Vacuum filter units with built-in fans of the VJF series are a versatile and reliable unit for organising an aspiration system for various technological processes that operate in a continuous mode, without the possibility of stopping for filter cleaning. The filters are cleaned by supplying a jet of compressed air to the filter while the filter unit is in operation. This type of plant is ideal for processes that produce fine dust.

• This type of filter plant requires a relatively large volume of compressed and dehumidified air for the regeneration (cleaning) system
• This type of filter plant does not accumulate waste, but requires constant discharge into a pneumatic transport or container.
• Structurally, the filter unit is assembled from panels made of galvanised steel with a thickness of 2-3 mm (optionally made of stainless steel - INOX) and individual components made of structural steel covered with two layers of polymer paint. The modular design allows assembling plants with a nominal capacity of 12.0 to 160.0 thousand m³/h at a vacuum of up to 3500 Pa.
• The unit operates in a vacuum mode, which ensures high energy efficiency and reliability, perfect cleanliness and minimal maintenance time.
• To meet the ATEX explosion protection requirements, the plant is equipped with process hatches, explosion discharge panels, a dry hydrant of the fire extinguishing system and fire protection valves.
• The air is cleaned through bag filters made of antistatic polyester with a density of 550 g/m², with a standard size of F160 mm and a length that varies depending on the model. The filter unit provides a cleaning efficiency of 99.9% for solid particles larger than 10 microns. The designed dust load of the filters ensures long and stable operation of the plant. The purified air is returned to the production room, saving heat energy.
• Aspiration flow and vacuum are provided by built-in high-efficiency fans housed in a noise-insulated casing. Each fan is equipped with a check valve and this solution allows for a stepwise operation of the fans to save electrical energy.
• The filtering plant is equipped with fans of 11.0 kW, 15.0 kW. 18.5 kW, 22.0 kW, depending on the technological requirements for performance and dilution.

The storage silo is a polygonal storage tank in the form of a prefabricated structure made of galvanised steel parts. It is equipped with technological hatches, inspection windows, explosion panels, a dry hydrant of the fire extinguishing system, and lightning protection.

It is designed for accumulation and storage of small wood waste (shavings, sawdust with a moisture content of 8-20%) and automatic batch unloading to the consumer. The model range is represented by silos with a storage volume from 30 to 200 m³.

Main functional elements of the silo:

• Loading system. It consists of a cyclone reloader placed above the storage tank and a rotary sluice. This combination allows loading into the silo by pneumatic transport in a vacuum mode, without creating excessive pressure inside the silo.
• The discharge system ensures that the required amount of waste is discharged to the consumer. It includes a vane-screw agitator to destroy the ‘vaults’ that arise during unloading of the material, elements for relieving the pressure of the material column in the storage part, two unloading windows equipped with rotary gateways to organise two independent waste feeding channels.
• Automatic control system for silo operation. It includes a controller, silo level sensors, and a power electrical cabinet.
• A technological ladder and an observation platform for technological inspections and maintenance.

The vacuum type filtering and storage unit of the PСF series is a universal design that combines all the advantages of a storage silo and a vacuum filtering unit with mechanical cleaning.

Structurally, the unit is assembled from panels made of galvanised steel with a thickness of 2-4 mm (optionally made of stainless steel - INOX) and individual components made of structural steel covered with two layers of polymer paint. The model range includes units with a nominal capacity of 24.0 to 81.0 thousand m³/h at a vacuum of up to 2800 Pa.

• The unit operates in a vacuum mode, which ensures high energy efficiency and reliability, perfect cleanliness and minimal maintenance time.
• To meet the ATEX explosion protection requirements, the plant is equipped with process hatches, explosion discharge panels, a dry hydrant for the fire extinguishing system and fire protection valves.
• The air is cleaned through bag filters made of antistatic polyester with a density of 550 g/m², with a standard size of ∅230 mm and a length of 3000 mm. As an option, filters made of water-repellent polyester material (Antiwasser) can be installed. The filter unit provides a cleaning efficiency of 99.9% for solid particles larger than 10 microns. The designed dust load of the filters ensures long and stable operation of the plant. The purified air is returned to the production room, saving heat energy.
• Aspiration flow and vacuum are provided by built-in high-performance fans housed in a noise-insulated casing. Each fan is equipped with a non-return valve and this solution ensures that the fans operate in steps to save electrical energy.
• The filtering plant is equipped with 11.0 kW and 15.0 kW fans, depending on the technological requirements for productivity and vacuum.
• The storage part (silo) is made in the form of a prefabricated polygonal structure made of galvanised steel parts. It is equipped with technological hatches, inspection windows, explosion panels, a dry hydrant of the fire extinguishing system, and lightning protection.
• It allows the accumulation and storage of small wood waste (shavings, sawdust with a moisture content of 8 - 20%) and portioned unloading to the consumer in automatic mode. The storage volume varies from 30 to 90 m³.