a taper of said lower cone.

6. The multistage classifier of claim 3, wherein said compressed air sealing means includes an annular sealing groove provided between said sealing plate and said upper wheel ring and a sealing ring provided in said annular sealing groove, said compressed air sealing means further including a compressed air inlet hole provided in said sealing plate, said compressed air inlet hole communicating with a gap between said upper wheel ring and said sealing plate, said compressed air inlet hole being provided outside said annular sealing groove and said sealing ring.

7. The multistage classifier of claim 6, wherein a compressed air inlet housing is fixedly mounted to an upper surface of said sealing plate, said compressed air inlet housing covering said compressed air inlet aperture.

8. The multistage classifier as claimed in claim 7, wherein an annular housing is fixedly mounted on a lower surface of the sealing plate, an annular opening is formed in an upper surface of the annular housing, the annular housing is sealingly connected to the sealing plate, the compressed air inlet hole is communicated with the annular housing through the annular opening, a plurality of compressed air outlet holes are formed in a bottom of the annular housing, the compressed air outlet holes are communicated with a gap between the upper wheel ring and a bottom surface of the annular housing, the annular sealing groove and the sealing ring are provided between an upper surface of the upper wheel ring and the annular housing, and the compressed air outlet holes are located outside the sealing ring.