A wood powder drying device

Abstract

The present application belongs to the technical field of drying equipment, in particular to a wood powder drying device, which comprises a base, a feeding box, a feeding component, a pre-drying component, a rotating drying component, a discharging box and an air supply component; the feeding component is used to convey the wood powder in the feeding box to the pre-drying component connected with the feeding box; the pre-drying component is used for rapid drying of the wood powder; the pre-drying component is connected with the rotating drying component; the rotating drying component comprises a drying cylinder, a first supporting ring, a first supporting wheel, a first gear ring, a first driving gear and a first motor; by setting the pre-drying component at the front end of the rotating drying component, the water in the wood powder with high humidity is quickly removed, and then the wood powder is dispersed and lifted by the lifting plate in the drying cylinder, otherwise the wood powder is completely adhered together due to the high water content, and the drying efficiency of the rotating drying component is low, therefore, the pre-drying component greatly improves the drying efficiency of the subsequent rotating drying component.

Description

Technical Field

[0001] This invention belongs to the field of drying equipment technology, specifically a wood powder drying device. Background Technology

[0002] Wood powder drying primarily employs two technologies: rotary drum drying and airflow drying, suitable for the efficient processing of materials such as sawdust, wood powder, and sawdust. Rotary drum drying utilizes a combination of a rotating drum and a blower to fluidize the material within the drum, ensuring thorough contact between hot air and the material for drying. This method boasts strong continuous operation capabilities, processing up to 10 tons per hour, with a thermal efficiency of 80%, and energy consumption reduced by 60% compared to traditional equipment. Operation requires attention to uniform material distribution and stratified drying; equipment must be shut down according to the established procedures upon shutdown. Routine maintenance focuses on lubrication system upkeep and load control.

[0003] Undried wood flour typically has an initial moisture content of 50%-60%, and some wood flour produced from processing fresh wood can even reach over 65%. When the moisture content of wood flour exceeds 35%, it is prone to clumping, leading to an increase in energy consumption of over 40% during drying. Since wood flour drying equipment directly dries wood flour with high moisture content, this causes the material to clump together. Even after being lifted by the lifting plates inside the drying drum, it is difficult to disperse effectively, resulting in low drying efficiency and high energy consumption. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes a wood powder drying device. This invention primarily addresses the problem that existing wood powder drying equipment directly dries wood powder with high moisture content, causing the material to clump together and become difficult to disperse effectively even after being lifted by the lifting plates inside the drying drum. This results in low drying efficiency and high energy consumption.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: This invention provides a wood powder drying device, including a base, a feeding box, a feeding component, a pre-drying component, a rotating drying component, a discharge box, and an air supply component; the feeding box, the pre-drying component, the rotating drying component, and the discharge box are sequentially arranged on the base; one end of the base is fixedly connected to the feeding box; the feeding component is arranged inside the feeding box; the feeding component is used to transport the wood powder in the feeding box to the pre-drying component connected to the feeding box; the pre-drying component is used for rapid drying of the wood powder; the pre-drying component is connected to the rotating drying component; the rotating drying component includes a drying cylinder, a first support ring, a first support wheel, a first gear ring, a first drive gear, and a first motor; the inner cylindrical surface of the drying cylinder is arranged along a circle... The drying cylinder is equipped with uniformly spaced lifting plates along its circumferential direction; the lifting plates are arranged radially along the drying cylinder; at least two first support rings are fitted on the cylindrical surface of the drying cylinder; two first support wheels are symmetrically arranged below the first support rings; the first support wheels are rotatably connected to the base via rotating support seats; a first gear ring is fitted on the drying cylinder; the first gear ring meshes with a first drive gear; the first drive gear is rotatably connected to a first motor via a first reducer; the first motor is fixedly connected to the base via a mounting bracket; the drying cylinder and the discharge box are rotatably connected via a first bearing; the discharge box is fixedly connected to the base; a discharge port is provided at the lower end of the discharge box; and an air supply component with an internal integrated heating device is provided at the upper end of the discharge box.

[0006] During operation, the wood powder to be dried is fed into the feed hopper. The controller uses electrical signals to control the feeding component to continuously convey the wood powder from the feed hopper to the pre-drying component. The pre-drying component rapidly pre-dries the wood powder with high moisture content. After being processed by the pre-drying component, the wood powder gradually enters the rotary drying component. During this process, the air supply component continuously delivers hot air heated by the heating device into the drying drum. After a long drying process by the rotary drying component, the wood powder is dried to meet the usage requirements. Subsequently, the dried wood powder is discharged from the discharge hopper. This solution, by setting a pre-drying component at the front end of the rotary drying component, quickly removes moisture from the wood powder with high humidity, making it easier for the lifting plates in the drying drum to disperse and throw the wood powder down. Otherwise, due to the high moisture content of the wood powder, it will completely stick together, resulting in low drying efficiency of the rotary drying component. Therefore, by setting up a pre-drying component, the drying efficiency of the subsequent rotary drying component is greatly improved. Because the pre-drying component and the rotating drying component are tilted at an angle of 1-5°, the wood powder can move slowly and continuously towards the discharge box during the drying process. The hot air introduced by the air supply component exchanges heat with the wood powder and is discharged from the exhaust port that runs through the feed box. It can be discharged directly or connected to other systems for reuse. The exhaust port that runs through the feed box can also heat the rice powder in the feed box, thereby improving the utilization rate of hot air.

