CN202377193U - Multi-level classifying machine - Google Patents

Multi-level classifying machine Download PDF

Info

Publication number
CN202377193U
CN202377193U CN2011205598808U CN201120559880U CN202377193U CN 202377193 U CN202377193 U CN 202377193U CN 2011205598808 U CN2011205598808 U CN 2011205598808U CN 201120559880 U CN201120559880 U CN 201120559880U CN 202377193 U CN202377193 U CN 202377193U
Authority
CN
China
Prior art keywords
grader
grading wheel
labyrinth ring
classifying
stage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011205598808U
Other languages
Chinese (zh)
Inventor
王金华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WEIFANG ZHENGYUAN POWDER ENGINEERING EQUIPMENT CO LTD
Original Assignee
WEIFANG ZHENGYUAN POWDER ENGINEERING EQUIPMENT CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WEIFANG ZHENGYUAN POWDER ENGINEERING EQUIPMENT CO LTD filed Critical WEIFANG ZHENGYUAN POWDER ENGINEERING EQUIPMENT CO LTD
Priority to CN2011205598808U priority Critical patent/CN202377193U/en
Application granted granted Critical
Publication of CN202377193U publication Critical patent/CN202377193U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

The utility model discloses a multi-level classifying machine, belonging to the technical field of a classifying machine. The multi-level classifying machine mainly comprises two single-stage classifying machines which are connected in series, wherein each single-stage classifying machine comprises a machine body and a classifying wheel, wherein the machine body is provided with a feed inlet, the classifying wheel is driven by a power device, and is positioned in the machine body, a first labyrinth ring and a second labyrinth ring which are mutually matched are arranged between the classifying wheel and the machine body, the first labyrinth ring is fixedly arranged on the machine body and is provided with a circular groove, the second labyrinth ring is fixedly arranged on the classifying wheel and is provided with a circular convex edge, the machine body is provided with an air feed channel, and the air feed channel is communicated with the circular groove. According to the multi-level classifying machine, the technical problem of sealing between the classifying wheel and the machine body is solved, and the multi-level classifying machine is widely applied to the fine classifying of solid particles.

