Drying device for papermaking production

Abstract

The utility model relates to the technical field of papermaking production, and discloses a drying device for papermaking production, which comprises a drying box, openings are arranged on opposite sides along the length direction, a conveying belt is movably matched between the two openings, and two ends of the conveying belt extend out of the drying box; the air inlet assembly comprises a plurality of air inlet boxes arranged on the two sides of the bottom of the drying box in a communicating mode, air inlets are formed in the sides, away from the drying box, of the air inlet boxes, and filtering pieces are detachably connected into the air inlet boxes; the air outlet assemblies are arranged on the two sides of the top of the drying box and used for discharging air in the direction away from the drying box; the heating assembly comprises a first heating plate fixedly connected to the inner wall of the bottom end of the drying box, a second heating plate is further arranged above the conveying belt, a lifting part is arranged in the drying box, and the lifting end of the lifting part is connected with the second heating plate. The paper drying effect can be improved, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of papermaking production technology, and in particular to a drying device for papermaking production. Background Technology

[0002] In the papermaking process, pulp is usually passed through a frame with bamboo screens and polyester mesh to form wet paper sheets. After being initially dehydrated by a press, the paper is then dried to produce paper.

[0003] In existing technologies, such as the papermaking machinery drying system with patent number CN221971966U, the paper, after preliminary dehydration, is fed into the feed inlet and transported by several conveyor wheels within the drying chamber. This system clearly has certain drawbacks. Not only does the paper retain moisture, making it too weak to withstand the traction of the conveyor wheels and causing tearing, but the lack of a ventilation system within the drying chamber also results in moisture from the paper remaining inside. This moisture condenses after pre-cooling, forming new water droplets that fall onto the paper, affecting the drying effect. Therefore, there is an urgent need for a drying device for papermaking production that addresses these problems. Utility Model Content

[0004] The purpose of this invention is to provide a drying device for paper production, so as to solve the problems existing in the prior art, improve the drying effect of paper, and accelerate production efficiency.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a drying device for papermaking production, comprising:

[0006] The drying oven has openings on opposite sides along its length, and a conveyor belt is movably fitted between the two openings, with both ends of the conveyor belt extending out of the drying oven.

[0007] The air inlet assembly includes several air inlet boxes connected to both sides of the bottom of the drying oven. Each air inlet box has an air inlet on the side away from the drying oven, and a filter element is detachably connected inside the air inlet box.

[0008] An air outlet assembly is disposed on both sides of the top of the drying chamber, and the air outlet assembly is used to discharge air in a direction away from the drying chamber;

[0009] The heating assembly includes a first heating plate fixed to the inner wall of the bottom end of the drying chamber, a second heating plate is also provided above the conveyor belt, and a lifting component is provided inside the drying chamber, with the lifting end of the lifting component connected to the second heating plate.

[0010] Preferred options also include:

[0011] A pair of pressure rollers located at the opening are arranged vertically opposite each other at the bottom and top of the conveyor belt process section, and the pair of pressure rollers are elastically connected to the drying box respectively, and the pair of pressure rollers are in rolling contact with the process section.

[0012] Preferably, a pair of support seats are fixedly connected to opposite sides of the opening, and the support seats are located between the process section and the return section. A groove is provided on the side of the support seat near the process section. A support rod is slidably connected in the groove. The two ends of a spring are fixedly connected between the support rod and the inner wall of the bottom end of the groove. A support plate is fixedly connected to the part of the support rod extending out of the support seat. A transition groove is provided on the side of the support plate near the process section. The lowermost pressure roller of the pair of pressure rollers is transitioned into the transition groove.

[0013] Preferably, a rubber sheet is fixedly attached to the bottom end of the opening, and the top end of the rubber sheet slides in contact with the bottom surface of the return section.

[0014] Preferably, the filter element includes:

[0015] The insert has a slot at the top of the air inlet box, and the insert is inserted into the slot. The bottom of the insert extends into the air inlet box and is fixed with several layers of filter screens, and the filter screens can cover the air inlet.

[0016] Preferably, a grille is fixedly connected inside the air inlet.

[0017] Preferably, a plurality of support wheels are sequentially connected inside the drying chamber along the conveyor belt transport direction. The support wheels are arranged between the progress section and the return section, and the support wheels are in rolling contact with the conveyor belt.

[0018] Preferably, the drying chamber has an air outlet on its side wall, and the air outlet assembly is a fan installed in the air outlet, with the air outlet end of the fan arranged away from the drying chamber.

