CN106152772A - A single box track type wood veneer drying device - Google Patents

Abstract

The invention relates to the technical field of artificial board processing and manufacturing, in particular to a single-box rail type wood veneer drying device which comprises a closable oven, a wood veneer drying rack and a boiler burner, wherein the side surfaces of two ends of the closable oven are respectively provided with an inlet and an outlet, and the inlet and the outlet are both provided with a closable door; a drying track capable of guiding and conveying a wood veneer drying rack is arranged at the inner bottom of the airtight oven, a plurality of wood veneers can be placed on the wood veneer drying rack, and the wood veneer drying rack can enter from an inlet and be sent out from an outlet; the inlet end of the airtight oven is provided with an induced draft fan which can discharge air in the oven out of the oven, the outlet end of the airtight oven is provided with a heat exchanger, the heat exchanger is connected with a heat carrier pipe of the boiler burner, and hot air discharged from a hot air outlet of the boiler burner firstly contacts with the heat exchanger and then enters the oven. The drying device has the advantages of simple structure, low manufacturing cost, low energy consumption for drying the veneer and the like.

Description

A single box track type wood veneer drying device

technical field

The invention relates to the technical field of wood-based panel processing and manufacturing, in particular to a single-box rail-type wood veneer drying device.

Background technique

The veneer of wood is the raw material for the production of plywood, blockboard, veneer and other wood-based panels. Most of the veneers are made by rotary cutting of logs. Because the veneers produced by rotary cutting contain a lot of water, they need to be dried before they can be used to produce wood-based panels; the traditional drying method is to dry each veneer in the sun or roll or mesh belt. The board dryer is carried out by water evaporation, but this drying method needs to occupy a large amount of space, the production efficiency is low, and the veneer is easy to deform, and it is also restricted by the weather. The other two have a large veneer shrinkage rate and high cost. insufficient.

In order to overcome the shortcomings of traditional drying of wood veneers and allow wood veneers to dry without being restricted by the weather, people have invented a wood veneer drying device. The open literature also reports some wood veneer drying devices, such as:

1. Chinese patent: wood veneer drying device, application number: 201510521486.8, application date: 2015.08.24, applicant: Chongqing Zuoen Furniture Co., Ltd., address: 401233 Xinshi Centralized Industrial Park, Changshou District, Chongqing, inventor: Yang Lihong , Abstract: The invention discloses a wood veneer drying device, which includes a drying room, a drying mechanism and a board transportation mechanism. The drying mechanism includes a hot air box, an air inlet pipe and a hot air blower. Between the feed port and the discharge port of the drying room, the middle part of the hot air box group forms a transport channel for the wood veneer to pass through, and a breathable soft pressing block is fixed at the end of the hot air box, and the air jet pipe is inserted into the In the soft briquetting block, all the hot air boxes are connected to the hot air blower through the air inlet pipe. The plate transport mechanism includes a conveyor belt and a feed roller, and the feed roller is erected outside the feed port of the drying room; the conveyor belt is arranged up and down to form a conveyor belt. Group, the conveyor belt group is set between the two hot air box groups, the advantage of this scheme is that it is used in the drying of wood veneer, and it can ensure that it will not bend after drying.

2. Chinese patent: a veneer dryer, application number: 201310665088.4, application date: 2013.12.09, applicant: Jiangsu Happy Wood Industry Group Co., Ltd., address: 225248 Gaoxuji Town, Xiaoji Town, Jiangdu District, Yangzhou City, Jiangsu Province , Inventors: Liu Xiaobing, Shao Xuefen, Wang Daojiang, Huang Baoping, Lu Jiali, Liu Nianxiang, Abstract: This invention discloses a veneer dryer, which includes a plurality of heating plate groups and a plurality of driving drum groups arranged continuously and alternately in a plane ; Each heating plate group includes an upper heating plate and a lower heating plate, and the distance between the upper heating plate and the lower heating plate is greater than the thickness of the single plate; each driving roller group includes up and down oppositely arranged and oppositely turned, for clamping And convey the upper roller and the lower roller of the veneer, and the distance between the centers of two adjacent drive roller groups is smaller than the side length of the veneer parallel to the conveying direction. In the veneer dryer provided by this invention, the upper heating plate and the lower heating plate are used to dry the veneer from the upper and lower sides respectively. Since the upper heating plate and the lower heating plate are fixed, there will be no air flow, which improves the efficiency of the heat. Utilization rate, high drying efficiency, and the veneer is squeezed by the upper roller and the lower roller, which improves the flatness of the veneer. Since the heating plate group and the drive roller group are arranged in a plane, the veneer will not bend and reduce The proportion of broken veneers.

