JB/T 51234-1999
Diaphragm Pump for Sprayer - Product Quality Grading
喷雾机用隔膜泵 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量指标 → 4 试验方法 → 5 抽样方法 → 6 不合格项目分类 → 7 评定规则 → 附录A Foreword → 1 Scope → 2 Normative References → 3 Quality Indicators → 4 Test Methods → 5 Sampling Methods → 6 Classification of Nonconforming Items → 7 Evaluation Rules → Annex A
Scope
This standard specifies the product quality grading indicators, test methods, and inspection rules for diaphragm pumps used in sprayers. This standard applies to the product quality grading of diaphragm pumps (hereinafter referred to as pumps) for conveying liquid pesticides and industrial water.
本标准规定了喷雾机用隔膜泵的产品质量分等指标、试验方法和检验规则。本标准适用于输送液体农药及工业用水的隔膜泵（以下简称泵）的产品质量分等。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies of diaphragm pumps for sprayers use this standard to assess product quality grades. They rely on the indicators and test methods in this standard to evaluate pump performance, reliability, and appearance. This standard ensures consistent product quality, helping agricultural and industrial users select reliable pumps.
喷雾机用隔膜泵的制造商和质检机构使用本标准来评定产品质量等级。他们依据本标准中的指标和试验方法，对泵的性能、可靠性和外观进行检测和分级。该标准确保了泵的质量一致性，为农业和工业用户选择可靠产品提供了依据。
AI Summary AI generated
This standard specifies product quality grading indicators, test methods, and inspection rules for diaphragm pumps used in sprayers, applicable to pumps conveying liquid pesticides and industrial water. Quality grades include qualified, first-class, and premium products, covering performance indicators such as volumetric efficiency, total efficiency, oil temperature, cleanliness, and noise, as well as reliability (mean time to first failure and availability) and appearance requirements. Test methods cover operational performance, reliability, and cleanliness. Sampling follows GB/T 2828, and nonconforming items are classified into categories A, B, and C, with evaluation based on item-by-item assessment.
本标准规定了喷雾机用隔膜泵的产品质量分等指标、试验方法和检验规则，适用于输送液体农药及工业用水的隔膜泵。质量分等分为合格品、一等品和优等品，涵盖容积效率、总效率、机油温度、清洁度、噪声等性能指标，以及可靠性（首次故障前平均工作时间和有效度）和外观质量要求。试验方法包括运转性能、可靠性、清洁度等测试，抽样按GB/T 2828进行，不合格项目分为A、B、C三类，采用逐项考核定等。
Key Sentences extracted from text
本标准规定了喷雾机用隔膜泵的产品质量分等指标、试验方法和检验规则。
泵产品质量分等指标分为合格品、一等品和优等品。
泵在额定工况下，其首次故障前平均工作时间应符合表3规定。
泵在额定工况下，进行300 h台架试验，其有效度应达到表4规定。
采用随机抽样方法，在工厂近六个月生产的产品中随机抽取2台套，供抽样的产品库存量不得少于20台套。
This standard specifies the product quality grading indicators, test methods, and inspection rules for diaphragm pumps used in sprayers.
The product quality grading indicators for pumps are divided into qualified product, first-class product, and premium product.
Under rated conditions, the mean time to first failure of the pump shall comply with the provisions of Table 3.
Under rated conditions, the pump shall undergo a 300-hour bench test, and its availability shall meet the requirements of Table 4.
Using a random sampling method, randomly select 2 sets from products manufactured within the last six months; the inventory of products available for sampling shall not be less than 20 sets.
Standard Timeline
Changes from replaced version:
- 标准名称由《ZMB 系列中压活塞隔膜泵 产品质量分等》改为《喷雾机用隔膜泵 产品质量分等》
- 增加了泵机油温度指标，取消了工作压力、额定转速参数的分等规定
- “连续运转试验”改为“首次故障前平均工作时间的测定”，补充了定时截尾时间的规定
- “300 h 台架试验”项目改为“有效度测定”
- Standard name changed from 'ZMB Series Medium Pressure Piston Diaphragm Pump - Product Quality Grading' to 'Diaphragm Pump for Sprayer - Product Quality Grading'
- Added pump oil temperature indicator; removed grading provisions for working pressure and rated speed parameters
- Changed 'continuous operation test' to 'determination of mean time to first failure', supplemented provisions for timed truncation
- Changed '300 h bench test' item to 'availability determination'