Press vacuum drying chamber for wood

Useful load volume board, 53 mm, m3. 12 Dimensions of the chamber length, m. 7 m width, m. 3 height, m. 3.25 weight, kg. 7000 voltage, V. 380 Power Installed maximum power. 60 average power consumption (el boiler). kWh. 20 average electrical consumption (.

Useful load volume plank, 53 mm, m3. 18 Chamber length, m. 7 Width, m. 3 Height, m. 3.25 weight, kg. 7000 voltage, V. 380 Power Installed maximum power. 60 average electricity consumption (el boiler). kWh. 20 average electricity consumption (.

How the wood is dried

Vacuum drying of wood is carried out in 3 stages.

press, vacuum, drying, chamber, wood

  • Initial. Surface treatment of the timber is done here. Drying takes place by means of heating without vacuum. The temperature inside the chamber is adjusted individually to the type of wood and its thickness;
  • Drying. A special pump is used here to quickly evacuate air masses from the closed space. Thanks to this it is possible to evenly distribute moisture inside the wood fibers. Vacuum pump helps prevent deformation and cracking of the internal contents. Excess liquid evaporates quickly or is discharged through special channels;
  • Air Conditioning. In this case the boards start to cool evenly. In this way they manage to convey strength and endurance. The risk of deformation is reduced during the conditioning phases. After cooling down, carefully remove the lumber from the vacuum tank.

You can control the operability of the device with the help of special sensors and the control panel on the equipment case. In this way the performance of the boards is maintained.

Previously recommended to properly adjust the level of pressure, which will affect the condition of the wooden products. For example, to dry oak, which thickness is more than 30 mm, select a temperature of not less than 85 degrees.

Pressure volume should not be more than 520 kg per 1 sq. м. Drying saw-timbers from this timber will be for 30 days.

Vacuum drying chambers in Russia

Urgent selling vacuum. thermal drying chamber (entire complex) for accelerated and high-quality drying of hardwood. Or exchange it for.

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Autoclave, impregnation drying unit for wood, building materials, poles (transmission line), sleepers (railway). LLC “Original Trade” will produce the installation for.

Vacuum drying chamber IWT Type MD 91/ 3.500 x 18000 Used in excellent condition from the place of location in Germany capacity 83 m? gross.

Production of equipment for high-quality drying of sawn timber. Open Company “MV-Impulse”, is the developer and offers multifunctional.

For sale wood drying chambers UL-1, in working condition. 2pcs.

Vacuum drying chambers for drying lumber with the function of the press. In the chambers implemented a unique vacuum technology, thanks to which.

.Hello! Sold Press-vacuum drying chamber PVSK-6 for all types of wood and timber, loading volume of 5.5 m3 the whole process of drying.

Fill out the terms of reference at: https://goo.gl/forms/XlDfTaofOlysoNog1 or Fill in the ToR form.

Sold wood drying equipment. Unit for drying sawn timber, it is a mobile modular chamber for drying sawn timber and wood.

Vacuum drying chamber is designed for drying boards and beams.Drying is carried out under the vacuum press that gives short-term drying strict.

ISVE Series ES & ESC VARIABLE VACUUM DRYER for semi-finished products ISVE Series ES & ESC dryers are especially recommended for drying semi-finished products.

You need dry timber? You have a flexible production? You have high quality products? You can’t do without a press-vacuum dryer.

Press-vacuum drying chamber for wood. One of the most qualitative types of drying.

Selling Drying Unit DLDM. 1986, 1988 LDDM drying plant. In the presence of 2 pcs. Unit with low operation. Location Bashkiria, Moscow.Ufa.

Press vacuum drying chamber with infrared heating for wood is equipped with automation, membrane rubber lid, vacuum pump.

Vacuum drying chamber NERPA 10B is available for delivery. The camera as well as all other equipment is practically 100% analogous.

