A drying system for offset paper manufacturing

Abstract

A drying system for offset paper manufacturing relates to the technical field of papermaking equipment, comprising a horizontally arranged support base, two parallel support plates vertically fixedly arranged on the top of the support base, two drying mechanisms respectively drying the upper and lower surfaces of paper sheets arranged in parallel along the length direction between the two support plates, two guide rollers for guiding paper sheets arranged between the two drying mechanisms, the two ends of the guide rollers correspondingly connected to the two support plates for rotation, two heating components arranged on the top of the support base, the two drying mechanisms correspondingly connected to the two heating components; the drying mechanism comprises two rotating circular plates arranged for rotation along a horizontal line, the opposite ends of the two rotating circular plates are coaxially fixed with rotating tubes. The present invention solves the problems of uneven hot air flow distribution and high internal environmental air humidity in the existing drying equipment for offset paper manufacturing, resulting in poor paper sheet drying effect; and high energy consumption, resulting in high paper sheet drying cost.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking equipment, in particular to a drying system for offset paper manufacturing. Background Art

[0002] Offset printing paper is one of the typical representative paper types for cultural and printing paper. It is generally used for color printing on offset printing machines. Offset paper requires a smooth and delicate surface, low elasticity, tight and opaque texture, good whiteness, strong water resistance, good uniformity, surface strength and opacity, high bulk and stiffness to meet high printing adaptability requirements. Offset paper is widely used in high-end books, textbooks, teaching materials and tutoring materials, and is also used for printing picture albums, color illustrations, trademarks, covers and books. In the papermaking process, the paper must be dried. The so-called drying of paper refers to heating the paper through specific drying equipment to vaporize the water in the paper, further remove the remaining water after pressing, so that the paper reaches a certain dryness and meets the production quality requirements.

[0003] The existing drying equipment for offset paper manufacturing has gradually exposed its shortcomings during use, mainly in the following aspects: First, the hot air flow is unevenly distributed and the internal ambient air humidity is high, which affects the drying effect of the paper sheets. Specifically, the drying equipment blows hot air to the upper and lower surfaces of the paper sheets through a number of air jets to dry the paper sheets. The ejected hot air flow contacts the surface of the paper sheets and diffuses to the surroundings. The farther the surface of the paper sheets is from the diffusion center, the less hot air flow there is. Therefore, the hot air flow is unevenly distributed on the surface of the paper sheets. After the hot air flow contacts the paper sheets, the moisture in the paper sheets evaporates and mixes with the hot air flow to form high-humidity hot exhaust gas. The high-humidity hot exhaust gas gathers inside the equipment, resulting in high humidity in the internal ambient air of the equipment, which is not conducive to the drying of the paper sheets. The above two factors both affect the drying effect of the paper sheets.

[0004] Second, the equipment has high energy consumption, resulting in high drying costs for paper sheets. Specifically, during the process of drying paper sheets, the equipment absorbs and heats external air to form a hot air flow, which is then sprayed onto the paper sheets through the air nozzles for drying. The difference between the external air and the drying temperature is large, and the equipment needs to operate at high power to quickly heat the temperature of the external air to the drying temperature. Therefore, the equipment has high energy consumption, resulting in high drying costs for paper sheets.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0006] In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide a drying system for offset paper manufacturing, which can not only make the hot air flow pass through the surface of the paper sheet evenly, but also dry the high-humidity hot exhaust gas generated during the drying process, so that the interior of the equipment maintains a low-humidity drying environment, thereby improving the drying effect on the paper sheet; The equipment can also reuse the high-humidity hot exhaust gas generated during the drying process, reducing the operating energy consumption of the equipment and lowering the drying cost of paper sheets.

