Kraft linerboard drying equipment

Abstract

The invention provides kraft linerboard drying equipment. The kraft linerboard drying equipment comprises a drying box with a cavity, a cover body arranged on the upper portion of the drying box and a plurality of conveying shafts longitudinally arranged in the cavity. A feeding channel and a discharging channel are arranged on the two opposite sides of the drying box correspondingly, and the multiple conveying shafts are used for enabling kraft linerboards to wind and pass through the drying box. A flow dividing assembly is arranged in the cover body, a heating part is arranged on the flow dividing assembly, an inlet of the flow dividing assembly is connected with a first circulating fan, and the outlet end of the first circulating fan is connected to the flow dividing assembly. A second circulating fan is arranged on the lower portion of the drying box, an air inlet of the second circulating fan communicates with the cavity, a third circulating fan is further arranged on the upper portion of the cover body, an on-off assembly is connected to an inlet pipeline of the third circulating fan, and an air inlet of the third circulating fan communicates with the flow dividing assembly. The kraft linerboard drying device can meet the moisture requirement of kraft linerboard drying, is suitable for conveying and drying rolled kraft linerboards at the same time, and avoids material waste.

Description

Technical Field

[0001] The invention relates to the technical field of kraft paper production and processing, and in particular to kraft paper drying equipment. Background Art

[0002] There are many ways to dry kraft paper. For the natural air drying method, the kraft paper is air-dried in a well-ventilated and sunny place with a clothes drying rack or rope. This method is simple and easy, but the drying time is difficult to control, and the air drying efficiency is low, which is not conducive to batch drying.

[0003] In order to increase the drying speed, the factory often uses oven drying, which is to put the kraft paper into a preheated oven, set the appropriate temperature and time, and let it dry quickly. This method has strict requirements on the humidity and temperature in the oven. Too high or too low humidity and temperature will affect the drying effect and quality of the kraft paper.

[0004] The moisture content of kraft paper directly affects the printing effect and also has a great influence on the characteristics of the paper. If the moisture content of kraft paper is too low, the paper will become brittle and generate static electricity during printing. If the moisture content of kraft paper is too high, it will make it difficult for the ink to dry when used for printing, and the printing effect cannot be guaranteed. In addition, the moisture content will also affect the paper's physical properties such as compression resistance, flexibility, quantitativeness, and folding resistance.

[0005] In the prior art, kraft paper is placed on a rotating bracket and the moisture of the kraft paper is thrown out by centrifugal force to improve the drying effect. However, when the rolled kraft paper is subjected to the drying process, it needs to be dried while being transported. This method cannot ensure that large rolls of kraft paper are effectively dried during the transportation process, and a good drying effect cannot be achieved for the rolled kraft paper. In addition, the kraft paper is wound around a fixed bracket for drying, which easily causes the wound part of the kraft paper to be curled and unusable after drying and shaping, resulting in material waste and increased production costs. Summary of the invention

[0006] In view of this, the present invention aims to propose a kraft paper drying device, which can ensure the moisture requirement of kraft paper drying and is suitable for the simultaneous transmission and drying of rolled kraft paper to avoid waste of materials.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] The kraft paper drying device comprises a drying box with a cavity, a cover body arranged on the upper part of the drying box, and a plurality of transmission shafts longitudinally arranged in the cavity;

[0009] The drying box is provided with a feed channel and a discharge channel on opposite sides thereof, and a plurality of the transmission shafts are used for the kraft paper to be wound through the drying box;

[0010] A flow diversion component is provided in the cover body, a heating part is provided on the flow diversion component, a first circulation fan is connected to the inlet of the flow diversion component, and an outlet end of the first circulation fan is connected to the flow diversion component;

[0011] A second circulation fan is provided at the lower part of the drying box, and the air inlet of the second circulation fan is connected to the cavity. A third circulation fan is also provided at the upper part of the cover body, and an on-off component is connected to the inlet pipeline of the third circulation fan, and the air inlet of the third circulation fan is connected to the diversion component.

