CN204503220U - A kind of raymond mill - Google Patents

A kind of raymond mill Download PDF

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Publication number
CN204503220U
CN204503220U CN201520166607.7U CN201520166607U CN204503220U CN 204503220 U CN204503220 U CN 204503220U CN 201520166607 U CN201520166607 U CN 201520166607U CN 204503220 U CN204503220 U CN 204503220U
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CN
China
Prior art keywords
grinding roller
line
shell
cylindrical shell
bull ring
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Expired - Fee Related
Application number
CN201520166607.7U
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Chinese (zh)
Inventor
吕勇
李文泉
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Weifang Jinghua Powder Engineering Equipment Coltd
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Weifang Jinghua Powder Engineering Equipment Coltd
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Priority to CN201520166607.7U priority Critical patent/CN204503220U/en
Application granted granted Critical
Publication of CN204503220U publication Critical patent/CN204503220U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of raymond mill, comprise support, the end face of support is connected with cylindrical shell, support is built with bull ring, support is rotatably connected to the main shaft stretched in cylindrical shell, main shaft is connected with plum blossom frame, plum blossom frame is hinged with many cover grinding roller assemblies, described grinding roller assembly comprises the grinding roller that hinge is contained in the shaft of grinding roller on plum blossom frame and is contained on shaft of grinding roller, grader is equipped with at the top of cylindrical shell, the grading rotor of grader is positioned at cylinder lumen top, in the longitudinal section of described bull ring, the wall profile line of inner wall surface thereof is the camber line of evagination, in the longitudinal section of institute's grinding roller, the lateral profiles line of its outside portion is the camber line of evagination.The product granularity that this machine is produced is comparatively thin, is applicable to the production of super fine.

