Wood drying and dehydrating and painting device and drying and dehydrating and painting method
By designing an automatic feeding and collecting wood drying and dehydration coating device, the problem of existing devices being unable to automatically feed and collect materials has been solved, improving coating efficiency and effect. It is suitable for coating wood of different sizes and realizes an environmentally friendly and energy-saving coating process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WENZHOU UNIV
- Filing Date
- 2023-07-24
- Publication Date
- 2026-06-23
AI Technical Summary
Existing wood coating equipment cannot automatically feed and coat wood after drying, which affects coating efficiency and cannot automatically collect the material, resulting in poor coating effect.
A wood drying, dehydration, and coating device was designed, including a drying furnace body, a heating chamber, a fixed plate, a servo motor-driven coating roller, and a hydraulic mechanism. The device enables automatic feeding and coating of wood after drying. During the coating process, multiple coatings such as raw tung oil, ash oil, and hot tung oil are used. The device automatically collects the wood after coating.
It enables automatic feeding and coating of dried wood, improving coating efficiency. It is suitable for wood of different sizes, has good coating effect, wide application range, and is environmentally friendly and energy-saving.
Smart Images
Figure CN117123435B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wood drying, dehydration, and coating technology, and particularly to a wood drying, dehydration, and coating apparatus. The invention also relates to a drying, dehydration, and anti-corrosion coating method using the aforementioned apparatus. Background Technology
[0002] Ancient Chinese architecture is primarily based on wood. However, many historical wooden buildings have been destroyed by insects, mold, natural disasters, and human-caused calamities, highlighting the urgent need to strengthen the protection of these structures.
[0003] The primary causes of damage to ancient wooden buildings are pests and diseases, as well as corrosion of the wood caused by rain and moisture. Therefore, to properly maintain and repair ancient wooden buildings, it is necessary to pay attention to the direct causes and underlying factors that lead to pests and diseases in the wood. Furthermore, comprehensive protection should be provided to wooden buildings through physical barriers, protective coatings, architectural design, and especially more microscopic structural design, so as to effectively prevent and control pests and diseases and reduce the erosion of the wood by moisture through coatings.
[0004] Research has shown that the physical changes in wood used for the restoration of historical buildings, after carbonization and dehydration, result in excellent preservative properties. Further painting can significantly extend its lifespan and enhance its aesthetics. Currently, two main types of preservatives are suitable for use on wood used in historical buildings: water-based and oil-based preservatives. Specialized painting equipment is required to ensure both effective painting and preservative effects. However, conventional painting equipment has the following drawbacks: it cannot automatically feed and paint the wood after it has dried, thus affecting painting efficiency, and it also lacks automatic material collection. Therefore, those skilled in the art have provided a wood drying, dehydration, and painting device to address the problems mentioned in the background section. Summary of the Invention
[0005] The main objective of this invention is to provide a wood drying, dehydration, and coating device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A wood drying, dehydration and coating device includes a drying oven body (19), a heating chamber (3) and a fixing plate (12);
[0008] The bottom of the drying furnace body (19) is provided with a heating chamber (3), and a support plate (2) is bolted to the bottom of the heating chamber (3). Sliding sleeves (1) are bolted to both sides of the drying furnace body (19), and sliding rods (6) slide inside the sliding sleeves (1). One end of the sliding rod (6) passes through a support rod (17), and a sealing plate (16) is installed between the support rods (17) through a fixing block. A hopper (18) is installed on one side of the sealing plate (16) through a locking bolt (15). An electrically controlled flap is provided at the bottom of the hopper (18). A fixing plate (12) is provided below the sealing plate (16). Servo motor A (11) and servo motor B (13) are respectively installed on both ends of one side of the fixing plate (12) through mounting bases. The output shafts of servo motor A (11) and servo motor B (13) are respectively installed with coating roller A (8) and coating roller B (21) through bolts. A storage groove (9) is provided directly below the coating roller A (8) and coating roller B (21).
[0009] Preferably, servo motor controller A (10) and servo motor controller B (14) are respectively mounted on the outside of servo motor A (11) and servo motor B (13) by bolts; the output terminals of servo motor controller A (10) and servo motor controller B (14) are respectively electrically connected to the input terminals of servo motor A (11) and servo motor B (13) by wires.
[0010] Preferably, the top of the drying furnace body (19) is connected to the heating chamber (3) via a regenerating pipe (20).
