Kraft paper drying device

Abstract

The utility model relates to the technical field of kraft paper drying, and provides a kraft paper drying device which comprises a drying bin, a partition plate, a plurality of feeding rollers and a plurality of air supply pipes. The feeding roller is rotationally arranged on the drying bin; the air supply pipe is fixedly arranged in the partition plate in a rotatable mode, an air inlet and an air blowing opening are formed in the peripheral side of the air supply pipe, and the feeding cavity is communicated with the air blowing opening, the feeding opening, the discharging opening and the exhaust opening. According to the kraft paper drying device, the hot air opening and the exhaust opening are formed and communicated with hot air circulating equipment, so that kraft paper can be dried through hot air, the direction of the air blowing opening can be adjusted by arranging the rotatable air supply pipe on the partition plate, and the problem that the flowing directions of multiple strands of hot air interfere with one another is solved; and therefore, hot air and steam can be quickly discharged, and the drying efficiency of the drying device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kraft paper drying, in particular to a kraft paper drying device. Background Art

[0002] Drying is an important process in the kraft paper production process. Using a drying device to heat and evaporate the moisture in the kraft paper helps to further reduce the porosity of the kraft paper and increase the density and hardness of the kraft paper, thereby improving the quality of the finished paper.

[0003] The utility model with patent publication number CN210070495U discloses a drying device for kraft paper self-adhesive film, including a box body and an electric heating wire, wherein the inner sides of the left and right side walls of the box body are slidably connected with a vertically arranged telescopic plate, the top of the telescopic plate located at the bottom end and the inner side of the bottom end of the telescopic plate located at the top end are rotatably connected with guide rollers, the other end of the telescopic plate is fixedly connected with a compression spring, and the other end of the compression spring is fixedly connected to the box body, and the inner side of the top surface of the box body is slidably connected with a mounting plate. In the utility model, through the set fixed tube, electric heating wire, mounting plate and drying plate, on the one hand, the heat generated by the electric heating wire is used to dry the kraft paper self-adhesive film, and the vent hole at the top of the fixed tube can play a role of directional heat dissipation, and at the same time, the rubber powder polystyrene particle insulation layer can reduce heat loss, and on the other hand, the setting of the mounting plate and the drying plate can reduce the moisture in the device to improve the drying effect of the device.

[0004] In the above technical solution, in order to directionally heat the paper, a fixed tube is set up, and a vent is opened on the top of the fixed tube. However, the flow rate of the hot air flow generated by the heating of the electric heating wire is relatively slow, and the kraft paper to be dried is usually arranged in a horizontal direction. After the hot air flow contacts the kraft paper, it will flow in a divergent manner on the bottom plane of the kraft paper, resulting in the problem that the flow directions of multiple hot air flows in multiple vents will interfere with each other, so that the hot air flow and steam in the drying device cannot be discharged quickly, which is not conducive to improving the drying efficiency of the drying device. Utility Model Content

[0005] In view of this, the utility model proposes a kraft paper drying device, which can quickly discharge hot air and steam and improve the drying efficiency of the drying device.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a kraft paper drying device, including a drying bin, a partition, a plurality of feeding rollers and a plurality of air supply pipes, wherein:

[0007] The drying bin is provided with a feed inlet, a discharge outlet, a hot air outlet and an exhaust outlet;

[0008] The partition is sealed and fixed in the drying chamber, and divides the interior of the drying chamber into an air source chamber and a feeding chamber;

[0009] The feeding roller is rotatably arranged on the drying bin and is located in the feeding cavity;

[0010] The air supply pipe is fixedly arranged in the partition in a rotatable manner, and its rotation axis is parallel to the horizontal plane. An air inlet and an air blowing port are opened on the circumferential side of the air supply pipe. The air inlet and the air blowing port are connected, and the wind source cavity is connected to the air inlet and the hot air port, and the feeding cavity is connected to the air blowing port, the feed port, the discharge port and the exhaust port.

[0011] On the basis of the above technical solution, preferably, the air supply pipe is a hollow circular tube structure with both ends blocked;

[0012] The air inlet is a long strip hole-shaped structure, the air blowing port is a circular hole-shaped structure, and each of the air supply pipes is provided with a plurality of the air blowing ports along its axial direction.

