Aluminum alloy hot air two-way circulation energy-saving and environment-friendly wood drying kiln

Abstract

The utility model relates to timber processing equipment technical field discloses a kind of aluminium alloy hot air two-way circulation energy-saving environmental protection's timber drying kiln, including kiln storehouse, circulating assembly and rack assembly component, guide rail is laid in kiln storehouse inner bottom, and the moving seat of circulating assembly is slidably connected with guide rail by bottom roller, and driven chain is fixed in moving seat bottom, and drive mechanism is driven by motor to drive chain, driven chain is driven to run by the combination sprocket of double-layer structure, to move along guide rail in traction moving seat and bracket circulation, rack assembly component is located in bracket, and its support rod is slidably connected by pulley and the sliding slot on rack, and the interval can be adjusted. The utility model drives timber to circulate and move in kiln storehouse, breaks the uneven heating caused by static stacking, significantly improves drying efficiency and quality, and adjustable support structure adapts different specifications timber, enhances the versatility and flexibility of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of wood processing equipment, and in particular to an aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln. Background Technology

[0002] In the wood processing and manufacturing industry, drying is a crucial process, as its quality directly determines the physical properties and service life of the finished wood. Traditional wood drying operations are usually carried out in enclosed kilns. Existing conventional drying equipment generally adopts a static stacking operation mode, in which operators place and fix the wood to be dried on racks, then push it into the kiln, and hot air is introduced by a fan to heat and dehydrate the static wood.

[0003] However, this traditional static drying method has significant structural defects. Due to the large internal space of the kiln, it is difficult to achieve an absolutely uniform distribution of hot air flow, often resulting in dead zones where the temperature is excessively high or low. When wood is fixed in one position for a long time, wood at the air vents dries too quickly and is prone to cracking, while wood in the dead zones dries slowly or even fails to meet the required standards. This uneven heating leads to significant differences in moisture content within the same batch or even the same piece of wood, which can easily cause deformation and scrap during subsequent processing, seriously affecting production efficiency and product quality.

[0004] Therefore, this utility model proposes an energy-saving and environmentally friendly aluminum alloy hot air bidirectional circulation wood drying kiln to overcome the shortcomings of the existing technology. Utility Model Content

[0005] In view of the existing technology, traditional wood drying equipment generally adopts a static stacking operation mode, which leads to uneven heating and poor drying consistency of wood in the kiln. In addition, the spacing of the crossbars of the fixed placement rack cannot be adjusted, making it difficult to adapt to wood of different lengths and thicknesses. This results in low versatility, inconvenient loading, and unsatisfactory drying efficiency. The present invention aims to provide a wood drying kiln with an improved structure that can effectively solve the above problems: an aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln.

[0006] This utility model provides an aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln, comprising: a kiln chamber, a circulation component disposed inside the kiln chamber, and a placement rack component disposed on the circulation component; a guide rail is fixedly installed on the inner bottom of the kiln chamber; and a moving seat, a driven chain, a bracket, and a drive component in the circulation component.

[0007] The movable seat of the circulation component is located above the guide rail, and a roller is rotatably connected to the bottom of the movable seat. The roller slides in cooperation with the guide rail. The bracket is fixedly connected to the top of the movable seat, and the placement rack assembly is placed inside the bracket.

[0008] Furthermore, a driven chain is fixedly connected to the inner bottom of the movable seat, extending along the path of the guide rail and forming a circular loop; the drive assembly includes an auxiliary sprocket, a combined sprocket, a drive chain, and a drive motor; the drive motor is fixedly installed on the outer side of the kiln chamber, and the output shaft end of the drive motor is meshed with the drive chain; the combined sprocket is rotatably installed on the inner bottom surface of the kiln chamber, and the combined sprocket includes a top sprocket and a bottom sprocket arranged coaxially; the end of the drive chain away from the drive motor passes through the side wall of the kiln chamber and meshes with the bottom sprocket of the combined sprocket; the driven chain meshes with the top sprocket of the combined sprocket; the drive motor drives the combined sprocket to rotate through the drive chain, and then drives the driven chain to rotate through the combined sprocket, causing the movable seat to move cyclically along the guide rail via the rollers.

[0009] Preferably, the circulation assembly further includes several auxiliary sprockets, which are rotatably mounted on the ground inside the kiln chamber. The auxiliary sprockets are located on the left and right sides of the driven chain and mesh with the driven chain. The combined sprocket is located near the outer ring on one side opposite to the two auxiliary sprockets. The driven chain passes around the auxiliary sprockets and the combined sprocket in sequence to form a tensioning transmission structure, thereby enhancing the stability of the chain drive and preventing chain derailment.

