A paper product drying mechanism

Abstract

The application relates to the paper product drying technical field, in particular to a paper product drying mechanism, which comprises a drying box body, a hot air distribution assembly and a tension adjusting assembly. The hot air distribution assembly realizes uniform dispersion of hot air through a flow guide plate, a shunt cavity and rotating blades, and first and second heating units provide differential heating for the middle and edge regions of the paper product. The tension adjusting assembly dynamically adjusts the paper product tension by using a sliding block, an elastic member and an adjusting roller, thereby ensuring operation stability. The application can solve the problems of uneven hot air distribution, low drying efficiency and insufficient paper shape control of traditional equipment, and significantly improves the drying effect and product quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of paper product processing equipment, specifically a paper product drying mechanism. Background Technology

[0002] With the development of the paper product processing industry, drying, as a key step in the production process, directly affects product quality and production efficiency. Paper products typically contain high moisture content after coating, printing, and impregnation processes, requiring rapid and uniform moisture removal through drying equipment to ensure smooth subsequent processing. However, existing drying equipment still suffers from problems such as uneven drying, high energy consumption, and easy paper deformation or damage, making it difficult to meet the demands of modern, efficient, energy-saving, and intelligent production.

[0003] A search revealed a drying mechanism for a vertical sizing and drying equipment, published on September 14, 2021, with publication number CN111270546B. This patent provides a drying mechanism for sizing raw paper, including a drying tower and a liquid collection device. It collects excess glue dripping during the drying process, preventing ground contamination and facilitating cleanup. Its structural design emphasizes glue recovery and is suitable for continuously upward-conveyed raw paper drying scenarios. However, this solution primarily addresses the process characteristics of sizing paper. Its drying method relies on hot air flowing from top to bottom or horizontally, resulting in uneven hot air distribution. Especially when the paper width is wide, the edges are prone to under-drying or over-drying. Furthermore, the device lacks effective control over the tension and flatness of the paper during operation, easily leading to warping or wrinkling at high temperatures, affecting the final product quality. While its liquid collection structure facilitates maintenance, it does not consider hot air recycling, resulting in low energy efficiency and failing to meet current energy conservation and emission reduction technology development trends.

[0004] A search revealed a drying mechanism for a digital printing machine for cardboard boxes, published on September 24, 2024, with publication number CN108340688B. This patent relates to the drying process after printing on cardboard, employing a combination of a fan, heating unit, and drying unit. It features a hot air channel, a blowing channel, and a circulating air duct, enabling oblique blowing of hot air onto the cardboard surface and reuse of the returned air, offering advantages such as rapid drying and energy saving. This structure recovers some heat energy through the circulating air duct, improving energy efficiency and preventing direct impact of hot air on the printing machine's electronic components. However, this drying mechanism primarily targets the drying of wet ink after printing. Its hot air action time is short, and its penetration is weak, only suitable for surface moisture evaporation. Its effectiveness in removing internal moisture from thick cardboard or multi-layered paper products is limited. Furthermore, its fixed air duct structure cannot adjust airflow and temperature distribution according to paper type or humidity changes, lacking intelligent control capabilities. In addition, the device lacks a paper flattening or tension adjustment mechanism, making it prone to uneven drying due to paper vibration during high-speed operation, potentially leading to quality problems such as blurred ink.

[0005] The aforementioned problems indicate that existing paper drying mechanisms generally suffer from uneven hot air distribution, low drying efficiency, high energy consumption, lack of effective control over paper morphology, and poor adaptability, making it difficult to simultaneously meet multiple requirements such as high efficiency, uniformity, energy saving, and paper protection. Especially when dealing with paper products of varying thicknesses, materials, or moisture contents, the limited adjustment capabilities of existing equipment restrict the flexibility of production lines and the stability of product quality. Therefore, there is an urgent need for a new type of paper drying mechanism with a reasonable structure, uniform drying, high energy efficiency, and good paper adaptability to overcome the shortcomings of existing technologies and meet the demands of the modern paper processing industry for high-quality, intelligent drying equipment. Utility Model Content

[0006] This utility model relates to a paper product drying mechanism, including a drying chamber, a hot air distribution component, and a tension adjustment component. The hot air distribution component is installed inside the drying chamber, and tension adjustment components are symmetrically arranged on the inner walls of both sides of the drying chamber.