[0013] More preferably, the partition plate and the air supply pipe are both arranged in the horizontal direction;

[0014] The rotation axis of the air supply pipe is the center line thereof, and the rotation axis of the air supply pipe is located inside the partition.

[0015] More preferably, the plurality of air supply pipes are arranged in parallel and at intervals.

[0016] More preferably, it also includes a linkage mechanism, which includes a synchronous wheel and a synchronous belt, wherein:

[0017] The synchronous wheel is coaxially fixed on the air supply pipe;

[0018] The synchronous belt is sleeved on the outer sides of two adjacent synchronous wheels to enable the plurality of air supply pipes to rotate synchronously.

[0019] Further preferably, the air supply ducts are provided in two groups, each group is provided with multiple air supply ducts, the two groups of air supply ducts are symmetrically arranged about the center line of the drying bin, and the multiple air supply ducts in the same group are connected by the linkage mechanism, and the two air supply ducts in different groups are not connected by the linkage mechanism.

[0020] More preferably, two adjacent air supply pipes are connected via the linkage mechanism.

[0021] On the basis of the above technical solution, preferably, an arc-shaped sealing plate is fixedly provided on the partition, the arc-shaped sealing plate is sealingly rotatably connected to the air supply pipe, and a plurality of the arc-shaped sealing plates are provided on the circumferential side of each air supply pipe.

[0022] On the basis of the above technical solution, preferably, the feed port and the discharge port are relatively arranged on the peripheral side of the drying bin, the hot air port is arranged on the bottom side of the drying bin, and the exhaust port is arranged on the top side of the drying bin;

[0023] The feeding rollers are arranged in a plurality of groups along the direction from the feeding port to the discharging port, and each group has two rollers arranged vertically.

[0024] More preferably, a plurality of hot air outlets are provided.

[0025] The kraft paper drying device of the utility model has the following beneficial effects compared with the prior art:

[0026] (1) By providing a hot air outlet and an exhaust outlet, and utilizing the connection with the hot air circulation device, hot air can be used to dry the kraft paper. By providing a rotatable air supply pipe on the partition, the direction of the air outlet can be adjusted to avoid the problem of mutual interference between the flow directions of multiple hot air streams, thereby facilitating the rapid discharge of hot air and steam, and improving the drying efficiency of the drying device;

[0027] (2) By setting a linkage mechanism, multiple air supply pipes can be adjusted in linkage, so that the drying device can adapt to different working conditions, thereby improving the adaptability of the drying device;

[0028] (3) By providing an arc-shaped sealing plate, the sealing performance between the partition and the air supply pipe can be improved, which not only ensures the directional control performance of the drying device on the hot air, but also helps to increase the service life of the drying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a partial cross-sectional view of a kraft paper drying device of the utility model;

[0031] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0032] Figure 3 It is a three-dimensional diagram of the air supply pipe in a kraft paper drying device of the utility model;

[0033] Figure 4 It is a three-dimensional diagram of the linkage mechanism in a kraft paper drying device of the utility model;

[0034] Figure 5 This is a cross-sectional view of an air supply pipe in a kraft paper drying device of the utility model;

[0035] Figure 6 This is a cross-sectional view of a partition in a kraft paper drying device of the utility model;

[0036] Figure 7 It is a stereoscopic diagram of a kraft paper drying device of the utility model.

[0037] Among them: 1. Drying chamber; 101. Feed inlet; 102. Discharge outlet; 103. Hot air outlet; 104. Exhaust outlet; 1001. Wind source chamber; 1002. Feeding chamber; 2. Partition; 21. Arc sealing plate; 3. Feeding roller; 4. Air supply pipe; 401. Air inlet; 402. Air blowing outlet; 5. Linkage mechanism; 51. Synchronous wheel; 52. Synchronous belt. DETAILED DESCRIPTION

[0038] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figure 1-7 As shown, a kraft paper drying device of the utility model comprises a drying bin 1, a partition 2, a plurality of feeding rollers 3, a plurality of air supply pipes 4 and a linkage mechanism 5.