[0010] Preferably, the shelf assembly includes a shelf, a support rod, a slide groove, and pulleys; the shelf has a multi-layer rectangular frame structure, and slide grooves are correspondingly provided on the horizontal beams on both sides of the shelf. The support rod is horizontally arranged between the horizontal beams on both sides of the shelf, and pulleys are rotatably connected to both ends of the support rod. The pulleys are slidably engaged inside the slide grooves, and the support rod slides back and forth along the length of the slide grooves via the pulleys to adjust the spacing, thereby flexibly adapting to different specifications of wood.

[0011] Preferably, the guide rail is laid in a racetrack-shaped closed loop at the bottom of the kiln chamber, and the rollers move in a unidirectional cycle along the track of the guide rail to realize the continuous flow of wood in different temperature zones.

[0012] Preferably, the outer wall of the kiln chamber is provided with a pipe opening, which is connected to the interior of the kiln chamber and is used to connect to an external hot air circulation system to introduce a heat source; the top of the kiln chamber is provided with a dehumidification outlet, which is used to discharge the moisture inside the kiln chamber.

[0013] Preferably, the bracket is welded from a corrosion-resistant aluminum alloy square tube, and the bottom of the bracket is fixedly connected to the top of the movable seat by bolts to adapt to high temperature and high humidity environments and prevent rust.

[0014] Preferably, the movable seat has a flat plate structure, and the number of rollers is at least four, which are symmetrically distributed at the four corners of the bottom of the movable seat to ensure the stability of the load.

[0015] Preferably, the drive motor is equipped with a speed reducer, and the output end of the speed reducer is meshed with the drive chain to provide low-speed and constant drive torque.

[0016] This utility model has the following beneficial effects: 1. This utility model, by setting up a circulation component including a guide rail, a moving seat and a chain transmission system, uses a motor to drive the moving seat to continuously circulate the wood in the kiln, which solves the problem of uneven heating and poor drying consistency in different areas caused by the fixed and static stacking of wood in the prior art. It achieves the technical effect of allowing the wood to alternately pass through different temperature and humidity areas during the movement, breaking the surface air boundary layer, and achieving comprehensive, uniform and efficient drying.

[0017] 2. This utility model solves the problem of poor versatility in the prior art, which is that the spacing of the crossbars of the fixed placement rack is not adjustable and it is difficult to adapt to wood of different lengths and thicknesses, by setting a support rod with pulleys in the placement rack assembly and cooperating with the sliding groove of the rack. It achieves the technical effect of being able to flexibly and steplessly adjust the support spacing according to the actual size of the wood, and significantly improving the loading flexibility and versatility of the equipment.

[0018] 3. This utility model, by adopting an S-shaped tensioning transmission structure with a combination of sprockets and double-sided auxiliary sprockets, solves the problem in the prior art that chain drives are prone to loosening, skipping teeth, or even chain derailment under long-distance load transportation, resulting in unstable operation. It achieves the technical effects of increasing the sprocket wrap angle, ensuring smooth and reliable power transmission, and extending the service life of the transmission system. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of an aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln proposed in this utility model. Figure 2 This is a schematic diagram of the structure of the support frame for an aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln proposed in this utility model. Figure 3 This is a schematic diagram of the circulation component of an aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln proposed in this utility model. Figure 4This is a schematic diagram of the structure of the placement rack assembly of an aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln proposed in this utility model.

[0020] Legend: 1. Kiln silo; 2. Circulation assembly; 201. Guide rail; 202. Moving seat; 203. Driven chain; 204. Bracket; 205. Auxiliary sprocket; 206. Combined sprocket; 207. Drive chain; 208. Drive motor; 209. Roller; 3. Placement rack assembly; 301. Shelf; 302. Support rod; 303. Slide groove; 304. Pulley; 4. Pipe opening; 5. Exhaust outlet. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Example: Please refer to Figures 1 to 4 This utility model provides an energy-saving and environmentally friendly aluminum alloy hot air bidirectional circulation wood drying kiln, which aims to solve the structural defects of the prior art, such as uneven heating and low drying efficiency caused by static stacking of wood, and poor versatility due to fixed spacing of the placement racks.

