← Class ReferenceReferência de Classes
exported necessary COPI_0000289
Gear Pump
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000289
Generated onGerado em 2026-04-16
Natural Language DefinitionDefinição em Linguagem Natural
EN
A gear pump is a pump that contains gear teeth within a casing or enclosure to transport liquid at relatively high back pressures through meshing action.
PT-BR
Uma bomba de engrenagem é uma bomba que contém dentes de engrenagem dentro de um invólucro ou carcaça para transportar líquido em pressões de retorno relativamente altas através de ação de engrenamento.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every gear pump is a pump that has as component part at all times a gear mechanism and a pump casing, and bears a pumping function.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Necessary condition]∀x (GearPump(x) → Pump(x) ∧ ∃f (PumpingFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: PumpingFunction]∀f (PumpingFunction(f) → ∀p (realizedIn(f,p) → PumpingProcess(p)) ∧ ∃p (PumpingProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Structural differentia (necessary only)]∀x (GearPump(x) → ∃hasComponentPartAtAllTimes.GearMechanism ⊓ ∃hasComponentPartAtAllTimes.PumpCasing) — Step 3: structural property — necessary condition, not sufficient (OWA prevents ≡) [Necessary part: PumpCasing]∀x (GearPump(x) → ∃p (PumpCasing(p) ∧ hasComponentPartAtAllTimes(x,p))) — Step 4: mereological commitment — every instance must have this part [Process participation signature]∀x ∀f ((GearPump(x) ∧ PumpingFunction(f) ∧ bearerOf(x,f)) → ∃m (LiquidPortion(m) ∧ participatesIn(m,f)) ∧ ∃e (LiquidPortion(e) ∧ participatesIn(e,f)) ∧ processType(f,MechanicalPowerTransmission)) — Step 5: typed participants in the realising process
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> . @prefix : <https://www.inf.ufrgs.br/ontologies/copi/> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . @prefix bfo: <http://purl.obolibrary.org/obo/> . @prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> . @prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> . @prefix skos: <http://www.w3.org/2004/02/skos/core#> . @prefix qudt: <http://qudt.org/schema/qudt/> . @prefix dcterms: <http://purl.org/dc/terms/> . @prefix foaf: <http://xmlns.com/foaf/0.1/> . @prefix apv: <http://inf.ufrgs.br/ontologies/apv#> . ### COPI — Core Ontology for Petroleum Installations ### Class module: GearPump <https://www.inf.ufrgs.br/ontologies/copi> rdf:type owl:Ontology ; dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ; dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ; dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ; skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ; skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ; skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ; skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ; owl:versionInfo "1.1.0-104-g4d16eff" ; owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ; owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ; dcterms:creator "Nicolau Oyhenard dos Santos"@en ; dcterms:contributor "Cauã Antunes" ; dcterms:contributor "Haroldo Rojas" ; dcterms:contributor "Rafael Petry" ; dcterms:contributor "Régis Romeu" ; dcterms:contributor "Mara Abel" ; dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ; dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ; dcterms:license <https://creativecommons.org/licenses/by/4.0/> ; dcterms:created "2026-04-08"^^xsd:date ; dcterms:modified "2026-07-13"^^xsd:date ; apv:GlobalMinLanguageCoverage "en pt-br" ; apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ; apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" . iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ; apv:MinAnnotationLength 20 . ### Identity-giving function :PumpingFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :PumpingProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :PumpingProcess ] ; rdfs:label "pumping function"@en ; rdfs:label "função de bombeamento"@pt-br . ### Process type :PumpingProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "pumping process"@en ; rdfs:label "processo de bombeamento"@pt-br . :PumpingProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :LiquidPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :LiquidPortion ] . ### Equipment universal: GearPump :GearPump rdf:type owl:Class ; rdfs:subClassOf :Pump ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :PumpingFunction ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasComponentPartAtAllTimes ; owl:someValuesFrom :PumpCasing ] ; rdfs:label "gear pump"@en ; rdfs:label "bomba de engrenagem"@pt-br ; iof-av:naturalLanguageDefinition "A gear pump is a pump that contains gear teeth within a casing or enclosure to transport liquid at relatively high back pressures through meshing action."