Overall dimensions of PFC dust collection units

Payment Methods:

• By bank transfer for legal entities with VAT.

Delivery in Moscow and Moscow region:

• Transport company Business lines or PEK, others by agreement.
• Goods "in stock" can be picked up from the warehouse on the day the funds are credited to our current account.
• Delivery is carried out within 1-2 business days from the moment your order is ready.

Delivery across Russia:

• Transport company (TK) Business lines or PEK, others by agreement. Delivery to the terminal TK - FREE OF CHARGE. (3 times a week).
• The cost of delivery of shopping malls depends on the region. Our managers will calculate all the options and offer the most convenient and profitable delivery method for you.
• Our vehicles in the shortest possible time. Shipping costs are calculated based on the volume and weight of the shipment.

Warranty

• Our company sells exclusively new goods, which are covered by a factory warranty from 12 months to 36 months.

PFC dust collection units are designed for fine air purification inside small and medium-sized industrial and agricultural premises. They can be used to clean the air from wood dust and suspended chips in the woodworking industry. The highest dust content of the working environment is 15/5 g/m.cub. (in the ratio of large suspended fractions / dust).

The minimum air purity at the outlet of the PFC dust collector is 0.5 mg/m3.

Design features

PFC dust collection units are mobile, produced in the form of a monoblock, delivered to the customer assembled in the manufacturer's packaging.

The main components of the dust collecting unit of the PFC series include the following structural elements:

The body is a load-bearing steel element of a welded structure, on which the rest of the components and parts of the equipment are located. A cyclone element is located in the housing, in which primary gravitational air purification from large suspended particles (the first purification stage) is performed. In the cyclone, the air swirls, due to which the particles, under the action of centrifugal force, are pressed against the walls of the cyclone and settle in the dust collector.

At the bottom of the case is a dust bag, which is removed as it fills to clean and dispose of the collected dust and debris. In the upper part of the housing there is a cassette filter made of class F9 filter paper, where fine air purification takes place (the second stage of purification). In comparison with the filter sleeve (as, for example, in dust collectors and chip extractors PUA-M), the cassette paper filter provides finer cleaning and has a longer resource.

In the basic version, together with the cassette, the unit is equipped with a manual regeneration system for the internal surface, but at the request of the customer, it is possible to retrofit the PFC dust collector with an automatic regeneration system.

Emission of purified air is made directly into the atmosphere of the room. The air is forced to move by a low-noise dust fan mounted on the case. An asynchronous electric motor is used as a drive. The inlet pipe of the fan has a circular cross section and is directed downwards (it is possible to connect an air sleeve or a non-extended air duct).

Manufacturing options

The standard size range of PFC dust installations includes 7 standard models.

Installations for dust and chips PFTs-1250, PFTs-1500 and PFTs-2000 are produced in a single version. The remaining models of PFC dust-collecting units are made in a group version (two cassettes and two dust collectors each).

The choice of the required model is carried out according to the nominal capacity, taking into account the actual operating conditions.

Operating conditions

PFC dust collectors are subject to operation indoors under U2 conditions in accordance with GOST 15150.

Units for ventilation dust collecting UVP (Individual chip extractors of the UVP-IN series) designed to remove and purify air from chips and sawdust and collect waste in storage bags. Chip blowers are designed for use in small enterprises with a small amount of waste generated. The degree of air purification by the installations is 99.9%. The units are used to remove polluted air from individual machines or groups of machines and have an air capacity of up to 7000 m 3 /h. Due to the design features, the distance from the machine to the chip extractor, as a rule, should not exceed 2 m. The unit consists of a housing with a built-in dust fan, filters and waste collectors are attached to the housing with easily removable clamps.

CHARACTERISTICS OF CHIP BLOWERS UVP:

Execution options.

• For air purification from sawdust, shavings, chipboard chips, plastics, etc.
• For air purification from sawdust, dust resulting from the processing of MDF and similar materials on milling machines with an increased filtering area.
  When using the IN series units for air purification from chips, sawdust, dust resulting from the processing of MDF, chipboard, fiberboard and other materials in which the proportion of light fine fraction in the waste composition is relatively high, it is recommended to use filters with an increased filtration area. An increase in the area is necessary to reduce the gas-dust load on the filter material. This prevents deep penetration of dust particles into the material and increases the life of the filter. The units are designed for indoor use.