[0007] To solve the above problems, the present invention provides the following technical solutions: A drying system for offset paper manufacturing, comprising a horizontally arranged support base, two support plates arranged in parallel are vertically fixed on the top of the support base, two drying mechanisms for drying the upper surface and the lower surface of the paper sheets are arranged in parallel along the length direction between the two support plates, two guide rollers for guiding the paper sheets are arranged between the two drying mechanisms, the two ends of the guide rollers are correspondingly connected to the two support plates for rotation, two heating assemblies are arranged on the top of the support base, and the two drying mechanisms are correspondingly connected to the two heating assemblies; The drying mechanism comprises two rotating circular plates arranged to rotate along a horizontal line, the ends of the two rotating circular plates facing away from each other are coaxially fixed with rotating tubes, the two rotating tubes respectively penetrate two supporting plates and are rotatably connected to the supporting plates, a number of horizontally arranged connecting plates are evenly distributed along the circumferential direction between the two rotating circular plates, the two ends of the connecting plates are correspondingly fixedly connected to the two rotating circular plates, a sliding arc box coaxially arranged with the rotating circular plates is provided between two adjacent connecting plates, the opposite ends of the sliding arc box are horizontally slidably connected to the two adjacent connecting plates, the outer surfaces of the sliding arc box and the connecting plate are flush with the outer surfaces of the rotating circular plates, Two outer partitions are fixedly provided on the inner wall of the sliding arc box, and the two outer partitions divide the inner space of the sliding arc box into a left air chamber, a middle air chamber and a right air chamber in a clockwise direction. The middle air chamber is provided with an inner arc box, and an inner partition is fixedly provided on the inner wall of the inner arc box, and the inner partition divides the inner space of the inner arc box into an upper air chamber and a lower air chamber. The left air chamber is connected to the lower air chamber, and the right air chamber is connected to the upper air chamber through a plurality of ventilation hoses. The outer wall of the sliding arc box is evenly distributed with a plurality of arc drying grooves along the axial direction, and the bottom of the arc drying groove is penetrated with a plurality of through holes connected to the left air chamber or the right air chamber. The cam is connected to the inner tube by a thread-connected hole, and the two ends of the cam are connected to the outer tube by a thread-connected hole. A driving component for controlling the two adjacent sliding arc boxes to slide toward or away from each other is provided between the two rotating circular plates. A rotating shaft arranged to rotate along a horizontal line is provided at positions on both sides above or below the rotating circular plates. Both ends of the rotating shaft are correspondingly connected to the two support plates for rotation. Two positioning plates are fixedly mounted on the rotating shaft. A limiting roller arranged to rotate along a horizontal line is provided between the two positioning plates. Both ends of the limiting roller are correspondingly connected to the two positioning plates for rotation.

[0008] As an optimized solution, a ventilation groove is provided on the top of the connecting plate along its length direction, and an air inlet groove and an exhaust groove are respectively provided inside the connecting plate, the air inlet groove and the exhaust groove are correspondingly connected with the two ends of the ventilation groove, and an air inlet square tube and an exhaust square tube are fixedly provided on the bottom of the connecting plate, the two ends of the exhaust square tube are correspondingly connected with the exhaust groove and the inner cavity of the outer rotating tube, and the two ends of the air inlet square tube are correspondingly connected with the air inlet groove and the inner cavity of the inner rotating tube.

[0009] As an optimized solution, the heating assembly includes a heating box and a drying box which are connected in sequence, a plurality of electric heating wires are evenly distributed in the heating box, a plurality of detachable drying plates are inserted in the drying box, the other end of the external fixed tube is sealed, the other end of the internal fixed tube passes through the sealed end of the external fixed tube and is connected to the heating box, a circulating fan is fixed on the top of the supporting base, and the air inlet and exhaust port of the circulating fan are correspondingly connected to the external fixed tube and the drying box through connecting pipes.

[0010] As an optimized solution, the driving assembly includes a horizontally fixed fixed block, on which are mounted two driving circular plates that are slid toward or away from each other. A fixed arc plate is fixed to the bottom of the sliding arc box, and two adjacent fixed arc plates are respectively rotated and embedded in the outer walls of the two driving circular plates.

[0011] As an optimized solution, two fixed U-shaped plates are fixedly provided at the opposite ends of the two support plates, and a fixed column is fixedly provided at the end of the fixed block, one end of the fixed column passes through the rotating circular plate and the rotating tube in sequence and is fixedly connected to the fixed U-shaped plate on one of the support plates, the fixed column is rotatably connected to the rotating circular plate and the rotating tube, and the external fixed tube is fixedly inserted into the fixed U-shaped plate on the other support plate.

[0012] As an optimized solution, the outer walls of the two rotating tubes on one of the support plates are fixedly mounted with driven wheels, and two driving wheels are rotatably provided at the end of the support plate, and the two driving wheels are connected to the two driven wheels respectively through transmission belts.

[0013] As an optimized solution, two drive motors are fixedly provided at the end of one of the support plates, and the output ends of the two drive motors both pass through the support plate and are fixedly connected to the two drive wheels respectively.

[0014] As an optimized solution, four servo motors are fixedly provided at the end of another support plate, and the output ends of the four servo motors all pass through the support plate and are fixedly connected to the four rotating shafts accordingly.