[0012] Furthermore, the cover body is provided with two first circulation fans arranged at intervals, and the flow splitter assembly includes two airflow boxes, and a plurality of flow splitter boxes connected to the lower part of the airflow boxes;

[0013] The airflow box is extended along the X direction of the cover body, the flow diversion box is extended along the Y direction of the cover body, and the flow diversion box is communicated with the airflow box;

[0014] The two air flow box inlets are respectively connected to the corresponding outlet ends of the first circulation fans.

[0015] Furthermore, the cover body and the drying box are buckled to form a closed drying chamber, and the diversion box is provided with a diversion port communicating with the drying chamber, and the diversion port is extended along the Y direction of the cover body;

[0016] A plurality of the diversion ports are arranged directly above the transmission shaft.

[0017] Furthermore, a heat preservation layer is provided in the drying box, a plurality of the transmission shafts are sequentially arranged in a plurality of rows along the Y direction, and the transmission shafts are sequentially arranged in two columns along the X direction of the cover body;

[0018] The kraft paper is wound in a snake-like shape through each of the transmission shafts in sequence;

[0019] The heat-insulating layer is wrapped around the transmission shaft and the kraft paper.

[0020] Furthermore, the diverter box further comprises a main shell body with a W-shaped longitudinal section, and a vertical plate connected to the corner of the main shell body, and the two diverter ports are formed in the vertical plate;

[0021] The heating parts are respectively arranged between two adjacent diversion boxes, and the heating parts are connected to the airflow boxes.

[0022] Furthermore, the drying device further comprises a bracket supporting the drying box, the bracket being provided with a plurality of rotating shafts sequentially arranged along the X direction of the cover body, and a first driving assembly driving the plurality of rotating shafts to rotate;

[0023] The first driving assembly includes a first driving part connected to the bracket, a driving sprocket connected to the power output end of the first driving part, and a driven sprocket arranged at one end of the rotating shaft;

[0024] The driving sprocket and the driven sprocket are connected via a chain transmission;

[0025] Along the height direction of the bracket, a plurality of rotating shafts are arranged between the diverter box and the transmission shaft;

[0026] A swing plate is also provided on the rotating shaft along the radial direction of the rotating shaft. When the rotating shaft is driven to rotate, the swing plate rotates along the axis of the rotating shaft.

[0027] Further, the on-off assembly includes a connecting pipe connected to the outlet of the third circulating fan, and a rectangular box arranged above the connecting pipe;

[0028] The rectangular box is connected with the connecting pipe to form a ventilation cavity. The inner cavity of the rectangular box is provided with a sealing plate. The sealing plate is provided with a through shaft passing through the middle part. The through shaft is pivotally connected to the rectangular box. A second driving part is also provided on the rectangular box. A driving arm is connected to the power output end of the second driving part. The driving part is sleeved on the through shaft.

[0029] Furthermore, an air inlet pipe is provided at the air inlet of the second circulation fan, one end of the air inlet pipe penetrates the thermal insulation layer and is arranged in the cavity, and a pull-out plate is provided between the air inlet of the second circulation fan and the air inlet pipe;

[0030] The bracket is provided with a third driving part, and a power output end of the third driving part is connected to a pull-out plate, and the third driving part drives the pull-out plate to block or connect the air inlet pipe.

[0031] Furthermore, the air outlet of the second circulation fan is connected to an air storage tank, the air storage tank is provided with a connecting pipe, and the rectangular box outlet is provided with a socket pipe connected to the connecting pipe.