[0007] The hot air distribution assembly includes a guide plate, a flow-dividing cavity, rotating blades, a drive motor, a first heating unit, and a second heating unit. A guide plate, stepped in shape, is fixed to the top inner wall of the drying chamber, with its bottom end connected to the inlet of the flow-dividing cavity. The flow-dividing cavity is hollow, containing rotating blades. The central axis of each blade penetrates one side wall of the flow-dividing cavity and extends to the outside, with its outer end fixedly connected to the output shaft of the drive motor via a coupling. The drive motor is embedded in the outer wall of the drying chamber. Multiple rows of evenly distributed air outlets are located at the bottom of the flow-dividing cavity, with a first heating unit and a second heating unit correspondingly positioned below each outlet. The first heating unit is located in the central area of ​​the drying chamber, and the second heating units are located on either side of the drying chamber, both fixed to the inner wall of the drying chamber with bolts.

[0008] The tension adjustment assembly includes an adjusting roller, a slider, a guide rod, an elastic element, and a limiting block. Symmetrical grooves are formed on the inner walls of both sides of the drying chamber, within which sliders are slidably connected. An adjusting roller is rotatably connected to one outer wall of the slider via a bearing. A guide rod is fixed to the other outer wall of the slider, penetrating the side wall of the drying chamber and extending to the outside, with its outer end secured by a nut. An elastic element is sleeved on the outer wall of the guide rod, one end of which abuts against the outer wall of the slider, and the other end abuts against the inner wall of the limiting block. The limiting block is fixed to the outer wall of the drying chamber by welding.

[0009] The drying chamber has a feed inlet at its front end and a discharge outlet at its rear end, with the discharge outlet positioned higher than the feed inlet. Symmetrical support legs are fixed to the bottom outer wall of the drying chamber, with the bottom ends of the support legs bolted to the ground. A control panel is mounted on the top outer wall of the drying chamber, with knobs and a display screen distributed on one side of the control panel.

[0010] Both the first heating unit and the second heating unit include a heating tube, a heat sink, and a temperature sensor. The heating tube is fixed to the inner wall of the heat sink by a clip, and the temperature sensor is fixed to the outer wall of the heat sink. The signal line of the temperature sensor passes through the side wall of the drying chamber and is electrically connected to the control panel.

[0011] The elastic element is a compression spring, and there are four elastic elements in total, with two elastic elements on each side of each slider. The outer wall of the adjusting roller is covered with an anti-slip layer made of rubber material.

[0012] This invention employs a hot air distribution assembly. Hot air is introduced into the distribution chamber via a guide plate, and rotating blades evenly disperse the hot air, ensuring it is uniformly blown onto the surface of the paper product from multiple exhaust vents. The first and second heating units provide different heating intensities for the center and edge areas of the paper product, respectively, avoiding the problem of uneven hot air distribution in traditional equipment. Furthermore, the design of the distribution chamber, combined with the dynamic adjustment function of the rotating blades, enhances the penetration of the hot air, making it suitable for removing internal moisture from thick cardboard or multi-layered paper products.

[0013] This invention employs a tension adjustment component. During the paper product's operation, the adjusting roller changes position by sliding a slider within a groove, thereby dynamically adjusting the paper product's tension. The elastic force of the elastic element allows the adjusting roller to automatically adapt to the paper product's thickness, preventing paper warping or wrinkling caused by excessive or insufficient tension. Simultaneously, the anti-slip layer further enhances the stability of the paper product during operation, ensuring its flatness even at high temperatures.

[0014] This invention addresses the shortcomings of existing drying equipment in terms of hot air distribution, drying efficiency, and paper shape control through the synergistic effect of a hot air distribution component and a tension adjustment component. The hot air distribution component achieves uniform dispersion and efficient utilization of hot air, while the tension adjustment component ensures the flatness and stability of paper products during the drying process, thereby significantly improving drying effect and product quality. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Fig. 2 This is a front sectional view of the structure of this utility model.