Description

A kind of raymond mill
Technical field
The utility model relates to a kind of raymond mill.
Background technology
Raymond mill is nonmetallic mineral processed and applied one of equipment the most widely, the basic structure of existing raymond mill is as follows: comprise support, the end face of support is connected with cylindrical shell, support is built with bull ring, support is rotatably connected to the main shaft stretched in cylindrical shell, main shaft is connected with plum blossom frame, hinge dress many covers grinding roller assembly on plum blossom frame, described grinding roller assembly comprises the grinding roller that hinge is contained in the shaft of grinding roller on plum blossom frame and is contained on shaft of grinding roller, grader is equipped with at the top of cylindrical shell, and the grading rotor of grader is positioned at cylinder lumen top.
Mainly there is following defect in the existing raymond mill of said structure: one is mostly crushing auxiliary (being made up of grinding roller and the bull ring) profile of raymond mill is the face of cylinder or taper seat, the main centrifugal force attrition crushing material produced by grinding roller revolution, its powder particles produced is comparatively large, and the shortcoming being not suitable for producing super fine is also more and more obvious; Two is that raymond mill is because its disintegrating area is to the connector drum excessive height of graded region, material under air-flow carries by disintegrating area to graded region apart from long, the fine powder causing part qualified can not arrive graded region and namely fall after rise to disintegrating area, is excessively pulverized, causes energy waste; And cylindrical shell height is then many with steel, added cost.
Summary of the invention
One of the technical problems to be solved in the utility model is for above-mentioned defect one, provides a kind of institute product material granularity less, is applicable to the raymond mill that super fine is produced; The technical problems to be solved in the utility model two for above-mentioned defect two, provide a kind of material not easily excessively to be pulverized, and economize energy and the low raymond mill of cost of manufacture.。
For solving above-mentioned first technical problem, the utility model provides a kind of raymond mill of following structure, comprise support, the end face of support is connected with cylindrical shell, support is built with bull ring, support is rotatably connected to the main shaft stretched in cylindrical shell, main shaft is connected with plum blossom frame, plum blossom frame is hinged with many cover grinding roller assemblies, described grinding roller assembly comprises the grinding roller that hinge is contained in the shaft of grinding roller on plum blossom frame and is contained on shaft of grinding roller, grader is equipped with at the top of cylindrical shell, the grading rotor of grader is positioned at cylinder lumen top, its design feature is: in the longitudinal section of described bull ring, the wall profile line of inner wall surface thereof is the camber line of evagination, in the longitudinal section of described grinding roller, the lateral profiles line of its outside portion is the camber line of evagination.
The raymond mill of said structure, because in the longitudinal section of bull ring, the wall profile line of inner wall surface thereof is the camber line of evagination, the camber line of this evagination rotates can go out ball annuli arrangement by envelope around bull ring axis, therefore the internal face of bull ring is ball face, and the lateral profiles line of its outside portion is the camber line of evagination in the longitudinal section of described grinding roller, the surface of revolution of grinding roller is equally also made to be ball face.There is the bull ring of ball annuli arrangement and the crushing auxiliary of grinding roller formation, not only be squeezed when material can be made to be broken power, also can be subject to the grinding forces produced because each point linear velocity on ball face is different, the granularity of product can be made greatly to reduce, the fineness of product is highly improved, is therefore applicable to super fine and produces.Above-mentioned crushing auxiliary has ball annuli arrangement because of it, and the contact area of bull ring and grinding roller increases thus increases pulverizing area, can improve crush efficiency and increase yield.
Described wall profile curvature of a curve is designed to be less than lateral profiles curvature of a curve; One is to make material more easily enter between crushing auxiliary, and two is to increase distance of milling, to obtain better milling efficiency.
In each point on described wall profile line, apart from bull ring axial line farthest, the two-end-point of wall profile line is equal and nearest apart from bull ring axial line apart from the distance of bull ring axial line for the mid point of wall profile line; In each point on described lateral profiles line, apart from grinding roller axial line farthest, the two-end-point of lateral profiles line is equal and nearest apart from grinding roller axial line apart from the distance of grinding roller axial line for the mid point of lateral profiles line.
In order to solve above-mentioned second technical problem, the basis of technique scheme is done following improvement: described cylindrical shell is two body structures be made up of upper shell and lower shell, upper shell and lower shell is dismountable links together, the height of described cylindrical shell arranges the design condition that will meet H < L, H is the distance between the upper surface of bull ring and grading rotor end face, and L is the length of grinding roller assembly.
During making, the height design condition of H < L being limited cylindrical shell is arranged, greatly can reduce the height of cylindrical shell, thus the distance reduced between disintegrating area to graded region, the qualified fine powder produced in disintegrating area is made to separate collection in time, decrease and fall overground phenomenon, therefore increase yield after rise, save the energy; And due to the shortening of cylindrical shell, save steel, thus reduce cost of manufacture; In addition, cylindrical shell is set to two body structures be made up of upper shell and lower shell, can convenient for assembly and maintenance.
In sum, the utility model has the advantage of: 1. products obtained therefrom granularity is comparatively thin, be applicable to the production of super fine; 2. crush efficiency is high, can improve output, 3. can fall overground phenomenon after rise by effective less powder; be beneficial to economize energy, 4. keep in repair, easy to assembly, cost of manufacture is low.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A portion enlarged drawing of Fig. 1.
Detailed description of the invention
As shown in Figure 1, raymond mill comprises support 1, the end face of support 1 is connected with cylindrical shell 2, support 1 is built with bull ring 3, support 1 is rotatably connected to the main shaft 4 stretched in cylindrical shell 2, main shaft 4 is driven by mair motor 13, main shaft 4 is connected with plum blossom frame 5, plum blossom frame 5 top is hinged with many cover grinding roller assemblies, and described grinding roller assembly comprises the grinding roller 7 that hinge is contained in the shaft of grinding roller 6 on plum blossom frame 5 and is contained on shaft of grinding roller 6; Be connected with multiple perching knife 12 for scooping up material bottom plum blossom frame 5, the quantity of perching knife 12 is identical with the quantity of described grinding roller assembly.Support 1 is provided with the fresh air inlet 14 of air intake in machine, and cylindrical shell 2 is provided with feed hopper 15, feed hopper 15 is equipped with and closes air-valve 16.The top of cylindrical shell 2 is provided with grader 11, and the grading rotor 8 of grader 11 is positioned at cylindrical shell 2 inner cavity top.
The said structure of raymond mill is prior art, and the utility model is the improvement made on the basis of existing technology, and also comprise above-mentioned technical characteristic, improvements have two.
First improvement is: as depicted in figs. 1 and 2, in the longitudinal section of described bull ring 3, the wall profile line 9 of inner wall surface thereof is the camber line of evagination, in each point on wall profile line 9, the mid point of wall profile line 9 apart from bull ring 3 axial line farthest, the two-end-point of wall profile line 9 is equal apart from the distance of bull ring 3 axial line, and the two-end-point of wall profile line 9 is nearest apart from bull ring 3 axial line.Wall profile line 9 rotates can go out a ball face by envelope around the axial line of bull ring 3, and that is the internal face of bull ring 3 is ball face.In the longitudinal section of described grinding roller 7, the lateral profiles line 10 of its outside portion is the camber line of evagination, in each point on described lateral profiles line 10, the mid point of lateral profiles line 10 apart from grinding roller 7 axial line farthest, the two-end-point of lateral profiles line 10 is equal apart from the distance of grinding roller 7 axial line, and the two-end-point of lateral profiles line 10 is nearest apart from grinding roller 7 axial line.Equally, lateral profiles line 10 also can go out a ball face by envelope around the axial line rotation of grinding roller 7, and therefore the surface of revolution of grinding roller 7 is also ball face.The curvature of above-mentioned wall profile line 9 is less than the curvature of lateral profiles line 10.The longitudinal section of above-mentioned bull ring 3 and the longitudinal section of grinding roller 7 refer to along the orthographic projection view after the axial line cutting of bull ring 3 and grinding roller 7.Outer in the camber line of above-mentioned evagination is relatively respective axial line, and the direction of abaxial line is outward, in the direction of axial line is.
Second point improves: as shown in Figure 1, described cylindrical shell 2 is two body structures be made up of upper shell 21 and lower shell 22, upper shell 21 and lower shell 22 is dismountable links together, together with upper shell 21 is bolted with lower shell 22 in the present embodiment; The height of described cylindrical shell 2 arranges the design condition that will meet H < L, and H is the distance between the upper surface of bull ring 3 and grading rotor 8 lower surface, and L is the length of grinding roller assembly.Described feed hopper 15 is located on lower shell 22.
The operation principle of the raymond mill of said structure is: material is added by feed hopper 15, Raymond mill inside is entered through closing air-valve 16, motor 13 drive shaft 4 is rotated, and grinding roller 7 does revolution motion in bull ring 3 track, and the extruding of the centrifugal force of generation, milling is scooped up to the material in bull ring 3 by perching knife 12.Material is crushed into fine powder, fine powder goes upward to graded region under the drive of air-flow being entered disintegrating area by fresh air inlet 14, in graded region, qualified fine powder enters grading rotor 8 inside and flow to later collection equipment through classification cylindrical shell and collects, and defective material then falls rear continuation and pulverized.