[0032] Furthermore, the drying device further comprises a second driving assembly connected between the cover and the drying box;

[0033] A hinged support is provided between the cover body and the drying box, and the second driving assembly includes a fourth driving part, a first support connected to the cover body, and a second support connected to the drying box;

[0034] The fixed end of the fourth driving part is pivotally connected to the second support, and the power output end of the fourth driving part is pivotally connected to the first support;

[0035] The second driving component drives the cover to close or open.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] The kraft paper drying equipment of the present invention is to wind the kraft paper on several transmission shafts in sequence, set a heating part and a first circulation fan in the cover body, set a second circulation fan in the lower part of the drying box, the first circulation fan is used to blow air to the transmission shaft, and the second circulation fan is used to extract air from the lower part of the transmission shaft, so that the circulating air is heated by the heating part and then distributed by the shunt component, and the heated warm air is evenly distributed and acts on the kraft paper, thereby avoiding damage to the kraft paper caused by high local temperature, and enabling the kraft paper to realize the drying process during the transmission process, improving the drying efficiency of the kraft paper, and realizing an automatic production line that dries while producing. At the same time, by setting a third circulation fan, cold air is intermittently input into the shunt component through the on-off component to balance the temperature in the drying box.

[0038] In addition, by providing the diversion assembly with two airflow boxes and providing a plurality of diversion boxes at the bottom of the airflow box, the air sucked in by the first circulation fan can be evenly diverted, and the diverted gas can contact the heating part more evenly, thereby increasing the balance of the heating temperature of the airflow and improving the drying effect.

[0039] In addition, the diversion port of this embodiment is arranged along the Y direction of the cover body, and multiple diversion ports are arranged perpendicular to the airflow box to further achieve the diversion uniformity of the circulating air. In addition, by arranging a heat preservation layer to cover the transmission shaft and the kraft paper, the temperature of the cavity of the drying box is further increased to be more constant, thereby improving the drying effect of the kraft paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0041] Figure 1 It is a front view schematic diagram of the kraft paper drying equipment according to an embodiment of the present invention;

[0042] Figure 2 It is a right side schematic diagram of the kraft paper drying equipment according to an embodiment of the present invention;

[0043] Figure 3 A schematic top view of a cover body according to an embodiment of the present invention;

[0044] Figure 4 It is a top view schematic diagram of the transmission shaft and kraft paper in a drying box according to an embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of the connection between the on-off assembly and the third circulation fan according to an embodiment of the present invention;

[0046] Figure 6 It is a cross-sectional schematic diagram of the diverter box according to an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of the connection structure between the second circulation fan, the pull-out plate and the third driving unit according to an embodiment of the present invention.

[0048] Description of reference numerals:

[0049] 1. Drying box; 2. Cover; 3. Transmission shaft; 4. Diverter assembly; 5. Heating unit; 6. First circulation fan; 7. Second circulation fan; 8. Third circulation fan; 9. On / off assembly; 10. Insulation layer; 11. Bracket; 12. Rotating shaft; 13. First drive assembly; 14. Air inlet pipe; 15. Pull-out plate; 16. Third drive unit; 17. Gas storage tank; 18. Connecting pipe; 19. Socket pipe; 20. Second drive assembly; 21. Kraft paper;

[0050] 101, feeding channel; 102, discharging channel; 103, drying chamber;

[0051] 401, air flow box; 402, diversion box;

[0052] 901, connecting pipe; 902, rectangular box; 903, blocking plate; 904, through-shaft; 905, second driving part; 906, driving arm;

[0053] 1301, first driving unit; 1302, driving sprocket; 1303, driven sprocket; 1304, swing plate;

[0054] 4021, diversion port; 4022, main shell; 4023, vertical plate; 4024, rectangular shell;

[0055] 2001, hinged support; 2002, fourth driving unit; 2003, first support; 2004, second support. DETAILED DESCRIPTION

[0056] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0057] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "back", etc. are based on the directions or positional relationships 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 direction, be constructed and operated in a specific direction, 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.