[0015] As an optimized solution, a horizontally arranged two-way telescopic cylinder is fixedly provided on the top and the bottom of the fixed block, and two telescopic ends of the two-way telescopic cylinder are fixedly connected to two driving circular plates respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When drying paper sheets, the paper sheets are passed through the two limit rollers at the bottom, wrapped with one set of sliding arc boxes, and then passed through the two limit rollers at the bottom, and then passed through the two guide rollers, and the paper sheets are passed through the two limit rollers at the top, and wrapped with another set of sliding arc boxes, and then passed through the two limit rollers at the top. The servo motor drives the rotating shaft to rotate, and then drives the positioning plate and the limit roller to rotate. The limit roller rotates in the direction close to the rotating circular plate until the paper sheets cover the two sets of sliding arc boxes with a large area, and pass through the winding device. The paper sheet is pulled by the device. At the same time, the driving motor drives the driving wheel to rotate, and then drives the transmission belt, the driven wheel and the rotating tube to rotate, thereby driving the rotating circular plate, the connecting plate and the sliding arc box to rotate. The rotating speed of the rotating circular plate is the same as the moving speed of the paper sheet. The circulating fan transports the air, and the air passes through the drying box and the heating box in turn. The drying plate and the electric heating wire dry and heat the air respectively. The hot air enters the inner rotating tube through the inner fixed tube. Part of the hot air in the inner rotating tube enters the upper air chamber through the inner ventilation square tube, and then enters the right air chamber through the ventilation hose. The hot air in the right air chamber is discharged through the through hole above it. Under the limit of the limit roller, the paper sheet is in close contact with the outer wall of the sliding arc box. At the same time, under the suction of the circulating fan, the hot air discharged from the right air chamber passes through the arc drying slot and enters the left air chamber. The hot air in the left air chamber enters the lower air chamber through the ventilation hose, and then passes through the external ventilation square tube, the external rotating tube, the external fixed tube and the connecting tube in turn to enter the circulating fan and form a cycle. During the rotation of the rotating circular plate, the two telescopic ends of the two-way telescopic cylinder periodically extend and shorten. When the two extension ends of the two-way telescopic cylinder are When the contraction end is extended or shortened, the two driving circular plates slide back to back or relative to each other. Driven by the fixed arc plate, the two adjacent sliding arc boxes slide back to back or relative to each other. At this time, the hot air flowing through the arc drying trough can dry different areas in the width direction of the paper sheet. During the entire drying process, the hot air can evenly pass through the surface of the paper sheet to dry the paper sheet, and the high-humidity hot exhaust gas generated during the drying process can be absorbed in real time to the outside of the arc drying trough for drying treatment. Therefore, the interior of the equipment can maintain a low-humidity drying environment, thereby improving the drying effect of the paper sheet; 2. During the rotation of the rotating circular plate, part of the hot air in the inner rotating tube enters the ventilation groove through the air inlet square tube and the air inlet groove. When the paper sheet is in close contact with the outer wall of the connecting plate, the hot air flows through the ventilation groove under the suction of the circulating fan and dries the area between the two sliding arc boxes. The high-humidity hot exhaust gas after drying enters the outer rotating tube through the exhaust groove and the exhaust square tube, and dries the area between the two sliding arc boxes through the ventilation groove, which reduces the blind area of ​​drying the paper sheet, speeds up the drying speed of the paper sheet, and further improves the drying effect of the paper sheet. 3. Under the suction of the circulating fan, the high-humidity hot exhaust gas generated during the paper drying process enters the external rotating tube, and passes through the external fixed tube, the connecting tube and the circulating fan in turn, and then enters the drying box for drying. The dried gas enters the heating box for heating. The high-humidity hot exhaust gas can be reused after drying, and the temperature of this part of the gas itself is relatively high. Therefore, the energy consumption required by the electric heating wire to heat this part of the gas is low, thereby reducing the operating energy consumption of the equipment and reducing the drying cost of the paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure between two support plates of the present invention; Figure 3 It is a structural schematic diagram of the rotating circular plate, the connecting plate and the sliding arc box of the present invention; Figure 4 It is a schematic diagram of the structure inside the sliding arc box of the present invention; Figure 5 It is a schematic structural diagram of the outer wall of the sliding arc box of the present invention; Figure 6 This is a schematic diagram of the structure inside the built-in arc box of the present invention; Figure 7 It is a schematic diagram of the structure inside the external fixed tube and the external rotating tube of the present invention; Figure 8 It is a schematic diagram of the structure inside the outer ventilation square tube and the inner ventilation square tube of the present invention; Fig. 9 It is a schematic diagram of the structure of the external ventilation square tube and the sliding arc box of the present invention; Fig.10 It is a schematic diagram of the structure of the driving assembly of the present invention; Fig.11 It is a schematic diagram of the structure inside the connecting plate of the present invention; Fig.12 It is a schematic structural diagram of the heating component of the present invention.

