Air shutter

Air shutterThe working principle involves a rotating discharge valve body with multiple blades. The material in the upper hopper falls due to gravity and fills the gaps between the blades. As the rotor rotates, the material is discharged through the lower discharge port. Since the spaces between the rotor blades are uniform, the rotation speed can be either constant or variable. Therefore, the rotating discharge valve is widely used in industries such as environmental protection, metallurgy, chemical, grain, cement, road construction, etc., for unloading, feeding, and metering/packing of powdered and granular materials. What's more, with the development of microcomputer technology, the demand for real-time supply of powdered and granular materials in various industries continues to grow, making the combination of the rotating discharge valve with frequency conversion and speed regulation the most ideal solution for real-time feeding.

Airflow ValveModel:

(One) Standard Type - Code J

Air shutterThe upper and lower flange openings are typically square or round, or can be selected by the customer. Standard models are generally suitable for windless pressure conditions.

(W) Wear-Resistant Impeller Code N indicates

Air shutterThe feature is that the tip of the rotor blades is made of special wear-resistant material, ensuring a good contact between the blade tip and the inner wall of the housing. After wear, it can be easily adjusted to maintain a good contact with the inner wall of the housing. If a sealed rotor is used, it offers better gas locking performance. The wear-resistant type is mainly suitable for materials with strong grinding properties.

(3) High-Temperature Resistant Model; Code H indicates

Air shutterThe material temperature that can be transported reaches up to 280°C, with the bearings at both ends isolated from the impeller to prevent ultra-fine powder from contacting the bearings.

Please provide the following information when purchasing a star-type feeding machine:

1. Is it real-time supply, full supply, or gas lock?

2. Material supply rate: kg/h

Calculation Method for Feed Valve Discharging Capacity

W(m3/h)=V(l/rev.)×N(rpm)×60×η(%)/1000

Discharge Rate (m³/H)

V: Displacement (l/rev)

N: Rotor Speed (rpm)

η: Material filling rate ≤ 100%

Material filling rate selection:

Pelletized Material: η ≈ 0.6 - 0.9

Powder Material: η ≈ 0.5 - 0.8

The above fill rate is for reference only; for some special materials, it is recommended to measure after actual operation.

3. Material conveying properties, name, particle size, bulk density, temperature, moisture content, and angle of repose.

4. Name of the conveyed gas and pressure difference between the top and bottom flanges of the discharge valve.

5. Flange specifications.

Air shutterSelection of:

1、Air shutterPrior to placing an order, it is essential to familiarize yourself with the technical specifications, installation dimensions, speed, and application range of this product to select the most suitable accessories to avoid unnecessary losses.

2、Air shutterIn the instruction manual, the installation dimensions and rotational speeds are our factory's standard. If your company requires special specifications, we can accommodate your needs and design and produce accordingly.

3. The airlock housing is made of standard cast iron, and we can also produce cast stainless steel, aluminum, copper, ball mill cast iron, welded casings, etc. Additionally, we can supply special material downstream valves for specific industries and environments, such as the special material Inconel 600 used in the chlor-alkali industry.

4. The shutdown fan is equipped with a standard Y-series general motor, and can also be matched with explosion-proof motors, speed control motors, inverters, etc. according to the actual needs of the user.

Product Description:

Air valveThe working principle involves a rotating discharge valve rotor with multiple blades inside. Materials in the upper storage bin fall due to gravity, filling the gaps between the blades. As the rotor rotates, the materials are discharged through the lower outlet.