Paper drying device

Abstract

The utility model relates to the technical field of paper drying equipment, in particular to a paper drying device. Comprising a machine box and an air supply pipe, four temperature control areas are sequentially arranged in the machine box, the temperature control areas are arranged at intervals and form a backflow channel for airflow to pass through, surrounding walls are arranged outside the four temperature control areas, backflow layers are formed between the surrounding walls and the temperature control areas and communicated with the backflow channel, and the air supply pipe is communicated with the air supply pipe. Conveying rollers are symmetrically arranged on the two sides of the middle of the temperature control area, and air supply pipes are symmetrically arranged on the upper portion and the lower portion in the temperature control area respectively; the inside of the case is divided into a plurality of temperature areas, and a drying mode that the temperature rises step by step is adopted, so that the paper quality is improved, and the production efficiency is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of paper drying equipment, and in particular to a paper drying device. Background Technology

[0002] Paper, as an important carrier of information recording and packaging materials, is widely used in all walks of life. Currently, in paper production, after the formed base paper is pressed and dehydrated, it needs to be dried to meet the specified moisture requirements. However, existing drying methods usually use the same temperature range to dry the paper, which can easily lead to excessively high temperatures, causing the paper surface to dry rapidly and form a hard shell, hindering the evaporation of internal moisture, thus causing internal stress and paper embrittlement. On the other hand, excessively high temperatures will greatly reduce production efficiency and are not conducive to processing. Furthermore, traditional unidirectional air supply cannot achieve uniform drying of paper moisture. Therefore, there is an urgent need for a stable paper drying device. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a paper drying device that addresses the above-mentioned technical deficiencies by dividing the interior of the machine into multiple temperature zones and adopting a drying method with progressively increasing temperatures, thereby improving paper quality and ensuring production efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model includes: a chassis and an air supply pipe. The chassis has four temperature control zones arranged in sequence, and the temperature control zones are arranged at intervals to form a return channel through which the air supply air passes. The four temperature control zones are surrounded by a surrounding wall, and the surrounding wall and the temperature control zones form a return layer and are connected to the return channel. The temperature control zones are provided with symmetrically arranged conveyor rollers on both sides of the middle part. The temperature control zones are provided with air supply pipes symmetrically arranged at the upper and lower positions.

[0005] Preferably, ring baffles are provided on both sides of the middle part of the temperature control zone.

[0006] Preferably, sealing strips are provided on the ring baffle at the inlet and outlet of the chassis.

[0007] Preferably, two exhaust pipes communicating with the outside are symmetrically arranged on the upper and lower sides of the surrounding wall.

[0008] Preferably, partitions are symmetrically arranged above and below the temperature control zone.

[0009] Preferably, the upper partition and the temperature control zone form an air outlet chamber, and multiple through holes communicating with the outside are provided on both sides of the air outlet chamber.

[0010] Preferably, the through hole is provided with an air volume regulating component.

[0011] Preferably, the airflow regulating component includes a power component and a sliding plate; the power component is installed at the rear of the chassis; the sliding plate has a mating hole corresponding to the position of the through hole, and the sliding plate is slidably connected to the through hole and connected to the power component.

[0012] Preferably, the air supply pipe is provided with a plurality of rectangular air outlet holes evenly distributed on it.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. The internal temperature control zone of the machine can be divided into multiple temperature ranges. After the paper enters, the temperature gradually increases, avoiding the embrittlement caused by high temperature and solving the problem of reduced processing efficiency caused by excessively low temperature in traditional methods. It is stable and reliable in use.

[0015] 2. The design of the recirculation layer allows some airflow to be discharged from the conveyor roller, thus achieving the function of assisting in the discharge of airflow. Furthermore, when warm air passes through the recirculation layer, it can form a certain heat insulation layer, improving the temperature stability within the temperature control zone.

[0016] 3. The design of the air outlet chamber above the temperature control zone can quickly discharge the evaporated water vapor. At the same time, in conjunction with the control of the air volume adjustment component, the channel can be opened and closed, and the exhaust volume can be adjusted, which is convenient for flexible operation according to the internal conditions.

[0017] 4. The air supply ducts are arranged in pairs. Within the same temperature control zone, they can be blown in opposite directions to ensure that the top and bottom sides of the paper are dried at the same time, avoiding different humidity levels on the two sides. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of the chassis with the front cover open.