3. Chinese patent: solid wood veneer drying rack, application number: 201310518122.5, application date: 2013.10.29, applicant: Qi Hongmei, address: 223343 Zhaoji Street, Zhaoji Town, Huaiyin District, Huai'an City, Jiangsu Province, inventor: Qi Hongmei, Abstract: The invention discloses a solid wood veneer drying frame, which includes a frame body, and the frame body is horizontally provided with a rectangular frame whose width is not less than the width of the veneer; inside the frame are equidistantly arranged several parallel bars along the horizontal direction. rib. The distance between the ribs is 10-15cm. The surface of the rib is covered with a soft material layer. The invention has a simple structure and solves the problem of the area occupied by drying and drying veneers. Put the veneers vertically between the ribs of the drying rack, and rely on the ribs to provide support. The distance between the ribs ensures the ventilation between the veneers. More veneers can be dried in a limited area, which improves production efficiency.

4. Chinese patent: veneer drying equipment, application number: 201310275598.0, application date: 2013.07.03, applicant: Yuan An, address: 545209 Liucheng Sitang Farm, Liuzhou City, Guangxi Zhuang Autonomous Region, inventors: Yuan An, Wang Daoxian, Abstract: The invention discloses a veneer drying equipment, which includes a box body with a material inlet and a material outlet, and an air heat exchanger. There is a discharge device, and a conveying device is arranged between the two; the conveying device includes a driving sprocket set and a driven sprocket set on the box body and an endless chain surrounding the two, and the endless chain is provided with intervals Multiple clamping rods; the partition between the uplink and downlink of the endless chain encloses the upper space in the box into a baking channel, the upper part of the baking channel is provided with a first cooling channel, and the bottom of the partition is provided with a second Two heat dissipation channels, the bottom plate of the first heat dissipation channel and the top plate of the second heat dissipation channel are distributed with a plurality of heat dissipation holes connected to the baking channel; the first heat dissipation channel and the second heat dissipation channel are respectively communicated with the air outlet of the air heat exchanger through the air pipe . Compared with the prior art, the invention can solve the problems of easy cracking, high energy consumption and low efficiency of the existing veneer during baking.

5. Chinese patent: vertical wood veneer dryer, application number: 201420816912.1, application date: 2014.12.22, patentee: Chen Yongjie, address: 545621 Bangcuntun, Liuhe Village, Jiangkou Township, Luzhai County, Liuzhou City, Guangxi Zhuang Autonomous Region, invented Person: Chen Yongjie, Abstract: A vertical wood veneer dryer, the conveying device includes a conveyor belt, the two sides of the conveyor belt are connected with side baffles extending upward at intervals, and a chain is formed by the side baffles on both sides and the top of the conveyor belt The wood veneer is restricted in the chain groove of vertical conveying; the heating assembly is installed on both sides of the wood veneer respectively, and the heating assembly is connected with the heat source, and there is an air supply hole on the side facing the wood veneer, which will The hot air generated by the heating assembly is blown to the side of the wood veneer to dry the wood veneer. Its advantage is that it is easy to put the wood veneer into the tank, no matter it is rainy weather or sunny weather, it can start production normally, the staff will not be exposed to the sun and rain, and the two sides of the wood veneer are evenly heated at the same time, thus speeding up production. The water in the wood veneer boils and evaporates, and the temperature of the wood veneer after being cooled by the cooling group before it comes out is not much different from the temperature of the air, which greatly improves the existing problem of high humidity after natural cooling.