[0007] Preferably, the pre-drying component includes a drying cylinder, a rotating air supply ring, a second support ring, a second support wheel, a second gear ring, a second drive gear, and a second motor; the rotating air supply ring is fixedly connected to the end face of the feed box; the rotating air supply ring is an annular hollow structure; one side of the rotating air supply ring abuts against one end of the drying cylinder, and this side of the rotating air supply ring communicates with the interior of the double-layer structured drying cylinder; the other end of the drying cylinder is rotatably connected to the drying cylinder; the rotating air supply ring is provided with a connection port for connecting to an external hot air source; the inner wall of the drying cylinder is evenly spaced with dispersing pipes communicating with the interior of the drying cylinder; the dispersing pipes are provided with air blowing ports; at least two second support rings are fitted on the cylindrical surface of the drying cylinder; two second support wheels are symmetrically arranged below the second support rings; the second support wheels are rotatably connected to the base through a rotating support seat; the second gear ring is fitted on the drying cylinder; the second gear ring meshes with the second drive gear; the second drive gear is rotatably connected to the second motor through a second reducer; the second motor is fixedly connected to the base through a mounting bracket.

[0008] During operation, the controller controls the rotation of the second motor via electrical signals, which in turn drives the drying drum to rotate via the second reducer, the second drive gear, and the second gear ring. As the drying drum rotates, an external hot air source continuously supplies hot air to the rotating air supply ring through the connection port. The hot air enters the double-layered drying drum from the waist-shaped groove at one end and is then ejected from the air nozzle on the dispersing pipe. The rapid rotation of the drying drum drives the dispersing pipe to continuously cut and disperse the wood powder with high moisture content, allowing it to come into more thorough contact with the hot air ejected from the dispersing pipe, thus improving the drying effect. This solution forcibly disperses and lifts the wood powder with high moisture content, enabling it to quickly and fully contact the hot air, thereby rapidly removing moisture from the wood powder. This allows the wood powder to be dispersed by the lifting plates after entering the drying drum, ensuring the drying efficiency of the subsequent rotating drying components.

[0009] Preferably, the dispersing tube has an arc-shaped structure; and the air inlets are evenly spaced on the outer convex side of the arc surface of the dispersing tube.

[0010] The arc-shaped dispersing tube impacts the wood powder towards the center of the drying drum, allowing it to disperse more evenly within the drum. This improves contact with the hot air supplied by the air supply components, further enhancing drying efficiency. Furthermore, the air nozzles are evenly spaced along the convex arc surface of the dispersing tube. Therefore, the hot air ejected from the nozzles travels in the same direction as the impact of the arc-shaped dispersing tube on the wood powder. This combined impact and blowing force causes the wood powder to move over a wider area, resulting in better dispersion and more thorough contact with the hot air inside the drying drum. Consequently, heat exchange efficiency is higher, further improving the drying efficiency of the wood powder.

[0011] Preferably, the other end of the drying cylinder is rotatably connected to the drying cylinder via a flexible ring; one end of the flexible ring is rotatably connected to the drying cylinder via a second bearing; and the other end of the flexible ring is fixedly connected to the end of the drying cylinder.

[0012] The flexible ring is made of high-temperature resistant rubber material, and its interior is reinforced with spiral metal ribs during the casting process, which ensures the strength of the flexible ring and prevents deformation even when there is a large difference in rotation speed between the drying cylinder and the drying cylinder. The flexible ring connects the drying cylinder and the drying cylinder, preventing them from affecting each other due to different rotation speeds and vibration frequencies, thus preventing resonance and improving the stability and safety of their rotation.

[0013] Preferably, the feeding component includes a conveying pipe, a screw shaft, and a feeding motor; one end of the conveying pipe passes through the feeding box and is fixedly connected to the feeding box; the other end of the conveying pipe extends into the pre-drying component; the screw shaft is rotatably connected inside the conveying pipe; a screw plate is provided on the screw shaft; one end of the screw shaft is fixedly connected to the rotating shaft of the feeding motor; the feeding motor is fixedly connected to the end face of one end of the conveying pipe; an upper opening groove is provided on the conveying pipe corresponding to the area of ​​the feeding box; a lower opening groove is provided on the conveying pipe corresponding to the area of ​​the pre-drying component.