[0019] Figure 2 This is a magnified view of a portion of the material outlet of the chassis;

[0020] Figure 3 This is a schematic diagram of the internal structure of the temperature control zone;

[0021] Figure 4 This is a schematic diagram of the air supply duct structure;

[0022] Figure 5 This is a schematic diagram of the structure surrounding the wall;

[0023] Figure 6 This is a schematic diagram of the rear structure of the chassis;

[0024] Figure 7 This is a schematic diagram of a skateboard structure.

[0025] In the diagram: 1. Chassis; 2. Air supply duct; 3. Temperature control zone; 4. Circulating wall; 5. Return flow layer; 6. Air volume regulating component; 201. Air outlet; 301. Return flow channel; 302. Conveyor roller; 303. Ring baffle; 304. Sealing strip; 305. Partition; 306. Air outlet chamber; 307. Through hole; 401. Exhaust pipe; 601. Power component; 602. Slide plate; 603. Connecting hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0027] Specific implementation method one: Combining Figure 1-7 As shown, a paper drying device includes: a housing 1 and an air supply pipe 2. Four temperature control zones 3 are arranged sequentially inside the housing 1, and the temperature control zones 3 are arranged at intervals to form a return channel 301 through which the air supply air passes. A surrounding wall 4 is provided outside the four temperature control zones 3 to surround and cover the four temperature control zones 3. A return layer 5 is formed between the surrounding wall 4 and the temperature control zones 3 and is connected to the return channel 301. Conveyor rollers 302 are symmetrically arranged on both sides of the middle part of the temperature control zone 3. The conveyor rollers 302 are connected to air supply pipes 2 symmetrically arranged at the upper and lower positions inside the temperature control zone 3. The air supply pipes 2 are connected to an air supply device to provide hot air at an appropriate temperature. The temperature of each temperature control zone 3 is controlled independently, thereby forming temperature control zones with different temperatures.

[0028] Preferred embodiments, in combination Figure 2 As shown, during the air supply duct 2 to dry the paper, the airflow blowing towards the paper will be split to both sides along the paper. By setting the ring baffles 303 on both sides of the middle of the temperature control zone 3, the amount of airflow can be reduced, thereby ensuring that the temperature of the temperature control zone 3 is relatively stable, and at the same time, it does not affect the normal exhaust.

[0029] Preferred embodiments, in combination Figure 2 As shown, at the inlet and outlet of the casing 1, sealing strips 304 are provided on the ring baffle 303, which can help seal the return layer 5, reduce the external airflow entering the return layer 5, and affect the heat preservation function.

[0030] Preferred embodiments, in combination Figure 5As shown, two exhaust pipes 401 connected to the outside are symmetrically arranged on the upper and lower sides of the surrounding wall 4. Solenoid valves can be installed on the exhaust pipes 401 for easy control of opening and closing. Part of the airflow enters the return layer 5 through the return channel 301 and is discharged through the exhaust pipes 401 to achieve internal exhaust. The return layer 5 also forms a certain heat insulation layer effect.

[0031] Preferred embodiments, in combination Figure 3 As shown, partitions 305 are symmetrically arranged above and below the temperature control zone 3, which can reduce the internal area and facilitate the rapid increase of the initial temperature in the zone.

[0032] Preferred embodiments, in combination Figure 3 As shown, the upper partition 305 and the temperature control zone 3 form an air outlet 306. The upper partition 305 has notches at the front and rear for communication with the temperature control zone 3. The air outlet 306 has multiple through holes 307 on both sides for communication with the outside. The through holes 307 have a rectangular structure and are connected to a negative pressure adsorption device, which can quickly extract moisture from the area above the temperature control zone 3.

[0033] Preferred embodiments, in combination Figure 3 As shown, depending on different production needs, the through holes 307 often do not need to be opened simultaneously. In this regard, the opening area of ​​the through holes 307 can be controlled by providing an air volume regulating component 6 at the through holes 307, thereby adjusting the exhaust volume.

