Turnover device of drying drum machine

Abstract

The utility model relates to the technical field of wood processing equipment, in particular to a material turning device of a drying drum machine, which comprises a drum body and a plurality of shoveling plates, the plurality of shoveling plates are divided into a plurality of groups, and each group of shoveling plates are arranged on the inner wall of the drum body along the circumferential direction; the shoveling plate is of a hollow structure and is filled with a moisture absorption module; the face, opposite to the rotating direction of the barrel, of the shoveling plate is a material contact face, a plurality of protrusions and fine holes are evenly distributed on the material contact face, and the material contact face is covered with a hydrophilic layer. The moisture absorption module is arranged in the shoveling plate, so that moisture on the surfaces of wood shavings is directly absorbed while the wood shavings are turned over and raised, the drying efficiency of the drying drum machine is effectively improved, and energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of wood processing equipment, specifically to a turning device for a drying drum machine. Background Technology

[0002] In wood processing and engineered wood product manufacturing, wood shavings drying is a crucial step that directly impacts product quality and performance. Currently, rotary drum dryers are commonly used in wood shavings drying. Their working principle primarily involves the circulation of hot air within the drum, removing moisture from the surface of the wood shavings to achieve drying. However, traditional drying methods have several drawbacks. Firstly, drying efficiency is low: due to the varying shapes and sizes of the wood shavings, their uneven distribution within the drum makes it difficult for the hot air to fully contact each shaving, resulting in some shavings being under-dried while others may be over-dried, leading to energy waste. Secondly, energy consumption is high: to achieve the desired drying effect, a continuous supply of large amounts of hot air is required, undoubtedly increasing energy consumption and production costs.

[0003] As a crucial component of a rotary dryer, the lifting plates primarily function to tumble and lift wood shavings, increasing the contact area between the shavings and hot air. Currently, the lifting plates in rotary dryers mainly serve to disperse the material, failing to fully exploit their potential in the drying process. If a dehumidification structure could be incorporated within the lifting plates, allowing them to directly absorb moisture from the surface of the wood shavings while tumbling and lifting them, drying efficiency would be significantly improved, and energy consumption reduced. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a material turning device for a drying drum machine to solve the problems of low drying efficiency and high energy consumption of existing drying drum machines.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A material turning device for a drying drum includes a drum body and multiple lifting plates. The lifting plates are divided into multiple groups, and each group of lifting plates is arranged circumferentially on the inner wall of the drum body. The lifting plates are hollow and filled with moisture-absorbing modules. The side of the lifting plate facing away from the rotation direction of the drum body is the material contact surface. Multiple protrusions and fine holes are evenly distributed on the material contact surface, and the material contact surface is covered with a hydrophilic layer.

[0007] As a further embodiment of this utility model, the angle between the lifting plate and the axis of the cylinder is 30°-60°.

[0008] As a further embodiment of this utility model, the moisture-absorbing module is bonded to the inner cavity of the lifting plate, and its shape and size are adapted to the inner cavity of the lifting plate.

[0009] As a further embodiment of this utility model: wherein the protrusion is hemispherical, the fine hole is circular, and the diameter of the fine hole is smaller than that of the protrusion.

[0010] As a further embodiment of this utility model, the plurality of protrusions and holes are arranged in a rectangular array, and the protrusions and holes are staggered in the array direction.

[0011] As a further embodiment of this invention, the hydrophilic layer covers the protrusions and exposes the pores.

[0012] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0013] This utility model provides a material turning device for a drying drum machine. By setting a moisture-absorbing module inside the lifting plate and setting multiple protrusions and fine holes on the surface of the lifting plate, and covering it with a hydrophilic layer, when the wood shavings move upward along the surface of the lifting plate, the water vapor on the surface of the wood shavings can be removed by the collision and vibration of the protrusions, and then quickly diffused into the vent holes by the spreading effect of the hydrophilic layer, and enter the interior of the lifting plate through the fine holes, where it is absorbed by the moisture-absorbing module.