[0014] During operation, the controller controls the feeding motor to rotate via an electrical signal, which in turn drives the screw shaft to rotate. This allows the wood powder in the feed box to be transported to the pre-drying component via the rotating screw plate through the conveying pipe. Since the lower opening groove is relatively narrow, the screw plate can drive the wood powder to fall more evenly into the pre-drying component, thereby helping to improve the drying efficiency of the wood powder.

[0015] Preferably, the feeding component further includes a cam, a swing bracket, and a tension spring; the spiral shaft passes through the end face of the conveying pipe and is fixedly connected to the cam; the swing brackets are symmetrically arranged below the conveying pipe; the crossbar of the swing bracket is hinged to the outer wall of the conveying pipe; the crossbar of the swing bracket has evenly spaced teeth below it; a drive rod is fixedly connected above the crossbar of the swing bracket; the two drive rods are connected by the tension spring; the drive rod abuts against the cam.

[0016] During operation, the spiral shaft drives the spiral plate to rotate, continuously conveying wood powder into the pre-drying component. Simultaneously, the spiral shaft also drives the cam to rotate. The cam's maximum stroke arc surface alternately presses against the two drive rods. When the cam's maximum stroke arc surface presses against the drive rods, the drive rods deflect outwards, causing the insert teeth below the crossbar to swing towards the center. This effectively segments and disperses the wood powder conveyed from the lower opening slot, resulting in more dispersed wood powder within the pre-drying component and improved drying efficiency. The cam's continuous alternating pressure on the two drive rods ensures uninterrupted segmentation and dispersion of the wood powder, aligning with the continuous feeding rhythm. Furthermore, the insert teeth below the two crossbars can be staggered to further enhance the segmentation and dispersion effect.

[0017] Preferably, radially spaced baffles are evenly spaced along the axial direction on the inner cylindrical surface of the drying cylinder.

[0018] By nesting radial baffles inside the drying drum, when the drying drum rotates and the lifting plates lift and then lower the wood powder, the falling wood powder lands on the baffles. As the baffles rotate, the wood powder continuously rolls on their surface, allowing for better heat exchange with the hot air supplied by the air supply components, thus improving the drying effect. This solution increases the residence time of the wood powder in the middle of the drying drum by setting radial baffles, and the continuous tumbling of the wood powder on the baffles further enhances the drying effect.

[0019] Preferably, the width of the barrier plate is 200-300mm.

[0020] By limiting the width of the baffle plate to between 200-300mm, it ensures that the wood dust falling onto the baffle plate has enough time to dry, and also ensures that the wood dust can leave the baffle plate in time after reaching the preset degree of dryness. This achieves the optimal distribution of the coverage area of ​​the baffle plate and the lifting plate, allowing the wood dust to switch and move on the lifting plate and the baffle plate in the best way, thus achieving the best drying effect.

[0021] Preferably, the barrier plate is made of metal woven mesh, and the mesh diameter of the metal woven mesh is between 5-30mm.

[0022] By limiting the size of the barrier plate to a metal woven mesh with a mesh diameter between 5-30mm, and considering the varying adhesion between different degrees of wood powder dryness, limiting the mesh diameter ensures that the wood powder on the barrier plate, once dried to a certain extent, will naturally fall off through the mesh due to reduced adhesion. This allows for better control over the dryness of the wood powder, preventing over-drying caused by prolonged contact with the barrier plate, and also reduces the amount of wood powder remaining on the barrier plate, thus facilitating better drying of any remaining wood powder.

[0023] Preferably, the mesh diameter of each of the barrier plates gradually decreases along the direction of wood flour transfer.

[0024] Since the wood powder closer to the discharge box in the drying cylinder has a higher degree of dryness, the mesh diameter of the baffle plate at the corresponding position is smaller to ensure the wood powder stays on the baffle plate for a longer time, thus ensuring the drying effect of the wood powder.

[0025] The beneficial effects of this invention are as follows:

[0026] 1. In this invention, the wood powder to be dried is fed into the feeding box. The controller controls the feeding component via an electrical signal to continuously convey the wood powder from the feeding box to the pre-drying component. The pre-drying component rapidly pre-dries the wood powder with a high moisture content. After being processed by the pre-drying component, the wood powder gradually enters the rotary drying component. During this process, the air supply component continuously delivers hot air heated by the heating device into the drying cylinder. After a long drying process by the rotary drying component, the wood powder is dried to meet the usage requirements. Subsequently, the dried wood powder is discharged from the discharge box. This solution, by setting a pre-drying component at the front end of the rotary drying component, quickly removes moisture from the wood powder with high humidity, thus facilitating the dispersion and dispersing of the wood powder by the lifting plates inside the drying cylinder. Otherwise, due to the high moisture content of the wood powder, it will completely adhere together, resulting in low drying efficiency of the rotary drying component. Therefore, by setting the pre-drying component, the drying efficiency of the subsequent rotary drying component is greatly improved.

