Cavity type rotary self-heating papermaking drying cylinder

Abstract

The cavity type rotating self-heating papermaking drying cylinder comprises a support, a first rotating shaft, a cylinder body and the like, the first rotating shaft is rotationally arranged on the support through a shaft seat, the cylinder body is fixed to the first rotating shaft, and reinforcing ribs are arranged between the cylinder body and the first rotating shaft. A second rotating shaft is rotationally arranged in the first rotating shaft, a rotating impeller on the second rotating shaft comprises an impeller plate capable of being adjusted in the radial direction, and a damping plate axially corresponding to the impeller is arranged in the cylinder body. A third rotating shaft rotating in the second rotating shaft is provided with an adjusting disc and other components to form a slider-crank mechanism with the impeller plate to adjust the position of the impeller plate. The first rotating shaft and the second rotating shaft are connected with a power source through driving gears and driving belt wheels. And a positioning assembly ensures that the positions of the rotating shafts are stable. The drying cylinder is self-heated based on the second law of thermodynamics, the drying cylinder and the impeller rotate reversely to save energy and reduce consumption, and the drying cylinder is formed by all metal hardware, is durable and environment-friendly and can uniformly and efficiently dry paper.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking equipment, in particular to a cavity-type rotary self-heating papermaking drying cylinder. Background Art

[0002] Paper drying devices include belt drying, drum drying, box drying, tower drying and other modes; heat sources include coal, electricity, gas, etc.; paper drying process has hot air flow and radiation. Hot air drum drying is that the hot air flow moves from the tail to the front, fully contacts with the paper, and fully utilizes the heat transfer through heat conduction, convection and radiation; the heat energy is directly transferred to the paper, so that the moisture of the paper is continuously evaporated in the drum.

[0003] In the prior art, there is a cavity-type rotary self-heating papermaking drying cylinder with a publication number of "CN118029188A", which includes: a bracket; a cylinder body, which is open at both ends, and the cylinder body is rotatably mounted on the bracket with the two openings opposite to each other as the axis; a support shaft, the support shaft is passed through the cylinder body and extends at both ends from the two openings of the cylinder body, and both ends of the support shaft are rotatably mounted on the bracket; a plurality of rotating resonance cavities, each rotating resonance cavity is mounted on the outer peripheral wall of the support shaft and located in the cylinder body, and each rotating resonance cavity is arranged at intervals along the length direction of the support shaft; a motor, which is mounted on the bracket and connected to the support shaft to drive the device to rotate the support shaft; a gear assembly, which is arranged on the bracket, and the gear assembly transmits the rotation of the support shaft to the cylinder body, so that the cylinder body and the support shaft rotate in opposite directions. In this way, the papermaking drying cylinder of this scheme can heat the inside of the cylinder body without using steam, so that there is no pressure inside the cylinder body, which is safe and reliable, and can reduce the weight of the cylinder body and reduce the manufacturing cost of the drying cylinder.

[0004] Most paper drying devices in the prior art consume a lot of energy during use, and the drying devices need to be regularly inspected during use, and must be scrapped after a certain number of years of use. Therefore, we propose a paper drying cylinder for papermaking to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a cavity-type rotary self-heating papermaking drying cylinder to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A cavity type rotary self-heating papermaking drying cylinder, comprising a bracket, a first rotating shaft is rotatably arranged on the bracket, a cylinder body is fixedly arranged on the first rotating shaft; a second rotating shaft is rotatably arranged in the first rotating shaft, a plurality of rotating impellers are fixedly arranged on the second rotating shaft, a plurality of impeller plates are arranged on the rotating impeller, the impeller plates are arranged on the rotating impeller in a circumferential array and their positions can be adjusted radially along the second rotating shaft, and the plurality of rotating impellers are arranged inside the cylinder body;

[0008] A plurality of damping plates are fixedly arranged inside the cylinder body. The damping plates are arranged in a circumferential array on the inner surface of the cylinder body, and the positions of the damping plates correspond to the positions of the rotating impeller in the axial direction.