M-Impulse LLC, is a developer and offers mobile vacuum press impregnation and drying chambers PVSK, for high-quality impregnation, drying.

Vacuum dryer Kronseder Year of manufacture 04.2003 Length of dryer. 15,7 m Stack sizes. 1,35 x 1,35 m Useful volume. approx. 24,5 m3 Dryer.

Our company is able to complete and manufacture a stationary plant for the use of wood impregnation technology.

Press-vacuum drying chamber for high-quality drying, impregnation and thermal modification of all types of wood. Loading capacity 5 cubic meters.

Vacuum drying unit BC 1 Drying sawn wood and timber of different types of wood in a vacuum chamber. Low consumption.

M-Impulse LLC is a developer and manufacturer of multifunctional, economical, mobile, press vacuum impregnation and drying chambers.

Defect-free drying of hardwood lumber of 25 to 50 mm thickness from 4 days (8 days for oak), as well as softwood.

Vacuum drying chamber is designed for drying boards and beams.Drying is performed under the vacuum press that gives short drying time.

Drying unit SU 60. The revision of the electrical equipment is needed. Good tech. Condition of hydraulics, tanks. V26m. cube. Cost without disassembly.

Selling drying chamber for lumber. Ob capacity 8m3 with a boiler. detailed information by phone Selling drying chamber for lumber.

Vacuum press drying of wood. fast, high quality, low cost. Defect-free drying of sawn timber of hardwood of thickness from 25 to.

Loading from 3 m3. High quality and speed of drying. Easy to operate. Fits in a container by rail or truck. No need for foundation and.

Vacuum drying chamber for drying wood mod. KBC-4 BobruiskAgroMash prv 1999.в. The volume of loading 3,8 cubic meters.м. Max. the temperature of 85 degrees.

Vacuum drying chambers to buy in Russia you can on the site Oboruduy.com. We have the widest selection of offers from sellers from all over Russia. If you want to sell your equipment, technique or tool, just add your free ad

Vacuum drying chambers

Press-vacuum drying chambers provide rapid and high-quality drying of wood, eliminating the appearance of cracks, deformations and other defects. The optimal solution for drying beams, planks, slats, veneers and other wood products, including precious species. The wood is placed in layers between the heating plates made of extruded aluminum profiles. Inside the plates there are channels for the circulation of hot water, equipped with electrical resistances. The water pipes from each plate are connected to a manifold and that, in turn, to a heating circuit. The vacuum pump creates the vacuum inside the chamber and heats the lumber through the plates. Heating plates are in direct contact with the wood ensuring its rapid heating, which reduces the drying time by half compared to other vacuum drying chambers and by many times compared to convection chambers.

KEY ADVANTAGES OF THE PRESS-VACUUM UNITS

  • All parts of the chamber that are in contact with water (chamber housing, pipes, valves, condensers, vacuum pump, etc.).д.) made of stainless steel INOX AISI 304, ensuring many years of corrosion-free operation. chambers produced in the 1980’s are still in use.
  • CNC control system has no analogues! Preset programs for drying all types of wood. Due to the perfectly adjusted control and uniform distribution of pressure and temperature, each of the drying stages achieves record speed and quality indicators.
  • Remote control system (via Internet) of the current drying process, diagnostics of units and assemblies of the chamber, review of the drying history. all accessible from your smartphone or computer from anywhere in the world!
  • The unique cover membrane made of 100% silicone ensures many years of trouble-free operation, while vacuuming, generates a pressure of 9000 kg/m² on the stack and leads to plasticizing the wood, eliminating deformations.
  • Solid extruded aluminum heating plates.

All vacuum drying chambers are equipped with the unique CNC control system, which enables detailed setup and automation of the drying process. 40 programs for the most popular sorts of wood are preinstalled as standard. The system controls the humidity of the lumber, the environment, the internal vacuum as well as the functioning of all the auxiliary systems.

