Efficient drying device for papermaking
By designing paper spreading components, drying components and hot gas circulation components in the paper-making drying device, the energy waste and space occupation problems during paper drying in the prior art are solved, and the efficient and energy-saving drying effect is achieved, and the processing quality of paper is ensured.
Patent Information
- Application Number
- CN202420707934.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-08
AI Technical Summary
The existing paper-making drying device will generate a large amount of high-temperature and humid water vapor when drying paper, resulting in waste of energy and a large amount of drying space, and the length of the paper when drying cannot be changed.
An efficient drying device for papermaking is designed, including a drying box, an extrusion roller, a paper spreading assembly, a drying assembly and a hot gas circulation assembly. The paper spreading amount is increased by setting up the paper spreading assembly, the upper and lower surfaces of the paper are dried simultaneously by using the drying assembly, and the water vapor is removed through the hot gas circulation assembly and the waste heat is transported into the extrusion roller to preheat the paper to be dried.
This device not only speeds up the drying speed of paper, improves drying efficiency and quality, but also effectively utilizes the high-temperature and humid water vapor generated during the drying process. It has the characteristics of high efficiency and energy saving, avoids the waste of energy, and prevents the extrusion roller from bonding to paper, ensuring the processing quality of paper.
Smart Images
Figure CN222685115U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of papermaking equipment, in particular to a high-efficiency drying device for papermaking. Background Art
[0002] Papermaking is an important invention of ancient China. There are two forms: machine-made and hand-made. Machine-made is carried out continuously on a papermaking machine. The pulp suitable for paper quality is diluted with water to a certain concentration, and initially dehydrated on the wire of the papermaking machine to form wet paper sheets, which are then squeezed for dehydration and dried into paper.
[0003] In existing papermaking drying devices, a large amount of hot and humid water vapor is generated when the paper is dried. This water vapor is usually discharged directly and cannot be effectively reused, resulting in energy waste. In addition, the length of the paper cannot be changed during drying, resulting in a large amount of drying space being occupied.
[0004] Therefore, the applicant proposes a high-efficiency drying device for papermaking to solve the above problems. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model aims to provide a high-efficiency drying device for papermaking.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0007] A high-efficiency drying device for papermaking comprises a drying box, wherein a paper inlet is provided on one side of the drying box, a paper outlet is provided on the other side of the drying box, a plurality of squeezing rollers and a paper spreading assembly are sequentially arranged in the drying box along the paper conveying direction, a drying assembly is arranged above the paper spreading assembly, a hot air circulation assembly is arranged on one side of the drying assembly, and the hot air circulation assembly is interconnected with the plurality of squeezing rollers.
[0008] Furthermore, the squeezing roller comprises a roller body, a cavity is provided in the roller body, a plurality of through holes are evenly distributed on the surface of the roller body, and a rotating shaft and a rotating tube are respectively provided at both ends of the roller body.
[0009] Furthermore, the paper spreading assembly comprises a plurality of relay rollers rotatably mounted in the drying box, and a spreading roller is movably arranged up and down between two adjacent relay rollers.
[0010] Furthermore, a slide groove is provided on the inner wall of the drying box between two adjacent relay rollers, electric telescopic rods are provided on both sides of the bottom of the drying box, a slider is installed on the telescopic end of the electric telescopic rod, a spreading roller is rotatably provided between the two sliders, and the slider is slidably matched with the slide groove.
[0011] Furthermore, the drying component includes a blower and a heating box installed on the top of the drying box, a heating pipe is provided in the heating box, one side of the heating box is connected to the blower, and the other side of the heating box is connected to the hot air pipe, and hot air hoods are installed at the ends of the hot air pipe near the top and near the bottom of the drying box.
[0012] Furthermore, the hot air circulation component includes an exhaust fan installed on the top of the drying box, the air inlet of the exhaust fan is connected through an air inlet pipe, and the air inlet pipe extends into the interior of the drying box and is connected to the suction hood, the air outlet of the exhaust fan is connected to the lower part of the dewatering tank through an air outlet pipe, and one side of the upper part of the dewatering tank is connected to the air distribution pipe through an exhaust pipe, and the air distribution pipe is provided with a plurality of branch pipes, and the branch pipes are connected to the rotating pipe.
[0013] Furthermore, the branch pipe is connected to the rotating pipe through a snap-on rotating joint.
