WO2012012854A1 - Conveyor-belt measurement-control assembly - Google Patents

Conveyor-belt measurement-control assembly Download PDF

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Publication number
WO2012012854A1
WO2012012854A1 PCT/BR2011/000196 BR2011000196W WO2012012854A1 WO 2012012854 A1 WO2012012854 A1 WO 2012012854A1 BR 2011000196 W BR2011000196 W BR 2011000196W WO 2012012854 A1 WO2012012854 A1 WO 2012012854A1
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WIPO (PCT)
Prior art keywords
belt
weight
sensor
weighing
tension
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PCT/BR2011/000196
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French (fr)
Portuguese (pt)
Inventor
Júlio César de Oliveira SILVEIRA
Original Assignee
Silveira Julio Cesar De Oliveira
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Application filed by Silveira Julio Cesar De Oliveira filed Critical Silveira Julio Cesar De Oliveira
Publication of WO2012012854A1 publication Critical patent/WO2012012854A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/08—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge
    • G01G11/12—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge by controlling the speed of the belt

Definitions

  • the Utility Utility Patent relates to an innovative apparatus designed to measure the tension of the conveyor belt as well as the misalignment of the belt on the conveyor belt trestles and more particularly to associate this information with the current devices of measuring the weight of solid, liquid and so many materials transported by a conveyor belt to enable, without being restricted, continuous inspection of the set of conditions of the belt conveyor in which the weighing device is operating, this being very important factor in the accuracy of the measurement.
  • the present measurement set was designed to measure voltage indirectly by measuring the size of the catenary formed on the belt between two adjacent stands, since this measurement, if performed in section of the conveyor known as the influence area of the balance does not interfere with the mechanical stability or the set of effects that form the effective tension in the belt, which allows an evaluation of the momentary conditions of the conveyor and compares, at any instant, with previous values taken as such as, for example, at the time the adjustments were made to calibrate the balance, or even, in certain circumstances, to be part of the integrator circuit to compensate the reading of the balance according to the variation of the tension in the belt.
  • CONJUNTO TRANSPORTING BELTS ", from then on, will be abbreviated as" CONJUNTO ", in order to facilitate the reading of the text.
  • Fig. 1 shows the "ASSEMBLY" without load.
  • Fig. 2 shows the "ASSEMBLY" with partial load.
  • Fig. 3 shows the "ASSEMBLY" with full load.
  • the "ASSEMBLY” consists basically of a mechanical structure (1); a voltage sensor (2); a weight sensor (3); a speed sensor (4) and a transmitter / integrator (5).
  • the mechanical structure (1) is composed of a conveyor belt (6) provided with chassis (7); impact trestles (8); approach trestles (9); easels (10) and side rails (4), in addition to the drive and non-motor pulleys (12), said weighing stands (10) being supported on flexible pivots (14) and housing the weight (3).
  • the tension sensor (2) is installed in the chassis (7), at the height of the approach racks (9).
  • the speed sensor (4) is also installed in the chassis (7), after the output rails (11).
  • the transmitter / integrator (5) is electronically connected to the voltage sensors (2), weight (3) and speed (4).
  • the operation of the "ASSEMBLY" is as follows.
  • the weight of the belt, the weight of the easel and the weight of the load on the belt causes a vertical displacement of the weighing stand (9) resting on the flexible pivots (14), transferring the information to the weight sensor (3), which generates an electrical signal proportional to the weight per unit length of the belt.
  • the speed sensor 4 in turn, generates a signal proportional to the speed of the cylinder.
  • These signals are combined in the transmitter / integrator (5) in order to report the weight per unit time and the total weight in a time interval.
  • the tension sensor (2) indicates the tension of the belt and allows compensating the effect of the tension on the belt on the vertical displacement of the structure and consequently on the signal generated by the weight sensor (3).
  • the present "set" is superior to other components of the state of the art, among many reasons, because it allows the belt tension to be known at the time of weighing, since there is an inverse proportional relation for the same load on the belt. it between the weight signal generated by the weight sensor (3) and the belt tension, ensuring that the conditions in which the balance was calibrated are maintained or not.
  • the greatest difficulty in weighing the conveyor belt lies in the fact that the balance of the energies used to move the conveyor is constantly altered by mechanical problems, increasing or decreasing in the system the portion of the total energy that is used by the load. None of the state-of-the-art designs incorporate continuous voltage measurement into their systems, and this is therefore the great innovation of this "KNOWLEDGE". Other advantages of this "ASSEMBLY" may be related.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Conveyors (AREA)