Types of dust collecting installations

Depending on the physical principle of operation, industrial separators are classified into dry mechanical, wet scrubbers, electroprecipitators and bag filters. Figure 3 shows the classification of separators.

Table 3. Classification of separators

Dry mechanical separators

Dry mechanical separators are one of the most widely used dust collectors in industry. This type of apparatus is characterized by simplicity of design and ease of maintenance and repair. However, in the case of a single application, dry mechanical separators have a low final efficiency. Therefore, the combination of a number of separator types or as multi-stage separators is most common.

Dry mechanical separators are classified according to the type of aeromechanical forces involved. There are gravitational, inertial and centrifugal dust settling chambers.

In gravitational dust settling chambers, particles are deposited due to gravitational forces (Fig. 1). The advantages of this type of apparatus are ease of manufacture and operation. But the efficiency values ​​​​of such installations are small, and the space occupied by them is significant. Therefore, this type of dust collectors is rarely used, except for cases in which they are pre-collectors for other separators, i.e. perform the pre-cleaning function.

Rice. 3. Dust settling chamber: a - the simplest chamber; b - chamber with partitions; c - multi-shelf chamber; 1 - body; 2 - bunkers; 3 - partition; 4 - shelf

The dust settling rate of dry mechanical dust collectors is calculated as follows:

where X h- particle settling velocity, m/s; d h - particle diameter, m; mid- particle density, kg/m 3 ; sg- gas density, kg/m 3 ; g- free fall acceleration, m/s 2 ; about h is the drag coefficient of the particle.

The minimum size of dust particles that will be completely deposited under the influence of gravity is found using Stokes' law using the following relationship:

where V G- volumetric flow rate of gases, m 3 /m; m G - dynamic coefficient of viscosity, Pa s; B, L- width and length of the chamber, m.

The next type of dry dust collectors are inertial dust collectors. In these types of devices, dust particles under the influence of inertial force will move in the same direction and, after a sharp turn, fall into the hopper. Unfortunately, the effectiveness of such devices is small. In chambers with a smooth turn, the smallest hydraulic resistance. With particle sizes of 25-30 µm, the degree of particle trapping reaches 65-80%. Figure 2 shows various types of dust collectors.

Rice. 4. Inertial dust collectors: a - with a partition; b - with a smooth turn of the gas flow; in - with an expanding cone; g - with lateral gas supply

One of the commonly used dust collectors are cyclone dust collectors. Cyclone dust collectors are rarely used separately due to low efficiency. Cases of single use of this type of filters are possible with unsatisfactory functionality or reliability of other types of separators. The following requirements are imposed on cyclone dust collectors: optimal separation efficiency with variable production parameters, taking into account the low requirements for maintenance and repair of permanent installations, resistance to abrasive wear, high temperatures, accumulation of adhering dust, provision of preventive measures against the explosion of flammable dust, small space and others

The main geometric characteristic of this type of apparatus is their diameter. With larger diameters, their throughput decreases. Therefore, cyclones of small diameters (150 - 630 mm) are usually used.

If it is necessary to purify a gas flow with a large throughput, a number of parallel-mounted cyclones with a diameter of 475-2500 mm are used.

To determine the separation efficiency in cyclone separators, the total separation efficiency obtained on the basis of experimental data is calculated. This calculation gives the most accurate result. For higher efficiency, small diameter separators are grouped into blocks consisting of 2 to 12 individual cyclones.

The main advantages of cyclone devices are: 1) the absence of moving parts in the device; 2) reliable operation at gas temperatures up to 500 °C; 3) the possibility of capturing abrasive materials while protecting the internal surfaces of cyclones with special coatings; 4) dry dust collection; 5) almost constant hydraulic resistance of the apparatus; 6) successful operation at high gas pressures; 7) ease of manufacture; 8) maintaining a high fractional cleaning efficiency with an increase in the dust content of gases. The disadvantages are: 1) high hydraulic resistance: 1250 - 1500 Pa; 2) poor capture of particle size< 5 мкм ; 3) невозможность использования для очистки газов от липких загрязнений.

The main types of cyclones are shown in fig. 3:

Rice. 5. The main types of cyclones (for gas supply): a - spiral; b - tangential; in - helical; g, d - axial (socket)

The efficiency of trapping dust particles in a cyclone separator is directly proportional to the gas velocity to the power of S and inversely proportional to the diameter of the device, also to the power of S.