[0040] Among them, the drying bin 1 is used to provide an environment for drying kraft paper and carry other components. The drying bin 1 is a hollow sealed structure. The drying bin 1 is provided with a feed port 101, a discharge port 102, a hot air port 103 and an exhaust port 104. The feed port 101 and the discharge port 102 are passages for kraft paper to enter and leave the drying bin 1. The hot air port 103 and the exhaust port 104 are used to be connected to the hot air circulation equipment to allow hot air to pass through the drying bin 1 to dry the kraft paper in the drying bin 1. Of course, the hot air circulation equipment should also have a dehumidification function to ensure the drying effect of the drying bin 1.

[0041] The partition 2 is used to divide the drying bin 1. The partition 2 is sealed and fixed in the drying bin 1, and divides the interior of the drying bin 1 into an air source chamber 1001 and a feeding chamber 1002. The air source chamber 1001 and the feeding chamber 1002 are independent of each other.

[0042] The feeding roller 3 is used to convey kraft paper. The feeding roller 3 is rotatably arranged on the drying bin 1 and is located in the feeding cavity 1002. The feeding roller 3 can be connected and driven by an external driving mechanism, such as a motor.

[0043] The air supply pipe 4 is used to adjust the flow direction and flow mode of the hot air. The air supply pipe 4 is fixedly arranged in the partition 2 in a rotatable manner, and its rotation axis is parallel to the horizontal plane. An air inlet 401 and an air blowing port 402 are opened on the circumferential side of the air supply pipe 4. The air inlet 401 and the air blowing port 402 are connected, and the wind source cavity 1001 is connected to the air inlet 401 and the hot air port 103, and the feeding cavity 1002 is connected to the air blowing port 402, the feed port 101, the discharge port 102 and the exhaust port 104. Figure 1 As shown, the kraft paper moves in the feeding chamber 1002 through the feeding roller 3, and the hot air first enters the wind source chamber 1001 through the hot air port 103, and then blows onto the kraft paper in the feeding chamber 1002 through the air inlet 401 and the air blowing port 402 in sequence, heating and evaporating the moisture in the kraft paper, and finally allowing the hot air and water vapor to be quickly discharged to the outside of the drying chamber 1 through the exhaust port 104 to achieve rapid drying of the kraft paper, and the water vapor is removed by the dehumidification mechanism in the hot air circulation device, and the hot air is repeatedly circulated to continuously heat and dry the kraft paper; the air supply pipe 4 and the partition 2 can It is connected by an interference fit, and a corresponding slot is opened on the partition 2, so that the air supply pipe 4 is fixed in the slot by friction. When a sufficiently large force is applied to the air supply pipe 4, the air supply pipe 4 can be driven to rotate. When the air supply pipe 4 rotates, the direction of the blowing port 402 can be changed, so that the flow direction of the hot air can be inclined to the kraft paper. When the hot air contacts the kraft paper, multiple streams of hot air can flow in the same direction without interfering with each other, which is beneficial to improving the efficiency of hot air discharge from the drying bin 1 and the drying efficiency of the drying device.

[0044] Of course, the rotation of the air supply pipe 4 can also be driven by a driving device, such as a motor.

[0045] The air supply pipe 4 is preferably a hollow cylindrical structure with both ends blocked, which is not only convenient for rotation, but also convenient for connecting the air inlet 401 and the air outlet 402; Figure 5 As shown, the air inlet 401 is a long hole structure, the air outlet 402 is a circular hole structure, and each air supply pipe 4 is provided with a plurality of air outlets 402 along its axial direction. Hot air enters the interior of the air supply pipe 4 through the air inlet 401, and then is sprayed onto the kraft paper through the plurality of air outlets 402 in the form of a plurality of branched hot air flows, thereby improving the drying uniformity of the kraft paper and facilitating ensuring the drying uniformity of the kraft paper.

[0046] like Figure 1As shown, the partition 2 and the air supply pipe 4 are both arranged in the horizontal direction; the rotation axis of the air supply pipe 4 is its center line, and the rotation axis of the air supply pipe 4 is located inside the partition 2, that is, the center line of the air supply pipe 4 is located inside the partition 2, and the part of the air supply pipe 4 above the partition 2 and the part below the partition 2 are symmetrical (excluding the air inlet 401 and the air blowing port 402) to ensure the stability of the connection between the air supply pipe 4 and the partition 2.

[0047] like Figure 3 As shown, in order to improve the uniformity of hot air drying the kraft paper, it is preferred that a plurality of air supply pipes 4 are arranged in parallel and at intervals.