[0058] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connected", and "connector" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0059] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0060] This embodiment relates to a kraft paper drying device, which is generally Figures 1 to 4 As shown, the kraft paper drying equipment comprises a drying box 1 with a cavity, a cover 2 arranged on the upper part of the drying box 1, and a plurality of transmission shafts 3 longitudinally arranged in the cavity. A feed channel 101 and a discharge channel 102 are respectively arranged on opposite sides of the drying box 1, and the plurality of transmission shafts 3 are used for the kraft paper 21 to be wound through the drying box 1. A diverter assembly 4 is arranged in the cover 2, a heating part 5 is arranged on the diverter assembly 4, a first circulation fan 6 is connected to the inlet of the diverter assembly 4, and the outlet end of the first circulation fan 6 is connected to the diverter assembly 4.

[0061] At the same time, a second circulation fan 7 is provided at the lower part of the drying box 1, and the air inlet of the second circulation fan 7 is connected to the cavity. A third circulation fan 8 is also provided at the upper part of the cover body 2, and a switching component 9 is connected to the inlet pipeline of the third circulation fan 8, and the air inlet of the third circulation fan 8 is connected to the diversion component 4.

[0062] The kraft paper drying equipment of this embodiment is to wind the kraft paper 21 on several transmission shafts 3 in sequence, set a heating unit 5 and a first circulation fan 6 in the cover 2, and set a second circulation fan 7 at the lower part of the drying box 1. The first circulation fan 6 is used to blow air to the transmission shaft 3, and the second circulation fan 7 is used to draw air from the lower part of the transmission shaft, so that the circulating air is heated by the heating unit 5, and then distributed by the shunt component 4, and the heated warm air is evenly distributed and acts on the kraft paper 21, thereby avoiding damage to the kraft paper 21 caused by high local temperature, and enabling the kraft paper 21 to achieve a drying process during the transmission process, thereby improving the drying efficiency of the kraft paper 21, and realizing an automatic production line that dries while producing. At the same time, by setting a third circulation fan 8, cold air is intermittently input into the shunt component 4 through the on-off component 9 to balance the temperature in the drying box 1.

[0063] Based on the above overall introduction, an exemplary structure of the kraft paper drying equipment of this embodiment is as follows: Figures 1 to 4 As shown, the cover body 2 is formed into a rectangular box structure with an opening at the lower end, and the drying box 1 is formed into a rectangular box structure with an opening at the upper end.

[0064] As a preferred embodiment, Figures 1 to 3 As shown, there are two first circulation fans 6 arranged at intervals on the cover body 2, and the flow splitter assembly 4 includes two airflow boxes 401 and a plurality of flow splitter boxes 402 connected to the lower part of the airflow boxes 401. The airflow boxes 401 are extended along the X direction of the cover body 2, and the flow splitter boxes 402 are extended along the Y direction of the cover body 2, and the flow splitter boxes 402 are connected to the airflow boxes 401. The inlets of the two airflow boxes 401 are respectively connected to the outlet ends of the first circulation fans 6 arranged therein.

[0065] Combination Figure 1 and Figure 2 As shown, the airflow box 401 is a box body with a rectangular structure, which is formed by bending sheet metal. The airflow box 401 and the diversion box 402 are arranged vertically, and multiple diversion boxes 402 are arranged in sequence along the length direction of the airflow box 401. A rectangular opening is provided on the intersection surface of the diversion box 402 and the airflow box 401. The circulating airflow passes through the airflow box 401 into the multiple rectangular openings and enters each diversion box 402.

[0066] In this embodiment, by providing the diversion component 4 with two airflow boxes 401 and providing a plurality of diversion boxes 402 at the lower part of the airflow box 401, the air sucked in by the first circulation fan 6 can be evenly diverted, and the diverted gas can contact the heating part 5 more evenly, thereby increasing the balance of the heating temperature of the airflow and improving the drying effect.