[0017] Fig. 3 This is a top view of the sectional structure of this utility model.

[0018] The attached figures are labeled as follows: 1. Drying chamber; 2. Baffle plate; 3. Diverting chamber; 4. Rotating blades; 5. Drive motor; 6. First heating unit; 7. Second heating unit; 8. Adjusting roller; 9. Slider; 10. Guide rod; 11. Elastic element; 12. Limiting block; 13. Feed inlet; 14. Discharge outlet; 15. Control panel; 16. Heating tube; 17. Heat sink; 18. Temperature sensor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] Specific implementation examples are given below.

[0021] This utility model relates to a paper product drying mechanism, the specific embodiments of which are described in detail with reference to the accompanying drawings. Figs. 1 to 3 As shown, the drying mechanism includes a drying chamber 1, a hot air distribution assembly, and a tension adjustment assembly. The hot air distribution assembly is installed inside the drying chamber 1, and the tension adjustment assemblies are symmetrically arranged on the inner walls of both sides of the drying chamber 1. The specific structure of each component and its connection, position, and mutual cooperation are described in detail below with reference to the accompanying drawings.

[0022] The drying chamber 1 forms the main frame of the entire equipment. It has a feed inlet 13 at the front and a discharge outlet 14 at the rear, with the discharge outlet 14 positioned higher than the feed inlet 13, creating a slight inclination angle to ensure smooth conveying of paper products during operation. Symmetrical support feet are fixed to the bottom outer wall of the drying chamber 1, secured to the ground with bolts to ensure stability during operation. A control panel 15 is installed on the top outer wall of the drying chamber 1. Knobs and a display screen are distributed on one side of the control panel 15 for operating and monitoring the equipment's operating status.

[0023] The hot air distribution assembly is one of the core components of this invention. It includes a guide plate 2, a flow-dividing cavity 3, rotating blades 4, a drive motor 5, a first heating unit 6, and a second heating unit 7. The guide plate 2 is fixed to the top inner wall of the drying chamber 1 and has a stepped shape, with its bottom end connected to the inlet of the flow-dividing cavity 3. The design of the guide plate 2 allows hot air to flow smoothly into the flow-dividing cavity 3 along its surface, avoiding energy loss during transmission. The flow-dividing cavity 3 is a hollow structure with rotating blades 4 inside. The central axis of the rotating blades 4 penetrates one side wall of the flow-dividing cavity 3 and extends to the outside. The outer end of this central axis is fixedly connected to the output shaft of the drive motor 5 via a coupling. The drive motor 5 is embedded in the outer wall of the drying chamber 1 and drives the rotating blades 4 to rotate. The design of the rotating blades 4 allows the hot air entering the flow-dividing cavity 3 to be evenly dispersed under the action of the rotating blades 4, thereby improving the utilization efficiency of the hot air.

[0024] The bottom of the diversion chamber 3 has multiple rows of evenly distributed air outlets, with a first heating unit 6 and a second heating unit 7 respectively located below each row of air outlets. The first heating unit 6 is located in the central area of ​​the drying chamber 1, and the second heating unit 7 is located on both sides of the drying chamber 1. Both the first heating unit 6 and the second heating unit 7 are fixed to the inner wall of the drying chamber 1 by bolts. Fig. 3 As shown, the specific structure of the first heating unit 6 and the second heating unit 7 includes a heating tube 16, a heat sink 17, and a temperature sensor 18. The heating tube 16 is fixed to the inner wall of the heat sink 17 by a clip, and the temperature sensor 18 is fixed to the outer wall of the heat sink 17. The signal line of the temperature sensor 18 passes through the side wall of the drying chamber 1 and is electrically connected to the control panel 15. The temperature sensor 18 monitors the operating temperature of the first heating unit 6 and the second heating unit 7 in real time and feeds the data back to the control panel 15, thereby achieving precise control of the heating intensity.

