Based on previous conversations, the following key aspects of daily maintenance for disc vacuum filters have been detailed and consolidated into a systematic operating guide:
1. Equipment Cleaning and Maintenance
Surface Cleaning: After daily shutdown, wipe the equipment exterior with a dust-free cloth, focusing on areas prone to dust accumulation, such as the motor heat dissipation vents and control panel, to prevent dust from affecting heat dissipation or circuitry.
Filter Disc Deep Cleaning: After each shift, remove the filter disc and backwash the filter pores with a high-pressure water jet (pressure ≤ 8 MPa). Stubborn clumps should be removed with a nylon brush. Scraping with metal tools is strictly prohibited to prevent damage to the surface coating.
Drainage System Inspection: Clean the filtrate collection tank and drainage pipes to prevent clogging with sediment, which could cause filtrate backflow and contaminate the filter cloth.
2. Filter Cloth Condition Management
Real-Time Monitoring: Observe the uniformity of the filter cloth's water permeability during operation. Immediately shut down and inspect any areas of whitening or a decrease in permeability of more than 20%.
Replacement criteria: Requires mandatory replacement if a hole with a diameter greater than 3mm appears, a continuous tear of more than 5cm appears, or the dehydration efficiency remains below 80% of the initial value after three chemical cleanings.
Cleaning instructions: Soak alkaline stains in a 5% sodium carbonate solution for 30 minutes. Organic stains should be ultrasonically cleaned with acetone. After cleaning, the filter cloth must be tested for tensile strength retention of ≥90%.
3. Vacuum System Maintenance
Vacuum Pump Maintenance: Check the oil level weekly (to 2/3 of the sight glass). Replace immediately if the oil is turbid or contains metal particles (ISO VG68 oil is recommended).
Seal Testing: Apply soapy water to the flange joints monthly. Persistent bubbles indicate deterioration of the seals and require replacement.
Anti-freeze measures: Drain the pump body during winter shutdown. Install heating cables to prevent freezing in temperatures below -10°C.
4. Drive System Maintenance
Vibration Monitoring: Regularly check the motor bearing vibration using a vibration meter. If the vibration exceeds 4.5mm/s, adjust the coupling alignment.
Belt maintenance: A new belt needs to be re-tightened after 24 hours of operation. The appropriate tension is that the belt sags 10-15mm when pressed by the thumb. If the crack depth exceeds 1mm or the surface is cracked, it needs to be replaced.
5. Lubrication management
Lubrication point list:
Component Lubricant type Cycle Oiling amount standard
Spindle bearing Lithium-based grease (2#) 200 hours Grease gun 2-3 times
Reducer Industrial gear oil (220) First 500 hours Oil level line 1/2