[0023] like Figure 1 and Figure 2 As shown, the aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln mainly includes a kiln chamber 1, which serves as the sealed main space for drying operations; a circulation component 2, which is installed inside the kiln chamber 1 to drive the material along a specific trajectory; and a placement rack component 3, which is installed above the circulation component 2 to flexibly support wood of different specifications. The outer wall of the kiln chamber 1 has a pipe opening 4 that communicates with the internal space. The pipe opening 4 is used to connect to an external hot air circulation system to deliver drying hot air into the chamber. The top of the kiln chamber 1 has a vent 5 for discharging moisture generated during the drying process. A rain cover is installed on the top of the vent 5 to protect the internal environment from external weather conditions.

[0024] To construct a stable motion foundation, a guide rail 201 is fixedly laid on the inner bottom of the kiln chamber 1. The guide rail 201 is distributed in a racetrack-shaped closed loop. The movable seat 202 in the circulation component 2 is suspended above the guide rail 201 and serves as the main load-bearing platform. The bottom of the movable seat 202 is rotatably connected to rollers 209. There are at least four rollers 209, which are symmetrically distributed at the four corners of the bottom of the movable seat 202. The rollers 209 slide with the guide rail 201, and the movement resistance is reduced by rolling friction, so that the movable seat 202 can make unidirectional circular movement along the trajectory of the guide rail 201. The movable seat 202 is a flat plate structure, and its top is fixedly connected to a bracket 204 by bolts. The bracket 204 is welded from corrosion-resistant aluminum alloy square tubes and has a multi-layer frame structure. The bracket 204 serves as a connecting medium, and its inner side is used to place and fix the placement frame component 3.

[0025] like Figure 3 As shown, the power transmission system driving the continuous operation of the moving base 202 is ingeniously designed. A driven chain 203 is fixedly connected to the inner bottom of the moving base 202 by welding or bolting. The driven chain 203 extends along the path of the guide rail 201 and forms a loop by connecting the ends. The drive motor 208, as the power source, is fixedly installed on the ground base outside the kiln chamber 1 by bolts. The drive motor 208 is equipped with a reducer to reduce the speed and increase the torque. The output shaft end of the reducer is meshed with a drive chain 207. The end of the drive chain 207 away from the drive motor 208 extends through the side wall of the kiln chamber 1 to the inner side. Inside the kiln chamber 1, a combined sprocket 206 is rotatably mounted on the bottom surface. The combined sprocket 206 includes a top sprocket and a bottom sprocket that are coaxially arranged and rotate synchronously. The driving chain 207 is engaged with the bottom sprocket of the combined sprocket 206, and the driven chain 203 is engaged with the top sprocket of the combined sprocket 206, thus forming a complete power transmission chain from the external motor to the internal moving seat 202. When the drive motor 208 starts, the driving chain 207 drives the combined sprocket 206 to rotate, which in turn drives the driven chain 203 to rotate, ultimately pulling the moving seat 202 and the bracket 204 to move cyclically within the kiln chamber 1.

[0026] To address the potential for chain slippage and ensure smooth transmission during chain drive, this embodiment further incorporates an auxiliary sprocket 205 in the circulation assembly 2. Please refer to this description carefully. Figure 3 Several auxiliary sprockets 205 are rotatably installed on the ground inside the kiln chamber 1. The specific layout of the auxiliary sprockets 205 is carefully designed. They are respectively set on the left and right sides of the driven chain 203 and maintain a tight meshing connection with the driven chain 203. This double-sided clamping method provides guidance and support for the driven chain 203.

[0027] The combined sprocket 206 is cleverly positioned near the outer ring on one side of the two auxiliary sprockets 205. During installation, the driven chain 203 passes around the auxiliary sprockets 205 and the combined sprocket 206 in sequence, forming an S-shaped or similar tension transmission structure. This meandering connection not only increases the wrap angle between the chain and the sprocket, improving transmission efficiency, but also effectively prevents the chain from skipping teeth or falling off when operating at high speed or under varying loads, ensuring the continuity and reliability of the movement of the moving seat 202.

[0028] Furthermore, addressing the issue that traditional drying equipment struggles to accommodate timber of varying sizes, the placement rack assembly 3 employs a unique adjustable design. Please refer to [reference needed]. Figure 4 The shelf assembly 3 includes a shelf 301, a support rod 302, a slide 303, and a pulley 304. The shelf 301 has a multi-layer rectangular frame structure, and its material is preferably high-strength aluminum alloy profile. On each horizontal beam on both sides of each layer of the shelf 301, a slide 303 extending along the length of the beam is correspondingly provided. The support rod 302 is horizontally spanned between the two horizontal beams of the shelf 301 to directly support the wood.