[0009] Preferably, a third rotating shaft is rotatably arranged in the second rotating shaft, an adjusting disk is fixedly arranged on the third rotating shaft, the adjusting disk is arranged inside the rotating impeller, a plurality of adjusting cranks are fixedly arranged on the adjusting disk, a first connecting column is fixedly arranged on one end of the adjusting crank; a plurality of slideways are fixedly arranged on the side wall of the rotating impeller, the impeller plate is slidably arranged in the slideway, a connecting seat is fixedly arranged at one end of the impeller plate, a second connecting column is fixedly arranged on the connecting seat, a connecting rod is rotatably arranged between the first connecting column and the second connecting column, the impeller plate, the connecting rod and the adjusting crank together constitute a crank slider mechanism; when the adjusting disk drives the adjusting crank to rotate, the connecting rod drives the impeller plate to slide in the slideway, thereby realizing the synchronous position change of the plurality of impeller plates on the rotating impeller.

[0010] Preferably, a driving gear is fixedly provided at one end of the first rotating shaft, and a driving pulley is fixedly provided at one end of the second rotating shaft.

[0011] Preferably, a plurality of reinforcing ribs are fixedly arranged between the first rotating shaft and the cylinder body.

[0012] Preferably, the first rotating shaft is rotatably arranged on the bracket via a first shaft seat and a second shaft seat.

[0013] Preferably, an adjusting wheel is fixedly provided on one end of the third rotating shaft.

[0014] Preferably, a positioning assembly is provided between the third rotating shaft and the second rotating shaft, and the positioning assembly includes positioning grooves formed in a circular array on the inner surface of the second rotating shaft, and positioning holes formed on the third rotating shaft, a spring is fixedly provided in the positioning hole, a positioning ball is fixedly provided at one end of the spring, and the positioning ball matches the positioning groove. The positioning assembly is used to ensure the stability of the relative position between the third rotating shaft and the second rotating shaft during operation of the equipment.

[0015] Preferably, a positioning bolt is fixedly provided on the second rotating shaft, the positioning bolt passes through the second rotating shaft and contacts the third rotating shaft, and the positioning bolt is used to fix the second rotating shaft and the third rotating shaft.

[0016] Preferably, a plurality of observation holes are provided on the side wall of the cylinder body, and sealing end covers are fixedly provided on the observation holes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The rotating impeller rotates inside the cylinder, and its blades exert centrifugal force and pressure on the gas, causing the gas to flow quickly and be compressed in the cylinder. At the same time, the position of the impeller plate on the rotating impeller is adjustable, which can optimize the effect on the gas according to different drying requirements, enhance the transfer of heat by the gas, and thus improve the drying efficiency.

[0019] 2. The device uses the principle of heat generation by gas compression to achieve self-heating, which greatly reduces energy consumption compared to traditional drying cylinders that rely on external combustion boilers for heating. During the gas compression process, although part of the external work is converted into increased internal energy of the system and part is transferred to the gas in the form of heat, the overall energy utilization efficiency is higher because this self-heating method is directly achieved through the coordinated work of components inside the drying cylinder, reducing the loss during energy transmission.

[0020] 3. The impeller plate on the rotating impeller can be adjusted radially along the second rotating shaft, and the synchronous position change can be achieved through the crank slider mechanism composed of the adjusting disk, adjusting crank, connecting rod, etc. This adjustment method can flexibly change the effect of the rotating impeller on the gas according to different working requirements (such as different paper types, different drying stages, etc.), thereby achieving precise control of the gas state inside the drying cylinder and further optimizing the drying and self-heating effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device of the present invention;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the overall device of the present invention from another viewing angle;

[0023] Figure 3 It is a cross-sectional view of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating impeller of the present invention;

[0026] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the rotary impeller of the present invention;

[0027] Figure 7 It is a cross-sectional view of the second rotating shaft and the third rotating shaft of the present invention.

[0028] In the figure: 1. bracket; 2. first rotating shaft; 3. cylinder body; 4. second rotating shaft; 5. rotating impeller; 6. impeller plate; 7. damping plate; 8. third rotating shaft; 9. adjusting disk; 10. adjusting crank; 11. first connecting column; 12. slideway; 13. connecting seat; 14. second connecting column; 15. connecting rod; 16. driving gear; 17. driving pulley; 18. reinforcing rib; 19. first shaft seat; 20. second shaft seat; 21. adjusting wheel; 2201. positioning groove; 2202. positioning hole; 2203. spring; 2204. positioning ball; 23. positioning bolt; 24. observation hole; 25. sealing end cover. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-7 , the present invention provides a technical solution:

[0031] The cavity-type rotary self-heating papermaking drying cylinder of the present invention is an innovative papermaking drying equipment, which realizes the function of self-heating paper drying through unique structural design and working principle, and has many advantages such as energy saving and environmental protection.