Abstract

The utility model patent relates to an innovative apparatus designed to measure the tension of the conveyor belt and also the misalignment of the belt on the conveyor-belt supports and, more particularly, for combining said information with current devices for measuring or weighing solids, liquids and other such materials, conveyed by a conveyor belt, in order to allow, without restriction, continuous inspection of the overall belt-conveyor conditions under which the weighing device is operating, this factor being very important in terms of measurement accuracy. The present invention is constituted basically by: a mechanical structure (1); a tension sensor (2); a weight sensor (3); a speed sensor (4); and a transmission/integration device (5). The mechanical structure (1) is composed of a conveyor belt (6) provided with a chassis (7), impact supports (8), approach supports (9), weighing supports (10) and exit supports (11), in addition to drive (12) and idle (13) pulleys, said weighing supports (10) being supported on flexible pivots (14) and covering the weight sensor (3). The tension sensor (2) is installed on the chassis (7), on a level with the approach supports (9). The speed sensor (4) is likewise installed on the chassis (7), downstream of the exit supports (11). The transmission/integration device (5) is connected electronically to the tension (2), weight (3) and speed (4) sensors.

Description

"CONJUNTO DE CONTROLE DE MEDIÇÃO EM CORREIAS TRANSPORTADORAS".  "MEASUREMENT CONTROL ASSEMBLY IN CONVEYOR BELTS".
A presente Patente de Modelo de Utilidade refere-se a um inovador aparelho concebido para medir a tensão da correia transportadora, como também o desalinhamento da correia sobre os cavaletes da correia transportadora e mais particularmente para associar estas informações aos dispositivos atuais de medir o peso de sólidos, líquidos e outros tantos materiais, transportados por uma correia transportadora para permitir, sem se restringir, a contínua inspeção do conjunto de condições do transportador de correia em que o dispositivo de pesagem esta funcionando, sendo este fator muito importante na precisão da medida.  The Utility Utility Patent relates to an innovative apparatus designed to measure the tension of the conveyor belt as well as the misalignment of the belt on the conveyor belt trestles and more particularly to associate this information with the current devices of measuring the weight of solid, liquid and so many materials transported by a conveyor belt to enable, without being restricted, continuous inspection of the set of conditions of the belt conveyor in which the weighing device is operating, this being very important factor in the accuracy of the measurement.
O estado da técnica referente ao presente assunto é constituído de variados processos de controle de vasão, porém nenhum com as características do presente projeto. Diversos meios têm sido aplicados com o propósito de medir a carga transportada por uma correia transportadora. Dispositivos com este propósito são conhecidos como balanças para correia transportadoras e são constituídos como ponte (suspensões de pesagem) de diferentes tipos como, por exemplo, apoiados por pivôs ou diretamente sobre células de cargas, conhecidos respectivamente por tipo "aproximação/ saída". Estes são construídos de forma a permitirem deslocar verticalmente em resposta a uma carga sobre o transportador pelo qual este movimento pode ser transmitido para uma célula de carga ou equivalentes, incluídos em circuito integrador. O circuito integrador combina a carga acima medida com a velocidade da correia para precisamente medir o peso do material transportado pela correia transportadora. Todos esses dispositivos, no entanto, possuem algumas carências como requerer extrema estabilidade das estruturas mecânicas do transportador e da ponte de pesagem; o comportamento constante da tensão da correia transportadora em função da carga aplicada sobre a mesma; a manutenção das propriedades físicas das correias transportadoras, tais como o módulo de elasticidade e coeficiente de rigidez em um ambiente de desgaste contínuo pela natureza de operação, exigindo os requisitos de manutenção comuns aos dispositivos rodantes, porém, ao contrario destes, não possuem nènhum recurso para indicar que estão medindo em um ambiente de estabilidade mecânica ou tensão de correia diferente daquele em que foram calibrados. Como ilustração, dispositivos similares podem ser encontrados nos documentos U.S. Pat. No. 1 ,074,123 publicada para S. D. Kinne em 30/9/ 1913, U.S. Pat. No. 3,339,650 publicada para L. B. Carr em 5/9/ I967 e U.S. Pat. No. 3,163,248 publicada para J. C. Farquhar em 29/12/ 1964. The state of the art concerning the present subject is constituted of varied processes of