WO2020061719A1 - Special plate-threaded bar forming part of a system for fastening rubber liners in ball mills for mineral processing - Google Patents

Special plate-threaded bar forming part of a system for fastening rubber liners in ball mills for mineral processing Download PDF

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Publication number
WO2020061719A1
WO2020061719A1 PCT/CL2019/000008 CL2019000008W WO2020061719A1 WO 2020061719 A1 WO2020061719 A1 WO 2020061719A1 CL 2019000008 W CL2019000008 W CL 2019000008W WO 2020061719 A1 WO2020061719 A1 WO 2020061719A1
Authority
WO
WIPO (PCT)
Prior art keywords
spun
plate
platen
bar
threaded bar
Prior art date
Application number
PCT/CL2019/000008
Other languages
Spanish (es)
French (fr)
Inventor
Nicolás BENAVIDES MORAGA
Original Assignee
Benavides Moraga Nicolas
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 Benavides Moraga Nicolas filed Critical Benavides Moraga Nicolas
Publication of WO2020061719A1 publication Critical patent/WO2020061719A1/en

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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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/22—Lining for containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/06—Specially-shaped heads

Definitions

  • the present utility model refers to a platen with a spun wheel attached to each other as part of a cladding fastening system used in all types of mineral treatment ball mill used in mining is screwed together.
  • Ball mills used in mining have internal rubber linings to protect the inner mantle from wear, the linings are attached to the cylinder with a clamping system consisting of:
  • a conventional bolt a plate with a hexagonal housing for the bolt head, steel tails, rubber and nut.
  • the special spinning plate / bar proposed as a utility model consists of separating the plate from the bolt by unscrewing the spun bar from the plate.
  • the presented model is installed in a conventional way in the metallic core of the lifter and on the outside of the mill tails and nut are installed to torque.
  • the fastening system When it is required to replace the worn lining, the fastening system must be removed, this is done by installing a split key in the hole of the spun bar and with an impact wrench, the nut is unscrewed and when it comes into contact with the key, it forces turn the spun bar in the same direction as loosen and it is unlocked from the stage, being released and can be removed by hand.
  • the spinning plate and bar, object of the present utility model presents a safer, faster and more efficient way to remove the current clamping system used in ball mills.
  • the proposed solution consists of modifying the current metal plate by removing the hexagonal housing to accommodate the bolt head and replacing it with a hole with thread (3) as if replacing the bolt with a spun bar pierced at one of its ends (4) and (10), these elements are joined by screwing together (3) (4), an assembly that ends together and is installed in the conventional way in the mill linings.
  • the socket is installed in the impact wrench, the split key is installed in the hole (10) in the threaded bar (4), then the nut is unscrewed (9) this nut, when in contact with the key, forces the spun bar (4) to
  • the joined assembly (3) (4) introduces the metallic core of the lifter (2) to install the lifter in its working position.
  • the proposed fastening system ties the lining (l) (5) to the mill mantle (ll) with tails and nuts (6) (7) (8) and (9) to make a watertight joint and which is safe to hold efficiently coating.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention relates to a special plate-threaded bar forming part of a system for fastening rubber liners in ball mills for mineral processing. The plate-threaded bar assembly is formed by two pieces: a steel plate with a central threaded perforation, and a threaded bar with a perforation at one end. In operation, the threaded bar is screwed to the plate, the two elements being joined together, forming a fastening system, once in position to install a nut and a washer and tighten. The fastening system secures the liners to the mill shell when the nut is installed at the other end and tightened. When it is desired to release the fastening system (for liner replacement), a split pin is inserted into the hole of the threaded bar. The nut is unscrewed using a pneumatic wrench with a corresponding hexagonal socket, and when the nut makes contact with the pin, it forces the threaded bar to unscrew from the plate. In this way, the threaded bar is completely released from the plate in a single quick and safe process.