[0027] 2. In this invention, the controller controls the rotation of the second motor via an electrical signal, which in turn drives the drying cylinder to rotate sequentially via the second reducer, the second drive gear, and the second gear ring. During the rotation of the drying cylinder, an external hot air source continuously supplies hot air into the rotating air supply ring through the connection port. The hot air enters the double-layered drying cylinder from the waist-shaped groove at one end of the drying cylinder, and then is sprayed out from the air outlet on the dispersing pipe. The rapid rotation of the drying cylinder drives the dispersing pipe to continuously cut and disperse the wood powder with high moisture content, thereby enabling it to come into more thorough contact with the hot air sprayed out from the dispersing pipe, thus improving the drying effect. This solution forces the wood powder with high moisture content to disperse and lift, enabling it to quickly and fully contact the hot air, thereby rapidly removing the moisture from the wood powder. This allows the wood powder to be dispersed by the lifting plates after entering the drying cylinder, thus ensuring the drying efficiency of the subsequent rotating drying components.

[0028] 3. In this invention, the arc-shaped dispersing tube can impact the wood powder towards the center of the drying cylinder, thereby allowing the wood powder to be more evenly dispersed within the drying cylinder. This enables better contact with the hot air supplied by the air supply component, further improving drying efficiency. Moreover, the air nozzles are evenly spaced on one side of the convex arc surface of the dispersing tube. Therefore, the hot air ejected from the air nozzles is in the same direction as the impact of the arc-shaped dispersing tube on the wood powder. Consequently, under the combined force of impact and blowing, the wood powder is driven over a larger range, resulting in better dispersion and more thorough contact with the hot air inside the drying cylinder. This leads to higher heat exchange efficiency and ultimately improves the drying efficiency of the wood powder.

[0029] 4. In this invention, the spiral shaft drives the spiral plate to rotate, continuously conveying wood powder into the pre-drying component. During this process, the spiral shaft also drives the cam to rotate continuously. The arc surface of the cam at its maximum stroke alternately presses against the two drive rods. When the arc surface of the cam at its maximum stroke presses against the drive rods, the drive rods deflect outwards, causing the insert teeth below the crossbars to swing towards the center. This process divides and disperses the wood powder conveyed from the lower opening groove, making the wood powder more dispersed after entering the pre-drying component, thus improving the drying effect. The cam continuously and alternately presses against the two drive rods, achieving uninterrupted alternating division and dispersion of the wood powder. This ensures that the division and dispersion operation conforms to the rhythm of continuous feeding. Furthermore, the insert teeth below the two crossbars can be staggered to further improve the division and dispersion effect. Attached Figure Description

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic diagram of the overall structure of the drying device of the present invention from a first-view perspective;

[0032] Figure 2 This is a schematic diagram of the overall structure of the drying device of the present invention from a second perspective;

[0033] Figure 3 This is a schematic diagram of the internal structure of the drying device of the present invention;

[0034] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0035] Figure 5 This is a schematic diagram of the drying cylinder in this invention;

[0036] Figure 6 This is a schematic diagram showing the relative positions of the feeding component and the pre-drying component in this invention;

[0037] Figure 7 This is a schematic diagram of the feeding component in this invention from a first-view perspective;

[0038] Figure 8 This is a schematic diagram of the feeding component in this invention from a second perspective;

[0039] Figure 9 This is a schematic diagram of the swing bracket in this invention;

[0040] Figure 10 This is a schematic diagram of the internal structure of the feeding component in this invention;

[0041] Figure 11 This is a schematic diagram of the structure of the drying cylinder in this invention;

[0042] Figure 12 This is a schematic diagram of the internal structure of the drying cylinder in this invention;

[0043] Figure 13 yes Figure 12 A magnified view of a section at point B in the middle;

[0044] In the diagram: Base 1, Feeding box 2, Feeding component 3, Conveying pipe 31, Upper opening groove 311, Lower opening groove 312, Spiral shaft 32, Spiral plate 321, Feeding motor 33, Cam 34, Swinging bracket 35, Crossbar 351, Inserting tooth 352, Drive rod 353, Tension spring 36, Pre-drying component 4, Drying cylinder 41, Dispersing pipe 411, Air outlet 4111, Rotating air supply ring 42, Second support ring 43, Second support wheel 44, Second gear ring 45, Second drive gear 46, Second motor 47, Flexible ring 48, Second bearing 49, Rotating drying component 5, Drying cylinder 51, Lifting plate 511, First support ring 52, First support wheel 53, First gear ring 54, First drive gear 55, First motor 56, First bearing 57, Barrier plate 58, Discharge box 6, Air supply component 7. Detailed Implementation

