EP0567077B1 - Elément broyeur d'un broyeur giratoire - Google Patents

Elément broyeur d'un broyeur giratoire Download PDF

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Publication number
EP0567077B1
EP0567077B1 EP93106395A EP93106395A EP0567077B1 EP 0567077 B1 EP0567077 B1 EP 0567077B1 EP 93106395 A EP93106395 A EP 93106395A EP 93106395 A EP93106395 A EP 93106395A EP 0567077 B1 EP0567077 B1 EP 0567077B1
Authority
EP
European Patent Office
Prior art keywords
crushing
mantle
concave
groove forming
forming members
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
EP93106395A
Other languages
German (de)
English (en)
Other versions
EP0567077A3 (fr
EP0567077A2 (fr
Inventor
Tsukasa Katayama
Shigeto Fukumura
Yorizo Kudo
Masahiko Nishi
Toru Nakanishi
Yoshitaka Sato
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.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
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 Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Publication of EP0567077A2 publication Critical patent/EP0567077A2/fr
Publication of EP0567077A3 publication Critical patent/EP0567077A3/xx
Application granted granted Critical
Publication of EP0567077B1 publication Critical patent/EP0567077B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2/00—Crushing or disintegrating by gyratory or cone crushers
    • B02C2/005—Lining

Definitions

  • This invention relates to a crushing member (toothed plate) according to the pre-characterizing part of each of claims 1,2 and 3.
  • a crushing member of this type is known from EP-A-0 306 023. According to this document, the crushing member is used to crush minerals.
  • the crushing member is made for use in gyrating-type crushers, such as cone crushers, gyratory crushers or others, which include mantles and concaves.
  • a known crushing member of a gyrating-type crusher comprises toothed plate bodies of a mantle and of a concave respectively having continuously undulating convexities and concavities circumferentially formed in the crushing surfaces of the toothed plate bodies of the mantle and the concave, whereby an object to be crushed fed into the crushing chamber of the crusher is crushed in a state where the object is hindered from slipping, for the improvement of the crushing efficiency (See Japanese Patent Publication (KOKOKU) No. 50580/1991).
  • the conventional crushing member of the above-described structure is effective only when the object-to-be-crushed is crushed in a state where the object is hindered from slipping, but sometimes sufficient crushing cannot be obtained unless the directions of the convexities and the concavities are suitable.
  • the crushing effect also decreases with increased abrasion of the toothed plate.
  • GB-A- 1,043,945 discloses a machine for treating and refining pulp, i.e. soft materials.
  • the machine includes a mantle and a concave.
  • the material to be treated in the pulp treating machine is fed to the large diameter end of the mantle and the concave.
  • the object of this invention is to provide a gyrating-type crusher having optimum direction lines of groove forming members disposed on the crushing surface of the toothed plate bodies, and combinations of the direction lines, whereby the crushing achievement in terms of required crushing power, particle sizes of crushed products, crushing efficiency, bites, etc. is optimized, and the drop of the crushing achievement accompanying the abrasion of the toothed plate can be effectively prevented.
  • this invention relates to a crushing member having the features of claim 1, claim 2 and claim 3. It is used in gyrating-type crushers, including a mantle and a concave, the toothed plate comprising a plurality of groove forming members in the shape of a strip circumferentially spaced from each other by a set pitch on crushing surfaces of the mantle and the concave, the groove forming members of the mantle defining a direction line, i.e. a line normal to the groove forming members, forming a direction angle of 45° - 75° with respect to a vertical direction line of the mantle, and the groove forming members defining a direction line normal to a vertical direction line of the concave.
  • the groove forming members of the mantle define a direction line normal to a vertical direction line of the mantle, and the groove forming members of the concave define a direction line forming a direction angle of 45° - 74° with respect to the vertical direction line of the concave.
  • the groove forming members of each of the mantle and the concave define a direction line forming a direction angle of 65° - 90° with respect to the vertical direction line, and the direction lines are intersected by each other at a relative angle of 15° - 45° on the crushing surfaces.
  • the direction angle of the direction line of the mantle is 45° - 75°, and that of the concave is normal (90°). With the direction angles set outside these ranges, the crushing achievement cannot be optimized:
  • the direction angle of the direction line of the mantle is normal, and that of the concave is 45° - 74°: Outside these ranges, the crushing achievement cannot be optimized.
  • These ranges are set in accordance with the first invention, and in comparison with the first invention, the crushing achievement tends to lower but with the above-described disadvantages improved.
  • the direction angles of the directions lines of the mantle and the concave are 65° - 90°, and their relative angle on the crushing surfaces is 15° - 45°. Outside this range, optimum crushing achievement is not available.
  • the third invention is easily adaptable to requirements for desired crushing ability and crushing achievement.
  • FIG. 1 is an explanatory view of direction lines of the groove forming members of the toothed plate body of the mantle of the crushing member for use in gyrating-type crushers according to one embodiment of this invention.
  • FIG. 2 is an explanatory view of direction lines of the concave.
  • FIG. 3 is an explanatory view of direction lines of the mantle and the concave.
  • FIG. 4 is a partial development of the direction lines of the mantle and the concave of FIG. 3, which explains the direction lines.
  • FIG. 5 is a general structural view of the crushing member according to this invention.
  • FIG. 6 is a graph of relationships between the crushing achievement of the crushing member according to this invention, and the direction angles of the mantle.
  • FIG. 7 is a sectional view of a major part of the teeth plate of FIG. 5 along the line A-A.
  • FIG. 8 is an explanatory of a used state of the mantle of FIG. 7.
  • FIG. 1 is a view explaining direction lines of a grooved member of a mantle of the toothed plate according to one embodiment of this invention for use in a gyrating-type crusher.
  • FIG. 2 is a view explaining direction lines of a concave of the crushing member.
  • FIG. 3 is a view explaining the direction lines of the mantle and the concave.
  • FIG. 4 is a partially expanded view of the direction lines of FIG. 3.
  • FIG. 5 is general structural view of the crushing member.
  • FIG. 6 is a graph of the relationships between the crushing achievement of the toothed plate according to this invention, and direction angles of the mantle.
  • FIG. 7 is a sectional view of the toothed plate of FIG. 5 along the line A-A.
  • FIG. 7 is an explanatory view of the toothed plate of FIG. 7 in its used state.
  • the line Z 1 -Z 1 represents the vertical direction line of the mantle 12 and indicates the direction of up-to-down movement of an object-to-be-crushed along the line Z 1 -Z 1 .
  • Reference numeral 17 represents a direction line, and the groove forming members 16 are normal to the vertical direction line Z 1 -Z 1 at a direction angle ⁇ 1 .
  • the direction line 17 is normal to the groove forming members 16.
  • the direction angle ⁇ 1 is roughly divided in three. That is, the direction angle ⁇ 1 indicates a 45° - 75° direction angle.
  • a direction angle ⁇ 1 ' indicates a 90° normal direction angle.
  • a direction angle ⁇ 1 '' indicates a 65° - 90° direction angle.
  • a toothed plate body 20 of a concave 18 there are disposed a plurality of groove forming members 22 spaced circumferentially from each other.
  • the groove forming members 22 may be equidistantly or unequidistantly spaced from each other.
  • the line Z 2 -Z 2 indicates a vertical direction line of the concave 18 and indicates a direction of up-to-down movement of the object-to-be-crushed.
  • Groove forming members 22 are directed at an orientation angle ⁇ 2 with respect to the vertical line Z 2 -Z 2 .
  • the direction line 23 is normal to the groove forming members 22.
  • the direction angle ⁇ 2 is roughly divided in three. That is, the direction angle ⁇ 2 indicates a 90° normal direction angle.
  • the direction angle ⁇ 2 ' indicates a 45° - 75° direction angle.
  • the direction angle ⁇ 2 '' indicates a 65° - 90° direction angle.
  • a gyrating-type crusher 10 the mantle 12 is mounted inside the concave 18 with the tooth plate body 14 of the mantle 12 opposed to the toothed plate body of the concave 18 , and a crushing chamber 24 is defined between the toothed plate bodies 14 and 20.
  • the line M-M indicates the vertical center line of the gyrating-type crusher 10 and is substantially in agreement with the vertical direction line Z 2 -Z 2 of the concave 18.
  • the vertical direction line Z 1 -Z 1 of the mantle 12 is slightly inclined to the vertical center line M-M, and the intersection point between the two lines is represented by (O).
  • the vertical direction line Z 1 -Z 1 of the mantle 12 depicts an eccentric circle around the vertical center line M-M with the intersection point (O) as the vertex.