Vacuum dryer operation

Vacuum drying is divided into several phases. First the wood is loaded inside the chamber. In this process, the lumber is placed in layers between the aluminum heating plates. The drying parameters (temperature and pressure) are set by a specialist. This is necessary to work with different types of wood, after which the device can be turned on. The drying pressure is kept constant and the temperature can vary.

Please note! During the heating phase the normal pressure is used and the vacuum pump is switched off. This is necessary to prevent defects.

When the wood has reached the desired temperature, the vacuum pump is turned on. It removes air from the drying chamber, thus creating the right pressure. The moisture in the wood moves from the center to the outer layers. Since the material is moistened in this process, no additional means are required. Uniform moisture distribution saves the wood from spoiling.

Moisture that has come to the surface evaporates because of the high temperature and is deposited on the walls of the housing and pumped out.

The vacuum environment speeds up this process because evaporation already takes place at a temperature of 40 degrees. this would not happen with conventional pressure. The air surrounding the wood is never heated to more than 70 degrees Celsius. The upper rubber cover of the chamber is sucked in during evacuation and presses the boards, creating a kind of a press.

The final step is conditioning. It is not used until the wood has reached the correct humidity. The heating stops, but the vacuum pump stays on. The wood gradually cools down, while remaining under the press, which is necessary to prevent changes in the shape of the material. When the temperature has reached room temperature turn the pump off and take the wood out of the unit.

Vacuum press dryer for wood

(depending on the thickness of the lumber in this case. 35 mm)

Vacuum unit capacity, m³/h

Costs per m³ dried timber max., in this case ash-tree

(flowing water or closed loop system with cooler), m³

Drying chamber

The chamber is a parallelepipedic tank of stainless steel AISI 304. Important part of the chamber is the lid, which is a frame with a special silicone membrane stretched over it.

Thanks to the vacuum produced by the vacuum pump, a rubber sheet is pressed under atmospheric pressure to the bottom of the chamber with a pressure of about 10 000 kg/m² from the boards stacked on top of the heating plates. The practical result of this pressure is a significant reduction in the deformations of the timber (twisting, warping, etc.).) and high drying speed. Boards dry absolutely flat, without damage.

8 years warranty against corrosion caused by organic acids from wood.

Press vacuum drying chamber for timber

All-aluminum frame: supporting structures of profile with 5 mm wall thickness. Product size: 100×120 mm or 100×150 mm. Longitudinal and transverse ties. made of 100×50, 50×50 profile, wall thickness 5 mm. Support trusses. welded from profile 100×50 mm. front truss. reinforced construction of 130x60x5 mm profile for installation of three monorail suspension brackets. Uprights and door leaf made of 130x60x5 mm aluminium profile with stainless steel parts of the door hanger.

Mineral wool or 150 mm thick polystyrene foam is used as heat insulation in the wall panels, which allows the drying chambers to be used at ambient temperatures up to 35°C.55 °С.

Aluminum cassette-type panels installed on the outside of the drying chamber frame. Aluminium thickness 1.0 mm, the cassettes are made on bending equipment. Cassette length 2400 mm, width 900 mm, wall height of 100 to 150 mm (for installation of insulation. mineral wool of appropriate thickness; as standard. 150 mm). The cassettes are mounted in horizontal rows from bottom to top and fixed to the pipe profile of the frame with stainless steel self-tapping screws and aluminum rivets. After the installation of insulation in the cassettes, the walls are covered (outside) with aluminum profile sheet HC-20.

The entire structure withstands snow loads of up to 240 kg/m² and wind speeds of 0.38 mPa

Electric control panel

The control board, which meets the highest and most modern requirements, is fully electrically protected, has redundant control, light indication and maximum reliability. Electrical panel with automatic or manual control of all the functions of the drying process. Built-in lights help the operator to monitor the current status and assist in troubleshooting.

High quality imported components, assembled in Russia.

