真空上料機性能測試需遵循系統(tǒng)化的技術規(guī)范，重點涵蓋以下核心指標及測試方法：

　　The performance testing of vacuum feeding machines should follow systematic technical specifications, focusing on the following core indicators and testing methods:

　　一、真空度與負壓穩(wěn)定性測試

　　1、 Vacuum degree and negative pressure stability test

　　極限真空度測試

　　Extreme vacuum test

　　采用真空表或真空傳感器（精度等級≤0.5% FS）連接設備進氣口，啟動真空泵后記錄穩(wěn)定狀態(tài)下的真空度值。測試應持續(xù) 30 分鐘以上，確保真空度波動不超過 ±1kPa。對于設計真空度≥-0.08MPa 的設備，實測值需達到設計值的 95% 以上。

　　Connect the equipment inlet with a vacuum gauge or vacuum sensor (accuracy level ≤ 0.5% FS), start the vacuum pump, and record the stable vacuum degree value. The test should last for more than 30 minutes to ensure that the vacuum fluctuation does not exceed ± 1kPa. For equipment with a designed vacuum degree ≥ -0.08MPa, the measured value must reach 95% or more of the design value.

　　負壓保持能力測試

　　Negative pressure holding ability test

　　在達到設定真空度后關閉真空泵，監(jiān)測系統(tǒng)壓力回升速率。標準要求每小時壓力回升不超過 0.005MPa，特殊工況（如易燃粉體輸送）需控制在 0.003MPa 以內(nèi)。測試過程中需檢查管道、閥門等連接處的密封性，可采用肥皂水涂抹或氦質(zhì)譜檢漏儀輔助檢測。

　　After reaching the set vacuum level, turn off the vacuum pump and monitor the rate of pressure rise in the system. The standard requires that the pressure rise per hour should not exceed 0.005MPa, and special working conditions (such as flammable powder transportation) should be controlled within 0.003MPa. During the testing process, it is necessary to check the sealing of connections such as pipelines and valves. Soap water can be applied or a helium mass spectrometer leak detector can be used for auxiliary testing.

　　二、輸送效率與能耗測試

　　2、 Transportation efficiency and energy consumption testing

　　額定輸送量驗證

　　Verification of rated conveying capacity

　　在標準工況下（如環(huán)境溫度 25℃、物料含水率≤5%），連續(xù)輸送規(guī)定物料（如粒徑≤3mm 的干燥顆粒），記錄單位時間內(nèi)的輸送量。測試時間不少于 30 分鐘，取平均值作為實測輸送效率，要求達到設計值的 90% 以上。對于多規(guī)格設備，需覆蓋最小和最大輸送量工況。

　　Under standard operating conditions (such as ambient temperature of 25 ℃ and material moisture content ≤ 5%), continuously transport specified materials (such as dry particles with particle size ≤ 3mm), and record the transport volume per unit time. The testing time shall not be less than 30 minutes, and the average value shall be taken as the actual measured conveying efficiency, which is required to reach more than 90% of the design value. For multi specification equipment, it is necessary to cover the minimum and maximum conveying capacity conditions.

　　能耗指標測試

　　Energy consumption index testing

　　采用功率分析儀測量設備運行時的輸入功率，計算單位輸送量能耗（kWh/t）。測試需分別記錄空載、50% 負載、滿載三種工況下的能耗數(shù)據(jù)，要求滿載能耗不超過設計值的 110%。對于變頻控制設備，需驗證不同頻率下的能效曲線。

　　Use a power analyzer to measure the input power of the equipment during operation and calculate the energy consumption per unit of delivery (kWh/t). The test needs to record the energy consumption data under three working conditions: no-load, 50% load, and full load. It is required that the energy consumption at full load does not exceed 110% of the design value. For variable frequency control equipment, it is necessary to verify the energy efficiency curves at different frequencies.

　　三、物料適應性與兼容性測試

　　3、 Material adaptability and compatibility testing

　　顆粒特性驗證

　　Particle characteristic verification

　　針對目標物料（如面粉、塑料顆粒），測試其堆積角、堆積密度等參數(shù)。堆積角應≤45°，堆積密度需與設備設計參數(shù)偏差≤±10%。對于易結(jié)塊物料，需模擬受潮狀態(tài)（含水率≤10%）測試輸送流暢性，要求無堵塞或卡料現(xiàn)象。

　　Test the stacking angle, stacking density, and other parameters of target materials such as flour and plastic pellets. The stacking angle should be ≤ 45 °, and the stacking density should deviate from the equipment design parameters by ≤± 10%. For materials that are prone to clumping, it is necessary to simulate a damp state (moisture content ≤ 10%) to test the smoothness of transportation, requiring no blockage or jamming.

　　靜電與防爆性能測試

　　Static electricity and explosion-proof performance testing

　　使用靜電測試儀測量物料在輸送過程中的靜電積累量，要求表面電位≤1kV。對于防爆型設備，需在模擬粉塵爆炸環(huán)境下（如粉塵濃度達到爆炸下限的 50%）測試系統(tǒng)密封性，確保無火花產(chǎn)生且壓力釋放裝置有效動作。

　　Use an electrostatic tester to measure the static accumulation of materials during transportation, with a surface potential requirement of ≤ 1kV. For explosion-proof equipment, the system sealing should be tested in a simulated dust explosion environment (such as when the dust concentration reaches 50% of the lower explosive limit) to ensure that no sparks are generated and the pressure release device is effectively activated.

