Solution for high pressure gear pump suction air failure

The installation position of the high-pressure gear pump is too high from the oil level, especially when the pump speed is lowered, because the pump suction chamber cannot guarantee the necessary vacuum to cause insufficient oil absorption to draw in air. At this time, the relative height of the pump and the oil surface should be adjusted to meet the specified requirements. The solution for the high-pressure gear pump suction air failure is too high for the installation position of the high-pressure gear pump, especially when the pump speed is reduced. The pump suction chamber has the necessary vacuum to cause insufficient oil absorption to draw in air. At this time, the relative height of the pump and the oil surface should be adjusted to meet the specified requirements.
Inhaled air is a common fault in high-pressure gear pumps. The following are ways to eliminate the inhalation air:
1. The installation position of the gear oil pump is too high from the oil level, especially when the pump speed is reduced, because the pump suction chamber cannot guarantee the vacuum degree necessary to absorb the air. At this time, the relative height of the pump and the oil surface should be adjusted to meet the specified requirements.
2. The oil in the fuel tank is not enough, or the suction pipe is not inserted below the oil surface, the pump will take in the air. At this time, the oil should be replenished to the oil mark; if the oil return is exposed, sometimes Because of the instantaneous negative pressure in the system, the air is backed into the system, so the return pipe should generally be inserted below the oil level.
3. The pump body of the CB-B high-pressure gear pump is in direct contact with the two end caps. If the flatness of the contact surface does not meet the specified requirements, the pump will easily inhale air during operation; likewise, the pump end The cover is also in direct contact with the gland, and the air is also easily invaded; if the gland is a plastic product, it may be deformed due to damage or deformation due to temperature changes, and the air may enter the air. The way to eliminate this kind of failure is: when the flatness of the pump body or the pump cover does not meet the specified requirements, it can be grinded back and forth on the flat plate with grit sand by a glyph route, or it can be ground on a surface grinder to make it The flatness does not exceed 5μm. Botaibang needs to ensure the verticality of its plane and hole. For the leakage of the pump cover and the gland, it can be sealed by applying adhesive such as epoxy resin.
4. The high pressure gear pump generally seals the pump shaft with a skeleton oil seal. If the spring of the clamping lip is detached, or the oil is packaged backwards, or the lip is pulled or aged, the rear end of the oil seal is often under negative pressure and the air is taken in. Generally, the new oil seal can be replaced.
5. The oil suction filter is blocked by dirt or its capacity is too small, resulting in increased suction resistance and inhalation of air. In addition, the larger diameter of the inlet and outlet ports may also bring in air. At this time, the oil filter can be cleaned, or an oil filter with a larger capacity and an appropriate diameter of the inlet and outlet can be selected. In this way, the high-pressure gear pump not only prevents the intake of air, but also prevents noise.













Product/






://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn

3025 Phenolic Cotton Cloth Rod made up of cotton saturated with phenolic resin, and are laminated under pressure and heat. This kind o thermoset composite material has been proved to be perfect for parts requiring outstanding mechanical strength and electrical properties for machinery, electric motor and electrical appliance.


Applications :

• Electric equipments

• Aeronautical industries

• Insulating structural components

• Motor and electric appliances

 

Key Features :

• Excellent physical, mechanical and dielectric properties

• Withstand all kinds of machining

• Excellent machinability

• Mechanical properties and electric properties

8

phenolic cotton laminated rod03



3025 Phenolic Cotton Laminated Rod

Phenolic Cotton Cloth Rod, Brown Cotton Rod, 3025 Cotton Rod, 3025 Phenolic Paper Laminated Rod

SHENZHEN XIONGYIHUA PLASTIC INSULATION LTD , https://www.xyhplastic.com