Seven Reasons Affecting Insufficient Vacuum Levels in Shandong Vacuum Pumps
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发布时间： 2022-12-19
概要： Seven Reasons for Insufficient Vacuum in Shandong Vacuum Pumps: 1. The impeller of the Shandong vacuum pump is damaged, resulting in insufficient contact area when rubbing against the cylinder head and thus leading to inadequate vacuum levels. 2. The cylinder head is damaged, potentially causing internal cavities within the cylinder head to become impaired and consequently reducing the vacuum level. 3. The rotor of the motor has shifted. Misalignment between the motor rotor and the bearing end cover during installation can cause insufficient vacuum; this issue can be corrected by having the manufacturer perform calibration. 4. Steam leakage in the Shandong vacuum pump. After prolonged use, the sealing gaskets may age, leading to steam leakage and a drop in vacuum levels. 5. There may be an issue with the motor itself. If the motor speed is abnormal, its pumping rate will slow down, which could result in insufficient vacuum. 6. Emulsification or carbonization of the vacuum pump oil. If the vacuum pump is not regularly disassembled and maintained manually over a long period of use, the vacuum pump oil may become emulsified or carbonized, potentially causing damage to the pump’s cylinder head, blockage of oil lines, clogging of oil filters, and other related problems.
Seven reasons why the vacuum pump in Shandong fails to achieve sufficient vacuum levels
1. The impeller of the Shandong vacuum pump is damaged, and the contact area between it and the cylinder head is too small when they rub against each other, resulting in insufficient vacuum level.
2. If the cylinder head is damaged, the internal cavity of the cylinder head may also be damaged, resulting in insufficient vacuum levels.
3. The motor rotor is misaligned. The installation method required for the motor rotor and the bearing end cover has resulted in a misalignment, leading to insufficient vacuum levels. You can contact the vendor for calibration.
4. The vacuum pump in Shandong is leaking air. After prolonged use, the sealing gasket has aged, causing the vacuum pump to leak and resulting in insufficient vacuum levels.
5. Is there any issue with the motor? If the motor speed is abnormal, the pumping speed will slow down, which may result in insufficient vacuum levels.
6. Emulsification and carbonization of vacuum pump oil in Shandong. If a vacuum pump is used for an extended period without frequent replacement or proper manual maintenance, the vacuum pump oil may become emulsified or carbonized, potentially leading to damage to the pump cylinder head, blockage of oil lines, clogging of oil filters, and a host of other related issues.
7. The oil filter for the vacuum pump in Shandong is blocked or damaged. The vacuum pump oil filter is also referred to as an oil mist separator, oil filter element, or exhaust pipe filter element. If the oil mist separator becomes blocked, the gases drawn into the pump casing will have difficulty escaping. As a result, the internal pressure within the pump body will rise, the pumping speed will decrease, and the vacuum level will drop.
The Basic Principles and Maintenance of Rotary Vane Vacuum Pumps from Shandong
The rotary vane vacuum pump with built-in rotor is a variable-displacement mechanical vacuum pump that generates vacuum by utilizing the rotational motion of the motor rotor and the rotating vanes, which can roll within the slots of the motor rotor. When cutting fluid is used for lubrication and to fill the dead spaces in the pump cavity, thereby sealing off the automatic exhaust valve from the air, this type of pump is commonly referred to as a skeleton-sealed rotary vane vacuum pump. When no cutting fluid is used, the pump becomes a dry-running rotary vane vacuum pump; details on this type will be provided separately. In skeleton-sealed rotary vane vacuum pumps, those driven by synchronous belts are conventionally called "rotary vane vacuum pumps with built-in rotor" in China, whereas pumps directly connected to the motor or linked via a coupling are referred to as "direct-drive rotary vane vacuum pumps." Within each category of pump, there are also distinctions between single-stage and two-stage designs. In single-stage pumps, due to differences in structural design and key parameters, the ultimate vacuum achievable and the intended applications vary. What these pumps have in common is their relatively simple structure, ease of use, ability to start from atmospheric pressure, direct discharge into the atmosphere, small axial forces, and straightforward maintenance.
The root cause of oil leakage in Shandong vacuum pumps
1. Potential issues that may arise during installation include: damage from riveting, which could cause deformation of the skeleton seal; and also, there’s an estimate that the skirt area might get scratched.
2. The elasticity of the oil seal spring does not meet specifications: Oil seal springs vary in material and quality, and torsion springs are particularly likely to become ineffective. This can lead to abnormal damage to the skeleton seal, resulting in oil leakage.
3. The primary cause related to hydraulic oil: The selected hydraulic oil can affect the materials used in skeleton seals, causing them to harden or become loose and develop cracks. An incorrect choice of hydraulic oil may also lead to oil pumping occurring in the vacuum pump’s filtration system.
4. Ineffective Sealing: The vacuum pump’s filtration system has its own sealing mechanism. If the sealing is ineffective, oil leakage is likely to occur—not only at the oil-mist separator at the exhaust port, but also potentially anywhere else where a closed enclosure exists. Therefore, when oil leakage occurs, all sealing components inherent in vacuum technology should be thoroughly inspected.
关键词： Seven Reasons Affecting Insufficient Vacuum Levels in Shandong Vacuum Pumps
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