[0011] Preferably, an end plate (7) is welded to one end of the top of the support plate (2), and one end of the coating roller A (8) and the coating roller B (21) are connected to the end plate (7) through bearings.
[0012] Preferably, the bottom ends of the support plate (2) are bolted to support base plates (5), and one side of the heating chamber (3) is connected to a side door (4) via a rotating shaft.
[0013] Preferably, the bearings configured for the coating rollers A (8) and B (21) are both supported on a support seat, which is set on a slide rail (22) that can move left and right. The hydraulic mechanism (23) drives the coating rollers A (8) and B (21) to open and close on the slide rail (22).
[0014] Preferably, the bearings configured for the coating rollers A (8) and B (21) are both supported on a support seat, which is set on a slide rail (22) that can move left and right. The hydraulic mechanism (23) drives the coating rollers A (8) and B (21) to open and close on the slide rail (22).
[0015] Preferably, the coating roller A (8) and coating roller B (21) are each equipped with a plurality of oil brushes, and each oil brush is equipped with a material pot, which is connected to the oil brush.
[0016] The present invention also provides a drying, dehydration, and anti-corrosion coating method using the above-mentioned wood drying, dehydration, and coating apparatus, characterized by comprising the following steps:
[0017] Step 1: Place all the wood rods to be dried into the hopper (18), push the hopper (18) into the drying furnace body (19), and then continue heating to pyrolyze the surface of the wood in the drying furnace body (19);
[0018] Step 2: After drying, pull the sealing plate (16) to one side. The sealing plate (16) drives the hopper (18) connected to it by bolts to move above the coating roller. The dried wood is completely carried out by the hopper (18). At this time, control the flip plate to swing downward to pour the dried wood out. Servo motor A (11) and servo motor B (13) drive the coating roller A (8) and coating roller B (21) to rotate respectively. Under the action of servo motor controller A (10) and servo motor controller B (14), the coating roller A (8) and coating roller B (21) rotate in opposite directions, so as to coat the falling dried wood in sequence. The coating method includes first brushing raw tung oil, then brushing gray oil, then brushing hot tung oil, and finally brushing indigo varnish. After coating, take it out and let it dry.
[0019] Preferably, the coating roller A (8) and coating roller B (21) are respectively equipped with four sets of oil brushes and oil cans. The oil cans are all fixed on the side wall of the coating chamber. The oil cans have oil inlets that open outwards. The oil brushes are distributed in layers and each is in contact with its corresponding coating roller. During the coating process, raw tung oil is first poured into the oil can, and the coating roller is kept rotating for 1-3 minutes. Then, ash oil is poured into the second oil can, and the coating roller is kept rotating for 1-3 minutes. Then, hot tung oil is poured into the third oil can, and the coating roller is kept rotating for 1-3 minutes. Finally, indigo varnish is poured into the fourth oil can, and the coating roller is kept rotating for 1-3 minutes.
[0020] Compared with the prior art, the beneficial effects of the present invention are:
[0021] 1. Loosen the locking bolts and remove the hopper from the sealing plate and place it into the main body of the drying furnace. Place the wood pieces to be dried into the hopper. The hopper acts as a limit, pushing the sealing plate to make the sliding rod slide in the sliding sleeve, thereby realizing the stable opening and closing of the sealing plate. Open the side door to facilitate the addition of fuel for combustion, causing the wood in the main body of the drying furnace to pyrolyze, forming wood tar and high-temperature wood gas. The high-temperature wood gas is then transported to the heating chamber for heating and combustion through the heat recovery pipe, achieving energy-saving and environmental protection effects.
[0022] 2. After drying, the operator tightens the locking bolts to fix the hopper to the sealing plate, then pulls the sealing plate to one side. The dried wood is then carried out by the hopper. Servo motors A and B drive the coating rollers A and B to rotate, and under the control of servo motor controllers A and B, the coating rollers A and B rotate in opposite directions, thus sequentially coating the falling dried wood. This achieves automatic feeding and coating, greatly improving coating efficiency, making it highly practical and suitable for widespread use. 3. The hydraulic mechanism of this invention drives the support base to move, which in turn drives the coating rollers A and B to separate and close. This opening and closing adjustment allows for coating of wood of different sizes. After coating, the separation of coating rollers A and B allows the wood to automatically fall onto the receiving platform, thereby improving the applicability and receiving efficiency of the coating device. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of a wood drying, dehydration, and coating device provided by the present invention.
[0024] Figure 2 This is a schematic diagram of the structure of a wood drying and dehydration coating device provided by the present invention, viewed from the coating section.