Description

Multistage grader
Technical field
The utility model relates to a kind of pressed powder grading plant, relates in particular to a kind of multistage grader.
Background technology
Traditional dry type gas flow sizing machine is made up of motor, grading wheel, classification stack shell etc., and it is through the rotating speed of regulating grading wheel and is equipped with the reasonable secondary air intake and realizes the effective classification to material.But there are shortcomings such as treating capacity is little, effectiveness of classification is low, the fine powder recovery rate is low, bulky grain control is not strict in traditional gas flow sizing machine, causes difficulty thereby make businessman to micro mist.
China utility application prospectus CN 21088960Y discloses a kind of multistage centrifugal grader, and this product comprises the grading room housing, and the top of housing is cylinder; The bottom is up big and down small cone, on the top board on top head is installed, and head is by the head outlet that is fixed on the top board; Be placed in the motor of head outlet top, and be made up of the grading wheel of driven by motor, head exports external negative pressure source; Grading wheel is positioned at the grading room of top board below, the cavity of middle part for being communicated with the head outlet through roof hole, and the periphery is a blade spaced apart; The big up and small down truncated cone-shaped of whole gabarit, the bottom connects feed conduit, and the outlet of feed conduit is up; Be positioned near the centre, bottom, the bottom of bottom is connected with the feed back pipe.This multistage centrifugal grader can improve shortcomings such as the fine powder recovery rate is low, bulky grain control is not strict, and still, because interior flow area of grading room and flow are uncontrollable, its discharging fineness, effectiveness of classification and production capacity all are affected.
Especially also there is a technical barrier in traditional grader; That is exactly the sealing problem between grading wheel and the body, is installed in the body owing to grading wheel need rotate, so there is a movable sealing between grading wheel and the body; In industries such as the abrasive material of granularity requirements narrowly distributing, fluorescent material, aluminium powder; Grain graininess is little, very easily leaks out through the gap between grading wheel and the body, causes the waste of environmental pollution and raw material.
The utility model content
The utility model technical problem to be solved is: a kind of multistage grader is provided, to solve the technical problem that seals between effectiveness of classification and grading wheel and the body.
For solving the problems of the technologies described above, the technical scheme of the utility model is: multistage grader, comprise at least two single-stage graders that are cascaded, and described each single-stage grader includes: body, said body is provided with charging aperture; Grading wheel by the power set driving; Said grading wheel is positioned at said body; Be provided with first labyrinth ring and second labyrinth ring that cooperatively interact between said grading wheel and the body; Said first labyrinth ring is fixedly installed on the said body and said first labyrinth ring is provided with annular groove, and said second labyrinth ring is fixedly installed on the said grading wheel and said second labyrinth ring is provided with annular ridge; Said body is provided with inlet channel, and said inlet channel is communicated with said annular groove.
As a kind of improvement, also be provided with an inner barrel in the body of described single-stage grader, said inner barrel is fixedly installed in the inside of said body, and is positioned at said grading wheel below, forms the powder flow channels of annular between said inner barrel and the body.
As further improvement, be cylindric in the middle of the said inner barrel, two ends are cone.
As further improvement, said charging aperture is corresponding with the middle part of said inner barrel.
Improve as another kind; The body of described single-stage grader is provided with the secondary air device; Said secondary air device comprises the orifice plate that is fixedly installed on the body; The outside of said orifice plate is provided with cover plate, and said cover plate is provided with and the corresponding through hole in the hole site of said orifice plate, and said cover plate is connected through securing member with orifice plate.
Improve as another kind, be provided with elastic dowel pin shaft coupling between the power output shaft of said power set and the main shaft of grading wheel.
Improve as another kind, the blade surface of said grading wheel is provided with carburized layer.
Improve as another kind, the body of described single-stage grader is provided with inspection door, and said inspection door is corresponding with the position of grading wheel.
Adopted technique scheme; The beneficial effect of the utility model is: owing to designed at least two single-stage graders that are cascaded; Each single-stage grader all has independent power set to drive; Therefore can adjust the effectiveness of classification of each single-stage grader, to obtain narrow particle size distribution, micro mist that effectiveness of classification is high; Again owing to be provided with first labyrinth ring and second labyrinth ring that cooperatively interacts between grading wheel and the body; Adopt the labyrinth seal mode between first labyrinth ring and second labyrinth ring, and designed inlet channel and be communicated with the annular groove on first labyrinth ring, make under the grading room suction function; Just can produce the natural wind that flows by in the export-oriented grading room of body in the inlet channel; Both stop bulky grain and got into grading room, realized self-priming hermetic seal again, solved the movable sealing problem of grading wheel and body.
Because the body of single-stage grader is provided with the secondary air device, through rotating the angle between adjustment cover plate and the orifice plate, the hole that can cover or open varying number; Obtain different intakes; And this air intake adopts natural wind fully, is different from traditional power air intake, has reduced energy resource consumption.
Owing to be provided with elastic dowel pin shaft coupling between the power output shaft of power set and the main shaft of grading wheel, good to neutrality, easy installation and removal is fit to high rotating speed operation.
