A drying apparatus for impregnated paper processing
By stacking the drying ovens and utilizing hot air circulation, the problems of large footprint and high energy consumption in impregnated paper processing equipment have been solved, and the recovery of impregnating agent and efficient utilization of heat energy have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YINCHUAN SICHENG PAPER IND CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-07-31
AI Technical Summary
Existing drying equipment for impregnated paper processing has a complex structure, occupies a large space, consumes a lot of energy, and requires two impregnation and drying processes, resulting in high costs.
Two sets of drying ovens are arranged in a stacked manner. The structure of the hot air circulation and recovery box between the ovens realizes the utilization of waste heat and reduces energy consumption. The hot airflow is circulated through the fan and connecting pipes to reduce the space occupied by the equipment.
It effectively reduced equipment energy consumption, reduced the space occupied by the production line, and enabled the recovery of impregnating agent, thereby improving the utilization rate of thermal energy.
Smart Images
Figure CN224578549U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of impregnated paper processing technology, and in particular to an impregnated paper processing drying device. Background Technology
[0002] Impregnated paper is a composite material made from non-woven wood pulp, PE and plant fibers, impregnated with melamine glue or phenolic resin. It is characterized by strong absorption, good resistance to dissolution and low particle detachment rate. It is mainly used as a decorative layer in cabinets, wardrobes, laminate flooring and building formwork, and its application is very wide. In its production process, the impregnated paper needs to be dried.
[0003] Existing drying equipment for impregnated paper processing has the following drawbacks: the paper strip immediately enters the second coating and drying process after the first impregnation and drying. The first back coating and impregnation can use urea-formaldehyde resin, which is inexpensive but has relatively poor performance. After drying, melamine resin is coated a second time, which saves costs and ensures the surface quality of the impregnated paper. However, since the paper strip needs to undergo two impregnation and drying processes, an impregnation coating and drying production line is usually used for processing. This equipment has many structures, occupies a large space, and consumes a lot of energy. Therefore, we propose an impregnated paper processing drying device. Utility Model Content
[0004] The main purpose of this utility model is to provide a drying device for impregnated paper processing, which improves the existing impregnation and drying production line by arranging two sets of drying ovens in a stacked manner, and connecting the hot air exhaust end between the two sets of drying ovens to the feed end of the other set of drying ovens, thereby maximizing the utilization of waste heat, reducing energy consumption, and effectively solving the problems in the background technology.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A drying apparatus for impregnated paper processing includes an impregnation tank A and an impregnation tank B. An oven A is disposed between the impregnation tanks A and B, with the top of the oven A overlapping the top of the oven B. A drying mechanism is disposed between the interiors of the ovens A and B. The drying mechanism includes a heating pipe, a heat exhaust pipe, a fan A, a connecting pipe A, a fan B, and a connecting pipe B. Both ovens A and B have heating pipes on their sides connected to external heating equipment, and the ends of the heating pipes are connected to the heat exhaust pipes arranged side-by-side inside the ovens. A fan A is installed at the discharge end of oven A. The discharge end of oven A and the feed end of oven B are vertically connected via a connecting pipe A, with the bottom end of the connecting pipe A corresponding to the air outlet end of the fan A. A fan B is installed at the discharge end of oven B, and the discharge end of oven B and the feed end of oven A are vertically connected via a connecting pipe B, with the top end of the connecting pipe B corresponding to the air outlet end of the fan B.
[0007] Furthermore, a recycling box is horizontally welded at the side connection between the discharge end of oven A and the feed end of oven B. Inclined plates are laid on both sides of the bottom of the recycling box's inner wall, and a discharge groove is opened at the side position where the bottom ends of the inclined plates connect. Return pipes connected to the discharge groove are welded to both sides of the bottom of the recycling box, and the bottom ends of the return pipes extend into the impregnation tank B. A recycling box structure is provided between the discharge end of oven A and the feed end of oven B. The paper tape discharged from oven A is impregnated inside the impregnation tank B and then conveyed to the inside of oven B by conveying rollers and guide rollers. During the conveying process, the impregnating agent dripping from the surface of the paper tape drips into the recycling box, then slides down the inclined plates inside the recycling box, and finally enters the return pipe from the discharge groove position, flowing back into the impregnation tank B, thus realizing the recovery of the impregnating agent. Simultaneously, the paper tape discharged from oven A passes through the bottom of the recycling box, preventing the impregnating agent from dripping onto the surface.