[0032] The support 1 is used as the support base of the entire drying cylinder and is made of high-strength metal materials (such as high-quality steel) to ensure sufficient strength and stability. Its structure is a frame type, which is made of multiple metal rods connected by welding or bolts. This frame structure can evenly distribute the weight of each component of the drying cylinder and the force generated during operation, providing a stable support platform for the entire drying cylinder.

[0033] The first rotating shaft 2 is rotatably arranged on the bracket 1 through the first shaft seat 19 and the second shaft seat 20. The first shaft seat 19 and the second shaft seat 20 are respectively located near the two ends of the first rotating shaft 2. A high-precision bearing (such as a deep groove ball bearing) is installed inside the shaft seat, and the outer ring of the bearing and the shaft seat are installed with an interference fit to ensure that the outer ring of the bearing is fixed relative to the shaft seat during the operation of the drying cylinder. The inner ring of the bearing and the first rotating shaft 2 are transitionally matched, so that the first rotating shaft 2 can rotate flexibly in the shaft seat and ensure a certain connection stability. Sealing devices (such as rubber sealing rings) are also installed on both sides of the bearing to prevent dust, impurities, etc. from entering the bearing and affecting its normal operation, and also to prevent the grease in the bearing from leaking. In addition, in order to reduce the friction when the first rotating shaft 2 rotates, an appropriate amount of grease is applied to the contact surface between the inner ring of the bearing and the first rotating shaft 2.

[0034] A cylinder body 3 is fixedly arranged on the first rotating shaft 2. The cylinder body 3 and the first rotating shaft 2 are connected in two ways: welding and bolt connection.

[0035] When welding, the connection part of the first rotating shaft 2 and the cylinder body 3 is pre-treated, the surface is cleaned, and impurities such as rust and oil are removed. Then a suitable welding process (such as arc welding) is used for welding to ensure that the welding is firm. After welding is completed, the welding quality is checked by non-destructive testing (such as ultrasonic testing) to ensure that there are no defects such as pores and cracks.

[0036] The bolt connection is to pre-process matching bolt holes at the connection part of the first rotating shaft 2 and the cylinder body 3. High-strength bolts are selected to fix the cylinder body 3 on the first rotating shaft 2 through bolts. To prevent the bolts from loosening, anti-loosening nuts (such as nylon anti-loosening nuts) or anti-loosening washers can be used.

[0037] Meanwhile, a plurality of reinforcing ribs 18 are fixedly arranged between the first rotating shaft 2 and the cylinder body 3. The reinforcing ribs 18 are evenly distributed in the connection area between the two and adopt a triangular structure because the triangle has good stability. The reinforcing ribs 18 are made of the same metal material (such as steel) as the first rotating shaft 2 and the cylinder body 3 and are connected to them by welding. The function of the reinforcing ribs 18 is to enhance the connection strength between the first rotating shaft 2 and the cylinder body 3. During the operation of the drying cylinder, the cylinder body 3 rotates with the first rotating shaft 2. Since centrifugal force and other forces are generated when the cylinder body 3 rotates, the reinforcing ribs 18 can share these forces to prevent damage to the connection parts.

[0038] When the drying cylinder is working, the first rotating shaft 2 rotates to drive the cylinder body 3 to rotate synchronously. This rotation is very important for the drying process of the paper in the cylinder body 3. The rotating cylinder body 3 causes the paper and the inner wall of the cylinder body 3 to move relative to each other, thereby ensuring that the paper can evenly contact the heat transferred by the wall of the cylinder body 3, and evenly drying the paper is achieved.

[0039] The second rotating shaft 4 is rotatably arranged in the first rotating shaft 2, and the rotating connection is realized by adopting a nested structure. A bearing or a sleeve is installed inside the first rotating shaft 2, so that the second rotating shaft 4 can rotate independently inside the first rotating shaft 2.

[0040] This structure enables the first rotating shaft 2 and the second rotating shaft 4 to run in different rotation directions. When external power is transmitted to the first rotating shaft 2, the first rotating shaft 2 starts to rotate, and since the second rotating shaft 4 is independently connected to the first rotating shaft 2 through a bearing or a sleeve, the second rotating shaft 4 can rotate in different directions inside the first rotating shaft 2 according to its own working requirements.

