Rotary multi-stage pump structure and principle

Rotary multi-stage pump rotor rotor with a certain eccentricity in the multi-stage pump housing and pump housing fixed surface close to the surface, the rotor groove with two (or more) rotary blade, when the rotor rotates The vane can slide back and forth along its radial groove and always contact with the inner wall of the casing. The vane rotates with the rotor to divide the pump chamber into several variable volumes. Rotary vane pump is a low multi-stage pump. It can be used alone or as a foreline pump for other high vacuum pumps or ultra-high multi-stage pumps. Rotary multi-stage pump for small and medium-sized pump, the product has been serialized. Rotary vane pump has a single-stage and two-stage, generally made more than two-stage, in order to obtain a higher pump. Rotary multi-stage pump is the vast majority of single-chamber structure, commonly used two radial vane, but also useful for three inclined vane. Multi-stage pump through the vane also has applications.

High Speed Door

High speed shutter door is a rapid operating, anti-crash shutter door for indoor application . The most advantage of this door is that the opening/closing speed can reach to 0.6-1.8m/s, really fast action a lot than tranditional rollling shutter door. short opening and closing times reduce cooling loss, avoid airflow and enable a smooth operating procedure. They can also be designed in larger dimensions for the mining and aircraft industries.

High speed door can be easily installed, economical,quiet and efficient with electromechanical drive.

This door quickly though in/out open gate, ideal for warehouses,factories, hangars use, widths can be from 2m to 20 meters.

The material of this door are variety: PVC curtain to keep the insdie clean, heavy duty aluminum door with wind-resisitant function can wrok in heavy windy weather, and also the freezer door can be used in cold warehouse or somewhere like that.

Including models are:PVC High Speed Door, Aluminum Spiral High Speed Door, Self-Recovery repair door, Cold Storage Room Fast Door.

High Speed Door,PVC High Speed Door,Aluminum High Speed Door,Spiral High Speed Door

Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.selfrepairinghighspeeddoor.com