  • the direction line 17 of the mantle 12 and the direction line 23 of the concave 18 intersect each other at a relative angle ⁇ r of 15° - 45° on their respective crushing surfaces.
  • the vertical direction line Z 1 -Z 1 of the mantle and that Z 2 -Z 2 of the concave are in agreement with each other, and the direction line 17 of the mantle 12 and the that 23 of the concave 18 intersect each other at the relative angle ⁇ r on their respective crushing surfaces.
  • the relative angle ⁇ r is a total of the direction angle ⁇ 1 and the direction angle ⁇ 2 of the concave.
  • This arrangement allows loads from a number of points or in a number of directions, including the internal structure, to act on the respective contact points of the surface of the object to be crushed in the crushing chamber 24.
  • the crushing action can be enhanced.
  • the direction line 17 is defined with respect to the direction angle ⁇ 1 , 45° - 75° of the groove forming members of the mantle 12, and the direction line 23 forms the direction angle ⁇ , which is normal (90°) to the groove forming members 22 of the concave 18.
  • FIG. 6 shows the result of a crushing experiment using the crushing member for use in gyratory-type crushers according to this embodiment.
  • the direction angle ⁇ 2 of the concave which is normal (90°)
  • the direction angle ⁇ 1 of the mantle was changed to give the influence of a crushing load, crushing efficiency, a particle size distribution, a nip angle, etc. on the crushing achievement.
  • the result of this experiment shows that the optimum crushing achievement is obtained in a range where the groove forming members of the mantle has a direction angle of 45° - 75°, and the concave has a normal (90°) direction angle.
  • the mantle 12 has a toothed plate body 14 of a highly abrasion resistant material, e.g, high manganese cast steel containing manganese by 13 weight% or more.
  • the toothed plate body 14 has a plurality of deep grooves 30 formed in the troughs of the undulated outer peripheral surface of the toothed plate body 14, and groove forming members 16 embedded in the deep grooves 30 by casting.
  • Each groove forming memeber 16 has a side surface 28, and the side surfaces 28 may be formed of a low abrasion resistant material, e.g., rolled steel for the general purpose.
  • the crests of the undulated outer peripheral surface of the toothed plate body 14 are formed in edges 26 of curvy section with a required curvature.
  • the edges 26 may have a curved section of an increased curvature to provide crushing surfaces in non-undulated flat outer surfaces.
  • FIG. 8 shows a state in which accompanying a long period of operation time of the gyrating-type crusher, the crushing surfaces are abraded.
  • the edges 26 of the toothed plate body 14 have little abrasion, but the side surfaces 28 of the groove forming members 16 are abraded from the surfaces depicted by the two-dot chain lines to the side surfaces 28a depicted by the solid lines to eventually generate abraded steps E.
  • the structure of this embodiment hinders the above-described abraded steps E from increasing with long time operation of the gyrating-type crusher, so that the abraded steps of a constant size are continuously maintained between the edges 26 and the side surfaces 28a of the groove forming members 16 down to an abrasion limit for the edges 26. Accordingly decreases of the crushing achievement can be prevented, and even if the abrasion of the toothed plate body 14 continues, the gyrating-type crusher can be operated always with the same crushing achievement.
  • Table 1 the operational achievement of the gyrating-type crushers including the crushing member according to this invention is shown in Table 1. As shown in Table 1, it is found that in comparison with the conventional art, this invention exhibits improved crushing achievement in terms of crushing capacity and crushing power consumption.
  • a direction angle ⁇ of the mantle was 70°
  • the direction angle ⁇ of the concave was 90°.
  • directions of direction lines of the groove forming members disposed on the crushing surfaces of the toothed body members, and combinations of the direction lines allow bending forces and shearing forces in addition to compression forces to exert onto an object to be crushed while the object to be crushed is being compressed and crushed in the crushing chamber extended from the upper part of the gyratory-type crusher to the lower part thereof, whereby the crushing achievement in terms of the required crushing power, particle size of a crushed product, crushing efficiency, bite, etc. can be optimized, and even in a case that the toothed plate is increasingly abraded, the drop of the crushing achievement can be effectively prevented.
  • this invention can produce significant advantageous effects.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Claims (7)