Description

PLATI NA/BARRA HILADA ESPECIAL, PARTE DE UN SISTEMA DE SUJECIÓN PARA REVESTIMIENTOS DE CAUCHO EN MOLINOS DE BOLAS DE TRATAMIENTO DE MINERALES.  PLATI NA / SPECIAL SPINNING BAR, PART OF A HOLDING SYSTEM FOR RUBBER COATINGS IN MINERAL TREATMENT BALL MILLS.
El presente modelo de utilidad se refiere a una platina con un abarra hilada unidos entre si por estar atornillado entre ellos parte de un sistema de sujeción de los revestimientos utilizado en todo tipo de molino de bolas de tratamiento de minerales utilizado en minería. The present utility model refers to a platen with a spun wheel attached to each other as part of a cladding fastening system used in all types of mineral treatment ball mill used in mining is screwed together.
Descripción de lo conocido en la materia. Description of what is known in the art.
Los molinos de bolas utilizados en minería, poseen revestimientos interiores de caucho para proteger el manto interior del desgaste, los revestimientos se unen al cilindro con un sistema de sujeción compuesto por: Ball mills used in mining, have internal rubber linings to protect the inner mantle from wear, the linings are attached to the cylinder with a clamping system consisting of:
Un perno convencional, una platina con un alojamiento hexagonal para la cabeza del perno, golillas de acero, caucho y tuerca.  A conventional bolt, a plate with a hexagonal housing for the bolt head, steel tails, rubber and nut.
Los cuerpos de molienda (bolas) y el mineral a moler, al girar el molino van produciendo un desgaste al revestimiento, el cual requiere ser reemplazado permanentemente.  The grinding bodies (balls) and the ore to be milled, as the mill rotates, cause wear to the lining, which requires permanent replacement.
En el reemplazo del revestimiento se deben retirar los sistemas de sujeción de los revestimientos a reemplazar(gastados), la remoción presenta diversas  In the replacement of the lining, the fastening systems of the linings to be replaced (worn) must be removed, the removal has various
dificultades: uso de herramientas de golpe de gran peso, mucha mano de obra; lo que implica alto de porcentaje de riesgo de accidente del trabajo, enfermedades profesionales y exceso de tiempo en su remoción con los consiguientes altos costos. difficulties: use of heavy hitting tools, a lot of labor; which implies a high percentage of risk of accidents at work, occupational diseases and excess time in its removal with the consequent high costs.
Las dificultades a su retiro obedecen fundamentalmente a la dificultad que se presenta al empujar a golpes la totalidad de los pernos hacia el interior del molino(actividad unitaria) a golpes con herramientas pesadas, a lo anterior se suma el gran porcentaje de tiempo en la remoción de estos sistemas.  The difficulties of its removal are mainly due to the difficulty that occurs when pushing all the bolts into the mill (unit activity) with heavy tools, hitting the above, the large percentage of time in removal is added of these systems.
Todo lo señalado genera a las empresas mineras un costo alto mayor, puesto que de ello depende directamente de la cantidad de horas que se detiene la producción. Enfocado en los procesos de producción y mantención en la industria minera, es urgente minimizarlos y racionalizarlos atreves de nuevas tecnologías  All the aforementioned generates mining companies a higher high cost, since it directly depends on the number of hours that production stops. Focused on production and maintenance processes in the mining industry, it is urgent to minimize and rationalize them through new technologies
caracterizadas por la gestión del medio ambiente y el fortalecimiento a la interacción del trabajador con su entorno mas seguro y confortable. characterized by environmental management and strengthening the interaction of the worker with their safest and most comfortable environment.
La platina/barra hilada especial propuesta como modelo de utilidad consiste en independizar la platina del perno desatornillando la barra hilada de la platina. The special spinning plate / bar proposed as a utility model consists of separating the plate from the bolt by unscrewing the spun bar from the plate.
Su montaje en el instante de reemplazo de revestimiento es igual al convencional. Los elementos constitutivos básicos del modelo de utilidad presentados son: Its assembly in the instant of replacement of the coating is the same as the conventional one. The basic constituent elements of the utility model presented are:
-Platina de acero con perforación hilada en el centro de ella (en su cara de mayor superficie) -Steel plate with perforation spun in the center of it (on its largest surface)
-Barra hilada, hilo idéntico al tallado en platina de acero.  -Spun bar, thread identical to the one carved on a steel plate.
