Folding fin type heating roller

Abstract

The utility model discloses a folding fin type heating roller which comprises a roller body and a roller shaft connected to the roller body, the roller body comprises an inner roller, an outer roller and a folding fin roller, the folding fin roller is connected between the inner roller and the outer roller, the folding fin roller is provided with a plurality of inflow channels and backflow channels, and the inflow channels are communicated with the backflow channels. The roller shaft comprises a first roller shaft body, the first roller shaft body comprises a water inlet pipe and a water outlet pipe, the water inlet pipe is sleeved with the water outlet pipe, a gap exists between the water inlet pipe and the water outlet pipe, the water inlet pipe is communicated with the inflow channel, and the water outlet pipe is communicated with the backflow channel. And the inflow channel at one end, far away from the first roll shaft, of the fin folding cylinder is communicated with the backflow channel. According to the heating roller, the folded fins are arranged in the roller body to form the two flow channels, heat exchange of fluid in the roller can be accelerated, full utilization of heat fluid energy in the roller is promoted, and the temperature distribution uniformity of the surface of the roller is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of heating roller devices, specifically to a folded fin type heating roller. Background Technology

[0002] In the wet process for producing lithium-ion battery separators, after the extraction stage, there are drying stages to remove residual extractants and heat setting stages to alter the crystal structure and eliminate film stress. Both stages are significantly affected by temperature control. Therefore, the heat exchange structure inside the roller is particularly important. However, in existing heated roller structures, the high-temperature fluid flows directly into the inner cavity channel located at the roller's axis after entering from the inlet. This high-temperature fluid is transported from the operating side of the roller to the driving side, and then enters the spiral channel on the roller surface through the end holes. After flowing back to the starting end, the fluid enters the return channel and exits the roller. During this heat exchange process, there is a large air gap between the inner cavity channel and the spiral channel, which is not conducive to heat exchange between the two. As a result, the temperature on the driving side of the existing roller is almost the same as the temperature at the high-temperature fluid inlet, but much higher than the temperature on the operating side. This leads to a large temperature difference on the roller surface, which affects battery production.

[0003] Therefore, there is a need to provide a folded fin type heating roller to solve the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a folded fin type heating roller. By setting folded fins in the cylinder to form two flow channels, it can accelerate the heat exchange of the fluid in the roller, promote the full utilization of the heat fluid energy in the roller, and improve the uniformity of temperature distribution on the roller surface.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A folded fin type heating roller includes a cylinder body and a roller shaft connected to the cylinder body. The cylinder body comprises an inner cylinder, an outer cylinder, and a folded fin cylinder. The folded fin cylinder is connected between the inner cylinder and the outer cylinder. The folded fin cylinder is provided with a plurality of inflow channels and return channels, which are alternately arranged. The roller shaft includes a first roller shaft, which includes an inlet pipe and an outlet pipe. The outlet pipe is sleeved on the inlet pipe, and there is a gap between the inlet pipe and the outlet pipe. The inlet pipe communicates with the inflow channels, and the outlet pipe communicates with the return channels. The inflow channel and return channel at the end of the folded fin cylinder away from the first roller shaft are interconnected.

[0007] As a further improvement to the above technical solution, the roller shaft also includes a second roller shaft and an inner roller shaft. The inner roller shaft passes through the central axis of the inner cylinder, and the first roller shaft and the second roller shaft are respectively disposed at both ends of the inner roller shaft.

[0008] As a further improvement to the above technical solution, the inner cylinder is provided with a first inner end cover and a second inner end cover at both ends, the inner roller shaft is connected to the first inner end cover and the second inner end cover at both ends, the inner end of the water inlet pipe is fixedly connected to the first inner end cover, and the inner end of the second roller shaft is fixedly connected to the second inner end cover.

[0009] As a further improvement to the above technical solution, the outer cylinder is provided with a first outer end cover and a second outer end cover at its two ends, the first outer end cover being sleeved on the water outlet pipe and the second outer end cover being sleeved on the second roller shaft.

[0010] As a further improvement to the above technical solution, the folding fin tube includes an annular folding fin and a fixed support ring. An inflow channel is formed between the annular folding fin and the inner cylinder, and a return channel is formed between the annular folding fin and the outer cylinder. The fixed support ring is coaxially disposed at both ends of the annular folding fin.

[0011] As a further improvement to the above technical solution, the annular folding fin is provided with multiple V-shaped openings, and the fixed support ring divides the V-shaped openings into water inlets and sealing openings. The water inlets located inside the fixed support ring are connected to the inflow channel, and the water inlets located outside the fixed support ring are connected to the return channel. A sealing plate is provided at the sealing opening.

[0012] As a further improvement to the above technical solution, a sealing baffle is provided at the end of the fixed support ring away from the annular folding fin, which is sleeved on the water inlet pipe, and a water inlet channel is formed between the sealing baffle and the first inner end cover, and a water outlet channel is formed between the sealing baffle and the first outer end cover.