[0019] Preferably, the lifting component includes at least one cylinder, which is fixed to the top surface of the drying chamber, and the piston end of the cylinder extends into the drying chamber and is fixed to the second heating plate.

[0020] The present invention discloses the following technical effects:

[0021] This invention uses a conveyor belt to transport the paper to be dried, which avoids direct traction of the paper by the conveyor wheels compared to existing technologies, ensuring the drying quality of the paper. By connecting several air inlets to both sides of the bottom of the drying chamber, and detachably connecting filter elements inside the air inlets, the air entering the drying chamber is filtered, reducing external impurities from contaminating the paper and improving the drying effect. At the same time, the air outlet assembly discharges the gas containing moisture along the top of the drying chamber, preventing moisture from remaining inside. A first heating plate and a second heating plate are installed on the conveyor belt. The first heating plate dries the paper on the conveyor belt from bottom to top, while the second heating plate is located above the conveyor belt and its lifting and lowering are controlled by a lifting device, allowing the heating plate to dry the paper from top to bottom, thereby improving the drying efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a diagram showing the positional relationship between the drying box and the air inlet box in this utility model;

[0024] Figure 2 This is a diagram showing the positional relationship between the second heating plate and the conveyor belt in this utility model;

[0025] Figure 3 This is a diagram showing the positional relationship between the blower and the second heating plate in this utility model;

[0026] Figure 4 This is a diagram showing the positional relationship between the pressure roller and the process section in this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the grille and filter screen in this utility model;

[0028] The components include: 1. Drying box; 2. Conveyor belt; 3. Air inlet box; 4. First heating plate; 5. Second heating plate; 6. Pressure roller; 7. Support seat; 8. Support rod; 9. Spring; 10. Support plate; 11. Rubber sheet; 12. Insert block; 13. Filter screen; 14. Grille; 15. Support wheel; 16. Fan; 17. Cylinder. Detailed Implementation

[0029] 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 protection scope of the present utility model.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1-5 This utility model provides a drying device for papermaking production, comprising:

[0032] The drying chamber 1 has openings on opposite sides along its length, and a conveyor belt 2 is movably fitted between the two openings, with both ends of the conveyor belt 2 extending out of the drying chamber 1.

[0033] The air inlet assembly includes several air inlet boxes 3 connected to both sides of the bottom of the drying chamber 1. An air inlet is provided on the side of the air inlet box 3 away from the drying chamber 1. A filter element is detachably connected inside the air inlet box 3.

[0034] An air outlet assembly is installed on both sides of the top of the drying chamber 1. The air outlet assembly is used to discharge air in a direction away from the drying chamber 1.

[0035] The heating assembly includes a first heating plate 4 fixed to the inner wall of the bottom end of the drying chamber 1, a second heating plate 5 above the conveyor belt 2, and a lifting component inside the drying chamber 1, the lifting end of the lifting component being connected to the second heating plate 5.

[0036] This invention uses a conveyor belt 2 to transport the paper to be dried, which avoids direct traction of the paper by the conveyor wheels compared to existing technologies, ensuring the drying quality of the paper. By connecting several air inlets 3 to both sides of the bottom of the drying chamber 1, and detachably connecting filter elements in the air inlets 3, the air entering the drying chamber 1 is filtered, reducing external impurities from contaminating the paper and improving the drying effect. At the same time, the air outlet assembly discharges the gas containing moisture along the top of the drying chamber 1, preventing moisture from remaining in the drying chamber 1. A first heating plate 4 and a second heating plate 5 are set for the conveyor belt 2. The first heating plate 4 dries the paper on the conveyor belt 2 from bottom to top, while the second heating plate 5 is located above the conveyor belt 2 and is raised and lowered by a lifting component, so that the heating plate can dry the paper from top to bottom, thereby improving the drying efficiency.

[0037] When drying paper, the operator simply lays the partially dehydrated paper flat on the surface of the conveyor belt 2 on one side of the drying chamber 1. As the conveyor belt 2 transports the paper, the operator can lay multiple sheets of paper on the top surface of the conveyor belt 2 during its progress. The drying process continues, and the conveyor belt 2 passes the dried paper out from the other side of the drying chamber 1. Another operator can then remove the paper. As the conveyor belt 2 rotates in a cycle, it can effectively carry out industrial-scale drying of large quantities of paper.