[0041] A plurality of rotating impellers 5 are fixedly arranged on the second rotating shaft 4. The rotating impellers 5 and the second rotating shaft 4 can be fixedly connected by key connection or interference fit.

[0042] A plurality of rotating impellers 5 are evenly arranged inside the cylinder 3. When the rotating impellers 5 rotate, they will act on the gas in the cylinder 3. The shape and angle of the blades of the rotating impellers 5 are designed according to the principle of gas dynamics. When the rotating impellers 5 rotate, the blades exert centrifugal force and pressure on the gas in the cylinder 3, causing the gas to flow and compress in the cylinder 3, converting the mechanical energy of the rotating impellers 5 into kinetic energy and pressure energy of the gas, providing conditions for the subsequent self-heating process.

[0043] A plurality of impeller plates 6 are disposed on the rotating impeller 5 . The impeller plates 6 are disposed on the rotating impeller 5 in a circumferential array and their positions can be adjusted radially along the second rotating shaft 4 .

[0044] A plurality of slideways 12 are fixedly arranged on the side wall of the rotating impeller 5, and the inner wall of the slideway 12 is smooth to reduce the friction when the impeller plate 6 slides. The impeller plate 6 is slidably arranged in the slideway 12, and a connecting seat 13 is fixedly arranged at one end of the impeller plate 6, and a second connecting column 14 is fixedly arranged on the connecting seat 13.

[0045] A third rotating shaft 8 is rotatably arranged in the second rotating shaft 4 .

[0046] An adjusting disk 9 is fixedly arranged on the third rotating shaft 8, and the adjusting disk 9 is arranged inside the rotating impeller 5. The adjusting disk 9 and the third rotating shaft 8 can be fixedly connected by welding or bolting.

[0047] When welding, the connection parts of the third rotating shaft 8 and the adjusting disk 9 should be cleaned and pre-treated before welding to ensure that there are no impurities such as oil, rust, etc. on the surface, and then use a suitable welding process (such as argon arc welding) for welding. After welding is completed, the welding part should be quality inspected (such as non-destructive testing) to ensure that the welding is firm and free of defects such as cracks.

[0048] When connecting with bolts, matching screw holes are respectively processed on the third rotating shaft 8 and the adjusting disk 9, and high-strength bolts are used to fix the adjusting disk 9 on the third rotating shaft 8. When installing the bolts, they must be tightened according to the specified torque. At the same time, anti-loosening nuts or anti-loosening washers can be used to prevent the bolts from loosening.

[0049] The adjusting disk 9 can rotate with the rotation of the third rotating shaft 8. When the third rotating shaft 8 rotates, the adjusting disk 9 rotates synchronously, and a plurality of adjusting cranks 10 are fixedly provided on the adjusting disk 9. The adjusting cranks 10 move with the rotation of the adjusting disk 9, and this movement is transmitted to the impeller plate 6 through the connecting rod 15, so as to adjust the position of the impeller plate 6, thereby affecting the effect of the rotating impeller 5 on the gas in the cylinder 3.

[0050] A plurality of adjusting cranks 10 are fixedly provided on the adjusting disk 9, a first connecting column 11 is fixedly provided at one end of the adjusting crank 10, a connecting rod 15 is rotatably provided between the first connecting column 11 and a second connecting column 14 on the impeller plate 6, and the impeller plate 6, the connecting rod 15 and the adjusting crank 10 together constitute a crank slider mechanism.

[0051] When the adjusting disk 9 rotates, the adjusting crank 10 makes a circular motion around the third rotating shaft 8, and the first connecting column 11 at one end of the adjusting crank 10 drives the second connecting column 14 on the impeller plate 6 through the connecting rod 15. Since the impeller plate 6 can only slide radially in the slideway 12 of the rotating impeller 5, the impeller plate 6 moves radially along the slideway 12 under the push and pull action of the connecting rod 15. When the position of the impeller plate 6 needs to be adjusted, the third rotating shaft 8 can be rotated by operating the adjusting wheel 21 at one end of the third rotating shaft 8, thereby driving the adjusting disk 9 to rotate, and the radial position of the impeller plate 6 can be accurately adjusted through the crank slider mechanism. For example, when it is necessary to enhance the compression effect of the rotating impeller 5 on the gas in the cylinder body 3, the adjusting wheel 21 can be operated to move the impeller plate 6 toward the edge of the rotating impeller 5; conversely, when it is necessary to weaken the compression effect, the impeller plate 6 can be moved toward the center of the rotating impeller 5. This adjustment method can flexibly control the state of the gas in the cylinder body 3 to meet different paper drying requirements and the self-heating requirements of the drying cylinder.

