A kind of high-efficiency drying can be realized suspension oven

Abstract

The present application relates to the field of drying device, specifically to a kind of high-efficiency drying can be realized suspension oven, the suspension oven includes upper air inlet chamber and lower air inlet chamber, cooperation groove is cooperated with air nozzle assembly, the air inlet end of cooperation groove is connected with air supply channel, the outside of upper air inlet chamber and lower air inlet chamber is provided with air supply cavity, at least two fans are provided on the side of air supply cavity, heat circulation channel is provided in upper air inlet chamber and lower air inlet chamber, and waste heat recovery pipeline is provided in upper air inlet chamber and lower air inlet chamber located at both ends of transmission channel, the suspension oven can be in suspension state by internal wind power to the release paper in transmission channel, and drying operation is carried out, and the heat energy utilization efficiency in oven is higher, so that the drying operation of release paper can be efficiently realized, and the position of air nozzle can be adjusted to adapt to the drying requirement when different release paper is produced.

Description

Technical Field

[0001] This invention relates to the field of drying equipment, specifically a suspended drying oven capable of achieving efficient drying. Background Technology

[0002] Release paper is a coated strip. During the processing of the strip, the coating needs to be dried, which requires an oven. However, ovens with support structures usually move the strip through the support structure when drying it. The support structure can easily affect the coating on the strip. Therefore, a suspended oven that allows the strip to be suspended in the air for drying has been designed.

[0003] Patent Document 1: Chinese Utility Model Patent CN212133197U, published on December 11, 2020, discloses a suspended drying oven. Because both the inlet and outlet ends of the oven are open, the internal space of the oven is connected to the outside. Therefore, during the drying process, the heat energy inside the oven will be lost to the outside. When the heat energy is lost, it is necessary to replenish the heat energy inside the oven in time, which requires more energy to provide heat energy for the oven, resulting in unnecessary increases in production costs. Moreover, although the air-blade suspended nozzles on the oven can blow hot air onto the surface of the material belt for drying and can form a circulating gas flow, the wind speed of the hot air blown onto the air-blade suspended nozzles is weakened by the movable baffle, and the slowed gas flow rate on the surface of the material belt will also affect the drying time of the material belt and affect the drying efficiency of the material belt.

[0004] Patent document 2: Chinese invention patent CN112691867A, published on April 23, 2021, discloses a suspended drying oven on a flexible substrate coating machine. When the suspended drying oven is used for drying, the material belt needs to enter the oven from the openings on both sides. The openings on both sides of the oven make it easy for the heat energy inside the oven to be lost to the outside, resulting in heat loss and an increase in production costs.

[0005] Therefore, it is necessary to design a suspended drying oven that can achieve efficient drying. Summary of the Invention

[0006] To address the shortcomings of the aforementioned technologies, this invention provides a suspension drying oven that uses internal airflow to suspend release paper within a transport channel and perform drying operations on it. The oven has high thermal efficiency, enabling efficient drying of release paper. Furthermore, the position of the air nozzles can be adjusted to adapt to the drying requirements of different release paper production processes.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0008] This invention discloses a suspended drying oven capable of achieving high-efficiency drying. The suspended drying oven includes an upper air inlet chamber and a lower air inlet chamber. The upper air inlet chamber is fixed above the lower air inlet chamber by screws. The junction of the upper and lower air inlet chambers forms a conveying channel for material transfer. The upper air inlet chamber is composed of a first ventilation plate and a second ventilation plate, and the lower air inlet chamber is composed of a third ventilation plate and a fourth ventilation plate. The second ventilation plate is fixedly connected to the bottom end of the first ventilation plate, and the fourth ventilation plate is fixedly connected to the top end of the third ventilation plate. Both the second and fourth ventilation plates have several mating grooves. The mating groove is fitted with a nozzle assembly. The mating grooves in the second ventilation plate and the fourth ventilation plate are staggered along the length of the transmission channel. The air inlet end of the mating groove is connected to an air supply channel. An air supply chamber is provided on the outer side of the upper air inlet chamber and the outer side of the lower air inlet chamber. The air inlet end of the air supply channel is connected to the air supply chamber. At least two fans are provided on one side of the air supply chamber. A groove is provided at the bottom of the air supply chamber. An electric heating tube is provided in the groove. A heat circulation channel is provided in both the upper air inlet chamber and the lower air inlet chamber. Waste heat recovery pipes are provided in both the upper air inlet chamber and the lower air inlet chamber located at both ends of the transmission channel.