vasão control, but none with the characteristics of the present project. Various means have been applied for the purpose of measuring the load carried by a conveyor belt. Devices for this purpose are known as conveyor belt scales and are formed as bridge (weighing suspensions) of different types such as, for example, supported by pivots or directly on load cells, known respectively as "approach / exit" type. These are constructed so as to enable it to move vertically in response to a load on the conveyor by which this movement can be transmitted to a load cell or equivalents, included in an integrating circuit. The integrator circuit combines the load above measured with the speed of the belt to precisely measure the weight of the material carried by the conveyor belt. All these devices, however, have some shortcomings such as requiring extreme stability of the mechanical structures of the conveyor and the weighbridge; the constant behavior of the tension of the conveyor belt as a function of the load applied thereto; maintenance of the physical properties of conveyor belts, such as the modulus of elasticity and stiffness coefficient in an environment of continuous wear by the nature of operation, requiring the maintenance requirements common to rolling devices; contrary to these, they have no recourse to indicate that they are measuring in an environment of mechanical stability or belt tension different from that in which they were calibrated. As an illustration, similar devices can be found in U.S. Pat. No. 1, 074,123 issued to SD Kinne on 30/9/1913, U.S. Pat. No. 3,339,650 issued to LB Carr on 5/9/97 and U.S. Pat. No. 3,163,248 issued to JC Farquhar on 29/12/1994.
No sentido de superar todos os projetos conhecidos do estado da técnica é que foi desenvolvido o presente conjunto de medição destinado a medir tensão indiretamente através da medição da dimensão da catenária formada na correia, entre dois cavaletes adjacentes, pois esta medição, se realizada na seção do transportador conhecida como área de influência da balança, não interfere na estabilidade mecânica ou no conjunto de efeitos que formam a tensão efetiva na correia, o que permite uma avaliação das condições momentâneas do transportador e compara, em qualquer instante, com valores anteriores tomados como referenciais como, por exemplo, no momento em que foram realizados os ajustes para calibração da balança, ou até mesmo, em certas circunstâncias, fazerem parte de circuito integrador para compensar a leitura da balança em função da variação da tensão na correia.  In order to overcome all the known designs of the prior art, the present measurement set was designed to measure voltage indirectly by measuring the size of the catenary formed on the belt between two adjacent stands, since this measurement, if performed in section of the conveyor known as the influence area of the balance does not interfere with the mechanical stability or the set of effects that form the effective tension in the belt, which allows an evaluation of the momentary conditions of the conveyor and compares, at any instant, with previous values taken as such as, for example, at the time the adjustments were made to calibrate the balance, or even, in certain circumstances, to be part of the integrator circuit to compensate the reading of the balance according to the variation of the tension in the belt.
O presente "CONJUNTO DE CONTROLE DE MEDIÇÃO EM The present "MEASUREMENT CONTROL ASSEMBLY IN
CORREIAS TRANSPORTADORAS", a partir de então, será abreviadamente citado como "CONJUNTO", a fim de facilitar a leitura do texto. TRANSPORTING BELTS ", from then on, will be abbreviated as" CONJUNTO ", in order to facilitate the reading of the text.
A seguir serão descritos os desenhos, os quais serão posteriormente detalhados.  The drawings will be described below, which will be detailed later.
A Fig. 1 mostra o "CONJUNTO" sem carga.  Fig. 1 shows the "ASSEMBLY" without load.
A Fig. 2 mostra o "CONJUNTO" com carga parcial.  Fig. 2 shows the "ASSEMBLY" with partial load.
A Fig. 3 mostra o "CONJUNTO" com carga total.  Fig. 3 shows the "ASSEMBLY" with full load.