[0014] Compared with existing technology's flipping mechanism, this invention can not only flip and lift the wood shavings to exchange heat with hot air, but also adsorb moisture from the surface of the wood shavings, thereby effectively improving the drying efficiency of the drying drum and reducing energy consumption. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the material turning device of the drying drum machine according to an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view of the copying board described in the embodiment;

[0018] Figure 3 for Figure 1 A three-dimensional view of the copying plate described in the embodiment, with the hydrophilic layer hidden.

[0019] The correspondence between the labels and component names in the attached figures is as follows:

[0020] 1. Cylinder; 2. Lifting plate; 3. Moisture-absorbing module; 4. Protrusion; 5. Fine pores; 6. Hydrophilic layer. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the following description is to be considered exemplary in nature and not restrictive.

[0022] Please refer to Figure 1-3 In one embodiment of the material turning device of the drying drum machine according to the present invention, the material turning device of the drying drum machine includes a drum body 1 and a plurality of lifting plates 2:

[0023] The drum 1 is installed at an angle, and multiple lifting plates 2 are arranged in groups along the axial direction of the drum 1. Each group of lifting plates 2 is arranged circumferentially on the inner wall of the drum 1. When the drum 1 rotates, the lifting plates 2 continuously tumble and lift the wood shavings before letting them fall freely, forming a "material curtain" inside the drum 1. This increases the contact area between the wood shavings and hot air, improving heat exchange efficiency. Simultaneously, due to the tilt and rotation of the drum 1, the wood shavings move slowly from the feed end to the discharge end under the action of their own gravity and the friction of the drum 1. This is the conventional design and brief working principle of existing rotary drum dryers.

[0024] Furthermore, the lifting plate 2 has a hollow structure, preferably a shell structure; the lifting plate 2 is filled with a moisture-absorbing module 3, which can absorb moisture through physical adsorption. The side of the lifting plate 2 facing away from the rotation direction of the cylinder 1 is the material contact surface, on which multiple protrusions 4 and fine holes 5 are evenly distributed. The function of the protrusions 4 is that when wood shavings come into contact with the lifting plate 2 with the protrusions 4, vibration and collision will occur. This vibration can break the water vapor boundary layer on the surface of the wood shavings, making it easier for water vapor to detach from the surface of the wood shavings. The function of the fine holes 5 is to allow the water vapor detached from the surface of the wood shavings to pass through, and thus be absorbed by the moisture-absorbing module 3. The material contact surface is covered with a hydrophilic layer 6, which can increase the affinity between the water vapor on the surface of the wood shavings and the material contact surface, making it easier for water vapor to adhere to the material contact surface and enter the interior of the lifting plate 2 through the fine holes 5.

[0025] As a preferred embodiment, the angle between the lifting plate 2 and the axis of the cylinder 1 is 30°-60°. This angle can ensure that the wood shavings have enough time to stay on the lifting plate 2, while also being able to be smoothly flipped and lifted by the lifting plate 2.

[0026] As a preferred embodiment, the moisture-absorbing module 3 is a module of a specific shape and size made of a material with high moisture absorption performance. This material can be silica gel, molecular sieves, activated alumina, etc. These materials have a large number of microporous structures, enabling them to absorb moisture through physical adsorption. The shape and size of the moisture-absorbing module 3 are adapted to the inner cavity of the lifting plate 2. During installation, the moisture-absorbing module 3 is filled into the inner cavity of the lifting plate 2, and a high-temperature resistant and moisture-resistant adhesive is used to bond the moisture-absorbing module 3 to the inner wall of the lifting plate 2.

