A volumetric feeder is a feeding device that delivers a fixed volume of material to the interior of a target tank. It is widely used in powder batching processes such as plastic pellets, powders, calcium carbonate, talc powder, resin film powder pellets, flour, starch, etc. According to the difference in material flowability, it is recommended to use a single screw volumetric feeder for materials with good flowability, and a twin-screw volumetric feeder for materials with poor flowability. The volumetric feeder provides a low-cost and simple feeding solution for continuous and intermittent feeding applications, provided that the material has a uniform packing density and the quality of the final product does not require strict feeding accuracy.

At Ruida Machinery, we provide you with reliable volumetric feeders. Single screw volumetric feeders are the choice for materials with good flowability, while twin-screw volumetric feeders are the choice for solid materials with poor flowability and difficult feeding. To cater to a wide range of feeding volumes, we offer a variety of different models of volumetric feeders and hopper sizes for you to choose from.

Single screw volumetric feeder

Ruida Machinery's single screw volumetric feeder can be used for feeding large, small particles and powders with good flowability.

According to the different materials, the single screw volumetric feeder has many interchangeable screws to choose from. The feeder is installed on a painted steel base, and all parts in contact with the material are made of stainless steel. The feeder is easy to disassemble, clean or replace components. The unique spherical hopper design ensures that materials flow evenly from all directions into the screw, effectively preventing material accumulation. Horizontal mixing further improves the flow of materials towards the screw propulsion section, making feeding more precise.

The feeding screw is selected based on the characteristics of the material. The above table shows the empirical values of the feeding range (applicable to materials with good fluidity). For those located at both ends of the feeding range, it is recommended to test and select the appropriate screw.

Twin screw volumetric feeder

Ruida Machinery's twin-screw volumetric feeder is widely applicable to various materials, including providing volumetric feeding solutions for powder, fiber, and sheet materials with poor flowability.

All components in contact with the material are made of stainless steel. This feeder is easy to clean and replace components. The unique spherical hopper design ensures that materials flow evenly from all directions into the screw, effectively preventing material accumulation. Horizontal mixing further improves the flow of materials towards the screw propulsion section, making feeding more precise. When feeding materials with poor fluidity and easy bridging, vertical mixing can also be considered.

The feeding screw is selected based on the characteristics of the material. The following table shows the empirical values of the feeding range (applicable to materials with good fluidity). For those located at both ends of the feeding range, it is recommended to test and select the appropriate screw.

Advantages and Characteristics:

1. Provide users with low-cost feeding solutions without strict requirements for feeding accuracy.

2. The feeding part is easy to disassemble, clean, replace, and maintain.

3. Horizontal mixing combined with optional vertical mixing design, with high anti bridging performance.

4. Different models adopt universal screw interfaces, which can facilitate the replacement of different types of screws and achieve a wider feeding range for one device.