De acordo com os desenhos, o "CONJUNTO" é constituído basicamente de uma estrutura mecânica(1); um sensor de tensão(2); um sensor de peso(3); um sensor de velocidade(4) e um transmissor/integrador(5). A estrutura mecânica(1) é composta de uma correia transportadora(6) dotada de chassis(7); cavaletes de impacto(8); cavaletes de aproximação(9); cavaletes de pesagem(10) e cavaletes de saídá^H), além das polias motora(12) e não motora(13), sendo que os ditos cavaletes de pesagem(10) estão apoiados sobre pivôs flexíveis(14) e abrigam o sensor de peso(3). O sensor de tensão(2) encontra-se instalado no chassis(7), na altura dos cavaletes de aproximação(9). O sensor de velocidade(4) encontra-se também instalado no chassis(7), após os cavaletes de saída(11). O transmissor/integrador(5) é ligado eletronicamente aos sensores de tensão(2), de peso(3) e de velocidade(4). According to the drawings, the "ASSEMBLY" consists basically of a mechanical structure (1); a voltage sensor (2); a weight sensor (3); a speed sensor (4) and a transmitter / integrator (5). The mechanical structure (1) is composed of a conveyor belt (6) provided with chassis (7); impact trestles (8); approach trestles (9); easels (10) and side rails (4), in addition to the drive and non-motor pulleys (12), said weighing stands (10) being supported on flexible pivots (14) and housing the weight (3). The tension sensor (2) is installed in the chassis (7), at the height of the approach racks (9). The speed sensor (4) is also installed in the chassis (7), after the output rails (11). The transmitter / integrator (5) is electronically connected to the voltage sensors (2), weight (3) and speed (4).
O funcionamento do "CONJUNTO" dá-se da seguinte forma. O peso da correia, o peso do cavalete e o peso da carga sobre a correia provoca um deslocamento na vertical do cavalete de pesagem(9) apoiado sobre os pivôs flexíveis(14), transferindo a informação para o sensor de peso(3), o qual gera um sinal elétrico proporcional ao peso por unidade de comprimento da correia. O sensor de velocidade(4) gera, por sua vez, um sinal proporcional a velocidade da cdrreia. Estes sinais são combinados no transmissor/integrador(5) de forma a informar o peso por unidade de tempo e o peso totalizado em um intervalo de tempo. O sensor de tensão(2) indica qual a tensão da correia e permite compensar o efeito da tensão na correia sobre o deslocamento na vertical da estrutura e por consequência no sinal gerado pelo sensor de peso(3). O presente "CONJUNTO" revela-se superior aos demais projetos componentes do estado da técnica, entre tantas razões, porque permite que seja conhecido no momento da pesagem qual é a tensão da correia, pois existe uma relação inversamente proporcional, para uma mesma carga sobre ela, entre o sinal de peso gerado pelo sensor de peso(3) e a tensão na correia, assegurando que as condições em que a balança foi calibrada estão mantidas ou não. A maior dificuldade em pesagem em correia transportadora encontra-se no fato de que o balanço das energias empregadas para movimentar o transportador é constantemente alterado por problemas mecânicos, aumentando ou diminuindo no sistema a parcela da energia total que é utilizada pela carga. Nenhum dos projetos do estado da técnica incorpora a seus sistemas a medição continua da tensão, sendo, portanto, essa a grande inovação do presente "CONJUNTO". Outras vantagens der presente "CONJUNTO" podem ser relacionadas. Fornece um método de medição contínuo da tensão da correia transportadora, não interfere nas condições de medição da suspensão de pesagem, possui construção simples e é relativamente barato. Fornece uma indicação permanente e em tempo real das condições que interferem na precisão da pesagem, tanto para compensar sua leitura quanto para predizer o momento no futuro próximo que uma manutenção deverá ser realizada. Fornecer a informação de que o conjunto de forças de fricção resultante da ação de cada um de seus componentes, tais como cavaletes/roletes, saias laterais, polias e esticadores estão produzindo uma determinada tensão, pois este sinal pode ser ou não associado com a velocidade da correia, e referenciado, por exemplo, quando a correia estiver vazia ou com uma carga conhecida, para indicar a eficiência (consumo de energia / unidade de peso transportada) do transportador ou a necessidade de manutenção. Associa a velocidade da correia ¾ a medição do efeito da carga sobre a catenária formada entre dois cavaletes adjacentes em umjntegrador ou software de analise com ferramental matemático fornecendo uma pesagem contínua, no qual um sinal proporcional à velocidade de correia transportadora pode ser integrado com um sinal proporcional à tensão em uma correia transportadora para dar um sinal de saída proporcional à taxa de fluxo de material sobre a correia transportadora. E todos esses dados integrados no tempo para fornecer o total pesado, formando assim uma balança para correia transportadora diferente das outras existentes por medir distância ao invés de forca. Existem ainda dois benefícios na medição da tensão, quais sejam o controle da quantidade de energia consumida para o transporte do material e da vida útil da correia. Sendo a forma mais comum de se medir a tensão é a indicação feita pela medição de catenária entre dois cavaletes do transportador, fica claro que a invenção existe independente de que a medição de tensão esteja necessariamente associada à pesagem do