  1. Un élément broyeur de broyeurs giratoires (10), ledit élément broyeur comprenant une couronne (12) et une partie concave (18), dans lequel la couronne (12), en service, tourne à l'intérieur de la partie concave (18), ledit élément broyeur comprenant en outre un ensemble d'éléments formant des cannelures (16, 22) sous la forme de bandes écartées de manière circonférentielle l'une de l'autre d'un pas réglé sur les surfaces de broyage de la couronne (12) et de la partie concave (18), les éléments formant des cannelures (16) de la couronne (12) définissant une ligne de direction (17), c'est-à-dire une ligne normale aux éléments formant des cannelures, caractérisé en ce que la ligne de direction forme un angle de direction de 45° à 75° par rapport à une ligne de direction verticale (Z1, Z1) de la couronne (12), et les éléments formant des cannelures (22) de la partie concave définissant une ligne de direction (23) normale à une ligne de direction verticale (Z2, Z2) de la partie concave (18).
  2. Un élément broyeur de broyeurs giratoires (10), ledit élément broyeur comprenant une couronne (12) et une partie concave (18), dans lequel la couronne (12), en service, tourne à l'intérieur de la partie concave (18), ledit élément broyeur comprenant en outre un ensemble d'éléments formant des cannelures (16, 22) sous la forme de bandes écartées de manière circonférentielle l'une de l'autre d'un pas réglé sur les surfaces de broyage de la couronne (12) et de la partie concave (18), les éléments formant des cannelures (16) de la couronne (12) définissant une ligne de direction (17), c'est-à-dire une ligne normale aux éléments formant des cannelures, caractérisé en ce que la ligne de direction est normale à une ligne de direction verticale (Z1, Z1) de la couronne (12) et les éléments formant des cannelures (22) de la partie concave (18) définissant une ligne de direction (23) formant un angle de direction de 45° à 74° par rapport à la ligne de direction verticale (Z2, Z2) de la partie concave (18).
  3. Un élément broyeur de broyeurs giratoires (10), ledit élément broyeur comprenant une couronne (12) et une partie concave (18), dans lequel la couronne (12), en service, tourne à l'intérieur de la partie concave (18), ledit élément broyeur comprenant en outre un ensemble d'éléments formant des cannelures (16, 22) sous la forme de bandes écartées de manière circonférentielle l'une de l'autre d'un pas réglé sur les surfaces de broyage de la couronne (12) et de la partie concave (18), les éléments formant des cannelures (16, 22) à la fois de la couronne (12) et de la partie concave (18) définissant une ligne de direction (17, 23), c'est-à-dire une ligne normale aux éléments formant des cannelures, caractérisé en ce que les lignes de direction forment un angle de direction de 65° à 90° par rapport à la ligne de direction verticale (Z1, Z2), et les lignes de direction (17, 23) se coupant l'une l'autre selon un angle relatif de 15° à 45° sur lesdites surfaces de broyage.
  4. L'élément broyeur de broyeurs giratoires selon une quelconque des revendications 1, 2 et 3, dans lequel les éléments formant des cannelures (16, 22) sont formés d'une matière à faible résistance à l'abrasion et sont noyés par moulage dans les corps d'éléments broyeurs (14, 20) d'une matière fortement résistante à l'abrasion.
  5. L'élément broyeur de broyeurs giratoires selon une quelconque des revendications 1 à 4, dans lequel les éléments formant des cannelures (16, 22) sont circonférentiellement écartés de manière équidistante l'un de l'autre sur la couronne et la partie concave.
  6. L'élément broyeur de broyeurs giratoires selon une quelconque des revendications 1 à 4, dans lequel les éléments formant des cannelures (16, 22) sont circonférentiellement écartés de manière non-équidistante l'un de l'autre sur la couronne et la partie concave.
  7. L'élément broyeur de broyeurs giratoires selon une quelconque des revendications 1 à 6, dans lequel les surfaces de broyage desdits corps plats dentés (14, 20) sont ondulées, et les éléments formant des cannelures (16, 22) sont noyés dans des parties des surfaces de broyage.
EP93106395A 1992-04-20 1993-04-20 Elément broyeur d'un broyeur giratoire Expired - Lifetime EP0567077B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP126837/92 1992-04-20
JP4126837A JP2571172B2 (ja) 1992-04-20 1992-04-20 旋動式破砕機の歯板