[0025] Figure 3 This is a three-dimensional structural diagram of a wood drying, dehydration, and coating device provided by the present invention, viewed from the perspective of the heating chamber.
[0026] Figure 4 This is a schematic diagram of the structure of the brush roller opening and closing drive of a wood drying and dehydration brushing device provided by the present invention.
[0027] In the diagram: 1. Sliding sleeve; 2. Support plate; 3. Heating chamber; 4. Side door; 5. Support base plate; 6. Sliding rod; 7. End plate; 8. Coating roller A; 9. Storage trough; 10. Servo motor controller A; 11. Servo motor A; 12. Fixing plate; 13. Servo motor B; 14. Servo motor controller B; 15. Locking bolt; 16. Sealing plate; 17. Support rod; 18. Hopper; 19. Drying oven body; 20. Regenerator pipe; 21. Coating roller B; 22. Slide rail; 23. Hydraulic mechanism. Detailed Implementation
[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0029] Reference Figure 1-4As shown, in an embodiment of the wood drying, dehydration and coating device provided by the present invention, a drying furnace body 19, a heating chamber 3 and a fixing plate 12 are included;
[0030] A heating chamber 3 is located at the bottom of the drying oven body 19, and a support plate 2 is bolted to the bottom of the heating chamber 3. Sliding sleeves 1 are bolted to both sides of the drying oven body 19, and sliding rods 6 slide inside the sliding sleeves 1. The sliding rods 6 and the sliding sleeves 1 are generally fitted with pulleys. For structural stability, a slide rail can also be configured below the sliding rods 6, and the pulleys below the sliding rods 6 slide on the slide rail. A support rod 17 passes through one end of the sliding rod 6, and a sealing plate 16 is installed between the support rods 17 through a fixing block. One side of the sealing plate 16 is secured by a locking bolt 15. A hopper 18 is installed, and both the sealing plate 16 and the hopper 18 are driven by a slide rod to move back and forth between the heating chamber and the coating area. An electrically controlled flip plate is installed at the bottom of the hopper 18. A fixing plate 12 is installed below the sealing plate 16, and servo motors A11 and B13 are respectively installed on both ends of one side of the fixing plate 12 via mounting bases. The output shafts of servo motors A11 and B13 are respectively installed on coating rollers A8 and B21 via bolts. A storage groove 9 is provided directly below coating rollers A8 and B21.
[0031] Servo motor controllers A10 and B14 are respectively mounted on the outside of servo motors A11 and B13 by bolts; servo motor controllers A10 and B14 control the speed and angle of servo motors A11 and B13 respectively.
[0032] The output terminals of servo motor controllers A10 and B14 are electrically connected to the input terminals of servo motors A11 and B13 respectively via wires. Under the action of servo motor controllers A10 and B14, the coating rollers A8 and B21 rotate in opposite directions, thereby sequentially coating the falling dry wood. The top of the drying oven body 19 is connected to the heating chamber 3 via a regenerative pipe 20; the heating chamber 3 is used to heat the drying oven body 19.
[0033] The support plate 2 has an end plate 7 welded to one top end, and one end of each of the coating rollers A8 and B21 is connected to the end plate 7 via bearings, improving the stability of the coating rollers A8 and B21 during rotation. Support base plates 5 are bolted to both ends of the support plate 2, and one side of the heating chamber 3 is connected to a side door 4 via a rotating shaft, providing a seal for the heating chamber 3. Each of the coating rollers A8 and B21 is equipped with multiple oil brushes, and each oil brush has a feed container connected to it.
[0034] Reference Figure 4As shown, to allow the wood to fall downwards after being coated with the preservative material, the bearings of both the coating rollers A8 and B21 are supported on support seats, which are mounted on slide rails 22 that can move left and right. A hydraulic mechanism 23 drives the coating rollers A8 and B21 to open and close on the slide rails 22. The hydraulic mechanism 23 drives the support seats to move, thus separating and closing the coating rollers A8 and B21. This opening and closing adjustment allows for coating different sized pieces of wood. After coating, the separation of the coating rollers A8 and B21 allows the wood to automatically fall onto a receiving platform, which can be a conveyor belt made of steel rollers.