[0009] Furthermore, the nozzle assembly includes a nozzle and a connecting frame. The outer walls of both ends of the upper and lower air inlet chambers are provided with positioning plates. Threaded posts are provided on both sides of the positioning plates. Hexagonal posts are provided at both ends of the threaded posts. Nuts are fitted to the threaded posts on the outer side of the hexagonal posts. The two ends of the connecting frame are L-shaped and fit with the threaded posts between the nuts and the hexagonal posts. A plurality of nozzles are equidistantly arranged on the connecting frame. A first through hole is provided between two adjacent nozzles. The first through hole is located outside the pipe opening of the heat circulation channel and the pipe opening of the waste heat recovery pipe. The nozzle fits in the mating groove and extends into the air supply channel.

[0010] Furthermore, the air supply channel portion extending into the transmission channel has an n-shaped cross-section in the longitudinal direction, the cross-sectional shape of the nozzle is the same as the cross-sectional shape of the mating groove, the air outlet end of the nozzle has a trapezoidal cross-section, and the air inlet end of the nozzle extending into the air supply channel is provided with a first air inlet, which is connected to the air supply channel.

[0011] Furthermore, the air supply channel pipe extending into the air supply cavity is a second air inlet. The height of the second air inlet is the same as the height of the air outlet of the fan. Both the upper and lower air inlet outer walls located in the air supply cavity are provided with air guide plates. The air guide plates are located between two adjacent second air inlets. The part of the air guide plate near the fan side is the air guide angle, and the angle of the air guide angle is less than 180°.

[0012] Furthermore, the heat circulation channel is divided into a vertical section and a horizontal section. The second ventilation plate and the fourth ventilation plate are both provided with a vertical section, and the first ventilation plate and the third ventilation plate are both provided with a horizontal section. The cross-sectional shape of the vertical section is the same as the cross-sectional shape of the mating groove. The air supply channel wall located outside the horizontal section is provided with a second through hole, and the air supply channel is connected to the horizontal section through the second through hole.

[0013] Furthermore, the cross-section of the waste heat recovery pipe is U-shaped, and the two ends of the waste heat recovery pipe are respectively connected to the transmission channel and the air supply cavity. The waste heat recovery pipe located in the air supply cavity is located on the outside of the groove.

[0014] Furthermore, at least two heating elements are provided in the groove, and power sockets are provided on both sides of the air supply cavity, with the power-connected ends of the heating elements inserted into the power sockets.

[0015] The beneficial effects of this invention are as follows:

[0016] This suspended drying oven uses internal airflow to suspend the release paper within the conveying channel and then dries it. A heat circulation channel circulates the hot air inside the oven, and the recovered hot air is then blown back onto the release paper for drying, resulting in high thermal efficiency. The oven's high thermal efficiency enables efficient drying of the release paper. A waste heat recovery pipe recovers heat from both ends of the conveying channel, preventing heat loss and further improving efficiency. By adjusting the position of the air nozzles, the position of the drying air blown onto the release paper can be adjusted to meet the drying requirements of different release paper production processes. Attached Figure Description

[0017] Figure 1 This is a front view of the external structure of the suspended oven.

[0018] Figure 2 This is a top view of the external structure of the suspended oven.

[0019] Figure 3 This is a front view of the internal structure of the suspended oven.

[0020] Figure 4 This is a top view of the internal structure of the suspended oven.

[0021] Figure 5 This is a schematic diagram of the structure of the first ventilation panel.

[0022] Figure 6 This is a schematic diagram of the second ventilation panel.

[0023] Figure 7 This is a structural diagram of the vertical segment.

[0024] Figure 8 This is a schematic diagram of the air supply duct.

[0025] Figure 9 This is a structural diagram of one side of the nozzle assembly.

[0026] Figure 10 This is a schematic diagram of the structure on the other side of the nozzle assembly.

