Vacuum filters of DOO type
- Vacuum-filters for concentrates of 2-5 t/m³ density.
Rudgormash and “Engineering filtr” experts had designed a new construction of disc vacuum filters that provided the basis for the modern locally-produced vacuum filters with high automation and a wide range of models. Ergonomics of engineering solutions provides comfortable operation and maintainance. The new construction is also applied in tubular shafts for functioning filters DSH to provide efficiency improvement.
The foundation of this new development were technical and technological researches of a disc vacuum filter operation and the foreign experience of filter-composition, the creation of a new composition material and advanced polymer technology. This provided the extension of a technology cycle and inter-repair period and reduction of operational and repair expenditures.
Disc vacuum filters and tubular shafts for vacuum filters DSH are applied for separation of neutral and slightly aggressive suspensions (рН= 4÷11) of 2÷60°С in temperature and with particles of solid phase of fairly homogenous size.
The field of application is represented by mining, chemical and coal industries, ferrous and non-ferrous steel industries.
The basic distinctive feature of Rudgormash vacuum filters is the prompt impulse blowing off the sink which is independent from a disc rotation frequency. The physical significance is an injection of compressed air in minimal volumes and in a short period of time.
Due to the minimal volumes of compressed air we can observe slight extension of filter fabric sufficient for blowing down the sink. Thus the frequency of filter fabric breaks diminishes and increases its durability. The compressed air consumption lowers as well as the energy consumption.
Due to a very short period of blowing it can be done at any level of a disc rotation frequency. Besides, the blowing process switches on by non-contact electromagnetic indicators with a fast response time.
Another distinctive feature is the possibility of blowing with compressed air of high pressure (up to 6kg/sm²). It is also possible to conduct several impulses of blowing during a single cycle and as a result to partially regenerate the filter fabric.
One more distinctive feature of Rudgormash vacuum-filters is the application of a filter fabric washing device in sectors during periodic filter shutdowns. This also affects the restorative function of the filter fabric and can be taken for a partial regeneration with an interval of 150-200 motor hours of filter work.
High level of automation presupposes monitoring and control of filtrating and dewatering processes by controller units of foreign and home manufacture which allows to totally automatize the vacuum-filter operation and plug into SCADA system.
A wide range of blowing valves (of different sizes and type of control), shaft drives and mixer drives (of different construction and rotation frequency) are offered for vacuum filters in accordance with customers requirements and type of the processed concentrates.
Processing of minerals has its unique aspects in various segments of industry that determine specific requirements for filtrating equipment subject to the density of a filtered material or request for an additional application of a ventilation hood or a hip roof and etc.
Vacuum filters are the basic equipment of a filtrating unit that is represented by a system of machines for technological dehydration of a mined concentrate in a processing industry.
Rudgormash vacuum-filters can be divided in two types depending on the density of the processed meterial : vacuum filters for concentrates of 2-5t/m³ density and vacuum filters for concentrates of up to 2t/m³ density.
The auxiliary equipment for filter units consist of receive and catch tanks, vacuum pumps, air blowers, compressors and etc.
Receive and catch tanks by Rudgormash brand are combined into a set of auxiliary equipment that also differ in construction and quantity.
We can supply the receive and catch tanks as a single-peace upon customer’s requests.
Vacuum pumps, air blowers (or compressors) for Rudgormash production are an auxiliary equipment for vacuum filters and they can be supplied as an addition to Rudgormash equipment upon customer’s requests.
Tubular shafts of Rudgormash are fit for bathes and drives of the manufactured DSH filters.
The set of supply includes automated centralized system of consistent lubrication of all rubbing surfaces of the tubular shaft itself.
Upon customer’s request we can supply an additional and axillary equipment, a blowing system of corresponding pressure, a lubricating system for the whole filter and an automatic pulp level control system for a bath.