[0045] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0046] like Figures 1 to 3 , Figure 13As shown, a wood powder drying device includes a base 1, a feeding box 2, a feeding component 3, a pre-drying component 4, a rotary drying component 5, a discharge box 6, and an air supply component 7. The feeding box 2, the pre-drying component 4, the rotary drying component 5, and the discharge box 6 are sequentially arranged on the base 1. The feeding box 2 is fixedly connected to one end of the base 1. The feeding component 3 is arranged inside the feeding box 2. The feeding component 3 is used to transport the wood powder in the feeding box 2 to the pre-drying component 4 connected to the feeding box 2. The pre-drying component 4 is used for rapid drying of the wood powder. The pre-drying component 4 is connected to the rotary drying component 5. The rotary drying component 5 includes a drying cylinder 51, a first support ring 52, a first support wheel 53, a first gear ring 54, a first drive gear 55, and a first motor 56. Lifting plates 511 are evenly spaced along the circumference on the inner cylindrical surface of the drying cylinder 51. The lifting plate 511 is arranged radially along the drying cylinder 51; at least two first support rings 52 are fitted on the cylindrical surface of the drying cylinder 51; two first support wheels 53 are symmetrically arranged below the first support rings 52; the first support wheels 53 are rotatably connected to the base 1 via a rotating support seat; the first gear ring 54 is fitted on the drying cylinder 51; the first gear ring 54 meshes with the first drive gear 55; the first drive gear 55 is rotatably connected to the first motor 56 via a first reducer; the first motor 56 is fixedly connected to the base 1 via a mounting bracket; the rotating cylinder of the drying cylinder 51 is rotatably connected to the discharge box 6 via a first bearing 57; the discharge box 6 is fixedly connected to the base 1; the lower end of the discharge box 6 is provided with a discharge port; the upper end of the discharge box 6 is provided with the air supply component 7 with an internal integrated heating device.

[0047] During operation, the wood powder to be dried is fed into the feed hopper 2. The controller controls the feeding component 3 via an electrical signal to continuously convey the wood powder in the feed hopper 2 to the pre-drying component 4. The pre-drying component 4 rapidly pre-dries the wood powder with a high moisture content. After being processed by the pre-drying component 4, the wood powder gradually enters the rotary drying component 5. During this process, the air supply component 7 continuously delivers hot air heated by the heating device into the drying cylinder 51. After a long drying process by the rotary drying component 5, the wood powder is dried to meet the usage requirements. Subsequently, the dried wood powder is discharged from the discharge hopper 6. This solution, by setting a pre-drying component 4 at the front end of the rotary drying component 5, quickly removes moisture from the wood powder with high humidity, thus facilitating the dispersion and dispersing of the wood powder by the lifting plates 511 inside the drying cylinder 51. Otherwise, due to the high moisture content of the wood powder, it will completely adhere together, resulting in low drying efficiency of the rotary drying component 5. Therefore, by setting the pre-drying component 4, the drying efficiency of the subsequent rotary drying component 5 is greatly improved. Because the pre-drying component 4 and the rotating drying component 5 are tilted at an angle of 1-5°, the wood powder can move slowly towards the discharge box 6 during the drying process. The hot air introduced by the air supply component 7 exchanges heat with the wood powder and is discharged from the exhaust hole through the feed box 2. It can be discharged directly or connected to other systems for reuse. The exhaust hole through the feed box 2 can also heat the rice powder in the feed box 2, thereby improving the utilization rate of hot air.

[0048] like Figures 1 to 6 As shown, the pre-drying component 4 includes a drying cylinder 41, a rotating air supply ring 42, a second support ring 43, a second support wheel 44, a second gear ring 45, a second drive gear 46, and a second motor 47. The rotating air supply ring 42 is fixedly connected to the end face of the feed box 2. The rotating air supply ring 42 has an annular hollow structure. One side of the rotating air supply ring 42 is in contact with one end of the drying cylinder 41, and this side of the rotating air supply ring 42 is connected to the interior of the double-layer structure of the drying cylinder 41. The other end of the drying cylinder 41 is rotatably connected to the drying cylinder 51. The rotating air supply ring 42 is provided with a connection port for connecting to an external hot air source. The inner wall of the drying cylinder 41 has... Dispersing pipes 411, which communicate with the interior of the drying cylinder 41, are evenly spaced; air blowing ports 4111 are provided on the dispersing pipes 411; at least two second support rings 43 are fitted on the cylindrical surface of the drying cylinder 41; two second support wheels 44 are symmetrically arranged below the second support rings 43; the second support wheels 44 are rotatably connected to the base 1 through a rotating support seat; a second gear ring 45 is fitted on the drying cylinder 41; the second gear ring 45 meshes with the second drive gear 46; the second drive gear 46 is rotatably connected to the second motor 47 through a second reducer; the second motor 47 is fixedly connected to the base 1 through a mounting bracket.