[0034] Preferred embodiments, in combination Figure 3 , Figure 6 and Figure 7 As shown, the airflow regulating component 6 includes a power component 601 and a sliding plate 602. The power component 601 is installed at the rear of the chassis 1 and uses a hydraulic cylinder or an electric push rod. The sliding plate 602 has a docking hole 603 corresponding to the position of the through hole 307, and the sliding plate 602 is slidably connected to the through hole 307 and connected to the power component 601. By extending and retracting the power component 601, the sliding plate 602 is moved. The ventilation area can be adjusted by utilizing the misalignment between the docking hole 603 and the through hole 307. A horizontal plate is fixed on the push rod of the power component 601. There are intermediate rods on both sides of the horizontal plate that penetrate the rear wall of the chassis 1. The intermediate rods are fixedly connected to the sliding plate 602, which can realize the synchronous operation of the two sliding plates 602. The airflow regulating component 6 is arranged in each temperature control zone 3 to realize zone control.

[0035] Preferred embodiments, in combination Figure 4 As shown, the air supply pipe 2 is provided with multiple rectangular air outlets 201 evenly, which can ensure that the airflow is blown evenly onto the paper surface and achieves a complete coverage effect; the air outlet 201 can also be a completely connected rectangular hole to form a wind wall blowing onto the paper, which can also meet the requirements.

[0036] Combination Figure 3 As shown, a groove structure is provided at the through hole 307, and the slide plate 602 forms a sliding connection with the groove, which can improve the stability during the displacement process.

[0037] Experimental Example: The four temperature control zones 3 correspond to the following: Pre-drying zone, used to quickly remove most of the moisture from the paper surface and prevent premature hardening of the paper surface, with a temperature range of 60℃-80℃; this helps to gently initiate the evaporation process and avoids the rapid formation of a hard shell on the paper surface due to initial high temperature, which would hinder further evaporation of internal moisture; Main drying zone, used to continue removing a large amount of moisture and gradually increase the drying intensity, with a temperature range of 80℃-100℃; this gradually increases the temperature to accelerate the evaporation rate of moisture while maintaining a gentle treatment of the paper structure to prevent excessive shrinkage or deformation; Main drying zone, used to further enhance the drying effect and ensure that the paper reaches a state close to its final moisture content, with a temperature range of 100℃-120℃; the paper has undergone preliminary drying and can withstand higher temperatures to more effectively remove remaining moisture; Post-treatment zone, used to fine-tune the paper moisture content to a precise level, improve the paper's smoothness and gloss, with a temperature range of 60℃-80℃; this stabilizes the paper moisture content, prevents brittleness caused by over-drying, and creates favorable conditions for subsequent calendering.

[0038] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A paper drying apparatus, characterized in that, include: The chassis (1) and the air supply pipe (2) are arranged in sequence inside the chassis (1), and the temperature control zones (3) are arranged at intervals to form a return channel (301) through which the air supply passes. The four temperature control zones (3) are surrounded by a surrounding wall (4). The surrounding wall (4) and the temperature control zones (3) form a return layer (5) and are connected to the return channel (301). The temperature control zones (3) are provided with symmetrically arranged conveyor rollers (302) on both sides of the middle part. The air supply pipes (2) are symmetrically arranged at the upper and lower positions of the temperature control zones (3).

2. The paper drying apparatus according to claim 1, characterized in that: The temperature control zone (3) is provided with ring baffles (303) on both sides of the middle part.

3. The paper drying apparatus according to claim 2, characterized in that: At the inlet and outlet of the casing (1), sealing strips (304) are provided on the ring baffle (303).

4. The paper drying apparatus according to claim 1, characterized in that: Two exhaust pipes (401) communicating with the outside are symmetrically arranged on the upper and lower sides of the surrounding wall (4).

5. A paper drying apparatus according to claim 1, characterized in that: The temperature control zone (3) is symmetrically arranged with partitions (305) above and below it.

6. A paper drying apparatus according to claim 5, characterized in that: The partition (305) located above forms an air outlet cavity (306) with the temperature control zone (3), and multiple through holes (307) communicating with the outside are provided on both sides of the air outlet cavity (306).

7. A paper drying apparatus according to claim 6, characterized in that: An air volume regulating component (6) is provided at the through hole (307).

8. A paper drying apparatus according to claim 7, characterized in that: The air volume regulating component (6) includes a power component (601) and a sliding plate (602); the power component (601) is installed at the rear of the chassis (1); the sliding plate (602) is provided with a docking hole (603) corresponding to the position of the through hole (307), and the sliding plate (602) is slidably connected to the through hole (307) and connected to the power component (601).

9. A paper drying apparatus according to claim 1, characterized in that: The air supply pipe (2) is provided with a plurality of rectangular air outlet holes (201) evenly distributed on it.

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