[0052] A positioning assembly is provided between the second rotating shaft 4 and the third rotating shaft 8, and the positioning assembly includes a positioning groove 2201 formed in an annular array on the inner surface of the second rotating shaft 4, and a positioning hole 2202 formed on the third rotating shaft 8. A spring 2203 is fixedly provided in the positioning hole 2202, and a positioning ball 2204 is fixedly provided at one end of the spring 2203, and the positioning ball 2204 matches the positioning groove 2201. At the same time, a positioning bolt 23 is fixedly provided on the second rotating shaft 4, and the positioning bolt 23 passes through the second rotating shaft 4 and contacts the third rotating shaft 8.

[0053] The positioning ball 2204 is inserted into the positioning groove 2201 under the action of the spring 2203 to ensure the relative position between the third rotating shaft 8 and the second rotating shaft 4 is stable. When the position of the impeller plate needs to be adjusted, the positioning bolt 23 is first loosened, and the third rotating shaft 8 is rotated relative to the second rotating shaft 4 by the adjusting wheel 21 to adjust the position of the impeller plate 6 in the slideway 12. Since the positioning ball 2204 and the positioning groove 2201 play a role in limiting the excessive displacement of the third rotating shaft 8, by providing positioning grooves 2201 with different intervals, the third rotating shaft 8 can also be rotated to a specified angle, so that the impeller plate 6 can also be adjusted to different distances.

[0054] A plurality of damping plates 7 are also fixedly arranged inside the cylinder body 3, and the damping plates 7 are arranged in a circumferential array on the inner surface of the cylinder body 3. The damping plates 7 and the inner surface of the cylinder body 3 can be fixed by welding or bolting.

[0055] The position of the damping plate 7 corresponds to the position of the rotating impeller 5 in the axial direction. When the rotating impeller 5 rotates, a specific interaction will occur between the damping plate 7. The damping plate 7 will generate resistance to the gas flow around the rotating impeller 5, and this resistance will change the flow direction and velocity distribution of the gas. For example, when the rotating impeller 5 rotates rapidly, the gas flows to the edge of the cylinder 3 under the action of centrifugal force, and the damping plate 7 hinders this flow, causing the gas to generate more turbulence and pressure changes in the cylinder 3. This turbulence and pressure changes help to improve the mixing degree of the gas and the energy transfer efficiency, thereby affecting the self-heating effect of the cylinder 3 and the drying effect of the paper.

[0056] A driving gear 16 is fixedly disposed at one end of the first rotating shaft 2, and a driving pulley 17 is fixedly disposed at one end of the second rotating shaft 4. The driving gear 16 and the driving pulley 17 can be connected to an external power source (such as a motor) through a suitable transmission device (such as a gear or a belt), respectively.

[0057] Through this transmission mode, different external power sources (electric motors) can provide power in different directions for the rotation of the first rotating shaft 2 and the second rotating shaft 4. The transmission mode can be selected according to actual needs. For example, the chain transmission has an accurate transmission ratio and strong load-bearing capacity, which is suitable for transmitting large torques; the belt transmission has a simple structure and buffers vibrations, which is suitable for occasions where the transmission accuracy requirements are not particularly high. During the operation of the drying cylinder, the rotation of the first rotating shaft 2 and the second rotating shaft 4 drives the cylinder body 3 and the rotating impeller 5 and other components to work, realizing the drying of paper and the self-heating function of the drying cylinder.

[0058] An adjusting wheel 21 is fixedly arranged at one end of the third rotating shaft 8. The adjusting wheel 21 and the third rotating shaft 8 can be fixedly connected by key connection or interference fit.

[0059] The adjusting wheel 21 can be used to manually adjust the angle of the third rotating shaft 8. When the position of the impeller plate 6 needs to be adjusted, the third rotating shaft 8 can be driven to rotate by rotating the adjusting wheel 21, and then the position of the impeller plate 6 can be changed through the linkage of the adjusting disk 9, the crank slider mechanism and other components, so as to optimize the working state of the drying cylinder.