[0019] In the figure: 1-heating component; 2-support plate; 3-rotating shaft; 4-support base; 5-drying mechanism; 6-positioning plate; 7-limiting roller; 8-servo motor; 9-material guide roller; 10-fixed U-shaped plate; 11-sliding arc box; 12-rotating circular plate; 13-connecting plate; 14-arc drying trough; 15-through hole; 16-rotating tube; 17-external ventilation square tube; 18-left air chamber; 19-external partition; 20-ventilation hose; 21-upper air chamber; 22-built-in arc box; 23-inner ventilation square tube; 24-inner partition; 25-lower air chamber; 26-middle air chamber; 27-right air chamber chamber; 28-exhaust slot; 29-ventilation slot; 30-intake slot; 31-intake square tube; 32-inner fixed tube; 33-outer fixed tube; 34-inner rotating tube; 35-outer rotating tube; 36-exhaust square tube; 37-paper sheet; 38-driven wheel; 39-driving motor; 40-transmission belt; 41-driving wheel; 42-connecting pipe; 43-electric heating wire; 44-heating box; 45-drying plate; 46-drying box; 47-circulating fan; 48-driving assembly; 49-fixed column; 50-driving circular plate; 51-fixed block; 52-two-way telescopic cylinder; 53-fixed arc plate. DETAILED DESCRIPTION

[0020] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0021] like Figures 1 to 12 As shown, a drying system for offset paper manufacturing comprises a horizontally arranged support base 4, two support plates 2 arranged in parallel are vertically fixed on the top of the support base 4, two drying mechanisms 5 for drying the upper surface and the lower surface of a paper sheet 37 are arranged in parallel along the length direction between the two support plates 2, two guide rollers 9 for guiding the paper sheet 37 are arranged between the two drying mechanisms 5, and the two ends of the guide rollers 9 are correspondingly connected to the two support plates 2 for rotation, and two heating components 1 are arranged on the top of the support base 4, and the two drying mechanisms 5 are correspondingly connected to the two heating components 1; The drying mechanism 5 includes two rotating circular plates 12 arranged to rotate along a horizontal line, and the opposite ends of the two rotating circular plates 12 are coaxially fixed with rotating tubes 16. The two rotating tubes 16 respectively penetrate the two supporting plates 2 and are rotatably connected to the supporting plates 2. A number of horizontally arranged connecting plates 13 are evenly distributed along the circumferential direction between the two rotating circular plates 12. The two ends of the connecting plate 13 are correspondingly fixedly connected to the two rotating circular plates 12. A sliding arc box 11 coaxially arranged with the rotating circular plates 12 is provided between two adjacent connecting plates 13. The opposite ends of the sliding arc box 11 are horizontally slidably connected to the two adjacent connecting plates 13. The outer surfaces of the sliding arc box 11 and the connecting plate 13 are flush with the outer surfaces of the rotating circular plates 12. Two outer partitions 19 are fixedly provided on the inner wall of the sliding arc box 11, and the two outer partitions 19 divide the inner space of the sliding arc box 11 into a left air chamber 18, a middle air chamber 26 and a right air chamber 27 in a clockwise direction. A built-in arc box 22 is provided in the middle air chamber 26, and an inner partition 24 is fixedly provided on the inner wall of the built-in arc box 22. The inner partition 24 divides the inner space of the built-in arc box 22 into an upper air chamber 21 and a lower air chamber 25. The left air chamber 18 is connected to the lower air chamber 25 and the right air chamber 27 is connected to the upper air chamber 21 through a plurality of ventilation hoses 20. The outer wall of the sliding arc box 11 is evenly distributed with a plurality of arc drying grooves 14 along the axial direction. The bottom of the arc drying groove 14 is penetrated with a plurality of through holes 15 connected to the left air chamber 18 or the right air chamber 27. An outer fixed tube 33 is fixedly arranged coaxially between the two rotating circular plates 12, and an inner fixed tube 32 is coaxially arranged in the outer fixed tube 33. The same end of the outer fixed tube 33 and the inner fixed tube 32 is respectively provided with an outer rotating tube 35 and an inner rotating tube 34 which are rotatably sealed and connected. One of the ports of the outer rotating tube 35 is sealed, and one of the ports of the inner rotating tube 34 is fixedly connected to the sealed end of the outer rotating tube 35. The other ends of the outer fixed tube 33 and the inner fixed tube 32 pass through the rotating circular plate 12 and the rotating tube 16 in sequence and are connected to the heating component 1. The outer fixed tube 33 and the rotating tube 16 are connected to the heating component 1. The rotating circular plate 12 and the rotating tube 16 are rotatably connected, and the outer wall of the outer rotating tube 35 is uniformly distributed with a plurality of outer ventilation square tubes 17 connected with its inner cavity along the circumferential direction. One of the ports of the outer ventilation square tube 17 passes through the sliding arc box 11 and the built-in arc box 22 in turn and is connected with the lower air chamber 25. The outer ventilation square tube 17 is slidably connected with the sliding arc box 11, and the outer ventilation square tube 17 is fixedly connected with the built-in arc box 22. An inner ventilation square tube 23 is arranged inside the outer ventilation square tube 17, and the two ends of the inner ventilation square tube 23 are correspondingly connected with the upper air chamber 21 and the inner cavity of the inner rotating tube 34. A driving assembly 48 for controlling the two adjacent sliding arc boxes 11 to slide toward or away from each other is provided between the two rotating circular plates 12. A rotating shaft 3 rotatably arranged along a horizontal line is provided on both sides above or below the rotating circular plate 12. Both ends of the rotating shaft 3 are rotatably connected to the two support plates 2. Two positioning plates 6 are fixedly mounted on the rotating shaft 3. A limiting roller 7 rotatably arranged along a horizontal line is provided between the two positioning plates 6. Both ends of the limiting roller 7 are rotatably connected to the two positioning plates 6.

