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E-mail
jwdry8166@163.com
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Phone
13915898166
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Address
Jiaoxi Industrial Park, Zhenglu Town, Tianning District, Changzhou City, Jiangsu Province
Changzhou Jinwang Drying Equipment Co., Ltd
jwdry8166@163.com
13915898166
Jiaoxi Industrial Park, Zhenglu Town, Tianning District, Changzhou City, Jiangsu Province
| Fault phenomenon | Possible reasons (self inspection sequence) | Simple processing method |
|---|---|---|
| Insufficient vacuum degree or inability to draw up | 1. Poor sealingWear of packing seal/mechanical seal; The inlet/outlet, sight glass, and valve are not tightly closed or the gasket is aging. 2. vacuum pump failureInsufficient oil level, deterioration of oil quality, and accumulation of scale inside the pump. 3. Material issuesThe material contains too much solvent and bubbles, entering the vacuum system. | 1. Leak detectionApply soapy water to each suspected leak point (flange, valve, shaft seal) and observe for bubbling. Tighten bolts or replace gaskets/seals. 2. Pump inspectionAdd oil or replace the vacuum pump oil, and clean the filter screen inside the pump. 3. process adjustmentReduce the heating temperature appropriately or turn on the condenser to recover the solvent. |
| The host produces abnormal noise or vibration during operation | 1. Rake tooth problemThe rake teeth are loose, deformed, or scraped against the inner wall. 2. Bearing damageThe main shaft bearing is short of oil or worn. 3. Material clumpingA large piece of hard material is stuck on the rake blade. | 1. Immediately stop the machine for inspectionCheck whether the fixing bolts of the rake teeth are loose, whether the rake teeth are deformed, and calibrate or tighten them when entering the cylinder. 2. Check the temperature of the bearing seat, listen for sound, and if necessary, contact to replace the bearing and add lubricating grease. 3. Clean up clumped materials, adjust the feeding status or add crushing processes. |
| Slow drying speed and decreased efficiency | 1. Insufficient heatingLow temperature/pressure of the heat medium; Scaling of jacket or coil; The drain valve is blocked. 2. Low vacuum degreeSee the previous article. 3. Material issuesThe material layer is too thick or the viscosity is too high. | 1. Check the heat medium supply system, clean the heating surface, and clear or replace the drain valve. 2. Solve the problem of vacuum leakage. 3. Optimize the feed rate or increase the mixing speed within the permitted range. |
| Difficulty in discharging or residual material | 1. Rake teeth wear and tearThe gap with the bottom is too large, and the pushing force is insufficient. 2. Unloading valve issuePneumatic valve cylinder failure, valve plate material. 3. Material sticking to the wallProduct characteristics or incomplete cleaning. | 1. Check the wear of the rake teeth and adjust or replace them if necessary. 2. Check the air source pressure, clean the accumulated material at the valve plate, and lubricate the cylinder. 3. Improve the cleaning procedure or adjust the formula when the process allows to reduce stickiness. |
| Leakage at the shaft seal | 1. packing sealPacking wear or insufficient clamping force. 2. mechanical sealSealing surface wear, spring failure, insufficient coolant. | 1. packing sealUniformly compress the packing gland or replace it with new packing. 2. mechanical sealCheck if the cooling water is unobstructed and contact professionals to replace the mechanical seals. |