[0048] The linkage mechanism 5 is used to enable multiple air supply pipes 4 to rotate synchronously without adjusting the rotation one by one. The linkage mechanism 5 includes a synchronous wheel 51 and a synchronous belt 52, wherein the synchronous wheel 51 is coaxially fixed on the air supply pipe 4; the synchronous belt 52 is sleeved on the outside of two adjacent synchronous wheels 51. When one air supply pipe 4 rotates, it can drive the synchronous wheel 51 on its outside to rotate synchronously, so that the synchronous wheel 51 and the air supply pipe 4 adjacent to it can be driven by the synchronous belt 52 to rotate.

[0049] Regarding the arrangement of the linkage mechanism 5, the present utility model provides two structures:

[0050] The first structure is that two groups of air supply ducts 4 are provided, each group is provided with multiple air supply ducts, and the two groups of air supply ducts 4 are symmetrically arranged about the center line of the drying bin 1, and the multiple air supply ducts 4 in the same group are connected by a linkage mechanism 5, and the two air supply ducts 4 in different groups are not connected by the linkage mechanism 5, that is, a first group of air supply ducts 4 and a second group of air supply ducts 4 are provided in the drying bin 1, the multiple air supply ducts 4 in the first group of air supply ducts 4 are linked by the linkage mechanism 5, and the multiple air supply ducts 4 in the second group of air supply ducts 4 are linked by the linkage mechanism 5, but the first group of air supply ducts 4 and the second group of air supply ducts 4 are not linked. This arrangement can not only allow the hot air to flow in two directions and improve the exhaust efficiency of the hot air, but also can adjust the radiation range of the hot air when the specifications of the required dried kraft paper change, thereby improving the adaptability of the drying device.

[0051] The second structure is Figure 4 As shown, two adjacent air supply pipes 4 are connected via a linkage mechanism 5, that is, all the air supply pipes 4 are moved via the linkage mechanism 5. When one of the air supply pipes 4 is rotated, all the air supply pipes 4 can be driven to rotate synchronously, so as to realize rapid adjustment of all the air supply pipes 4.

[0052] The above two structures do not exist independently and can be switched at any time, such as Figure 4 As shown, the second setting structure of the linkage mechanism 5 is shown, and when the middle synchronous belt 52 is removed, the linkage mechanism 5 can be switched to the first setting structure.

[0053] like Figure 6 As shown, an arc-shaped sealing plate 21 is fixedly provided on the partition 2. The arc-shaped sealing plate 21 is preferably made of rubber. The arc-shaped sealing plate 21 is sealingly and rotatably connected to the air supply pipe 4, and a plurality of arc-shaped sealing plates 21 are provided on the circumferential side of each air supply pipe 4 to ensure the fixing firmness and sealing performance of the partition 2 and the air supply pipe 4, thereby increasing the service life of the drying device.

[0054] like Figure 1 and Figure 7 As shown, the feed port 101 and the discharge port 102 are relatively arranged on the peripheral side of the drying bin 1, the hot air port 103 is arranged on the bottom side of the drying bin 1, and the exhaust port 104 is arranged on the top side of the drying bin 1, so as to facilitate the transportation of kraft paper on the drying bin 1 and the flow of hot air in the drying bin 1; a plurality of groups of feed rollers 3 are arranged along the direction from the feed port 101 to the discharge port 102, and each group has two rollers arranged vertically to improve the transportation stability of the kraft paper.

[0055] In order to make the hot air blow evenly toward the kraft paper and reduce the temperature difference before the hot air enters the air inlet 401, it is preferred to provide a plurality of hot air outlets 103 and arrange the plurality of hot air outlets 103 along the conveying direction of the kraft paper.