[0022] A ventilation groove 29 is provided at the top of the connecting plate 13 along its length direction, and an air intake groove 30 and an exhaust groove 28 are respectively provided inside the connecting plate 13. The air intake groove 30 and the exhaust groove 28 are correspondingly connected to the two ends of the ventilation groove 29. An air intake square tube 31 and an exhaust square tube 36 are fixedly provided at the bottom of the connecting plate 13. The two ends of the exhaust square tube 36 are correspondingly connected to the exhaust groove 28 and the inner cavity of the outer rotating tube 35, and the two ends of the air intake square tube 31 are correspondingly connected to the air intake groove 30 and the inner cavity of the inner rotating tube 34.

[0023] The heating assembly 1 includes a heating box 44 and a drying box 46 which are connected in sequence. A plurality of electric heating wires 43 are evenly distributed in the heating box 44. A plurality of detachable drying plates 45 are inserted in the drying box 46. The other end of the external fixed tube 33 is sealed. The other end of the internal fixed tube 32 passes through the sealed end of the external fixed tube 33 and is connected to the heating box 44. A circulating fan 47 is fixedly provided on the top of the support base 4. The air inlet and exhaust port of the circulating fan 47 are connected to the external fixed tube 33 and the drying box 46 through the connecting tube 42.

[0024] The driving assembly 48 includes a horizontally fixed fixed block 51, on which two driving circular plates 50 are mounted for sliding toward or away from each other. A fixed arc plate 53 is fixed to the bottom of the sliding arc box 11, and two adjacent fixed arc plates 53 are respectively rotatably embedded in the outer walls of the two driving circular plates 50.

[0025] Two fixed U-shaped plates 10 are fixedly provided at the opposite ends of the two support plates 2, and a fixed column 49 is fixedly provided at the end of the fixed block 51. One end of the fixed column 49 passes through the rotating circular plate 12 and the rotating tube 16 in sequence and is fixedly connected to the fixed U-shaped plate 10 on one of the support plates 2. The fixed column 49 is rotatably connected to the rotating circular plate 12 and the rotating tube 16, and the external fixed tube 33 is fixedly inserted into the fixed U-shaped plate 10 on the other support plate 2.

[0026] The outer walls of the two rotating tubes 16 on one of the support plates 2 are fixedly sleeved with driven wheels 38, and two driving wheels 41 are rotatably provided at the end of the support plate 2. The two driving wheels 41 are connected to the two driven wheels 38 via a transmission belt 40.

[0027] Two driving motors 39 are fixedly provided at the end of one of the supporting plates 2 , and the output ends of the two driving motors 39 both pass through the supporting plate 2 and are fixedly connected to the two driving wheels 41 correspondingly.