[0025] The tension adjustment components are symmetrically arranged on the inner walls of both sides of the drying chamber 1, and their specific structure is as follows: Fig. 2 and Fig. 3 As shown. The tension adjustment assembly includes an adjusting roller 8, a slider 9, a guide rod 10, an elastic element 11, and a limiting block 12. Sliding grooves are symmetrically formed on the inner walls of both sides of the drying chamber 1. A slider 9 is slidably connected within these grooves. The adjusting roller 8 is rotatably connected to one outer wall of the slider 9 via a bearing. An anti-slip layer made of rubber is coated on the outer wall of the adjusting roller 8 to enhance the friction between the adjusting roller 8 and the paper product, thereby improving the stability of the paper product during operation. A guide rod 10 is fixed to the other outer wall of the slider 9. The guide rod 10 penetrates the side wall of the drying chamber 1 and extends to the outside, with its outer end locked by a nut. An elastic element 11 is sleeved on the outer wall of the guide rod 10. One end of the elastic element 11 abuts against the outer wall of the slider 9, and the other end abuts against the inner wall of the limiting block 12. The limiting block 12 is fixed to the outer wall of the drying chamber 1 by welding. The elastic element 11 is a compression spring, and there are four of them. Two elastic elements 11 are set on each side of each slider 9. The design of the elastic element 11 enables the adjusting roller 8 to automatically adapt to the thickness of the paper product, thereby realizing the dynamic adjustment of the tension of the paper product.

[0026] Paper products enter the drying chamber 1 through the feed inlet 13, and during operation, they pass sequentially through the hot air distribution assembly and the tension adjustment assembly. The working principle of the hot air distribution assembly is as follows: hot air enters the diversion chamber 3 through the guide plate 2, is evenly dispersed under the drive of the rotating blades 4, and is blown out from the multiple air outlets at the bottom of the diversion chamber 3. The first heating unit 6 and the second heating unit 7 provide different heating intensities for the middle and edge areas of the paper products, respectively, thereby solving the problem of uneven hot air distribution in traditional equipment. The design of the diversion chamber 3, combined with the dynamic adjustment function of the rotating blades 4, enhances the penetration of hot air, making it suitable for removing internal moisture from thick cardboard or multi-layer paper products.

[0027] The working principle of the tension adjustment component is as follows: During the operation of the paper product, the adjusting roller 8 changes position by sliding the slider 9 within the groove, thereby dynamically adjusting the tension of the paper product. The elastic force of the elastic element 11 allows the adjusting roller 8 to automatically adapt to the thickness of the paper product, avoiding paper warping or wrinkling caused by excessive or insufficient tension. Simultaneously, the anti-slip layer on the outer wall of the adjusting roller 8 further improves the stability of the paper product during operation, ensuring its flatness even in high-temperature environments.

[0028] In practical applications, the operator starts the equipment via control panel 15. Drive motor 5 rotates the blades 4, and hot air enters the distribution chamber 3 via guide plate 2, where it is evenly dispersed and blown onto the surface of the paper product. The first heating unit 6 and the second heating unit 7 adjust the heating intensity based on feedback data from temperature sensor 18, thereby achieving efficient drying of the paper product. Simultaneously, the tension adjustment assembly, through the elastic force of elastic element 11 and the automatic adaptation function of adjusting roller 8, ensures that the paper product maintains appropriate tension and stability throughout the operation. After drying, the paper product is output from discharge port 14, completing the entire drying process.

[0029] In the above embodiments, the synergistic effect of the hot air distribution component and the tension adjustment component solves the shortcomings of existing drying equipment in terms of hot air distribution, drying efficiency, and paper shape control. The hot air distribution component achieves uniform dispersion and efficient utilization of hot air, while the tension adjustment component ensures the flatness and stability of paper products during the drying process, thereby significantly improving the drying effect and product quality.

[0030] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0031] During the paper product processing, the operator first feeds the paper products to be dried into the drying chamber 1 through the feed inlet 13. After entering the drying chamber 1, the paper products run along an inclined conveyor path. This design ensures that the paper products move smoothly under gravity assistance, avoiding uneven drying caused by stagnation or accumulation. During the process, the paper products pass through the hot air distribution component and the tension adjustment component in sequence. The synergistic effect of the two components achieves efficient and uniform drying.