Claims (5)

1. a raymond mill, comprise support (1), the end face of support (1) is connected with cylindrical shell (2), support (1) is built with bull ring (3), support (1) is rotatably connected to the main shaft (4) stretched in cylindrical shell (2), main shaft (4) is connected with plum blossom frame (5), plum blossom frame (5) is hinged with many cover grinding roller assemblies, described grinding roller assembly comprises the grinding roller (7) that hinge is contained in the shaft of grinding roller (6) on plum blossom frame (5) and is contained on shaft of grinding roller (6), grader is equipped with at the top of cylindrical shell (2), the grading rotor (8) of grader is positioned at cylindrical shell (2) inner cavity top, it is characterized in that: the camber line that in the longitudinal section of described bull ring (3), the wall profile line (9) of inner wall surface thereof is evagination, the camber line that in the longitudinal section of described grinding roller (7), the lateral profiles line (10) of its outside portion is evagination.
2. raymond mill according to claim 1, is characterized in that: described wall profile curvature of a curve is less than lateral profiles curvature of a curve.
3. raymond mill according to claim 1 and 2, it is characterized in that in each point on described wall profile line (9), apart from bull ring (3) axial line farthest, the two-end-point of wall profile line (9) is equal and nearest apart from bull ring (3) axial line apart from the distance of bull ring (3) axial line for the mid point of wall profile line (9); In each point on described lateral profiles line (10), apart from grinding roller (7) axial line farthest, the two-end-point of lateral profiles line (10) is equal and nearest apart from grinding roller (7) axial line apart from the distance of grinding roller (7) axial line for the mid point of lateral profiles line (10).
4. raymond mill according to claim 1 and 2, it is characterized in that: described cylindrical shell (2) is two body structures be made up of upper shell (21) and lower shell (22), upper shell (21) and lower shell (22) is dismountable links together, the height of described cylindrical shell (2) arranges the design condition that will meet H < L, H is the distance between the upper surface of bull ring (3) and grading rotor (8) lower surface, and L is the length of grinding roller assembly.
5. raymond mill according to claim 3, it is characterized in that: described cylindrical shell (2) is two body structures be made up of upper shell (21) and lower shell (22), upper shell (21) and lower shell (22) is dismountable links together, the height of described cylindrical shell (2) arranges the design condition that will meet H < L, H is the distance between the upper surface of bull ring (3) and grading rotor (8) lower surface, and L is the length of grinding roller assembly.
CN201520166607.7U 2015-03-24 2015-03-24 A kind of raymond mill Expired - Fee Related CN204503220U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520166607.7U CN204503220U (en) 2015-03-24 2015-03-24 A kind of raymond mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520166607.7U CN204503220U (en) 2015-03-24 2015-03-24 A kind of raymond mill

Publications (1)

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CN204503220U true CN204503220U (en) 2015-07-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104668045A (en) * 2015-03-24 2015-06-03 潍坊市精华粉体工程设备有限公司 Raymond mill
CN105057038A (en) * 2015-08-26 2015-11-18 河南维科重工机械有限公司 Combined machine base applied to large Raymond mill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104668045A (en) * 2015-03-24 2015-06-03 潍坊市精华粉体工程设备有限公司 Raymond mill
CN104668045B (en) * 2015-03-24 2017-12-08 山东达利尔重工股份有限公司 A kind of raymond mill
CN105057038A (en) * 2015-08-26 2015-11-18 河南维科重工机械有限公司 Combined machine base applied to large Raymond mill
CN105057038B (en) * 2015-08-26 2017-12-12 河南维科重工机械有限公司 Combination support for large-scale Raymond mill

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150729

Termination date: 20190324