[0060] A plurality of observation holes 24 are provided on the side wall of the cylinder body 3, and a sealing end cover 25 is fixedly provided on the observation hole 24. The sealing end cover 25 and the observation hole 24 can be connected by bolts or sealed by a sealant.

[0061] The setting of the observation hole 24 facilitates observation of the working conditions inside the cylinder 3, for example, the working conditions of the rotating impeller 5, the damping plate 7 and other components and the flow of gas in the cylinder 3 can be observed. The sealing end cover 25 can ensure the sealing of the inside of the cylinder 3 to prevent gas leakage and the like.

[0062] The heating principle of the self-heating drying cylinder of the present invention uses the second law of thermodynamics. Compressed gas is a gas whose volume decreases and pressure increases under the action of external force. When the outside world applies pressure to the gas, the average distance between gas molecules decreases, resulting in an increase in the collision frequency, which increases the kinetic energy of the gas molecules.

[0063] From the perspective of adiabatic compression, when the gas is compressed quickly and losslessly, there is not enough time for the heat to be transferred to the surrounding environment, and an adiabatic gradient is generated, and the temperature inside the compressed gas will rise significantly. From the perspective of isentropic process, when the compression process is carried out without any form of energy conversion, the entropy of the gas remains unchanged, which means that there is no heat conduction between the molecules inside the gas. When the gas is compressed isentropically, its temperature will also rise.

[0064] According to the ideal gas state equation, when a gas is compressed, its volume decreases, which increases the frequency of molecular collisions per unit volume. This means that the interaction between molecules in the compressed gas is enhanced, and due to the interaction forces between molecules, these forces will manifest as an increase in the temperature of the gas. In the process of compressing the gas, external pressure is applied to the gas and work is input. In this process, part of the external work will be converted into an increase in the internal energy of the system, while the other part will be transferred to the gas in the form of heat. According to the Joule-Thomson effect under adiabatic conditions, when an irreversible adiabatic process occurs, such as a compression process, the active input is accompanied by an increase in temperature.

[0065] In the drying cylinder of the present invention, the motor transmits power to the rotating impeller 5 through the driving pulley 17 and the second rotating shaft 4, causing it to rotate. The impeller plate 6 on the rotating impeller 5 and the damping plate 7 array in the cylinder body 3 rotate in opposite directions, thereby generating pressure on the gas, causing the temperature of the cylinder body 3 to rise. As the temperature of the air in the cylinder body 3 rises sharply, the heat is quickly transferred to the outer surface of the cylinder body 3, and the maximum temperature of the cylinder body 3 can reach 150°C-200°C.

[0066] When the position of the impeller plate 6 needs to be adjusted, the third rotating shaft 8 can be rotated by operating the adjusting wheel 21 at one end of the third rotating shaft 8. When the third rotating shaft 8 rotates, the adjusting disk 9 is driven to rotate, and the adjusting crank 10 on the adjusting disk 9 rotates along with the adjusting disk 9. Since a first connecting column 11 is fixedly provided at one end of the adjusting crank 10, a connecting rod 15 is rotatably provided between the first connecting column 11 and the second connecting column 14 of the connecting seat 13 on the impeller plate 6, and the impeller plate 6 is slidably provided in the slideway 12 of the rotating impeller 5, when the adjusting crank 10 rotates, the impeller plate 6 is driven to slide in the slideway 12 through the connecting rod 15, thereby realizing the synchronous position change of several impeller plates 6 on the rotating impeller 5. Such adjustment of the position of the impeller plate 6 can change the effect of the rotating impeller 5 on the gas, thereby affecting the compression and temperature increase of the gas.

[0067] Since the drying cylinder and the rotating impeller 5 rotate in opposite directions, the relative speed is high, and the transmission power is correspondingly reduced, thereby achieving the purpose of energy saving and consumption reduction. This structural design enables the drying cylinder of the present invention to effectively reduce energy consumption and improve energy utilization efficiency while achieving the heating function.