[0067] Preferably, if Figure 1 and Figure 2As shown, the cover 2 and the drying box 1 are buckled to form a closed drying chamber 103, and the diverter box 402 is provided with a diverter port 4021 connected to the drying chamber 103, and the diverter port 4021 is extended along the Y direction of the cover 2, and a plurality of diverter ports 4021 are arranged directly above the transmission shaft 3. Figure 2 and Figure 6 As shown, the diverter box 402 of this embodiment includes a rectangular shell 4024 arranged up and down and the main shell 4022 described below, the rectangular opening is arranged at the intersection of the rectangular shell 4024 and the airflow box 401, and the rectangular shell 4024 and the main shell 4022 are both formed by bending sheet metal.

[0068] Preferably, still as Figure 2 and Figure 6 As shown, the diverter box 402 also includes a main shell 4022 with a W-shaped longitudinal section, and a vertical plate 4023 connected to the corner of the main shell 4022, and two diverter ports 4021 are formed in the vertical plate 4023. The heating part 5 is respectively arranged between two adjacent diverter boxes 402, and the heating part 5 is connected to the airflow box 401. The diverter ports 4021 of this embodiment are arranged along the Y direction of the cover body 2, and multiple diverter ports 4021 are arranged vertically to the airflow box 401 to further achieve the diversion uniformity of the circulating air.

[0069] like Figures 1 to 3 As shown, the air supply of the first circulation fan 6 and the air suction of the second circulation fan 7 form a circulating airflow flowing from top to bottom, as shown in FIG. Figure 6 As shown in the figure, the longitudinal section of the main shell 4022 gradually decreases from top to bottom as a whole, so that the circulating air flow at the diversion port 4021 has a certain extrusion pressure. The airflow with extrusion pressure is heated by the heating part 5 and flows through the kraft paper 21 wrapped around the transmission shaft 3, thereby reducing the outlet area of ​​the airflow, improving the soothingness of the airflow, and improving the drying effect of the kraft paper 21.

[0070] Furthermore, if Figures 1 to 4 As shown, a heat preservation layer 10 is also provided in the drying box 1, a plurality of transmission shafts 3 are sequentially arranged in multiple rows along the Y direction, and the transmission shafts 3 are sequentially arranged in two columns along the X direction of the cover 2, and the kraft paper 21 is sequentially wound around each transmission shaft 3 in a serpentine shape, and the heat preservation layer 10 is coated around the transmission shaft 3 and the kraft paper 21. The heat preservation layer 10 of this embodiment uses a steel plate to isolate the heat preservation space, and rock wool is arranged in the heat preservation space. By arranging the heat preservation layer 10 to be coated around the transmission shaft 3 and the kraft paper 21, the temperature of the cavity of the drying box 1 is further increased to be more constant, and the drying effect of the kraft paper 21 is improved.

[0071] like Figure 4As shown, the kraft paper is arranged in a roll and inserted on a rotating conveying shaft. The transmission shaft 3 is pivotally connected in the drying box 1. A deep groove ball bearing is provided between the transmission shaft 3 and the drying box 1. The kraft paper 21 is wound around the transmission shaft 3 in sequence, which not only improves the stretchability of the kraft paper 21 and facilitates drying, but also prevents the kraft paper from being deformed or wrinkled during drying.

[0072] like Figure 1 to Figure 2 The drying device further comprises a bracket 11 supporting the drying box 1, and the bracket 11 is provided with a plurality of rotating shafts 12 sequentially arranged along the direction of the cover body 2X, and a first driving assembly 13 driving the plurality of rotating shafts 12 to rotate. The first driving assembly 13 comprises a first driving part 1301 connected to the bracket 11, a driving sprocket 1302 connected to the power output end of the first driving part 1301, and a driven sprocket 1303 arranged at one end of the rotating shaft 12. The driving sprocket 1302 and the driven sprocket 1303 are connected by a chain transmission. Along the height direction of the bracket 11, a plurality of rotating shafts 12 are arranged between the diverter box 402 and the transmission shaft 3. Along the radial direction of the rotating shaft 12, a swing plate 1304 is also provided on the rotating shaft 12, and when the rotating shaft 12 is driven to rotate, the swing plate 1304 rotates along the axis of the rotating shaft 12.