fluxo. The operation of the "ASSEMBLY" is as follows. The weight of the belt, the weight of the easel and the weight of the load on the belt causes a vertical displacement of the weighing stand (9) resting on the flexible pivots (14), transferring the information to the weight sensor (3), which generates an electrical signal proportional to the weight per unit length of the belt. The speed sensor 4, in turn, generates a signal proportional to the speed of the cylinder. These signals are combined in the transmitter / integrator (5) in order to report the weight per unit time and the total weight in a time interval. The tension sensor (2) indicates the tension of the belt and allows compensating the effect of the tension on the belt on the vertical displacement of the structure and consequently on the signal generated by the weight sensor (3). The present "set" is superior to other components of the state of the art, among many reasons, because it allows the belt tension to be known at the time of weighing, since there is an inverse proportional relation for the same load on the belt. it between the weight signal generated by the weight sensor (3) and the belt tension, ensuring that the conditions in which the balance was calibrated are maintained or not. The greatest difficulty in weighing the conveyor belt lies in the fact that the balance of the energies used to move the conveyor is constantly altered by mechanical problems, increasing or decreasing in the system the portion of the total energy that is used by the load. None of the state-of-the-art designs incorporate continuous voltage measurement into their systems, and this is therefore the great innovation of this "KNOWLEDGE". Other advantages of this "ASSEMBLY" may be related. It provides a method of continuous measurement of conveyor belt tension, does not interfere with the measurement conditions of the weighing suspension, has simple construction and is relatively inexpensive. It provides a permanent and real-time indication of conditions that interfere with the accuracy of weighing, both to compensate for its reading and to predict the momentum in the near future that a maintenance should be performed. Provide information that the set of frictional forces resulting from the action of each of its components, such as trestles / rollers, side skirts, pulleys and stretchers are producing a certain tension, since this signal may or may not be associated with the speed of the belt, and referenced, for example, when the belt is empty or with a known load, to indicate the efficiency (power consumption / weight unit carried) of the conveyor or the need for maintenance. Associates the speed of the belt ¾ measuring the effect of the load on the catenary formed between two adjacent stands in an integrator or analysis software with mathematical tooling providing a continuous weighing, in which a signal proportional to the speed of the conveyor belt can be integrated with a signal proportional to the tension in a conveyor belt to give an output signal proportional to the flow rate of material on the conveyor belt. And all these data integrated in time to provide the total heavy, thus forming a scale for conveyor belt different from the existing ones by measuring distance rather than force. There are also two benefits in measuring the voltage, which are the control of the amount of energy consumed to transport the material and the life of the belt. Since the most common form of voltage measurement is the indication made by the catenary measurement between two conveyor stands, it is clear that the invention exists regardless of whether the voltage measurement is necessarily associated with the weighing of the flow.
Há que se salientar ainda que existem basicamente dois modelos de ponte de pesagem, o aqui descrito com pivô e outro com a ponte apoiada em sensores de pesos e que o presente "CONJUNTO" atende a ambos os tipos. Além disso, o presente ONJtflftTO" atende à medição de tensão em correias transportadoras transportando quaisquer tipos de materiais, sejam sólidos, granéis ou líquidos. It should be noted that there are basically two models of weighbridge, the one described here with pivot and another with the bridge supported by weight sensors and that this "ASSEMBLY" caters to both types. In addition, the present invention "measures the tension in conveyor belts carrying any kind of material, whether solid, bulk or liquid.
Assim sendo, pode-se concluir que o presente "CONJUNTO DE CONTROLE DE MEDIÇÃO EM CORREIAS TRANSPORTADORAS" dispõe de totais condições para obter a concessão da Patente de Modelo de Utilidade.  Therefore, it can be concluded that the present "CONTROL MEASUREMENT ASSEMBLY IN TRANSPORTING BELTS" has total conditions to obtain the Utility Model Patent concession.

