Methods to prevent oil return from water ring vacuum pump
The methods to prevent oil return in water ring vacuum pumps mainly include the following aspects:
1. Oil level and oil tank management
Isolate oil level: Separate the oil near the exhaust valve from other oils and ensure that the oil level is only slightly higher than the partition wall, which can effectively prevent oil from overflowing or backflowing during the operation of the pump.
Adjust the position of the oil tank: Move the oil tank and exhaust valve to the side to lower the oil level and reduce the amount of oil. This method helps to reduce the accumulation of oil in the pump, thereby reducing the risk of oil return.
2. Seal and component maintenance
Strengthen the seal: Ensure that the shaft seal and static seal are secure and replace them in time. Aging or damage of the seal is one of the main causes of oil return, so regular inspection and replacement of the seal is an important measure to prevent oil return.
Leveling the base and increasing elasticity: Keep the plane of the vacuum pump base flat and increase the elasticity of the valve plate. This helps to reduce vibration and leakage of the pump during operation, thereby reducing the possibility of oil return.
3. Oil hole and pipeline design
Add a pipe to the oil hole: Add a pipe to the oil hole so that the oil level is only slightly higher than the oil inlet. This method can limit the flow range of oil in the pump and prevent too much oil from entering the pump body.
Set up a check valve: Install a check valve mechanism to ensure that the oil inlet hole is automatically closed when the pump is stopped. This prevents the oil from flowing back into the pump body when the pump stops running.
IV. Auxiliary mechanism and operation
Set up an oil pump and auxiliary mechanism: Set up an oil pump and auxiliary mechanism at the pump port to cut off the oil circuit when the pump is stopped. This helps to reduce the amount of oil remaining in the pump and reduce the risk of oil return.
Operating specifications: Strictly abide by the operating specifications during operation to avoid improper operation that causes abnormal increase or decrease in the internal pressure of the pump body, thereby causing oil return.
V. Regular inspection and maintenance
Regular inspection: Regularly inspect and maintain the water ring vacuum pump, including checking the status and performance of components such as oil level, seals, and pipelines.
Timely maintenance: Once leakage, aging or damage of seals are found inside the pump body, relevant parts should be repaired and replaced in time.