[0028] Four servo motors 8 are fixedly mounted on the end of another support plate 2 . The output ends of the four servo motors 8 pass through the support plate 2 and are fixedly connected to the four rotating shafts 3 respectively.

[0029] A horizontally arranged two-way telescopic cylinder 52 is fixedly disposed on the top and bottom of the fixed block 51 , and two telescopic ends of the two-way telescopic cylinder 52 are fixedly connected to the two driving circular plates 50 .

[0030] The working principle of this device is: When drying the paper sheet 37, the paper sheet 37 is passed through between the two limiting rollers 7 located at the bottom, covers one set of sliding arc boxes 11, and then passes through between the two limiting rollers 7 located at the bottom, and then passes through two guide rollers 9, and the paper sheet 37 is passed through between the two limiting rollers 7 located at the top, covers another set of sliding arc boxes 11, and then passes through between the two limiting rollers 7 located at the top. The servo motor 8 drives the rotating shaft 3 to rotate, and then drives the positioning plate 6 and the limiting roller 7 to rotate. The limiting roller 7 rotates in the direction close to the rotating circular plate 12 until the paper sheet 37 covers a large area of ​​the two sets of sliding arc boxes 11, and the paper sheet 37 is pulled by the winding device. At the same time, the driving motor 39 drives the driving wheel 41 to rotate, and then drives the transmission belt 40, the driven wheel 38 and the rotating tube 16 to rotate, thereby driving the rotating circular plate 12, the connecting plate 13 and the sliding arc box 11 to rotate. The rotating speed of the rotating circular plate 12 is the same as the moving speed of the paper sheet 37. The circulating fan 47 transports the air, and the air passes through the drying box 46 and the heating box 44 in turn. The drying plate 45 and the electric heating wire 43 dry and heat the air respectively. The hot air enters the inner rotating tube 34 through the inner fixed tube 32. Part of the hot air in the inner rotating tube 34 enters the upper air chamber 21 through the inner ventilation square tube 23, and then passes through the ventilation hose 20 The hot air in the right air chamber 27 is discharged through the through hole 15 above the right air chamber 27. Under the limit of the limit roller 7, the paper sheet 37 is in close contact with the outer wall of the sliding arc box 11. At the same time, under the suction of the circulating fan 47, the hot air discharged from the right air chamber 27 passes through the arc drying groove 14 and enters the left air chamber 18. The hot air in the left air chamber 18 enters the lower air chamber 25 through the ventilation hose 20, and then passes through the outer ventilation square tube 17, the outer rotating tube 35, the outer fixed tube 33 and the connecting tube 42 in sequence to enter the circulating fan 47 and form a cycle. During the rotation of the rotating circular plate 12, the two telescopic ends of the two-way telescopic cylinder 52 are periodically extended and contracted. When the two telescopic ends of the two-way telescopic cylinder 52 are extended or shortened, the two driving circular plates 50 slide back to back or relative to each other, and driven by the fixed arc plate 53, the two adjacent sliding arc boxes 11 slide back to back or relative to each other. At this time, the hot air flowing through the arc drying groove 14 can dry different areas of the paper sheet 37 in the width direction. During the entire drying process, the hot air can evenly pass through the surface of the paper sheet 37 to dry the paper sheet 37, and the high-humidity hot exhaust gas generated during the drying process can be absorbed in real time to the outside of the arc drying groove 14 for drying treatment. Therefore, the interior of the equipment can maintain a low-humidity drying environment, thereby improving the drying effect on the paper sheet 37; During the rotation of the rotating circular plate 12, part of the hot air in the inner rotating tube 34 enters into the ventilation groove 29 through the air inlet square tube 31 and the air inlet groove 30. When the paper sheet 37 is in close contact with the outer wall of the connecting plate 13, the hot air flows through the ventilation groove 29 under the suction of the circulating fan 47 and dries the area of ​​the paper sheet 37 between the two sliding arc boxes 11. The high-humidity hot exhaust gas after drying enters into the outer rotating tube 35 through the exhaust groove 28 and the exhaust square tube 36, and dries the area of ​​the paper sheet 37 between the two sliding arc boxes 11 through the ventilation groove 29, thereby reducing the blind area of ​​drying the paper sheet 37, accelerating the drying speed of the paper sheet 37, and further improving the drying effect of the paper sheet 37. Under the suction of the circulating fan 47, the high-humidity hot exhaust gas generated during the drying process of the paper sheets 37 enters the outer rotating tube 35, and passes through the outer fixed tube 33, the connecting tube 42 and the circulating fan 47 in sequence, and then enters the drying box 46 for drying. The dried gas enters the heating box 44 for heating. The high-humidity hot exhaust gas can be reused after drying, and this part of the gas itself has a high temperature. Therefore, the energy consumption required for the electric heating wire 43 to heat this part of the gas is low, thereby reducing the operating energy consumption of the equipment and reducing the drying cost of the paper sheets 37.