Claims

REIVINDICAÇÕES
1a)"CONJUNTO DE CONTROLE DE MEDIÇÃO EM CORREIAS TRANSPORTADORAS" constituído basicamente de uma estrutura mecânica(1); um sensor de tensão(2); um sensor de peso(3) e um sensor de velocidade(4), sendo a estrutura mecânica(1) composta de uma correia transportadora(6) dotada de chassis(7); cavaletes de impacto(8); cavaletes de aproximação(9); cavaletes de pesagem(10) e cavaletes de saída(1 1), além das polias motora(12) e não motora(13); ditos cavaletes de pesagem(10) estão apoiados sobre pivôs flexíveis(14) e abrigam o sensor de peso(3); dito sensor de tensão(2) encontra-se instalado no chassis(7), antes dos cavaletes de pesagem(9); dito sensor de velocidade(4) encontra-se também instalado no chassis(7), após os cavaletes de saída(11) e caracterizado por possuir um transmissor/integrador(5) ligado eletronicamente aos sensores de tensão(2), de peso(3) e de velocidade(4). 1 a ) "MEASUREMENT CONTROL ASSEMBLY IN CONVEYOR BELTS" basically consisting of a mechanical structure (1); a voltage sensor (2); a weight sensor (3) and a speed sensor (4), the mechanical structure (1) being composed of a conveyor belt (6) provided with chassis (7); impact trestles (8); approach trestles (9); weighing trestles (10) and output trestles (11), in addition to the drive and non-motor pulleys (13); said weighing trestles (10) are supported on flexible pivots (14) and house the weight sensor (3); said tension sensor (2) is installed in the chassis (7), before the weighing stands (9); said speed sensor (4) is also installed in the chassis (7), after the output racks (11) and characterized by having a transmitter / integrator (5) electronically connected to the voltage sensors (2), weight 3) and speed (4).
2a)"CON JUNTO DE CONTROLE DE MEDIÇÃO EM CORREIAS2 a ) "CON MEASUREMENT CONTROL MEASUREMENT IN BELTS
TRANSPORTADORAS", de acordo com a reivindicação 1 , caracterizado por, em seu funcionamento, o peso da correia, o peso do cavalete e o peso da carga sobre a correia provocarem um deslocamento na vertical do cavalete de pesagem(10) apoiado sobre os pivôs flexíveis(14), transferindo a informação para o sensor de peso(3), o qual gera um sinal elétrico proporcional ao peso por unidade de comprimento da correia; o sensor de velocidade(4) gerar, por sua vez, um sinal proporcional a velocidade da correia; por estes sinais serem combinados no transmissor/integrador(5) de forma a informar o peso por unidade de tempo e o peso totalizado em um intervalo de tempo e por o sensor de tensão(2) indicar qual a tensão da correia e permite compensar o efeito da tensão na correia sobre o deslocamento na vertical da estrutura e por consequência no sinal gerado pelo sensor de peso(3). CONVEYORS "according to claim 1, characterized in that in its operation, the weight of the belt, the weight of the belt and the weight of the load on the belt cause a vertical displacement of the weighing stand (10) resting on the pivots (14), transferring the information to the weight sensor (3), which generates an electrical signal proportional to the weight per unit length of the belt; the speed sensor (4) in turn generates a signal proportional to (5) in order to report the weight per unit of time and the total weight in a time interval and that the voltage sensor (2) indicates the tension of the belt and allows to compensate for the effect of the tension on the belt on the vertical displacement of the structure and consequently on the signal generated by the weight sensor (3).
PCT/BR2011/000196 2010-07-13 2011-07-06 Conveyor-belt measurement-control assembly WO2012012854A1 (en)

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BRMU9001157-0 2010-07-13
BRMU9001157 BRMU9001157U2 (en) 2010-07-13 2010-07-13 conveyor belt measurement control set

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CN103017872A (en) * 2012-12-04 2013-04-03 重庆市渝溪产业（集团）有限公司 Dynamic metering device
CN103482323A (en) * 2013-09-26 2014-01-01 雅化集团内蒙古柯达化工有限公司 High-precision conveying metering system of multi-hole granular ammonium nitrate fuel oil mixture site mixed-loading vehicle
CN104457931A (en) * 2014-12-05 2015-03-25 常熟市贝特机电制造有限公司 Belt weigher
GB2545168A (en) * 2015-12-01 2017-06-14 D & G Mech Solutions Ltd An improved conveyer weigh cell module
WO2017098156A1 (en) * 2015-12-09 2017-06-15 Appalette Tourtellier Systemes Regular-flow extraction unit
CN114396995A (en) * 2022-01-14 2022-04-26 赛摩电气有限公司 Weighing device and metering method of belt feeder

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