Publications (3)

Publication Number Publication Date
EP0567077A2 EP0567077A2 (fr) 1993-10-27
EP0567077A3 EP0567077A3 (fr) 1994-04-06
EP0567077B1 true EP0567077B1 (fr) 1997-10-15

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EP93106395A Expired - Lifetime EP0567077B1 (fr) 1992-04-20 1993-04-20 Elément broyeur d'un broyeur giratoire

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EP (1) EP0567077B1 (fr)
JP (1) JP2571172B2 (fr)
AU (1) AU654773B2 (fr)
DE (1) DE69314529T2 (fr)
ZA (1) ZA932758B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7338000B2 (en) 2005-03-24 2008-03-04 Sandvik Intellectual Property Ab Shell for a gyratory crusher and a gyratory crusher

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3854904B2 (ja) 2002-07-29 2006-12-06 株式会社アーステクニカ コーンクラッシャ
AU2009357050B2 (en) * 2009-12-25 2013-08-22 Ing Shoji Co., Ltd. Vertical roller mill
DE102013008612B4 (de) 2013-05-22 2022-08-11 Thyssenkrupp Industrial Solutions Ag Kreiselbrecher
EP2818246B1 (fr) 2013-06-27 2015-12-02 Sandvik Intellectual Property AB Coque de broyage avec surface de concassage profilée
FI4115979T3 (fi) * 2021-07-07 2024-05-20 Metso Finland Oy Mantteli kara- tai kartiomurskaimeen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305183A (en) * 1964-06-15 1967-02-21 Morden Machines Company Machine for treating pulp material
US4454994A (en) * 1982-02-04 1984-06-19 Johnson Louis W Load bearing surface
US4773604A (en) * 1982-09-23 1988-09-27 Johnson Louis W Seat member for gyratory rock crusher bowls
AU578377B2 (en) * 1986-09-30 1988-10-20 Kawasaki Jukogyo Kabushiki Kaisha Gyratory crusher
JPS63143949A (ja) * 1986-12-09 1988-06-16 アイエヌジ商事株式会社 粉砕機に使用される破砕面部材
JPS6463052A (en) * 1987-09-03 1989-03-09 Kawasaki Heavy Ind Ltd Rotary crusher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7338000B2 (en) 2005-03-24 2008-03-04 Sandvik Intellectual Property Ab Shell for a gyratory crusher and a gyratory crusher

Also Published As

Publication number Publication date
ZA932758B (en) 1993-10-28
EP0567077A3 (fr) 1994-04-06
AU654773B2 (en) 1994-11-17
DE69314529T2 (de) 1998-05-14
EP0567077A2 (fr) 1993-10-27
JP2571172B2 (ja) 1997-01-16
JPH05293394A (ja) 1993-11-09
DE69314529D1 (de) 1997-11-20
AU3701993A (en) 1993-10-28

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