JB/T 53304-1999
Small magnetic drive centrifugal pump - Product quality grading (Internal use)
小型磁力传动离心泵 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 产品的质量等级 → 4 试验与检验方法 → 5 抽样、评定方法 → 附录A 用户使用报告 Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grades → 4 Test and Inspection Methods → 5 Sampling and Evaluation Methods → Annex A User Usage Report
Scope
This standard specifies the quality grades, test and inspection methods, and sampling and evaluation methods for small magnetic drive centrifugal pump products. This standard applies to small magnetic drive centrifugal pumps for conveying corrosive or flammable, explosive, volatile liquids.
本标准规定了小型磁力传动离心泵产品的质量等级、试验与检验方法和抽样、评定方法。 本标准适用于输送腐蚀性或易燃、易爆、易挥发液体的小型磁力传动离心泵。
Normative References
Keywords
Application Summary AI generated
Pump manufacturers and quality inspection agencies use this standard to grade the quality of small magnetic drive centrifugal pumps into qualified, first-class, and premium levels. It sets key technical indicators such as efficiency, vibration, and noise to ensure reliability and safety when handling corrosive or flammable liquids. This standard helps unify product quality requirements and improve industry standards.
泵制造厂和质检机构使用本标准来评定小型磁力传动离心泵的质量等级，包括合格品、一等品和优等品。它通过规定效率、振动、噪声等关键指标，确保产品在输送腐蚀性或易燃易爆液体时的可靠性和安全性。该标准有助于统一产品质量要求，提升行业整体水平。
AI Summary AI generated
This standard JB/T 53304-1999 specifies quality grades (qualified, first-class, premium), test and inspection methods, and sampling and evaluation methods for small magnetic drive centrifugal pumps. It applies to pumps conveying corrosive or flammable/explosive liquids. Key assessment items include flow rate, head, efficiency, vibration, noise, and first overhaul period. It replaces JB/T 53304-94, removing the 'average efficiency drop per thousand hours' item and updating the standard name.
本标准JB/T 53304-1999规定了小型磁力传动离心泵的质量等级（合格品、一等品、优等品）、试验与检验方法以及抽样评定方法。适用于输送腐蚀性或易燃易爆液体的泵。主要考核项目包括流量、扬程、效率、振动、噪声和首次大修期等。标准代替了JB/T 53304-94，删除了千小时效率平均降低值考核项目，并调整了标准名称。
Key Sentences extracted from text
产品根据质量水平和使用价值分为合格品、一等品和优等品三个等级。
产品应符合JB/T 7742 的规定，其中主要考核项目及要求应符合表1 的规定，评定产品质量等级的考核项目、指标和要求应符合表2 的规定。
批量产品应首先进行单个产品的质量等级评定，判定单个产品的质量等级应符合该等级全部考核项目的要求，否则按达到的最低一项指标定等。
采取全数检查方法时，当所有产品达到合格品时，该批产品才能评为合格品；当达到一等品或优等品的数量占总数70%以上，且其余产品达到合格品时，该批产品才能评为一等品或优等品。
采取抽样检查方法时，可按JB/T 8687 规定的合格判定数Ac（或A1、A2）和不合格判定数Re（或R1、R2）评定该批产品达到某一等级（合格品、一等品或优等品）。
Products are divided into three grades: qualified product, first-class product, and premium product based on quality level and use value.
Products shall comply with the provisions of JB/T 7742, where the main assessment items and requirements shall comply with Table 1, and the assessment items, indicators, and requirements for evaluating product quality grades shall comply with Table 2.
Batch products shall first undergo individual product quality grade evaluation, and the quality grade of an individual product shall meet the requirements of all assessment items for that grade; otherwise, it shall be graded according to the lowest indicator achieved.
When using full inspection method, the batch can only be rated as qualified if all products are qualified; if the number of first-class or premium products accounts for more than 70% of the total and the remaining products are qualified, the batch can be rated as first-class or premium.
When using sampling inspection method, the batch can be evaluated as reaching a certain grade (qualified, first-class, or premium) according to the acceptance number Ac (or A1, A2) and rejection number Re (or R1, R2) specified in JB/T 8687.
Standard Timeline
Changes from replaced version:
- 删除了“千小时效率平均降低值”考核项目
- 将产品标准中规定的流量、扬程、汽蚀余量、泵用材料、装配、涂漆和外观及包装等主要考核项目及要求列入表1中
- 标准名称原为《小型磁力驱动离心泵 产品质量分等》，由于产品标准中“驱动”改为“传动”，因此本标准作了相应修改
- Deleted the assessment item 'average efficiency drop per thousand hours'
- Listed the main assessment items and requirements such as flow rate, head, NPSH, pump materials, assembly, painting, appearance, and packaging from the product standard into Table 1
- The original standard name was 'Small magnetic drive centrifugal pump - Product quality grading', but due to the change from 'drive' to 'transmission' in the product standard, this standard was revised accordingly