Because the blade surface of grading wheel is provided with carburized layer, has improved the hardness and the rigidity of blade, blade is indeformable when having guaranteed the high rotating speed of grading wheel, has prolonged the service life of grading wheel.
Owing to be provided with inner barrel in the body, form the powder flow channels of annular between inner barrel and the body, make interior flow area of grading room and flow be effectively controlled, increased air-flow velocity, make material clear and definite in the graded region layering; Charging aperture is with respect to said inner barrel middle part, and material is impacted diffusion by cylindrical shell when making charging, more helps material rising layering.
In a word; Owing to adopt technique scheme; Make that the interior flow area of grading room and the flow of the multistage grader of the utility model are controlled, and solved the movable sealing problem between grading wheel and the body effectively, improved discharging fineness, effectiveness of classification; Reduce energy consumption, improved production capacity.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment single-stage grader;
Fig. 2 is the partial enlarged drawing of A portion among Fig. 1;
Fig. 3 is the partial enlarged drawing of B portion among Fig. 1;
Fig. 4 is the partial enlarged drawing of C portion among Fig. 1;
Fig. 5 is the operation principle sketch map of the utility model embodiment;
Among the figure: 1, variable-frequency motor, 2, body, 3, grading wheel, 4, elastic dowel pin shaft coupling, 5, discharging opening; 6, inner barrel, 7, charging aperture, 8, the secondary air device, 9, first labyrinth ring, 10, second labyrinth ring; 11, inlet channel, 12, holding screw, 13, orifice plate, 14, cover plate, 15, first order single-stage grader; 16, second level single-stage grader, 17, cyclone collector, 18, sack cleaner, 19, air-introduced machine.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Shown in Fig. 1 and Fig. 2 were common, a kind of multistage grader comprised at least two single-stage graders that are cascaded; The single-stage grader can be provided with two and be cascaded, and also can be provided with three and be cascaded, certainly; Under the prerequisite that pressure allows; More a plurality of single-stage graders also can be set be cascaded, described each single-stage grader includes: body 2, said body 2 are provided with charging aperture 7 and discharging opening 5; Grading wheel 3 by the power set driving; Said power set are preferably variable-frequency motor 1; Said grading wheel 3 is positioned at said body 2; Be provided with first labyrinth ring 9 and second labyrinth ring 10 that cooperatively interact between said grading wheel 3 and the body 2, said first labyrinth ring 9 is fixedly installed on the said body 2 and said first labyrinth ring 9 is provided with annular groove, and said second labyrinth ring 10 is fixedly installed on the said grading wheel 3 and said second labyrinth ring 10 is provided with annular ridge; Said body 2 is provided with inlet channel 11, and said inlet channel 11 is communicated with said annular groove, and annular groove is connected with body 2 outside atmosphere.
Also be provided with an inner barrel 6 in the body 2 of described single-stage grader; Said inner barrel 6 is fixedly installed in the inside of said body 2; And being positioned at said grading wheel 3 belows, forming the powder flow channels of annular between said inner barrel 6 and the body 2, is cylindric in the middle of the said inner barrel 6; Two ends are cone, and said charging aperture 7 is corresponding with the middle part of said inner barrel 6.
For the case hardness of the blade that improves grading wheel 3, prolong the service life of grading wheel 3, the blade surface of said grading wheel 3 is provided with carburized layer.
For ease of the operating position of inspection grading wheel 3, the body 2 of described single-stage grader is provided with inspection door, and said inspection door is corresponding with the position of grading wheel 3.
Shown in Fig. 1 and Fig. 3 are common, be provided with elastic dowel pin shaft coupling 4 between the main shaft of the power output shaft of said variable-frequency motor 1 and grading wheel 3, good to neutrality, easy installation and removal, suitable high rotating speed operation.
Shown in Fig. 1 and Fig. 4 are common; The body 2 of described single-stage grader is provided with secondary air device 8; Said secondary air device 8 comprises the orifice plate 13 that is fixedly installed on the body 2; The outside of said orifice plate 13 is provided with cover plate 14, and said cover plate 14 is provided with and the corresponding through hole in the hole site of said orifice plate 13, and said cover plate 14 and orifice plate 13 are connected through securing member; Common said securing member is selected holding screw 12 for use, through shutoff or the hole of opening varying number on the orifice plate 13 to obtain different intakes.
Its course of work is following:
Shown in Fig. 1 and Fig. 5 were common, material got into first order single-stage grader 15 by charging aperture, runs on inner barrel 6 barrels; Impacted diffusion, under the effect of secondary air device 8 ascending airs, passed through the annular powder flow channels that forms between inner barrel 6 and the body 2 fast; In graded region, form clear and definite material diversion layer, first order variable-frequency motor drives grading wheel 3 and rotates, and the powder that makes the qualified fineness that meets the 15 classification requirements of first order single-stage grader is through getting into the charging aperture of second level single-stage grader 16 behind the discharging opening; The second level variable-frequency motor rotating speed of second level single-stage grader 16 wants high than first order variable-frequency motor rotating speed; Resulting raw meal particle size is refinement more, and fine powder gets into cyclone collector 17, and a small amount of micro mist gets into sack cleaner 18 and captures; Purified gas is discharged by air-introduced machine 19; Meal is fallen the bottom along body 2 and is collected because gravity sends back to grading room once more with other impact energy effects, is discharged by device for discharging.
The utility model reasonable in design, automaticity is high, is widely used in various milling equipments such as ball mill, Raymond mill, impact grinding, airflow milling and forms closed circuit or open system.
The utility model is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within the protection domain of the utility model.