[0073] like Figure 1 and Figure 2 As shown, the bracket 11 is welded with rectangular tubes to form a frame, and the first driving part 1301 is a servo motor. The first driving part 1301 is started to drive the plurality of rotating shafts 12 to rotate, and a swing plate 1304 is provided on the rotating shaft 12. The airflow flowing out of the diversion port 4021 is dispersed again by the rotating force of the swing plate 1304, so as to further improve the temperature stability of the drying airflow for the kraft paper 21. In addition, since the swing plate 1304 is used to fan the airflow of the airflow port, part of the airflow is returned to the heating part 5 for heating. Through the continuous rotation of the swing plate 1304, the airflow in the space above the transmission shaft 3 and the lower part of the diversion box 402 is continuously increased in temperature, and the airflow with increased temperature is mixed with the newly flowing airflow, and the airflow is mixed by the fanning force, so as to increase the temperature uniformity of the mixed airflow.

[0074] In order to prevent the drying temperature of the kraft paper 21 from being too high, a temperature sensor can be set on the upper part of the transmission shaft 3 to obtain the air flow temperature there. The heating part 5 of this embodiment adopts an electric heating tube. If the temperature value monitored by the temperature sensor is too high, the control system controls the heating part 5 to reduce the heating power. The control system of this embodiment adopts a control system such as PLC, which will not be elaborated here.

[0075] like Figure 5As shown, the on-off assembly 9 includes a connecting pipe 901 connected to the outlet of the third circulating fan 8, and a rectangular box 902 arranged above the connecting pipe 901. The rectangular box 902 is connected to the connecting pipe 901 to form a ventilation cavity, and the inner cavity of the rectangular box 902 is provided with a blocking plate 903, and the blocking plate 903 is provided with a through shaft 904 through the middle, and the through shaft 904 is pivotally connected to the rectangular box 902; the rectangular box 902 is also provided with a second driving part 905, and the power output end of the second driving part 905 is connected to a driving arm 906, and the driving part is sleeved on the through shaft 904.

[0076] Still Figure 5 As shown, the second driving part 905 adopts a telescopic cylinder. The second driving part 905 telescopes to drive the driving part to rotate along the through shaft 904. The blocking plate is fixedly connected to the through shaft 904. When the through shaft 904 rotates, the blocking plate flips 90 degrees relative to the rectangular box 902. At this time, the outlet of the third circulating fan 8 is connected to the external atmosphere, and cold air can quickly enter, and work together with the above-mentioned heating part 5 to reduce the power, thereby reducing the temperature of the air flow flowing into the kraft paper 21, thereby avoiding the kraft paper 21 from breaking due to drying due to excessive temperature.

[0077] In addition, if Figure 2 As shown, an air inlet 14 is provided at the air inlet of the second circulation fan 7, one end of the air inlet 14 penetrates the thermal insulation layer 10 and is provided in the cavity, and a pull-out plate 15 is provided between the air inlet of the second circulation fan 7 and the air inlet 14. A third driving unit 16 is provided on the bracket 11, and the power output end of the third driving unit 16 is connected with the pull-out plate 15, and the third driving unit 16 drives the pull-out plate 15 to block or connect the air inlet 14. The third driving unit 16 of this embodiment adopts a telescopic cylinder, and when a certain time is required for drying, the pull-out plate 15 blocks the air inlet of the second circulation fan 7. When the temperature in the drying box 1 is high, the pull-out plate 15 is away from the air inlet 14 and is connected to the air inlet of the second circulation fan 7. By providing the third driving unit 16 and the pull-out plate 15, the flexibility of the kraft paper drying equipment can be improved.