[0027] In the diagram, 1. Upper air inlet chamber; 2. Lower air inlet chamber; 3. Transmission channel; 4. First ventilation panel; 5. Second ventilation panel; 6. Third ventilation panel; 7. Fourth ventilation panel; 8. Fitting groove; 9. Nozzle assembly; 10. Air supply channel; 11. Air supply cavity; 12. Fan; 13. Groove; 14. Electric heating element; 15. Heat circulation channel; 16. Waste heat recovery pipe; 17. Nozzle; 18. Connecting frame; 19. Positioning plate; 20. Threaded post; 21. Hexagonal post; 22. Nut; 23. First through hole; 24. First air inlet; 25. Second air inlet; 26. Air guide plate; 27. Vertical section; 28. Horizontal section; 29. ​​Second through hole; 30. Power socket; 31. Air guide angle. Implementation

[0028] like Figures 1-10 As shown, the present invention discloses a suspended drying oven capable of achieving high-efficiency drying. The suspended drying oven includes an upper air inlet chamber 1 and a lower air inlet chamber 2. The upper air inlet chamber 1 is fixedly connected above the lower air inlet chamber 2. The center of the upper air inlet chamber 1 and the lower air inlet chamber 2 forms a transmission channel 3 for material transmission. The upper air inlet chamber 1 is composed of a first ventilation plate 4 and a second ventilation plate 5. The lower air inlet chamber 2 is composed of a third ventilation plate 6 and a fourth ventilation plate 7. The second ventilation plate 5 is fixedly connected to the bottom end of the first ventilation plate 4, and the fourth ventilation plate 7 is fixedly connected to the upper end of the third ventilation plate 6.

[0029] Both the second ventilation plate 5 and the fourth ventilation plate 7 are provided with a number of mating grooves 8, and each mating groove 8 is fitted with a nozzle assembly 9. The mating grooves 8 in the second ventilation plate 5 and the mating grooves 8 in the fourth ventilation plate 7 are staggered along the length of the transmission channel 3. The air inlet end of each mating groove 8 is connected to an air supply channel 10. An air supply cavity 11 is provided on the outer side of the upper air inlet chamber 1 and the outer side of the lower air inlet chamber 2. The air inlet end of the air supply channel 10 is connected to the air supply cavity 11. At least two fans 12 are provided on one side of the air supply cavity 11. A groove 13 is provided at the bottom of the air supply cavity 11. An electric heating tube 14 is provided in the groove 13. Both the upper air inlet chamber 1 and the lower air inlet chamber 2 are provided with a heat circulation channel 15. Waste heat recovery pipes 16 are provided in the upper air inlet chamber 1 and the lower air inlet chamber 2 located at both ends of the transmission channel 3.

[0030] The air nozzle assembly 9 includes an air nozzle 17 and a connecting frame 18. Positioning plates 19 are provided on both end walls of the upper air inlet chamber 1 and the lower air inlet chamber 2. Threaded columns 20 are provided on both sides of the positioning plate 19. Hexagonal columns 21 are provided at both ends of the threaded column 20. Nuts 22 are fitted on the threaded column 20 outside the hexagonal column 21. Both ends of the connecting frame 18 are L-shaped and are fitted with the threaded column 20 between the nut 22 and the hexagonal column 21. A number of air nozzles 17 are equidistantly arranged on the connecting frame 18. A first through hole 23 is provided on the connecting frame 18 between two adjacent air nozzles 17. The first through hole 23 is located outside the pipe openings of the heat circulation channel 15 and the waste heat recovery pipe 16. The air nozzle 17 is fitted in the fitting groove 8 and extends into the air supply channel 10.

[0031] The cross-section of a part of the air supply channel 10 extending into the transmission channel 3 is n-shaped. The cross-section shape of the air nozzle 17 is the same as the cross-section shape of the fitting groove 8. The cross-section of the air outlet end of the air nozzle 17 is trapezoidal. A first air inlet 24 is provided at the air inlet end of the air nozzle 17 extending into the air supply channel 10. The first air inlet 24 is connected to the air supply channel 10.

[0032] The pipe opening of the air supply channel 10 extending into the air supply chamber 11 is the second air inlet 25. The height of the second air inlet 25 is at the same height position as the height of the air outlet of the fan 12. Guide wind plates 26 are provided on the outer walls of the upper air inlet chamber 1 and the lower air inlet chamber 2 located in the air supply chamber 11. The guide wind plates 26 are located between two adjacent second air inlets 25. The part of the guide wind plate 26 close to the fan 12 is the guide wind angle 31. The angle of the guide wind angle 31 is less than 180°.