El modelo presentado se instala de forma convencional en el alma metálica del levantador y por el exterior del molino se instalan golillas y tuerca para torquear. Cuando se requiere hacer el reemplazo del revestimiento gastado se debe retirar el sistema de sujeción, esto se hace instalando chaveta partida en el agujero de la barra hilada y con llave de impacto se desatornilla la tuerca y esta cuando entra en contacto con la chaveta obliga a girar la barra hilada en el mismo sentido del desapriete y esta se destraba de la platina, quedando liberada y puede ser retirada con la mano. The presented model is installed in a conventional way in the metallic core of the lifter and on the outside of the mill tails and nut are installed to torque. When it is required to replace the worn lining, the fastening system must be removed, this is done by installing a split key in the hole of the spun bar and with an impact wrench, the nut is unscrewed and when it comes into contact with the key, it forces turn the spun bar in the same direction as loosen and it is unlocked from the stage, being released and can be removed by hand.
Breve descripción de las figuras Figura 1: Brief description of the figures Figure 1:
Representa una vista en corte esquemática de un sistema de sujeción  Represents a schematic sectional view of a clamping system
convencional. conventional.
Figura 2: Figure 2:
Representa una vista en corte esquemático del sistema de sujeción que incluye los elementos propuestos.  It represents a schematic sectional view of the fastening system that includes the proposed elements.
Descripción del modelo de utilidad Description of the utility model
La platina y barra hilada, objeto del presenta modelo de utilidad presenta una forma mas segura, rápida y eficiente de remover el sistema de sujeción actual utilizado en los molinos de bolas. The spinning plate and bar, object of the present utility model presents a safer, faster and more efficient way to remove the current clamping system used in ball mills.
En una realización preferente, según se ilustra en figura(2); la solución propuesta consiste en modificar la actual platina metálica eliminando el alojamiento hexagonal para alojar la cabeza del perno y reemplazarlo por un agujero con hilo(3) como a si mismo reemplazar el perno con una barra hilada perforada en uno de sus extremos(4) y (10), estos elementos se unen atornillándose entre ellos(3)(4), conjunto que termina unida y se instala en la forma convencional en los revestimientos de molinos.  In a preferred embodiment, as illustrated in figure (2); the proposed solution consists of modifying the current metal plate by removing the hexagonal housing to accommodate the bolt head and replacing it with a hole with thread (3) as if replacing the bolt with a spun bar pierced at one of its ends (4) and (10), these elements are joined by screwing together (3) (4), an assembly that ends together and is installed in the conventional way in the mill linings.
Para liberar el sistema de sujeción en el instante del reemplazo del revestimiento, se procede a instalar en la llave de impacto el dado, se instala la chaveta partida en agujero(lO) en barra hilada(4), luego se comienza a desatornillar la tuerca(9) esta tuerca al entrar en contacto con la chaveta obliga a la barra hilada(4) a  To release the fastening system at the instant of the replacement of the lining, the socket is installed in the impact wrench, the split key is installed in the hole (10) in the threaded bar (4), then the nut is unscrewed (9) this nut, when in contact with the key, forces the spun bar (4) to
desatornillarse simultáneamente liberando la barra hilada(4) de la platina(3). Dicho de otra forma en operación el conjunto unido(3)(4) se introduce el alma metálica del levantador(2) para instalar el levantado en su posición de trabajo. El sistema de sujeción propuesto amarra el revestimiento(l)(5) al manto del molino(ll) con golillas y tuercas(6)(7)(8) y (9) para hacer una unión estanca y que se ve seguridad de sujetar eficientemente el revestimiento. unscrew simultaneously, releasing the spun bar (4) from the plate (3). In other words, in operation, the joined assembly (3) (4) introduces the metallic core of the lifter (2) to install the lifter in its working position. The proposed fastening system ties the lining (l) (5) to the mill mantle (ll) with tails and nuts (6) (7) (8) and (9) to make a watertight joint and which is safe to hold efficiently coating.
Con esta innovación se termina la acción de impactar el perno hacia el interior del molino para retirar los revestimientos usados, a raíz de que al desatornillar la barra hilada(4) respecto a la platina(3) y esta se retira finalmente con la mano. With this innovation, the action of impacting the bolt towards the interior of the mill to remove the used coatings is ended, as a result of unscrewing the spun bar (4) with respect to the plate (3) and this is finally removed by hand.
La apariencia física no cambia su entorno y sus características; en termino de resistencia de los materiales es equivalente al sistema de sujeción convencional . The physical appearance does not change its environment and its characteristics; in terms of material resistance it is equivalent to the conventional fastening system.