[0068] The biggest highlight of the present invention is that the heating function of the drying cylinder is entirely made of metal hardware, which completely gets rid of the reliance on combustion-type boiler heat source systems. Not only is durability and reliability significantly improved, but energy saving, greenness and environmental protection are also completely achieved, laying a beneficial foundation for the development of the new papermaking industry.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cavity type rotary self-heating papermaking drying cylinder, characterized in that: The invention comprises a support (1), a first rotating shaft (2) being rotatably arranged on the support (1), a cylinder body (3) being fixedly arranged on the first rotating shaft (2); a second rotating shaft (4) being rotatably arranged in the first rotating shaft (2), a plurality of rotating impellers (5) being fixedly arranged on the second rotating shaft (4), a plurality of impeller plates (6) being arranged on the rotating impeller (5), the impeller plates (6) being arranged on the rotating impeller (5) in a circular array and their positions being adjustable radially along the second rotating shaft (4), and the plurality of rotating impellers (5) being arranged inside the cylinder body (3); A plurality of damping plates (7) are also fixedly arranged inside the cylinder body (3); the damping plates (7) are arranged on the inner surface of the cylinder body (3) in a circumferential array, and the positions of the damping plates (7) correspond to the positions of the rotating impeller (5) in the axial direction.

2. The cavity type rotary self-heating papermaking drying cylinder according to claim 1, characterized in that: A third rotating shaft (8) is rotatably arranged in the second rotating shaft (4), an adjusting disk (9) is fixedly arranged on the third rotating shaft (8), the adjusting disk (9) is arranged inside the rotating impeller (5), a plurality of adjusting cranks (10) are fixedly arranged on the adjusting disk (9), and a first connecting column (11) is fixedly arranged at one end of the adjusting crank (10); a plurality of slideways (12) are fixedly arranged on the side wall of the rotating impeller (5), the impeller plate (6) is slidably arranged in the slideway (12), and a connecting column (11) is fixedly arranged at one end of the impeller plate (6) A seat (13) is provided, a second connecting column (14) is fixedly arranged on the connecting seat (13), a connecting rod (15) is rotatably arranged between the first connecting column (11) and the second connecting column (14), and the impeller plate (6), the connecting rod (15) and the adjusting crank (10) together constitute a crank slider mechanism; when the adjusting disk (9) drives the adjusting crank (10) to rotate, the connecting rod (15) drives the impeller plate (6) to slide in the slideway (12), thereby realizing synchronous position changes of a plurality of the impeller plates (6) on the rotating impeller (5).

3. The cavity type rotary self-heating papermaking drying cylinder according to claim 2, characterized in that: A driving gear (16) is fixedly disposed on one end of the first rotating shaft (2), and a driving pulley (17) is fixedly disposed on one end of the second rotating shaft (4).

4. The cavity type rotary self-heating papermaking drying cylinder according to claim 3 is characterized in that: A plurality of reinforcing ribs (18) are fixedly arranged between the first rotating shaft (2) and the cylinder body (3).

5. The cavity type rotary self-heating papermaking drying cylinder according to claim 4, characterized in that: The first rotating shaft (2) is rotatably arranged on the bracket (1) via a first shaft seat (19) and a second shaft seat (20).

6. The cavity type rotary self-heating papermaking drying cylinder according to claim 5, characterized in that: An adjusting wheel (21) is fixedly arranged on one end of the third rotating shaft (8).

7. The cavity type rotary self-heating papermaking drying cylinder according to claim 3 is characterized in that: A positioning assembly is provided between the third rotating shaft (8) and the second rotating shaft (4), the positioning assembly comprising positioning grooves (2201) provided on the inner surface of the second rotating shaft (4) and arranged in an annular array, and positioning holes (2202) provided on the third rotating shaft (8), a spring (2203) being fixedly provided in the positioning hole (2202), a positioning ball (2204) being fixedly provided at one end of the spring (2203), the positioning ball (2204) being matched with the positioning groove (2201), and the positioning assembly is used to ensure the relative position stability between the third rotating shaft (8) and the second rotating shaft (4) during the operation of the equipment.

8. The cavity type rotary self-heating papermaking drying cylinder according to claim 6, characterized in that: A positioning bolt (23) is fixedly arranged on the second rotating shaft (4), the positioning bolt (23) passes through the second rotating shaft (4) and contacts the third rotating shaft (8), and the positioning bolt (23) is used to fix the second rotating shaft (4) and the third rotating shaft (8).

9. The cavity type rotary self-heating papermaking drying cylinder according to claim 1, characterized in that: A plurality of observation holes (24) are provided on the side wall of the cylinder body (3), and a sealing end cover (25) is fixedly provided on the observation hole (24).

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