[0032] The working steps of the hot air distribution assembly are as follows: Hot air generated by the external heating equipment is guided to the distribution chamber 3 through the guide plate 2. The stepped design of the guide plate 2 effectively reduces energy loss of hot air during transmission, ensuring that the hot air can enter the distribution chamber 3 at a higher temperature. The rotating blades 4 inside the distribution chamber 3 are driven by the drive motor 5 to rotate. The design of the rotating blades 4 makes the hot air form a uniformly dispersed airflow in the distribution chamber 3. The multiple air outlets at the bottom of the distribution chamber 3 blow the dispersed hot air evenly onto the surface of the paper product. The first heating unit 6 and the second heating unit 7 provide different heating intensities for the central and side areas of the paper product, respectively. Specifically, the first heating unit 6 is located in the central area of ​​the drying chamber 1 and is mainly responsible for heating the central part of the paper product; the second heating unit 7 is distributed on both sides to solve the problem of insufficient or excessive drying in the edge areas in traditional equipment. The heating tube 16 efficiently transfers heat to the surface of the paper product through the heat sink 17, while the temperature sensor 18 monitors the working temperature of the heating unit in real time and feeds the data back to the control panel 15. The control panel 15 dynamically adjusts the power of the heating element 16 based on feedback data, thereby achieving precise control of the heating intensity. This design not only improves the utilization efficiency of hot air but also significantly enhances its penetrating power, making it particularly suitable for removing internal moisture from thick cardboard or multi-layered paper products.

[0033] Meanwhile, the tension adjustment assembly plays a crucial role in the operation of the paper products. After the paper products enter the drying chamber 1, they come into contact with the adjusting rollers 8 on both sides. The adjusting rollers 8 change position by sliding the slider 9 within the groove, thereby dynamically adjusting the tension of the paper products. The design of the elastic element 11 is the core of the tension adjustment assembly; its elastic force allows the adjusting rollers 8 to automatically adapt to the thickness of the paper products. When the paper products are thicker, the adjusting rollers 8 move outward under the elastic force of the elastic element 11, increasing the pressure on the paper products and thus avoiding wrinkles caused by insufficient tension; when the paper products are thinner, the adjusting rollers 8 move inward, reducing the pressure and preventing warping caused by excessive tension. In addition, the anti-slip layer on the outer wall of the adjusting rollers 8 is made of rubber material, further enhancing the friction between the adjusting rollers 8 and the paper products, ensuring that the paper products remain flat and operate stably in high-temperature environments.

[0034] In actual operation, the operator starts the equipment via control panel 15. Drive motor 5 rotates the blades 4, and hot air, after passing through guide plate 2 and entering the distribution chamber 3, is evenly dispersed and blown onto the surface of the paper product. The first heating unit 6 and the second heating unit 7 adjust the heating intensity based on feedback data from temperature sensor 18, thereby achieving efficient drying of the paper product. Simultaneously, the tension adjustment assembly, through the elastic force of elastic element 11 and the automatic adaptation function of adjusting roller 8, ensures that the paper product maintains appropriate tension and stability throughout the operation. After drying, the paper product is output from discharge port 14, completing the entire drying process.

[0035] In the above embodiments, the synergistic effect of the hot air distribution component and the tension adjustment component solves the shortcomings of existing drying equipment in terms of hot air distribution, drying efficiency, and paper shape control. The hot air distribution component achieves uniform dispersion and efficient utilization of hot air through the design of the guide plate 2, the flow distribution chamber 3, and the rotating blades 4, while the tension adjustment component ensures the flatness and stability of the paper products during the drying process through the design of the elastic element 11 and the adjusting roller 8. This design significantly improves the drying effect and product quality, meeting the needs of the modern paper processing industry for high-quality, intelligent drying equipment.

[0036] All content not described in detail in this specification is prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are prior art, and will not be described further here.