[0027] As a preferred embodiment, the protrusion 4 is hemispherical in shape, and its size should be moderate, generally with a height between 2-5 mm and a diameter or side length between 3-8 mm. If the protrusion 4 is too small, it may not be able to effectively break the water vapor boundary layer on the surface of the wood shavings; if it is too large, it may affect the normal movement of the wood shavings on the lifting plate 2. The fine hole 5 is circular, and its diameter is smaller than that of the protrusion 4. It can be determined according to the average particle size of the wood shavings, and usually a diameter between 0.5-2 mm is more suitable, so that water vapor can pass through smoothly while blocking the wood shavings.

[0028] As a preferred embodiment, the multiple protrusions 4 and the fine holes 5 are arranged in a rectangular array, and the protrusions 4 and the fine holes 5 are staggered in the array direction, so that all the protrusions 4 and the fine holes 5 are more evenly distributed on the material contact surface of the lifting plate 2, which is conducive to the passage of water vapor through the fine holes 5.

[0029] As a preferred embodiment, the hydrophilic layer 6 is made of materials such as titanium dioxide or silane-based hydrophilic materials, which have good hydrophilicity, enabling water vapor to spread rapidly on the surface of the lifting plate 2, reducing the surface tension of water vapor on the surface of the lifting plate 2, thereby accelerating the diffusion rate of water vapor into the pores 5. The hydrophilic layer 6 covers the protrusions 4 and exposes the pores 5, which can prevent impurities and dust on the shaving surface from accumulating around the pores 5 and keep the pores 5 unobstructed.

[0030] The method of use or working principle of this utility model is as follows:

[0031] When the cylinder 1 rotates, the wood shavings inside the cylinder 1 move upward along the material contact surface of the lifting plate 2. During the movement, the wood shavings collide with the protrusions 4 and generate vibration. This vibration can break the water vapor boundary layer on the surface of the wood shavings, causing the water vapor to detach from the surface of the wood shavings. The detached water vapor diffuses rapidly into the air pores under the spreading effect of the hydrophilic layer 6. Then, it enters the interior of the lifting plate 2 through the fine holes 5 and is then adsorbed by the moisture absorption module 3. Finally, the wood shavings that have detached from the surface water vapor are flipped and lifted up by the action of the lifting plate 2, and exchange heat with the hot air.

[0032] Once the moisture-absorbing module 3 reaches saturation, it needs to be regenerated. This can be achieved by heating the lifting plate 2 to evaporate and discharge the moisture in the moisture-absorbing module 3, thus restoring its moisture-absorbing capacity.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A turnover device of a drying drum machine, comprising a cylinder (1) and a plurality of scoops (2), the plurality of scoops (2) are divided into a plurality of groups, and each group of scoops (2) is arranged in a circumferential direction on the inner wall of the cylinder (1); characterized in that, The said blade (2) is a hollow structure, the said blade (2) is filled with a hygroscopic module (3); the side of the said blade (2) opposite to the rotating direction of the said cylinder (1) is a material contact surface, the said material contact surface is uniformly distributed with a plurality of protrusions (4) and pores (5), and the said material contact surface is covered with a hydrophilic layer (6).

2. A turning device for a drying drum machine according to claim 1, characterized in that The included angle between the said blade (2) and the axis of the said cylinder (1) is 30°-60°.

3. A turning device for a drying drum machine according to claim 1, characterized in that, The said hygroscopic module (3) is bonded in the inner cavity of the said blade (2), and the shape and size thereof are adapted to the inner cavity of the said blade (2).

4. The turnover device of a drying drum machine according to claim 1, characterized in that, The said protrusions (4) are hemispheres, and the said pores (5) are circular, and the diameter of the said pores (5) is smaller than that of the said protrusions (4).

5. The turnover device of a drying drum machine according to claim 1, characterized in that, The plurality of the said protrusions (4) and pores (5) are distributed in a rectangular array, and the said protrusions (4) and pores (5) are staggered in the array direction.

6. A turning device for a drying drum machine according to claim 1, characterized in that, The said hydrophilic layer (6) covers the said protrusions (4) and exposes the said pores (5).

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