[0049] During operation, the controller controls the second motor 47 to rotate via an electrical signal, which in turn drives the drying cylinder 41 to rotate via the second reducer, the second drive gear 46, and the second gear ring 45. During the rotation of the drying cylinder 41, an external hot air source continuously supplies hot air to the rotating air supply ring 42 through the connection port. The hot air enters the double-layer structure of the drying cylinder 41 from the waist-shaped groove at one end of the drying cylinder 41, and then is sprayed out from the air blowing port 4111 on the dispersing pipe 411. The rapid rotation of the drying cylinder 41 drives the dispersing pipe 411 to continuously cut and disperse the wood powder with high moisture content, so that it can come into more complete contact with the hot air sprayed out of the dispersing pipe 411, thereby improving the drying effect. This solution forces the wood powder with high moisture content to disperse and lift, so that it can quickly and fully contact the hot air, thereby quickly removing the moisture from the wood powder. This allows the wood powder to be dispersed by the lifting plate 511 after entering the drying cylinder 51, thereby ensuring the drying efficiency of the subsequent rotating drying component 5.

[0050] like Figure 5 As shown, the dispersing tube 411 has an arc-shaped structure; and the air inlets 4111 are evenly spaced on the outer convex arc surface of the dispersing tube 411.

[0051] The arc-shaped dispersing tube 411 can impact the wood powder towards the center of the drying cylinder 41, thereby making the wood powder more evenly dispersed in the drying cylinder 41 and better contacting the hot air supplied by the air supply component 7, further improving the drying efficiency. Moreover, the air blowing ports 4111 are evenly spaced on the convex arc surface of the dispersing tube 411. Therefore, the hot air ejected from the air blowing ports 4111 is in the same direction as the impact of the arc-shaped dispersing tube 411 on the wood powder. Under the dual action of impact and blowing, the wood powder is driven to move over a larger range, resulting in better dispersion and more sufficient contact with the hot air in the drying cylinder 41. This leads to higher heat exchange efficiency and improves the drying efficiency of the wood powder.

[0052] like Figure 4 As shown, the other end of the drying cylinder 41 is rotatably connected to the drying cylinder 51 via a flexible ring 48; one end of the flexible ring 48 is rotatably connected to the drying cylinder 41 via a second bearing 49; the other end of the flexible ring 48 is fixedly connected to the end of the drying cylinder 51.

[0053] The flexible ring 48 is made of high-temperature resistant rubber material, and its interior is reinforced with spiral metal ribs during the casting process, thus ensuring the strength of the flexible ring 48. This prevents the flexible ring 48 from deforming even when there is a large difference in rotational speed between the drying cylinder 41 and the drying cylinder 51. The flexible ring 48 connects the drying cylinder 41 and the drying cylinder 51, preventing them from affecting each other due to different rotational speeds and vibration frequencies, thus preventing resonance and improving the stability and safety of their rotation.

[0054] like Figures 6 to 10 As shown, the feeding component 3 includes a conveying pipe 31, a spiral shaft 32, and a feeding motor 33; one end of the conveying pipe 31 passes through the feeding box 2 and is fixedly connected to the feeding box 2; the other end of the conveying pipe 31 extends into the pre-drying component 4; the spiral shaft 32 is rotatably connected inside the conveying pipe 31; a spiral plate 321 is provided on the spiral shaft 32; one end of the spiral shaft 32 is fixedly connected to the rotating shaft of the feeding motor 33; the feeding motor 33 is fixedly connected to the end face of one end of the conveying pipe 31; an upper opening groove 311 is provided on the conveying pipe 31 corresponding to the area of ​​the feeding box 2; a lower opening groove 312 is provided on the conveying pipe 31 corresponding to the area of ​​the pre-drying component 4.

[0055] During operation, the controller controls the feeding motor 33 to rotate via an electrical signal, which in turn drives the spiral shaft 32 to rotate. This allows the wood powder in the feed box 2 to be transported to the pre-drying component 4 via the rotating spiral plate 321 along the conveying pipe 31. Since the lower opening groove 312 is a relatively narrow groove, the driving force of the spiral plate 321 allows the wood powder to fall more evenly into the pre-drying component 4, thereby helping to improve the drying efficiency of the wood powder.

[0056] like Figure 9 As shown, the feeding component 3 further includes a cam 34, a swing bracket 35, and a tension spring 36; the spiral shaft 32 passes through the end face of the conveying pipe 31 and is fixedly connected to the cam 34; the swing brackets 35 are symmetrically arranged below the conveying pipe 31; the crossbar 351 of the swing bracket 35 is hinged to the outer wall of the conveying pipe 31; the crossbar 351 of the swing bracket 35 has evenly spaced teeth 352 below it; the crossbar 351 of the swing bracket 35 is fixedly connected to the top of it; the two drive rods 353 are connected by the tension spring 36; the drive rods 353 abut against the cam 34.