[0078] Furthermore, if Figure 3 and Figure 7 As shown, the air outlet of the second circulation fan 7 is connected to a gas storage tank 17, the gas storage tank 17 is provided with a connecting pipe 18, and the outlet of the rectangular box 902 is provided with a bell-and-spigot pipe 19 connected to the connecting pipe 18. By providing the connecting pipe 18 and the bell-and-spigot pipe 19, the gas flowing out of the drying box 1 can be circulated to the inlet of the third circulation fan 8. Since the gas temperature in the connecting pipe 18 is relatively high, the heating power of the heating part 5 can be reduced, the heating energy can be recycled, and the energy consumption cost can be reduced.

[0079] Preferably, if Figure 1As shown, the drying device further includes a second drive assembly 20 connected between the cover body 2 and the drying box 1. A hinged support 2001 is provided between the cover body 2 and the drying box 1, and the second drive assembly 20 includes a fourth drive unit 2002, a first support 2003 connected to the cover body 2, and a second support 2004 connected to the drying box 1. The fixed end of the fourth drive unit 2002 is pivotally connected to the second support 2004, and the power output end of the fourth drive unit 2002 is pivotally connected to the first support 2003. The second drive assembly 20 drives the cover body 2 to buckle or open.

[0080] As Figure 1 As shown, in this embodiment, a second driving assembly 20 is provided, and a fourth driving unit 2002 adopts a telescopic cylinder. When the equipment needs to be repaired, parts need to be replaced, or problems such as paper jam occur, the fourth driving unit 2002 drives the cover body 2 to flip and open relative to the drying box 1, thereby reducing labor and improving equipment maintenance efficiency.

[0081] 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 principle 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 box (1) having a cavity, a cover (2) arranged on the upper part of the drying box (1), and a plurality of transmission shafts (3) longitudinally arranged in the cavity; The drying box (1) is provided with a feeding channel (101) and a discharging channel (102) on opposite sides thereof, and a plurality of the transmission shafts (3) are used for winding the kraft paper (21) through the drying box (1); A flow dividing component (4) is provided inside the cover body (2), a heating portion (5) is provided on the flow dividing component (4), an inlet of the flow dividing component (4) is connected to a first circulation fan (6), and an outlet end of the first circulation fan (6) is connected to the flow dividing component (4); A second circulation fan (7) is provided at the lower part of the drying box (1), and an air inlet of the second circulation fan (7) is communicated with the cavity. A third circulation fan (8) is also provided at the upper part of the cover body (2), and an on-off assembly (9) is connected to the inlet pipeline of the third circulation fan (8), and an air inlet of the third circulation fan (8) is communicated with the diversion assembly (4).

2. The kraft paper drying equipment according to claim 1, characterized in that: The cover body (2) is provided with two first circulation fans (6) arranged at intervals, and the flow splitter assembly (4) comprises two airflow boxes (401) and a plurality of flow splitter boxes (402) connected to the lower part of the airflow boxes (401); The airflow box (401) is extended along the X direction of the cover body (2), the flow distribution box (402) is extended along the Y direction of the cover body (2), and the flow distribution box (402) is connected to the airflow box (401); The inlets of the two air flow boxes (401) are respectively connected to the outlet ends of the first circulation fans (6) correspondingly arranged thereto.

3. The kraft paper drying equipment according to claim 2 is characterized in that: The cover body (2) and the drying box (1) are buckled together to form a closed drying chamber (103); the diversion box (402) is provided with a diversion port (4021) communicating with the drying chamber (103); the diversion port (4021) is extended along the Y direction of the cover body (2); A plurality of the diversion ports (4021) are arranged directly above the transmission shaft (3).