[0008] Furthermore, both the inlet and outlet ends of the ovens A and B are equipped with conveying rollers, and the top side of the impregnation tank B is equipped with a guide roller for guiding the impregnated paper. Both the conveying rollers and the guide rollers are connected to an external power assembly, which plays a guiding role in the conveying of the paper strip.
[0009] Furthermore, guide plates are welded to both the upper and lower sides of the feeding end inside oven A and the feeding end inside oven B. The ends of the guide plates are inclined towards the drying area inside the oven. The guide plates are located between the feeding position and the drying area inside the oven, and the connecting ends are inclined towards the drying area, which can reduce the exhaust of hot air from the drying area during operation.
[0010] Furthermore, exhaust pipes are welded to the side of oven A near the feed end and the top of oven B near the feed end. The exhaust pipes are connected to external extraction equipment at their discharge ends. The exhaust pipes are connected to external extraction equipment through the connecting pipes to extract the airflow after use inside ovens A and B.
[0011] Furthermore, each exhaust pipe is equipped with a baffle plate inside, and a water collection cover is welded to the bottom of each baffle plate. The side end of the water collection cover is welded to the inner wall of the exhaust pipe. The baffle plate is used to separate water and air in the exhaust airflow to reduce the water content of the exhaust airflow. After the water and air condense on the surface of the baffle plate, they will slide down to the water collection cover and be discharged along the drainage pipe.
[0012] Compared with the prior art, this utility model has the following beneficial effects: Impregnation tank A and impregnation tank B are respectively used to dispense impregnating liquids for two applications. The paper strip, under the action of the conveying assembly and conveying rollers, is impregnated inside the impregnation tank and then discharged into oven A. After initial drying, it enters impregnation tank B for secondary impregnation, and finally undergoes secondary drying in oven B. Oven B is located at the top of oven A. The paper strip, after secondary impregnation in impregnation tank B, enters oven B under the action of guide rollers. Hot airflow provided by external heating equipment is conveyed through heating pipes and blown out through exhaust pipes to dry the paper strip. Fans A and B are respectively installed at the discharge ends of oven A and oven B. Fan A cools the paper strip during operation and simultaneously blows the hot airflow from oven A into the feed end of oven B through connecting pipe A. Fan B dries the paper strip inside oven B. The hot airflow from the main unit is blown into the feed end of oven A through connecting pipe B. The stacked arrangement greatly reduces the space occupied by the production line. At the same time, the hot airflow after drying inside the oven is used to preheat and pre-dry the paper tape at the feed end of another set of ovens, further improving the thermal energy utilization rate and reducing the overall energy consumption of the equipment. A recycling box structure is set between the discharge end of oven A and the feed end of oven B. The paper tape discharged from oven A is impregnated inside the impregnation box B and then conveyed into oven B by conveying rollers and guide rollers. During the conveying process, the impregnating agent dripping from the surface of the paper tape will drip into the recycling box, then slide down the inclined plate inside the recycling box and finally enter the return pipe from the discharge slot, flowing back into the impregnation box B, realizing the recycling of the impregnating agent. At the same time, the paper tape discharged from oven A passes through the bottom of the recycling box, which can prevent the impregnating agent from dripping onto the surface. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of an impregnated paper processing and drying device according to the present invention.
[0014] Figure 2 This is a schematic diagram of the internal structure of ovens A and B in a drying device for impregnated paper processing according to this utility model.
[0015] Figure 3 This is a schematic diagram of the internal structure of the exhaust pipe of the impregnated paper processing and drying device of this utility model.
[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the middle position of the recycling box in the impregnated paper processing and drying device of this utility model.