[0038] Furthermore, it also includes:

[0039] A pair of pressure rollers 6 are located at the opening. The pair of pressure rollers 6 are arranged vertically opposite each other at the bottom and top of the conveyor belt 2 process section, and the pair of pressure rollers 6 are elastically connected to the drying box 1 respectively, and the pair of pressure rollers 6 are in rolling contact with the process section.

[0040] For the process section of conveyor belt 2, a pair of pressure rollers 6 are arranged opposite each other so that they can roll and contact the process section in the opposite direction to flatten the paper after initial dewatering and drying, thereby improving the drying quality.

[0041] Furthermore, a pair of support seats 7 are fixedly connected to opposite sides of the opening, and the support seats 7 are located between the process section and the return section. A groove is opened on the side of the support seat 7 near the process section. A support rod 8 is slidably connected in the groove. The two ends of a spring 9 are fixedly connected between the support rod 8 and the inner wall of the bottom end of the groove. A support plate 10 is fixedly connected to the part of the support rod 8 that extends out of the support seat 7. A transfer groove is opened on the side of the support plate 10 near the process section. The lowermost pressure roller 6 of the pair of pressure rollers 6 is transferred in the transfer groove.

[0042] Specifically, the support seat 7 forms a fixed support between the process section and the return section. The support rod 8 is elastically slidably connected through the groove on the support seat 7. The support rod 8 is fixedly connected to the support plate 10. The transfer groove on the support plate 10 allows the pressure roller 6 to be transferred onto the support plate 10. The spring 9 provides elastic pressure to the pressure roller 6, so that the pressure roller 6 rolls in contact with the process section, realizing the elastic transfer between the pressure roller 6 and the drying box 1.

[0043] In this technical solution, the uppermost pressure roller 6 can be directly and elastically connected to the drying box 1. By opening a groove at the top of the opening, the support rod 8 is slidably connected in the groove. The support plate 10 is elastically connected to the drying box 1 by the cooperation of the spring 9 and the support rod 8. The uppermost pressure roller 6 rolls and contacts the top surface of the process section vertically downward.

[0044] Furthermore, a rubber sheet 11 is fixedly attached to the bottom edge of the opening, and the top of the rubber sheet 11 slides in contact with the bottom surface of the return section.

[0045] By sliding contact between the rubber sheet 11 and the bottom surface of the return section, the conveyor belt 2 can be cleaned, and residual paper scraps and other impurities can be scraped off.

[0046] Furthermore, the filter element includes:

[0047] The top of the air inlet box 3 has a slot for inserting the plug 12. The plug 12 is inserted into the slot and the bottom of the plug 12 extends into the air inlet box 3 and is fixed with several layers of filter screens 13. The filter screens 13 can cover the air inlet.

[0048] The filter screen 13 can be detachably connected to the air inlet box 3 via the insert block 12, thereby enabling the replacement of the filter screen 13, ensuring the filtration effect, blocking some external impurities, and preventing contamination of the dried paper.

[0049] The filter screen 13 can be prepared using common sponge or activated carbon layers.

[0050] Furthermore, a grille 14 is fixedly connected inside the air inlet.

[0051] Furthermore, several support wheels 15 are successively connected inside the drying box 1 along the transport direction of the conveyor belt 2. The support wheels 15 are arranged between the progress section and the return section, and the support wheels 15 are in rolling contact with the conveyor belt 2.

[0052] The support wheel 15 improves the conveying stability of the conveyor belt 2.

[0053] Furthermore, an air outlet is provided on the side wall of the drying oven 1, and the air outlet assembly is a fan 16 installed in the air outlet. The air outlet end of the fan 16 is arranged away from the drying oven 1.

[0054] The high-moisture air generated during heating and drying in the drying chamber 1 is discharged by the fan at 16 o'clock to prevent the pre-cooled air from condensing into water droplets and affecting the dried paper.

[0055] Furthermore, the lifting component includes at least one cylinder 17, which is fixedly connected to the top surface of the drying chamber 1, and the piston end of the cylinder 17 extends into the drying chamber 1 and is fixedly connected to the second heating plate 5.

[0056] The second heating plate 5 is raised and lowered by the cylinder 17, which improves the drying efficiency of the paper. It can be understood that when the second heating plate 5 is raised and lowered by the cylinder 17, the horizontal height of the fan 16 is higher than that of the second heating plate 5 when drying on the top surface of the conveyor belt 2, which can reduce the heat from being discharged through the air outlet.