[0029] Both ends of the support rod 302 are rotatably connected to pulleys 304. The outer diameter of the pulleys 304 is matched with the inner diameter of the slide groove 303, so that the pulleys 304 can slide and engage inside the slide groove 303. With this structure, the operator only needs to push the support rod 302, and the pulleys 304 will roll in the slide groove 303, thereby driving the support rod 302 to slide back and forth along the length of the slide groove 303, realizing stepless adjustment of the distance between the support rods 302. This design allows the same shelf 301 to flexibly adapt to various types of wood of different lengths and thicknesses, greatly improving the versatility and loading flexibility of the equipment.

[0030] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, in order to ensure that the external hot air can be efficiently and evenly introduced into the kiln chamber 1 for circulation, the pipe opening 4 on the outer wall of the kiln chamber 1 is designed to be directly connected to the internal space. The pipe opening 4 is connected to the external hot air circulation system by means of flange or welding. The system may include a heater and a blower to continuously send the heated dry air into the chamber. At the same time, the vent 5 on the top of the kiln chamber 1 not only serves as a channel for moisture discharge, but the rain cover installed on its top adopts an umbrella-shaped or louvered structure, which can not only smoothly discharge moisture, but also effectively prevent rainwater backflow, ensuring the continuous operation of drying under various weather conditions.

[0031] As another preferred embodiment, in order to adapt to the harsh working environment of high temperature and high humidity inside the kiln chamber 1 and extend the service life of the equipment, the bracket 204 is made of corrosion-resistant aluminum alloy square tube. The tubes are connected by full welding to form a stable multi-layer frame structure. This material is not only lightweight, reducing the load on the drive motor 208, but also has excellent oxidation and corrosion resistance, effectively preventing the risk of rust contaminating the wood surface. The bottom of the bracket 204 is firmly connected to the top of the movable seat 202 by bolts, which facilitates subsequent maintenance and disassembly.

[0032] As another preferred embodiment, in order to ensure the stability and load-bearing capacity of the movable seat 202 when carrying heavy timber, the movable seat 202 is designed as a thick flat plate structure. The bottom rollers 209 are preferably wear-resistant and high-temperature resistant industrial-grade casters, and there are at least four of them, which are evenly and symmetrically distributed at the four corners of the bottom of the movable seat 202. This layout forms a stable support plane and minimizes swaying and tilting during movement.

[0033] As another preferred embodiment, in order to provide stable and strong power output, the drive motor 208 is not directly connected to the drive chain 207, but is equipped with a reducer. The output shaft of the drive motor 208 is first connected to the input end of the reducer, and the output end of the reducer is then connected to the drive sprocket of the drive chain 207 (not shown in the figure but implied in the meshing relationship) through a key connection or coupling. By reducing speed and increasing torque, it is ensured that even under full load, the drive system can start smoothly and maintain low-speed constant cyclic operation.

[0034] The working principle of this new aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln is as follows: In the preparation stage before the drying operation begins, the operator first manually adjusts the placement rack assembly 3 according to the specific specifications (length and thickness) of the wood to be dried. The operator pushes the support rod 302 on the rack 301 so that the pulley 304 at the end of the support rod 302 slides in the groove 303, thereby flexibly adjusting the spacing between the support rods 302 until it is suitable for stably placing the current batch of wood. After loading is completed, the placement rack assembly 3 is placed in the bracket 204.

[0035] Upon entering the drying stage, the drive motor 208 is started. After being reduced in speed and torque by the matching reducer, the drive motor 208 drives the drive chain 207 to rotate at a low speed. The drive chain 207 drives the combined sprocket 206 to rotate. Since the combined sprocket 206 is simultaneously engaged with the driven chain 203, and the driven chain 203 is fixedly connected to the bottom of the movable seat 202, the rotational torque of the sprocket is converted into a traction force on the driven chain 203. Under the guidance and tensioning of the auxiliary sprocket 205, the driven chain 203 smoothly pulls the movable seat 202.