[0014] Furthermore, a water receiving trough is provided below the corresponding squeezing roller in the drying box, and a first water outlet pipe extending out of the drying box is provided on one side of the lower portion of the water receiving trough.
[0015] Furthermore, a demister is installed in the dewatering tank.
[0016] Furthermore, a second water outlet pipe extending to the water receiving trough is provided on one side of the lower portion of the water removal tank.
[0017] Compared with the prior art, the utility model provides a high-efficiency drying device for papermaking, which has the following beneficial effects:
[0018] The utility model increases the spreading amount of paper in the drying process by arranging a paper spreading component, reduces the occupation of the drying space, and also increases the contact time and contact area between the paper and the hot air, thereby accelerating the drying speed of the paper; arranging the drying component to dry the upper and lower surfaces of the paper at the same time, thereby improving the efficiency of the drying process in the drying box and improving the drying quality; through the mutual coordination of the hot air circulation component and the squeezing roller, after the water vapor generated when the paper is dried is removed, the residual heat is transported to the cavity in the squeezing roller and discharged to the outside through the through hole to preheat the paper to be dried, which not only accelerates the drying efficiency of the paper, but also effectively utilizes the high-temperature and humid water vapor generated in the drying process, has the characteristics of high efficiency and energy saving, avoids the waste of energy, and this structural design can prevent the squeezing roller from adhering to the paper, thereby ensuring the processing quality of the paper. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 It is a structural schematic diagram of the spreading roller of the utility model;
[0021] Figure 3 It is a structural schematic diagram of the extrusion roller of the utility model.
[0022] Markings in the figure: 1. Drying box; 2. Paper inlet; 3. Paper outlet; 4. Squeeze roller; 41. Roller body; 42. Cavity; 43. Through hole; 44. Rotating shaft; 45. Rotating tube; 5. Paper spreading assembly; 51. Relay roller; 52. Spreading roller; 53. Slide; 54. Electric telescopic rod; 55. Sliding block; 6. Drying assembly; 61. Blower; 62. Heating box; 63. Heating pipe; 64. Hot air pipe; 65. Hot air hood; 7. Hot air circulation assembly; 71. Exhaust fan; 72. Suction hood; 73. Water removal tank; 74. Exhaust pipe; 75. Air distribution pipe; 76. Branch pipe; 77. Inlet pipe; 78. Outlet pipe; 8. Water receiving trough; 9. Defogger; 10. First water outlet pipe; 11. Second water outlet pipe. DETAILED DESCRIPTION
[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0024] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.
[0025] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.
[0028] The utility model provides a high-efficiency drying device for papermaking, referring to Figures 1 to 3 , comprising a drying box 1, a paper inlet 2 is provided on one side of the drying box 1, a paper outlet 3 is provided on the other side of the drying box 1, a plurality of squeezing rollers 4 and a paper spreading component 5 are sequentially provided in the drying box 1 along the paper conveying direction, a drying component 6 is provided above the paper spreading component 5, a hot air circulation component 7 is provided on one side of the drying component 6, and the hot air circulation component 7 is communicated with the plurality of squeezing rollers 4.
[0029] Specifically, the squeezing rollers 4 are arranged up and down, and the paper is located between the squeezing rollers 4 arranged up and down. Every two squeezing rollers 4 arranged up and down form a group. In this embodiment, multiple groups can be set to squeeze the paper multiple times to fully remove the moisture in the paper.
[0030] Reference Figure 3 In this embodiment, the squeezing roller 4 includes a roller body 41, a cavity 42 is provided in the roller body 41, a plurality of through holes 43 are evenly distributed on the surface of the roller body 41, and a rotating shaft 44 and a rotating tube 45 are respectively provided at both ends of the roller body 41.
[0031] Specifically, the through hole 43 is communicated with the cavity 42 ; the rotating shaft 44 and the rotating tube 45 are rotatably connected to the inner wall of the drying box 1 respectively, and the rotating tube 45 can extend out of the drying box 1 .
[0032] Reference Figure 1 and Figure 2 In this embodiment, the paper spreading assembly 5 includes a plurality of relay rollers 51 rotatably installed in the drying box 1 , and a spreading roller 52 is movably provided between two adjacent relay rollers 51 .