Claims

Reivindicaciones  Claims
1-Platina y barra hilada parte de un sistema de sujeción para molinos de tratamientos de minerales, que facilita la remoción del sistema de sujeción caracterizada por que esta constituido por dos piezas. Una platina de acero perforada con hiio(3) y una barra hilada perforada en uno de sus extremos (4) (10) 1-Platen and spun bar part of a clamping system for mineral treatment mills, which facilitates the removal of the clamping system characterized by that it consists of two pieces. A hiio perforated steel plate (3) and a spun bar perforated at one end (4) (10)
2-La platina y barra hilada según reivindicación numero 1 caracterizada por que el producto de la unión de platina(3) y barra hilada(4) las cuales al ser 2-The platen and spun bar according to claim number 1 characterized in that the product of the union of platen (3) and spun bar (4) which, being
desatornilladas permite la separación de estos (3) y (4). unscrewed allows the separation of these (3) and (4).
3-La platina y barra hilada según reivindicaciones numero 1 y 2, caracterizada porque la barra hilada (4) al desatornillar la tuerca(9) y esta al entrar en contacto con chaveta introducida al agujero(lO) de la platina (3) dejan libre la barra hilada(4) pudiendo ser retirada la barra hilada(4) con la mano hacia el exterior del molino. 3-The platen and spun bar according to claims number 1 and 2, characterized in that the spun bar (4) when unscrewing the nut (9) and when it comes into contact with the key inserted into the hole (10) of the platen (3) leave free the spun bar (4) and the spun bar (4) can be removed by hand towards the outside of the mill.
4-La platina y barra hilada según reivindicación numero 1, 2 y 3 caracterizada porque termina con la acción de impactar el perno convencional para retirar sistema sujeción evitando la utilización de herramientas peligrosas. 4-The platen and spun bar according to claim number 1, 2 and 3 characterized in that it ends with the action of impacting the conventional bolt to remove the fastening system avoiding the use of dangerous tools.
5-La platina y barra hilada según reivindicación numero 1, 2, 3 y 4 caracterizada porque su acción y operación en los molinos de la minería y otros hace que la remoción del sistema de sujeción sea mas segura, rápida, limpia y eficiente. 5-The spinning plate and bar according to claim number 1, 2, 3 and 4 characterized in that its action and operation in the mining mills and others makes the removal of the fastening system safer, faster, cleaner and more efficient.
6-La platina y la barra hilada según reivindicación numero 1, 2, 3, 4 y 5 6-The platen and the spun bar according to claim number 1, 2, 3, 4 and 5
caracterizada porque la apariencia física de este sistema nacida de la unión hilada de la platina perforada(3) y la barra hilada(4) da lugar a un sistema con characterized in that the physical appearance of this system born from the spun connection of the perforated plate (3) and the spun bar (4) gives rise to a system with
características de forma igual a un sistema convencional actualmente en uso. En los sistemas de sujeción de revestimientos de molinos para minería y features in the same way as a conventional system currently in use. In the cladding systems of mill liners for mining and
paralelamente dentro de sus características en términos de resistencia de los materiales también es equivalente a una platina con alojamiento hexagonal para cabeza del perno y un perno convencional. Parallel to its characteristics in terms of material resistance, it is also equivalent to a plate with a hexagonal housing for a bolt head and a conventional bolt.
PCT/CL2019/000008 2018-09-27 2019-02-11 Special plate-threaded bar forming part of a system for fastening rubber liners in ball mills for mineral processing WO2020061719A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CL2732-2018 2018-09-27
CL2018002732 2018-09-27

Publications (1)

Publication Number Publication Date
WO2020061719A1 true WO2020061719A1 (en) 2020-04-02

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ID=69950331

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PCT/CL2019/000008 WO2020061719A1 (en) 2018-09-27 2019-02-11 Special plate-threaded bar forming part of a system for fastening rubber liners in ball mills for mineral processing

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013116892A1 (en) * 2012-02-06 2013-08-15 Donhad Pty Ltd Quickly releasable liner bolt
WO2015024054A2 (en) * 2013-08-19 2015-02-26 Brian Investments Pty Ltd Releasable fastener
WO2017210747A1 (en) * 2016-06-08 2017-12-14 Brian Investments Pty Ltd Wear liner assembly
WO2018102863A1 (en) * 2016-12-06 2018-06-14 Craig Oldnall Liner bolt
WO2018112524A1 (en) * 2016-12-19 2018-06-28 Russell Mineral Equipment Pty Ltd Mill liner installation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013116892A1 (en) * 2012-02-06 2013-08-15 Donhad Pty Ltd Quickly releasable liner bolt
WO2015024054A2 (en) * 2013-08-19 2015-02-26 Brian Investments Pty Ltd Releasable fastener
WO2017210747A1 (en) * 2016-06-08 2017-12-14 Brian Investments Pty Ltd Wear liner assembly
WO2018102863A1 (en) * 2016-12-06 2018-06-14 Craig Oldnall Liner bolt
WO2018112524A1 (en) * 2016-12-19 2018-06-28 Russell Mineral Equipment Pty Ltd Mill liner installation

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