[0013] As a further improvement to the above technical solution, the water inlet pipe is provided with a plurality of water inlet holes at one end near the first inner end cover. The water inlet holes are located between the first inner end cover and the sealing baffle, and the water inlet holes are connected to the inflow channel through the water inlet channel.

[0014] As a further improvement to the above technical solution, the end of the water outlet pipe near the first outer end cover is provided with a plurality of water outlet holes, the water outlet holes are located between the first outer end cover and the sealing baffle, and the water outlet holes are connected to the return channel through the water outlet channel.

[0015] As a further improvement to the above technical solution, the second inner end cover is provided with a plurality of water return holes, and a water return space is formed between the second inner end cover, the second outer end cover and the outer cylinder. The inflow channel is connected to the water return space through the water return holes, and the water return space is connected to the return channel.

[0016] The beneficial effects of this utility model are as follows: By setting a folded fin tube between the inner and outer cylinders of the cylinder, the folded fins form two flow channels, one for inflow and one for return, with the inner and outer cylinders respectively. At the same time, two fixed support rings and sealing plates are used to separate the two flow channels and ensure that they do not mix. This allows the hot and cold fluids inside the cylinder to flow separately on both sides of the same metal layer, thereby making the heat exchange of the fluid inside the cylinder more intense and promoting the full utilization of the hot fluid energy, thus ensuring the uniformity of the temperature distribution on the roller surface. Meanwhile, the roller shaft at one end is set as a water inlet pipe and a water outlet pipe connected by a sleeve. By setting a sealing baffle and a cylinder cover plate, a water inlet channel and a water outlet channel are formed, so that the water inlet pipe is connected to the inflow channel and the water outlet pipe is connected to the return channel. This ensures that the flow inside the cylinder can flow in real time, which is more conducive to heat exchange inside the cylinder and improves the uniformity of the temperature on the cylinder surface. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of the heating roller of this utility model;

[0019] Figure 2 This is a first-view cross-sectional structural diagram of the heating roller of this utility model;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the heating roller structure from a second perspective.

[0022] Figure 5 This is a schematic diagram of the heating roller structure from a third-angle perspective.

[0023] Figure 6 This is a schematic diagram of the fourth-angle cross-sectional structure of the heating roller of this utility model.

[0024] Reference numerals: 1. Cylinder body; 11. Inner cylinder; 12. Outer cylinder; 13. Folded fin cylinder; 131. Annular folded fin; 132. Fixed support ring; 133. Water inlet; 134. Sealing port; 135. Sealing plate; 14. Inner end cover; 141. First inner end cover; 142. Second inner end cover; 15. Outer end cover; 151. First outer end cover; 152. Second outer end cover; 16. Sealing baffle; 2. Roller shaft; 21. First roller shaft; 22. Second roller shaft; 23. Inner roller shaft; 3. Inlet channel; 4. Return channel; 5. Water inlet pipe; 51. Water inlet through hole; 6. Water outlet pipe; 61. Water outlet through hole; 7. Water inlet channel; 8. Water outlet channel; 9. Return water hole; 10. Return water space. Detailed Implementation

[0025] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / connections involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / fixed installations can use screw connections, bolt connections, pin connections, key connections, adhesive connections, mortise and tenon connections, welding, riveting, etc., as needed. For detachable connections, screw connections, bolt connections, threaded connections, snap-fit ​​connections, mortise and tenon connections, Velcro connections, etc., can be used as needed. The various technical features in this utility model can be combined interactively without contradicting each other.

[0026] Reference Figure 1 , Figure 2 A folded fin type heating roller includes a cylinder body 1 and a roller shaft 2. The cylinder body 1 includes an inner cylinder 11, an outer cylinder 12, and a folded fin cylinder 13. The inner side of the folded fin cylinder 13 is connected to the inner cylinder 11 to form a plurality of inflow channels 3. The outer side of the folded fin cylinder 13 is connected to the outer cylinder 12 to form a plurality of return channels 4. The inflow channels 3 and return channels 4 are alternately arranged with one inflow and one outflow to ensure the uniformity of heat flow in the cylinder body 1 and improve the uniformity of heating of the base film. In use, the outer cylinder 12 is in contact with the diaphragm, and the heat on it heats the diaphragm through heat conduction. The inner cylinder 11 mainly serves to support the folded fin cylinder 13 to prevent it from deforming.