[0033] The heat circulation channel 15 is divided into a vertical section 27 and a horizontal section 28. The vertical section 27 is provided on both the second ventilation plate 5 and the fourth ventilation plate 7. The horizontal section 28 is provided on both the first ventilation plate 4 and the third ventilation plate 6. The cross-section shape of the vertical section 27 is the same as the cross-section shape of the fitting groove 8. A second through hole 29 is provided on the wall surface of the air supply channel 10 outside the horizontal section 28. The air supply channel 10 is connected to the horizontal section 28 through the second through hole 29.

[0034] The cross-section of the waste heat recovery pipe 16 is in a shape of a rectangle with a hole in the middle. The two ends of the waste heat recovery pipe 16 are respectively connected to the transmission channel 3 and the air supply chamber 11. The waste heat recovery pipe 16 at the air supply chamber 11 is located outside the groove 13.

[0035] At least two electric heating tubes 14 are provided in the groove 13. Power supply sockets 30 are provided on both sides of the air supply chamber 11. The power supply ends of the electric heating tubes 14 are inserted into the power supply sockets 30.

[0036] Both the lower air inlet chamber 2 and the upper air inlet chamber 1 are composed of two plates, which facilitates the processing of ventilation ducts inside the lower air inlet chamber 2 and the upper air inlet chamber 1. Moreover, the lower air inlet chamber 2 and the upper air inlet chamber 1 are connected by a movable connection, which can be disassembled when it is necessary to inspect the ventilation ducts inside the lower air inlet chamber 2 and the upper air inlet chamber 1, so as to facilitate the inspection work.

[0037] The release paper is transferred to the transfer channel 3. The blower 12 blows out air and the heating tube 14 generates hot air. The hot air is blown into the air supply channel 10 and then blown onto the release paper through the nozzle assembly 9 to dry the silicone oil on the surface of the release paper.

[0038] By twisting the hexagonal post 21 with a tool, the threaded post 20 can be moved up and down, thereby adjusting the distance between the connecting frame 18 and the release paper, and further adjusting the distance between the nozzle 17 and the release paper. By adjusting the distance between the nozzle 17 and the release paper, the drying time of the silicone oil on the release paper can be shortened. The shape of the mating groove 8 and the shape of the air supply channel 10 make it convenient to move the nozzle 17 in the mating groove 8 and move the nozzle 17 up and down in the air supply channel 10.

[0039] The air outlet of the fan 12 is at the same height as the second air inlet 25. At the same time, the air blown to the air guide plate 26 can be dispersed to both sides and enter the second air inlet 25 by the air guide angle 31 on the air guide plate 26, so that the air blown by the fan 12 can be blown into the second air inlet 25 as much as possible.

[0040] After the air blown out of the nozzle 17 reaches the surface of the release paper, the air on the surface of the release paper will collide and move upward because the cross-sectional shape of the nozzle 17 is trapezoidal. Moreover, when there is airflow in the air supply channel, the pressure in the air supply channel 10 is relatively small, while the pressure in the heat circulation channel 15 is large. The hot air in the heat circulation channel 15 is carried into the air supply channel. After the hot air in the heat circulation channel 15 is carried into the air supply channel, the heat circulation channel 15 will attract the hot air on the surface of the release paper into the heat circulation channel 15, thereby forming a hot air circulation pipe structure inside the box.

[0041] The power socket 30 is connected to an external power source to control the heat generated by the heating element 14. The heating element 14 is located after the air outlet of the fan 12, which is more conducive to maintaining the temperature of the hot air.