[0057] In this technical solution, the optimal heating temperature for the first heating plate 4 and the second heating plate 5 is between 60℃ and 80℃.

[0058] The working principle of the drying device for papermaking production according to this utility model is as follows:

[0059] During the paper drying process, a worker stands on one side of the drying chamber 1 and, along with the conveyor belt 2, lays the partially dehydrated paper flat on the surface of the conveyor belt 2 one by one. Under the interaction of a pair of pressure rollers 6, the paper adheres to the conveyor belt 2 in the intermediate section. By laying multiple sheets of paper on the top surface of the intermediate section of the conveyor belt 2, the first heating plate 4 and the second heating plate 5 are activated. The second heating plate 5 is lowered using a cylinder 17 to improve drying efficiency. Drying continues, and the fan 16 is activated to expel the water vapor from the drying chamber 1. The filter screen 13 filters the air entering the drying chamber 1. During the conveyor belt 2 transport process, the partially dehydrated paper is gradually dried, and finally, the dried paper is passed out from the other side of the drying chamber 1, where another worker removes the paper to complete the drying process.

[0060] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0061] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A drying apparatus for papermaking production, characterized in that, include: The drying box (1) has openings on opposite sides along its length, and a conveyor belt (2) is movably fitted between the two openings, with both ends of the conveyor belt (2) extending out of the drying box (1). The air inlet assembly includes several air inlet boxes (3) connected to both sides of the bottom of the drying box (1). The air inlet box (3) has an air inlet on the side away from the drying box (1). A filter element is detachably connected inside the air inlet box (3). An air outlet assembly is provided on both sides of the top of the drying chamber (1), and the air outlet assembly is used to discharge air in a direction away from the drying chamber (1); The heating assembly includes a first heating plate (4) fixed to the inner wall of the bottom end of the drying box (1), a second heating plate (5) is also provided above the conveyor belt (2), and a lifting component is provided inside the drying box (1), with the lifting end of the lifting component connected to the second heating plate (5).

2. The drying apparatus for papermaking production according to claim 1, characterized in that, Also includes: A pair of pressure rollers (6) located at the opening are arranged vertically opposite each other at the bottom and top of the conveyor belt (2) process section, and the pair of pressure rollers (6) are elastically connected to the drying box (1) respectively, and the pair of pressure rollers (6) are in rolling contact with the process section.

3. The drying apparatus for papermaking production according to claim 2, characterized in that: A pair of support seats (7) are fixedly connected to opposite sides of the opening, and the support seats (7) are located between the process section and the return section. A groove is provided on the side of the support seat (7) near the process section. A support rod (8) is slidably connected in the groove. The two ends of a spring (9) are fixedly connected between the support rod (8) and the inner wall of the bottom end of the groove. A support plate (10) is fixedly connected to the part of the support rod (8) that extends out of the support seat (7). A transfer groove is provided on the side of the support plate (10) near the process section. The lowermost pressure roller (6) of the pair of pressure rollers (6) is transferred in the transfer groove.

4. The drying apparatus for papermaking production according to claim 3, characterized in that: A rubber sheet (11) is fixedly attached to the bottom edge of the opening, and the top edge of the rubber sheet (11) slides in contact with the bottom surface of the return section.

5. The drying apparatus for papermaking production according to claim 1, characterized in that, The filter element includes: Insert (12), the top of the air inlet box (3) is provided with a slot, the insert (12) is inserted into the slot, the bottom end of the insert (12) extends into the air inlet box (3) and is fixed with several layers of filter screen (13), and the filter screen (13) can cover the air inlet.

6. The drying apparatus for papermaking production according to claim 1, characterized in that: A grille (14) is fixedly connected inside the air inlet.

7. The drying apparatus for papermaking production according to claim 3, characterized in that: The drying box (1) has several support wheels (15) that are successively connected along the transport direction of the conveyor belt (2). The support wheels (15) are arranged between the process section and the return section, and the support wheels (15) are in rolling contact with the conveyor belt (2).

8. The drying apparatus for papermaking production according to claim 1, characterized in that: The drying chamber (1) has an air outlet on its side wall. The air outlet assembly is a fan (16) installed in the air outlet. The air outlet end of the fan (16) is arranged away from the drying chamber (1).

9. The drying apparatus for papermaking production according to claim 1, characterized in that: The lifting component includes at least one cylinder (17), which is fixed to the top surface of the drying chamber (1). The piston end of the cylinder (17) extends into the drying chamber (1) and is fixed to the second heating plate (5).

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