[0035] Reference Figure 1-4 As shown, the present invention also provides a drying, dehydration, and anti-corrosion coating method implemented using the above-mentioned wood drying, dehydration, and coating device, characterized by comprising the following steps:
[0036] Step 1: Place all the wood pieces to be dried into the hopper 18, push the hopper 18 into the drying furnace body 19, and then continue heating to pyrolyze the surface layer of the wood in the drying furnace body 19.
[0037] Step 2: After drying, pull the sealing plate 16 to one side. This can be done by motor-driven pulling. The sealing plate 16 moves the hopper 18, which is bolted to it, above the coating roller. The dried wood is completely carried out by the hopper 18. At this time, control the flip plate to swing downwards and pour the dried wood out. Servo motors A11 and B13 drive the coating rollers A8 and B21 to rotate respectively. Under the action of servo motor controllers A10 and B14, the coating rollers A8 and B21 rotate in opposite directions, thereby coating the falling dried wood in sequence. The coating method includes first brushing with raw tung oil, then brushing with gray oil, then brushing with hot tung oil, and finally brushing with indigo varnish. After coating, remove and let dry.
[0038] The aforementioned coating rollers A8 and B21 are each equipped with four sets of oil brushes and oil cans. The oil cans are all fixed on the side wall of the coating chamber and have outward-opening oil inlets. The oil brushes are distributed in layers and each is in contact with its corresponding coating roller. During the coating process, raw tung oil is first poured into the oil can, and the coating roller is kept rotating for 1-3 minutes, preferably 1.2 minutes. Then, ash oil is poured into the second oil can, and the coating roller is kept rotating for 1-3 minutes. Then, hot tung oil is poured into the third oil can, and the coating roller is kept rotating for 1-3 minutes, preferably 1.2 minutes. Finally, indigo varnish is poured into the fourth oil can, and the coating roller is kept rotating for 1-3 minutes, preferably 1.2 minutes.
[0039] The working principle of this invention is as follows: Loosen the locking bolt 15 to remove the hopper 18 from the sealing plate 16 and place it into the drying furnace body 19. Place the wood rods to be dried into the hopper 18 and push it into the heating chamber. Push the sealing plate 16 to make the sliding rod 6 slide in the sliding sleeve 1, thereby realizing the stable opening and closing of the sealing plate 16. Open the side door 4 to facilitate the addition of fuel for combustion, causing the surface layer of the wood in the drying furnace body 19 to pyrolyze, forming wood tar and high-temperature wood gas. The high-temperature wood gas is then transported to the heating chamber 3 for heating and combustion through the heat recovery pipe 20, achieving energy-saving and environmentally friendly effects. After drying, the operator tightens the locking bolt 15 to fix the hopper 18 onto the sealing plate 16 and closes the sealing plate 18. The plate 16 is pulled out to one side, which can be driven by a motor. The sealing plate 16 moves the hopper 18, which is bolted to it, to the top of the coating roller. The dried wood is completely carried out by the hopper 18. At this time, the control flap swings downward to pour the dried wood out. Servo motors A11 and B13 drive the coating rollers A8 and B21 to rotate respectively. Under the action of servo motor controllers A10 and B14, the coating rollers A8 and B21 rotate in opposite directions, thereby coating the falling dried wood in sequence. This achieves automatic feeding and coating, which greatly improves the coating efficiency, is highly practical, and is suitable for widespread use. Regarding the selection of the aforementioned coatings, the applicant consulted a large number of domestic and international literatures, conducted field research on over 400 historical buildings in southern Zhejiang, and carried out comparative experiments and verifications on more than 30 kinds of wood protective coatings, including polyurethane, acrylic resins (BXS), "nano waterproofing agents," epoxy resins, raw tung oil, boiled tung oil, tung oil lime, linseed oil, raw lacquer, oil-based asphalt, alkyd varnish, and paraffin oil. Experimental results show that among the more than 30 coatings tested, tung oil and lime have better bonding performance with wood, better water resistance, are non-toxic to humans and animals, and are environmentally friendly. Therefore, the applicant will focus its next research on using tung oil and lime as the main formulation for wood insect-proofing, anti-corrosion coatings, and fillers for wood cavities. The excellent performance of tung oil lime mortar comes from the dense structure formed by the coordination and bonding of Ca²⁺ ions and the oxidative polymerization of unsaturated double bonds in tung oil molecules. Therefore, mortar prepared with tung oil and calcium hydroxide has better mechanical properties, water resistance, and weather resistance than ordinary lime mortar. The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A wood drying, dehydration and coating device, comprising a drying oven body (19), a