In practice, cylindrical and conical cyclones are most often used. At the same time, cylindrical cyclones are highly productive, and conical ones are highly efficient. The diameter of cylindrical cyclones is not more than 2000 mm, and the diameter of conical cyclones does not exceed 3000 mm.

The hydraulic resistance of single cyclones is determined by the formula:

where X G- gas velocity in an arbitrary section of the apparatus, relative to which the value is calculated about c, m/s; about c is the drag coefficient, which is determined as follows:

where K 1 - coefficient, respectively, equal to 16 for cyclones with a tangential gas inlet and 7.5 - for cyclones with a rosette inlet; h 1 ,b- dimensions of the inlet pipe, m; D TR- diameter of the exhaust pipe, m.

The drag coefficient for group cyclones is calculated from the relationship below:

where about c- coefficient of hydraulic resistance of a single cyclone; D TR- coefficient taking into account additional pressure losses associated with the arrangement of cyclones in a group (table value).

Another type of dry dust collectors are vortex dust collectors. Their main difference from the previous type is the presence of an auxiliary swirling gas flow. Fresh atmospheric air can be used as a secondary gas flow in vortex dust collectors. When using dusty gases as a secondary gas, the productivity of the device increases by 40 - 65% without a noticeable decrease in the cleaning efficiency. The critical diameter of particles completely captured in the dust collector is determined by the formula 15:

where X G- speed of gases in the free section of the apparatus, m/s; H- height of the dust collecting chamber, m; D up- apparatus diameter, m; D tr- diameter of the supply pipe, m; sch- rotation speed, m/s.

Advantages of vortex dust collectors in comparison with cyclone ones:

• 1) higher efficiency of capturing fine dust;
• 2) absence of abrasive wear of internal heating surfaces;
• 3) the possibility of gas purification at higher temperatures due to the use of cold gas;
• 4) the ability to control the separation process by changing the amount of secondary gas. The disadvantages of this type of dust collectors:
• 1) the need to use an additional blowing device;
• 2) increasing the total volume of gases passing through the separator due to secondary air;
• 3) the great complexity of the apparatus in operation.

Below are the characteristic parameters of dry mechanical dust collectors.

Table 4. Characteristic parameters of dry mechanical dust collectors

On the Stankoff.RU website you can buy dust collectors and installations from the world's leading manufacturers. Available and under the order more than 50 models of dust collecting installations at the best prices. Only profitable offers with detailed descriptions and photos.

Industrial dust collectors from Stankoff.RU

Purification of air in industrial premises from gases, abrasive dust, metal and wood shavings is necessary not only to comply with sanitary requirements. The presence of air impurities has a negative impact on the health of employees, leads to a decrease in efficiency and the emergence of occupational diseases. The funds spent on the dust collecting unit are compensated by the healthy atmosphere of the workshop or workshop, good performance and safety of equipment, which often fails due to clogging of mechanisms with fine particles.

Equipping with dust collectors presented in our catalog is a prerequisite for industrial production associated with the use of wood processing equipment. The number of technical processes leading to the accumulation and dispersion of dust include operations related to:

• sawing and profiling wood, plastic and other materials;
• crushing dusty products and loading bulk raw materials;
• operation of sandblasting machines and powder coating.

A special vacuum cleaner for chips is installed when filtering air near one machine or is located in close proximity to a group of equipment. To collect waste, fabric accumulators are used, into which dust enters under the influence of the air flow produced by the fan. Lighter particles settle on the surface of the fabric, while coarse particles accumulate in the dust collector.

The need to buy a chip blower exists in enterprises whose activities are related to the processing of expensive materials. Simultaneously with air purification, the equipment allows for the collection of waste that is returned to the production process. In this case, the dust collection system provides an economical consumption of raw materials and increases the profitability of production.

Principle of operation and main characteristics

The efficiency of the chip blower is determined by the size and composition of dust particles. With a nominal diameter of inclusions not exceeding 5 microns, the apparatus provides filtration with a degree of 83%, and with a particle size of 20 microns, the cleaning quality reaches almost 100 percent. In order to obtain a better result when processing an air stream with fine impurities, special electrostatic filters are used.