[0017] In the diagram: 1. Impregnation tank A; 2. Impregnation tank B; 3. Drying oven A; 4. Drying oven B; 5. Drying mechanism; 501. Conveying roller; 502. Guide roller; 503. Heating pipe; 504. Exhaust pipe; 505. Fan A; 506. Connecting pipe A; 507. Fan B; 508. Connecting pipe B; 509. Baffle plate; 510. Exhaust pipe; 511. Connecting pipe; 512. Baffle plate; 513. Water collection cover; 6. Recovery tank; 601. Inclined plate; 602. Discharge trough; 603. Return pipe. Detailed Implementation
[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0019] like Figure 1-4 As shown, a drying apparatus for impregnated paper processing includes an impregnation tank A1 and an impregnation tank B2. An oven A3 is disposed between the impregnation tanks A1 and B2, and an oven B4 overlaps the top of the oven A3. A drying mechanism 5 is disposed between the interiors of the ovens A3 and B4. The drying mechanism 5 includes a heating pipe 503, a heat exhaust pipe 504, a fan A505, a connecting pipe A506, a fan B507, and a connecting pipe B508. Both the ovens A3 and B4 have heating pipes 503 on their sides that connect to external heating equipment for heating. The end of pipe 503 is connected to heat exhaust pipe 504 arranged side by side inside the oven. A fan A505 is installed at the discharge end of the oven A3. The discharge end of the oven A3 and the feed end of the oven B4 are vertically connected by a connecting pipe A506, and the bottom end of the connecting pipe A506 corresponds to the air outlet end of the fan A505. A fan B507 is installed at the discharge end of the oven B4. The discharge end of the oven B4 and the feed end of the oven A3 are vertically connected by a connecting pipe B508, and the top end of the connecting pipe B508 corresponds to the air outlet end of the fan B507.
[0020] A recovery box 6 is horizontally welded to the side connection between the discharge end of oven A3 and the feed end of oven B4. Inclined plates 601 are laid on both sides of the bottom of the inner wall of the recovery box 6, and a discharge groove 602 is opened on the side of the connection between the bottom ends of the inclined plates 601. Return pipes 603, communicating with the inside of the discharge grooves 602, are welded to both sides of the bottom of the recovery box 6, and the bottom ends of the return pipes 603 extend into the interior of the impregnation tank B2. The recovery box 6 structure is provided between the discharge end of oven A3 and the feed end of oven B4. The paper tape discharged from the interior of oven A3 is impregnated inside the impregnation box B2 and then conveyed to the interior of oven B4 by conveying rollers 501 and guide rollers 502. During the conveying process, the impregnating agent dripping from the surface of the paper tape will drip into the recycling box 6, and then slide down the inclined plate 601 inside the recycling box 6 and finally enter the return pipe 603 from the discharge slot 602 position, flowing back into the impregnation box B2 to realize the recycling of the impregnating agent. At the same time, the paper tape discharged from oven A3 passes through the bottom of the recycling box 6, which can prevent the impregnating agent from dripping onto the surface.
[0021] The ovens A3 and B4 are equipped with conveyor rollers 501 at their inlet and outlet ends. The impregnation tank B2 is equipped with a guide roller 502 on its side top to guide the impregnated paper. The feed inlet of oven A3 and the feed inlet of oven B4 are welded to the upper and lower sides, and the ends of the guide rollers 509 are inclined toward the drying area inside the oven. The conveyor rollers 501 and the guide rollers 502 are connected to the external power assembly and play a guiding role in the conveying of the paper strip. The guide rollers 509 are located between the feed inlet and the drying area inside the oven, and the connecting ends are inclined toward the drying area, which can reduce the exhaust of hot air from the drying area during operation.
[0022] The oven A3 and oven B4 are equipped with exhaust pipes 510 welded to the side near the feed end and the top near the feed end, respectively. The exhaust pipes 510 are connected to external exhaust equipment via connecting pipes 511 at their discharge ends. Each exhaust pipe 510 has a baffle plate 512 inside, and a water collection hood 513 is welded to the bottom of each baffle plate 512. The side end of the water collection hood 513 is welded to the inner wall of the exhaust pipe 510. The exhaust pipes 510 are connected to external exhaust equipment via connecting pipes 511 to extract the used airflow from ovens A3 and B4. The baffle plate 512 is used to separate water and air in the exhaust airflow to reduce the water content of the exhaust airflow. After the water vapor condenses on the surface of the baffle plate 512, it slides down to the water collection hood 513 and is discharged along the drainage pipe.