[0057] During operation, the spiral shaft 32 drives the spiral plate 321 to rotate, continuously conveying wood powder into the pre-drying component 4. Simultaneously, the spiral shaft 32 also drives the cam 34 to rotate continuously. The arc surface of the cam 34 at its maximum stroke alternately presses against the two drive rods 353. When the arc surface of the cam 34 at its maximum stroke presses against the drive rods 353, the drive rods 353 deflect outwards, causing the insert teeth 352 below the crossbar 351 to swing towards the center. This effectively divides and disperses the wood powder conveyed from the lower opening groove 312, making the wood powder more dispersed after entering the pre-drying component 4, thus improving the drying effect. The cam 34 continuously and alternately presses against the two drive rods 353, achieving uninterrupted alternating division and dispersion of the wood powder. This ensures that the division and dispersion operation matches the continuous feeding rhythm. Furthermore, the insert teeth 352 below the two crossbars 351 can be staggered, further enhancing the division and dispersion effect of the insert teeth 352.

[0058] like Figures 11 to 12 As shown, radially spaced baffle plates 58 are uniformly arranged along the axial direction on the inner cylindrical surface of the drying cylinder 51.

[0059] By nesting radial baffle plates 58 inside the drying cylinder 51, when the drying cylinder 51 rotates and the lifting plate 511 lifts and then throws the wood powder down, the thrown wood powder falls onto the baffle plates 58. As the baffle plates 58 rotate, the wood powder on them continuously rolls on the surface of the baffle plates 58, which allows for better heat exchange with the hot air supplied by the air supply component 7, thereby improving the drying effect. This solution increases the residence time of the wood powder in the middle of the drying cylinder 51 by setting radial baffle plates 58, and the wood powder continuously rolls on the baffle plates 58, thereby improving the drying effect of the wood powder.

[0060] The width of the barrier plate 58 is 200-300mm.

[0061] By limiting the width of the baffle plate 58 to between 200-300mm, it ensures that the wood dust falling onto the baffle plate 58 has enough time to dry, and also ensures that the wood dust falling onto the baffle plate 58 can leave the baffle plate 58 in a timely manner after reaching the preset degree of dryness. This achieves the optimal distribution of the coverage area of ​​the baffle plate 58 and the lifting plate 511, allowing the wood dust to switch and move on the lifting plate 511 and the baffle plate 58 in the best way, thereby achieving the best drying effect.

[0062] The barrier plate 58 is made of metal woven mesh, and the mesh diameter of the metal woven mesh is between 5-30mm.

[0063] By limiting the surface of the barrier plate 58 to be made of metal woven mesh with a mesh diameter between 5-30mm, the adhesion between different degrees of wood powder dryness varies. By limiting the mesh diameter of the metal woven mesh, the wood powder on the barrier plate 58 will fall off the mesh on its own when it dries to a certain extent due to the reduced adhesion between them. This allows for better control of the wood powder's dryness, preventing over-drying caused by prolonged contact with the barrier plate 58. It also reduces the amount of wood powder remaining on the barrier plate 58, thus facilitating better drying of any remaining wood powder.

[0064] Along the direction of wood powder transfer, the mesh diameter of each of the barrier plates 58 gradually decreases.

[0065] Since the wood powder closer to the discharge box 6 in the drying cylinder 51 has a higher degree of dryness, the mesh diameter of the baffle plate 58 at the corresponding position is set to be smaller, so as to ensure the residence time of the wood powder on the baffle plate 58, and thus ensure the drying effect of the wood powder.

[0066] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A wood flour drying apparatus, characterized by: The utility model provides a wood powder drying device, including base (1), feed tank (2), feed component (3), pre -drying component (4), rotary drying component (5), discharge tank (6) and air supply component (7), the base (1) is sequentially provided feed tank (2), pre -drying component (4), rotary drying component (5) and discharge tank (6), one end of the base (1) is fixedly connected the feed tank (2), the feed tank (2) is provided the feed component (3) inside, the feed component (3) is used for conveying wood powder in the feed tank (2) to the pre -drying component (4) connected with the feed tank (2), the pre -drying component (4) is used for wood powder to carry out fast drying, the pre -drying component (4) is connected with the rotary drying component (5), the rotary drying component (5) includes drying cylinder (51), first support ring (52), first support wheel (53), first gear ring (54), first drive gear (55) and first motor (56), the inner cylindrical surface of drying cylinder (51) is evenly spaced and set in circumferential direction lifting blade (511), the lifting blade (511) is along the radial direction of drying cylinder (51) setting, the cylindrical surface of drying cylinder (51) is at least set two first support ring (52), two first support wheel (53) are symmetrically set below first support ring (52), first support wheel (53) is rotatably connected on the base (1) through rotating support seat, the first gear ring (54) is set on drying cylinder (51), the first gear ring (54) is engaged with the first drive gear (55), the first drive gear (55) is rotatably connected with the first motor (56) through first speed reducer, the first motor (56) is fixedly connected on the base (1) through mounting frame, the rotary drying component (5) is rotatably connected between the discharge tank (6) through first bearing (57), the discharge tank (6) is fixedly connected on the base (1), the discharge tank (6) lower end is provided with discharge port, the upper end of discharge tank (6) is provided with the air supply component (7) of internal integrated heating device.