The principle of operation of industrial dust collectors from the catalog of our website is based on a change in the direction of movement of suspended particles when they enter the working chamber of the device. Under the influence of inertia, impurities with a larger mass pass through the dust outlet and settle in the lower part of the filtration chamber. The purified air stream is discharged to the outside or re-processed using other equipment.

If high-quality cleaning of a large volume of air mass is required, the work of several dust collectors is used. The equipment installed in parallel effectively copes with filtration, removing not only accumulations of suspended particles, but also gases with high temperature and the presence of aggressive substances in the composition.

Standard industrial dust collectors are available in varieties that allow you to choose a unit with optimal parameters for removing dust particles with a large or fine fraction. In addition to universal models, there are specialized types of equipment that make it possible to clean abrasive dust during the operation of grinding and grinding machines.

Design features and classification of species

Depending on the technological device, the dedusting units that we offer in our store remove contaminants from the air stream using different methods:

1. Dry way It is used to clean the air environment when using simple or vortex cyclones, electrostatic precipitators, dust sedimentation chambers, traps with a rotary or louvered design.
2. wet method cleaning is used in specific production conditions, characterized by high humidity, high temperature, explosion hazard and the risk of fire.

Wet cleaning technology makes it possible to remove contaminants that are in a vapor or gaseous state. The operation of the structure is based on the use of a water filter and an irrigation system. The mass of moistened suspended particles increases and, under the influence of gravity, the contaminants fall into the lower part of the receiving hopper. Wet dust removal systems have the advantage of being highly efficient when dealing with fine contaminants, but the devices are more costly to operate, prone to clogging and poorly resist corrosion when filtering aggressive gases.

Dust collector Cyclone is one of the most common types of devices that use a dry method to clean the air. The removal of suspended particles occurs using centrifugal force or the gravitational method. When polluted air enters the inlet pipe of the unit, the flow begins to rotate under inertial influence. Small inclusions settle on the inner walls and fall into the receiving device of the dust collector. The purified air is discharged into the surrounding space through the exhaust pipe.

The choice of dust collector among the 50 models presented on our website is based on the amount of waste that is generated in the room during a unit of time and the aerodynamic features of the production equipment. The method of dust collection depends entirely on the physical and chemical characteristics of the contaminants, in the analysis of which the most rational cleaning system is selected. It is necessary to take into account the specifics of work operations and select a device with certain technical characteristics for installation in milling or grinding areas. With the optimal combination of suction speed and inlet diameter, the productive operation of the dust collector will be ensured.

If special measures are not taken to remove mechanical waste and dusty air from the working area of ​​the woodworking machine, the surrounding space soon after the start of work becomes unsuitable for a person who is not equipped with personal protective equipment and is extremely fire hazardous. Dust collecting (aspiration) installations are intended to clean the atmosphere of the production premises, to make the work of personnel comfortable and safe.

APPLICATION AREA

Autonomous dust-collecting (aspiration) devices are used in industrial premises, which are impossible or impractical to equip with a centralized air purification and waste disposal system. Such installations are mainly used in areas for the processing of wood and similar materials of small enterprises in the furniture, construction and other industries.

DESIGN FEATURES

Structurally, the scheme for cleaning the mixture of air with chips and sawdust, removed from the machining zone by an exhaust fan that creates a vacuum, is filtering it by passing it through a layer of fabric from which the receiving container is made. The solid component of the mixture separated by the filter is deposited in the lower part of the device, which acts as a waste collector.

The high degree of air purification, reaching 99.9%, frees workers from the need to use personal protective devices (respirators, etc.) and reduces the level of fire danger to the standard level.

The design of most modern woodworking machines provides for the possibility of connecting them to a shop aspiration system or to a dust collection unit.

Dust collecting devices are equipped with both one and several filtering units, consisting of fabric bags located one above the other: a filter and an accumulator. Depending on the volume of waste emitted by the equipment, it is possible to select an installation of the appropriate capacity. As a rule, several emission sources can be connected to one unit.

Many models of dust collectors can be used in vacuum cleaner mode when cleaning the production area.

MAIN ADVANTAGES

Dust collecting installations have become an indispensable element in the organization of woodworking production. Without such devices, it is impossible to fulfill the requirements for working conditions established by sanitary standards and ensure compliance with fire safety standards.