[0033] Reference Figure 1 and Figure 2 In this embodiment, a slide groove 53 is provided on the inner wall of the drying box 1 between two adjacent relay rollers 51, and electric telescopic rods 54 are provided on both sides of the bottom of the drying box 1. A slider 55 is installed on the telescopic end of the electric telescopic rod 54. A spreading roller 52 is rotatably provided between the two sliders 55, and the slider 55 is slidably matched with the slide groove 53.
[0034] Specifically, both ends of the relay roller 51 are rotatably connected to the inner wall of the drying box 1; the slider 55 can move along the direction of the slide groove 53 to improve the stability of the spreading roller 52 moving up and down.
[0035] The lowering of the electric telescopic rod 54 drives the spreading roller 52 to move downward, thereby increasing the spreading amount of the paper during the drying process, reducing the occupation of the drying space, and also increasing the contact time and contact area between the paper and the hot air, thereby accelerating the drying speed of the paper.
[0036] Reference Figure 1 In this embodiment, the drying component 6 includes a blower 61 and a heating box 62 installed on the top of the drying box 1. A heating pipe 63 is provided in the heating box 62. One side of the heating box 62 is connected to the blower 61, and the other side of the heating box 62 is connected to the hot air pipe 64. The ends of the hot air pipe 64 are located near the top and near the bottom of the drying box 1, and hot air covers 65 are installed. The upper and lower surfaces of the paper are dried simultaneously, which improves the drying efficiency of the drying box and improves the quality of drying.
[0037] Specifically, the hot air hood 65 near the top position is located above the relay roller 51 ; the hot air hood 65 near the bottom position is located below the spreading roller 52 .
[0038] Reference Figure 1 In this embodiment, the hot air circulation component 7 includes an exhaust fan 71 installed on the top of the drying box 1, which is used to extract water vapor from the drying box 1. The air inlet of the exhaust fan 71 is connected through an air inlet pipe 77, and the air inlet pipe 77 extends into the interior of the drying box 1 and is connected to the suction hood 72. The air outlet of the exhaust fan 71 is connected to the lower part of the dewatering box 73 through an air outlet pipe 78. One side of the upper part of the dewatering box 73 is connected to the air distribution pipe 75 through an exhaust pipe 74. The air distribution pipe 75 is provided with a plurality of branch pipes 76, and the branch pipes 76 are connected to the rotating pipe 45.
[0039] Specifically, in this embodiment, the air suction hoods 72 are located on both sides of the hot air hood 65 to improve the extraction efficiency; and the residual heat is transported to the rotating pipe 45 through the branch pipe 76 .
[0040] Among them, refer to Figure 1 In this embodiment, the branch pipe 76 is connected to the rotating pipe 45 through a snap-on rotating joint to ensure the tightness of the connection between the branch pipe 76 and the rotating pipe 45.
[0041] Reference Figure 1 In this embodiment, a demister 9 is installed in the dehumidification box 73, and the moisture in the water vapor is removed by the demister 9.
[0042] Reference Figure 1 In this embodiment, a water receiving trough 8 is provided below the corresponding squeezing roller 4 in the drying box 1 to collect water squeezed out of the paper, and a first water outlet pipe 10 extending out of the drying box 1 is provided on one side of the lower part of the water receiving trough 8.
[0043] Specifically, the bottom of the water receiving trough 8 is inclined, and the first water outlet pipe 10 is located on the lower side of the bottom of the water receiving trough 8 .
[0044] Reference Figure 1 In this embodiment, a second water outlet pipe 11 extending to the water receiving tank 8 is provided on one side of the lower portion of the water removal box 73 .
[0045] Specifically, the bottom of the water removal tank 73 is inclined, and the second water outlet pipe 11 is located at the lower side of the bottom of the water removal tank 73 .
[0046] In this embodiment, the electric telescopic rod 54, the blower 61, the heating tube 63, the exhaust fan 71 and the defogger 9 are all prior arts and will not be described in detail herein.