[0023] It should be noted that this utility model is a drying device for impregnated paper processing. In use, impregnation tanks A1 and B2 are used to dispense the impregnating solution required for two separate applications. The paper strip, under the action of the conveying assembly and conveyor roller 501, is impregnated inside the impregnation tanks and then discharged into the drying oven A3. After initial drying, it re-enters impregnation tank B2 for a second impregnation. Finally, it undergoes a second drying process in drying oven B4, which is located at the top of drying oven A3. The paper strip, which has undergone secondary impregnation in box B2, enters the oven B4 under the action of guide roller 502. Hot air supplied by external heating equipment is conveyed through heating pipe 503 and blown out by exhaust pipe 504 to dry the paper strip. Fans A505 and B507 are respectively installed at the discharge ends of ovens A3 and B4. Fan A505 cools the paper strip during operation and simultaneously blows the hot air from inside oven A3 into the feed end of oven B4 through connecting pipe A506. Fan B507... In operation 07, the hot airflow inside oven B4 is blown into the feed end of oven A3 through connecting pipe B508. The stacked arrangement significantly reduces the space occupied on the production line. Simultaneously, the hot airflow after drying inside the ovens is used to preheat and pre-dry the paper tape at the feed end of another set of ovens, further improving heat utilization and reducing overall equipment energy consumption. A recovery box 6 is installed between the discharge end of oven A3 and the feed end of oven B4 to collect the paper tape discharged from oven A3. After being impregnated inside the impregnation box B2, the paper tape is conveyed to the oven B4 by the conveyor roller 501 and guide roller 502. During the conveying process, the impregnating agent dripping from the surface of the paper tape will drip into the recycling box 6, and then slide down the inclined plate 601 inside the recycling box 6 and finally enter the return pipe 603 from the discharge slot 602, flowing back into the impregnation box B2, thus realizing the recycling of the impregnating agent. At the same time, the paper tape discharged from the oven A3 passes through the bottom of the recycling box 6, which can prevent the impregnating agent from dripping onto the surface.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A drying apparatus for impregnated paper processing, comprising an impregnation tank A (1), characterized in that, It also includes an impregnation tank B (2), an oven A (3) is provided between the impregnation tank A (1) and the impregnation tank B (2), and an oven B (4) is connected to the top of the oven A (3). A drying mechanism (5) is provided between the oven A (3) and the oven B (4). The drying mechanism (5) includes a heating pipe (503), a heat exhaust pipe (504), a fan A (505), a connecting pipe A (506), a fan B (507), and a connecting pipe B (508). The sides of the oven A (3) and the oven B (4) are provided with heating pipes (503) that are connected to external heating equipment, and the ends of the heating pipes (503) are connected to the external heating equipment. The heat exhaust pipes (504) arranged side by side inside the oven are connected. A fan A (505) is installed at the discharge end of the oven A (3). The discharge end of the oven A (3) and the feed end of the oven B (4) are vertically connected by a connecting pipe A (506), and the bottom end of the connecting pipe A (506) corresponds to the air outlet end of the fan A (505). A fan B (507) is installed at the discharge end of the oven B (4). The discharge end of the oven B (4) and the feed end of the oven A (3) are vertically connected by a connecting pipe B (508), and the top end of the connecting pipe B (508) corresponds to the air outlet end of the fan B (507).
2. The drying apparatus for impregnated paper processing according to claim 1, characterized in that: A recycling box (6) is horizontally welded at the side connection between the discharge end of oven A (3) and the feed end of oven B (4). Inclined plates (601) are laid on both sides of the bottom of the inner wall of the recycling box (6), and a discharge groove (602) is opened at the side position of the connection between the bottom ends of the inclined plates (601). A return pipe (603) connected to the inside of the discharge groove (602) is welded on both sides of the bottom of the recycling box (6), and the bottom end of the return pipe (603) extends into the inside of the impregnation box B (2).
3. The drying apparatus for impregnated paper processing according to claim 1, characterized in that: Both oven A (3) and oven B (4) are equipped with conveying rollers (501) at their inlet and outlet ends, and the impregnation box B (2) is equipped with a guide roller (502) on its side top to guide the impregnation paper.
4. The drying apparatus for impregnated paper processing according to claim 1, characterized in that: The feed inlet of oven A (3) and the feed inlet of oven B (4) are both equipped with guide plates (509) on the upper and lower sides. The ends of the guide plates (509) are inclined toward the drying area inside the oven.
5. The drying apparatus for impregnated paper processing according to claim 1, characterized in that: The oven A (3) near the feed end side and the oven B (4) near the feed end top are both equipped with exhaust pipes (510), and the exhaust pipes (510) are all equipped with connecting pipes (511) that are connected to external exhaust equipment at the discharge end.
6. The drying apparatus for impregnated paper processing according to claim 5, characterized in that: Each exhaust pipe (510) is equipped with a baffle plate (512) and a water collection cover (513) is welded to the bottom of each baffle plate (512). The side end of the water collection cover (513) is welded to the inner wall of the exhaust pipe (510).