2. A wood flour drying apparatus according to claim 1, characterized in that: The pre-drying component (4) comprises a drying cylinder (41), a rotating air supply ring (42), a second support ring (43), a second support wheel (44), a second gear ring (45), a second driving gear (46) and a second motor (47); the rotating air supply ring (42) is fixedly connected to the end face of the feeding box (2); the rotating air supply ring (42) is a ring-shaped hollow structure; one side of the rotating air supply ring (42) is in abutting connection with one end of the drying cylinder (41), and the side of the rotating air supply ring (42) is in communication with the inside of the drying cylinder (41) with a double-layer structure; the other end of the drying cylinder (41) is rotatably connected to the drying cylinder (51); the rotating air supply ring (42) is provided with a connecting port connected to an external hot air source; the inner wall of the drying cylinder (41) is uniformly and interval ly provided with a scattering pipe (411) in communication with the inside of the drying cylinder (41); the scattering pipe (411) is provided with a blowing port (4111); at least two second support rings (43) are sleeved on the cylindrical surface of the drying cylinder (41); two second support wheels (44) are symmetrically arranged below the second support ring (43); the second support wheel (44) is rotatably connected to the base (1) through a rotating support seat; the second gear ring (45) is sleeved on the drying cylinder (41); the second gear ring (45) is in meshing connection with the second driving gear (46); the second driving gear (46) is rotatably connected to the second motor (47) through a second speed reducer; the second motor (47) is fixedly connected to the base (1) through a mounting bracket.

3. A wood flour drying apparatus according to claim 2, wherein: The scattering pipe (411) is in an arc-shaped structure; and the blowing ports (4111) are uniformly and interval ly arranged on the convex side arc surface of the scattering pipe (411).

4. A wood flour drying apparatus according to claim 2, wherein: The other end of the drying cylinder (41) is rotatably connected to the drying cylinder (51) through a flexible ring (48); one end of the flexible ring (48) is rotatably connected to the drying cylinder (41) through a second bearing (49); the other end of the flexible ring (48) is fixedly connected to the end of the drying cylinder (51).

5. A wood flour drying apparatus according to claim 1, wherein: The feeding component (3) comprises a conveying pipe (31), a spiral shaft (32) and a feeding motor (33); one end of the conveying pipe (31) penetrates through the feeding box (2), and the end is fixedly connected to the feeding box (2); the other end of the conveying pipe (31) extends into the pre-drying component (4); the spiral shaft (32) is rotatably connected in the conveying pipe (31); the spiral shaft (32) is provided with a spiral plate (321); one end of the spiral shaft (32) is fixedly connected to the rotating shaft of the feeding motor (33); the feeding motor (33) is fixedly connected to the end face of one end of the conveying pipe (31); the conveying pipe (31) is provided with an upper opening slot (311) corresponding to the region of the feeding box (2); the conveying pipe (31) is provided with a lower opening slot (312) corresponding to the region of the pre-drying component (4).

6. A wood flour drying apparatus according to claim 5, wherein: The feeding component (3) further comprises a cam (34), a swing bracket (35) and a tension spring (36); the screw shaft (32) is fixedly connected with the cam (34) after penetrating through the end face of the conveying pipe (31); the swing bracket (35) is symmetrically arranged below the conveying pipe (31); the crossbar (351) of the swing bracket (35) is hingedly connected to the outer wall of the conveying pipe (31); the evenly spaced teeth (352) are inserted below the crossbar (351) of the swing bracket (35); the driving rod (353) is fixedly connected above the crossbar (351) of the swing bracket (35); the two driving rods (353) are connected through the tension spring (36); and the driving rods (353) abut against the cam (34).

7. A wood flour drying apparatus according to claim 1, wherein: The inner cylindrical surface of the drying cylinder (51) is uniformly and axially spaced with radial blocking plates (58).

8. A wood flour drying apparatus according to claim 7, wherein: The plate surface width of the blocking plate (58) is 200-300mm.

9. A wood flour drying apparatus according to claim 8, wherein: The plate surface of the blocking plate (58) is made of a metal woven mesh, and the mesh hole diameter of the metal woven mesh is between 5-30mm.

10. A wood flour drying apparatus according to claim 9, wherein: The mesh hole diameter of each blocking plate (58) gradually decreases in sequence along the transfer direction of the wood powder.

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