RU38911U1 - WOOD DRYING CHAMBER - Google Patents

Abstract

1. A wood drying chamber comprising a fan, a ventilation system, a heat source, ducts, a drying space, doors, characterized in that a heat stove is used as a heat source, equipped with air return ducts with shutters located in a partition between the drying chamber and an oven-heater, the ventilation system consists of hatches with dampers in the enclosure of the heater-heater and ventilation wells with dampers in the drying chamber, air ducts are located on the floor of the chamber at the level of the rails along the length of the chamber, slit-like gaps are made along the length of the ducts, the loading and unloading doors of sawn timber are located in the side wall of the chamber parallel to the rails, the feeding and unloading mechanism of trolleys and sawn timber is made, consisting of monorails fixed to the upper part of the chamber and made to be connected to the monorail beam cranes with locking system. 2. A wood drying chamber according to claim 1, characterized in that the ducts are made of metal. A wood drying chamber according to claim 1, characterized in that the air ducts are made of wood. A wood drying chamber according to claim 1, characterized in that the ducts are made of plastic. A wood drying chamber according to claim 1, characterized in that the slit-like gaps of the ducts are made with the possibility of overlapping them. A wood drying chamber according to claim 1, characterized in that the ducts additionally carry out connectors in cross section with the possibility of overlapping them. Wood drying chamber according to claim 1, characterized in that the ventilation wells with shutters are made in the ceiling of the chamber

Description

The utility model relates to the field of drying lumber and can be used in continuous forest kilns.

Known drying chambers of continuous operation with the transverse transportation of stacks of lumber - chamber NB, TsNIIMOD-49, TsNIIMOD-56 (Rasev AI Drying of wood. M .: Higher. Shk., 1985, p.3-75), containing a tunnel for placing stacks of lumber-drying space, a device for moving stacks (rails, roller conveyors), air heater, fan.

The disadvantage of these drying chambers is the uneven distribution of air along the length and height of the drying chamber and, as a result, the uneven drying of the boards along the length, their warping, the inability to regulate the drying process along the length of the tunnel. Known drying methods require a large consumption of electricity.

There are known drying chambers for drying wood and lumber developed by the Uraldrev-INTO Scientific and Production Implementation Company (RU, 20787, U1, 11.27.2001; RU, 23192, U1, 05.27.2002; RU, 31841, U1, 27.08. 2003), each of which contains a casing, a drying space, a fan, a heat source, and differing from each other either by the presence of cutoffs of the drying agent, or by the location of the fans, or by the procedure for combining the drying chambers into blocks.

Known dehumidification chambers are batch dryers. Their disadvantages include high energy consumption both for obtaining a drying agent, and for blowing air in the chamber.

The closest to the patented solution in terms of essential features should include a wood drying chamber used for batch or continuous drying (RU 2189550, C2 09/20/2002), comprising a housing, a fan, a heat source, supply and exhaust air exchange channels, combined into one and having a common inner wall and damper.

The disadvantage of this device is the uneven distribution of the drying agent along the length and height of the chamber and, as a result, the uneven drying of the sawn timber, violation of its geometry, crack formation, high energy consumption.

The problem that is solved when implementing the claimed utility model is to improve the quality of drying of lumber, saving energy.

The problem is solved in that, in the chamber for drying wood, containing, a fan, a ventilation system, a heat source, ducts, a drying space, doors, a heat stove is used as a heat source, equipped with air return ducts with shutters located in the partition between the drying chamber and the calorifer furnace, the ventilation system consists of hatches with dampers in the fence of the calorifer furnace and ventilation wells with dampers in the chamber, air ducts are located on the floor of the chamber at the level of the relay owls along the entire length of the chamber, along the length of the ducts, slit-like gaps are made, the loading and unloading doors of sawn timber are located in the side wall of the chamber parallel to the rails, the feeding and unloading mechanism of trolleys and sawn timber is made, consisting of monorails fixed to the upper part of the chamber and made to connect with a monorail of a crane beam locking system.

Moreover, the ducts can be made of metal. Ducts can be made of wood. Ducts can be made of plastic. Slit-like gaps along the length of the ducts can be made with the possibility of their overlap. In the ducts additionally perform connectors in cross section with the possibility of their overlap. Ventilation wells with shutters can be made in the ceiling of the chamber.

The technical result achieved by the utility model consists in uniformly distributing the drying agent along the length and width of the lumber stack, reducing the energy consumption for heating the drying agent and distributing it over the lumber stack.