Ventilation system

Axial fans mounted on aluminum frame above false ceiling.

Electric motor of the fan is designed to work at temperatures above 115°C and humidity of 100%, in a tropical version (heat-resistance class H), degree of protection IP 55 (dustproof, protected against water jets from all sides), the shaft speed of 1500 rpm. Service life is up to 10-15 years.

Manufactured by Lafert (Italy). impellers. Elektrovent (Italy).

Fan impeller made of 8 aluminium blades with a symmetrical profile in order to obtain the same efficiency in both directions of rotation, thanks to the perfect factory balance and calibration of the blade pitch angle for the motor performance, resulting in a maximum efficiency and consequent energy saving. Operating temperature from.800 ° C to 3000 ° C. The shells are made of aluminum.

Suspended ceiling

Consists of profiled aluminum sheets mounted on special rails that ensure easy mounting and give access to the fans during their maintenance.

The lift-and-turn type door

The frame is made of aluminium profiles, mechanically connected by stainless steel screws and equipped with rods for stability and sturdiness. Have nine pressure points. The door is perfectly insulated thanks to the special profile of hard silicone on the whole perimeter of the door. A hydraulic cart is used to lift the gate, which ensures easy lifting and sliding of the gate.

LiTOUCH automatic controller (Italy)

LItouch is a natural evolution of the well-known DELPHI control system, obtained by combining the more advanced dTOUCH controller with DELPHI features. The result is a control system that combines the ease of DELPHI with a user-friendly dTOUCH interface.

The controller is based on advanced technology in electronics, incorporating the results of many years of experience in the manufacture of drying chamber automatics. User-friendly menu allows quick adjustment of the controller even for inexperienced users. All controller pages have a current status bar.

OPTION. With the LView software (available by extra agreement) you can control a set of drying chambers (supports up to 32 chambers). The system is connected to a personal computer by means of a USB converter, also electronic key. Program allows to update the firmware versions in the presence of Internet connection. By means of software, the operator can carry out on a PC all operations available from the local panel. PC software makes it possible to record the data during the drying process in the form of tables or graphics.

Air dampers

Air dampers, regulate the exchange of indoor air flow. Damper section size 450×450 mm. Belimo (Switzerland) actuators control the opening and closing of the air dampers proportionally. Air dampers can be located either on the roof, on the front or the rear wall of the drying chamber.

Heating system

The heating system consists of bimetallic double row heat exchangers: carbon steel pipes. fins made of aluminum. (Optional: stainless steel with aluminum fins)

No corrosion in the heat exchanger, very resistant to defrosting system. Small fin pitch increases the area of heating elements.

Heat exchangers are back mounted, with mating flanges. The duplex arrangement of the duct heater maximizes the heat output without obstructing the airflow above the design criteria. Automatic venting valve also installed. These heat exchangers are designed by our specialists in full accordance with the requirements of operation in drying chambers, are made to order.

Inspection doors

Located in the gate and on the back wall of the drying chamber. Made of aluminium shells with silicon gaskets, insulated as in the walls of the chamber. Equipped with a convenient lock. The presence of two inspection doors allows you to monitor all the sensors and the drying process.

Three-way valve for hot water control

For hot water supply into the drying chamber a three-way valve with an actuator manufactured by Belimo (Switzerland) is used. Diameter (DN) 50 or 65 mm. The cock regulates the hot water supply in proportional mode.

Three-way stopcock for hot water control is included in the basic equipment of each EcoWood model.

Humidification system

Double-sided (or single-sided) humidification system is supplied with two solenoid valves and is located on the rear wall and on the wall above the gate. Thanks to the two humidification branches, the nozzles of the side whose side is reversed are switched on. This eliminates the possibility of dampening droplets knocking on the chamber walls and direct contact with the wood and increases the efficiency of the humidification system several times over. Tubes on which the brass atomizing nozzles are mounted, made of copper.