6. Chinese patent: Wooden board drying roller kiln system and its special device, application number: 201210380033.4, application date: 2012.10.09, applicant: Su Xiongmeng, address: 537100 Guangxi Zhuang Autonomous Region Guigang City Square Mingzhu No. 2 409, invented Person: Su Xiongmeng, Abstract: This invention discloses a wood board drying roller kiln system and its special device. The system includes: hot blast furnace, kiln body, automatic adjustment control cabinet device, dust collector, hot air conveying pipeline, heat recovery pipeline , heat supply pipe, dehumidification pipe, dryer and blower; hot blast stove, hot blast stove includes: combustion chamber, hot air storage chamber, hot blast recovery port, cinder outlet, hot blast outlet, upper flue gas outlet and lower hot blast outlet; kiln body , The kiln body includes: dryer, heat recovery pipe, heat supply pipe and dehumidification pipe; the dryer frame of the dryer divides the kiln body into three parts: the upper, middle and lower parts, the middle part is the transmission part, and the upper and lower parts are the supply The hot part; the invention adopts an automatic control temperature adjustment device; the speed can be adjusted according to the required daily output. Driven by the upper and lower rollers, the operation is stable, the noise is low, safe and reliable, the operation is easy, and the plates in the kiln are neat, smooth and free of deformation. Equipped with reasonable air-introducing inner tubes, the hot air can directly contact the wood boards, which improves the drying efficiency, saves energy and reduces production costs.

After research, it was found that the existing wood veneer drying devices all use chains or rollers to input the veneer into the drying box, with many transmission parts, complex structure and high manufacturing cost; High energy consumption. How to reduce the manufacturing cost of the drying device, and reduce the input and cost of veneer drying has become an urgent problem to be solved by those skilled in the art.

Contents of the invention

The purpose of the present invention is to provide a single-box rail-type wood veneer drying device with simple structure, low manufacturing cost, high drying efficiency and low energy consumption for drying veneers.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A single-box rail-type wood veneer drying device, comprising a sealable oven, a wood veneer drying frame and a boiler burner, the sides of the two ends of the sealable oven are respectively provided with an inlet and an outlet, and both the inlet and the outlet are provided There is a door that can be closed; the inner bottom of the airtight oven is provided with a drying track that can guide the wood veneer drying rack, and multiple pieces of wood veneer can be placed on the wood veneer drying rack. It can enter from the inlet and send out from the outlet; the inlet end of the airtight oven is equipped with an induced draft fan that can discharge the air in the oven out of the oven, and the outlet end of the airtight oven is equipped with a heat exchanger, and the heat exchanger and the boiler burn The heat carrier is connected to the heat carrier tube of the boiler. The heat carrier is heat transfer oil, water or other heat carriers. Through heat exchange, the exchanged heat, together with the hot air discharged from the hot air outlet of the boiler burner, enters the oven to dry the wood veneer on the wood veneer drying rack, and the heat carrier continues to return to the boiler burner It is heated in the compartment, and the hot air discharged from the hot air outlet of the boiler burner first contacts the heat exchanger and then enters the oven. The temperature of the hot air at the outlet end of the oven is maintained at 70°C-120°C.

There is a soot settling chamber between the hot air outlet and the heat exchanger. The hot air discharged from the hot air outlet first settles in the soot settling chamber, then contacts the heat exchanger, and finally enters the oven.

The wood veneer drying rack includes a bracket and a limit net base, a plurality of limit net bases are stacked and hinged on the bracket, and the upper and lower sides of the limit net base are equipped with limit nets, and the bottom of the limit net base is installed with Spacer, the spacer separates the upper and lower limit net seats, the wood veneer is placed between the upper and lower limit net seats, and pulleys are installed at the bottom of the bracket.

The ground of the inlet and the outlet is respectively provided with an input track and an output track, one end of the input track and the output track is respectively connected with the drying track, and the other end of the input track and the output track is connected with a pre-stack track, and the input track and the output track are respectively placed There are input slide rails and output slide rails. The wood veneer drying rack first places undried wood veneers on the pre-stacking track, and then pushes the wood veneer drying rack horizontally to the input slide on the input track. On the rail, push the wood veneer drying rack vertically, the wood veneer drying rack and the input slide rail slide together on the input guide rail, enter the oven from the entrance, and finally push the wood veneer drying rack horizontally, the wood veneer drying rack is pushed onto the drying rails.

