Van quay

Van quay

Rotary valves (còn được gọi là khóa gió quay, máy cấp liệu quay, vân vân.) là các van khí nén xử lý và đo lưu lượng của khối hạt hoặc bột. Vật liệu được đưa vào van thông qua phễu (xem hình 1) hoặc các cửa vào khác, được xử lý thông qua rôto van, và sau đó được đưa lên hệ thống băng tải theo từng gói riêng biệt, all with minimal pressure loss. They are most often used in air conveyor systems to minimize the loss of pressure across the valve, but rotary valves are also used to meter materials at a controlled feed rate. They work almost exclusively in air systems and function as airlocks, explosion/flame barriers, and process isolators, among other tasks. They can move dry to slightly sticky products, and find many applications in chemical and food, pharmaceutical, plastic, and other manufacturing markets.

Loại: Van quay

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GIỚI THIỆU

Rotary valves are composed of 4 main components: an outer housing, a rotor, a rotor bearing and seal, and a drive. The housing is the rightmost component in Figure 2 and provides the inlet/outlet ports as well as the protective pathway for material through the valve. The rotor is held in place by the rotor bearing, and material is sealed within the valve inner housing via the bearing and shaft seal. The drive mechanism (typically an electric motor) attaches to the rotor shaft from the outside and controls the rotation speed and direction of the rotor. Product is fed into the valve, captured into equal pockets between rotor vanes, and is dispensed in even amounts at the outlets. These rotor vanes have a tight clearance with the housing and prevent pressure losses/material losses through the valve, ensuring pressure differentials remain intact.

The high-pressure gas can be used to seal the central shaft of the unloader to ensure that the ultra-fine powder will not be precipitated from the gap between the equipment and the central shaft.

ỨNG DỤNG

Rotary valves are used in almost all pneumatic conveyor systems, but they also find uses in many other applications. This section will display just how indispensable these valves are, and how they can still find new uses.

Some notable applications of rotary valves are:

Food and chemical processing applications
Pharmaceutical manufacturing applications
Abrasive product conveyance/metering
Plastics manufacturing
Frequently cleaned/abiotic applications
Pneumatic conveyance

DIFFERENT TYPES

According to different use occasions and use requirements, the unloader can be made into various special forms to facilitate the user’s later operation.