　　四、運行穩(wěn)定性與噪音測試

　　4、 Stability and noise testing during operation

　　空轉(zhuǎn)與負載運行測試

　　Idle and load running test

　　空轉(zhuǎn)運行 2 小時，監(jiān)測軸承溫升（≤30K）、電機電流波動（≤±5%）及振動值（≤1.5mm/s）。負載運行時，需記錄設備在最大設計負荷下連續(xù)運行 8 小時的穩(wěn)定性，要求無異常振動、異響或過熱現(xiàn)象。

　　Run idle for 2 hours, monitor bearing temperature rise (≤ 30K), motor current fluctuation (≤± 5%), and vibration value (≤ 1.5mm/s). During load operation, it is necessary to record the stability of the equipment running continuously for 8 hours at the maximum design load, without any abnormal vibration, noise, or overheating.

　　噪音水平檢測

　　Noise level detection

　　在距離設備 1m 處、高度 1.2m 位置，使用聲級計測量 A 計權聲壓級。測試需在空載和滿載狀態(tài)下分別進行，要求噪音值≤85dB (A)（室內(nèi)環(huán)境）或≤90dB (A)（室外環(huán)境），并符合 GB 12348《工業(yè)企業(yè)廠界環(huán)境噪聲排放標準》要求。

　　Measure the A-weighted sound pressure level using a sound level meter at a distance of 1 meter and a height of 1.2 meters from the equipment. The test needs to be conducted separately under no-load and full load conditions, with a noise level of ≤ 85dB (A) (indoor environment) or ≤ 90dB (A) (outdoor environment), and in accordance with the requirements of GB 12348 "Emission Standard for Industrial Enterprise Boundary Environmental Noise".

　　五、安全與可靠性測試

　　5、 Safety and reliability testing

　　過載保護功能驗證

　　Overload protection function verification

　　通過模擬電機過載（如堵轉(zhuǎn)）觸發(fā)保護裝置，測試響應時間（≤0.5s）及復位功能。要求保護動作后設備能自動停機，且無機械損傷或電氣故障。

　　By simulating motor overload (such as stalling) triggering the protection device, test the response time (≤ 0.5s) and reset function. Require the equipment to automatically shut down after protective action, without mechanical damage or electrical failure.

　　緊急停機測試

　　Emergency stop test

　　操作急停按鈕，驗證系統(tǒng)在 0.2s 內(nèi)切斷動力源并保持真空狀態(tài)（保壓時間≥10 分鐘）。測試需重復 5 次，確保每次急停后設備無失控或誤動作。

　　Operate the emergency stop button to verify that the system cuts off the power source and maintains a vacuum state within 0.2 seconds (holding time ≥ 10 minutes). The test needs to be repeated 5 times to ensure that the equipment does not lose control or malfunction after each emergency stop.

　　耐久性測試

　　Durability testing

　　進行累計運行 500 小時的耐久性試驗，期間每 100 小時檢查關鍵部件（如真空泵、過濾器、閥門）的磨損情況。要求主要運動部件磨損量≤設計允許值的 20%，密封件無老化或泄漏。

　　Conduct a durability test with a cumulative operation of 500 hours, during which the wear of key components such as vacuum pumps, filters, and valves will be checked every 100 hours. Require the wear of the main moving parts to be less than or equal to 20% of the design allowable value, and the seals to be free from aging or leakage.

　　六、測試實施要點

　　6、 Key points of test implementation

　　測試條件控制

　　Test condition control

　　物料特性：需明確測試物料的名稱、粒度分布、含水率、堆積密度等參數(shù)。

　　Material characteristics: It is necessary to specify the name, particle size distribution, moisture content, bulk density, and other parameters of the tested material.

　　環(huán)境參數(shù)：記錄測試時的環(huán)境溫度、濕度、大氣壓力，確保與設備設計條件一致。

　　Environmental parameters: Record the environmental temperature, humidity, and atmospheric pressure during testing to ensure consistency with the equipment design conditions.

　　儀器校準：所有測試儀器（如真空表、聲級計、功率分析儀）需在有效期內(nèi)校準，精度等級滿足測試要求。

　　Instrument calibration: All testing instruments (such as vacuum meters, sound level meters, power analyzers) must be calibrated within their validity period, and the accuracy level must meet the testing requirements.

　　數(shù)據(jù)記錄與分析

　　Data recording and analysis

　　建立測試日志，記錄每個測試項目的原始數(shù)據(jù)、測試時間及環(huán)境條件。

　　Establish a testing log to record the raw data, testing time, and environmental conditions for each testing project.

　　對重復性測試結(jié)果進行統(tǒng)計分析，計算平均值、標準差及變異系數(shù)，確保數(shù)據(jù)可靠性。

　　Perform statistical analysis on the results of repetitive testing, calculate the mean, standard deviation, and coefficient of variation to ensure data reliability.

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