In order to realize the automatic conveyance of the wood veneer drying rack to dry the wood veneer, a device that can automatically push the wood veneer drying rack can be set, and the time for the wood veneer drying rack to enter and exit the oven can be set by the controller.

The wall of the airtight oven is provided with an insulating layer to reduce heat loss in the oven.

The inner side of the wall of the airtight oven is provided with an aluminum film reflective layer, which reflects the heat in the oven to the wood veneer drying rack to dry the wood veneer and improve the heat utilization rate.

The beneficial effects of the present invention are:

1. The single-box track-type wood veneer drying device of the present invention has a simple structure, and is composed of an oven, guide rails, wood veneer drying racks, induced draft fans, heat exchangers and boiler burners. The manufacturing cost is low and there are few transmission parts. Low maintenance rate, only one induced draft fan, reducing power consumption and energy consumption for wood veneer drying; the hot air discharged from the hot air outlet of the boiler burner first contacts the heat exchanger, and then enters the hot air in the oven so that the hot air directly contacts the wood veneer , which greatly improves the drying efficiency, saves energy and reduces production costs; it is not affected by the weather and can be produced all day long.

2. The wood veneer drying rack adopted in the present invention includes a bracket and a limit net seat, a plurality of limit net seats are stacked and hinged on the support, and pulleys are installed at the bottom of the support; the upper and lower sides of the limit net seat are all equipped with limit Net, the lower part of the limit net seat is installed with a cushion block, which separates the upper and lower two limit net seats, and the wood veneer is placed between the upper and lower limit net seats, and the limit net only limits the wood veneer , the wood veneer will not be squeezed, and the hot air passes between the limit net and the limit net to heat the wood veneer, so that the wood veneer will not be bent and deformed.

3. The manufacturing cost of the single-box rail-type wood veneer drying device of the present invention is more than 200,000 yuan lower than that of the currently reported drum-type drying equipment, and more than 25 yuan can be saved for drying every cubic wood veneer.

Description of drawings

Fig. 1 is the structural representation of single box track type wood veneer drying device of the present invention;

Fig. 2 is a sectional view of the oven in Fig. 1;

Fig. 3 is a sectional view of the soot settling chamber in Fig. 1;

Fig. 4 is the structural representation of the wood veneer drying rack in Fig. 1;

Fig. 5 is a structural schematic diagram of the limiting net of the wood veneer in Fig. 4;

Figure 6 is a top view of Figure 5;

The serial numbers and names of the components in the figure are:

1. Outlet pipe, 2. Induced fan, 3. Intake pipe, 4. Oven, 5. Drying track, 6. Outlet, 7. Output slide rail, 8. Heat exchanger, 9. Smoke settling chamber, 10. Heat Carrier pipe, 11, boiler burner, 12, hot air outlet, 13, output track, 14, wood veneer drying rack, 15, pre-stack track, 16, input slide rail, 17, input track, 18, inlet, 19 , support, 20, limit net seat, 21, limit net, 22, pad, 23, pulley.

detailed description

The technical solutions in the present invention are clearly and completely described below in conjunction with the embodiments, and the described embodiments are only a part of the present invention, not all embodiments.

Example 1:

The single-box track-type wood veneer drying device includes a sealable oven 4, a wood veneer drying rack 14 and a boiler burner 11. The sides of the two ends of the sealable oven 4 are respectively provided with an inlet 18 and an outlet 6, and the inlet 18 and outlet 6 are all provided with the door that can seal; Wood veneer, wood veneer drying rack 14 enters from inlet 18 by input track 17, sends out from outlet 6 by output track 13; The position net seat 20 is stacked and hinged on the support 19, and the upper and lower sides of the space limit net seat 20 are all equipped with a spacer net 21, and the bottom of the space limit net seat 20 is equipped with a spacer 22, and the spacer 22 will move the two space limit net seats 20 up and down. Separated, the wood veneer is placed between the upper and lower two limit net seats 20, and a pulley 23 is installed at the bottom of the support 19. The inlet end of the airtight oven 4 is equipped with an induced draft fan 2 that can discharge the air in the oven 4 out of the oven, and the outlet end of the airtight oven 4 is equipped with a heat exchanger 8, and the heat exchanger 8 is connected to the boiler burner 11. The heat carrier tube 10 is connected, and the hot air discharged from the hot air outlet 12 of the boiler burner 11 first contacts the heat exchanger 8 and then enters the oven 4 . A soot settling chamber 9 is arranged between the hot air outlet 12 and the heat exchanger 8. The hot air discharged from the hot air outlet 12 first settles in the soot settling chamber 9, then contacts the heat exchanger 8, and finally enters the oven 4. The ground of the inlet 18 and the outlet 6 is respectively provided with an input track 17 and an output track 13, and one end of the input track 17 and the output track 13 is respectively connected with the drying track 5, and the other end of the input track 17 and the output track 13 is connected with a pre-stacking track 15. The input slide rail 16 and the output slide rail 7 are placed on the input track 17 and the output track 13 respectively. The wall of the airtight oven is provided with an insulation layer to reduce heat loss.

Example 2

The single-box track-type wood veneer drying device includes a sealable oven 4, a wood veneer drying rack 14 and a boiler burner 11. The sides of the two ends of the sealable oven 4 are respectively provided with an inlet 18 and an outlet 6, and the inlet 18 and outlet 6 are all provided with the door that can seal; The wood veneer, the wood veneer drying rack 14 enters from the inlet 18 through the input track 17, and the output track 13 is sent out from the outlet 6; the wood veneer drying rack 14 includes a bracket 19 and a limit net seat 20, and multiple limit Net seat 20 is stacked and hinged on the support 19, and the upper and lower sides of the limit net seat 20 are all equipped with a limit net 21, and the bottom of the limit net seat 20 is equipped with a spacer 22, and the spacer 22 separates the upper and lower two space limit net seats 20. Open, the wood veneer is placed between the upper and lower two limit net seats 20, and a pulley 23 is installed at the bottom of the support 19. The inlet end of the airtight oven 4 is equipped with an induced draft fan 2 that can discharge the air in the oven 4 out of the oven, and the outlet end of the airtight oven 4 is equipped with a heat exchanger 8, and the heat exchanger 8 is connected to the boiler burner 11. The heat carrier tube 10 is connected, and the hot air discharged from the hot air outlet 12 of the boiler burner 11 first contacts the heat exchanger 8 and then enters the oven 4 . A soot settling chamber 9 is arranged between the hot air outlet 12 and the heat exchanger 8. The hot air discharged from the hot air outlet 12 first settles in the soot settling chamber 9, then contacts the heat exchanger 8, and finally enters the oven 4. The ground of the inlet 18 and the outlet 6 is respectively provided with an input track 17 and an output track 13, and one end of the input track 17 and the output track 13 is respectively connected with the drying track 5, and the other end of the input track 17 and the output track 13 is connected with a pre-stacking track 15. The input slide rail 16 and the output slide rail 7 are placed on the input track 17 and the output track 13 respectively. The wall of the airtight oven is provided with an insulation layer to reduce heat loss. The insulation material of the insulation layer comprises the following components in parts by weight:

The inner side of the box wall of the airtight oven 4 is provided with an aluminum film reflective layer.

The working principle of the single-box track type wood veneer drying device of the present invention is: first place the wet wood veneer on the wood veneer drying rack 13, and place a plurality of wood veneer drying racks with the wood veneer 14 are pushed into the tunnel-type oven 4 one by one until the drying track 5 is full of wood veneer drying racks 14, the doors of the inlet 18 and the outlet 6 are closed, the boiler burner 11 is ignited, and the induced draft fan 2 is turned on. Under the action of the induced draft fan 2, the hot air discharged from the hot air outlet 12 of the boiler burner 11 enters from the outlet end of the oven 4, flows through the inlet pipe 3 at the inlet end, and is discharged from the outlet pipe 1. The wood veneer on the veneer drying rack 13 is dried; after the wood veneer drying on the wood veneer drying rack 13 at the outlet 6 ends reaches the required water content, it is pushed out, and pushed into the The wood veneer drying frame 13 of wet wood veneer can finish the drying work of a plurality of wood veneers in sequence.