[0037] 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 paper product drying mechanism, characterized in that, The equipment includes a drying chamber (1), a hot air distribution assembly, and a tension adjustment assembly. The hot air distribution assembly is installed inside the drying chamber (1), and tension adjustment assemblies are symmetrically arranged on the inner walls of both sides of the drying chamber (1). The hot air distribution assembly includes a guide plate (2), a flow distribution cavity (3), a rotating blade (4), a drive motor (5), a first heating unit (6), and a second heating unit (7). The guide plate (2) is fixed to the top inner wall of the drying chamber (1), and the bottom end of the guide plate (2) is connected to the inlet of the flow distribution cavity (3). The flow distribution cavity (3) is a hollow structure, and a rotating blade (4) is provided inside it. The central axis of the rotating blade (4) passes through the flow distribution cavity. The flow cavity (3) extends to the outside of one side wall, and the outer end of the central shaft is fixedly connected to the output shaft of the drive motor (5) through a coupling. The drive motor (5) is embedded in the outer wall of the drying chamber (1). The bottom of the flow cavity (3) has multiple rows of evenly distributed air outlets. Below each air outlet, there are corresponding first heating unit (6) and second heating unit (7). The first heating unit (6) is located in the middle area of ​​the drying chamber (1), and the second heating unit (7) is located in the two side areas of the drying chamber (1). The first heating unit (6) and the second heating unit (7) are both fixed to the inner wall of the drying chamber (1) by bolts.

2. A paper product drying mechanism according to claim 1, wherein The tension adjustment assembly includes an adjustment roller (8), a slider (9), a guide rod (10), an elastic element (11), and a limiting block (12). The inner walls of both sides of the drying chamber (1) are symmetrically provided with sliding grooves. The slider (9) is slidably connected in the sliding groove. The adjustment roller (8) is rotatably connected to one side of the outer wall of the slider (9) through a bearing. The guide rod (10) is fixed to the other side of the outer wall of the slider (9). The guide rod (10) passes through the side wall of the drying chamber (1) and extends to the outside. The outer end of the guide rod (10) is locked and fixed by a nut. The elastic element (11) is sleeved on the outer wall of the guide rod (10). One end of the elastic element (11) abuts against the outer wall of the slider (9), and the other end abuts against the inner wall of the limiting block (12). The limiting block (12) is fixed to the outer wall of the drying chamber (1) by welding.

3. A paper product drying mechanism according to claim 1, wherein The front end of the drying chamber (1) is provided with a feed inlet (13), and the rear end of the drying chamber (1) is provided with a discharge outlet (14), and the position of the discharge outlet (14) is higher than that of the feed inlet (13).

4. A paper product drying mechanism according to claim 1, wherein The first heating unit (6) and the second heating unit (7) both include a heating tube (16), a heat sink (17) and a temperature sensor (18). The heating tube (16) is fixed to the inner wall of the heat sink (17) by a snap fastener. The temperature sensor (18) is fixed to the outer wall of the heat sink (17). The signal line of the temperature sensor (18) passes through the side wall of the drying chamber (1) and is electrically connected to the control panel (15).

5. A paper product drying mechanism according to claim 1, wherein The elastic element (11) is a compression spring, and there are four elastic elements (11), with two elastic elements (11) on each side of each slider (9).

6. A paper product drying mechanism according to claim 2, wherein The outer wall of the adjusting roller (8) is covered with an anti-slip layer, which is made of rubber material.

7. A paper product drying mechanism according to claim 1 wherein, The bottom outer wall of the drying chamber (1) is symmetrically fixed with support feet, and the bottom end of the support feet is fixed to the ground by bolts.

8. A paper product drying mechanism according to claim 1 wherein, A control panel (15) is installed on the top outer wall of the drying chamber (1), and knobs and a display screen are distributed on one side of the outer wall of the control panel (15).

9. A paper product drying mechanism according to claim 1 wherein, The guide plate (2) is stepped.

10. A paper product drying mechanism according to claim 1, wherein The number of multiple air vents opened at the bottom of the diversion cavity (3) is two or more.

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