heating chamber (3) and a fixing plate (12); Its features are: The bottom of the drying oven body (19) is provided with a heating chamber (3), and a support plate (2) is bolted to the bottom of the heating chamber (3). Sliding sleeves (1) are bolted to both sides of the drying oven body (19), and sliding rods (6) slide inside the sliding sleeves (1). One end of the sliding rod (6) passes through a support rod (17), and a sealing plate (16) is installed between the support rods (17) through a fixing block. A hopper (18) is installed on one side of the sealing plate (16) through a locking bolt (15). The bottom of the hopper (18) is equipped with an electrically controlled flap, and a fixing plate (12) is provided below the sealing plate (16). Both ends of one side of the fixing plate (12) are respectively equipped with a servo motor A (11) and a servo motor B (13) via mounting bases. The output shafts of the servo motor A (11) and the servo motor B (13) are respectively equipped with a coating roller A (8) and a coating roller B (21) via bolts. A storage groove (9) is provided directly below the coating roller A (8) and the coating roller B (21). The top of the drying oven body (19) is connected to the heating chamber (3) through a heat recovery pipe (20); The bearings of the coating rollers A (8) and B (21) are both supported on the support base, which is set on the slide rail (22) that can move left and right. The hydraulic mechanism (23) drives the coating rollers A (8) and B (21) to open and close on the slide rail (22). Through this opening and closing adjustment, coating of wood of different sizes can be achieved. After coating, the coating rollers A (8) and B (21) are driven to separate so that the wood automatically falls onto the receiving platform.
2. The wood drying, dehydration, and coating device according to claim 1, characterized in that: Servo motor controller A (10) and servo motor controller B (14) are respectively mounted on the outside of servo motor A (11) and servo motor B (13) by bolts; the output terminals of servo motor controller A (10) and servo motor controller B (14) are respectively electrically connected to the input terminals of servo motor A (11) and servo motor B (13) by wires.
3. A wood drying, dehydration, and coating device according to claim 1 or 2, characterized in that: The support plate (2) has an end plate (7) welded to one end, and one end of the coating roller A (8) and coating roller B (21) are connected to the end plate (7) through bearings.
4. A wood drying, dehydration, and coating device according to claim 1 or 2, characterized in that: The bottom ends of the support plate (2) are bolted to support base plates (5), and one side of the heating chamber (3) is connected to a side door (4) via a rotating shaft.
5. A wood drying, dehydration, and coating device according to claim 1 or 2, characterized in that: The coating rollers A (8) and B (21) are each equipped with a plurality of oil brushes, and each oil brush is equipped with a material pot, which is connected to the oil brush.
6. The drying, dehydration, and anti-corrosion coating method implemented using the wood drying, dehydration, and coating apparatus according to claim 5, characterized in that: Includes the following steps: Step 1: Place all the wood rods to be dried into the hopper (18), push the hopper (18) into the drying furnace body (19), and then continue heating to pyrolyze the surface of the wood in the drying furnace body (19); Step 2: After drying, pull the sealing plate (16) to one side. The sealing plate (16) drives the hopper (18) connected to it by bolts to move above the coating roller. The dried wood is completely carried out by the hopper (18). At this time, control the flip plate to swing downward to pour the dried wood out. Servo motor A (11) and servo motor B (13) drive the coating roller A (8) and coating roller B (21) to rotate respectively. Under the action of servo motor controller A (10) and servo motor controller B (14), the coating roller A (8) and coating roller B (21) rotate in opposite directions, so as to coat the falling dried wood in sequence. The coating method includes first brushing raw tung oil, then brushing gray oil, then brushing hot tung oil, and finally brushing indigo varnish. After coating, take it out and let it dry.
7. The drying, dehydration, and anti-corrosion coating method implemented by the wood drying, dehydration, and coating device according to claim 6, characterized in that: The coating rollers A (8) and B (21) are respectively equipped with four sets of oil brushes and oil cans. The oil cans are fixed on the side wall of the coating chamber. The oil cans have an oil inlet that opens outward. The oil brushes are distributed in layers and each is in contact with its corresponding coating roller. During the coating process, raw tung oil is first poured into the oil can and the coating roller is kept rotating for 1-3 minutes. Then, ash oil is poured into the second oil can and the coating roller is kept rotating for 1-3 minutes. Then, hot tung oil is poured into the third oil can and the coating roller is kept rotating for 1-3 minutes. Finally, indigo varnish is poured into the fourth oil can and the coating roller is kept rotating for 1-3 minutes.