[0027] The roller shaft 2 is connected to the cylinder 1, and the roller shaft 2 includes a first roller shaft 21 connected to one end of the cylinder 1. The first roller shaft 21 includes an inlet pipe 5 and an outlet pipe 6. The outlet pipe 6 is sleeved on the inlet pipe 5. The two are coaxially arranged, so that there is a gap between the inlet pipe 5 and the outlet pipe 6, thereby ensuring that water enters through the inlet pipe 5 and water exits through the outlet pipe 6. The inlet pipe 5 is then connected to the inflow channel 3, and the outlet pipe 6 is connected to the return channel 4. At the same time, the inflow channel 3 and the return channel 4 at the other end of the folding cylinder 13 are connected to each other, thereby making the heating roller form a flow channel structure that can return heat exchange, so that the internal heat exchange is more intense, the energy utilization of the hot fluid is more complete, and thus ensuring the uniformity of temperature distribution on the roller surface.

[0028] Reference Figure 2 In an embodiment of this utility model, the roller shaft 2 further includes a second roller shaft 22 and an inner roller shaft 23. The inner roller shaft 23 can be configured as a hollow shaft and is inserted through the central axis of the inner cylinder 11. This can reduce the vertical deformation of the roller surface caused by the long length of the entire heating roller and improve the rigidity of the roller. The first roller shaft 21 and the second roller shaft 22 are respectively disposed at both ends of the inner roller shaft 23, and the three are coaxially disposed, which makes the roller operate stably.

[0029] Reference Figure 3 , Figure 4 In this embodiment of the present invention, both ends of the inner cylinder 11 are provided with inner end caps 14, so that an air layer is formed on the inner side of the inner cylinder 11, which can slow down the heat loss from this side and promote the heat to still be transferred radially to the fins and fluid, thereby increasing the full utilization of the energy of the hot fluid; the inner end cap 14 includes a first inner end cap 141 and a second inner end cap 142, the two ends of the inner roller shaft 23 are respectively connected to the first inner end cap 141 and the second inner end cap 142, the inner end of the water inlet pipe 5 is fixedly connected to the first inner end cap 141, and the inner end of the second roller shaft 22 is... The side end is fixedly connected to the second inner end cap 142, so that the roller shaft 2 is connected to the inner cylinder 11; at the same time, both ends of the outer cylinder 12 are provided with outer end caps 15 to seal the cylinder 1, so that a fluid channel is formed between the inner cylinder 11 and the outer cylinder 12, and to ensure that no liquid leakage occurs when the heat flows in the cylinder 1; the outer end cap 15 includes a first outer end cap 151 and a second outer end cap 152. The first outer end cap 151 is sleeved on the water outlet pipe 6, and the second outer end cap 152 is sleeved on the second roller shaft 22, so that the roller shaft 2 is connected to the outer cylinder 12.

[0030] Reference Figure 3 , Figure 5In an embodiment of this utility model, the folding fin tube 13 includes annular folding fins 131 and a fixed support ring 132. The annular folding fins 131 are formed by bending a steel plate. An inflow channel 3 is formed between the annular folding fins 131 and the inner cylinder 11, and a return channel 4 is formed between the annular folding fins 131 and the outer cylinder 12, allowing the hot fluid to flow inside the tube 1. The annular folding fins 131 function as a heat exchanger to achieve uniform fluid temperature. The fixed support ring 132 is connected to both ends of the annular folding fins 131 and is coaxially arranged with the annular folding fins 131. The annular folding fins 131 are provided with multiple V-shaped openings. The inlet and outlet are spaced apart, one opening inward and one opening outward. The inward-opening V-shaped inlet is connected to the inlet channel 3, and the outward-opening V-shaped inlet is connected to the return channel 4. At the same time, the fixed support ring 132 divides the V-shaped inlet into a water inlet 133 and a sealing port 134. The water inlet 133 located inside the fixed support ring 132 is connected to the inlet channel 3, and the water inlet 133 located outside the fixed support ring 132 is connected to the return channel 4. A sealing plate 135 is provided at the sealing port 134 to form a seal, so that the annular folded fin 131 is divided into upper and lower channels, and effectively prevents the internal fluid from interfering with each other due to the mixing of fluids on both sides of the annular folded fin 131.

[0031] Reference Figures 3 to 6 In an embodiment of this utility model, a sealing baffle 16 is provided at the end of the fixed support ring 132 away from the annular folding fin 131. The sealing baffle 16 is sleeved on the water inlet pipe 5, and a water inlet channel 7 is formed between the sealing baffle 16 and the first inner end cap 141. A plurality of water inlet holes 51 are provided at the end of the water inlet pipe 5 near the first inner end cap 141. The water inlet holes 51 are located between the first inner end cap 141 and the sealing baffle 16, and the water inlet holes 51 are connected to the inlet channel 3 through the water inlet channel 7. After the high-temperature fluid enters from the water inlet pipe 5, it will flow through the inlet channel 3. The fluid is distributed and its flow direction is changed through the inlet hole 51, so that the high-temperature fluid flows from the inlet channel 7 into the flow channel 3; at the same time, the sealing baffle 16 and the first outer end cover 151 form an outlet channel 8. The outlet pipe 6 is provided with a plurality of outlet holes 61 at one end near the first outer end cover 151. The outlet holes 61 are located between the first outer end cover 151 and the sealing baffle 16, and the outlet holes 61 are connected to the return channel 4 through the outlet channel 8, so that the fluid in the cylinder 1 flows back into the outlet channel 8, and then converges into the outlet pipe 6 through the outlet holes 61 and flows out.

