CN212205514U

CN212205514U - Continuous veneer dryer

Info

Publication number: CN212205514U
Application number: CN202020613355.9U
Authority: CN
Inventors: 杨逸
Original assignee: Nanjing Senke Wood Drying Equipment Co ltd
Current assignee: Nanjing Senke Wood Drying Equipment Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-12-22
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a continuous type veneer dryer, including dry tunnel, stoving hydrofuge mechanism and electric heater, be equipped with the cylinder device that can continuous transmission veneer in the dry tunnel, electric heater sets up the below of cylinder device, the top in dry tunnel is equipped with exhaust duct, the lateral wall lower extreme in dry tunnel is equipped with the intake stack, exhaust duct with be equipped with the heat exchanger that is used for the heat transfer between the intake stack. The heat exchanger can recover heat energy from the discharged air, can reduce the heating time of the electric heater, and is energy-saving and environment-friendly; the roller device comprises an upper roller and a lower roller, and the veneer is placed between the upper roller and the lower roller for transmission, so that the problems of nonuniform drying shrinkage, cracks or cracks, warping, shrinkage, node falling and the like generated on the end surface, the surface and the inside of the veneer in the drying process are reduced.

Description

Continuous veneer dryer

Technical Field

The utility model relates to a veneer drying field, specificly a continuous type veneer dryer.

Background

Drying is one of the most widely used important processes in various departments of industrial systems, and is also a process with large energy consumption. In some industrially developed countries, the energy consumed for drying accounts for about 13% -20% of the total energy consumption of the country, and in China, the energy consumed for drying accounts for about 10% of the total energy consumption. Therefore, energy saving of the drying process is a very interesting issue.

Traditional wood drying generally adopts brick-concrete structure drying kiln or aluminum alloy assembly kiln, sets up circulating fan and wind channel in the kiln, sets up hot water heat exchanger in the wind channel and realizes the heating, and the heat source adopts the boiler to burn wood waste or burns coal production mostly. The patent (CN 104019643B) discloses an agricultural product heat pump drying system with waste heat recovery, which realizes the accurate control of the temperature and humidity of air sent into a drying chamber and the moisture discharge capacity of the drying chamber by arranging a fresh air valve and a return air valve at a fresh air inlet and a return air inlet, and the return air valve can effectively control the return air volume in different drying stages. The scheme can accurately control the quality of air fed into the drying chamber, but cannot effectively utilize the heat energy in the air, save heating energy, and also cannot solve the problems of cracks or cracks, warping, shrinkage, node falling and the like generated on the end face, the surface and the inside of the wood in the drying process.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a continuous type veneer dryer, including dry tunnel, stoving hydrofuge mechanism and electric heater, but be equipped with the cylinder device of continuous transmission veneer in the dry tunnel, electric heater sets up the below of cylinder device, the top in dry tunnel is equipped with exhaust duct, the lateral wall lower extreme in dry tunnel is equipped with the air-supply line, the exhaust duct with be equipped with the heat exchanger that is used for the heat transfer between the air-supply line.

Further, stoving hydrofuge mechanism includes frequency conversion circulating fan and hydrofuge fan, the hydrofuge fan fixed mounting be in the exhaust duct.

Further, the heat exchanger is a total heat exchanger.

Further, a drying partition plate is arranged between the roller device and the electric heater.

Further, the frequency conversion circulating fan is arranged at the pipe orifice of the air inlet pipeline and fixedly installed between the drying partition plate and the bottom wall of the drying tunnel.

Further, the roller devices are at least provided with one group and are transversely arranged in the drying tunnel.

Further, the roller device comprises an upper roller and a lower roller, and the upper roller and the lower roller are provided with a plurality of rollers which are uniformly arranged at intervals.

Further, the exhaust duct includes a plurality of branch pipes arranged in a tunnel direction, and a main pipe connecting the branch pipes.

The utility model has the advantages that the drying tunnel is internally provided with the roller device capable of continuously transmitting the single plate, the roller device comprises an upper roller and a lower roller, the single plate is placed between the upper roller and the lower roller for transmission, and the problems that the single plate is not uniformly dried and shrunk in the drying process, and cracks or cracks, warping, shrinking, joints falling and the like are generated on the end surface, the surface and the inside of the single plate are reduced; the heat exchanger is arranged at the intersection of the pipe orifices of the air inlet pipeline and the air outlet pipeline, so that heat energy can be recovered from the discharged air, the heating time of the electric heater can be reduced, and the electric heater is energy-saving and environment-friendly.

Drawings

Fig. 1 is a sectional view of the present invention.

Fig. 2 is a schematic view of a veneer placed between upper and lower rollers for transfer.

The drying device comprises a drying tunnel 1, a drying tunnel 2, an electric heater 3, a heat exchanger 4, a variable-frequency circulating fan 5, a dehumidifying fan 6, a drying partition board 7, an exhaust pipeline 8, an air inlet pipeline 9, an upper roller 10, a lower roller 11, branch pipes 12 and a main pipe.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples.