Technical specifications of PRESS L3 vacuum drying oven

Capacity of lumber (depending on thickness of lumber)

Heat output of an additional boiler

Maximum heat transfer medium temperature

Total electrical power required

Inter-machine mechanization

spare parts from other manufacturers

Total required electrical power

Press-vacuum drying chambers. principle and technology of work

Wood is used in the joinery and furniture industry in the following areas. It is an excellent natural material, which has no alternative, but in order to get a good quality product should be used for the production of the original high quality and most importantly. dry material. Raw, resinous wood is difficult to machine, such as milling, sanding, gluing, etc. If paint coatings are applied to raw, unprepared wood, they will be unstable and unaesthetic. Raw wood is also less durable than dry wood and is prone to warping and cracking. That is why wood must go through a certain preparatory process before treatment. drying.

How the press-vacuum drying works

Different types of wood lumber can be dried effectively with the help of a press-vacuum drying chamber made of stainless steel. Lumber is placed in layers inside the chamber, alternating with aluminum heating plates.

  • The chamber
  • Rubber. diaphragm
  • Frame
  • Rubber. seal
  • Lumber
  • Heating. Plates
  • Hoses
  • Water. pump
  • Heater
  • Thermal insulation
  • Vacuum pump

A water pump circulates the water inside the heating plates. Water is heated in a boiler located outside the chamber. The chamber is hermetically sealed with a lid. Tightness is created by a special silicone membrane, structurally provided and mounted on the lid of the chamber.

After the timber has been loaded, the chamber lid closes tightly and the liquid vacuum pump turns on to suck the air out of the chamber. When a vacuum is created, the silicone membrane presses the stack of lumber laid over with heated plates to the bottom of the chamber with a force of up to 10,000 kg/m2. Thus, the wood is heated and dried in a vacuum under the press.

The practical result of pressure drying is the reduction of deformations such as twisting or warping that often accompany other types of drying. At temperatures above 80°C the plasticization of the wood takes place. After the drying process the boards are absolutely straight and without warping or other distortions.

Depending on the type and thickness of the material, the appropriate drying temperature and cycles are chosen. The heating temperature and vacuum loading are designed so that the evaporated moisture does not create any concentrations or stresses that could cause the wood to crack. When observing the drying program the color of the timber does not change, which is important for valuable species of wood.

The compression of the package of boards and heating plates provides good contact with the heaters and a good heat exchange that increases the speed of drying of lumber to the desired condition (furniture humidity of 6. 8%). Increased drying speed reduces energy consumption, which consequently reduces the cost of production.

For the best quality drying, the material must be chosen as homogeneous as possible in size and humidity, considering the conditions of its storage. The press-vacuum drying chamber has the shortest drying cycle compared to other drying methods. So drying boards from pine with a thickness of 30 mm to a moisture level of 6% occurs in 12 hours. By comparison, traditional drying times for softwoods with gradual heating, blowing and cooling range from 10 to 20 days, depending on the final moisture content required and the intended use of the material.

The press-vacuum drying chamber helps to solve another important problem of fir, pine and other coniferous woods. Such a problem is the prolonged release of resin at temperature changes in already finished products, if they are made of material that has not been treated in the drying chamber under vacuum. Resinous compounds of wood consist of two main components.

Turpentine oil. is a volatile component, which evaporates in a vacuum at a temperature of about 80 ° C. The heavier fraction (rosin and other resins), which remains after turpentine evaporation, crystallizes at room temperature. Crystalline inclusions are no longer prominent on the wood surface and are not an obstacle for further processing of workpieces. Consequently, vacuum dried wood has many advantages that come into play when working with this type of wood.

Custom-made press-vacuum drying chamber, made of stainless steel, has a long service life and good corrosion protection. The use of drying chambers of this type provides significant savings of energy resources, reduces the cost of production at its high quality.

We offer an affordable and quality solution. Redwood press-vacuum drying chamber!

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