[0047] Working principle: When in use, the paper is transferred to the drying box 1, and most of the water in the paper is removed by the squeezing roller 4. The blower 61 is started, and the wind is heated by the heating tube 63, and the hot air is output from the hot air hood 65 to dry the upper and lower surfaces of the paper at the same time. At the same time, the exhaust fan 71 is started to discharge the high-temperature and humid water vapor generated in the drying process in time. After the water vapor is dehumidified by the demister 9, the residual heat is transported to the rotating tube 45 through the branch pipe 76, enters the cavity 42 in the roller body 41, and is discharged to the outside through the through hole 43, which can preheat the paper to be dried, not only speeding up the drying efficiency of the paper, but also effectively utilizing the high-temperature and humid water vapor generated in the drying process, with the characteristics of high efficiency and energy saving, avoiding energy waste, and this structural design can prevent the squeezing roller from sticking to the paper, ensuring the processing quality of the paper;
[0048] The lowering of the electric telescopic rod 54 drives the spreading roller 52 to move downward, thereby increasing the spreading amount of the paper during the drying process, reducing the occupation of the drying space, and also increasing the contact time and contact area between the paper and the hot air, thereby accelerating the drying speed of the paper.
[0049] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0050] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.
Claims
1. A high-efficiency drying device for papermaking, comprising a drying box (1), characterized in that: A paper inlet (2) is provided on one side of the drying box (1), and a paper outlet (3) is provided on the other side of the drying box (1). A plurality of squeezing rollers (4) and a paper spreading assembly (5) are sequentially provided in the drying box (1) along the paper conveying direction. A drying assembly (6) is provided above the paper spreading assembly (5). A hot air circulation assembly (7) is provided on one side of the drying assembly (6), and the hot air circulation assembly (7) is communicated with the plurality of squeezing rollers (4).
2. The high-efficiency drying device for papermaking according to claim 1, characterized in that: The squeezing roller (4) comprises a roller body (41), a cavity (42) is provided in the roller body (41), a plurality of through holes (43) are evenly distributed on the surface of the roller body (41), and a rotating shaft (44) and a rotating tube (45) are respectively provided at two ends of the roller body (41).
3. The high-efficiency drying device for papermaking according to claim 1, characterized in that: The paper spreading assembly (5) comprises a plurality of relay rollers (51) rotatably mounted in the drying box (1), and a spreading roller (52) is movably arranged up and down between two adjacent relay rollers (51).
4. The high-efficiency drying device for papermaking according to claim 3, characterized in that: A slide groove (53) is provided on the inner wall of the drying box (1) between two adjacent relay rollers (51), and electric telescopic rods (54) are provided on both sides of the bottom of the drying box (1). A slider (55) is installed on the telescopic end of the electric telescopic rod (54), and a spreading roller (52) is rotatably provided between the two sliders (55), and the slider (55) is slidably matched with the slide groove (53).
5. The high-efficiency drying device for papermaking according to claim 1, characterized in that: The drying assembly (6) comprises a blower (61) and a heating box (62) installed on the top of the drying box (1); a heating pipe (63) is provided in the heating box (62); one side of the heating box (62) is connected to the blower (61); the other side of the heating box (62) is connected to the hot air pipe (64); the ends of the hot air pipe (64) are located inside the drying box (1) and are both provided with hot air covers (65) near the top and near the bottom.
6. The high-efficiency drying device for papermaking according to claim 2, characterized in that: The hot air circulation component (7) comprises an exhaust fan (71) installed on the top of the drying box (1); the air inlet of the exhaust fan (71) is connected through an air inlet pipe (77), and the air inlet pipe (77) extends into the interior of the drying box (1) and is connected to an air suction hood (72); the air outlet of the exhaust fan (71) is connected to the lower part of the dewatering box (73) through an air outlet pipe (78); one side of the upper part of the dewatering box (73) is connected to an air distribution pipe (75) through an exhaust pipe (74); a plurality of branch pipes (76) are provided on the air distribution pipe (75); and the branch pipes (76) are connected to the rotating pipe (45).
7. The high-efficiency drying device for papermaking according to claim 6, characterized in that: The branch pipe (76) is connected to the rotating pipe (45) via a snap-on rotating joint.
8. The high-efficiency drying device for papermaking according to claim 6, characterized in that: A water receiving trough (8) is provided below the corresponding squeezing roller (4) in the drying box (1), and a first water outlet pipe (10) extending out of the drying box (1) is provided on one side of the lower part of the water receiving trough (8).
9. The high-efficiency drying device for papermaking according to claim 8, characterized in that: A demister (9) is installed in the dewatering tank (73).
10. The high-efficiency drying device for papermaking according to claim 9, characterized in that: A second water outlet pipe (11) extending to the water receiving trough (8) is provided on one side of the lower portion of the water removal box (73).