4. The kraft paper drying equipment according to claim 3 is characterized in that: The drying box (1) is further provided with a heat-insulating layer (10), a plurality of the transmission shafts (3) are sequentially arranged in a plurality of rows along the Y direction, and the transmission shafts (3) are sequentially arranged in two columns along the X direction of the cover body (2); The kraft paper (21) is wound in a snake-like manner through each of the transmission shafts (3) in sequence; The heat-insulating layer (10) is wrapped around the transmission shaft (3) and the kraft paper (21).

5. The kraft paper drying equipment according to claim 4, characterized in that: The diverter box (402) further comprises a main shell (4022) having a W-shaped longitudinal section, and a vertical plate (4023) connected to a corner of the main shell (4022), and the two diverter ports (4021) are formed in the vertical plate (4023); The heating part (5) is respectively arranged between two adjacent diversion boxes (402), and the heating part (5) is connected to the airflow box (401).

6. The kraft paper drying equipment according to claim 5, characterized in that: The drying device further comprises a bracket (11) for supporting the drying box (1), the bracket (11) being provided with a plurality of rotating shafts (12) sequentially arranged along the X direction of the cover body (2), and a first driving assembly (13) for driving the plurality of rotating shafts (12) to rotate; The first driving assembly (13) comprises a first driving part (1301) connected to the bracket (11), a driving sprocket (1302) connected to the power output end of the first driving part (1301), and a driven sprocket (1303) arranged at one end of the rotating shaft (12); The driving sprocket (1302) and the driven sprocket (1303) are connected via a chain transmission; Along the height direction of the bracket (11), a plurality of rotating shafts (12) are arranged between the diverter box (402) and the transmission shaft (3); A swing plate (1304) is also provided on the rotating shaft (12) along the radial direction of the rotating shaft (12); when the rotating shaft (12) is driven to rotate, the swing plate (1304) rotates along the axis of the rotating shaft (12).

7. The kraft paper drying equipment according to claim 6, characterized in that: The on-off assembly (9) comprises a connecting pipe (901) connected to the outlet of the third circulating fan (8), and a rectangular box (902) arranged above the connecting pipe (901); The rectangular box (902) is connected to the connecting pipe (901) to form a ventilation cavity. The inner cavity of the rectangular box (902) is provided with a sealing plate (903). The sealing plate (903) is provided with a through shaft (904) penetrating through the middle. The through shaft (904) is pivotally connected to the rectangular box (902). The rectangular box (902) is also provided with a second driving part (905). The power output end of the second driving part (905) is connected to a driving arm (906). The driving part is sleeved on the through shaft (904).

8. The kraft paper drying equipment according to claim 7, characterized in that: An air inlet pipe (14) is provided at the air inlet of the second circulation fan (7), one end of the air inlet pipe (14) passes through the thermal insulation layer (10) and is arranged in the cavity, and a pull-out plate (15) is provided between the air inlet of the second circulation fan (7) and the air inlet pipe (14); The bracket (11) is provided with a third driving part (16), the pull-out plate (15) is connected to the power output end of the third driving part (16), and the third driving part (16) drives the pull-out plate (15) to block or connect the air inlet pipe (14).

9. The kraft paper drying equipment according to claim 7, characterized in that: The air outlet of the second circulation fan (7) is connected to an air storage tank (17), the air storage tank (17) is provided with a connecting pipe (18), and the outlet of the rectangular box (902) is provided with a socket pipe (19) connected to the connecting pipe (18).

10. The kraft paper drying equipment according to claim 1, characterized in that: The drying device further comprises a second driving assembly (20) connected between the cover body (2) and the drying box (1); A hinged support (2001) is provided between the cover body (2) and the drying box (1); the second driving assembly (20) comprises a fourth driving part (2002), a first support (2003) connected to the cover body (2), and a second support (2004) connected to the drying box (1); The fixed end of the fourth driving part (2002) is pivotally connected to the second support (2004), and the power output end of the fourth driving part (2002) is pivotally connected to the first support (2003); The second driving component (20) drives the cover body (2) to close or open.

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