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A drying system for offset paper manufacturing, characterized in that: The invention comprises a support base (4) arranged horizontally, two support plates (2) arranged in parallel are fixedly arranged vertically on the top of the support base (4), two drying mechanisms (5) are arranged in parallel along the length direction between the two support plates (2) for drying the upper surface and the lower surface of the paper sheet (37) respectively, two guide rollers (9) for guiding the paper sheet (37) are arranged between the two drying mechanisms (5), the two ends of the guide rollers (9) are rotatably connected to the two support plates (2), two heating components (1) are arranged on the top of the support base (4), and the two drying mechanisms (5) are connected to the two heating components (1) respectively; The drying mechanism (5) comprises two rotating circular plates (12) arranged to rotate along a horizontal line, the opposite ends of the two rotating circular plates (12) are coaxially fixedly connected with a rotating tube (16), the two rotating tubes (16) respectively penetrate the two supporting plates (2) and are rotatably connected to the supporting plates (2), a plurality of horizontally arranged connecting plates (13) are evenly distributed along the circumferential direction between the two rotating circular plates (12), the two ends of the connecting plates (13) are correspondingly fixedly connected to the two rotating circular plates (12), and a sliding arc box (11) coaxially arranged with the rotating circular plates (12) is provided between two adjacent connecting plates (13), the opposite ends of the sliding arc box (11) are correspondingly connected to the two adjacent connecting plates (13) in a horizontal sliding manner, and the outer surfaces of the sliding arc box (11) and the connecting plates (13) are flush with the outer surfaces of the rotating circular plates (12). Two outer partitions (19) are fixedly provided on the inner wall of the sliding arc box (11), and the two outer partitions (19) divide the inner space of the sliding arc box (11) into a left air chamber (18), a middle air chamber (26), and a right air chamber (27) in a clockwise direction. An inner arc box (22) is provided in the middle air chamber (26), and an inner partition (24) is fixedly provided on the inner wall of the inner arc box (22). The inner partition (24) divides the inner arc box (22) into a left air chamber (18), a middle air chamber (26), and a right air chamber (27). 2) is divided into an upper air chamber (21) and a lower air chamber (25), the left air chamber (18) and the lower air chamber (25) and the right air chamber (27) and the upper air chamber (21) are all connected through a plurality of ventilation hoses (20), the outer wall of the sliding arc box (11) is evenly distributed with a plurality of arc drying grooves (14) along the axial direction, and the bottom of the arc drying groove (14) is penetrated with a plurality of through holes (15) connected with the left air chamber (18) or the right air chamber (27), An outer fixed tube (33) is coaxially fixedly disposed between the two rotating circular plates (12), an inner fixed tube (32) is coaxially fixedly disposed inside the outer fixed tube (33), an outer rotating tube (35) and an inner rotating tube (34) connected in a rotatable and sealed manner are respectively disposed at the same end of the outer fixed tube (33) and the inner fixed tube (32), one of the ports of the outer rotating tube (35) is sealed, one of the ports of the inner rotating tube (34) is fixedly connected to the sealed end of the outer rotating tube (35), the other ends of the outer fixed tube (33) and the inner fixed tube (32) pass through the rotating circular plate (12) and the rotating tube (16) in sequence and are connected to the heating component (1), the outer fixed tube (33) and the inner fixed tube (34) are connected to the heating component (1), and the outer fixed tube (33) and the inner fixed tube (34) are connected to the heating component (1). The rotating circular plate (12) and the rotating tube (16) are rotatably connected. The outer wall of the outer rotating tube (35) is uniformly provided with a plurality of outer ventilation square tubes (17) connected to its inner cavity along the circumferential direction. One of the ports of the outer ventilation square tube (17) passes through the sliding arc box (11) and the built-in arc box (22) in sequence and is connected to the lower air chamber (25). The outer ventilation square tube (17) is slidably connected to the sliding arc box (11). The outer ventilation square tube (17) is fixedly connected to the built-in arc box (22). An inner ventilation square tube (23) is provided inside the outer ventilation square tube (17). Two ends of the inner ventilation square tube (23) are correspondingly connected to the upper air chamber (21) and the inner cavity of the inner rotating tube (34). A driving assembly (48) for controlling two adjacent sliding arc boxes (11) to slide toward or away from each other is provided between the two rotating circular plates (12); a rotating shaft (3) rotatably arranged along a horizontal line is provided above or below the rotating circular plates (12) and located on both sides; two ends of the rotating shaft (3) are rotatably connected to the two support plates (2); two positioning plates (6) are fixedly mounted on the rotating shaft (3); a limiting roller (7) rotatably arranged along a horizontal line is provided between the two positioning plates (6); and two ends of the limiting roller (7) are rotatably connected to the two positioning plates (6).