[0042] One end of the waste heat recovery pipe 16 is connected to the air supply chamber 11. When the fan 12 blows out air, the gas flow speed in the air supply chamber 11 near the pipe opening of the waste heat recovery pipe 16 is faster and the pressure is lower. The hot air in the waste heat recovery pipe 16 will be carried out of the waste heat recovery pipe 16. However, the pressure in the waste heat recovery pipe 16 at both ends of the transmission channel 3 is lower. The hot air at both ends of the transmission channel 3 will be carried into the waste heat recovery pipe 16 and then into the air supply chamber 11.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A suspended drying oven capable of achieving efficient drying, the suspended drying oven comprising an upper air inlet chamber and a lower air inlet chamber, the upper air inlet chamber being fixedly connected above the lower air inlet chamber, the junction of the upper and lower air inlet chambers forming a conveying channel for material transfer, the upper air inlet chamber being composed of a first ventilation plate and a second ventilation plate, the lower air inlet chamber being composed of a third ventilation plate and a fourth ventilation plate, the second ventilation plate being fixedly connected to the bottom end of the first ventilation plate, and the fourth ventilation plate being fixedly connected to the upper end of the third ventilation plate, characterized in that: A number of mating grooves are provided in both the second ventilation plate and the fourth ventilation plate. The mating grooves are engaged with air nozzle assemblies. The mating grooves in the second ventilation plate and the mating grooves in the fourth ventilation plate are arranged in an alternating pattern in the length direction of the transmission channel. The air inlet end of the mating groove is connected to a air supply channel. Air supply cavities are provided on the outer sides of both the upper air inlet chamber and the lower air inlet chamber. The air inlet end of the air supply channel is connected to the air supply cavity. At least two fans are provided on one side of the air supply cavity. A groove is provided at the bottom end of the air supply cavity. An electric heating tube is provided in the groove. Heat circulation channels are provided in both the upper air inlet chamber and the lower air inlet chamber. Waste heat recovery pipes are provided in the upper air inlet chamber and the lower air inlet chamber at both ends of the transmission channel; The air supply channel pipe mouth extending into the air supply cavity is the second air inlet. The height of the second air inlet is at the same height as the air outlet height of the fan. Air guide plates are provided on the outer walls of both the upper air inlet chamber and the lower air inlet chamber located in the air supply cavity. The air guide plates are located between two adjacent second air inlets. The part of the air guide plate close to the fan side is the air guide angle. The angle of the air guide angle is less than 180°.

2. The suspended drying oven according to claim 1, characterized in that, The air nozzle assembly includes an air nozzle and a connecting frame. Positioning plates are provided on the outer wall surfaces at both ends of the upper air inlet chamber and the lower air inlet chamber. Threaded columns are provided on both sides of the positioning plate. Hexagonal columns are provided at both ends of the threaded column. Nuts are engaged with the threaded columns outside the hexagonal columns. The two ends of the connecting frame are L-shaped and are engaged with the threaded columns between the nuts and the hexagonal columns. A number of air nozzles are equidistantly arranged on the connecting frame. A first through hole is provided in the connecting frame between two adjacent air nozzles. The first through hole is located outside the pipe mouths of the heat circulation channel and the waste heat recovery pipe. The air nozzle is engaged in the mating groove and extends into the air supply channel.

3. A suspended drying oven capable of achieving efficient drying according to claim 2, characterized in that, The cross-section of the part of the air supply channel extending into the transmission channel is n-shaped in the longitudinal direction. The cross-sectional shape of the air nozzle is the same as the cross-sectional shape of the mating groove. The cross-section of the air outlet end of the air nozzle is trapezoidal. A first air inlet is provided at the air inlet end of the air nozzle extending into the air supply channel. The first air inlet is connected to the air supply channel.

4. A suspended drying oven capable of achieving efficient drying according to claim 1, characterized in that, The heat circulation channel is divided into a vertical section and a horizontal section. The second ventilation plate and the fourth ventilation plate are both provided with vertical sections. The first ventilation plate and the third ventilation plate are both provided with horizontal sections. The cross-sectional shape of the vertical section is the same as the cross-sectional shape of the mating groove. A second through hole is provided on the wall surface of the air supply channel outside the horizontal section. The air supply channel is connected to the horizontal section through the second through hole.

5. A suspension drying oven capable of achieving efficient drying according to claim 1, characterized in that, The cross-section of the waste heat recovery pipe is in a shape of a rectangle with a hole in the middle. The two ends of the waste heat recovery pipe are respectively connected to the transmission channel and the air supply cavity. The waste heat recovery pipe at the air supply cavity is located outside the groove.

6. A suspended drying oven capable of achieving efficient drying according to claim 1, characterized in that, At least two electric heating tubes are provided in the groove. Power sockets are provided on both sides of the air supply cavity. The power connection ends of the electric heating tubes are inserted into the power sockets.

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