[0036] The rollers 209 at the bottom of the movable seat 202 then begin to slide in a cycle along the racetrack-shaped guide rail 201 laid at the bottom of the kiln chamber 1. The bracket 204 carrying the wood then moves continuously in a one-way cycle inside the kiln chamber 1. At the same time, external hot air is sent in through the pipe opening 4. Together with the exhaust port 5 at the top and the internal airflow, a hot air circulation field is formed inside the kiln chamber 1. The wood continuously passes through different temperature and humidity zones during the movement, and the air boundary layer on its surface is continuously broken due to the movement, thereby achieving uniform heating and efficient drying of the wood, and completely solving the problem of uneven drying caused by static stacking.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An energy-saving and environmentally friendly aluminum alloy hot air bidirectional circulation wood drying kiln, comprising: A kiln chamber (1), a circulation assembly (2) disposed inside the kiln chamber (1), and a placement rack assembly (3) disposed on the circulation assembly (2); a guide rail (201) is fixedly installed on the inner bottom of the kiln chamber (1). The characteristic feature is that the circulation component (2) includes a movable seat (202), a driven chain (203), a bracket (204), and a drive component; the movable seat (202) is disposed above the guide rail (201), and a roller (209) is rotatably connected to the bottom of the movable seat (202), the roller (209) slides with the guide rail (201), the bracket (204) is fixedly connected to the top of the movable seat (202), and the placement rack component (3) is placed inside the bracket (204); the driven chain (203) is fixedly connected to the bottom inner side of the movable seat (202), and the driven chain (203) extends along the path of the guide rail (201) and forms a circular loop; the drive component includes an auxiliary sprocket (205), a combination sprocket (206), a drive chain (207), and a drive motor (208); The drive motor (208) is fixedly installed on the outside of the kiln chamber (1). The output shaft end of the drive motor (208) is meshed with a drive chain (207). The combined sprocket (206) is rotatably installed on the inner bottom surface of the kiln chamber (1). The combined sprocket (206) includes a top sprocket and a bottom sprocket arranged coaxially. The end of the drive chain (207) away from the drive motor (208) passes through the side wall of the kiln chamber (1) and meshes with the bottom sprocket of the combined sprocket (206).

2. The aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln according to claim 1, characterized in that, The driven chain (203) meshes with the top sprocket of the combined sprocket (206). The drive motor (208) drives the combined sprocket (206) to rotate via the drive chain (207), which in turn drives the driven chain (203) to rotate, causing the moving seat (202) to circulate along the guide rail (201) via the roller (209). The circulation assembly (2) also includes several auxiliary sprockets (205). The auxiliary sprocket (205) is rotatably mounted on the ground inside the kiln chamber (1). The auxiliary sprocket (205) is located on the left and right sides of the driven chain (203) and meshes with the driven chain (203). The combined sprocket (206) is located near the outer ring on the opposite side of the two auxiliary sprockets (205). The driven chain (203) passes around the auxiliary sprocket (205) and the combined sprocket (206) in sequence to form a tension transmission structure.

3. The aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln according to claim 1, characterized in that, The placement rack assembly (3) includes a shelf (301), a support rod (302), a slide (303), and a pulley (304). The shelf (301) has a multi-layer rectangular frame structure. Slide grooves (303) are provided on the horizontal beams on both sides of the shelf (301). The support rod (302) is horizontally arranged between the horizontal beams on both sides of the shelf (301). The two ends of the support rod (302) are respectively rotatably connected to pulleys (304). The pulleys (304) are slidably engaged in the interior of the slide grooves (303). The support rod (302) slides back and forth along the length direction of the slide grooves (303) through the pulleys (304) to adjust the spacing.

4. The aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln according to claim 1, characterized in that, The guide rail (201) is laid in a racetrack-shaped closed loop at the bottom of the kiln chamber (1), and the roller (209) moves in a unidirectional cycle along the trajectory of the guide rail (201).

5. The aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln according to claim 1, characterized in that, The outer wall of the kiln chamber (1) is provided with a pipe opening (4), which is connected to the interior of the kiln chamber (1) and is used to connect to an external hot air circulation system; the top of the kiln chamber (1) is provided with a dehumidification port (5), which is used to discharge the moisture inside the kiln chamber (1).

6. The aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln according to claim 1, characterized in that, The bracket (204) is welded from a corrosion-resistant aluminum alloy square tube, and the bottom of the bracket (204) is fixedly connected to the top of the movable seat (202) by bolts.

7. The aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln according to claim 1, characterized in that, The movable seat (202) has a flat plate structure, and the number of rollers (209) is at least four, which are symmetrically distributed at the four corners of the bottom of the movable seat (202).

8. The aluminum alloy hot air bidirectional circulation energy-saving and environmentally friendly wood drying kiln according to claim 1, characterized in that, The drive motor (208) is equipped with a speed reducer, and the output end of the speed reducer is meshed with the drive chain (207).

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