2. A drying system for offset paper manufacturing according to claim 1, characterized in that: A ventilation groove (29) is provided at the top of the connecting plate (13) along its length direction, and an air intake groove (30) and an air exhaust groove (28) are respectively provided inside the connecting plate (13), and the air intake groove (30) and the air exhaust groove (28) are correspondingly connected to the two ends of the ventilation groove (29), and an air intake square tube (31) and an air exhaust square tube (36) are fixedly provided at the bottom of the connecting plate (13), and the two ends of the air exhaust square tube (36) are correspondingly connected to the air intake groove (28) and the inner cavity of the outer rotating tube (35), and the two ends of the air intake square tube (31) are correspondingly connected to the inner cavity of the air intake groove (30) and the inner cavity of the inner rotating tube (34).

3. A drying system for offset paper manufacturing according to claim 2, characterized in that: The heating assembly (1) comprises a heating box (44) and a drying box (46) which are connected in sequence, a plurality of electric heating wires (43) are evenly distributed in the heating box (44), a plurality of detachable drying plates (45) are inserted in the drying box (46), the other end of the external fixed tube (33) is sealed, the other end of the internal fixed tube (32) passes through the sealed end of the external fixed tube (33) and is connected to the heating box (44), and a circulating fan (47) is fixedly provided on the top of the supporting base (4), the air inlet and the air outlet of the circulating fan (47) are connected to the external fixed tube (33) and the drying box (46) through the connecting tube (42) respectively.

4. The drying system for offset paper manufacturing according to claim 1, characterized in that: The driving assembly (48) comprises a fixed block (51) fixedly arranged horizontally, and two driving circular plates (50) are mounted on the fixed block (51) and are slidably arranged toward or away from each other. A fixed arc plate (53) is fixedly arranged at the bottom of the sliding arc box (11), and two adjacent fixed arc plates (53) are respectively rotatably engaged with the outer walls of the two driving circular plates (50).

5. A drying system for offset paper manufacturing according to claim 4, characterized in that: Two fixed U-shaped plates (10) are fixedly provided at opposite ends of the two support plates (2); a fixed column (49) is fixedly provided at the end of the fixed block (51); one end of the fixed column (49) passes through the rotating circular plate (12) and the rotating tube (16) in sequence and is fixedly connected to the fixed U-shaped plate (10) on one of the support plates (2); the fixed column (49) is rotatably connected to the rotating circular plate (12) and the rotating tube (16); and the external fixed tube (33) is fixedly inserted into the fixed U-shaped plate (10) on the other support plate (2).

6. The drying system for offset paper manufacturing according to claim 1, characterized in that: The outer walls of the two rotating tubes (16) on one of the support plates (2) are both fixedly sleeved with driven wheels (38), and the end of the support plate (2) is rotatably provided with two driving wheels (41), and the two driving wheels (41) are respectively connected to the two driven wheels (38) via a transmission belt (40).

7. A drying system for offset paper manufacturing according to claim 6, characterized in that: Two drive motors (39) are fixedly provided at the end of one of the support plates (2), and the output ends of the two drive motors (39) pass through the support plate (2) and are fixedly connected to the two drive wheels (41) respectively.

8. The drying system for offset paper manufacturing according to claim 1, characterized in that: Four servo motors (8) are fixedly mounted on the end of another support plate (2), and the output ends of the four servo motors (8) all pass through the support plate (2) and are fixedly connected to the four rotating shafts (3) accordingly.

9. The drying system for offset paper manufacturing according to claim 4, characterized in that: A horizontally arranged two-way telescopic cylinder (52) is fixedly provided on the top and bottom of the fixed block (51), and two telescopic ends of the two-way telescopic cylinder (52) are fixedly connected to two driving circular plates (50) respectively.

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