[0032] Reference Figure 4 , Figure 6In this embodiment of the present invention, the end of the fixed support ring 132 away from the annular folding fin 131 is connected to the outer edge of the second inner end cover 142, and the second inner end cover 142 is provided with a plurality of water return holes 9. A water return space 10 is formed between the second inner end cover 142, the second outer end cover 152 and the outer cylinder 12. The inlet channel 3 is connected to the water return space 10 through the water return holes 9, and the water return space 10 is connected to the return channel 4. This allows the fluid from the inlet channel 3 of the folding fin cylinder 13 to flow out from the water return holes 9 into the water return space 10, and then back from the water return space 10 into the return channel 4 of the folding fin cylinder 13, and then out through the water outlet channel 8 and the water outlet pipe 6, thus completing the heating process of the entire heating roller.

[0033] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A folded fin type heating roller, comprising a cylinder body and a roller shaft connected to the cylinder body, characterized in that: The cylinder body includes an inner cylinder, an outer cylinder, and a folding fin cylinder. The folding fin cylinder is connected between the inner cylinder and the outer cylinder. The folding fin cylinder is provided with a plurality of inflow channels and return channels, and the inflow channels and return channels are arranged alternately. The roller shaft includes a first roller shaft, which includes an inlet pipe and an outlet pipe. The outlet pipe is sleeved on the inlet pipe, and there is a gap between the inlet pipe and the outlet pipe. The inlet pipe is connected to the inflow channel, and the outlet pipe is connected to the return channel. The inflow channel and the return channel at the end of the folding fin cylinder away from the first roller shaft are interconnected.

2. The folded fin type heating roller according to claim 1, characterized in that: The roller shaft also includes a second roller shaft and an inner roller shaft. The inner roller shaft passes through the central axis of the inner cylinder, and the first roller shaft and the second roller shaft are respectively located at both ends of the inner roller shaft.

3. A folded fin type heating roller according to claim 2, characterized in that: The inner cylinder is provided with a first inner end cover and a second inner end cover at both ends. The two ends of the inner roller shaft are connected to the first inner end cover and the second inner end cover respectively. The inner end of the water inlet pipe is fixedly connected to the first inner end cover, and the inner end of the second roller shaft is fixedly connected to the second inner end cover.

4. A folded fin type heating roller according to claim 3, characterized in that: The outer cylinder is provided with a first outer end cap and a second outer end cap at its two ends respectively. The first outer end cap is sleeved on the water outlet pipe, and the second outer end cap is sleeved on the second roller shaft.

5. A folded fin type heating roller according to claim 4, characterized in that: The folding fin tube includes an annular folding fin and a fixed support ring. An inflow channel is formed between the annular folding fin and the inner cylinder, and a return channel is formed between the annular folding fin and the outer cylinder. The fixed support ring is coaxially disposed at both ends of the annular folding fin.

6. A folded fin type heating roller according to claim 5, characterized in that: The annular folding fin is provided with multiple V-shaped openings. The fixed support ring divides the V-shaped openings into water inlets and sealing openings. The water inlets located inside the fixed support ring are connected to the inflow channel, and the water inlets located outside the fixed support ring are connected to the return channel. A sealing plate is provided at the sealing opening.

7. A folded fin type heating roller according to claim 5, characterized in that: A sealing baffle is provided at the end of the fixed support ring away from the annular folding fin. The sealing baffle is sleeved on the water inlet pipe, and a water inlet channel is formed between the sealing baffle and the first inner end cover, and a water outlet channel is formed between the sealing baffle and the first outer end cover.

8. A folded fin type heating roller according to claim 7, characterized in that: The water inlet pipe has multiple water inlet holes at one end near the first inner end cap. The water inlet holes are located between the first inner end cap and the sealing baffle, and the water inlet holes are connected to the inflow channel through the water inlet channel.

9. A folded fin type heating roller according to claim 7, characterized in that: The water outlet pipe has multiple water outlet holes at one end near the first outer end cover. The water outlet holes are located between the first outer end cover and the sealing baffle, and the water outlet holes are connected to the return channel through the water outlet channel.

10. A folded fin type heating roller according to claim 4, characterized in that: The second inner end cap is provided with multiple water return holes, and a water return space is formed between the second inner end cap, the second outer end cap and the outer cylinder. The inflow channel is connected to the water return space through the water return holes, and the water return space is connected to the return channel.

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