Distinctive features from the prototype, allowing to conclude that the claimed solution meets the requirement of novelty, are the following:

- use as a heat source of the furnace-heater, equipped with air ducts of a reverse air flow with dampers located in the partition between the drying chamber and the furnace-heater;

the implementation of the ventilation system, consisting of hatches with dampers in the enclosure of the heater-heater and ventilation wells with dampers in the chamber;

execution along the length of the ducts slit-like gaps;

- the location of the doors in the side wall of the chamber parallel to the location of the rails;

- the implementation of the mechanism for feeding and unloading bogies and lumber, from the monorails fixed in the upper part of the chamber, made with the possibility of connection with the monorail of the crane-beam locking system.

- the implementation of metal ducts.

- execution of air ducts with wood;

- the implementation of plastic ducts;

- the implementation in the ducts of the connectors in cross section with the possibility of overlapping;

- the implementation of ventilation wells with dampers in the ceiling of the chamber.

Devices with the claimed distinguishing features in the patent and scientific literature are not found.

The device is illustrated by drawings, where in Fig.1 shows a General view of the camera in plan, in Fig.2 - a General view of the furnace-heater.

The wood drying chamber contains a drying space 1, doors 2, a fan 3, an air heater 4 with air return ducts with dampers 5, hatches with dampers 6 in the enclosure of the air heater and ventilation wells with dampers 7 in the chamber, air ducts 8 with longitudinal slit-like gaps 9, and connectors 10 in the cross section of the ducts 8, the monorails 11 of the drying chamber, the monorail 12 of the crane beam 13, the rails 14.

The device operates as follows. Carts and lumber are fed into the drying space 1 of the chamber for drying wood using a gantry-type beam crane 13, a monorail 12, which is connected by a locking system to the monorail 11 of the drying chamber, and mounted on rails 14.

As the lumber moves along the chamber, subsequent carts are attached. Heated from the furnace-calorifier 4 with fan 3, the air enters the ducts 8, then through the longitudinal slit-like gaps 9 under the stack of lumber. Cooling, the air passes along the walls of the chamber and through the air ducts of the reverse air flow 5 enters the space of the heater furnace, where when heated, it again enters the drying chamber. To remove moist air, open the shutter hatches 6 in the enclosure of the heater heater and the shutter of the ventilation wells 7, close the shutter of the return air ducts 5.

In order to save the drying agent during the initial start-up of the drying chamber, the longitudinal slit-like gaps 9 of the ducts 8 at the end of the chamber are closed, then they are opened as the lumber stack moves. As the dried wood is unloaded, the connectors 10 are closed in the cross section of the air ducts 8 behind the lumber stack. Dried wood is discharged at the opposite end of the drying chamber.

The proposed device, due to the possibility of air distribution under the stack of lumber and its convection, allows to achieve uniform bilateral removal of moisture from the lumber and ensure their uniform drying, avoiding warping and cracking of wood.

The use of a calorifer furnace working on wood processing waste as a heat source makes it possible to reduce the energy consumption for wood drying by at least two times and improve production safety compared to steam-operated dryers.

The location of the doors for loading and unloading lumber in the side wall of the chamber, parallel to the location of the rails, eliminates drafts and sudden changes in air temperature when loading another batch of lumber.

The implementation of the mechanism for feeding and unloading carts and lumber with the possibility of locking monorails fixed in the upper part of the chamber with a monorail of a crane beam allows you to freely and without additional equipment to feed lumber and carts from the processing and packaging department into the drying chamber and, thus, ensure a high degree mechanization of the process of loading and unloading.

Claims (7)

1. A wood drying chamber comprising a fan, a ventilation system, a heat source, ducts, a drying space, doors, characterized in that a heat stove is used as a heat source, equipped with air return ducts with shutters located in a partition between the drying chamber and an oven-heater, the ventilation system consists of hatches with dampers in the enclosure of the heater-heater and ventilation wells with dampers in the drying chamber, air ducts are located on the floor of the chamber at the level of the rails along the length of the chamber, slit-like gaps are made along the length of the ducts, the loading and unloading doors of sawn timber are located in the side wall of the chamber parallel to the rails, the feeding and unloading mechanism of trolleys and sawn timber is made, consisting of monorails fixed to the upper part of the chamber and made with the possibility of connecting to the monorail beam cranes locking system. 2. A chamber for drying wood according to claim 1, characterized in that the ducts are made of metal. 3. A chamber for drying wood according to claim 1, characterized in that the ducts are made of wood. 4. The chamber for drying wood according to claim 1, characterized in that the ducts are made of plastic. 5. The chamber for drying wood according to claim 1, characterized in that the slit-like gaps of the ducts are made with the possibility of overlapping. 6. The chamber for drying wood according to claim 1, characterized in that in the ducts additionally carry out connectors in cross section with the possibility of overlapping. 7. The chamber for drying wood according to claim 1, characterized in that the ventilation wells with shutters are made in the ceiling of the chamber.