Claims (8)

1. multistage grader is characterized in that, comprises at least two single-stage graders that are cascaded, and described each single-stage grader includes:
Body, said body is provided with charging aperture;
Grading wheel by the power set driving; Said grading wheel is positioned at said body; Be provided with first labyrinth ring and second labyrinth ring that cooperatively interact between said grading wheel and the body; Said first labyrinth ring is fixedly installed on the said body and said first labyrinth ring is provided with annular groove, and said second labyrinth ring is fixedly installed on the said grading wheel and said second labyrinth ring is provided with annular ridge; Said body is provided with inlet channel, and said inlet channel is communicated with said annular groove.
2. multistage grader as claimed in claim 1; It is characterized in that: also be provided with an inner barrel in the body of described single-stage grader; Said inner barrel is fixedly installed in the inside of said body; And be positioned at said grading wheel below, form the powder flow channels of annular between said inner barrel and the body.
3. multistage grader as claimed in claim 2 is characterized in that: for cylindric, two ends are cone in the middle of the said inner barrel.
4. multistage grader as claimed in claim 3 is characterized in that: said charging aperture is corresponding with the middle part of said inner barrel.
5. multistage grader as claimed in claim 1; It is characterized in that: the body of described single-stage grader is provided with the secondary air device; Said secondary air device comprises the orifice plate that is fixedly installed on the body; The outside of said orifice plate is provided with cover plate, and said cover plate is provided with and the corresponding through hole in the hole site of said orifice plate, and said cover plate is connected through securing member with orifice plate.
6. multistage grader as claimed in claim 1 is characterized in that: be provided with elastic dowel pin shaft coupling between the power output shaft of said power set and the main shaft of grading wheel.
7. multistage grader as claimed in claim 1 is characterized in that: the blade surface of said grading wheel is provided with carburized layer.
8. multistage grader as claimed in claim 1 is characterized in that: the body of described single-stage grader is provided with inspection door, and said inspection door is corresponding with the position of grading wheel.
CN2011205598808U 2011-12-28 2011-12-28 Multi-level classifying machine Expired - Lifetime CN202377193U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205598808U CN202377193U (en) 2011-12-28 2011-12-28 Multi-level classifying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205598808U CN202377193U (en) 2011-12-28 2011-12-28 Multi-level classifying machine

Publications (1)

Publication Number Publication Date
CN202377193U true CN202377193U (en) 2012-08-15

Family

ID=46625714

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011205598808U Expired - Lifetime CN202377193U (en) 2011-12-28 2011-12-28 Multi-level classifying machine

Country Status (1)

Country Link
CN (1) CN202377193U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102580928A (en) * 2012-02-28 2012-07-18 潍坊汇成新材料科技有限公司 Method for classifying silicon carbide micro powder and classifying equipment of method
CN104226594A (en) * 2013-06-08 2014-12-24 昆山市密友装备制造有限责任公司 Dust seal structure of grading wheel of jet mill
CN106423552A (en) * 2016-09-07 2017-02-22 重庆市九瑞粉末冶金有限责任公司 Ring-shaped iron powder particle sorting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102580928A (en) * 2012-02-28 2012-07-18 潍坊汇成新材料科技有限公司 Method for classifying silicon carbide micro powder and classifying equipment of method
CN104226594A (en) * 2013-06-08 2014-12-24 昆山市密友装备制造有限责任公司 Dust seal structure of grading wheel of jet mill
CN104226594B (en) * 2013-06-08 2016-06-22 昆山市密友装备制造有限责任公司 Jet mill grading wheel dust seals structure
CN106423552A (en) * 2016-09-07 2017-02-22 重庆市九瑞粉末冶金有限责任公司 Ring-shaped iron powder particle sorting device

Similar Documents

Publication Publication Date Title
CN202438467U (en) Aluminum powder grading production line
CN202778960U (en) Vertical purification efficient airflow grader
CN102580928A (en) Method for classifying silicon carbide micro powder and classifying equipment of method
CN204933651U (en) Novel vertical mill device
CN204170771U (en) Oyster shell whiting grinding grading plant
CN201516416U (en) Inverted airflow seal device used for airflow classer
CN202377193U (en) Multi-level classifying machine
CN204933577U (en) Vertical Mill device
CN203304085U (en) Isolation device in cyclone dust collector
CN102513193A (en) Chinese herbal medicine pulverizer
CN204892373U (en) High dispersivity vortex selection powder machine
CN202377192U (en) Self-split-flow classifying machine
CN203842820U (en) Vertical multi-rotor superfine micro-powder grader
CN202438466U (en) Counter-current classifier
CN102513295A (en) Self flow division type grading machine
CN2759604Y (en) Highly effective centrifugal separator
CN103785614A (en) Multistage powder separating machine for multilayer stacking material distribution gas inlet fluidization
CN203526068U (en) Novel powder concentrator
CN201389523Y (en) High-efficiency rotor-type carbon forming powder grader
CN203253277U (en) Online filter screen rotary dust collection device with flow aiding fan
CN102580924A (en) Countercurrent classifier
CN2602843Y (en) High-efficient rotor type coal powder grading machine
CN207667582U (en) One kind is unpowered, and powder equipment is removed in mixing
CN202070424U (en) Vortex combination powder separator
CN201728145U (en) Vertical grinder high-fineness dynamic-static combined separator device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120815