[0056] The working principle of a kraft paper drying device of the utility model is as follows:

[0057] like Figure 1 As shown, the kraft paper passes through the feed port 101 into the drying chamber 1, and then moves from the discharge port 102 to the outside of the drying chamber 1 through the conveyance of multiple feed rollers 3, and is continuously conveyed in the feed chamber 1002 by the feed rollers 3;

[0058] The hot air enters the wind source cavity 1001 through the hot air port 103, then enters the interior of the air supply pipe 4 through the air inlet 401, and is discharged into the feeding cavity 1002 through the air blowing port 402 to heat the kraft paper. The moisture in the kraft paper evaporates due to the heat and is discharged from the exhaust port 104 along with the hot air, thereby achieving the drying of the kraft paper. During this period, the direction of the air blowing port 402 can be adjusted by rotating the air supply pipe 4 to tilt the hot air toward the kraft paper, so that the hot air can be quickly and uniformly discharged to the outside of the drying chamber 1 after contacting the kraft paper, thereby improving the drying efficiency of the drying device.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A kraft paper drying device, characterized in that: It comprises a drying chamber (1), a partition (2), a plurality of feeding rollers (3) and a plurality of air supply pipes (4), wherein: The drying bin (1) is provided with a material inlet (101), a material outlet (102), a hot air outlet (103) and an exhaust outlet (104); The partition (2) is sealed and fixed in the drying chamber (1), and divides the interior of the drying chamber (1) into an air source chamber (1001) and a feeding chamber (1002); The feeding roller (3) is rotatably arranged on the drying bin (1) and is located in the feeding cavity (1002); The air supply pipe (4) is fixedly arranged in the partition (2) in a rotatable manner, and its rotation axis is parallel to the horizontal plane. An air inlet (401) and an air blowing port (402) are provided on the circumferential side of the air supply pipe (4), the air inlet (401) and the air blowing port (402) are connected, and the wind source cavity (1001) is connected to the air inlet (401) and the hot air port (103), and the feeding cavity (1002) is connected to the air blowing port (402), the feeding port (101), the outlet (102) and the exhaust port (104).

2. A kraft paper drying device as claimed in claim 1, characterized in that: The air supply pipe (4) is a hollow circular tube structure with both ends blocked; The air inlet (401) is a long strip hole-shaped structure, the air blowing port (402) is a circular hole-shaped structure, and each of the air supply pipes (4) is provided with a plurality of the air blowing ports (402) along its axial direction.

3. A kraft paper drying device as claimed in claim 2, characterized in that: The partition plate (2) and the air supply pipe (4) are both arranged in a horizontal direction; The rotation axis of the air supply pipe (4) is its center line, and the rotation axis of the air supply pipe (4) is located inside the partition (2).

4. A kraft paper drying device as claimed in claim 3, characterized in that: The plurality of air supply pipes (4) are arranged in parallel and at intervals.

5. A kraft paper drying device as claimed in claim 4, characterized in that: It also includes a linkage mechanism (5), wherein the linkage mechanism (5) includes a synchronous wheel (51) and a synchronous belt (52), wherein: The synchronous wheel (51) is coaxially fixed on the air supply pipe (4); The synchronous belt (52) is sleeved on the outside of two adjacent synchronous wheels (51) and is used to enable the plurality of air supply pipes (4) to rotate synchronously.

6. A kraft paper drying device as claimed in claim 5, characterized in that: The air supply pipes (4) are provided in two groups, each group being provided with a plurality of air supply pipes. The two groups of air supply pipes (4) are symmetrically arranged about the center line of the drying chamber (1), and the plurality of air supply pipes (4) in the same group are connected via the linkage mechanism (5), while the two air supply pipes (4) in different groups are not connected via the linkage mechanism (5).

7. The kraft paper drying device according to claim 5, characterized in that: Two adjacent air supply pipes (4) are connected via the linkage mechanism (5).

8. The kraft paper drying device according to claim 1, characterized in that: An arc-shaped sealing plate (21) is fixedly arranged on the partition plate (2), the arc-shaped sealing plate (21) is sealingly rotatably connected to the air supply pipe (4), and a plurality of the arc-shaped sealing plates (21) are arranged on the circumferential side of each air supply pipe (4).

9. The kraft paper drying device according to claim 1, characterized in that: The feed port (101) and the discharge port (102) are arranged on the peripheral side of the drying chamber (1) relative to each other, the hot air port (103) is arranged on the bottom side of the drying chamber (1), and the exhaust port (104) is arranged on the top side of the drying chamber (1); The feed rollers (3) are arranged in a plurality of groups along the direction from the feed port (101) to the discharge port (102), and each group includes two rollers arranged vertically.

10. The kraft paper drying device according to claim 9, characterized in that: The hot air outlet (103) is provided in plurality.

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