As shown in fig. 1-2, a continuous veneer dryer comprises a drying tunnel 1, a drying and dehumidifying mechanism and an electric heater 2, wherein a roller device capable of continuously conveying veneers is arranged in the drying tunnel 1, the electric heater 2 is arranged below the roller device, an exhaust duct 7 is arranged at the top of the drying tunnel 1, an air inlet duct 8 is arranged at the lower end of the side wall of the drying tunnel 1, and a heat exchanger 3 for heat exchange is arranged between the exhaust duct 7 and the air inlet duct 8.

Preferably, a drying partition plate 6 is arranged between the drum device and the electric heater 2, and the drying partition plate 6 is fixed on the inner wall of the drying tunnel 1.

Specifically, stoving hydrofuge mechanism includes frequency conversion circulating fan 4 and hydrofuge fan 5, hydrofuge fan 5 fixed mounting in exhaust pipe 7.

Specifically, the variable frequency circulating fan 4 is arranged at the opening of the air inlet pipeline 8 and is fixedly installed between the drying partition plate 6 and the bottom wall of the drying tunnel 1.

It should be noted that the heat exchanger 3 is disposed between the air intake duct 8 and the air exhaust duct 7. The wet and hot air in the drying tunnel 1 is discharged through the exhaust pipeline 7 by the dehumidifying fan 5, the heat exchanger 3 recovers and utilizes the heat energy in the wet and hot air discharged out, the air subjected to heat exchange is conveyed to the drying tunnel 1 through the air inlet pipeline 8 by the frequency conversion circulating fan 4, the air in the drying tunnel 1 is heated by the electric heater 2, and the frequency conversion circulating fan 4 and the dehumidifying fan 5 are operated in cooperation to drive the air circulation in the drying tunnel 1 to dry the veneer.

Preferably, the heat exchanger 3 is a total heat exchanger.

The roller devices are at least provided with one group and are transversely arranged in the drying tunnel 1. Specifically, the roller device comprises an upper roller 9 and a lower roller 10, and the upper roller 9 and the lower roller 10 are provided with a plurality of rollers which are uniformly arranged at intervals. The veneer is placed between the upper roller and the lower roller for transmission, so that the problems of uneven drying shrinkage, cracks or cracks, warping, shrinkage, node falling and the like generated on the end surface, the surface and the inside of the veneer in the drying process are solved.

It should be noted that, the veneer is transferred from one side of the drum device to the other side for primary drying, and an operator can select whether to perform secondary drying or multiple drying according to the moisture degree of the veneer.

It should be noted that the exhaust duct 7 includes a plurality of branch pipes 11 arranged in the tunnel direction, and a main pipe 12 connecting the branch pipes 11, and the dehumidifying fan is disposed in the main pipe 12.

It should be noted that, in order to prevent heat in the drying tunnel 1 from being transferred outward, heat loss in the drying tunnel 1 is small, and a good heat preservation effect is achieved, and the heat preservation material on the outer wall of the drying tunnel 1 is preferably a heat preservation material with good heat insulation performance, such as a polyurethane heat preservation board, a rock wool board, and the like.

The utility model has the advantages that: 1. the drying tunnel is internally provided with a roller device capable of continuously transmitting the single plate, the roller device comprises an upper roller and a lower roller, the single plate is placed between the upper roller and the lower roller for transmission, and the problems of uneven drying shrinkage, cracks or cracks, warping, shrinkage, node falling and the like generated on the end surface, the surface and the inside of the single plate in the drying process are reduced; 2. the heat exchanger is arranged at the intersection of the pipe orifices of the air inlet pipeline and the air outlet pipeline, so that heat energy can be recovered from the discharged air, the heating time of the electric heater can be reduced, and the electric heater is energy-saving and environment-friendly.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. It should be understood that the above description is only exemplary of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The continuous veneer dryer is characterized by comprising a drying tunnel, a drying and dehumidifying mechanism and an electric heater, wherein a roller device capable of continuously conveying veneers is arranged in the drying tunnel, the electric heater is arranged below the roller device, an exhaust pipeline is arranged at the top of the drying tunnel, an air inlet pipeline is arranged at the lower end of the side wall of the drying tunnel, and a heat exchanger for heat exchange is arranged between the exhaust pipeline and the air inlet pipeline.

2. The continuous veneer dryer according to claim 1, wherein said drying and dehumidifying mechanism comprises a variable frequency circulating fan and a dehumidifying fan, and said dehumidifying fan is fixedly installed in said exhaust duct.

3. The continuous veneer dryer according to claim 1, wherein said heat exchanger is a total heat exchanger.

4. The continuous veneer dryer according to claim 2, wherein a drying partition is provided between said drum means and said electric heater.

5. The continuous veneer dryer according to claim 4, wherein said variable frequency circulating fan is disposed at the mouth of an air inlet duct and is fixedly installed between said drying partition plate and the bottom wall of said drying tunnel.

6. A continuous veneer dryer according to claim 1, wherein said drum means is provided in at least one group, laterally disposed within said drying tunnel.

7. The continuous veneer dryer according to claim 1, wherein said drum means comprises a plurality of upper drums and a plurality of lower drums, which are arranged at regular intervals.

8. The continuous veneer dryer according to claim 1, wherein said exhaust duct comprises a plurality of branch pipes arranged in a tunnel direction, and a main pipe connecting the branch pipes.