Application example

1. A wood company in Hengxian County, Guangxi, used to use artificial sun drying boards. Due to the influence of the weather, the drying board efficiency was extremely low; in order to dry the wood veneers without being restricted by the weather, the company adopted a traditional roller wood veneer. The wood veneer is dried by the board drying device. The drum type wood veneer drying device has complex structure, many transmission parts, high cost, high maintenance efficiency and large energy consumption; in order to overcome the above shortcomings, the company uses the drying device of the present invention , the drying device is simple in structure, low in manufacturing cost, more than 200,000 yuan lower than the drum-type drying device, and the cost of drying a cubic meter of wood veneer in the drying device of the present invention is lower than that of the drum-type drying device in drying a cubic meter of wood. The cost of the veneer is more than 30 yuan lower, which greatly reduces the drying cost of the wood veneer.

Claims (7)

1. a single case rail mounted wood single-plate drying device, it is characterised in that: including can airtight baking oven (4), wood single-plate Stoving rack (14) and boiler combustion machine (11), the side at baking oven (4) two ends that described energy is airtight be respectively arranged with import (18) and Outlet (6), import (18) and outlet (6) are both provided with door that can be airtight；The inner bottom part of baking oven (4) that can be airtight is provided with and can lead Sending the drying track (5) of wood single-plate stoving rack (14), wood single-plate stoving rack can place multi-disc wood single-plate, timber on (14) Veneer stoving rack (14) can enter from import (18), sends from outlet (6)；The entrance point of baking oven (4) that can be airtight is provided with energy Air in baking oven (4) is discharged the air-introduced machine (2) outside baking oven, and the port of export of baking oven (4) that can be airtight is mounted with heat exchanger (8), heat exchanger (8) is connected with the heat carrier pipe (10) of boiler combustion machine (11), the hot-blast outlet (12) of boiler combustion machine (11) After the hot blast discharged first contacts with heat exchanger (8), enter back in baking oven (4).

Single case rail mounted wood single-plate drying device the most according to claim 1, it is characterised in that: hot-blast outlet (12) with Being provided with dust chamber (9) between heat exchanger (8), the hot blast that hot-blast outlet (12) is discharged first settles through dust chamber (9) After, then contact with heat exchanger (8), finally enter in baking oven (4).

Single case rail mounted wood single-plate drying device the most according to claim 1, it is characterised in that: described wood single-plate Stoving rack (14), including support (19) and spacing reticulum (20), the stacking of multiple spacing reticulum (20) is hinged on support (19), limit The upper and lower surface of position reticulum (20) is fitted with spacing net (21), and spacing reticulum (20) bottom is provided with cushion block (22), cushion block (22) upper and lower two spacing reticulums (20) being separated, wood single-plate is placed between upper and lower two spacing reticulums (20), support (19) bottom is provided with pulley (23).

Single case rail mounted wood single-plate drying device the most according to claim 1, it is characterised in that: import (18) and outlet (6) ground is respectively arranged with input track (17) and output track (13), input track (17) and the one of output track (13) End is connected with drying track (5) respectively, and the other end of input track (17) and output track (13) connects pre-heap track (15), Input slide rail (16) and output slide rail (7) it is placed with respectively in input track (17) and output track (13).

Single case rail mounted wood single-plate drying device the most according to claim 1, it is characterised in that: described energy is airtight The tank wall of baking oven (4) is provided with heat-insulation layer.

Single case rail mounted wood single-plate drying device the most according to claim 1, it is characterised in that: described energy is airtight The inner side of the tank wall of baking oven (4) is provided with aluminum film reflecting layer.

Single case rail mounted wood single-plate drying device the most according to claim 1, it is characterised in that: the baking oven that energy is airtight (4) hot blast temperature of the port of export remains 70 DEG C-120 DEG C.