@en ; skos:definition "A gear pump is a pump that contains gear teeth within a casing or enclosure to transport liquid at relatively high back pressures through meshing action."@en ; iof-av:naturalLanguageDefinition "Uma bomba de engrenagem é uma bomba que contém dentes de engrenagem dentro de um invólucro ou carcaça para transportar líquido em pressões de retorno relativamente altas através de ação de engrenamento."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every gear pump is a pump that has as component part at all times a gear mechanism and a pump casing, and bears a pumping function."@en ; iof-av:firstOrderLogicAxiom "∀x (GearPump(x) → Pump(x) ∧ ∃g,c (GearMechanism(g) ∧ PumpCasing(c) ∧ hasComponentPartAtAllTimes(x,g) ∧ hasComponentPartAtAllTimes(x,c)))"@en ; iof-av:isPrimitive "true"^^xsd:boolean ; iof-av:primitiveRationale "Using necessary conditions for this constructive type. While the gear mechanism is definitionally necessary for gear pumps, making it sufficient under OWA could lead to false positives - any complex equipment containing gears (like gearboxes with integrated pumps or multi-function units) might be incorrectly classified as standard gear pumps for maintenance purposes."@en ; :PumpCasing rdf:type owl:Class ; rdfs:subClassOf iof-core:MaterialArtifact ; rdfs:label "carcaça de bomba"@pt-br ; rdfs:label "pump casing"@en . # Disjointness: GearPump and CentrifugalPump [] rdf:type owl:AllDisjointClasses ; owl:members ( :GearPump :CentrifugalPump ) .
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
PumpingFunction ⊑ DesignedFunction
Realized in
PumpingProcess ⊑ PlannedProcess
Gear pumps perform the same fundamental function as any pump - adding mechanical energy to liquid to transport it from one location to another. The identity-giving function is the generic PumpingFunction already established for all pumps, not a specialized subtype.
2 Genus DeterminationDeterminação do Gênero
Pumpbfo:Object (BFO_0000030)
Both ISO 15926 and POSC Caesar explicitly classify gear pump as a subtype of pump/rotary pump. The parent_candidates include 'Pump' which is already enriched in our ontology. This is the correct level of specificity - more specific than 'Assembly' but appropriately general for all pump subtypes.
3 Differentia SpecificaDiferença Específica
∃hasComponentPartAtAllTimes.GearMechanism ⊓ ∃hasComponentPartAtAllTimes.PumpCasing

Contains gear teeth within a casing that mesh to transport liquid at relatively high back pressures.

The defining structural characteristic is the gear mechanism with meshing teeth contained within a casing. This differentiates gear pumps from all other pump types which use different mechanisms (impellers, pistons, screws, etc.). The gear meshing also provides the reverse flow seal capability mentioned in POSC Caesar.
4 Necessary PartsPartes Necessárias
Part classParentRelation
PumpCasingMaterialArtifacthasComponentPartAtAllTimes
These are the minimal necessary components that every gear pump must have - the gear mechanism for pumping action, the casing to contain it, and inlet/outlet ports for fluid flow.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'LiquidPortion', 'count': 1, 'constraints': 'any liquid compatible with pump materials'}
OutputsSaídas
{'type': 'LiquidPortion', 'count': 1, 'constraints': 'same liquid at higher pressure'}
TransformationTransformação
mechanical energy added to liquid via gear meshing action
Gear pumps take in liquid at lower pressure and discharge it at higher pressure through the positive displacement action of meshing gears. The gear mechanism provides both pumping action and reverse flow sealing.
Disjoint WithDisjunto com
CentrifugalPump
C1: CentrifugalPump. Gear pumps use meshing gears as the pumping mechanism, which is incompatible with centrifugal impellers or reciprocating pistons/plungers. These represent fundamentally different mechanical approaches to liquid pumping.
MetadataMetadados
COPI IDCOPI IDCOPI_0000289
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000289
StatusStatusexported
Axiom modeModonecessary
CreatedCriado2026-04-16
UpdatedAtualizado2026-06-28
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13
ISA 5.1-2022 — wikimedia/pump.svg
Quick factsDados rápidos
GenusGêneroPump
Root classClasse raizAssembly
Axiom modeModonecessary
FunctionFunçãoPumpingFunction
ProcessProcessoPumpingProcess
PartsPartes1
Source DefinitionsDefinições nas Fontes 2 sources
ISO 15926-4 GEAR PUMP
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
POSC Caesar Gear Pump
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.